2f0ca4dbf0
for x in docs/examples/* ; do
if grep -q '// Disabled' $x; then
continue
fi
HASH=$(sed -n 's#^// HASH=\(.*\)$#\1#p' $x)
NAME=$(sed -n 's#^REG_FIDDLE(\([^,]*\),.*$#\1#p' $x)
FILES="$(grep -l $HASH site/user/api/*.md)"
if [ "$FILES" ] ; then
echo $HASH $NAME $FILES;
sed -i "s/$HASH/@$NAME/g" $FILES
fi
done
https://skia.org/user/api/SkAutoCanvasRestore_Reference?cl=248158
https://skia.org/user/api/SkBitmap_Reference?cl=248158
https://skia.org/user/api/SkBlendMode_Reference?cl=248158
https://skia.org/user/api/SkCanvas_Reference?cl=248158
https://skia.org/user/api/SkColor4f_Reference?cl=248158
https://skia.org/user/api/SkColor_Reference?cl=248158
https://skia.org/user/api/SkFont_Reference?cl=248158
https://skia.org/user/api/SkIPoint_Reference?cl=248158
https://skia.org/user/api/SkIRect_Reference?cl=248158
https://skia.org/user/api/SkImageInfo_Reference?cl=248158
https://skia.org/user/api/SkImage_Reference?cl=248158
https://skia.org/user/api/SkMatrix_Reference?cl=248158
https://skia.org/user/api/SkPaint_Reference?cl=248158
https://skia.org/user/api/SkPath_Reference?cl=248158
https://skia.org/user/api/SkPicture_Reference?cl=248158
https://skia.org/user/api/SkPixmap_Reference?cl=248158
https://skia.org/user/api/SkPoint_Reference?cl=248158
https://skia.org/user/api/SkRRect_Reference?cl=248158
https://skia.org/user/api/SkRect_Reference?cl=248158
https://skia.org/user/api/SkRegion_Reference?cl=248158
https://skia.org/user/api/SkSurface_Reference?cl=248158
https://skia.org/user/api/SkTextBlobBuilder_Reference?cl=248158
https://skia.org/user/api/SkTextBlob_Reference?cl=248158
No-Try: true
Change-Id: I29ff57f3c1dd9f27f67be5511c942e7108908642
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/248158
Auto-Submit: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner aka dogben <benjaminwagner@google.com>
Reviewed-by: Ben Wagner aka dogben <benjaminwagner@google.com>
6121 lines
401 KiB
Markdown
6121 lines
401 KiB
Markdown
SkCanvas Reference
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===
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<a name='SkCanvas'></a>
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---
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<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
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class <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> {
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static std::unique_ptr<<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>> <a href='#SkCanvas_MakeRasterDirect'>MakeRasterDirect</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, void* pixels,
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size_t rowBytes,
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const <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>* props = nullptr);
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static std::unique_ptr<<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>> <a href='#SkCanvas_MakeRasterDirectN32'>MakeRasterDirectN32</a>(int width, int height, <a href='SkColor_Reference#SkPMColor'>SkPMColor</a>* pixels,
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size_t rowBytes);
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<a href='#SkCanvas_empty_constructor'>SkCanvas()</a>;
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<a href='#SkCanvas_int_int_const_SkSurfaceProps_star'>SkCanvas</a>(int width, int height, const <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>* props = nullptr);
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explicit <a href='#SkCanvas_copy_const_SkBitmap'>SkCanvas</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>);
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<a href='#SkCanvas_const_SkBitmap_const_SkSurfaceProps'>SkCanvas</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>& props);
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virtual <a href='#SkCanvas_destructor'>~SkCanvas()</a>;
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<a href='undocumented#SkMetaData'>SkMetaData</a>& <a href='#SkCanvas_getMetaData'>getMetaData</a>();
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<a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> <a href='#SkCanvas_imageInfo'>imageInfo</a>() const;
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bool <a href='#SkCanvas_getProps'>getProps</a>(<a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>* props) const;
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void <a href='#SkCanvas_flush'>flush()</a>;
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virtual <a href='undocumented#SkISize'>SkISize</a> <a href='#SkCanvas_getBaseLayerSize'>getBaseLayerSize</a>() const;
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<a href='undocumented#sk_sp'>sk_sp</a><<a href='SkSurface_Reference#SkSurface'>SkSurface</a>> <a href='#SkCanvas_makeSurface'>makeSurface</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, const <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>* props = nullptr);
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virtual <a href='undocumented#GrContext'>GrContext</a>* <a href='#SkCanvas_getGrContext'>getGrContext</a>();
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void* <a href='#SkCanvas_accessTopLayerPixels'>accessTopLayerPixels</a>(<a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>* info, size_t* rowBytes, <a href='SkIPoint_Reference#SkIPoint'>SkIPoint</a>* origin = nullptr);
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<a href='undocumented#SkRasterHandleAllocator'>SkRasterHandleAllocator</a>::<a href='#SkRasterHandleAllocator_Handle'>Handle</a> <a href='#SkCanvas_accessTopRasterHandle'>accessTopRasterHandle</a>() const;
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bool <a href='#SkCanvas_peekPixels'>peekPixels</a>(<a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>* <a href='SkPixmap_Reference#Pixmap'>pixmap</a>);
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bool <a href='#SkCanvas_readPixels'>readPixels</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& dstInfo, void* dstPixels, size_t dstRowBytes,
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int srcX, int srcY);
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bool <a href='#SkCanvas_readPixels'>readPixels</a>(const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& <a href='SkPixmap_Reference#Pixmap'>pixmap</a>, int srcX, int srcY);
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bool <a href='#SkCanvas_readPixels'>readPixels</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, int srcX, int srcY);
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bool <a href='#SkCanvas_writePixels'>writePixels</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, const void* pixels, size_t rowBytes, int x, int y);
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bool <a href='#SkCanvas_writePixels'>writePixels</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, int x, int y);
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int <a href='#SkCanvas_save'>save()</a>;
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int <a href='#SkCanvas_saveLayer'>saveLayer</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
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int <a href='#SkCanvas_saveLayer'>saveLayer</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
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int <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
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int <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, <a href='undocumented#U8CPU'>U8CPU</a> <a href='SkColor_Reference#Alpha'>alpha</a>);
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enum <a href='#SkCanvas_SaveLayerFlagsSet'>SaveLayerFlagsSet</a> {
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<a href='#SkCanvas_kPreserveLCDText_SaveLayerFlag'>kPreserveLCDText_SaveLayerFlag</a> = 1 << 1,
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<a href='#SkCanvas_kInitWithPrevious_SaveLayerFlag'>kInitWithPrevious_SaveLayerFlag</a> = 1 << 2,
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};
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typedef uint32_t <a href='#SkCanvas_SaveLayerFlags'>SaveLayerFlags</a>;
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int <a href='#SkCanvas_saveLayer'>saveLayer</a>(const <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>& layerRec);
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void <a href='#SkCanvas_restore'>restore()</a>;
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int <a href='#SkCanvas_getSaveCount'>getSaveCount</a>() const;
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void <a href='#SkCanvas_restoreToCount'>restoreToCount</a>(int saveCount);
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void <a href='#SkCanvas_translate'>translate</a>(<a href='undocumented#SkScalar'>SkScalar</a> dx, <a href='undocumented#SkScalar'>SkScalar</a> dy);
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void <a href='#SkCanvas_scale'>scale</a>(<a href='undocumented#SkScalar'>SkScalar</a> sx, <a href='undocumented#SkScalar'>SkScalar</a> sy);
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void <a href='#SkCanvas_rotate'>rotate</a>(<a href='undocumented#SkScalar'>SkScalar</a> degrees);
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void <a href='#SkCanvas_rotate'>rotate</a>(<a href='undocumented#SkScalar'>SkScalar</a> degrees, <a href='undocumented#SkScalar'>SkScalar</a> px, <a href='undocumented#SkScalar'>SkScalar</a> py);
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void <a href='#SkCanvas_skew'>skew</a>(<a href='undocumented#SkScalar'>SkScalar</a> sx, <a href='undocumented#SkScalar'>SkScalar</a> sy);
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void <a href='#SkCanvas_concat'>concat</a>(const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& <a href='SkMatrix_Reference#Matrix'>matrix</a>);
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void <a href='#SkCanvas_setMatrix'>setMatrix</a>(const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& <a href='SkMatrix_Reference#Matrix'>matrix</a>);
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void <a href='#SkCanvas_resetMatrix'>resetMatrix</a>();
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void <a href='#SkCanvas_clipRect'>clipRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, <a href='undocumented#SkClipOp'>SkClipOp</a> op, bool doAntiAlias);
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void <a href='#SkCanvas_clipRect'>clipRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, <a href='undocumented#SkClipOp'>SkClipOp</a> op);
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void <a href='#SkCanvas_clipRect'>clipRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, bool doAntiAlias = false);
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void <a href='#SkCanvas_clipRRect'>clipRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, <a href='undocumented#SkClipOp'>SkClipOp</a> op, bool doAntiAlias);
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void <a href='#SkCanvas_clipRRect'>clipRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, <a href='undocumented#SkClipOp'>SkClipOp</a> op);
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void <a href='#SkCanvas_clipRRect'>clipRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, bool doAntiAlias = false);
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void <a href='#SkCanvas_clipPath'>clipPath</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>, <a href='undocumented#SkClipOp'>SkClipOp</a> op, bool doAntiAlias);
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void <a href='#SkCanvas_clipPath'>clipPath</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>, <a href='undocumented#SkClipOp'>SkClipOp</a> op);
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void <a href='#SkCanvas_clipPath'>clipPath</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>, bool doAntiAlias = false);
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void <a href='#SkCanvas_clipRegion'>clipRegion</a>(const <a href='SkRegion_Reference#SkRegion'>SkRegion</a>& deviceRgn, <a href='undocumented#SkClipOp'>SkClipOp</a> op = <a href='undocumented#SkClipOp'>SkClipOp</a>::<a href='#SkClipOp_kIntersect'>kIntersect</a>);
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bool <a href='#SkCanvas_quickReject'>quickReject</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>) const;
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bool <a href='#SkCanvas_quickReject'>quickReject</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>) const;
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<a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a>() const;
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bool <a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a>(<a href='SkRect_Reference#SkRect'>SkRect</a>* bounds) const;
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<a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a>() const;
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bool <a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a>(<a href='SkIRect_Reference#SkIRect'>SkIRect</a>* bounds) const;
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void <a href='#SkCanvas_drawColor'>drawColor</a>(<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='SkColor_Reference#Color'>color</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode = <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>::<a href='#SkBlendMode_kSrcOver'>kSrcOver</a>);
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void <a href='#SkCanvas_clear'>clear</a>(<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='SkColor_Reference#Color'>color</a>);
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void <a href='#SkCanvas_discard'>discard()</a>;
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void <a href='#SkCanvas_drawPaint'>drawPaint</a>(const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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enum <a href='#SkCanvas_PointMode'>PointMode</a> {
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<a href='#SkCanvas_kPoints_PointMode'>kPoints_PointMode</a>,
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<a href='#SkCanvas_kLines_PointMode'>kLines_PointMode</a>,
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<a href='#SkCanvas_kPolygon_PointMode'>kPolygon_PointMode</a>,
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};
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void <a href='#SkCanvas_drawPoints'>drawPoints</a>(<a href='#SkCanvas_PointMode'>PointMode</a> mode, size_t count, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> pts[], const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawPoint'>drawPoint</a>(<a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawPoint'>drawPoint</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> p, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawLine'>drawLine</a>(<a href='undocumented#SkScalar'>SkScalar</a> x0, <a href='undocumented#SkScalar'>SkScalar</a> y0, <a href='undocumented#SkScalar'>SkScalar</a> x1, <a href='undocumented#SkScalar'>SkScalar</a> y1, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawLine'>drawLine</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> p0, <a href='SkPoint_Reference#SkPoint'>SkPoint</a> p1, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawRect'>drawRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawIRect'>drawIRect</a>(const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawRegion'>drawRegion</a>(const <a href='SkRegion_Reference#SkRegion'>SkRegion</a>& <a href='SkRegion_Reference#Region'>region</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawOval'>drawOval</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='undocumented#Oval'>oval</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawRRect'>drawRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawDRRect'>drawDRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& outer, const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& inner, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawCircle'>drawCircle</a>(<a href='undocumented#SkScalar'>SkScalar</a> cx, <a href='undocumented#SkScalar'>SkScalar</a> cy, <a href='undocumented#SkScalar'>SkScalar</a> radius, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawCircle'>drawCircle</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> center, <a href='undocumented#SkScalar'>SkScalar</a> radius, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawArc'>drawArc</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='undocumented#Oval'>oval</a>, <a href='undocumented#SkScalar'>SkScalar</a> startAngle, <a href='undocumented#SkScalar'>SkScalar</a> sweepAngle,
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bool useCenter, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, <a href='undocumented#SkScalar'>SkScalar</a> rx, <a href='undocumented#SkScalar'>SkScalar</a> ry, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawPath'>drawPath</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawImage'>drawImage</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, <a href='undocumented#SkScalar'>SkScalar</a> left, <a href='undocumented#SkScalar'>SkScalar</a> top,
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const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr);
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void <a href='#SkCanvas_drawImage'>drawImage</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, <a href='undocumented#SkScalar'>SkScalar</a> left, <a href='undocumented#SkScalar'>SkScalar</a> top,
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const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr);
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enum <a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> {
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<a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>,
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<a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a>,
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};
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void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& src, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
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const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
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<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>);
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void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& isrc, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
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const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
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<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>);
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void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
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void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& src, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
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const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
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<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>);
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void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& isrc, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
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const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
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<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>);
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void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawImageNine'>drawImageNine</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& center, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr);
|
|
void <a href='#SkCanvas_drawImageNine'>drawImageNine</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& center, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr);
|
|
void <a href='#SkCanvas_drawBitmap'>drawBitmap</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, <a href='undocumented#SkScalar'>SkScalar</a> left, <a href='undocumented#SkScalar'>SkScalar</a> top,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr);
|
|
void <a href='#SkCanvas_drawBitmapRect'>drawBitmapRect</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& src, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>);
|
|
void <a href='#SkCanvas_drawBitmapRect'>drawBitmapRect</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& isrc, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>);
|
|
void <a href='#SkCanvas_drawBitmapRect'>drawBitmapRect</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>);
|
|
void <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& center, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr);
|
|
void <a href='#SkCanvas_drawBitmapLattice'>drawBitmapLattice</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='#SkCanvas_Lattice'>Lattice</a>& lattice, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr);
|
|
void <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='#SkCanvas_Lattice'>Lattice</a>& lattice, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr);
|
|
void <a href='#SkCanvas_drawText'>drawText</a>(const void* <a href='undocumented#Text'>text</a>, size_t byteLength, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawString'>drawString</a>(const char* <a href='undocumented#String'>string</a>, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawString'>drawString</a>(const <a href='undocumented#SkString'>SkString</a>& <a href='undocumented#String'>string</a>, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawPosText'>drawPosText</a>(const void* <a href='undocumented#Text'>text</a>, size_t byteLength, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> pos[],
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawPosTextH'>drawPosTextH</a>(const void* <a href='undocumented#Text'>text</a>, size_t byteLength, const <a href='undocumented#SkScalar'>SkScalar</a> xpos[], <a href='undocumented#SkScalar'>SkScalar</a> constY,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawTextRSXform'>drawTextRSXform</a>(const void* <a href='undocumented#Text'>text</a>, size_t byteLength, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[],
|
|
const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a>(const <a href='SkTextBlob_Reference#SkTextBlob'>SkTextBlob</a>* blob, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkTextBlob_Reference#SkTextBlob'>SkTextBlob</a>>& blob, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawPicture'>drawPicture</a>(const <a href='SkPicture_Reference#SkPicture'>SkPicture</a>* <a href='SkPicture_Reference#Picture'>picture</a>);
|
|
void <a href='#SkCanvas_drawPicture'>drawPicture</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkPicture_Reference#SkPicture'>SkPicture</a>>& <a href='SkPicture_Reference#Picture'>picture</a>);
|
|
void <a href='#SkCanvas_drawPicture'>drawPicture</a>(const <a href='SkPicture_Reference#SkPicture'>SkPicture</a>* <a href='SkPicture_Reference#Picture'>picture</a>, const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>* <a href='SkMatrix_Reference#Matrix'>matrix</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawPicture'>drawPicture</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkPicture_Reference#SkPicture'>SkPicture</a>>& <a href='SkPicture_Reference#Picture'>picture</a>, const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>* <a href='SkMatrix_Reference#Matrix'>matrix</a>,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawVertices'>drawVertices</a>(const <a href='undocumented#SkVertices'>SkVertices</a>* <a href='undocumented#Vertices'>vertices</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawVertices'>drawVertices</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='undocumented#SkVertices'>SkVertices</a>>& <a href='undocumented#Vertices'>vertices</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawVertices'>drawVertices</a>(const <a href='undocumented#SkVertices'>SkVertices</a>* <a href='undocumented#Vertices'>vertices</a>, const <a href='undocumented#SkVertices'>SkVertices</a>::<a href='#SkVertices_Bone'>Bone</a> bones[], int boneCount,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawVertices'>drawVertices</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='undocumented#SkVertices'>SkVertices</a>>& <a href='undocumented#Vertices'>vertices</a>, const <a href='undocumented#SkVertices'>SkVertices</a>::<a href='#SkVertices_Bone'>Bone</a> bones[],
|
|
int boneCount, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawPatch'>drawPatch</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> <a href='SkPath_Reference#Cubic'>cubics</a>[12], const <a href='SkColor_Reference#SkColor'>SkColor</a> colors[4],
|
|
const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> texCoords[4], <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawPatch'>drawPatch</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> <a href='SkPath_Reference#Cubic'>cubics</a>[12], const <a href='SkColor_Reference#SkColor'>SkColor</a> colors[4],
|
|
const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> texCoords[4], const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawAtlas'>drawAtlas</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* atlas, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[], const <a href='SkRect_Reference#SkRect'>SkRect</a> tex[],
|
|
const <a href='SkColor_Reference#SkColor'>SkColor</a> colors[], int count, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawAtlas'>drawAtlas</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& atlas, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[], const <a href='SkRect_Reference#SkRect'>SkRect</a> tex[],
|
|
const <a href='SkColor_Reference#SkColor'>SkColor</a> colors[], int count, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawAtlas'>drawAtlas</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* atlas, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[], const <a href='SkRect_Reference#SkRect'>SkRect</a> tex[], int count,
|
|
const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawAtlas'>drawAtlas</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& atlas, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[], const <a href='SkRect_Reference#SkRect'>SkRect</a> tex[],
|
|
int count, const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>);
|
|
void <a href='#SkCanvas_drawDrawable'>drawDrawable</a>(<a href='undocumented#SkDrawable'>SkDrawable</a>* <a href='undocumented#Drawable'>drawable</a>, const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>* <a href='SkMatrix_Reference#Matrix'>matrix</a> = nullptr);
|
|
void <a href='#SkCanvas_drawDrawable'>drawDrawable</a>(<a href='undocumented#SkDrawable'>SkDrawable</a>* <a href='undocumented#Drawable'>drawable</a>, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y);
|
|
void <a href='#SkCanvas_drawAnnotation'>drawAnnotation</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, const char key[], <a href='undocumented#SkData'>SkData</a>* value);
|
|
void <a href='#SkCanvas_drawAnnotation'>drawAnnotation</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, const char key[], const <a href='undocumented#sk_sp'>sk_sp</a><<a href='undocumented#SkData'>SkData</a>>& value);
|
|
virtual bool <a href='#SkCanvas_isClipEmpty'>isClipEmpty</a>() const;
|
|
virtual bool <a href='#SkCanvas_isClipRect'>isClipRect</a>() const;
|
|
const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& <a href='#SkCanvas_getTotalMatrix'>getTotalMatrix</a>() const;
|
|
};
|
|
|
|
</pre>
|
|
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> provides an interface for drawing, and how the drawing is clipped and transformed.
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> contains a stack of <a href='SkMatrix_Reference#Matrix'>Matrix</a> and Clip values.
|
|
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> and <a href='SkPaint_Reference#Paint'>Paint</a> together provide the state to draw into <a href='SkSurface_Reference#Surface'>Surface</a> or <a href='undocumented#Device'>Device</a>.
|
|
Each <a href='SkCanvas_Reference#Canvas'>Canvas</a> draw call transforms the geometry of the object by the concatenation of all
|
|
<a href='SkMatrix_Reference#Matrix'>Matrix</a> values in the stack. The transformed geometry is clipped by the intersection
|
|
of all of Clip values in the stack. The <a href='SkCanvas_Reference#Canvas'>Canvas</a> draw calls use <a href='SkPaint_Reference#Paint'>Paint</a> to supply drawing
|
|
state such as <a href='SkColor_Reference#Color'>Color</a>, <a href='undocumented#Typeface'>Typeface</a>, <a href='undocumented#Text'>text</a> <a href='undocumented#Size'>size</a>, stroke width, <a href='undocumented#Shader'>Shader</a> and so on.
|
|
|
|
To draw to a pixel-based destination, create <a href='#Raster_Surface'>Raster_Surface</a> or <a href='#GPU_Surface'>GPU_Surface</a>.
|
|
Request <a href='SkCanvas_Reference#Canvas'>Canvas</a> from <a href='SkSurface_Reference#Surface'>Surface</a> to obtain the interface to draw.
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> generated by <a href='#Raster_Surface'>Raster_Surface</a> draws to memory visible to the CPU.
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> generated by <a href='#GPU_Surface'>GPU_Surface</a> uses Vulkan or OpenGL to draw to the GPU.
|
|
|
|
To draw to a <a href='undocumented#Document'>document</a>, obtain <a href='SkCanvas_Reference#Canvas'>Canvas</a> from <a href='#SVG_Canvas'>SVG_Canvas</a>, <a href='#Document_PDF'>Document_PDF</a>, or <a href='#Picture_Recorder'>Picture_Recorder</a>.
|
|
<a href='undocumented#Document'>Document</a> based <a href='SkCanvas_Reference#Canvas'>Canvas</a> and other <a href='SkCanvas_Reference#Canvas'>Canvas</a> subclasses reference <a href='undocumented#Device'>Device</a> describing the
|
|
destination.
|
|
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> can be constructed to draw to <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> without first creating <a href='#Raster_Surface'>Raster_Surface</a>.
|
|
This approach may be deprecated in the future.
|
|
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> may be created directly when no <a href='SkSurface_Reference#Surface'>Surface</a> is required; some <a href='SkCanvas_Reference#Canvas'>Canvas</a> methods
|
|
implicitly create <a href='#Raster_Surface'>Raster_Surface</a>.
|
|
|
|
<a name='SkCanvas_MakeRasterDirect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
static std::unique_ptr<<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>> <a href='#SkCanvas_MakeRasterDirect'>MakeRasterDirect</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, void* pixels,
|
|
size_t rowBytes,
|
|
const <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>* props = nullptr)
|
|
</pre>
|
|
|
|
Allocates raster <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> that will draw directly into <a href='#SkCanvas_MakeRasterDirect_pixels'>pixels</a>.
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is returned if all parameters are valid.
|
|
Valid parameters include:
|
|
<a href='#SkCanvas_MakeRasterDirect_info'>info</a> dimensions are zero or positive;
|
|
<a href='#SkCanvas_MakeRasterDirect_info'>info</a> contains <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> and <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> supported by <a href='undocumented#Raster_Surface'>raster surface</a>;
|
|
<a href='#SkCanvas_MakeRasterDirect_pixels'>pixels</a> is not nullptr;
|
|
<a href='#SkCanvas_MakeRasterDirect_rowBytes'>rowBytes</a> is zero or large enough to contain <a href='#SkCanvas_MakeRasterDirect_info'>info</a> width <a href='#SkCanvas_MakeRasterDirect_pixels'>pixels</a> of <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>.
|
|
|
|
Pass zero for <a href='#SkCanvas_MakeRasterDirect_rowBytes'>rowBytes</a> to compute <a href='#SkCanvas_MakeRasterDirect_rowBytes'>rowBytes</a> from <a href='#SkCanvas_MakeRasterDirect_info'>info</a> width and <a href='undocumented#Size'>size</a> of <a href='undocumented#Pixel'>pixel</a>.
|
|
If <a href='#SkCanvas_MakeRasterDirect_rowBytes'>rowBytes</a> is greater than zero, it must be equal to or greater than
|
|
<a href='#SkCanvas_MakeRasterDirect_info'>info</a> width times bytes required for <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>.
|
|
|
|
<a href='undocumented#Pixel'>Pixel</a> buffer <a href='undocumented#Size'>size</a> should be <a href='#SkCanvas_MakeRasterDirect_info'>info</a> height times computed <a href='#SkCanvas_MakeRasterDirect_rowBytes'>rowBytes</a>.
|
|
Pixels are not initialized.
|
|
To access <a href='#SkCanvas_MakeRasterDirect_pixels'>pixels</a> after drawing, call <a href='#SkCanvas_flush'>flush()</a> or <a href='#SkCanvas_peekPixels'>peekPixels</a>().
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_MakeRasterDirect_info'><code><strong>info</strong></code></a></td>
|
|
<td>width, height, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, <a href='undocumented#SkColorSpace'>SkColorSpace</a>, of <a href='undocumented#Raster_Surface'>raster surface</a>;</td>
|
|
</tr>
|
|
</table>
|
|
|
|
width, or height, or both, may be zero
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_MakeRasterDirect_pixels'><code><strong>pixels</strong></code></a></td>
|
|
<td>pointer to destination <a href='#SkCanvas_MakeRasterDirect_pixels'>pixels</a> buffer</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_MakeRasterDirect_rowBytes'><code><strong>rowBytes</strong></code></a></td>
|
|
<td>interval from one <a href='SkSurface_Reference#SkSurface'>SkSurface</a> row to the next, or zero</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_MakeRasterDirect_props'><code><strong>props</strong></code></a></td>
|
|
<td>LCD striping orientation and setting for <a href='undocumented#Device'>device</a> independent fonts;</td>
|
|
</tr>
|
|
</table>
|
|
|
|
may be nullptr
|
|
|
|
### Return Value
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> if all parameters are valid; otherwise, nullptr
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_MakeRasterDirect"><div>Allocates a three by three <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, clears it to white, and draws a black <a href='undocumented#Pixel'>pixel</a>
|
|
in the center.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
---
|
|
-x-
|
|
---
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_MakeRasterDirectN32'>MakeRasterDirectN32</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_MakeRasterDirect'>MakeRasterDirect</a>
|
|
|
|
<a name='SkCanvas_MakeRasterDirectN32'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
static std::unique_ptr<<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>> <a href='#SkCanvas_MakeRasterDirectN32'>MakeRasterDirectN32</a>(int width, int height, <a href='SkColor_Reference#SkPMColor'>SkPMColor</a>* pixels,
|
|
size_t rowBytes)
|
|
</pre>
|
|
|
|
Allocates raster <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> specified by inline <a href='SkImage_Reference#Image'>image</a> specification. Subsequent <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>
|
|
calls draw into <a href='#SkCanvas_MakeRasterDirectN32_pixels'>pixels</a>.
|
|
<a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is set to <a href='SkImageInfo_Reference#kN32_SkColorType'>kN32_SkColorType</a>.
|
|
<a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a> is set to <a href='SkImageInfo_Reference#kPremul_SkAlphaType'>kPremul_SkAlphaType</a>.
|
|
To access <a href='#SkCanvas_MakeRasterDirectN32_pixels'>pixels</a> after drawing, call <a href='#SkCanvas_flush'>flush()</a> or <a href='#SkCanvas_peekPixels'>peekPixels</a>().
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is returned if all parameters are valid.
|
|
Valid parameters include:
|
|
<a href='#SkCanvas_MakeRasterDirectN32_width'>width</a> and <a href='#SkCanvas_MakeRasterDirectN32_height'>height</a> are zero or positive;
|
|
<a href='#SkCanvas_MakeRasterDirectN32_pixels'>pixels</a> is not nullptr;
|
|
<a href='#SkCanvas_MakeRasterDirectN32_rowBytes'>rowBytes</a> is zero or large enough to contain <a href='#SkCanvas_MakeRasterDirectN32_width'>width</a> <a href='#SkCanvas_MakeRasterDirectN32_pixels'>pixels</a> of <a href='SkImageInfo_Reference#kN32_SkColorType'>kN32_SkColorType</a>.
|
|
|
|
Pass zero for <a href='#SkCanvas_MakeRasterDirectN32_rowBytes'>rowBytes</a> to compute <a href='#SkCanvas_MakeRasterDirectN32_rowBytes'>rowBytes</a> from <a href='#SkCanvas_MakeRasterDirectN32_width'>width</a> and <a href='undocumented#Size'>size</a> of <a href='undocumented#Pixel'>pixel</a>.
|
|
If <a href='#SkCanvas_MakeRasterDirectN32_rowBytes'>rowBytes</a> is greater than zero, it must be equal to or greater than
|
|
<a href='#SkCanvas_MakeRasterDirectN32_width'>width</a> times bytes required for <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>.
|
|
|
|
<a href='undocumented#Pixel'>Pixel</a> buffer <a href='undocumented#Size'>size</a> should be <a href='#SkCanvas_MakeRasterDirectN32_height'>height</a> times <a href='#SkCanvas_MakeRasterDirectN32_rowBytes'>rowBytes</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_MakeRasterDirectN32_width'><code><strong>width</strong></code></a></td>
|
|
<td><a href='undocumented#Pixel'>pixel</a> column count on <a href='undocumented#Raster_Surface'>raster surface</a> created; must be zero or greater</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_MakeRasterDirectN32_height'><code><strong>height</strong></code></a></td>
|
|
<td><a href='undocumented#Pixel'>pixel</a> row count on <a href='undocumented#Raster_Surface'>raster surface</a> created; must be zero or greater</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_MakeRasterDirectN32_pixels'><code><strong>pixels</strong></code></a></td>
|
|
<td>pointer to destination <a href='#SkCanvas_MakeRasterDirectN32_pixels'>pixels</a> buffer; buffer <a href='undocumented#Size'>size</a> should be <a href='#SkCanvas_MakeRasterDirectN32_height'>height</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
times <a href='#SkCanvas_MakeRasterDirectN32_rowBytes'>rowBytes</a>
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_MakeRasterDirectN32_rowBytes'><code><strong>rowBytes</strong></code></a></td>
|
|
<td>interval from one <a href='SkSurface_Reference#SkSurface'>SkSurface</a> row to the next, or zero</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> if all parameters are valid; otherwise, nullptr
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_MakeRasterDirectN32"><div>Allocates a three by three <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, clears it to white, and draws a black <a href='undocumented#Pixel'>pixel</a>
|
|
in the center.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
---
|
|
-x-
|
|
---
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_MakeRasterDirect'>MakeRasterDirect</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_MakeRasterDirect'>MakeRasterDirect</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>::<a href='#SkImageInfo_MakeN32Premul'>MakeN32Premul</a>
|
|
|
|
<a name='SkCanvas_empty_constructor'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkCanvas_empty_constructor'>SkCanvas()</a>
|
|
</pre>
|
|
|
|
Creates an empty <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> with no backing <a href='undocumented#Device'>device</a> or pixels, with
|
|
a width and height of zero.
|
|
|
|
### Return Value
|
|
|
|
empty <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_empty_constructor"><div>Passes a placeholder to a function that requires one.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
rect stays rect is true
|
|
rect stays rect is false
|
|
rect stays rect is true
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_MakeRasterDirect'>MakeRasterDirect</a> <a href='undocumented#SkRasterHandleAllocator'>SkRasterHandleAllocator</a>::<a href='#SkRasterHandleAllocator_MakeCanvas'>MakeCanvas</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_getCanvas'>getCanvas</a> <a href='undocumented#SkCreateColorSpaceXformCanvas'>SkCreateColorSpaceXformCanvas</a>
|
|
|
|
<a name='SkCanvas_int_int_const_SkSurfaceProps_star'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkCanvas_int_int_const_SkSurfaceProps_star'>SkCanvas</a>(int width, int height, const <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>* props = nullptr)
|
|
</pre>
|
|
|
|
Creates <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> of the specified dimensions without a <a href='SkSurface_Reference#SkSurface'>SkSurface</a>.
|
|
Used by subclasses with custom implementations for draw member functions.
|
|
|
|
If <a href='#SkCanvas_int_int_const_SkSurfaceProps_star_props'>props</a> equals nullptr, <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a> are created with
|
|
<a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>::<a href='#SkSurfaceProps_InitType'>InitType</a> settings, which choose the <a href='undocumented#Pixel'>pixel</a> striping
|
|
direction and order. Since a platform may dynamically change its direction when
|
|
the <a href='undocumented#Device'>device</a> is rotated, and since a platform may have multiple monitors with
|
|
different characteristics, it is best not to rely on this legacy behavior.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_int_int_const_SkSurfaceProps_star_width'><code><strong>width</strong></code></a></td>
|
|
<td>zero or greater</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_int_int_const_SkSurfaceProps_star_height'><code><strong>height</strong></code></a></td>
|
|
<td>zero or greater</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_int_int_const_SkSurfaceProps_star_props'><code><strong>props</strong></code></a></td>
|
|
<td>LCD striping orientation and setting for <a href='undocumented#Device'>device</a> independent fonts;</td>
|
|
</tr>
|
|
</table>
|
|
|
|
may be nullptr
|
|
|
|
### Return Value
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> placeholder with dimensions
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_int_int_const_SkSurfaceProps_star">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
canvas is empty
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_MakeRasterDirect'>MakeRasterDirect</a> <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a> <a href='undocumented#SkPixelGeometry'>SkPixelGeometry</a> <a href='undocumented#SkCreateColorSpaceXformCanvas'>SkCreateColorSpaceXformCanvas</a>
|
|
|
|
<a name='SkCanvas_copy_const_SkBitmap'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
explicit <a href='#SkCanvas_copy_const_SkBitmap'>SkCanvas</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>)
|
|
</pre>
|
|
|
|
Constructs a <a href='SkCanvas_Reference#Canvas'>canvas</a> that draws into <a href='#SkCanvas_copy_const_SkBitmap_bitmap'>bitmap</a>.
|
|
Sets <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>::<a href='#SkSurfaceProps_kLegacyFontHost_InitType'>kLegacyFontHost_InitType</a> in constructed <a href='SkSurface_Reference#SkSurface'>SkSurface</a>.
|
|
|
|
<a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> is copied so that subsequently editing <a href='#SkCanvas_copy_const_SkBitmap_bitmap'>bitmap</a> will not affect
|
|
constructed <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>.
|
|
|
|
May be deprecated in the future.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_copy_const_SkBitmap_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td>width, height, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, and <a href='undocumented#Pixel'>pixel</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
storage of <a href='undocumented#Raster_Surface'>raster surface</a>
|
|
|
|
### Return Value
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> that can be used to draw into <a href='#SkCanvas_copy_const_SkBitmap_bitmap'>bitmap</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_copy_const_SkBitmap"><div>The actual output depends on the installed fonts.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
-----
|
|
---x-
|
|
---x-
|
|
---x-
|
|
---x-
|
|
---x-
|
|
---x-
|
|
-----
|
|
---x-
|
|
---x-
|
|
-----
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_MakeRasterDirect'>MakeRasterDirect</a> <a href='undocumented#SkRasterHandleAllocator'>SkRasterHandleAllocator</a>::<a href='#SkRasterHandleAllocator_MakeCanvas'>MakeCanvas</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_getCanvas'>getCanvas</a> <a href='undocumented#SkCreateColorSpaceXformCanvas'>SkCreateColorSpaceXformCanvas</a>
|
|
|
|
<a name='SkCanvas_const_SkBitmap_const_SkSurfaceProps'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkCanvas_const_SkBitmap_const_SkSurfaceProps'>SkCanvas</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>& props)
|
|
</pre>
|
|
|
|
Constructs a <a href='SkCanvas_Reference#Canvas'>canvas</a> that draws into <a href='#SkCanvas_const_SkBitmap_const_SkSurfaceProps_bitmap'>bitmap</a>.
|
|
Use <a href='#SkCanvas_const_SkBitmap_const_SkSurfaceProps_props'>props</a> to match the <a href='undocumented#Device'>device</a> characteristics, like LCD striping.
|
|
|
|
<a href='#SkCanvas_const_SkBitmap_const_SkSurfaceProps_bitmap'>bitmap</a> is copied so that subsequently editing <a href='#SkCanvas_const_SkBitmap_const_SkSurfaceProps_bitmap'>bitmap</a> will not affect
|
|
constructed <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_const_SkBitmap_const_SkSurfaceProps_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td>width, height, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and <a href='undocumented#Pixel_Storage'>pixel storage</a> of <a href='undocumented#Raster_Surface'>raster surface</a>
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_const_SkBitmap_const_SkSurfaceProps_props'><code><strong>props</strong></code></a></td>
|
|
<td>order and orientation of RGB striping; and whether to use</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a href='undocumented#Device'>device</a> independent fonts
|
|
|
|
### Return Value
|
|
|
|
<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> that can be used to draw into <a href='#SkCanvas_const_SkBitmap_const_SkSurfaceProps_bitmap'>bitmap</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_const_SkBitmap_const_SkSurfaceProps"><div>The actual output depends on the installed fonts.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
-----
|
|
---x-
|
|
---x-
|
|
---x-
|
|
---x-
|
|
---x-
|
|
---x-
|
|
-----
|
|
---x-
|
|
---x-
|
|
-----
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_MakeRasterDirect'>MakeRasterDirect</a> <a href='undocumented#SkRasterHandleAllocator'>SkRasterHandleAllocator</a>::<a href='#SkRasterHandleAllocator_MakeCanvas'>MakeCanvas</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_getCanvas'>getCanvas</a> <a href='undocumented#SkCreateColorSpaceXformCanvas'>SkCreateColorSpaceXformCanvas</a>
|
|
|
|
<a name='SkCanvas_destructor'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
virtual <a href='#SkCanvas_destructor'>~SkCanvas()</a>
|
|
</pre>
|
|
|
|
Draws saved <a href='SkCanvas_Reference#Layer'>layers</a>, if any.
|
|
Frees up resources used by <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_destructor"><div><a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='SkCanvas_Reference#Layer'>Layer</a> draws into <a href='SkBitmap_Reference#Bitmap'>bitmap</a>. <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a> sets up an additional
|
|
drawing <a href='SkSurface_Reference#Surface'>surface</a> that blends with the <a href='SkBitmap_Reference#Bitmap'>bitmap</a>. When <a href='SkCanvas_Reference#Layer'>Layer</a> goes out of
|
|
scope, <a href='SkCanvas_Reference#Layer'>Layer</a> destructor is called. The saved <a href='SkCanvas_Reference#Layer'>Layer</a> is restored, drawing
|
|
transparent letters.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#Canvas_State_Stack'>State_Stack</a>
|
|
|
|
<a name='Property'></a>
|
|
|
|
<a name='SkCanvas_getMetaData'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='undocumented#SkMetaData'>SkMetaData</a>& <a href='#SkCanvas_getMetaData'>getMetaData</a>()
|
|
</pre>
|
|
|
|
Returns storage to associate additional <a href='undocumented#Data'>data</a> with the <a href='SkCanvas_Reference#Canvas'>canvas</a>.
|
|
The storage is freed when <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is deleted.
|
|
|
|
### Return Value
|
|
|
|
storage that can be read from and written to
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="1598396056045e8d0c583b748293d652">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
before: (null)
|
|
during: Hello!
|
|
after: (null)
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='undocumented#SkMetaData'>SkMetaData</a>
|
|
|
|
<a name='SkCanvas_imageInfo'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> <a href='#SkCanvas_imageInfo'>imageInfo</a>()const
|
|
</pre>
|
|
|
|
Returns <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> for <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>. If <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is not associated with raster <a href='SkSurface_Reference#Surface'>surface</a> or
|
|
GPU <a href='SkSurface_Reference#Surface'>surface</a>, returned <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> is set to <a href='SkImageInfo_Reference#kUnknown_SkColorType'>kUnknown_SkColorType</a>.
|
|
|
|
### Return Value
|
|
|
|
dimensions and <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a> of <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_imageInfo">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
emptyInfo == canvasInfo
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> <a href='#SkCanvas_MakeRasterDirect'>MakeRasterDirect</a> <a href='#SkCanvas_makeSurface'>makeSurface</a>
|
|
|
|
<a name='SkCanvas_getProps'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_getProps'>getProps</a>(<a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>* props)const
|
|
</pre>
|
|
|
|
Copies <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>, if <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is associated with <a href='undocumented#Raster_Surface'>raster surface</a> or
|
|
<a href='undocumented#GPU_Surface'>GPU surface</a>, and returns true. Otherwise, returns false and leave <a href='#SkCanvas_getProps_props'>props</a> unchanged.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_getProps_props'><code><strong>props</strong></code></a></td>
|
|
<td>storage for writable <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a> was copied
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getProps">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
isRGB:0
|
|
isRGB:1
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a> <a href='#SkCanvas_makeSurface'>makeSurface</a>
|
|
|
|
<a name='Utility'></a>
|
|
|
|
<a name='SkCanvas_flush'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_flush'>flush()</a>
|
|
</pre>
|
|
|
|
Triggers the immediate execution of all pending draw operations.
|
|
If <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is associated with GPU <a href='SkSurface_Reference#Surface'>surface</a>, resolves all pending GPU operations.
|
|
If <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is associated with raster <a href='SkSurface_Reference#Surface'>surface</a>, has no effect; raster draw
|
|
operations are never deferred.
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_peekPixels'>peekPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_flush'>flush</a> <a href='undocumented#GrContext'>GrContext</a>::<a href='#GrContext_flush'>flush</a> <a href='undocumented#GrContext'>GrContext</a>::<a href='#GrContext_abandonContext'>abandonContext</a>
|
|
|
|
<a name='SkCanvas_getBaseLayerSize'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
virtual <a href='undocumented#SkISize'>SkISize</a> <a href='#SkCanvas_getBaseLayerSize'>getBaseLayerSize</a>()const
|
|
</pre>
|
|
|
|
Gets the <a href='undocumented#Size'>size</a> of the base or root <a href='SkCanvas_Reference#Layer'>layer</a> in global <a href='SkCanvas_Reference#Canvas'>canvas</a> coordinates. The
|
|
origin of the base <a href='SkCanvas_Reference#Layer'>layer</a> is always (0,0). The area available for drawing may be
|
|
smaller (due to clipping or <a href='#SkCanvas_saveLayer'>saveLayer</a>).
|
|
|
|
### Return Value
|
|
|
|
integral width and height of base <a href='SkCanvas_Reference#Layer'>layer</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getBaseLayerSize">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
clip=10,30
|
|
size=20,30
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a>
|
|
|
|
<a name='SkCanvas_makeSurface'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='undocumented#sk_sp'>sk_sp</a><<a href='SkSurface_Reference#SkSurface'>SkSurface</a>> <a href='#SkCanvas_makeSurface'>makeSurface</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, const <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>* props = nullptr)
|
|
</pre>
|
|
|
|
Creates <a href='SkSurface_Reference#SkSurface'>SkSurface</a> matching <a href='#SkCanvas_makeSurface_info'>info</a> and <a href='#SkCanvas_makeSurface_props'>props</a>, and associates it with <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>.
|
|
Returns nullptr if no match found.
|
|
|
|
If <a href='#SkCanvas_makeSurface_props'>props</a> is nullptr, matches <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a> in <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>. If <a href='#SkCanvas_makeSurface_props'>props</a> is nullptr and <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>
|
|
does not have <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>, creates <a href='SkSurface_Reference#SkSurface'>SkSurface</a> with default <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_makeSurface_info'><code><strong>info</strong></code></a></td>
|
|
<td>width, height, <a href='SkImageInfo_Reference#SkColorType'>SkColorType</a>, <a href='SkImageInfo_Reference#SkAlphaType'>SkAlphaType</a>, and <a href='undocumented#SkColorSpace'>SkColorSpace</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_makeSurface_props'><code><strong>props</strong></code></a></td>
|
|
<td><a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a> to match; may be nullptr to match <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='SkSurface_Reference#SkSurface'>SkSurface</a> matching <a href='#SkCanvas_makeSurface_info'>info</a> and <a href='#SkCanvas_makeSurface_props'>props</a>, or nullptr if no match is available
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_makeSurface">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
compatible != nullptr
|
|
size = 3, 4
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkSurface_Reference#SkSurface'>SkSurface</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_makeSurface'>makeSurface</a> <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> <a href='undocumented#SkSurfaceProps'>SkSurfaceProps</a>
|
|
|
|
<a name='SkCanvas_getGrContext'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
virtual <a href='undocumented#GrContext'>GrContext</a>* <a href='#SkCanvas_getGrContext'>getGrContext</a>()
|
|
</pre>
|
|
|
|
Returns GPU context of the GPU <a href='SkSurface_Reference#Surface'>surface</a> associated with <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>.
|
|
|
|
### Return Value
|
|
|
|
GPU context, if available; nullptr otherwise
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getGrContext"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='undocumented#GrContext'>GrContext</a>
|
|
|
|
<a name='SkCanvas_accessTopLayerPixels'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void* <a href='#SkCanvas_accessTopLayerPixels'>accessTopLayerPixels</a>(<a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>* info, size_t* rowBytes, <a href='SkIPoint_Reference#SkIPoint'>SkIPoint</a>* origin = nullptr)
|
|
</pre>
|
|
|
|
Returns the <a href='undocumented#Pixel'>pixel</a> base address, <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>, <a href='#SkCanvas_accessTopLayerPixels_rowBytes'>rowBytes</a>, and <a href='#SkCanvas_accessTopLayerPixels_origin'>origin</a> if the pixels
|
|
can be read directly. The returned address is only valid
|
|
while <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is in scope and unchanged. Any <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> call or <a href='SkSurface_Reference#SkSurface'>SkSurface</a> call
|
|
may invalidate the returned address and other returned values.
|
|
|
|
If pixels are inaccessible, <a href='#SkCanvas_accessTopLayerPixels_info'>info</a>, <a href='#SkCanvas_accessTopLayerPixels_rowBytes'>rowBytes</a>, and <a href='#SkCanvas_accessTopLayerPixels_origin'>origin</a> are unchanged.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_accessTopLayerPixels_info'><code><strong>info</strong></code></a></td>
|
|
<td>storage for writable pixels' <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_accessTopLayerPixels_rowBytes'><code><strong>rowBytes</strong></code></a></td>
|
|
<td>storage for writable pixels' row bytes; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_accessTopLayerPixels_origin'><code><strong>origin</strong></code></a></td>
|
|
<td>storage for <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> top <a href='SkCanvas_Reference#Layer'>layer</a> <a href='#SkCanvas_accessTopLayerPixels_origin'>origin</a>, its top-left corner;</td>
|
|
</tr>
|
|
</table>
|
|
|
|
may be nullptr
|
|
|
|
### Return Value
|
|
|
|
address of pixels, or nullptr if inaccessible
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_accessTopLayerPixels_a"></fiddle-embed></div>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_accessTopLayerPixels_b"><div>Draws "ABC" on the <a href='undocumented#Device'>device</a>. Then draws "DEF" in <a href='SkCanvas_Reference#Layer'>Layer</a>, and reads
|
|
<a href='SkCanvas_Reference#Layer'>Layer</a> to add a large dotted "DEF". Finally blends <a href='SkCanvas_Reference#Layer'>Layer</a> with the
|
|
<a href='undocumented#Device'>device</a>.
|
|
|
|
The <a href='SkCanvas_Reference#Layer'>Layer</a> and blended result appear on the CPU and GPU but the large dotted
|
|
"DEF" appear only on the CPU.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a> <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>
|
|
|
|
<a name='SkCanvas_accessTopRasterHandle'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='undocumented#SkRasterHandleAllocator'>SkRasterHandleAllocator</a>::<a href='#SkRasterHandleAllocator_Handle'>Handle</a> <a href='#SkCanvas_accessTopRasterHandle'>accessTopRasterHandle</a>()const
|
|
</pre>
|
|
|
|
Returns custom context that tracks the <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip.
|
|
|
|
Use <a href='undocumented#SkRasterHandleAllocator'>SkRasterHandleAllocator</a> to blend Skia drawing with custom drawing, typically performed
|
|
by the host platform user interface. The custom context returned is generated by
|
|
<a href='undocumented#SkRasterHandleAllocator'>SkRasterHandleAllocator</a>::<a href='#SkRasterHandleAllocator_MakeCanvas'>MakeCanvas</a>, which creates a custom <a href='SkCanvas_Reference#Canvas'>canvas</a> with raster storage for
|
|
the drawing destination.
|
|
|
|
### Return Value
|
|
|
|
context of custom allocation
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_accessTopRasterHandle"><div></div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
context = skia
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='undocumented#SkRasterHandleAllocator'>SkRasterHandleAllocator</a>
|
|
|
|
<a name='Pixels'></a>
|
|
|
|
<a name='SkCanvas_peekPixels'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_peekPixels'>peekPixels</a>(<a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>* <a href='SkPixmap_Reference#Pixmap'>pixmap</a>)
|
|
</pre>
|
|
|
|
Returns true if <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> has direct access to its pixels.
|
|
|
|
Pixels are readable when <a href='undocumented#SkBaseDevice'>SkBaseDevice</a> is raster. Pixels are not readable when <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>
|
|
is returned from <a href='undocumented#GPU_Surface'>GPU surface</a>, returned by <a href='undocumented#SkDocument'>SkDocument</a>::<a href='#SkDocument_beginPage'>beginPage</a>, returned by
|
|
<a href='undocumented#SkPictureRecorder'>SkPictureRecorder</a>::<a href='#SkPictureRecorder_beginRecording'>beginRecording</a>, or <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is the base of a utility class
|
|
like <a href='undocumented#DebugCanvas'>DebugCanvas</a>.
|
|
|
|
<a href='#SkCanvas_peekPixels_pixmap'>pixmap</a> is valid only while <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is in scope and unchanged. Any
|
|
<a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> or <a href='SkSurface_Reference#SkSurface'>SkSurface</a> call may invalidate the <a href='#SkCanvas_peekPixels_pixmap'>pixmap</a> values.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_peekPixels_pixmap'><code><strong>pixmap</strong></code></a></td>
|
|
<td>storage for <a href='undocumented#Pixel'>pixel</a> state if pixels are readable; otherwise, ignored</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> has direct access to pixels
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_peekPixels">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
width=256 height=256
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_readPixels'>readPixels</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_peekPixels'>peekPixels</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_peekPixels'>peekPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_peekPixels'>peekPixels</a>
|
|
|
|
<a name='SkCanvas_readPixels'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_readPixels'>readPixels</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& dstInfo, void* dstPixels, size_t dstRowBytes, int srcX, int srcY)
|
|
</pre>
|
|
|
|
Copies <a href='SkRect_Reference#Rect'>Rect</a> of pixels from <a href='SkCanvas_Reference#Canvas'>Canvas</a> into <a href='#SkCanvas_readPixels_dstPixels'>dstPixels</a>. <a href='SkMatrix_Reference#Matrix'>Matrix</a> and Clip are
|
|
ignored.
|
|
|
|
Source <a href='SkRect_Reference#Rect'>Rect</a> corners are (<a href='#SkCanvas_readPixels_srcX'>srcX</a>, <a href='#SkCanvas_readPixels_srcY'>srcY</a>) and (<a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_width'>width()</a>, <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_height'>height()</a>).
|
|
Destination <a href='SkRect_Reference#Rect'>Rect</a> corners are (0, 0) and (<a href='#SkCanvas_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_width'>width()</a>, <a href='#SkCanvas_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_height'>height()</a>).
|
|
Copies each readable <a href='undocumented#Pixel'>pixel</a> intersecting both rectangles, without scaling,
|
|
converting to <a href='#SkCanvas_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_colorType'>colorType</a>() and <a href='#SkCanvas_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_alphaType'>alphaType</a>() if required.
|
|
|
|
Pixels are readable when <a href='undocumented#Device'>Device</a> is raster, or backed by a GPU.
|
|
Pixels are not readable when <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is returned by <a href='undocumented#SkDocument'>SkDocument</a>::<a href='#SkDocument_beginPage'>beginPage</a>,
|
|
returned by <a href='undocumented#SkPictureRecorder'>SkPictureRecorder</a>::<a href='#SkPictureRecorder_beginRecording'>beginRecording</a>, or <a href='SkCanvas_Reference#Canvas'>Canvas</a> is the base of a utility
|
|
class like <a href='undocumented#DebugCanvas'>DebugCanvas</a>.
|
|
|
|
The destination <a href='undocumented#Pixel_Storage'>pixel storage</a> must be allocated by the caller.
|
|
|
|
<a href='undocumented#Pixel'>Pixel</a> values are converted only if <a href='#Image_Info_Color_Type'>Color_Type</a> and <a href='#Image_Info_Alpha_Type'>Alpha_Type</a>
|
|
do not match. Only pixels within both source and destination rectangles
|
|
are copied. <a href='#SkCanvas_readPixels_dstPixels'>dstPixels</a> contents outside <a href='SkRect_Reference#Rect'>Rect</a> intersection are unchanged.
|
|
|
|
Pass negative values for <a href='#SkCanvas_readPixels_srcX'>srcX</a> or <a href='#SkCanvas_readPixels_srcY'>srcY</a> to offset pixels across or down destination.
|
|
|
|
Does not copy, and returns false if:
|
|
|
|
<table> <tr>
|
|
<td>Source and destination rectangles do not intersect.</td>
|
|
</tr> <tr>
|
|
<td><a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels could not be converted to <a href='#SkCanvas_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_colorType'>colorType</a>() or <a href='#SkCanvas_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_alphaType'>alphaType</a>().</td>
|
|
</tr> <tr>
|
|
<td><a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels are not readable; for instance, <a href='SkCanvas_Reference#Canvas'>Canvas</a> is document-based.</td>
|
|
</tr> <tr>
|
|
<td><a href='#SkCanvas_readPixels_dstRowBytes'>dstRowBytes</a> is too small to contain one row of pixels.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_readPixels_dstInfo'><code><strong>dstInfo</strong></code></a></td>
|
|
<td>width, height, <a href='#Image_Info_Color_Type'>Color_Type</a>, and <a href='#Image_Info_Alpha_Type'>Alpha_Type</a> of <a href='#SkCanvas_readPixels_dstPixels'>dstPixels</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_readPixels_dstPixels'><code><strong>dstPixels</strong></code></a></td>
|
|
<td>storage for pixels; <a href='#SkCanvas_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_height'>height()</a> times <a href='#SkCanvas_readPixels_dstRowBytes'>dstRowBytes</a>, or larger</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_readPixels_dstRowBytes'><code><strong>dstRowBytes</strong></code></a></td>
|
|
<td><a href='undocumented#Size'>size</a> of one destination row; <a href='#SkCanvas_readPixels_dstInfo'>dstInfo</a>.<a href='#SkImageInfo_width'>width()</a> times <a href='undocumented#Pixel'>pixel</a> <a href='undocumented#Size'>size</a>, or larger</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_readPixels_srcX'><code><strong>srcX</strong></code></a></td>
|
|
<td>offset into readable pixels on x-axis; may be negative</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_readPixels_srcY'><code><strong>srcY</strong></code></a></td>
|
|
<td>offset into readable pixels on y-axis; may be negative</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if pixels were copied
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_readPixels_a"><div>A black <a href='undocumented#Circle'>circle</a> drawn on a blue background provides an <a href='SkImage_Reference#Image'>image</a> to copy.
|
|
<a href='#SkCanvas_readPixels'>readPixels</a> copies one quarter of the <a href='SkCanvas_Reference#Canvas'>canvas</a> into each of the four corners.
|
|
The copied quarter <a href='undocumented#Circle'>circles</a> overdraw the original <a href='undocumented#Circle'>circle</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_readPixels_b"><div><a href='SkCanvas_Reference#Canvas'>Canvas</a> returned by <a href='#Raster_Surface'>Raster_Surface</a> has <a href='undocumented#Premultiply'>Premultiplied</a> <a href='undocumented#Pixel'>pixel</a> values.
|
|
<a href='#SkCanvas_clear'>clear()</a> takes <a href='undocumented#Unpremultiply'>Unpremultiplied</a> input with <a href='#Color_Alpha'>Color_Alpha</a> equal 0x80
|
|
and RGB equal 0x55, 0xAA, 0xFF. RGB is multiplied by <a href='#Color_Alpha'>Color_Alpha</a>
|
|
to generate <a href='undocumented#Premultiply'>Premultiplied</a> value 0x802B5580. <a href='#SkCanvas_readPixels'>readPixels</a> converts <a href='undocumented#Pixel'>pixel</a> back
|
|
to <a href='undocumented#Unpremultiply'>Unpremultiplied</a> value 0x8056A9FF, introducing error.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
pixel = 802b5580
|
|
pixel = 8056a9ff
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_peekPixels'>peekPixels</a> <a href='#SkCanvas_writePixels'>writePixels</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_readPixels'>readPixels</a> <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>::<a href='#SkPixmap_readPixels'>readPixels</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_readPixels'>readPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_readPixels'>readPixels</a>
|
|
|
|
<a name='SkCanvas_readPixels_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_readPixels'>readPixels</a>(const <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>& <a href='SkPixmap_Reference#Pixmap'>pixmap</a>, int srcX, int srcY)
|
|
</pre>
|
|
|
|
Copies <a href='SkRect_Reference#Rect'>Rect</a> of pixels from <a href='SkCanvas_Reference#Canvas'>Canvas</a> into <a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>. <a href='SkMatrix_Reference#Matrix'>Matrix</a> and Clip are
|
|
ignored.
|
|
|
|
Source <a href='SkRect_Reference#Rect'>Rect</a> corners are (<a href='#SkCanvas_readPixels_2_srcX'>srcX</a>, <a href='#SkCanvas_readPixels_2_srcY'>srcY</a>) and (<a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_width'>width()</a>, <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_height'>height()</a>).
|
|
Destination <a href='SkRect_Reference#Rect'>Rect</a> corners are (0, 0) and (<a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>.<a href='#SkPixmap_width'>width()</a>, <a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>.<a href='#SkPixmap_height'>height()</a>).
|
|
Copies each readable <a href='undocumented#Pixel'>pixel</a> intersecting both rectangles, without scaling,
|
|
converting to <a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>.<a href='#SkPixmap_colorType'>colorType</a>() and <a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>.<a href='#SkPixmap_alphaType'>alphaType</a>() if required.
|
|
|
|
Pixels are readable when <a href='undocumented#Device'>Device</a> is raster, or backed by a GPU.
|
|
Pixels are not readable when <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is returned by <a href='undocumented#SkDocument'>SkDocument</a>::<a href='#SkDocument_beginPage'>beginPage</a>,
|
|
returned by <a href='undocumented#SkPictureRecorder'>SkPictureRecorder</a>::<a href='#SkPictureRecorder_beginRecording'>beginRecording</a>, or <a href='SkCanvas_Reference#Canvas'>Canvas</a> is the base of a utility
|
|
class like <a href='undocumented#DebugCanvas'>DebugCanvas</a>.
|
|
|
|
Caller must allocate <a href='undocumented#Pixel_Storage'>pixel storage</a> in <a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a> if needed.
|
|
|
|
<a href='undocumented#Pixel'>Pixel</a> values are converted only if <a href='#Image_Info_Color_Type'>Color_Type</a> and <a href='#Image_Info_Alpha_Type'>Alpha_Type</a>
|
|
do not match. Only pixels within both source and destination <a href='SkRect_Reference#Rect'>Rects</a>
|
|
are copied. <a href='SkPixmap_Reference#Pixmap_Pixels'>pixmap pixels</a> contents outside <a href='SkRect_Reference#Rect'>Rect</a> intersection are unchanged.
|
|
|
|
Pass negative values for <a href='#SkCanvas_readPixels_2_srcX'>srcX</a> or <a href='#SkCanvas_readPixels_2_srcY'>srcY</a> to offset pixels across or down <a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>.
|
|
|
|
Does not copy, and returns false if:
|
|
|
|
<table> <tr>
|
|
<td>Source and destination rectangles do not intersect.</td>
|
|
</tr> <tr>
|
|
<td><a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels could not be converted to <a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>.<a href='#SkPixmap_colorType'>colorType</a>() or <a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>.<a href='#SkPixmap_alphaType'>alphaType</a>().</td>
|
|
</tr> <tr>
|
|
<td><a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels are not readable; for instance, <a href='SkCanvas_Reference#Canvas'>Canvas</a> is document-based.</td>
|
|
</tr> <tr>
|
|
<td><a href='SkPixmap_Reference#Pixmap'>Pixmap</a> pixels could not be allocated.</td>
|
|
</tr> <tr>
|
|
<td><a href='#SkCanvas_readPixels_2_pixmap'>pixmap</a>.<a href='#SkPixmap_rowBytes'>rowBytes</a>() is too small to contain one row of pixels.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_readPixels_2_pixmap'><code><strong>pixmap</strong></code></a></td>
|
|
<td>storage for pixels copied from <a href='SkCanvas_Reference#Canvas'>Canvas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_readPixels_2_srcX'><code><strong>srcX</strong></code></a></td>
|
|
<td>offset into readable pixels on x-axis; may be negative</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_readPixels_2_srcY'><code><strong>srcY</strong></code></a></td>
|
|
<td>offset into readable pixels on y-axis; may be negative</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if pixels were copied
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_readPixels_2"><div><a href='#SkCanvas_clear'>clear()</a> takes <a href='undocumented#Unpremultiply'>Unpremultiplied</a> input with <a href='#Color_Alpha'>Color_Alpha</a> equal 0x80
|
|
and RGB equal 0x55, 0xAA, 0xFF. RGB is multiplied by <a href='#Color_Alpha'>Color_Alpha</a>
|
|
to generate <a href='undocumented#Premultiply'>Premultiplied</a> value 0x802B5580.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
pixel = 802b5580
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_peekPixels'>peekPixels</a> <a href='#SkCanvas_writePixels'>writePixels</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_readPixels'>readPixels</a> <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>::<a href='#SkPixmap_readPixels'>readPixels</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_readPixels'>readPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_readPixels'>readPixels</a>
|
|
|
|
<a name='SkCanvas_readPixels_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_readPixels'>readPixels</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, int srcX, int srcY)
|
|
</pre>
|
|
|
|
Copies <a href='SkRect_Reference#Rect'>Rect</a> of pixels from <a href='SkCanvas_Reference#Canvas'>Canvas</a> into <a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>. <a href='SkMatrix_Reference#Matrix'>Matrix</a> and Clip are
|
|
ignored.
|
|
|
|
Source <a href='SkRect_Reference#Rect'>Rect</a> corners are (<a href='#SkCanvas_readPixels_3_srcX'>srcX</a>, <a href='#SkCanvas_readPixels_3_srcY'>srcY</a>) and (<a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_width'>width()</a>, <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_height'>height()</a>).
|
|
Destination <a href='SkRect_Reference#Rect'>Rect</a> corners are (0, 0) and (<a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>.<a href='#SkBitmap_width'>width()</a>, <a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>.<a href='#SkBitmap_height'>height()</a>).
|
|
Copies each readable <a href='undocumented#Pixel'>pixel</a> intersecting both rectangles, without scaling,
|
|
converting to <a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>.<a href='#SkBitmap_colorType'>colorType</a>() and <a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>.<a href='#SkBitmap_alphaType'>alphaType</a>() if required.
|
|
|
|
Pixels are readable when <a href='undocumented#Device'>Device</a> is raster, or backed by a GPU.
|
|
Pixels are not readable when <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is returned by <a href='undocumented#SkDocument'>SkDocument</a>::<a href='#SkDocument_beginPage'>beginPage</a>,
|
|
returned by <a href='undocumented#SkPictureRecorder'>SkPictureRecorder</a>::<a href='#SkPictureRecorder_beginRecording'>beginRecording</a>, or <a href='SkCanvas_Reference#Canvas'>Canvas</a> is the base of a utility
|
|
class like <a href='undocumented#DebugCanvas'>DebugCanvas</a>.
|
|
|
|
Caller must allocate <a href='undocumented#Pixel_Storage'>pixel storage</a> in <a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a> if needed.
|
|
|
|
<a href='SkBitmap_Reference#Bitmap'>Bitmap</a> values are converted only if <a href='#Image_Info_Color_Type'>Color_Type</a> and <a href='#Image_Info_Alpha_Type'>Alpha_Type</a>
|
|
do not match. Only pixels within both source and destination rectangles
|
|
are copied. <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> pixels outside <a href='SkRect_Reference#Rect'>Rect</a> intersection are unchanged.
|
|
|
|
Pass negative values for <a href='#SkCanvas_readPixels_3_srcX'>srcX</a> or <a href='#SkCanvas_readPixels_3_srcY'>srcY</a> to offset pixels across or down <a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>.
|
|
|
|
Does not copy, and returns false if:
|
|
|
|
<table> <tr>
|
|
<td>Source and destination rectangles do not intersect.</td>
|
|
</tr> <tr>
|
|
<td><a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels could not be converted to <a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>.<a href='#SkBitmap_colorType'>colorType</a>() or <a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>.<a href='#SkBitmap_alphaType'>alphaType</a>().</td>
|
|
</tr> <tr>
|
|
<td><a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels are not readable; for instance, <a href='SkCanvas_Reference#Canvas'>Canvas</a> is document-based.</td>
|
|
</tr> <tr>
|
|
<td><a href='SkBitmap_Reference#Bitmap_Pixels'>bitmap pixels</a> could not be allocated.</td>
|
|
</tr> <tr>
|
|
<td><a href='#SkCanvas_readPixels_3_bitmap'>bitmap</a>.<a href='#SkBitmap_rowBytes'>rowBytes</a>() is too small to contain one row of pixels.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_readPixels_3_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td>storage for pixels copied from <a href='SkCanvas_Reference#Canvas'>Canvas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_readPixels_3_srcX'><code><strong>srcX</strong></code></a></td>
|
|
<td>offset into readable pixels on x-axis; may be negative</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_readPixels_3_srcY'><code><strong>srcY</strong></code></a></td>
|
|
<td>offset into readable pixels on y-axis; may be negative</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if pixels were copied
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_readPixels_3"><div><a href='#SkCanvas_clear'>clear()</a> takes <a href='undocumented#Unpremultiply'>Unpremultiplied</a> input with <a href='#Color_Alpha'>Color_Alpha</a> equal 0x80
|
|
and RGB equal 0x55, 0xAA, 0xFF. RGB is multiplied by <a href='#Color_Alpha'>Color_Alpha</a>
|
|
to generate <a href='undocumented#Premultiply'>Premultiplied</a> value 0x802B5580.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
pixel = 802b5580
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_peekPixels'>peekPixels</a> <a href='#SkCanvas_writePixels'>writePixels</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_readPixels'>readPixels</a> <a href='SkPixmap_Reference#SkPixmap'>SkPixmap</a>::<a href='#SkPixmap_readPixels'>readPixels</a> <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_readPixels'>readPixels</a> <a href='SkSurface_Reference#SkSurface'>SkSurface</a>::<a href='#SkSurface_readPixels'>readPixels</a>
|
|
|
|
<a name='SkCanvas_writePixels'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_writePixels'>writePixels</a>(const <a href='SkImageInfo_Reference#SkImageInfo'>SkImageInfo</a>& info, const void* pixels, size_t rowBytes, int x, int y)
|
|
</pre>
|
|
|
|
Copies <a href='SkRect_Reference#Rect'>Rect</a> from <a href='#SkCanvas_writePixels_pixels'>pixels</a> to <a href='SkCanvas_Reference#Canvas'>Canvas</a>. <a href='SkMatrix_Reference#Matrix'>Matrix</a> and Clip are ignored.
|
|
Source <a href='SkRect_Reference#Rect'>Rect</a> corners are (0, 0) and (<a href='#SkCanvas_writePixels_info'>info</a>.<a href='#SkImageInfo_width'>width()</a>, <a href='#SkCanvas_writePixels_info'>info</a>.<a href='#SkImageInfo_height'>height()</a>).
|
|
Destination <a href='SkRect_Reference#Rect'>Rect</a> corners are (<a href='#SkCanvas_writePixels_x'>x</a>, <a href='#SkCanvas_writePixels_y'>y</a>) and
|
|
(<a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_width'>width()</a>, <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_height'>height()</a>).
|
|
|
|
Copies each readable <a href='undocumented#Pixel'>pixel</a> intersecting both rectangles, without scaling,
|
|
converting to <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_colorType'>colorType</a>() and <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_alphaType'>alphaType</a>() if required.
|
|
|
|
Pixels are writable when <a href='undocumented#Device'>Device</a> is raster, or backed by a GPU.
|
|
Pixels are not writable when <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is returned by <a href='undocumented#SkDocument'>SkDocument</a>::<a href='#SkDocument_beginPage'>beginPage</a>,
|
|
returned by <a href='undocumented#SkPictureRecorder'>SkPictureRecorder</a>::<a href='#SkPictureRecorder_beginRecording'>beginRecording</a>, or <a href='SkCanvas_Reference#Canvas'>Canvas</a> is the base of a utility
|
|
class like <a href='undocumented#DebugCanvas'>DebugCanvas</a>.
|
|
|
|
<a href='undocumented#Pixel'>Pixel</a> values are converted only if <a href='#Image_Info_Color_Type'>Color_Type</a> and <a href='#Image_Info_Alpha_Type'>Alpha_Type</a>
|
|
do not match. Only <a href='#SkCanvas_writePixels_pixels'>pixels</a> within both source and destination rectangles
|
|
are copied. <a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='#SkCanvas_writePixels_pixels'>pixels</a> outside <a href='SkRect_Reference#Rect'>Rect</a> intersection are unchanged.
|
|
|
|
Pass negative values for <a href='#SkCanvas_writePixels_x'>x</a> or <a href='#SkCanvas_writePixels_y'>y</a> to offset <a href='#SkCanvas_writePixels_pixels'>pixels</a> to the left or
|
|
above <a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='#SkCanvas_writePixels_pixels'>pixels</a>.
|
|
|
|
Does not copy, and returns false if:
|
|
|
|
<table> <tr>
|
|
<td>Source and destination rectangles do not intersect.</td>
|
|
</tr> <tr>
|
|
<td><a href='#SkCanvas_writePixels_pixels'>pixels</a> could not be converted to <a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_colorType'>colorType</a>() or
|
|
<a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_alphaType'>alphaType</a>().</td>
|
|
</tr> <tr>
|
|
<td><a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='#SkCanvas_writePixels_pixels'>pixels</a> are not writable; for instance, <a href='SkCanvas_Reference#Canvas'>Canvas</a> is document-based.</td>
|
|
</tr> <tr>
|
|
<td><a href='#SkCanvas_writePixels_rowBytes'>rowBytes</a> is too small to contain one row of <a href='#SkCanvas_writePixels_pixels'>pixels</a>.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_writePixels_info'><code><strong>info</strong></code></a></td>
|
|
<td>width, height, <a href='#Image_Info_Color_Type'>Color_Type</a>, and <a href='#Image_Info_Alpha_Type'>Alpha_Type</a> of <a href='#SkCanvas_writePixels_pixels'>pixels</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_writePixels_pixels'><code><strong>pixels</strong></code></a></td>
|
|
<td><a href='#SkCanvas_writePixels_pixels'>pixels</a> to copy, of <a href='undocumented#Size'>size</a> <a href='#SkCanvas_writePixels_info'>info</a>.<a href='#SkImageInfo_height'>height()</a> times <a href='#SkCanvas_writePixels_rowBytes'>rowBytes</a>, or larger</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_writePixels_rowBytes'><code><strong>rowBytes</strong></code></a></td>
|
|
<td><a href='undocumented#Size'>size</a> of one row of <a href='#SkCanvas_writePixels_pixels'>pixels</a>; <a href='#SkCanvas_writePixels_info'>info</a>.<a href='#SkImageInfo_width'>width()</a> times <a href='undocumented#Pixel'>pixel</a> <a href='undocumented#Size'>size</a>, or larger</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_writePixels_x'><code><strong>x</strong></code></a></td>
|
|
<td>offset into <a href='SkCanvas_Reference#Canvas'>Canvas</a> writable <a href='#SkCanvas_writePixels_pixels'>pixels</a> on x-axis; may be negative</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_writePixels_y'><code><strong>y</strong></code></a></td>
|
|
<td>offset into <a href='SkCanvas_Reference#Canvas'>Canvas</a> writable <a href='#SkCanvas_writePixels_pixels'>pixels</a> on y-axis; may be negative</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#SkCanvas_writePixels_pixels'>pixels</a> were written to <a href='SkCanvas_Reference#Canvas'>Canvas</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_writePixels"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_readPixels'>readPixels</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_writePixels'>writePixels</a>
|
|
|
|
<a name='SkCanvas_writePixels_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_writePixels'>writePixels</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, int x, int y)
|
|
</pre>
|
|
|
|
Copies <a href='SkRect_Reference#Rect'>Rect</a> from pixels to <a href='SkCanvas_Reference#Canvas'>Canvas</a>. <a href='SkMatrix_Reference#Matrix'>Matrix</a> and Clip are ignored.
|
|
Source <a href='SkRect_Reference#Rect'>Rect</a> corners are (0, 0) and (<a href='#SkCanvas_writePixels_2_bitmap'>bitmap</a>.<a href='#SkBitmap_width'>width()</a>, <a href='#SkCanvas_writePixels_2_bitmap'>bitmap</a>.<a href='#SkBitmap_height'>height()</a>).
|
|
|
|
Destination <a href='SkRect_Reference#Rect'>Rect</a> corners are (<a href='#SkCanvas_writePixels_2_x'>x</a>, <a href='#SkCanvas_writePixels_2_y'>y</a>) and
|
|
(<a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_width'>width()</a>, <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_height'>height()</a>).
|
|
|
|
Copies each readable <a href='undocumented#Pixel'>pixel</a> intersecting both rectangles, without scaling,
|
|
converting to <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_colorType'>colorType</a>() and <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_alphaType'>alphaType</a>() if required.
|
|
|
|
Pixels are writable when <a href='undocumented#Device'>Device</a> is raster, or backed by a GPU.
|
|
Pixels are not writable when <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> is returned by <a href='undocumented#SkDocument'>SkDocument</a>::<a href='#SkDocument_beginPage'>beginPage</a>,
|
|
returned by <a href='undocumented#SkPictureRecorder'>SkPictureRecorder</a>::<a href='#SkPictureRecorder_beginRecording'>beginRecording</a>, or <a href='SkCanvas_Reference#Canvas'>Canvas</a> is the base of a utility
|
|
class like <a href='undocumented#DebugCanvas'>DebugCanvas</a>.
|
|
|
|
<a href='undocumented#Pixel'>Pixel</a> values are converted only if <a href='#Image_Info_Color_Type'>Color_Type</a> and <a href='#Image_Info_Alpha_Type'>Alpha_Type</a>
|
|
do not match. Only pixels within both source and destination rectangles
|
|
are copied. <a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels outside <a href='SkRect_Reference#Rect'>Rect</a> intersection are unchanged.
|
|
|
|
Pass negative values for <a href='#SkCanvas_writePixels_2_x'>x</a> or <a href='#SkCanvas_writePixels_2_y'>y</a> to offset pixels to the left or
|
|
above <a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels.
|
|
|
|
Does not copy, and returns false if:
|
|
|
|
<table> <tr>
|
|
<td>Source and destination rectangles do not intersect.</td>
|
|
</tr> <tr>
|
|
<td><a href='#SkCanvas_writePixels_2_bitmap'>bitmap</a> does not have allocated pixels.</td>
|
|
</tr> <tr>
|
|
<td><a href='SkBitmap_Reference#Bitmap_Pixels'>bitmap pixels</a> could not be converted to <a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_colorType'>colorType</a>() or
|
|
<a href='#SkCanvas_imageInfo'>imageInfo</a>().<a href='#SkImageInfo_alphaType'>alphaType</a>().</td>
|
|
</tr> <tr>
|
|
<td><a href='SkCanvas_Reference#Canvas'>Canvas</a> pixels are not writable; for instance, <a href='SkCanvas_Reference#Canvas'>Canvas</a> is <a href='undocumented#Document'>document</a> based.</td>
|
|
</tr> <tr>
|
|
<td><a href='SkBitmap_Reference#Bitmap_Pixels'>bitmap pixels</a> are inaccessible; for instance, <a href='#SkCanvas_writePixels_2_bitmap'>bitmap</a> wraps a <a href='undocumented#Texture'>texture</a>.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_writePixels_2_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td>contains pixels copied to <a href='SkCanvas_Reference#Canvas'>Canvas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_writePixels_2_x'><code><strong>x</strong></code></a></td>
|
|
<td>offset into <a href='SkCanvas_Reference#Canvas'>Canvas</a> writable pixels in <a href='#SkCanvas_writePixels_2_x'>x</a>; may be negative</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_writePixels_2_y'><code><strong>y</strong></code></a></td>
|
|
<td>offset into <a href='SkCanvas_Reference#Canvas'>Canvas</a> writable pixels in <a href='#SkCanvas_writePixels_2_y'>y</a>; may be negative</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if pixels were written to <a href='SkCanvas_Reference#Canvas'>Canvas</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_writePixels_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_readPixels'>readPixels</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_writePixels'>writePixels</a>
|
|
|
|
<a name='State_Stack'></a>
|
|
|
|
---
|
|
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> maintains a stack of state that allows hierarchical drawing, commonly used
|
|
to implement windows and views. The initial state has an identity <a href='SkMatrix_Reference#Matrix'>matrix</a> and and
|
|
an infinite clip. Even with a wide-open clip, drawing is constrained by the
|
|
bounds of the <a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='SkSurface_Reference#Surface'>Surface</a> or <a href='undocumented#Device'>Device</a>.
|
|
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> savable state consists of Clip and <a href='SkMatrix_Reference#Matrix'>Matrix</a>.
|
|
Clip describes the area that may be drawn to.
|
|
<a href='SkMatrix_Reference#Matrix'>Matrix</a> transforms the geometry.
|
|
|
|
<a href='#SkCanvas_save'>save()</a>, <a href='#SkCanvas_saveLayer'>saveLayer</a>, <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a>, and <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a>
|
|
save state and return the depth of the stack.
|
|
|
|
<a href='#SkCanvas_restore'>restore()</a>, <a href='#SkCanvas_restoreToCount'>restoreToCount</a>, and <a href='#SkCanvas_destructor'>~SkCanvas()</a> revert state to its value when saved.
|
|
|
|
Each state on the stack intersects Clip with the previous Clip,
|
|
and concatenates <a href='SkMatrix_Reference#Matrix'>Matrix</a> with the previous <a href='SkMatrix_Reference#Matrix'>Matrix</a>.
|
|
The intersected Clip makes the drawing area the same or smaller;
|
|
the concatenated <a href='SkMatrix_Reference#Matrix'>Matrix</a> may move the origin and potentially scale or rotate
|
|
the coordinate space.
|
|
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a> does not require balancing the <a href='#State_Stack'>state stack</a> but it is a good idea
|
|
to do so. Calling <a href='#SkCanvas_save'>save()</a> without <a href='#SkCanvas_restore'>restore()</a> will eventually cause Skia to fail;
|
|
mismatched <a href='#SkCanvas_save'>save()</a> and <a href='#SkCanvas_restore'>restore()</a> create hard to find bugs.
|
|
|
|
It is not possible to use state to draw outside of the clip defined by the
|
|
previous state.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@State_Stack_a"><div>Draw to ever smaller clips; then restore drawing to full <a href='SkCanvas_Reference#Canvas'>canvas</a>.
|
|
Note that the second <a href='#SkCanvas_clipRect'>clipRect</a> is not permitted to enlarge Clip.
|
|
</div></fiddle-embed></div>
|
|
|
|
Each Clip uses the current <a href='SkMatrix_Reference#Matrix'>Matrix</a> for its coordinates.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@State_Stack_b"><div>While <a href='#SkCanvas_clipRect'>clipRect</a> is given the same rectangle twice, <a href='SkMatrix_Reference#Matrix'>Matrix</a> makes the second
|
|
<a href='#SkCanvas_clipRect'>clipRect</a> draw at half the <a href='undocumented#Size'>size</a> of the first.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a> <a href='#SkCanvas_restore'>restore()</a> <a href='#SkCanvas_restoreToCount'>restoreToCount</a>
|
|
|
|
<a name='SkCanvas_save'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkCanvas_save'>save()</a>
|
|
</pre>
|
|
|
|
Saves <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip.
|
|
Calling <a href='#SkCanvas_restore'>restore()</a> discards changes to <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip,
|
|
restoring the <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip to their state when <a href='#SkCanvas_save'>save()</a> was called.
|
|
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> may be changed by <a href='#SkCanvas_translate'>translate()</a>, <a href='#SkCanvas_scale'>scale()</a>, <a href='#SkCanvas_rotate'>rotate()</a>, <a href='#SkCanvas_skew'>skew()</a>, <a href='#SkCanvas_concat'>concat()</a>, <a href='#SkCanvas_setMatrix'>setMatrix</a>(),
|
|
and <a href='#SkCanvas_resetMatrix'>resetMatrix</a>(). Clip may be changed by <a href='#SkCanvas_clipRect'>clipRect</a>(), <a href='#SkCanvas_clipRRect'>clipRRect</a>(), <a href='#SkCanvas_clipPath'>clipPath</a>(), <a href='#SkCanvas_clipRegion'>clipRegion</a>().
|
|
|
|
Saved <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> state is put on a stack; multiple calls to <a href='#SkCanvas_save'>save()</a> should be balance
|
|
by an equal number of calls to <a href='#SkCanvas_restore'>restore()</a>.
|
|
|
|
Call <a href='#SkCanvas_restoreToCount'>restoreToCount</a>() with result to restore this and subsequent saves.
|
|
|
|
### Return Value
|
|
|
|
depth of saved stack
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_save"><div>The black square is translated 50 pixels down and to the right.
|
|
Restoring <a href='SkCanvas_Reference#Canvas'>Canvas</a> state removes <a href='#SkCanvas_translate'>translate()</a> from <a href='SkCanvas_Reference#Canvas'>Canvas</a> stack;
|
|
the red square is not translated, and is drawn at the origin.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_restoreToCount'>restoreToCount</a>
|
|
|
|
<a name='SkCanvas_restore'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_restore'>restore()</a>
|
|
</pre>
|
|
|
|
Removes changes to <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip since <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> state was
|
|
last saved. The state is removed from the stack.
|
|
|
|
Does nothing if the stack is empty.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_restore"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a> <a href='#SkCanvas_restoreToCount'>restoreToCount</a>
|
|
|
|
<a name='SkCanvas_getSaveCount'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkCanvas_getSaveCount'>getSaveCount</a>()const
|
|
</pre>
|
|
|
|
Returns the number of saved states, each containing: <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip.
|
|
Equals the number of <a href='#SkCanvas_save'>save()</a> calls less the number of <a href='#SkCanvas_restore'>restore()</a> calls plus one.
|
|
The save count of a new <a href='SkCanvas_Reference#Canvas'>canvas</a> is one.
|
|
|
|
### Return Value
|
|
|
|
depth of save state stack
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getSaveCount">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
depth = 1
|
|
depth = 2
|
|
depth = 1
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_restoreToCount'>restoreToCount</a>
|
|
|
|
<a name='SkCanvas_restoreToCount'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_restoreToCount'>restoreToCount</a>(int saveCount)
|
|
</pre>
|
|
|
|
Restores state to <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip values when <a href='#SkCanvas_save'>save()</a>, <a href='#SkCanvas_saveLayer'>saveLayer</a>(),
|
|
<a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a>(), or <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a>() returned <a href='#SkCanvas_restoreToCount_saveCount'>saveCount</a>.
|
|
|
|
Does nothing if <a href='#SkCanvas_restoreToCount_saveCount'>saveCount</a> is greater than <a href='#State_Stack'>state stack</a> count.
|
|
Restores state to initial values if <a href='#SkCanvas_restoreToCount_saveCount'>saveCount</a> is less than or equal to one.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_restoreToCount_saveCount'><code><strong>saveCount</strong></code></a></td>
|
|
<td>depth of <a href='#State_Stack'>state stack</a> to restore</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_restoreToCount">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
depth = 1
|
|
depth = 3
|
|
depth = 1
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_getSaveCount'>getSaveCount</a> <a href='#SkCanvas_save'>save</a>
|
|
|
|
<a name='Layer'></a>
|
|
|
|
<a href='SkCanvas_Reference#Layer'>Layer</a> allocates a temporary <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> to draw into. When the drawing is
|
|
complete, the <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> is drawn into the <a href='SkCanvas_Reference#Canvas'>Canvas</a>.
|
|
|
|
<a href='SkCanvas_Reference#Layer'>Layer</a> is saved in a stack along with other saved state. When state with a <a href='SkCanvas_Reference#Layer'>Layer</a>
|
|
is restored, the <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> is drawn into the previous <a href='SkCanvas_Reference#Layer'>Layer</a>.
|
|
|
|
<a href='SkCanvas_Reference#Layer'>Layer</a> may be initialized with the contents of the previous <a href='SkCanvas_Reference#Layer'>Layer</a>. When <a href='SkCanvas_Reference#Layer'>Layer</a> is
|
|
restored, its <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> can be modified by <a href='SkPaint_Reference#Paint'>Paint</a> passed to <a href='SkCanvas_Reference#Layer'>Layer</a> to apply
|
|
<a href='#Color_Alpha'>Color_Alpha</a>, <a href='#Color_Filter'>Color_Filter</a>, <a href='#Image_Filter'>Image_Filter</a>, and <a href='#Blend_Mode'>Blend_Mode</a>.
|
|
|
|
<a name='SkCanvas_saveLayer'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkCanvas_saveLayer'>saveLayer</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Saves <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip, and allocates a <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> for subsequent drawing.
|
|
Calling <a href='#SkCanvas_restore'>restore()</a> discards changes to <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip, and draws the <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>.
|
|
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> may be changed by <a href='#SkCanvas_translate'>translate()</a>, <a href='#SkCanvas_scale'>scale()</a>, <a href='#SkCanvas_rotate'>rotate()</a>, <a href='#SkCanvas_skew'>skew()</a>, <a href='#SkCanvas_concat'>concat()</a>,
|
|
<a href='#SkCanvas_setMatrix'>setMatrix</a>(), and <a href='#SkCanvas_resetMatrix'>resetMatrix</a>(). Clip may be changed by <a href='#SkCanvas_clipRect'>clipRect</a>(), <a href='#SkCanvas_clipRRect'>clipRRect</a>(),
|
|
<a href='#SkCanvas_clipPath'>clipPath</a>(), <a href='#SkCanvas_clipRegion'>clipRegion</a>().
|
|
|
|
<a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_saveLayer_bounds'>bounds</a> suggests but does not define the <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> <a href='undocumented#Size'>size</a>. To clip drawing to
|
|
a specific rectangle, use <a href='#SkCanvas_clipRect'>clipRect</a>().
|
|
|
|
Optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_saveLayer_paint'>paint</a> applies <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> when <a href='#SkCanvas_restore'>restore()</a> is called.
|
|
|
|
Call <a href='#SkCanvas_restoreToCount'>restoreToCount</a>() with returned value to restore this and subsequent saves.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_saveLayer_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td>hint to limit the <a href='undocumented#Size'>size</a> of the <a href='SkCanvas_Reference#Layer'>layer</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_saveLayer_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>graphics state for <a href='SkCanvas_Reference#Layer'>layer</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
depth of saved stack
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_saveLayer"><div>Rectangles are blurred by <a href='#Image_Filter'>Image_Filter</a> when <a href='#SkCanvas_restore'>restore()</a> draws <a href='SkCanvas_Reference#Layer'>Layer</a> to main
|
|
<a href='SkCanvas_Reference#Canvas'>Canvas</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a> <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>
|
|
|
|
<a name='SkCanvas_saveLayer_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkCanvas_saveLayer'>saveLayer</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Saves <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip, and allocates a <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> for subsequent drawing.
|
|
Calling <a href='#SkCanvas_restore'>restore()</a> discards changes to <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip, and draws the <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>.
|
|
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> may be changed by <a href='#SkCanvas_translate'>translate()</a>, <a href='#SkCanvas_scale'>scale()</a>, <a href='#SkCanvas_rotate'>rotate()</a>, <a href='#SkCanvas_skew'>skew()</a>, <a href='#SkCanvas_concat'>concat()</a>,
|
|
<a href='#SkCanvas_setMatrix'>setMatrix</a>(), and <a href='#SkCanvas_resetMatrix'>resetMatrix</a>(). Clip may be changed by <a href='#SkCanvas_clipRect'>clipRect</a>(), <a href='#SkCanvas_clipRRect'>clipRRect</a>(),
|
|
<a href='#SkCanvas_clipPath'>clipPath</a>(), <a href='#SkCanvas_clipRegion'>clipRegion</a>().
|
|
|
|
<a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_saveLayer_2_bounds'>bounds</a> suggests but does not define the <a href='SkCanvas_Reference#Layer'>layer</a> <a href='undocumented#Size'>size</a>. To clip drawing to
|
|
a specific rectangle, use <a href='#SkCanvas_clipRect'>clipRect</a>().
|
|
|
|
Optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_saveLayer_2_paint'>paint</a> applies <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> when <a href='#SkCanvas_restore'>restore()</a> is called.
|
|
|
|
Call <a href='#SkCanvas_restoreToCount'>restoreToCount</a>() with returned value to restore this and subsequent saves.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_saveLayer_2_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td>hint to limit the <a href='undocumented#Size'>size</a> of <a href='SkCanvas_Reference#Layer'>layer</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_saveLayer_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>graphics state for <a href='SkCanvas_Reference#Layer'>layer</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
depth of saved stack
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_saveLayer_2"><div>Rectangles are blurred by <a href='#Image_Filter'>Image_Filter</a> when <a href='#SkCanvas_restore'>restore()</a> draws <a href='SkCanvas_Reference#Layer'>Layer</a> to main <a href='SkCanvas_Reference#Canvas'>Canvas</a>.
|
|
The red rectangle is clipped; it does not fully fit on <a href='SkCanvas_Reference#Layer'>Layer</a>.
|
|
<a href='#Image_Filter'>Image_Filter</a> blurs past edge of <a href='SkCanvas_Reference#Layer'>Layer</a> so red rectangle is blurred on all sides.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a> <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>
|
|
|
|
<a name='SkCanvas_saveLayerPreserveLCDTextRequests'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Saves <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip, and allocates a <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> for subsequent drawing.
|
|
LCD <a href='undocumented#Text'>text</a> is preserved when the <a href='SkCanvas_Reference#Layer'>layer</a> is drawn to the prior <a href='SkCanvas_Reference#Layer'>layer</a>.
|
|
|
|
Calling <a href='#SkCanvas_restore'>restore()</a> discards changes to <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip, and draws <a href='SkCanvas_Reference#Layer'>layer</a>.
|
|
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> may be changed by <a href='#SkCanvas_translate'>translate()</a>, <a href='#SkCanvas_scale'>scale()</a>, <a href='#SkCanvas_rotate'>rotate()</a>, <a href='#SkCanvas_skew'>skew()</a>, <a href='#SkCanvas_concat'>concat()</a>,
|
|
<a href='#SkCanvas_setMatrix'>setMatrix</a>(), and <a href='#SkCanvas_resetMatrix'>resetMatrix</a>(). Clip may be changed by <a href='#SkCanvas_clipRect'>clipRect</a>(), <a href='#SkCanvas_clipRRect'>clipRRect</a>(),
|
|
<a href='#SkCanvas_clipPath'>clipPath</a>(), <a href='#SkCanvas_clipRegion'>clipRegion</a>().
|
|
|
|
<a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests_bounds'>bounds</a> suggests but does not define the <a href='SkCanvas_Reference#Layer'>layer</a> <a href='undocumented#Size'>size</a>. To clip drawing to
|
|
a specific rectangle, use <a href='#SkCanvas_clipRect'>clipRect</a>().
|
|
|
|
Optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests_paint'>paint</a> applies <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> when <a href='#SkCanvas_restore'>restore()</a> is called.
|
|
|
|
Call <a href='#SkCanvas_restoreToCount'>restoreToCount</a>() with returned value to restore this and subsequent saves.
|
|
|
|
Draw <a href='undocumented#Text'>text</a> on an opaque background so that LCD <a href='undocumented#Text'>text</a> blends correctly with the
|
|
prior <a href='SkCanvas_Reference#Layer'>layer</a>. LCD <a href='undocumented#Text'>text</a> drawn on a background with transparency may result in
|
|
incorrect blending.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_saveLayerPreserveLCDTextRequests_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td>hint to limit the <a href='undocumented#Size'>size</a> of <a href='SkCanvas_Reference#Layer'>layer</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_saveLayerPreserveLCDTextRequests_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>graphics state for <a href='SkCanvas_Reference#Layer'>layer</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
depth of saved stack
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="8460bf8b013f46c67e0bd96e13451aff"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a> <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>
|
|
|
|
<a name='SkCanvas_saveLayerAlpha'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, <a href='undocumented#U8CPU'>U8CPU</a> <a href='SkColor_Reference#Alpha'>alpha</a>)
|
|
</pre>
|
|
|
|
Saves <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip, and allocates <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> for subsequent drawing.
|
|
|
|
Calling <a href='#SkCanvas_restore'>restore()</a> discards changes to <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip,
|
|
and blends <a href='SkCanvas_Reference#Layer'>layer</a> with <a href='#SkCanvas_saveLayerAlpha_alpha'>alpha</a> opacity onto prior <a href='SkCanvas_Reference#Layer'>layer</a>.
|
|
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> may be changed by <a href='#SkCanvas_translate'>translate()</a>, <a href='#SkCanvas_scale'>scale()</a>, <a href='#SkCanvas_rotate'>rotate()</a>, <a href='#SkCanvas_skew'>skew()</a>, <a href='#SkCanvas_concat'>concat()</a>,
|
|
<a href='#SkCanvas_setMatrix'>setMatrix</a>(), and <a href='#SkCanvas_resetMatrix'>resetMatrix</a>(). Clip may be changed by <a href='#SkCanvas_clipRect'>clipRect</a>(), <a href='#SkCanvas_clipRRect'>clipRRect</a>(),
|
|
<a href='#SkCanvas_clipPath'>clipPath</a>(), <a href='#SkCanvas_clipRegion'>clipRegion</a>().
|
|
|
|
<a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_saveLayerAlpha_bounds'>bounds</a> suggests but does not define <a href='SkCanvas_Reference#Layer'>layer</a> <a href='undocumented#Size'>size</a>. To clip drawing to
|
|
a specific rectangle, use <a href='#SkCanvas_clipRect'>clipRect</a>().
|
|
|
|
<a href='#SkCanvas_saveLayerAlpha_alpha'>alpha</a> of zero is fully transparent, 255 is fully opaque.
|
|
|
|
Call <a href='#SkCanvas_restoreToCount'>restoreToCount</a>() with returned value to restore this and subsequent saves.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_saveLayerAlpha_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td>hint to limit the <a href='undocumented#Size'>size</a> of <a href='SkCanvas_Reference#Layer'>layer</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_saveLayerAlpha_alpha'><code><strong>alpha</strong></code></a></td>
|
|
<td>opacity of <a href='SkCanvas_Reference#Layer'>layer</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
depth of saved stack
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_saveLayerAlpha"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>
|
|
|
|
<a name='SkCanvas_SaveLayerFlagsSet'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkCanvas_SaveLayerFlagsSet'>SaveLayerFlagsSet</a> {
|
|
<a href='#SkCanvas_kPreserveLCDText_SaveLayerFlag'>kPreserveLCDText_SaveLayerFlag</a> = 1 << 1,
|
|
<a href='#SkCanvas_kInitWithPrevious_SaveLayerFlag'>kInitWithPrevious_SaveLayerFlag</a> = 1 << 2,
|
|
};
|
|
|
|
</pre>
|
|
|
|
<a name='SkCanvas_SaveLayerFlags'></a>
|
|
|
|
---
|
|
|
|
<a href='#SkCanvas_SaveLayerFlags'>SaveLayerFlags</a> provides options that may be used in any combination in <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>,
|
|
defining how <a href='SkCanvas_Reference#Layer'>Layer</a> allocated by <a href='#SkCanvas_saveLayer'>saveLayer</a> operates. It may be set to zero,
|
|
<a href='#SkCanvas_kPreserveLCDText_SaveLayerFlag'>kPreserveLCDText_SaveLayerFlag</a>, <a href='#SkCanvas_kInitWithPrevious_SaveLayerFlag'>kInitWithPrevious_SaveLayerFlag</a>, or both flags.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_kPreserveLCDText_SaveLayerFlag'><code>SkCanvas::kPreserveLCDText_SaveLayerFlag</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>2</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Creates <a href='SkCanvas_Reference#Layer'>Layer</a> for LCD <a href='undocumented#Text'>text</a>. Flag is ignored if <a href='SkCanvas_Reference#Layer'>Layer</a> <a href='SkPaint_Reference#Paint'>Paint</a> contains
|
|
<a href='#Image_Filter'>Image_Filter</a> or <a href='#Color_Filter'>Color_Filter</a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_kInitWithPrevious_SaveLayerFlag'><code>SkCanvas::kInitWithPrevious_SaveLayerFlag</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>4</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Initializes <a href='SkCanvas_Reference#Layer'>Layer</a> with the contents of the previous <a href='SkCanvas_Reference#Layer'>Layer</a>.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_kInitWithPrevious_SaveLayerFlag"><div><a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='SkCanvas_Reference#Layer'>Layer</a> captures red and blue <a href='undocumented#Circle'>circles</a> scaled up by four.
|
|
scalePaint blends <a href='SkCanvas_Reference#Layer'>Layer</a> back with transparency.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a> <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>
|
|
|
|
<a name='Layer_SaveLayerRec'></a>
|
|
|
|
<a name='SkCanvas_SaveLayerRec'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
struct <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a> {
|
|
|
|
<a href='#SkCanvas_SaveLayerRec_SaveLayerRec'>SaveLayerRec()</a>;
|
|
<a href='#SkCanvas_SaveLayerRec_SaveLayerRec'>SaveLayerRec</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>, <a href='#SkCanvas_SaveLayerFlags'>SaveLayerFlags</a> saveLayerFlags = 0);
|
|
<a href='#SkCanvas_SaveLayerRec_SaveLayerRec'>SaveLayerRec</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>, const <a href='undocumented#SkImageFilter'>SkImageFilter</a>* backdrop,
|
|
<a href='#SkCanvas_SaveLayerFlags'>SaveLayerFlags</a> saveLayerFlags);
|
|
|
|
const <a href='SkRect_Reference#SkRect'>SkRect</a>* <a href='#SkCanvas_SaveLayerRec_fBounds'>fBounds</a> = nullptr;
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='#SkCanvas_SaveLayerRec_fPaint'>fPaint</a> = nullptr;
|
|
const <a href='undocumented#SkImageFilter'>SkImageFilter</a>* <a href='#SkCanvas_SaveLayerRec_fBackdrop'>fBackdrop</a> = nullptr;
|
|
const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='#SkCanvas_SaveLayerRec_fClipMask'>fClipMask</a> = nullptr;
|
|
const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>* <a href='#SkCanvas_SaveLayerRec_fClipMatrix'>fClipMatrix</a> = nullptr;
|
|
<a href='#SkCanvas_SaveLayerFlags'>SaveLayerFlags</a> <a href='#SkCanvas_SaveLayerRec_fSaveLayerFlags'>fSaveLayerFlags</a> = 0;
|
|
};
|
|
|
|
</pre>
|
|
|
|
<a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a> contains the state used to create the <a href='SkCanvas_Reference#Layer'>Layer</a>.<table style='border-collapse: collapse; width: 62.5em'>
|
|
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Type</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Member</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const SkRect*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_SaveLayerRec_fBounds'><code>fBounds</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
<a href='#SkCanvas_SaveLayerRec_fBounds'>fBounds</a> is used as a hint to limit the <a href='undocumented#Size'>size</a> of <a href='SkCanvas_Reference#Layer'>Layer</a>; may be nullptr.
|
|
<a href='#SkCanvas_SaveLayerRec_fBounds'>fBounds</a> suggests but does not define <a href='SkCanvas_Reference#Layer'>Layer</a> <a href='undocumented#Size'>size</a>. To clip drawing to
|
|
a specific rectangle, use <a href='#SkCanvas_clipRect'>clipRect</a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const SkPaint*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_SaveLayerRec_fPaint'><code>fPaint</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
<a href='#SkCanvas_SaveLayerRec_fPaint'>fPaint</a> modifies how <a href='SkCanvas_Reference#Layer'>Layer</a> overlays the prior <a href='SkCanvas_Reference#Layer'>Layer</a>; may be nullptr.
|
|
<a href='#Color_Alpha'>Color_Alpha</a>, <a href='#Blend_Mode'>Blend_Mode</a>, <a href='#Color_Filter'>Color_Filter</a>, <a href='#Draw_Looper'>Draw_Looper</a>, <a href='#Image_Filter'>Image_Filter</a>, and
|
|
<a href='#Mask_Filter'>Mask_Filter</a> affect <a href='SkCanvas_Reference#Layer'>Layer</a> draw.
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const SkImageFilter*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_SaveLayerRec_fBackdrop'><code>fBackdrop</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
<a href='#SkCanvas_SaveLayerRec_fBackdrop'>fBackdrop</a> applies <a href='#Image_Filter'>Image_Filter</a> to the prior <a href='SkCanvas_Reference#Layer'>Layer</a> when copying to the <a href='SkCanvas_Reference#Layer'>Layer</a>;
|
|
may be nullptr. Use <a href='#SkCanvas_kInitWithPrevious_SaveLayerFlag'>kInitWithPrevious_SaveLayerFlag</a> to copy the
|
|
prior <a href='SkCanvas_Reference#Layer'>Layer</a> without an <a href='#Image_Filter'>Image_Filter</a>.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const SkImage*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_SaveLayerRec_fClipMask'><code>fClipMask</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
<a href='#SkCanvas_restore'>restore()</a> clips <a href='SkCanvas_Reference#Layer'>Layer</a> by the <a href='#Color_Alpha'>Color_Alpha</a> channel of <a href='#SkCanvas_SaveLayerRec_fClipMask'>fClipMask</a> when
|
|
<a href='SkCanvas_Reference#Layer'>Layer</a> is copied to <a href='undocumented#Device'>Device</a>. <a href='#SkCanvas_SaveLayerRec_fClipMask'>fClipMask</a> may be nullptr. .
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const SkMatrix*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_SaveLayerRec_fClipMatrix'><code>fClipMatrix</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
<a href='#SkCanvas_SaveLayerRec_fClipMatrix'>fClipMatrix</a> transforms <a href='#SkCanvas_SaveLayerRec_fClipMask'>fClipMask</a> before it clips <a href='SkCanvas_Reference#Layer'>Layer</a>. If
|
|
<a href='#SkCanvas_SaveLayerRec_fClipMask'>fClipMask</a> describes a translucent gradient, it may be scaled and rotated
|
|
without introducing artifacts. <a href='#SkCanvas_SaveLayerRec_fClipMatrix'>fClipMatrix</a> may be nullptr.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>SaveLayerFlags</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_SaveLayerRec_fSaveLayerFlags'><code>fSaveLayerFlags</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
<a href='#SkCanvas_SaveLayerRec_fSaveLayerFlags'>fSaveLayerFlags</a> are used to create <a href='SkCanvas_Reference#Layer'>Layer</a> without transparency,
|
|
create <a href='SkCanvas_Reference#Layer'>Layer</a> for LCD <a href='undocumented#Text'>text</a>, and to create <a href='SkCanvas_Reference#Layer'>Layer</a> with the
|
|
contents of the previous <a href='SkCanvas_Reference#Layer'>Layer</a>.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_SaveLayerRec"><div><a href='SkCanvas_Reference#Canvas'>Canvas</a> <a href='SkCanvas_Reference#Layer'>Layer</a> captures a red <a href='#Paint_Anti_Alias'>Anti_Aliased</a> <a href='undocumented#Circle'>circle</a> and a blue <a href='undocumented#Alias'>Aliased</a> <a href='undocumented#Circle'>circle</a> scaled
|
|
up by four. After drawing another red <a href='undocumented#Circle'>circle</a> without scaling on top, the <a href='SkCanvas_Reference#Layer'>Layer</a> is
|
|
transferred to the main <a href='SkCanvas_Reference#Canvas'>canvas</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
<a name='Layer_SaveLayerRec_Constructors'></a>
|
|
|
|
<a name='SkCanvas_SaveLayerRec_SaveLayerRec'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkCanvas_SaveLayerRec_SaveLayerRec'>SaveLayerRec()</a>
|
|
</pre>
|
|
|
|
Sets <a href='#SkCanvas_SaveLayerRec_fBounds'>fBounds</a>, <a href='#SkCanvas_SaveLayerRec_fPaint'>fPaint</a>, and <a href='#SkCanvas_SaveLayerRec_fBackdrop'>fBackdrop</a> to nullptr. Clears <a href='#SkCanvas_SaveLayerRec_fSaveLayerFlags'>fSaveLayerFlags</a>.
|
|
|
|
### Return Value
|
|
|
|
empty <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="b5cea1eed80a0eb04ddbab3f36dff73f">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
rec1 == rec2
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a>
|
|
|
|
<a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>, <a href='#SkCanvas_SaveLayerFlags'>SaveLayerFlags</a> saveLayerFlags = 0)
|
|
</pre>
|
|
|
|
Sets <a href='#SkCanvas_SaveLayerRec_fBounds'>fBounds</a>, <a href='#SkCanvas_SaveLayerRec_fPaint'>fPaint</a>, and <a href='#SkCanvas_SaveLayerRec_fSaveLayerFlags'>fSaveLayerFlags</a>; sets <a href='#SkCanvas_SaveLayerRec_fBackdrop'>fBackdrop</a> to nullptr.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td><a href='SkCanvas_Reference#Layer'>layer</a> dimensions; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>applied to <a href='SkCanvas_Reference#Layer'>layer</a> when overlaying prior <a href='SkCanvas_Reference#Layer'>layer</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_saveLayerFlags'><code><strong>saveLayerFlags</strong></code></a></td>
|
|
<td><a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a> options to modify <a href='SkCanvas_Reference#Layer'>layer</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a> with empty <a href='#SkCanvas_SaveLayerRec_fBackdrop'>fBackdrop</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
rec1 == rec2
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a>
|
|
|
|
<a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_const_SkImageFilter_star'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>* bounds, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>, const <a href='undocumented#SkImageFilter'>SkImageFilter</a>* backdrop,
|
|
<a href='#SkCanvas_SaveLayerFlags'>SaveLayerFlags</a> saveLayerFlags)
|
|
</pre>
|
|
|
|
Sets <a href='#SkCanvas_SaveLayerRec_fBounds'>fBounds</a>, <a href='#SkCanvas_SaveLayerRec_fPaint'>fPaint</a>, <a href='#SkCanvas_SaveLayerRec_fBackdrop'>fBackdrop</a>, and <a href='#SkCanvas_SaveLayerRec_fSaveLayerFlags'>fSaveLayerFlags</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_const_SkImageFilter_star_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td><a href='SkCanvas_Reference#Layer'>layer</a> dimensions; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_const_SkImageFilter_star_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>applied to <a href='SkCanvas_Reference#Layer'>layer</a> when overlaying prior <a href='SkCanvas_Reference#Layer'>layer</a>;</td>
|
|
</tr>
|
|
</table>
|
|
|
|
may be nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_const_SkImageFilter_star_backdrop'><code><strong>backdrop</strong></code></a></td>
|
|
<td>prior <a href='SkCanvas_Reference#Layer'>layer</a> copied with <a href='undocumented#SkImageFilter'>SkImageFilter</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_const_SkImageFilter_star_saveLayerFlags'><code><strong>saveLayerFlags</strong></code></a></td>
|
|
<td><a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a> options to modify <a href='SkCanvas_Reference#Layer'>layer</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
<a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a> fully specified
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_SaveLayerRec_const_SkRect_star_const_SkPaint_star_const_SkImageFilter_star">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
rec1 == rec2
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a>
|
|
|
|
<a name='SkCanvas_saveLayer_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
int <a href='#SkCanvas_saveLayer'>saveLayer</a>(const <a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a>& layerRec)
|
|
</pre>
|
|
|
|
Saves <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip, and allocates <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> for subsequent drawing.
|
|
|
|
Calling <a href='#SkCanvas_restore'>restore()</a> discards changes to <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and clip,
|
|
and blends <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> with <a href='SkColor_Reference#Alpha'>alpha</a> opacity onto the prior <a href='SkCanvas_Reference#Layer'>layer</a>.
|
|
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> may be changed by <a href='#SkCanvas_translate'>translate()</a>, <a href='#SkCanvas_scale'>scale()</a>, <a href='#SkCanvas_rotate'>rotate()</a>, <a href='#SkCanvas_skew'>skew()</a>, <a href='#SkCanvas_concat'>concat()</a>,
|
|
<a href='#SkCanvas_setMatrix'>setMatrix</a>(), and <a href='#SkCanvas_resetMatrix'>resetMatrix</a>(). Clip may be changed by <a href='#SkCanvas_clipRect'>clipRect</a>(), <a href='#SkCanvas_clipRRect'>clipRRect</a>(),
|
|
<a href='#SkCanvas_clipPath'>clipPath</a>(), <a href='#SkCanvas_clipRegion'>clipRegion</a>().
|
|
|
|
<a href='#SkCanvas_SaveLayerRec'>SaveLayerRec</a> contains the state used to create the <a href='SkCanvas_Reference#Layer'>layer</a>.
|
|
|
|
Call <a href='#SkCanvas_restoreToCount'>restoreToCount</a>() with returned value to restore this and subsequent saves.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_saveLayer_3_layerRec'><code><strong>layerRec</strong></code></a></td>
|
|
<td><a href='SkCanvas_Reference#Layer'>layer</a> state</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
depth of save <a href='#State_Stack'>state stack</a> before this call was made.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_saveLayer_3"><div>The example draws an <a href='SkImage_Reference#Image'>image</a>, and saves it into a <a href='SkCanvas_Reference#Layer'>Layer</a> with <a href='#SkCanvas_kInitWithPrevious_SaveLayerFlag'>kInitWithPrevious_SaveLayerFlag</a>.
|
|
Next it punches a hole in <a href='SkCanvas_Reference#Layer'>Layer</a> and restore with <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>::<a href='#SkBlendMode_kPlus'>kPlus</a>.
|
|
Where <a href='SkCanvas_Reference#Layer'>Layer</a> was cleared, the original <a href='SkImage_Reference#Image'>image</a> will draw unchanged.
|
|
Outside of the <a href='undocumented#Circle'>circle</a> the mandrill is brightened.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_save'>save</a> <a href='#SkCanvas_restore'>restore</a> <a href='#SkCanvas_saveLayer'>saveLayer</a> <a href='#SkCanvas_saveLayerPreserveLCDTextRequests'>saveLayerPreserveLCDTextRequests</a> <a href='#SkCanvas_saveLayerAlpha'>saveLayerAlpha</a>
|
|
|
|
<a name='Matrix'></a>
|
|
|
|
<a name='SkCanvas_translate'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void translate(<a href='undocumented#SkScalar'>SkScalar</a> dx, <a href='undocumented#SkScalar'>SkScalar</a> dy)
|
|
</pre>
|
|
|
|
Translates <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> by <a href='#SkCanvas_translate_dx'>dx</a> along the x-axis and <a href='#SkCanvas_translate_dy'>dy</a> along the y-axis.
|
|
|
|
Mathematically, replaces <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> with a translation <a href='SkMatrix_Reference#Matrix'>matrix</a>
|
|
<a href='undocumented#Premultiply'>premultiplied</a> with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
This has the effect of moving the drawing by (<a href='#SkCanvas_translate_dx'>dx</a>, <a href='#SkCanvas_translate_dy'>dy</a>) before transforming
|
|
the result with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_translate_dx'><code><strong>dx</strong></code></a></td>
|
|
<td>distance to translate on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_translate_dy'><code><strong>dy</strong></code></a></td>
|
|
<td>distance to translate on y-axis</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_translate"><div><a href='#SkCanvas_scale'>scale()</a> followed by <a href='#SkCanvas_translate'>translate()</a> produces different results from <a href='#SkCanvas_translate'>translate()</a> followed
|
|
by <a href='#SkCanvas_scale'>scale()</a>.
|
|
|
|
The blue stroke follows translate of (50, 50); a black
|
|
fill follows scale of (2, 1/2.f). After restoring the clip, which resets
|
|
<a href='SkMatrix_Reference#Matrix'>Matrix</a>, a red frame follows the same scale of (2, 1/2.f); a gray fill
|
|
follows translate of (50, 50).
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_concat'>concat()</a> <a href='#SkCanvas_scale'>scale()</a> <a href='#SkCanvas_skew'>skew()</a> <a href='#SkCanvas_rotate'>rotate()</a> <a href='#SkCanvas_setMatrix'>setMatrix</a>
|
|
|
|
<a name='SkCanvas_scale'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void scale(<a href='undocumented#SkScalar'>SkScalar</a> sx, <a href='undocumented#SkScalar'>SkScalar</a> sy)
|
|
</pre>
|
|
|
|
Scales <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> by <a href='#SkCanvas_scale_sx'>sx</a> on the x-axis and <a href='#SkCanvas_scale_sy'>sy</a> on the y-axis.
|
|
|
|
Mathematically, replaces <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> with a scale <a href='SkMatrix_Reference#Matrix'>matrix</a>
|
|
<a href='undocumented#Premultiply'>premultiplied</a> with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
This has the effect of scaling the drawing by (<a href='#SkCanvas_scale_sx'>sx</a>, <a href='#SkCanvas_scale_sy'>sy</a>) before transforming
|
|
the result with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_scale_sx'><code><strong>sx</strong></code></a></td>
|
|
<td>amount to scale on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_scale_sy'><code><strong>sy</strong></code></a></td>
|
|
<td>amount to scale on y-axis</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_scale"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_concat'>concat()</a> <a href='#SkCanvas_translate'>translate()</a> <a href='#SkCanvas_skew'>skew()</a> <a href='#SkCanvas_rotate'>rotate()</a> <a href='#SkCanvas_setMatrix'>setMatrix</a>
|
|
|
|
<a name='SkCanvas_rotate'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void rotate(<a href='undocumented#SkScalar'>SkScalar</a> degrees)
|
|
</pre>
|
|
|
|
Rotates <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> by <a href='#SkCanvas_rotate_degrees'>degrees</a>. Positive <a href='#SkCanvas_rotate_degrees'>degrees</a> rotates clockwise.
|
|
|
|
Mathematically, replaces <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> with a rotation <a href='SkMatrix_Reference#Matrix'>matrix</a>
|
|
<a href='undocumented#Premultiply'>premultiplied</a> with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
This has the effect of rotating the drawing by <a href='#SkCanvas_rotate_degrees'>degrees</a> before transforming
|
|
the result with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_rotate_degrees'><code><strong>degrees</strong></code></a></td>
|
|
<td>amount to rotate, in <a href='#SkCanvas_rotate_degrees'>degrees</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_rotate"><div>Draw clock hands at time 5:10. The hour hand and minute hand <a href='SkPoint_Reference#Point'>point</a> up and
|
|
are rotated clockwise.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_concat'>concat()</a> <a href='#SkCanvas_translate'>translate()</a> <a href='#SkCanvas_skew'>skew()</a> <a href='#SkCanvas_scale'>scale()</a> <a href='#SkCanvas_setMatrix'>setMatrix</a>
|
|
|
|
<a name='SkCanvas_rotate_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void rotate(<a href='undocumented#SkScalar'>SkScalar</a> degrees, <a href='undocumented#SkScalar'>SkScalar</a> px, <a href='undocumented#SkScalar'>SkScalar</a> py)
|
|
</pre>
|
|
|
|
Rotates <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> by <a href='#SkCanvas_rotate_2_degrees'>degrees</a> about a <a href='SkPoint_Reference#Point'>point</a> at (<a href='#SkCanvas_rotate_2_px'>px</a>, <a href='#SkCanvas_rotate_2_py'>py</a>). Positive <a href='#SkCanvas_rotate_2_degrees'>degrees</a> rotates
|
|
clockwise.
|
|
|
|
Mathematically, constructs a rotation <a href='SkMatrix_Reference#Matrix'>matrix</a>; <a href='undocumented#Premultiply'>premultiplies</a> the rotation <a href='SkMatrix_Reference#Matrix'>matrix</a> by
|
|
a translation <a href='SkMatrix_Reference#Matrix'>matrix</a>; then replaces <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> with the resulting <a href='SkMatrix_Reference#Matrix'>matrix</a>
|
|
<a href='undocumented#Premultiply'>premultiplied</a> with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
This has the effect of rotating the drawing about a given <a href='SkPoint_Reference#Point'>point</a> before
|
|
transforming the result with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_rotate_2_degrees'><code><strong>degrees</strong></code></a></td>
|
|
<td>amount to rotate, in <a href='#SkCanvas_rotate_2_degrees'>degrees</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_rotate_2_px'><code><strong>px</strong></code></a></td>
|
|
<td>x-axis value of the <a href='SkPoint_Reference#Point'>point</a> to rotate about</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_rotate_2_py'><code><strong>py</strong></code></a></td>
|
|
<td>y-axis value of the <a href='SkPoint_Reference#Point'>point</a> to rotate about</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_rotate_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_concat'>concat()</a> <a href='#SkCanvas_translate'>translate()</a> <a href='#SkCanvas_skew'>skew()</a> <a href='#SkCanvas_scale'>scale()</a> <a href='#SkCanvas_setMatrix'>setMatrix</a>
|
|
|
|
<a name='SkCanvas_skew'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void skew(<a href='undocumented#SkScalar'>SkScalar</a> sx, <a href='undocumented#SkScalar'>SkScalar</a> sy)
|
|
</pre>
|
|
|
|
Skews <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> by <a href='#SkCanvas_skew_sx'>sx</a> on the x-axis and <a href='#SkCanvas_skew_sy'>sy</a> on the y-axis. A positive value of <a href='#SkCanvas_skew_sx'>sx</a>
|
|
skews the drawing right as y-axis values increase; a positive value of <a href='#SkCanvas_skew_sy'>sy</a> skews
|
|
the drawing down as x-axis values increase.
|
|
|
|
Mathematically, replaces <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> with a skew <a href='SkMatrix_Reference#Matrix'>matrix</a> <a href='undocumented#Premultiply'>premultiplied</a> with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
This has the effect of skewing the drawing by (<a href='#SkCanvas_skew_sx'>sx</a>, <a href='#SkCanvas_skew_sy'>sy</a>) before transforming
|
|
the result with <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_skew_sx'><code><strong>sx</strong></code></a></td>
|
|
<td>amount to skew on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_skew_sy'><code><strong>sy</strong></code></a></td>
|
|
<td>amount to skew on y-axis</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_skew"><div>Black <a href='undocumented#Text'>text</a> mimics an oblique <a href='undocumented#Text'>text</a> style by using a negative skew on x-axis
|
|
that shifts the geometry to the right as the y-axis values decrease.
|
|
Red <a href='undocumented#Text'>text</a> uses a positive skew on y-axis to shift the geometry down
|
|
as the x-axis values increase.
|
|
Blue <a href='undocumented#Text'>text</a> combines <a href='#SkCanvas_skew_sx'>sx</a> and <a href='#SkCanvas_skew_sy'>sy</a> skew to rotate and scale.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_concat'>concat()</a> <a href='#SkCanvas_translate'>translate()</a> <a href='#SkCanvas_rotate'>rotate()</a> <a href='#SkCanvas_scale'>scale()</a> <a href='#SkCanvas_setMatrix'>setMatrix</a>
|
|
|
|
<a name='SkCanvas_concat'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_concat'>concat</a>(const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& <a href='SkMatrix_Reference#Matrix'>matrix</a>)
|
|
</pre>
|
|
|
|
Replaces <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> with <a href='#SkCanvas_concat_matrix'>matrix</a> <a href='undocumented#Premultiply'>premultiplied</a> with existing <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
This has the effect of transforming the drawn geometry by <a href='#SkCanvas_concat_matrix'>matrix</a>, before
|
|
transforming the result with existing <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_concat_matrix'><code><strong>matrix</strong></code></a></td>
|
|
<td><a href='#SkCanvas_concat_matrix'>matrix</a> to <a href='undocumented#Premultiply'>premultiply</a> with existing <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_concat"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_translate'>translate()</a> <a href='#SkCanvas_rotate'>rotate()</a> <a href='#SkCanvas_scale'>scale()</a> <a href='#SkCanvas_skew'>skew()</a> <a href='#SkCanvas_setMatrix'>setMatrix</a>
|
|
|
|
<a name='SkCanvas_setMatrix'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_setMatrix'>setMatrix</a>(const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& <a href='SkMatrix_Reference#Matrix'>matrix</a>)
|
|
</pre>
|
|
|
|
Replaces <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> with <a href='#SkCanvas_setMatrix_matrix'>matrix</a>.
|
|
Unlike <a href='#SkCanvas_concat'>concat()</a>, any prior <a href='#SkCanvas_setMatrix_matrix'>matrix</a> state is overwritten.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_setMatrix_matrix'><code><strong>matrix</strong></code></a></td>
|
|
<td><a href='#SkCanvas_setMatrix_matrix'>matrix</a> to copy, replacing existing <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_setMatrix"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_resetMatrix'>resetMatrix</a> <a href='#SkCanvas_concat'>concat()</a> <a href='#SkCanvas_translate'>translate()</a> <a href='#SkCanvas_rotate'>rotate()</a> <a href='#SkCanvas_scale'>scale()</a> <a href='#SkCanvas_skew'>skew()</a>
|
|
|
|
<a name='SkCanvas_resetMatrix'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_resetMatrix'>resetMatrix</a>()
|
|
</pre>
|
|
|
|
Sets <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> to the identity <a href='SkMatrix_Reference#Matrix'>matrix</a>.
|
|
Any prior <a href='SkMatrix_Reference#Matrix'>matrix</a> state is overwritten.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_resetMatrix"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_setMatrix'>setMatrix</a> <a href='#SkCanvas_concat'>concat()</a> <a href='#SkCanvas_translate'>translate()</a> <a href='#SkCanvas_rotate'>rotate()</a> <a href='#SkCanvas_scale'>scale()</a> <a href='#SkCanvas_skew'>skew()</a>
|
|
|
|
<a name='SkCanvas_getTotalMatrix'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>& <a href='#SkCanvas_getTotalMatrix'>getTotalMatrix</a>()const
|
|
</pre>
|
|
|
|
Returns <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
This does not account for translation by <a href='undocumented#SkBaseDevice'>SkBaseDevice</a> or <a href='SkSurface_Reference#SkSurface'>SkSurface</a>.
|
|
|
|
### Return Value
|
|
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> in <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getTotalMatrix">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
isIdentity true
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_setMatrix'>setMatrix</a> <a href='#SkCanvas_resetMatrix'>resetMatrix</a> <a href='#SkCanvas_concat'>concat()</a>
|
|
|
|
<a name='Clip'></a>
|
|
|
|
---
|
|
|
|
Clip is built from a stack of clipping <a href='SkPath_Reference#Path'>paths</a>. Each <a href='SkPath_Reference#Path'>Path</a> in the
|
|
stack can be constructed from one or more <a href='#Path_Overview_Contour'>Path_Contour</a> elements. The
|
|
<a href='#Path_Overview_Contour'>Path_Contour</a> may be composed of any number of <a href='#Path_Verb'>Path_Verb</a> segments. Each
|
|
<a href='#Path_Overview_Contour'>Path_Contour</a> forms a closed area; <a href='#Path_Fill_Type'>Path_Fill_Type</a> defines the area enclosed
|
|
by <a href='#Path_Overview_Contour'>Path_Contour</a>.
|
|
|
|
Clip stack of <a href='SkPath_Reference#Path'>Path</a> elements successfully restrict the <a href='SkPath_Reference#Path'>Path</a> area. Each
|
|
<a href='SkPath_Reference#Path'>Path</a> is transformed by <a href='SkMatrix_Reference#Matrix'>Matrix</a>, then intersected with or subtracted from the
|
|
prior Clip to form the replacement Clip. Use <a href='undocumented#SkClipOp'>SkClipOp</a>::<a href='#SkClipOp_kDifference'>kDifference</a>
|
|
to subtract <a href='SkPath_Reference#Path'>Path</a> from Clip; use <a href='undocumented#SkClipOp'>SkClipOp</a>::<a href='#SkClipOp_kIntersect'>kIntersect</a> to intersect <a href='SkPath_Reference#Path'>Path</a>
|
|
with Clip.
|
|
|
|
A clipping <a href='SkPath_Reference#Path'>Path</a> may be <a href='#Paint_Anti_Alias'>Anti_Aliased</a>; if <a href='SkPath_Reference#Path'>Path</a>, after transformation, is
|
|
composed of horizontal and vertical <a href='undocumented#Line'>lines</a>, clearing <a href='#Paint_Anti_Alias'>Anti_Alias</a> allows whole pixels
|
|
to either be inside or outside the clip. The fastest drawing has a <a href='undocumented#Alias'>Aliased</a>,
|
|
rectangular clip.
|
|
|
|
If clipping <a href='SkPath_Reference#Path'>Path</a> has <a href='#Paint_Anti_Alias'>Anti_Alias</a> set, clip may partially clip a <a href='undocumented#Pixel'>pixel</a>, requiring
|
|
that drawing blend partially with the destination along the edge. A rotated
|
|
rectangular <a href='#Paint_Anti_Alias'>Anti_Aliased</a> clip looks smoother but draws slower.
|
|
|
|
Clip can combine with <a href='SkRect_Reference#Rect'>Rect</a> and <a href='#RRect'>Round_Rect</a> primitives; like
|
|
<a href='SkPath_Reference#Path'>Path</a>, these are transformed by <a href='SkMatrix_Reference#Matrix'>Matrix</a> before they are combined with Clip.
|
|
|
|
Clip can combine with <a href='SkRegion_Reference#Region'>Region</a>. <a href='SkRegion_Reference#Region'>Region</a> is assumed to be in <a href='undocumented#Device'>Device</a> coordinates
|
|
and is unaffected by <a href='SkMatrix_Reference#Matrix'>Matrix</a>.
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Clip"><div>Draw a red <a href='undocumented#Circle'>circle</a> with an <a href='undocumented#Alias'>Aliased</a> clip and an <a href='#Paint_Anti_Alias'>Anti_Aliased</a> clip.
|
|
Use an <a href='SkImage_Reference#Image'>image filter</a> to zoom into the pixels drawn.
|
|
The edge of the <a href='undocumented#Alias'>Aliased</a> clip fully draws pixels in the red <a href='undocumented#Circle'>circle</a>.
|
|
The edge of the <a href='#Paint_Anti_Alias'>Anti_Aliased</a> clip partially draws pixels in the red <a href='undocumented#Circle'>circle</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
<a name='SkCanvas_clipRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipRect'>clipRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, <a href='undocumented#SkClipOp'>SkClipOp</a> op, bool doAntiAlias)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection or difference of clip and <a href='#SkCanvas_clipRect_rect'>rect</a>,
|
|
with an <a href='undocumented#Alias'>aliased</a> or <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a> clip edge. <a href='#SkCanvas_clipRect_rect'>rect</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>
|
|
before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipRect_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRect_op'><code><strong>op</strong></code></a></td>
|
|
<td><a href='undocumented#SkClipOp'>SkClipOp</a> to apply to clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRect_doAntiAlias'><code><strong>doAntiAlias</strong></code></a></td>
|
|
<td>true if clip is to be <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipRect"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRRect'>clipRRect</a> <a href='#SkCanvas_clipPath'>clipPath</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipRect_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipRect'>clipRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, <a href='undocumented#SkClipOp'>SkClipOp</a> op)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection or difference of clip and <a href='#SkCanvas_clipRect_2_rect'>rect</a>.
|
|
Resulting clip is <a href='undocumented#Alias'>aliased</a>; pixels are fully contained by the clip.
|
|
<a href='#SkCanvas_clipRect_2_rect'>rect</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipRect_2_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRect_2_op'><code><strong>op</strong></code></a></td>
|
|
<td><a href='undocumented#SkClipOp'>SkClipOp</a> to apply to clip</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipRect_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRRect'>clipRRect</a> <a href='#SkCanvas_clipPath'>clipPath</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipRect_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipRect'>clipRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, bool doAntiAlias = false)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection of clip and <a href='#SkCanvas_clipRect_3_rect'>rect</a>.
|
|
Resulting clip is <a href='undocumented#Alias'>aliased</a>; pixels are fully contained by the clip.
|
|
<a href='#SkCanvas_clipRect_3_rect'>rect</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>
|
|
before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipRect_3_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRect_3_doAntiAlias'><code><strong>doAntiAlias</strong></code></a></td>
|
|
<td>true if clip is to be <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipRect_3"><div>A <a href='undocumented#Circle'>circle</a> drawn in pieces looks uniform when drawn <a href='undocumented#Alias'>Aliased</a>.
|
|
The same <a href='undocumented#Circle'>circle</a> pieces blend with pixels more than once when <a href='#Paint_Anti_Alias'>Anti_Aliased</a>,
|
|
visible as a thin pair of <a href='undocumented#Line'>lines</a> through the right <a href='undocumented#Circle'>circle</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRRect'>clipRRect</a> <a href='#SkCanvas_clipPath'>clipPath</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipRRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipRRect'>clipRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, <a href='undocumented#SkClipOp'>SkClipOp</a> op, bool doAntiAlias)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection or difference of clip and <a href='#SkCanvas_clipRRect_rrect'>rrect</a>,
|
|
with an <a href='undocumented#Alias'>aliased</a> or <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a> clip edge.
|
|
<a href='#SkCanvas_clipRRect_rrect'>rrect</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>
|
|
before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipRRect_rrect'><code><strong>rrect</strong></code></a></td>
|
|
<td><a href='SkRRect_Reference#SkRRect'>SkRRect</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRRect_op'><code><strong>op</strong></code></a></td>
|
|
<td><a href='undocumented#SkClipOp'>SkClipOp</a> to apply to clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRRect_doAntiAlias'><code><strong>doAntiAlias</strong></code></a></td>
|
|
<td>true if clip is to be <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipRRect"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRect'>clipRect</a> <a href='#SkCanvas_clipPath'>clipPath</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipRRect_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipRRect'>clipRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, <a href='undocumented#SkClipOp'>SkClipOp</a> op)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection or difference of clip and <a href='#SkCanvas_clipRRect_2_rrect'>rrect</a>.
|
|
Resulting clip is <a href='undocumented#Alias'>aliased</a>; pixels are fully contained by the clip.
|
|
<a href='#SkCanvas_clipRRect_2_rrect'>rrect</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipRRect_2_rrect'><code><strong>rrect</strong></code></a></td>
|
|
<td><a href='SkRRect_Reference#SkRRect'>SkRRect</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRRect_2_op'><code><strong>op</strong></code></a></td>
|
|
<td><a href='undocumented#SkClipOp'>SkClipOp</a> to apply to clip</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipRRect_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRect'>clipRect</a> <a href='#SkCanvas_clipPath'>clipPath</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipRRect_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipRRect'>clipRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, bool doAntiAlias = false)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection of clip and <a href='#SkCanvas_clipRRect_3_rrect'>rrect</a>,
|
|
with an <a href='undocumented#Alias'>aliased</a> or <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a> clip edge.
|
|
<a href='#SkCanvas_clipRRect_3_rrect'>rrect</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipRRect_3_rrect'><code><strong>rrect</strong></code></a></td>
|
|
<td><a href='SkRRect_Reference#SkRRect'>SkRRect</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRRect_3_doAntiAlias'><code><strong>doAntiAlias</strong></code></a></td>
|
|
<td>true if clip is to be <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipRRect_3"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRect'>clipRect</a> <a href='#SkCanvas_clipPath'>clipPath</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipPath'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipPath'>clipPath</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>, <a href='undocumented#SkClipOp'>SkClipOp</a> op, bool doAntiAlias)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection or difference of clip and <a href='#SkCanvas_clipPath_path'>path</a>,
|
|
with an <a href='undocumented#Alias'>aliased</a> or <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a> clip edge. <a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_FillType'>FillType</a> determines if <a href='#SkCanvas_clipPath_path'>path</a>
|
|
describes the area inside or outside its <a href='SkPath_Overview#Contour'>contours</a>; and if <a href='SkPath_Overview#Contour'>path contour</a> overlaps
|
|
itself or another <a href='SkPath_Overview#Contour'>path contour</a>, whether the overlaps form part of the area.
|
|
<a href='#SkCanvas_clipPath_path'>path</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipPath_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#SkPath'>SkPath</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipPath_op'><code><strong>op</strong></code></a></td>
|
|
<td><a href='undocumented#SkClipOp'>SkClipOp</a> to apply to clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipPath_doAntiAlias'><code><strong>doAntiAlias</strong></code></a></td>
|
|
<td>true if clip is to be <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipPath"><div>Top figure uses <a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_kInverseWinding_FillType'>kInverseWinding_FillType</a> and <a href='undocumented#SkClipOp'>SkClipOp</a>::<a href='#SkClipOp_kDifference'>kDifference</a>;
|
|
area outside clip is subtracted from <a href='undocumented#Circle'>circle</a>.
|
|
|
|
Bottom figure uses <a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_kWinding_FillType'>kWinding_FillType</a> and <a href='undocumented#SkClipOp'>SkClipOp</a>::<a href='#SkClipOp_kIntersect'>kIntersect</a>;
|
|
area inside clip is intersected with <a href='undocumented#Circle'>circle</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRect'>clipRect</a> <a href='#SkCanvas_clipRRect'>clipRRect</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipPath_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipPath'>clipPath</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>, <a href='undocumented#SkClipOp'>SkClipOp</a> op)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection or difference of clip and <a href='#SkCanvas_clipPath_2_path'>path</a>.
|
|
Resulting clip is <a href='undocumented#Alias'>aliased</a>; pixels are fully contained by the clip.
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_FillType'>FillType</a> determines if <a href='#SkCanvas_clipPath_2_path'>path</a>
|
|
describes the area inside or outside its <a href='SkPath_Overview#Contour'>contours</a>; and if <a href='SkPath_Overview#Contour'>path contour</a> overlaps
|
|
itself or another <a href='SkPath_Overview#Contour'>path contour</a>, whether the overlaps form part of the area.
|
|
<a href='#SkCanvas_clipPath_2_path'>path</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>
|
|
before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipPath_2_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#SkPath'>SkPath</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipPath_2_op'><code><strong>op</strong></code></a></td>
|
|
<td><a href='undocumented#SkClipOp'>SkClipOp</a> to apply to clip</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipPath_2"><div>Overlapping <a href='SkRect_Reference#Rect'>Rects</a> form a clip. When clip <a href='#Path_Fill_Type'>Path_Fill_Type</a> is set to
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_kWinding_FillType'>kWinding_FillType</a>, the overlap is included. Set to
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_kEvenOdd_FillType'>kEvenOdd_FillType</a>, the overlap is excluded and forms a hole.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRect'>clipRect</a> <a href='#SkCanvas_clipRRect'>clipRRect</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipPath_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipPath'>clipPath</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>, bool doAntiAlias = false)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection of clip and <a href='#SkCanvas_clipPath_3_path'>path</a>.
|
|
Resulting clip is <a href='undocumented#Alias'>aliased</a>; pixels are fully contained by the clip.
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_FillType'>FillType</a> determines if <a href='#SkCanvas_clipPath_3_path'>path</a>
|
|
describes the area inside or outside its <a href='SkPath_Overview#Contour'>contours</a>; and if <a href='SkPath_Overview#Contour'>path contour</a> overlaps
|
|
itself or another <a href='SkPath_Overview#Contour'>path contour</a>, whether the overlaps form part of the area.
|
|
<a href='#SkCanvas_clipPath_3_path'>path</a> is transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> before it is combined with clip.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipPath_3_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#SkPath'>SkPath</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipPath_3_doAntiAlias'><code><strong>doAntiAlias</strong></code></a></td>
|
|
<td>true if clip is to be <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipPath_3"><div>Clip loops over itself covering its center twice. When clip <a href='#Path_Fill_Type'>Path_Fill_Type</a>
|
|
is set to <a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_kWinding_FillType'>kWinding_FillType</a>, the overlap is included. Set to
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_kEvenOdd_FillType'>kEvenOdd_FillType</a>, the overlap is excluded and forms a hole.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRect'>clipRect</a> <a href='#SkCanvas_clipRRect'>clipRRect</a> <a href='#SkCanvas_clipRegion'>clipRegion</a>
|
|
|
|
<a name='SkCanvas_clipRegion'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_clipRegion'>clipRegion</a>(const <a href='SkRegion_Reference#SkRegion'>SkRegion</a>& deviceRgn, <a href='undocumented#SkClipOp'>SkClipOp</a> op = <a href='undocumented#SkClipOp'>SkClipOp</a>::<a href='#SkClipOp_kIntersect'>kIntersect</a>)
|
|
</pre>
|
|
|
|
Replaces clip with the intersection or difference of clip and <a href='SkRegion_Reference#SkRegion'>SkRegion</a> <a href='#SkCanvas_clipRegion_deviceRgn'>deviceRgn</a>.
|
|
Resulting clip is <a href='undocumented#Alias'>aliased</a>; pixels are fully contained by the clip.
|
|
<a href='#SkCanvas_clipRegion_deviceRgn'>deviceRgn</a> is unaffected by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clipRegion_deviceRgn'><code><strong>deviceRgn</strong></code></a></td>
|
|
<td><a href='SkRegion_Reference#SkRegion'>SkRegion</a> to combine with clip</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_clipRegion_op'><code><strong>op</strong></code></a></td>
|
|
<td><a href='undocumented#SkClipOp'>SkClipOp</a> to apply to clip</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clipRegion"><div><a href='SkRegion_Reference#Region'>region</a> is unaffected by <a href='SkCanvas_Reference#Canvas'>canvas</a> rotation; iRect is affected by <a href='SkCanvas_Reference#Canvas'>canvas</a> rotation.
|
|
Both clips are <a href='undocumented#Alias'>Aliased</a>; this is not noticeable on <a href='SkRegion_Reference#Region'>Region</a> clip because it
|
|
aligns to <a href='undocumented#Pixel'>pixel</a> boundaries.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clipRect'>clipRect</a> <a href='#SkCanvas_clipRRect'>clipRRect</a> <a href='#SkCanvas_clipPath'>clipPath</a>
|
|
|
|
<a name='SkCanvas_quickReject'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_quickReject'>quickReject</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>)const
|
|
</pre>
|
|
|
|
Returns true if <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_quickReject_rect'>rect</a>, transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, can be quickly determined to be
|
|
outside of clip. May return false even though <a href='#SkCanvas_quickReject_rect'>rect</a> is outside of clip.
|
|
|
|
Use to check if an area to be drawn is clipped out, to skip subsequent draw calls.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_quickReject_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> to compare with clip</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#SkCanvas_quickReject_rect'>rect</a>, transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, does not intersect clip
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_quickReject">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
quickReject true
|
|
quickReject false
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a> <a href='#SkCanvas_getTotalMatrix'>getTotalMatrix</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_drawsNothing'>drawsNothing</a>
|
|
|
|
<a name='SkCanvas_quickReject_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_quickReject'>quickReject</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>)const
|
|
</pre>
|
|
|
|
Returns true if <a href='#SkCanvas_quickReject_2_path'>path</a>, transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, can be quickly determined to be
|
|
outside of clip. May return false even though <a href='#SkCanvas_quickReject_2_path'>path</a> is outside of clip.
|
|
|
|
Use to check if an area to be drawn is clipped out, to skip subsequent draw calls.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_quickReject_2_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#SkPath'>SkPath</a> to compare with clip</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if <a href='#SkCanvas_quickReject_2_path'>path</a>, transformed by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, does not intersect clip
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_quickReject_2">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
quickReject true
|
|
quickReject false
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a> <a href='#SkCanvas_getTotalMatrix'>getTotalMatrix</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_drawsNothing'>drawsNothing</a>
|
|
|
|
<a name='SkCanvas_getLocalClipBounds'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a>()const
|
|
</pre>
|
|
|
|
Returns bounds of clip, transformed by inverse of <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>. If clip is empty,
|
|
return <a href='SkRect_Reference#SkRect'>SkRect</a>::<a href='#SkRect_MakeEmpty'>MakeEmpty</a>, where all <a href='SkRect_Reference#SkRect'>SkRect</a> sides equal zero.
|
|
|
|
<a href='SkRect_Reference#SkRect'>SkRect</a> returned is outset by one to account for partial <a href='undocumented#Pixel'>pixel</a> coverage if clip
|
|
is <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a>.
|
|
|
|
### Return Value
|
|
|
|
bounds of clip in local coordinates
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getLocalClipBounds"><div>Initial bounds is <a href='undocumented#Device'>device</a> bounds outset by 1 on all sides.
|
|
Clipped bounds is <a href='#SkCanvas_clipPath'>clipPath</a> bounds outset by 1 on all sides.
|
|
Scaling the <a href='SkCanvas_Reference#Canvas'>canvas</a> by two on both axes scales the local bounds by 1/2
|
|
on both axes.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
left:-1 top:-1 right:257 bottom:257
|
|
left:29 top:129 right:121 bottom:231
|
|
left:14.5 top:64.5 right:60.5 bottom:115.5
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a> <a href='#SkCanvas_getBaseLayerSize'>getBaseLayerSize</a> <a href='#SkCanvas_quickReject'>quickReject</a>
|
|
|
|
<a name='SkCanvas_getLocalClipBounds_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a>(<a href='SkRect_Reference#SkRect'>SkRect</a>* bounds)const
|
|
</pre>
|
|
|
|
Returns <a href='#SkCanvas_getLocalClipBounds_2_bounds'>bounds</a> of clip, transformed by inverse of <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>. If clip is empty,
|
|
return false, and set <a href='#SkCanvas_getLocalClipBounds_2_bounds'>bounds</a> to <a href='SkRect_Reference#SkRect'>SkRect</a>::<a href='#SkRect_MakeEmpty'>MakeEmpty</a>, where all <a href='SkRect_Reference#SkRect'>SkRect</a> sides equal zero.
|
|
|
|
<a href='#SkCanvas_getLocalClipBounds_2_bounds'>bounds</a> is outset by one to account for partial <a href='undocumented#Pixel'>pixel</a> coverage if clip
|
|
is <a href='SkPaint_Reference#Anti_Alias'>anti-aliased</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_getLocalClipBounds_2_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> of clip in local coordinates</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if clip <a href='#SkCanvas_getLocalClipBounds_2_bounds'>bounds</a> is not empty
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getLocalClipBounds_2">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
local bounds empty = false
|
|
local bounds empty = true
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a> <a href='#SkCanvas_getBaseLayerSize'>getBaseLayerSize</a> <a href='#SkCanvas_quickReject'>quickReject</a>
|
|
|
|
<a name='SkCanvas_getDeviceClipBounds'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
<a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a>()const
|
|
</pre>
|
|
|
|
Returns <a href='SkIRect_Reference#SkIRect'>SkIRect</a> bounds of clip, unaffected by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>. If clip is empty,
|
|
return <a href='SkRect_Reference#SkRect'>SkRect</a>::<a href='#SkRect_MakeEmpty'>MakeEmpty</a>, where all <a href='SkRect_Reference#SkRect'>SkRect</a> sides equal zero.
|
|
|
|
Unlike <a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a>(), returned <a href='SkIRect_Reference#SkIRect'>SkIRect</a> is not outset.
|
|
|
|
### Return Value
|
|
|
|
bounds of clip in <a href='undocumented#SkBaseDevice'>SkBaseDevice</a> coordinates
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getDeviceClipBounds"><div>Initial bounds is <a href='undocumented#Device'>device</a> bounds, not outset.
|
|
Clipped bounds is <a href='#SkCanvas_clipPath'>clipPath</a> bounds, not outset.
|
|
Scaling the <a href='SkCanvas_Reference#Canvas'>canvas</a> by 1/2 on both axes scales the <a href='undocumented#Device'>device</a> bounds by 1/2
|
|
on both axes.
|
|
</div>
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
left:0 top:0 right:256 bottom:256
|
|
left:30 top:130 right:120 bottom:230
|
|
left:15 top:65 right:60 bottom:115
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a> <a href='#SkCanvas_getBaseLayerSize'>getBaseLayerSize</a> <a href='#SkCanvas_quickReject'>quickReject</a>
|
|
|
|
<a name='SkCanvas_getDeviceClipBounds_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
bool <a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a>(<a href='SkIRect_Reference#SkIRect'>SkIRect</a>* bounds)const
|
|
</pre>
|
|
|
|
Returns <a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkCanvas_getDeviceClipBounds_2_bounds'>bounds</a> of clip, unaffected by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>. If clip is empty,
|
|
return false, and set <a href='#SkCanvas_getDeviceClipBounds_2_bounds'>bounds</a> to <a href='SkRect_Reference#SkRect'>SkRect</a>::<a href='#SkRect_MakeEmpty'>MakeEmpty</a>, where all <a href='SkRect_Reference#SkRect'>SkRect</a> sides equal zero.
|
|
|
|
Unlike <a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a>(), <a href='#SkCanvas_getDeviceClipBounds_2_bounds'>bounds</a> is not outset.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_getDeviceClipBounds_2_bounds'><code><strong>bounds</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> of clip in <a href='undocumented#Device'>device</a> coordinates</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Return Value
|
|
|
|
true if clip <a href='#SkCanvas_getDeviceClipBounds_2_bounds'>bounds</a> is not empty
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_getDeviceClipBounds_2">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
device bounds empty = false
|
|
device bounds empty = true
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a> <a href='#SkCanvas_getBaseLayerSize'>getBaseLayerSize</a> <a href='#SkCanvas_quickReject'>quickReject</a>
|
|
|
|
<a name='Draw'></a>
|
|
|
|
<a name='SkCanvas_drawColor'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawColor'>drawColor</a>(<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='SkColor_Reference#Color'>color</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode = <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>::<a href='#SkBlendMode_kSrcOver'>kSrcOver</a>)
|
|
</pre>
|
|
|
|
Fills clip with <a href='#SkCanvas_drawColor_color'>color color</a>.
|
|
<a href='#SkCanvas_drawColor_mode'>mode</a> determines how ARGB is combined with destination.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawColor_color'><code><strong>color</strong></code></a></td>
|
|
<td><a href='undocumented#Unpremultiply'>unpremultiplied</a> ARGB</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawColor_mode'><code><strong>mode</strong></code></a></td>
|
|
<td><a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> used to combine source <a href='#SkCanvas_drawColor_color'>color</a> and destination</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawColor"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clear'>clear</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_erase'>erase</a> <a href='#SkCanvas_drawPaint'>drawPaint</a>
|
|
|
|
<a name='SkCanvas_clear'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void clear(<a href='SkColor_Reference#SkColor'>SkColor</a> <a href='SkColor_Reference#Color'>color</a>)
|
|
</pre>
|
|
|
|
Fills clip with <a href='#SkCanvas_clear_color'>color color</a> using <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>::<a href='#SkBlendMode_kSrc'>kSrc</a>.
|
|
This has the effect of replacing all pixels contained by clip with <a href='#SkCanvas_clear_color'>color</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_clear_color'><code><strong>color</strong></code></a></td>
|
|
<td><a href='undocumented#Unpremultiply'>unpremultiplied</a> ARGB</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_clear"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawColor'>drawColor</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_erase'>erase</a> <a href='#SkCanvas_drawPaint'>drawPaint</a>
|
|
|
|
<a name='SkCanvas_discard'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_discard'>discard()</a>
|
|
</pre>
|
|
|
|
Makes <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> contents undefined. Subsequent calls that read <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> pixels,
|
|
such as drawing with <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, return undefined results. <a href='#SkCanvas_discard'>discard()</a> does
|
|
not change clip or <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
|
|
<a href='#SkCanvas_discard'>discard()</a> may do nothing, depending on the implementation of <a href='SkSurface_Reference#SkSurface'>SkSurface</a> or <a href='undocumented#SkBaseDevice'>SkBaseDevice</a>
|
|
that created <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>.
|
|
|
|
<a href='#SkCanvas_discard'>discard()</a> allows optimized performance on subsequent draws by removing
|
|
cached <a href='undocumented#Data'>data</a> associated with <a href='SkSurface_Reference#SkSurface'>SkSurface</a> or <a href='undocumented#SkBaseDevice'>SkBaseDevice</a>.
|
|
It is not necessary to call <a href='#SkCanvas_discard'>discard()</a> once done with <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a>;
|
|
any cached <a href='undocumented#Data'>data</a> is deleted when owning <a href='SkSurface_Reference#SkSurface'>SkSurface</a> or <a href='undocumented#SkBaseDevice'>SkBaseDevice</a> is deleted.
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_flush'>flush()</a> <a href='undocumented#GrContext'>GrContext</a>::<a href='#GrContext_abandonContext'>abandonContext</a>
|
|
|
|
<a name='SkCanvas_drawPaint'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPaint'>drawPaint</a>(const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Fills clip with <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPaint_paint'>paint</a>. <a href='SkPaint_Reference#SkPaint'>SkPaint</a> components <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, <a href='undocumented#SkShader'>SkShader</a>,
|
|
<a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> affect drawing;
|
|
<a href='undocumented#SkPathEffect'>SkPathEffect</a> in <a href='#SkCanvas_drawPaint_paint'>paint</a> is ignored.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPaint_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>graphics state used to fill <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a></td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPaint"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_clear'>clear</a> <a href='#SkCanvas_drawColor'>drawColor</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_erase'>erase</a>
|
|
|
|
<a name='SkCanvas_PointMode'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkCanvas_PointMode'>PointMode</a> {
|
|
<a href='#SkCanvas_kPoints_PointMode'>kPoints_PointMode</a>,
|
|
<a href='#SkCanvas_kLines_PointMode'>kLines_PointMode</a>,
|
|
<a href='#SkCanvas_kPolygon_PointMode'>kPolygon_PointMode</a>,
|
|
};
|
|
|
|
</pre>
|
|
|
|
Selects if an array of <a href='SkPoint_Reference#Point'>points</a> are drawn as discrete <a href='SkPoint_Reference#Point'>points</a>, as <a href='undocumented#Line'>lines</a>, or as
|
|
an open polygon.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_kPoints_PointMode'><code>SkCanvas::kPoints_PointMode</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>0</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
draw each point separately</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_kLines_PointMode'><code>SkCanvas::kLines_PointMode</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
draw each pair of points as a line segment</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_kPolygon_PointMode'><code>SkCanvas::kPolygon_PointMode</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>2</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
draw the array of points as a open polygon</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_PointMode"><div>The upper left corner shows three squares when drawn as <a href='SkPoint_Reference#Point'>points</a>.
|
|
The upper right corner shows one <a href='undocumented#Line'>line</a>; when drawn as <a href='undocumented#Line'>lines</a>, two <a href='SkPoint_Reference#Point'>points</a> are required per <a href='undocumented#Line'>line</a>.
|
|
The lower right corner shows two <a href='undocumented#Line'>lines</a>; when draw as polygon, no miter is drawn at the corner.
|
|
The lower left corner shows two <a href='undocumented#Line'>lines</a> with a miter when <a href='SkPath_Reference#Path'>path</a> contains polygon.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawLine'>drawLine</a> <a href='#SkCanvas_drawPoint'>drawPoint</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawPoints'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPoints'>drawPoints</a>(<a href='#SkCanvas_PointMode'>PointMode</a> mode, size_t count, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> pts[], const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='#SkCanvas_drawPoints_pts'>pts</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPoints_paint'>paint</a>.
|
|
<a href='#SkCanvas_drawPoints_count'>count</a> is the number of <a href='SkPoint_Reference#Point'>points</a>; if <a href='#SkCanvas_drawPoints_count'>count</a> is less than one, has no effect.
|
|
<a href='#SkCanvas_drawPoints_mode'>mode</a> may be one of: <a href='#SkCanvas_kPoints_PointMode'>kPoints_PointMode</a>, <a href='#SkCanvas_kLines_PointMode'>kLines_PointMode</a>, or <a href='#SkCanvas_kPolygon_PointMode'>kPolygon_PointMode</a>.
|
|
|
|
If <a href='#SkCanvas_drawPoints_mode'>mode</a> is <a href='#SkCanvas_kPoints_PointMode'>kPoints_PointMode</a>, the shape of <a href='SkPoint_Reference#Point'>point</a> drawn depends on <a href='#SkCanvas_drawPoints_paint'>paint</a>
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Cap'>Cap</a>. If <a href='#SkCanvas_drawPoints_paint'>paint</a> is set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kRound_Cap'>kRound_Cap</a>, each <a href='SkPoint_Reference#Point'>point</a> draws a
|
|
<a href='undocumented#Circle'>circle</a> of diameter <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width. If <a href='#SkCanvas_drawPoints_paint'>paint</a> is set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kSquare_Cap'>kSquare_Cap</a>
|
|
or <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kButt_Cap'>kButt_Cap</a>, each <a href='SkPoint_Reference#Point'>point</a> draws a square of width and height
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width.
|
|
|
|
If <a href='#SkCanvas_drawPoints_mode'>mode</a> is <a href='#SkCanvas_kLines_PointMode'>kLines_PointMode</a>, each pair of <a href='SkPoint_Reference#Point'>points</a> draws a <a href='undocumented#Line'>line</a> segment.
|
|
One <a href='undocumented#Line'>line</a> is drawn for every two <a href='SkPoint_Reference#Point'>points</a>; each <a href='SkPoint_Reference#Point'>point</a> is used once. If <a href='#SkCanvas_drawPoints_count'>count</a> is odd,
|
|
the final <a href='SkPoint_Reference#Point'>point</a> is ignored.
|
|
|
|
If <a href='#SkCanvas_drawPoints_mode'>mode</a> is <a href='#SkCanvas_kPolygon_PointMode'>kPolygon_PointMode</a>, each adjacent pair of <a href='SkPoint_Reference#Point'>points</a> draws a <a href='undocumented#Line'>line</a> segment.
|
|
<a href='#SkCanvas_drawPoints_count'>count</a> minus one <a href='undocumented#Line'>lines</a> are drawn; the first and last <a href='SkPoint_Reference#Point'>point</a> are used once.
|
|
|
|
Each <a href='undocumented#Line'>line</a> segment respects <a href='#SkCanvas_drawPoints_paint'>paint</a> <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Cap'>Cap</a> and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width.
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> is ignored, as if were set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kStroke_Style'>kStroke_Style</a>.
|
|
|
|
Always draws each element one at a time; is not affected by
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Join'>Join</a>, and unlike <a href='#SkCanvas_drawPath'>drawPath</a>(), does not create a mask from all <a href='SkPoint_Reference#Point'>points</a>
|
|
and <a href='undocumented#Line'>lines</a> before drawing.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPoints_mode'><code><strong>mode</strong></code></a></td>
|
|
<td>whether <a href='#SkCanvas_drawPoints_pts'>pts</a> draws <a href='SkPoint_Reference#Point'>points</a> or <a href='undocumented#Line'>lines</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPoints_count'><code><strong>count</strong></code></a></td>
|
|
<td>number of <a href='SkPoint_Reference#Point'>points</a> in the array</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPoints_pts'><code><strong>pts</strong></code></a></td>
|
|
<td>array of <a href='SkPoint_Reference#Point'>points</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPoints_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPoints"><div>
|
|
|
|
<table> <tr>
|
|
<td>The first column draws <a href='SkPoint_Reference#Point'>points</a>.</td>
|
|
</tr> <tr>
|
|
<td>The second column draws <a href='SkPoint_Reference#Point'>points</a> as <a href='undocumented#Line'>lines</a>.</td>
|
|
</tr> <tr>
|
|
<td>The third column draws <a href='SkPoint_Reference#Point'>points</a> as a polygon.</td>
|
|
</tr> <tr>
|
|
<td>The fourth column draws <a href='SkPoint_Reference#Point'>points</a> as a polygonal <a href='SkPath_Reference#Path'>path</a>.</td>
|
|
</tr> <tr>
|
|
<td>The first row uses a round cap and round join.</td>
|
|
</tr> <tr>
|
|
<td>The second row uses a square cap and a miter join.</td>
|
|
</tr> <tr>
|
|
<td>The third row uses a butt cap and a bevel join.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
The transparent <a href='SkColor_Reference#Color'>color</a> makes multiple <a href='undocumented#Line'>line</a> draws visible;
|
|
the <a href='SkPath_Reference#Path'>path</a> is drawn all at once.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawLine'>drawLine</a> <a href='#SkCanvas_drawPoint'>drawPoint</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawPoint'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPoint'>drawPoint</a>(<a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkPoint_Reference#Point'>point</a> at (<a href='#SkCanvas_drawPoint_x'>x</a>, <a href='#SkCanvas_drawPoint_y'>y</a>) using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPoint_paint'>paint</a>.
|
|
|
|
The shape of <a href='SkPoint_Reference#Point'>point</a> drawn depends on <a href='#SkCanvas_drawPoint_paint'>paint</a> <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Cap'>Cap</a>.
|
|
If <a href='#SkCanvas_drawPoint_paint'>paint</a> is set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kRound_Cap'>kRound_Cap</a>, draw a <a href='undocumented#Circle'>circle</a> of diameter
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width. If <a href='#SkCanvas_drawPoint_paint'>paint</a> is set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kSquare_Cap'>kSquare_Cap</a> or <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kButt_Cap'>kButt_Cap</a>,
|
|
draw a square of width and height <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width.
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> is ignored, as if were set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kStroke_Style'>kStroke_Style</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPoint_x'><code><strong>x</strong></code></a></td>
|
|
<td>left edge of <a href='undocumented#Circle'>circle</a> or square</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPoint_y'><code><strong>y</strong></code></a></td>
|
|
<td>top edge of <a href='undocumented#Circle'>circle</a> or square</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPoint_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPoint"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawPoints'>drawPoints</a> <a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawLine'>drawLine</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawPoint_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPoint'>drawPoint</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> p, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkPoint_Reference#Point'>point</a> <a href='#SkCanvas_drawPoint_2_p'>p</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPoint_2_paint'>paint</a>.
|
|
|
|
The shape of <a href='SkPoint_Reference#Point'>point</a> drawn depends on <a href='#SkCanvas_drawPoint_2_paint'>paint</a> <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Cap'>Cap</a>.
|
|
If <a href='#SkCanvas_drawPoint_2_paint'>paint</a> is set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kRound_Cap'>kRound_Cap</a>, draw a <a href='undocumented#Circle'>circle</a> of diameter
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width. If <a href='#SkCanvas_drawPoint_2_paint'>paint</a> is set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kSquare_Cap'>kSquare_Cap</a> or <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kButt_Cap'>kButt_Cap</a>,
|
|
draw a square of width and height <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width.
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> is ignored, as if were set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kStroke_Style'>kStroke_Style</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPoint_2_p'><code><strong>p</strong></code></a></td>
|
|
<td>top-left edge of <a href='undocumented#Circle'>circle</a> or square</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPoint_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPoint_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawPoints'>drawPoints</a> <a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawLine'>drawLine</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawLine'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawLine'>drawLine</a>(<a href='undocumented#SkScalar'>SkScalar</a> x0, <a href='undocumented#SkScalar'>SkScalar</a> y0, <a href='undocumented#SkScalar'>SkScalar</a> x1, <a href='undocumented#SkScalar'>SkScalar</a> y1, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#Line'>line</a> segment from (<a href='#SkCanvas_drawLine_x0'>x0</a>, <a href='#SkCanvas_drawLine_y0'>y0</a>) to (<a href='#SkCanvas_drawLine_x1'>x1</a>, <a href='#SkCanvas_drawLine_y1'>y1</a>) using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawLine_paint'>paint</a>.
|
|
In <a href='#SkCanvas_drawLine_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness;
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Cap'>Cap</a> draws the end rounded or square;
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> is ignored, as if were set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kStroke_Style'>kStroke_Style</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawLine_x0'><code><strong>x0</strong></code></a></td>
|
|
<td>start of <a href='undocumented#Line'>line</a> segment on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawLine_y0'><code><strong>y0</strong></code></a></td>
|
|
<td>start of <a href='undocumented#Line'>line</a> segment on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawLine_x1'><code><strong>x1</strong></code></a></td>
|
|
<td>end of <a href='undocumented#Line'>line</a> segment on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawLine_y1'><code><strong>y1</strong></code></a></td>
|
|
<td>end of <a href='undocumented#Line'>line</a> segment on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawLine_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawLine"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawPoint'>drawPoint</a> <a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawLine_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawLine'>drawLine</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> p0, <a href='SkPoint_Reference#SkPoint'>SkPoint</a> p1, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#Line'>line</a> segment from <a href='#SkCanvas_drawLine_2_p0'>p0</a> to <a href='#SkCanvas_drawLine_2_p1'>p1</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawLine_2_paint'>paint</a>.
|
|
In <a href='#SkCanvas_drawLine_2_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness;
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Cap'>Cap</a> draws the end rounded or square;
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> is ignored, as if were set to <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kStroke_Style'>kStroke_Style</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawLine_2_p0'><code><strong>p0</strong></code></a></td>
|
|
<td>start of <a href='undocumented#Line'>line</a> segment</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawLine_2_p1'><code><strong>p1</strong></code></a></td>
|
|
<td>end of <a href='undocumented#Line'>line</a> segment</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawLine_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawLine_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawPoint'>drawPoint</a> <a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawRect'>drawRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawRect_rect'>rect</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawRect_paint'>paint</a>.
|
|
In <a href='#SkCanvas_drawRect_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if rectangle is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness, and
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Join'>Join</a> draws the corners rounded or square.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawRect_rect'><code><strong>rect</strong></code></a></td>
|
|
<td>rectangle to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawRect_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawRect"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawIRect'>drawIRect</a> <a href='#SkCanvas_drawRRect'>drawRRect</a> <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a> <a href='#SkCanvas_drawRegion'>drawRegion</a> <a href='#SkCanvas_drawPath'>drawPath</a> <a href='#SkCanvas_drawLine'>drawLine</a>
|
|
|
|
<a name='SkCanvas_drawIRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawIRect'>drawIRect</a>(const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkCanvas_drawIRect_rect'>rect</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawIRect_paint'>paint</a>.
|
|
In <a href='#SkCanvas_drawIRect_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if rectangle is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness, and
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Join'>Join</a> draws the corners rounded or square.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawIRect_rect'><code><strong>rect</strong></code></a></td>
|
|
<td>rectangle to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawIRect_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawIRect"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawRRect'>drawRRect</a> <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a> <a href='#SkCanvas_drawRegion'>drawRegion</a> <a href='#SkCanvas_drawPath'>drawPath</a> <a href='#SkCanvas_drawLine'>drawLine</a>
|
|
|
|
<a name='SkCanvas_drawRegion'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawRegion'>drawRegion</a>(const <a href='SkRegion_Reference#SkRegion'>SkRegion</a>& <a href='SkRegion_Reference#Region'>region</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkRegion_Reference#SkRegion'>SkRegion</a> <a href='#SkCanvas_drawRegion_region'>region</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawRegion_paint'>paint</a>.
|
|
In <a href='#SkCanvas_drawRegion_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if rectangle is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness, and
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Join'>Join</a> draws the corners rounded or square.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawRegion_region'><code><strong>region</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawRegion_region'>region</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawRegion_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawRegion"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawIRect'>drawIRect</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawOval'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawOval'>drawOval</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='undocumented#Oval'>oval</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='#SkCanvas_drawOval_oval'>oval</a> <a href='#SkCanvas_drawOval_oval'>oval</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a>.
|
|
In <a href='#SkCanvas_drawOval_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if <a href='#SkCanvas_drawOval_oval'>oval</a> is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawOval_oval'><code><strong>oval</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> bounds of <a href='#SkCanvas_drawOval_oval'>oval</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawOval_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawOval"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawPoint'>drawPoint</a> <a href='#SkCanvas_drawPath'>drawPath</a> <a href='#SkCanvas_drawRRect'>drawRRect</a> <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a>
|
|
|
|
<a name='SkCanvas_drawRRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawRRect'>drawRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& rrect, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkRRect_Reference#SkRRect'>SkRRect</a> <a href='#SkCanvas_drawRRect_rrect'>rrect</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawRRect_paint'>paint</a>.
|
|
In <a href='#SkCanvas_drawRRect_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if <a href='#SkCanvas_drawRRect_rrect'>rrect</a> is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness.
|
|
|
|
<a href='#SkCanvas_drawRRect_rrect'>rrect</a> may represent a rectangle, <a href='undocumented#Circle'>circle</a>, <a href='undocumented#Oval'>oval</a>, uniformly rounded rectangle, or
|
|
may have any combination of positive non-square radii for the four corners.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawRRect_rrect'><code><strong>rrect</strong></code></a></td>
|
|
<td><a href='SkRRect_Reference#SkRRect'>SkRRect</a> with up to eight corner radii to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawRRect_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawRRect"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a> <a href='#SkCanvas_drawDRRect'>drawDRRect</a> <a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawOval'>drawOval</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawDRRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawDRRect'>drawDRRect</a>(const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& outer, const <a href='SkRRect_Reference#SkRRect'>SkRRect</a>& inner, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkRRect_Reference#SkRRect'>SkRRect</a> <a href='#SkCanvas_drawDRRect_outer'>outer</a> and <a href='#SkCanvas_drawDRRect_inner'>inner</a>
|
|
using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawDRRect_paint'>paint</a>.
|
|
<a href='#SkCanvas_drawDRRect_outer'>outer</a> must contain <a href='#SkCanvas_drawDRRect_inner'>inner</a> or the drawing is undefined.
|
|
In <a href='#SkCanvas_drawDRRect_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if <a href='SkRRect_Reference#SkRRect'>SkRRect</a> is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness.
|
|
If stroked and <a href='SkRRect_Reference#SkRRect'>SkRRect</a> corner has zero length radii, <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Join'>Join</a> can
|
|
draw corners rounded or square.
|
|
|
|
GPU-backed platforms optimize drawing when both <a href='#SkCanvas_drawDRRect_outer'>outer</a> and <a href='#SkCanvas_drawDRRect_inner'>inner</a> are
|
|
concave and <a href='#SkCanvas_drawDRRect_outer'>outer</a> contains <a href='#SkCanvas_drawDRRect_inner'>inner</a>. These platforms may not be able to draw
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a> built with identical <a href='undocumented#Data'>data</a> as fast.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawDRRect_outer'><code><strong>outer</strong></code></a></td>
|
|
<td><a href='SkRRect_Reference#SkRRect'>SkRRect</a> <a href='#SkCanvas_drawDRRect_outer'>outer</a> bounds to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawDRRect_inner'><code><strong>inner</strong></code></a></td>
|
|
<td><a href='SkRRect_Reference#SkRRect'>SkRRect</a> <a href='#SkCanvas_drawDRRect_inner'>inner</a> bounds to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawDRRect_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawDRRect_a"></fiddle-embed></div>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawDRRect_b"><div>Outer <a href='SkRect_Reference#Rect'>Rect</a> has no corner radii, but stroke join is rounded.
|
|
Inner <a href='#RRect'>Round_Rect</a> has corner radii; outset stroke increases radii of corners.
|
|
Stroke join does not affect <a href='#SkCanvas_drawDRRect_inner'>inner</a> <a href='#RRect'>Round_Rect</a> since it has no sharp corners.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a> <a href='#SkCanvas_drawRRect'>drawRRect</a> <a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawOval'>drawOval</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawCircle'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawCircle'>drawCircle</a>(<a href='undocumented#SkScalar'>SkScalar</a> cx, <a href='undocumented#SkScalar'>SkScalar</a> cy, <a href='undocumented#SkScalar'>SkScalar</a> radius, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#Circle'>circle</a> at (<a href='#SkCanvas_drawCircle_cx'>cx</a>, <a href='#SkCanvas_drawCircle_cy'>cy</a>) with <a href='#SkCanvas_drawCircle_radius'>radius</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawCircle_paint'>paint</a>.
|
|
If <a href='#SkCanvas_drawCircle_radius'>radius</a> is zero or less, nothing is drawn.
|
|
In <a href='#SkCanvas_drawCircle_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if <a href='undocumented#Circle'>circle</a> is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawCircle_cx'><code><strong>cx</strong></code></a></td>
|
|
<td><a href='undocumented#Circle'>circle</a> center on the x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawCircle_cy'><code><strong>cy</strong></code></a></td>
|
|
<td><a href='undocumented#Circle'>circle</a> center on the y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawCircle_radius'><code><strong>radius</strong></code></a></td>
|
|
<td>half the diameter of <a href='undocumented#Circle'>circle</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawCircle_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawCircle"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawOval'>drawOval</a> <a href='#SkCanvas_drawRRect'>drawRRect</a> <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a> <a href='#SkCanvas_drawPath'>drawPath</a> <a href='#SkCanvas_drawArc'>drawArc</a> <a href='#SkCanvas_drawPoint'>drawPoint</a> <a href='#SkCanvas_drawLine'>drawLine</a>
|
|
|
|
<a name='SkCanvas_drawCircle_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawCircle'>drawCircle</a>(<a href='SkPoint_Reference#SkPoint'>SkPoint</a> center, <a href='undocumented#SkScalar'>SkScalar</a> radius, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#Circle'>circle</a> at <a href='#SkCanvas_drawCircle_2_center'>center</a> with <a href='#SkCanvas_drawCircle_2_radius'>radius</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawCircle_2_paint'>paint</a>.
|
|
If <a href='#SkCanvas_drawCircle_2_radius'>radius</a> is zero or less, nothing is drawn.
|
|
In <a href='#SkCanvas_drawCircle_2_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if <a href='undocumented#Circle'>circle</a> is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawCircle_2_center'><code><strong>center</strong></code></a></td>
|
|
<td><a href='undocumented#Circle'>circle</a> <a href='#SkCanvas_drawCircle_2_center'>center</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawCircle_2_radius'><code><strong>radius</strong></code></a></td>
|
|
<td>half the diameter of <a href='undocumented#Circle'>circle</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawCircle_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawCircle_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawOval'>drawOval</a> <a href='#SkCanvas_drawRRect'>drawRRect</a> <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a> <a href='#SkCanvas_drawPath'>drawPath</a> <a href='#SkCanvas_drawArc'>drawArc</a> <a href='#SkCanvas_drawPoint'>drawPoint</a> <a href='#SkCanvas_drawLine'>drawLine</a>
|
|
|
|
<a name='SkCanvas_drawArc'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawArc'>drawArc</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='undocumented#Oval'>oval</a>, <a href='undocumented#SkScalar'>SkScalar</a> startAngle, <a href='undocumented#SkScalar'>SkScalar</a> sweepAngle, bool useCenter,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#Arc'>arc</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawArc_paint'>paint</a>.
|
|
|
|
<a href='undocumented#Arc'>Arc</a> is part of <a href='#SkCanvas_drawArc_oval'>oval</a> bounded by <a href='#SkCanvas_drawArc_oval'>oval</a>, sweeping from <a href='#SkCanvas_drawArc_startAngle'>startAngle</a> to <a href='#SkCanvas_drawArc_startAngle'>startAngle</a> plus
|
|
<a href='#SkCanvas_drawArc_sweepAngle'>sweepAngle</a>. <a href='#SkCanvas_drawArc_startAngle'>startAngle</a> and <a href='#SkCanvas_drawArc_sweepAngle'>sweepAngle</a> are in degrees.
|
|
|
|
<a href='#SkCanvas_drawArc_startAngle'>startAngle</a> of zero places start <a href='SkPoint_Reference#Point'>point</a> at the right middle edge of <a href='#SkCanvas_drawArc_oval'>oval</a>.
|
|
A positive <a href='#SkCanvas_drawArc_sweepAngle'>sweepAngle</a> places <a href='undocumented#Arc'>arc</a> end <a href='SkPoint_Reference#Point'>point</a> clockwise from start <a href='SkPoint_Reference#Point'>point</a>;
|
|
a negative <a href='#SkCanvas_drawArc_sweepAngle'>sweepAngle</a> places <a href='undocumented#Arc'>arc</a> end <a href='SkPoint_Reference#Point'>point</a> counterclockwise from start <a href='SkPoint_Reference#Point'>point</a>.
|
|
<a href='#SkCanvas_drawArc_sweepAngle'>sweepAngle</a> may exceed 360 degrees, a full <a href='undocumented#Circle'>circle</a>.
|
|
If <a href='#SkCanvas_drawArc_useCenter'>useCenter</a> is true, draw a wedge that includes <a href='undocumented#Line'>lines</a> from <a href='#SkCanvas_drawArc_oval'>oval</a>
|
|
center to <a href='undocumented#Arc'>arc</a> end <a href='SkPoint_Reference#Point'>points</a>. If <a href='#SkCanvas_drawArc_useCenter'>useCenter</a> is false, draw <a href='undocumented#Arc'>arc</a> between end <a href='SkPoint_Reference#Point'>points</a>.
|
|
|
|
If <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawArc_oval'>oval</a> is empty or <a href='#SkCanvas_drawArc_sweepAngle'>sweepAngle</a> is zero, nothing is drawn.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawArc_oval'><code><strong>oval</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> bounds of <a href='#SkCanvas_drawArc_oval'>oval</a> containing <a href='undocumented#Arc'>arc</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawArc_startAngle'><code><strong>startAngle</strong></code></a></td>
|
|
<td>angle in degrees where <a href='undocumented#Arc'>arc</a> begins</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawArc_sweepAngle'><code><strong>sweepAngle</strong></code></a></td>
|
|
<td>sweep angle in degrees; positive is clockwise</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawArc_useCenter'><code><strong>useCenter</strong></code></a></td>
|
|
<td>if true, include the center of the <a href='#SkCanvas_drawArc_oval'>oval</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawArc_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke or fill, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawArc_a"></fiddle-embed></div>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawArc_b"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_arcTo'>arcTo</a> <a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawOval'>drawOval</a> <a href='#SkCanvas_drawPath'>drawPath</a>
|
|
|
|
<a name='SkCanvas_drawRoundRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawRoundRect'>drawRoundRect</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, <a href='undocumented#SkScalar'>SkScalar</a> rx, <a href='undocumented#SkScalar'>SkScalar</a> ry, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkRRect_Reference#SkRRect'>SkRRect</a> bounded by <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawRoundRect_rect'>rect</a>, with corner radii (<a href='#SkCanvas_drawRoundRect_rx'>rx</a>, <a href='#SkCanvas_drawRoundRect_ry'>ry</a>) using clip,
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawRoundRect_paint'>paint</a>.
|
|
|
|
In <a href='#SkCanvas_drawRoundRect_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if <a href='SkRRect_Reference#SkRRect'>SkRRect</a> is stroked or filled;
|
|
if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness.
|
|
If <a href='#SkCanvas_drawRoundRect_rx'>rx</a> or <a href='#SkCanvas_drawRoundRect_ry'>ry</a> are less than zero, they are treated as if they are zero.
|
|
If <a href='#SkCanvas_drawRoundRect_rx'>rx</a> plus <a href='#SkCanvas_drawRoundRect_ry'>ry</a> exceeds <a href='#SkCanvas_drawRoundRect_rect'>rect</a> width or <a href='#SkCanvas_drawRoundRect_rect'>rect</a> height, radii are scaled down to fit.
|
|
If <a href='#SkCanvas_drawRoundRect_rx'>rx</a> and <a href='#SkCanvas_drawRoundRect_ry'>ry</a> are zero, <a href='SkRRect_Reference#SkRRect'>SkRRect</a> is drawn as <a href='SkRect_Reference#SkRect'>SkRect</a> and if stroked is affected by
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Join'>Join</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawRoundRect_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> bounds of <a href='SkRRect_Reference#SkRRect'>SkRRect</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawRoundRect_rx'><code><strong>rx</strong></code></a></td>
|
|
<td>axis length on x-axis of <a href='undocumented#Oval'>oval</a> describing rounded corners</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawRoundRect_ry'><code><strong>ry</strong></code></a></td>
|
|
<td>axis length on y-axis of <a href='undocumented#Oval'>oval</a> describing rounded corners</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawRoundRect_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawRoundRect"><div>Top row has a zero radius a generates a rectangle.
|
|
Second row radii sum to less than sides.
|
|
Third row radii sum equals sides.
|
|
Fourth row radii sum exceeds sides; radii are scaled to fit.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawRRect'>drawRRect</a> <a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawDRRect'>drawDRRect</a> <a href='#SkCanvas_drawPath'>drawPath</a> <a href='#SkCanvas_drawCircle'>drawCircle</a> <a href='#SkCanvas_drawOval'>drawOval</a> <a href='#SkCanvas_drawPoint'>drawPoint</a>
|
|
|
|
<a name='SkCanvas_drawPath'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPath'>drawPath</a>(const <a href='SkPath_Reference#SkPath'>SkPath</a>& <a href='SkPath_Reference#Path'>path</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkPath_Reference#SkPath'>SkPath</a> <a href='#SkCanvas_drawPath_path'>path</a> using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPath_paint'>paint</a>.
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a> contains an array of <a href='SkPath_Overview#Contour'>path contour</a>, each of which may be open or closed.
|
|
|
|
In <a href='#SkCanvas_drawPath_paint'>paint</a>: <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Style'>Style</a> determines if <a href='SkRRect_Reference#SkRRect'>SkRRect</a> is stroked or filled:
|
|
if filled, <a href='SkPath_Reference#SkPath'>SkPath</a>::<a href='#SkPath_FillType'>FillType</a> determines whether <a href='SkPath_Overview#Contour'>path contour</a> describes inside or
|
|
outside of fill; if stroked, <a href='SkPaint_Reference#SkPaint'>SkPaint</a> stroke width describes the <a href='undocumented#Line'>line</a> thickness,
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Cap'>Cap</a> describes <a href='undocumented#Line'>line</a> ends, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_Join'>Join</a> describes how
|
|
corners are drawn.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPath_path'><code><strong>path</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#SkPath'>SkPath</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPath_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>stroke, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPath"><div>Top rows draw stroked <a href='#SkCanvas_drawPath_path'>path</a> with combinations of joins and caps. The open <a href='SkPath_Overview#Contour'>contour</a>
|
|
is affected by caps; the closed <a href='SkPath_Overview#Contour'>contour</a> is affected by joins.
|
|
Bottom row draws fill the same for open and closed <a href='SkPath_Overview#Contour'>contour</a>.
|
|
First bottom column shows winding fills overlap.
|
|
Second bottom column shows even odd fills exclude overlap.
|
|
Third bottom column shows inverse winding fills area outside both <a href='SkPath_Overview#Contour'>contours</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkPath_Reference#SkPath'>SkPath</a> <a href='#SkCanvas_drawLine'>drawLine</a> <a href='#SkCanvas_drawArc'>drawArc</a> <a href='#SkCanvas_drawRect'>drawRect</a> <a href='#SkCanvas_drawPoints'>drawPoints</a>
|
|
|
|
<a name='Draw_Image'></a>
|
|
|
|
<a href='#SkCanvas_drawImage'>drawImage</a>, <a href='#SkCanvas_drawImageRect'>drawImageRect</a>, and <a href='#SkCanvas_drawImageNine'>drawImageNine</a> can be called with a bare pointer or
|
|
a <a href='undocumented#Smart_Pointer'>smart pointer</a> as a convenience. The pairs of calls are otherwise identical.
|
|
|
|
<a name='SkCanvas_drawImage'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImage'>drawImage</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, <a href='undocumented#SkScalar'>SkScalar</a> left, <a href='undocumented#SkScalar'>SkScalar</a> top, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='SkImage_Reference#SkImage'>SkImage</a> <a href='#SkCanvas_drawImage_image'>image</a>, with its top-left corner at (<a href='#SkCanvas_drawImage_left'>left</a>, <a href='#SkCanvas_drawImage_top'>top</a>),
|
|
using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImage_paint'>paint</a>.
|
|
|
|
If <a href='#SkCanvas_drawImage_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>,
|
|
and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawImage_image'>image</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawImage_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawImage_image'>image</a> bounds. If generated
|
|
mask extends beyond <a href='#SkCanvas_drawImage_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImage_image'>image</a> edge colors, just as <a href='undocumented#SkShader'>SkShader</a>
|
|
made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the
|
|
<a href='#SkCanvas_drawImage_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImage_image'><code><strong>image</strong></code></a></td>
|
|
<td>uncompressed rectangular map of pixels</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImage_left'><code><strong>left</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawImage_left'>left side</a> of <a href='#SkCanvas_drawImage_image'>image</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImage_top'><code><strong>top</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawImage_top'>top</a> side of <a href='#SkCanvas_drawImage_image'>image</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImage_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImage"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a> <a href='#SkCanvas_drawImageRect'>drawImageRect</a> <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_setImageFilter'>setImageFilter</a>
|
|
|
|
<a name='SkCanvas_drawImage_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImage'>drawImage</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, <a href='undocumented#SkScalar'>SkScalar</a> left, <a href='undocumented#SkScalar'>SkScalar</a> top,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='SkImage_Reference#SkImage'>SkImage</a> <a href='#SkCanvas_drawImage_2_image'>image</a>, with its top-left corner at (<a href='#SkCanvas_drawImage_2_left'>left</a>, <a href='#SkCanvas_drawImage_2_top'>top</a>),
|
|
using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImage_2_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImage_2_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawImage_2_image'>image</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawImage_2_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawImage_2_image'>image</a> bounds. If generated
|
|
mask extends beyond <a href='#SkCanvas_drawImage_2_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImage_2_image'>image</a> edge colors, just as <a href='undocumented#SkShader'>SkShader</a>
|
|
made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the
|
|
<a href='#SkCanvas_drawImage_2_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImage_2_image'><code><strong>image</strong></code></a></td>
|
|
<td>uncompressed rectangular map of pixels</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImage_2_left'><code><strong>left</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawImage_2_left'>left side</a> of <a href='#SkCanvas_drawImage_2_image'>image</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImage_2_top'><code><strong>top</strong></code></a></td>
|
|
<td>pop side of <a href='#SkCanvas_drawImage_2_image'>image</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImage_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImage_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a> <a href='#SkCanvas_drawImageRect'>drawImageRect</a> <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_setImageFilter'>setImageFilter</a>
|
|
|
|
<a name='SkCanvas_SrcRectConstraint'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> {
|
|
<a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>,
|
|
<a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a>,
|
|
};
|
|
|
|
</pre>
|
|
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> controls the behavior at the edge of source <a href='SkRect_Reference#Rect'>Rect</a>,
|
|
provided to <a href='#SkCanvas_drawImageRect'>drawImageRect</a>, trading off speed for precision.
|
|
|
|
<a href='#Image_Filter'>Image_Filter</a> in <a href='SkPaint_Reference#Paint'>Paint</a> may sample multiple pixels in the <a href='SkImage_Reference#Image'>image</a>. Source <a href='SkRect_Reference#Rect'>Rect</a>
|
|
restricts the bounds of pixels that may be read. <a href='#Image_Filter'>Image_Filter</a> may slow down if
|
|
it cannot read outside the bounds, when sampling near the edge of source <a href='SkRect_Reference#Rect'>Rect</a>.
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> specifies whether an <a href='#Image_Filter'>Image_Filter</a> is allowed to read pixels
|
|
outside source <a href='SkRect_Reference#Rect'>Rect</a>.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_kStrict_SrcRectConstraint'><code>SkCanvas::kStrict_SrcRectConstraint</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>0</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Requires <a href='#Image_Filter'>Image_Filter</a> to respect source <a href='SkRect_Reference#Rect'>Rect</a>,
|
|
sampling only inside of its bounds, possibly with a performance penalty.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_kFast_SrcRectConstraint'><code>SkCanvas::kFast_SrcRectConstraint</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Permits <a href='#Image_Filter'>Image_Filter</a> to sample outside of source <a href='SkRect_Reference#Rect'>Rect</a>
|
|
by half the width of <a href='#Image_Filter'>Image_Filter</a>, permitting it to run faster but with
|
|
error at the <a href='SkImage_Reference#Image'>image</a> edges.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_SrcRectConstraint"><div>redBorder contains a black and white checkerboard bordered by red.
|
|
redBorder is drawn scaled by 16 on the left.
|
|
The middle and right <a href='SkBitmap_Reference#Bitmap'>bitmaps</a> are filtered checkerboards.
|
|
Drawing the checkerboard with <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a> shows only a blur of black and white.
|
|
Drawing the checkerboard with <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> allows red to bleed in the corners.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImageRect'>drawImageRect</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_setImageFilter'>setImageFilter</a>
|
|
|
|
<a name='SkCanvas_drawImageRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& src, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawImageRect_src'>src</a> of <a href='SkImage_Reference#SkImage'>SkImage</a> <a href='#SkCanvas_drawImageRect_image'>image</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawImageRect_dst'>dst</a>.
|
|
Additionally transform draw using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawImageRect_image'>image</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawImageRect_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawImageRect_image'>image</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawImageRect_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImageRect_image'>image</a> edge colors, just
|
|
as <a href='undocumented#SkShader'>SkShader</a> made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set
|
|
replicates the <a href='#SkCanvas_drawImageRect_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
<a href='#SkCanvas_drawImageRect_constraint'>constraint</a> set to <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a> limits <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> to
|
|
sample within <a href='#SkCanvas_drawImageRect_src'>src</a>; set to <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> allows sampling outside to
|
|
improve performance.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_src'><code><strong>src</strong></code></a></td>
|
|
<td>source <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='#SkCanvas_drawImageRect_image'>image</a> to draw from</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='#SkCanvas_drawImageRect_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_constraint'><code><strong>constraint</strong></code></a></td>
|
|
<td>filter strictly within <a href='#SkCanvas_drawImageRect_src'>src</a> or draw faster</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageRect"><div>The left <a href='SkBitmap_Reference#Bitmap'>bitmap</a> draws with <a href='SkPaint_Reference#Paint'>Paint</a> default <a href='undocumented#kNone_SkFilterQuality'>kNone_SkFilterQuality</a>, and stays within
|
|
its bounds; there is no bleeding with <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a>.
|
|
the middle and right <a href='SkBitmap_Reference#Bitmap'>bitmaps</a> draw with <a href='undocumented#kLow_SkFilterQuality'>kLow_SkFilterQuality</a>; with
|
|
<a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>, the filter remains within the checkerboard, and
|
|
with <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> red bleeds on the edges.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a>
|
|
|
|
<a name='SkCanvas_drawImageRect_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& isrc, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkCanvas_drawImageRect_2_isrc'>isrc</a> of <a href='SkImage_Reference#SkImage'>SkImage</a> <a href='#SkCanvas_drawImageRect_2_image'>image</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawImageRect_2_dst'>dst</a>.
|
|
Note that <a href='#SkCanvas_drawImageRect_2_isrc'>isrc</a> is on integer <a href='undocumented#Pixel'>pixel</a> boundaries; <a href='#SkCanvas_drawImageRect_2_dst'>dst</a> may include fractional
|
|
boundaries. Additionally transform draw using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a>
|
|
<a href='#SkCanvas_drawImageRect_2_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_2_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawImageRect_2_image'>image</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawImageRect_2_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawImageRect_2_image'>image</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawImageRect_2_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImageRect_2_image'>image</a> edge colors, just
|
|
as <a href='undocumented#SkShader'>SkShader</a> made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set
|
|
replicates the <a href='#SkCanvas_drawImageRect_2_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
<a href='#SkCanvas_drawImageRect_2_constraint'>constraint</a> set to <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a> limits <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> to
|
|
sample within <a href='#SkCanvas_drawImageRect_2_isrc'>isrc</a>; set to <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> allows sampling outside to
|
|
improve performance.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_2_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_2_isrc'><code><strong>isrc</strong></code></a></td>
|
|
<td>source <a href='SkIRect_Reference#SkIRect'>SkIRect</a> of <a href='#SkCanvas_drawImageRect_2_image'>image</a> to draw from</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_2_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='#SkCanvas_drawImageRect_2_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_2_constraint'><code><strong>constraint</strong></code></a></td>
|
|
<td>filter strictly within <a href='#SkCanvas_drawImageRect_2_isrc'>isrc</a> or draw faster</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageRect_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a>
|
|
|
|
<a name='SkCanvas_drawImageRect_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkImage_Reference#SkImage'>SkImage</a> <a href='#SkCanvas_drawImageRect_3_image'>image</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawImageRect_3_dst'>dst</a>, using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>,
|
|
and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_3_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_3_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawImageRect_3_image'>image</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawImageRect_3_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawImageRect_3_image'>image</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawImageRect_3_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImageRect_3_image'>image</a> edge colors, just
|
|
as <a href='undocumented#SkShader'>SkShader</a> made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set
|
|
replicates the <a href='#SkCanvas_drawImageRect_3_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_3_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_3_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='#SkCanvas_drawImageRect_3_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_3_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageRect_3"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a>
|
|
|
|
<a name='SkCanvas_drawImageRect_4'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& src, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>, <a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawImageRect_4_src'>src</a> of <a href='SkImage_Reference#SkImage'>SkImage</a> <a href='#SkCanvas_drawImageRect_4_image'>image</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawImageRect_4_dst'>dst</a>.
|
|
Additionally transform draw using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_4_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_4_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawImageRect_4_image'>image</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawImageRect_4_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawImageRect_4_image'>image</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawImageRect_4_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImageRect_4_image'>image</a> edge colors, just
|
|
as <a href='undocumented#SkShader'>SkShader</a> made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set
|
|
replicates the <a href='#SkCanvas_drawImageRect_4_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_4_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_4_src'><code><strong>src</strong></code></a></td>
|
|
<td>source <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='#SkCanvas_drawImageRect_4_image'>image</a> to draw from</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_4_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='#SkCanvas_drawImageRect_4_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_4_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_4_constraint'><code><strong>constraint</strong></code></a></td>
|
|
<td>filter strictly within <a href='#SkCanvas_drawImageRect_4_src'>src</a> or draw faster</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageRect_4"><div><a href='SkCanvas_Reference#Canvas'>Canvas</a> scales and translates; transformation from <a href='#SkCanvas_drawImageRect_4_src'>src</a> to <a href='#SkCanvas_drawImageRect_4_dst'>dst</a> also scales.
|
|
The two <a href='SkMatrix_Reference#Matrix'>matrices</a> are concatenated to create the final transformation.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a>
|
|
|
|
<a name='SkCanvas_drawImageRect_5'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& isrc, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>, <a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkCanvas_drawImageRect_5_isrc'>isrc</a> of <a href='SkImage_Reference#SkImage'>SkImage</a> <a href='#SkCanvas_drawImageRect_5_image'>image</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawImageRect_5_dst'>dst</a>.
|
|
<a href='#SkCanvas_drawImageRect_5_isrc'>isrc</a> is on integer <a href='undocumented#Pixel'>pixel</a> boundaries; <a href='#SkCanvas_drawImageRect_5_dst'>dst</a> may include fractional boundaries.
|
|
Additionally transform draw using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_5_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_5_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawImageRect_5_image'>image</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawImageRect_5_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawImageRect_5_image'>image</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawImageRect_5_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImageRect_5_image'>image</a> edge colors, just
|
|
as <a href='undocumented#SkShader'>SkShader</a> made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set
|
|
replicates the <a href='#SkCanvas_drawImageRect_5_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
<a href='#SkCanvas_drawImageRect_5_constraint'>constraint</a> set to <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a> limits <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> to
|
|
sample within <a href='#SkCanvas_drawImageRect_5_image'>image</a>; set to <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> allows sampling outside to
|
|
improve performance.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_5_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_5_isrc'><code><strong>isrc</strong></code></a></td>
|
|
<td>source <a href='SkIRect_Reference#SkIRect'>SkIRect</a> of <a href='#SkCanvas_drawImageRect_5_image'>image</a> to draw from</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_5_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='#SkCanvas_drawImageRect_5_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_5_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_5_constraint'><code><strong>constraint</strong></code></a></td>
|
|
<td>filter strictly within <a href='#SkCanvas_drawImageRect_5_image'>image</a> or draw faster</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageRect_5"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a>
|
|
|
|
<a name='SkCanvas_drawImageRect_6'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageRect'>drawImageRect</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkImage_Reference#SkImage'>SkImage</a> <a href='#SkCanvas_drawImageRect_6_image'>image</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawImageRect_6_dst'>dst</a>,
|
|
using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_6_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawImageRect_6_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawImageRect_6_image'>image</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawImageRect_6_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawImageRect_6_image'>image</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawImageRect_6_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImageRect_6_image'>image</a> edge colors, just
|
|
as <a href='undocumented#SkShader'>SkShader</a> made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set
|
|
replicates the <a href='#SkCanvas_drawImageRect_6_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
constraint set to <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a> limits <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> to
|
|
sample within <a href='#SkCanvas_drawImageRect_6_image'>image</a>; set to <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> allows sampling outside to
|
|
improve performance.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageRect_6_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_6_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='#SkCanvas_drawImageRect_6_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageRect_6_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageRect_6"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a>
|
|
|
|
<a name='SkCanvas_drawImageNine'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageNine'>drawImageNine</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& center, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='SkImage_Reference#Image'>Image</a> <a href='#SkCanvas_drawImageNine_image'>image</a> stretched proportionally to fit into <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkCanvas_drawImageNine_dst'>dst</a>.
|
|
<a href='SkIRect_Reference#IRect'>IRect</a> <a href='#SkCanvas_drawImageNine_center'>center</a> divides the <a href='#SkCanvas_drawImageNine_image'>image</a> into nine sections: four sides, four corners, and
|
|
the <a href='#SkCanvas_drawImageNine_center'>center</a>. Corners are unmodified or scaled down proportionately if their sides
|
|
are larger than <a href='#SkCanvas_drawImageNine_dst'>dst</a>; <a href='#SkCanvas_drawImageNine_center'>center</a> and four sides are scaled to fit remaining space, if any.
|
|
|
|
Additionally transform draw using Clip, <a href='SkMatrix_Reference#Matrix'>Matrix</a>, and optional <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawImageNine_paint'>paint</a>.
|
|
If <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawImageNine_paint'>paint</a> is supplied, apply <a href='#Color_Filter'>Color_Filter</a>, <a href='#Color_Alpha'>Color_Alpha</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
<a href='#Blend_Mode'>Blend_Mode</a>, and <a href='#Draw_Looper'>Draw_Looper</a>. If image is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#Shader'>Shader</a>.
|
|
If <a href='#SkCanvas_drawImageNine_paint'>paint</a> contains <a href='#Mask_Filter'>Mask_Filter</a>, generate mask from image bounds. If <a href='#SkCanvas_drawImageNine_paint'>paint</a>
|
|
<a href='#Filter_Quality'>Filter_Quality</a> set to <a href='undocumented#kNone_SkFilterQuality'>kNone_SkFilterQuality</a>, disable <a href='undocumented#Pixel'>pixel</a> filtering. For all
|
|
other values of <a href='#SkCanvas_drawImageNine_paint'>paint</a> <a href='#Filter_Quality'>Filter_Quality</a>, use <a href='undocumented#kLow_SkFilterQuality'>kLow_SkFilterQuality</a> to filter pixels.
|
|
Any <a href='undocumented#SkMaskFilter'>SkMaskFilter</a> on <a href='#SkCanvas_drawImageNine_paint'>paint</a> is ignored as is <a href='#SkCanvas_drawImageNine_paint'>paint</a> <a href='#Paint_Anti_Alias'>Anti_Aliasing</a> state.
|
|
If generated mask extends beyond <a href='#SkCanvas_drawImageNine_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImageNine_image'>image</a> edge colors, just
|
|
as <a href='undocumented#Shader'>Shader</a> made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set
|
|
replicates the <a href='#SkCanvas_drawImageNine_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageNine_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#Image'>Image</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageNine_center'><code><strong>center</strong></code></a></td>
|
|
<td><a href='SkIRect_Reference#IRect'>IRect</a> edge of <a href='#SkCanvas_drawImageNine_image'>image</a> corners and sides</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageNine_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#Rect'>Rect</a> of <a href='#SkCanvas_drawImageNine_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageNine_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#Paint'>Paint</a> containing <a href='#Blend_Mode'>Blend_Mode</a>, <a href='#Color_Filter'>Color_Filter</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
and so on; or nullptr
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageNine"><div>The leftmost <a href='#SkCanvas_drawImageNine_image'>image</a> is smaller than <a href='#SkCanvas_drawImageNine_center'>center</a>; only corners are drawn, all scaled to fit.
|
|
The second <a href='#SkCanvas_drawImageNine_image'>image</a> equals the <a href='undocumented#Size'>size</a> of <a href='#SkCanvas_drawImageNine_center'>center</a>; only corners are drawn without scaling.
|
|
The remaining images are larger than <a href='#SkCanvas_drawImageNine_center'>center</a>. All corners draw without scaling.
|
|
The sides and <a href='#SkCanvas_drawImageNine_center'>center</a> are scaled if needed to take up the remaining space.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageRect'>drawImageRect</a>
|
|
|
|
<a name='SkCanvas_drawImageNine_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageNine'>drawImageNine</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& <a href='SkImage_Reference#Image'>image</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& center, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='SkImage_Reference#Image'>Image</a> <a href='#SkCanvas_drawImageNine_2_image'>image</a> stretched proportionally to fit into <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkCanvas_drawImageNine_2_dst'>dst</a>.
|
|
<a href='SkIRect_Reference#IRect'>IRect</a> <a href='#SkCanvas_drawImageNine_2_center'>center</a> divides the <a href='#SkCanvas_drawImageNine_2_image'>image</a> into nine sections: four sides, four corners, and
|
|
the <a href='#SkCanvas_drawImageNine_2_center'>center</a>. Corners are not scaled, or scaled down proportionately if their sides
|
|
are larger than <a href='#SkCanvas_drawImageNine_2_dst'>dst</a>; <a href='#SkCanvas_drawImageNine_2_center'>center</a> and four sides are scaled to fit remaining space, if any.
|
|
|
|
Additionally transform draw using Clip, <a href='SkMatrix_Reference#Matrix'>Matrix</a>, and optional <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawImageNine_2_paint'>paint</a>.
|
|
If <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawImageNine_2_paint'>paint</a> is supplied, apply <a href='#Color_Filter'>Color_Filter</a>, <a href='#Color_Alpha'>Color_Alpha</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
<a href='#Blend_Mode'>Blend_Mode</a>, and <a href='#Draw_Looper'>Draw_Looper</a>. If image is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#Shader'>Shader</a>.
|
|
If <a href='#SkCanvas_drawImageNine_2_paint'>paint</a> contains <a href='#Mask_Filter'>Mask_Filter</a>, generate mask from image bounds. If <a href='#SkCanvas_drawImageNine_2_paint'>paint</a>
|
|
<a href='#Filter_Quality'>Filter_Quality</a> set to <a href='undocumented#kNone_SkFilterQuality'>kNone_SkFilterQuality</a>, disable <a href='undocumented#Pixel'>pixel</a> filtering. For all
|
|
other values of <a href='#SkCanvas_drawImageNine_2_paint'>paint</a> <a href='#Filter_Quality'>Filter_Quality</a>, use <a href='undocumented#kLow_SkFilterQuality'>kLow_SkFilterQuality</a> to filter pixels.
|
|
Any <a href='undocumented#SkMaskFilter'>SkMaskFilter</a> on <a href='#SkCanvas_drawImageNine_2_paint'>paint</a> is ignored as is <a href='#SkCanvas_drawImageNine_2_paint'>paint</a> <a href='#Paint_Anti_Alias'>Anti_Aliasing</a> state.
|
|
If generated mask extends beyond <a href='#SkCanvas_drawImageNine_2_image'>image</a> bounds, replicate <a href='#SkCanvas_drawImageNine_2_image'>image</a> edge colors, just
|
|
as <a href='undocumented#Shader'>Shader</a> made from <a href='SkImage_Reference#SkImage'>SkImage</a>::<a href='#SkImage_makeShader'>makeShader</a> with <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set
|
|
replicates the <a href='#SkCanvas_drawImageNine_2_image'>image</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageNine_2_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#Image'>Image</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageNine_2_center'><code><strong>center</strong></code></a></td>
|
|
<td><a href='SkIRect_Reference#IRect'>IRect</a> edge of <a href='#SkCanvas_drawImageNine_2_image'>image</a> corners and sides</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageNine_2_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#Rect'>Rect</a> of <a href='#SkCanvas_drawImageNine_2_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageNine_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#Paint'>Paint</a> containing <a href='#Blend_Mode'>Blend_Mode</a>, <a href='#Color_Filter'>Color_Filter</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
and so on; or nullptr
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageNine_2"><div>The two leftmost images has four corners and sides to the left and right of <a href='#SkCanvas_drawImageNine_2_center'>center</a>.
|
|
The leftmost <a href='#SkCanvas_drawImageNine_2_image'>image</a> scales the width of corners proportionately to fit.
|
|
The third and fourth <a href='#SkCanvas_drawImageNine_2_image'>image</a> corners are not scaled; the sides and <a href='#SkCanvas_drawImageNine_2_center'>center</a> are scaled to
|
|
fill the remaining space.
|
|
The rightmost <a href='#SkCanvas_drawImageNine_2_image'>image</a> has four corners scaled vertically to fit, and uses sides above
|
|
and below <a href='#SkCanvas_drawImageNine_2_center'>center</a> to fill the remaining space.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a> <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawImageRect'>drawImageRect</a>
|
|
|
|
<a name='SkCanvas_drawBitmap'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawBitmap'>drawBitmap</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, <a href='undocumented#SkScalar'>SkScalar</a> left, <a href='undocumented#SkScalar'>SkScalar</a> top, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> <a href='#SkCanvas_drawBitmap_bitmap'>bitmap</a>, with its top-left corner at (<a href='#SkCanvas_drawBitmap_left'>left</a>, <a href='#SkCanvas_drawBitmap_top'>top</a>),
|
|
using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawBitmap_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawBitmap_paint'>paint</a> is not nullptr, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawBitmap_bitmap'>bitmap</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawBitmap_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawBitmap_bitmap'>bitmap</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawBitmap_bitmap'>bitmap</a> bounds, replicate <a href='#SkCanvas_drawBitmap_bitmap'>bitmap</a> edge colors,
|
|
just as <a href='undocumented#SkShader'>SkShader</a> made from <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_MakeBitmapShader'>MakeBitmapShader</a> with
|
|
<a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the <a href='#SkCanvas_drawBitmap_bitmap'>bitmap</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples
|
|
outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmap_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td><a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmap_left'><code><strong>left</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawBitmap_left'>left side</a> of <a href='#SkCanvas_drawBitmap_bitmap'>bitmap</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmap_top'><code><strong>top</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawBitmap_top'>top</a> side of <a href='#SkCanvas_drawBitmap_bitmap'>bitmap</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmap_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawBitmap"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawBitmapLattice'>drawBitmapLattice</a> <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a> <a href='#SkCanvas_drawBitmapRect'>drawBitmapRect</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_readPixels'>readPixels</a> <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>::<a href='#SkBitmap_writePixels'>writePixels</a>
|
|
|
|
<a name='SkCanvas_drawBitmapRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawBitmapRect'>drawBitmapRect</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& src, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>, <a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawBitmapRect_src'>src</a> of <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> <a href='#SkCanvas_drawBitmapRect_bitmap'>bitmap</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawBitmapRect_dst'>dst</a>.
|
|
Additionally transform draw using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawBitmapRect_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawBitmapRect_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawBitmapRect_bitmap'>bitmap</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawBitmapRect_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawBitmapRect_bitmap'>bitmap</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawBitmapRect_bitmap'>bitmap</a> bounds, replicate <a href='#SkCanvas_drawBitmapRect_bitmap'>bitmap</a> edge colors,
|
|
just as <a href='undocumented#SkShader'>SkShader</a> made from <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_MakeBitmapShader'>MakeBitmapShader</a> with
|
|
<a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the <a href='#SkCanvas_drawBitmapRect_bitmap'>bitmap</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples
|
|
outside of its bounds.
|
|
|
|
<a href='#SkCanvas_drawBitmapRect_constraint'>constraint</a> set to <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a> limits <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> to
|
|
sample within <a href='#SkCanvas_drawBitmapRect_src'>src</a>; set to <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> allows sampling outside to
|
|
improve performance.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmapRect_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td><a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapRect_src'><code><strong>src</strong></code></a></td>
|
|
<td>source <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='SkImage_Reference#Image'>image</a> to draw from</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapRect_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='SkImage_Reference#Image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapRect_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmapRect_constraint'><code><strong>constraint</strong></code></a></td>
|
|
<td>filter strictly within <a href='#SkCanvas_drawBitmapRect_src'>src</a> or draw faster</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawBitmapRect"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImageRect'>drawImageRect</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawBitmapLattice'>drawBitmapLattice</a> <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a>
|
|
|
|
<a name='SkCanvas_drawBitmapRect_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawBitmapRect'>drawBitmapRect</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& isrc, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>, <a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkIRect_Reference#SkIRect'>SkIRect</a> <a href='#SkCanvas_drawBitmapRect_2_isrc'>isrc</a> of <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> <a href='#SkCanvas_drawBitmapRect_2_bitmap'>bitmap</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawBitmapRect_2_dst'>dst</a>.
|
|
<a href='#SkCanvas_drawBitmapRect_2_isrc'>isrc</a> is on integer <a href='undocumented#Pixel'>pixel</a> boundaries; <a href='#SkCanvas_drawBitmapRect_2_dst'>dst</a> may include fractional boundaries.
|
|
Additionally transform draw using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawBitmapRect_2_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawBitmapRect_2_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawBitmapRect_2_bitmap'>bitmap</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawBitmapRect_2_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawBitmapRect_2_bitmap'>bitmap</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawBitmapRect_2_bitmap'>bitmap</a> bounds, replicate <a href='#SkCanvas_drawBitmapRect_2_bitmap'>bitmap</a> edge colors,
|
|
just as <a href='undocumented#SkShader'>SkShader</a> made from <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_MakeBitmapShader'>MakeBitmapShader</a> with
|
|
<a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the <a href='#SkCanvas_drawBitmapRect_2_bitmap'>bitmap</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples
|
|
outside of its bounds.
|
|
|
|
<a href='#SkCanvas_drawBitmapRect_2_constraint'>constraint</a> set to <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a> limits <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> to
|
|
sample within <a href='#SkCanvas_drawBitmapRect_2_isrc'>isrc</a>; set to <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> allows sampling outside to
|
|
improve performance.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmapRect_2_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td><a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapRect_2_isrc'><code><strong>isrc</strong></code></a></td>
|
|
<td>source <a href='SkIRect_Reference#SkIRect'>SkIRect</a> of <a href='SkImage_Reference#Image'>image</a> to draw from</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapRect_2_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='SkImage_Reference#Image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapRect_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmapRect_2_constraint'><code><strong>constraint</strong></code></a></td>
|
|
<td>sample strictly within <a href='#SkCanvas_drawBitmapRect_2_isrc'>isrc</a>, or draw faster</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawBitmapRect_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImageRect'>drawImageRect</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawBitmapLattice'>drawBitmapLattice</a> <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a>
|
|
|
|
<a name='SkCanvas_drawBitmapRect_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawBitmapRect'>drawBitmapRect</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>,
|
|
<a href='#SkCanvas_SrcRectConstraint'>SrcRectConstraint</a> constraint = <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> <a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a>, scaled and translated to fill <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawBitmapRect_3_dst'>dst</a>.
|
|
<a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a> bounds is on integer <a href='undocumented#Pixel'>pixel</a> boundaries; <a href='#SkCanvas_drawBitmapRect_3_dst'>dst</a> may include fractional boundaries.
|
|
Additionally transform draw using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawBitmapRect_3_paint'>paint</a>.
|
|
|
|
If <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawBitmapRect_3_paint'>paint</a> is supplied, apply <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>. If <a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a> is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#SkShader'>SkShader</a>.
|
|
If <a href='#SkCanvas_drawBitmapRect_3_paint'>paint</a> contains <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, generate mask from <a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a> bounds.
|
|
|
|
If generated mask extends beyond <a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a> bounds, replicate <a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a> edge colors,
|
|
just as <a href='undocumented#SkShader'>SkShader</a> made from <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_MakeBitmapShader'>MakeBitmapShader</a> with
|
|
<a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the <a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples
|
|
outside of its bounds.
|
|
|
|
<a href='#SkCanvas_drawBitmapRect_3_constraint'>constraint</a> set to <a href='#SkCanvas_kStrict_SrcRectConstraint'>kStrict_SrcRectConstraint</a> limits <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#SkFilterQuality'>SkFilterQuality</a> to
|
|
sample within <a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a>; set to <a href='#SkCanvas_kFast_SrcRectConstraint'>kFast_SrcRectConstraint</a> allows sampling outside to
|
|
improve performance.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmapRect_3_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td><a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapRect_3_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#SkRect'>SkRect</a> of <a href='SkImage_Reference#Image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapRect_3_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> containing <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
and so on; or nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmapRect_3_constraint'><code><strong>constraint</strong></code></a></td>
|
|
<td>filter strictly within <a href='#SkCanvas_drawBitmapRect_3_bitmap'>bitmap</a> or draw faster</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawBitmapRect_3"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImageRect'>drawImageRect</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawBitmapLattice'>drawBitmapLattice</a> <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a>
|
|
|
|
<a name='SkCanvas_drawBitmapNine'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>& center, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> <a href='#SkCanvas_drawBitmapNine_bitmap'>bitmap</a> stretched proportionally to fit into <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkCanvas_drawBitmapNine_dst'>dst</a>.
|
|
<a href='SkIRect_Reference#IRect'>IRect</a> <a href='#SkCanvas_drawBitmapNine_center'>center</a> divides the <a href='#SkCanvas_drawBitmapNine_bitmap'>bitmap</a> into nine sections: four sides, four corners,
|
|
and the <a href='#SkCanvas_drawBitmapNine_center'>center</a>. Corners are not scaled, or scaled down proportionately if their
|
|
sides are larger than <a href='#SkCanvas_drawBitmapNine_dst'>dst</a>; <a href='#SkCanvas_drawBitmapNine_center'>center</a> and four sides are scaled to fit remaining
|
|
space, if any.
|
|
|
|
Additionally transform draw using Clip, <a href='SkMatrix_Reference#Matrix'>Matrix</a>, and optional <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawBitmapNine_paint'>paint</a>.
|
|
If <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawBitmapNine_paint'>paint</a> is supplied, apply <a href='#Color_Filter'>Color_Filter</a>, <a href='#Color_Alpha'>Color_Alpha</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
<a href='#Blend_Mode'>Blend_Mode</a>, and <a href='#Draw_Looper'>Draw_Looper</a>. If bitmap is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#Shader'>Shader</a>.
|
|
If <a href='#SkCanvas_drawBitmapNine_paint'>paint</a> contains <a href='#Mask_Filter'>Mask_Filter</a>, generate mask from bitmap bounds. If <a href='#SkCanvas_drawBitmapNine_paint'>paint</a>
|
|
<a href='#Filter_Quality'>Filter_Quality</a> set to <a href='undocumented#kNone_SkFilterQuality'>kNone_SkFilterQuality</a>, disable <a href='undocumented#Pixel'>pixel</a> filtering. For all
|
|
other values of <a href='#SkCanvas_drawBitmapNine_paint'>paint</a> <a href='#Filter_Quality'>Filter_Quality</a>, use <a href='undocumented#kLow_SkFilterQuality'>kLow_SkFilterQuality</a> to filter pixels.
|
|
Any <a href='undocumented#SkMaskFilter'>SkMaskFilter</a> on <a href='#SkCanvas_drawBitmapNine_paint'>paint</a> is ignored as is <a href='#SkCanvas_drawBitmapNine_paint'>paint</a> <a href='#Paint_Anti_Alias'>Anti_Aliasing</a> state.
|
|
If generated mask extends beyond <a href='#SkCanvas_drawBitmapNine_bitmap'>bitmap</a> bounds, replicate <a href='#SkCanvas_drawBitmapNine_bitmap'>bitmap</a> edge colors,
|
|
just as <a href='undocumented#Shader'>Shader</a> made from <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_MakeBitmapShader'>MakeBitmapShader</a> with
|
|
<a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the <a href='#SkCanvas_drawBitmapNine_bitmap'>bitmap</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples
|
|
outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmapNine_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td><a href='SkBitmap_Reference#Bitmap'>Bitmap</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapNine_center'><code><strong>center</strong></code></a></td>
|
|
<td><a href='SkIRect_Reference#IRect'>IRect</a> edge of <a href='SkImage_Reference#Image'>image</a> corners and sides</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapNine_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#Rect'>Rect</a> of <a href='SkImage_Reference#Image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapNine_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#Paint'>Paint</a> containing <a href='#Blend_Mode'>Blend_Mode</a>, <a href='#Color_Filter'>Color_Filter</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
and so on; or nullptr
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawBitmapNine"><div>The two leftmost <a href='#SkCanvas_drawBitmapNine_bitmap'>bitmap</a> draws has four corners and sides to the left and right of <a href='#SkCanvas_drawBitmapNine_center'>center</a>.
|
|
The leftmost <a href='SkBitmap_Reference#Bitmap_Draw'>bitmap draw</a> scales the width of corners proportionately to fit.
|
|
The third and fourth draw corners are not scaled; the sides and <a href='#SkCanvas_drawBitmapNine_center'>center</a> are scaled to
|
|
fill the remaining space.
|
|
The rightmost <a href='SkBitmap_Reference#Bitmap_Draw'>bitmap draw</a> has four corners scaled vertically to fit, and uses sides above
|
|
and below <a href='#SkCanvas_drawBitmapNine_center'>center</a> to fill the remaining space.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImageNine'>drawImageNine</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawBitmapLattice'>drawBitmapLattice</a> <a href='#SkCanvas_drawBitmapRect'>drawBitmapRect</a>
|
|
|
|
<a name='Draw_Image_Lattice'></a>
|
|
|
|
<a name='SkCanvas_Lattice'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
struct <a href='#SkCanvas_Lattice'>Lattice</a> {
|
|
|
|
enum <a href='#SkCanvas_Lattice_RectType'>RectType</a> : uint8_t {
|
|
<a href='#SkCanvas_Lattice_kDefault'>kDefault</a> = 0,
|
|
<a href='#SkCanvas_Lattice_kTransparent'>kTransparent</a>,
|
|
<a href='#SkCanvas_Lattice_kFixedColor'>kFixedColor</a>,
|
|
};
|
|
|
|
const int* <a href='#SkCanvas_Lattice_fXDivs'>fXDivs</a>;
|
|
const int* <a href='#SkCanvas_Lattice_fYDivs'>fYDivs</a>;
|
|
const <a href='#SkCanvas_Lattice_RectType'>RectType</a>* <a href='#SkCanvas_Lattice_fRectTypes'>fRectTypes</a>;
|
|
int <a href='#SkCanvas_Lattice_fXCount'>fXCount</a>;
|
|
int <a href='#SkCanvas_Lattice_fYCount'>fYCount</a>;
|
|
const <a href='SkIRect_Reference#SkIRect'>SkIRect</a>* <a href='#SkCanvas_Lattice_fBounds'>fBounds</a>;
|
|
const <a href='SkColor_Reference#SkColor'>SkColor</a>* <a href='#SkCanvas_Lattice_fColors'>fColors</a>;
|
|
};
|
|
|
|
</pre>
|
|
|
|
<a href='#SkCanvas_Lattice'>Lattice</a> divides <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> or <a href='SkImage_Reference#Image'>Image</a> into a rectangular grid.
|
|
Grid entries on even columns and even rows are fixed; these entries are
|
|
always drawn at their original <a href='undocumented#Size'>size</a> if the destination is large enough.
|
|
If the destination side is too small to hold the fixed entries, all fixed
|
|
entries are proportionately scaled down to fit.
|
|
The grid entries not on even columns and rows are scaled to fit the
|
|
remaining space, if any.
|
|
|
|
<a name='SkCanvas_Lattice_RectType'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em;width: 62.5em; background-color: #f0f0f0">
|
|
enum <a href='#SkCanvas_Lattice_RectType'>RectType</a> : uint8_t {
|
|
<a href='#SkCanvas_Lattice_kDefault'>kDefault</a> = 0,
|
|
<a href='#SkCanvas_Lattice_kTransparent'>kTransparent</a>,
|
|
<a href='#SkCanvas_Lattice_kFixedColor'>kFixedColor</a>,
|
|
};
|
|
|
|
</pre>
|
|
|
|
Optional setting per rectangular grid entry to make it transparent,
|
|
or to fill the grid entry with a <a href='SkColor_Reference#Color'>color</a>.
|
|
|
|
### Constants
|
|
|
|
<table style='border-collapse: collapse; width: 62.5em'>
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Const</th>
|
|
<th style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>Value</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_kDefault'><code>SkCanvas::Lattice::kDefault</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>0</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
draws Bitmap into lattice rectangle</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_kTransparent'><code>SkCanvas::Lattice::kTransparent</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>1</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
skips lattice rectangle by making it transparent</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_kFixedColor'><code>SkCanvas::Lattice::kFixedColor</code></a></td>
|
|
<td style='text-align: center; border: 2px solid #dddddd; padding: 8px; '>2</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
draws one of fColors into lattice rectangle</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='Draw_Image_Lattice_Members'></a><table style='border-collapse: collapse; width: 62.5em'>
|
|
|
|
<tr><th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Type</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Member</th>
|
|
<th style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>Description</th></tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const int*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_fXDivs'><code>fXDivs</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Array of x-axis values that divide the <a href='SkBitmap_Reference#Bitmap'>bitmap</a> vertically.
|
|
Array entries must be unique, increasing, greater than or equal to
|
|
<a href='#SkCanvas_Lattice_fBounds'>fBounds</a> left edge, and less than <a href='#SkCanvas_Lattice_fBounds'>fBounds</a> right edge.
|
|
Set the first element to <a href='#SkCanvas_Lattice_fBounds'>fBounds</a> left to collapse the left column of
|
|
fixed grid entries.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const int*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_fYDivs'><code>fYDivs</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Array of y-axis values that divide the <a href='SkBitmap_Reference#Bitmap'>bitmap</a> horizontally.
|
|
Array entries must be unique, increasing, greater than or equal to
|
|
<a href='#SkCanvas_Lattice_fBounds'>fBounds</a> top edge, and less than <a href='#SkCanvas_Lattice_fBounds'>fBounds</a> bottom edge.
|
|
Set the first element to <a href='#SkCanvas_Lattice_fBounds'>fBounds</a> top to collapse the top row of fixed
|
|
grid entries.
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const RectType*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_fRectTypes'><code>fRectTypes</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Optional array of fill types, one per rectangular grid entry:
|
|
array length must be <code>(<a href='#SkCanvas_Lattice_fXCount'>fXCount</a> + 1) * (<a href='#SkCanvas_Lattice_fYCount'>fYCount</a> + 1)</code>.
|
|
|
|
Each <a href='#SkCanvas_Lattice_RectType'>RectType</a> is one of: <a href='#SkCanvas_Lattice_kDefault'>kDefault</a>, <a href='#SkCanvas_Lattice_kTransparent'>kTransparent</a>, <a href='#SkCanvas_Lattice_kFixedColor'>kFixedColor</a>.
|
|
|
|
Array entries correspond to the rectangular grid entries, ascending
|
|
left to right and then top to bottom.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>int</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_fXCount'><code>fXCount</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Number of entries in <a href='#SkCanvas_Lattice_fXDivs'>fXDivs</a> array; one less than the number of
|
|
horizontal divisions.
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>int</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_fYCount'><code>fYCount</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Number of entries in <a href='#SkCanvas_Lattice_fYDivs'>fYDivs</a> array; one less than the number of vertical
|
|
divisions.
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const SkIRect*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_fBounds'><code>fBounds</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Optional subset <a href='SkIRect_Reference#IRect'>IRect</a> source to draw from.
|
|
If nullptr, source bounds is dimensions of <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> or <a href='SkImage_Reference#Image'>Image</a>.
|
|
</td>
|
|
</tr>
|
|
<tr style='background-color: #f0f0f0; '>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>const SkColor*</td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '><a name='SkCanvas_Lattice_fColors'><code>fColors</code></a></td>
|
|
<td style='text-align: left; border: 2px solid #dddddd; padding: 8px; '>
|
|
Optional array of colors, one per rectangular grid entry.
|
|
Array length must be <code>(<a href='#SkCanvas_Lattice_fXCount'>fXCount</a> + 1) * (<a href='#SkCanvas_Lattice_fYCount'>fYCount</a> + 1)</code>.
|
|
|
|
Array entries correspond to the rectangular grid entries, ascending
|
|
left to right, then top to bottom.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<a name='SkCanvas_drawBitmapLattice'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawBitmapLattice'>drawBitmapLattice</a>(const <a href='SkBitmap_Reference#SkBitmap'>SkBitmap</a>& <a href='SkBitmap_Reference#Bitmap'>bitmap</a>, const <a href='#SkCanvas_Lattice'>Lattice</a>& lattice, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='SkBitmap_Reference#Bitmap'>Bitmap</a> <a href='#SkCanvas_drawBitmapLattice_bitmap'>bitmap</a> stretched proportionally to fit into <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkCanvas_drawBitmapLattice_dst'>dst</a>.
|
|
|
|
<a href='#SkCanvas_Lattice'>Lattice</a> <a href='#SkCanvas_drawBitmapLattice_lattice'>lattice</a> divides <a href='#SkCanvas_drawBitmapLattice_bitmap'>bitmap</a> into a rectangular grid.
|
|
Each intersection of an even-numbered row and column is fixed; like the corners
|
|
of <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a>, fixed <a href='#SkCanvas_drawBitmapLattice_lattice'>lattice</a> elements never scale larger than their initial
|
|
<a href='undocumented#Size'>size</a> and shrink proportionately when all fixed elements exceed the <a href='#SkCanvas_drawBitmapLattice_bitmap'>bitmap</a>
|
|
dimension. All other grid elements scale to fill the available space, if any.
|
|
|
|
Additionally transform draw using Clip, <a href='SkMatrix_Reference#Matrix'>Matrix</a>, and optional <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawBitmapLattice_paint'>paint</a>.
|
|
If <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawBitmapLattice_paint'>paint</a> is supplied, apply <a href='#Color_Filter'>Color_Filter</a>, <a href='#Color_Alpha'>Color_Alpha</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
<a href='#Blend_Mode'>Blend_Mode</a>, and <a href='#Draw_Looper'>Draw_Looper</a>. If bitmap is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#Shader'>Shader</a>.
|
|
If <a href='#SkCanvas_drawBitmapLattice_paint'>paint</a> contains <a href='#Mask_Filter'>Mask_Filter</a>, generate mask from bitmap bounds. If <a href='#SkCanvas_drawBitmapLattice_paint'>paint</a>
|
|
<a href='#Filter_Quality'>Filter_Quality</a> set to <a href='undocumented#kNone_SkFilterQuality'>kNone_SkFilterQuality</a>, disable <a href='undocumented#Pixel'>pixel</a> filtering. For all
|
|
other values of <a href='#SkCanvas_drawBitmapLattice_paint'>paint</a> <a href='#Filter_Quality'>Filter_Quality</a>, use <a href='undocumented#kLow_SkFilterQuality'>kLow_SkFilterQuality</a> to filter pixels.
|
|
Any <a href='undocumented#SkMaskFilter'>SkMaskFilter</a> on <a href='#SkCanvas_drawBitmapLattice_paint'>paint</a> is ignored as is <a href='#SkCanvas_drawBitmapLattice_paint'>paint</a> <a href='#Paint_Anti_Alias'>Anti_Aliasing</a> state.
|
|
If generated mask extends beyond <a href='#SkCanvas_drawBitmapLattice_bitmap'>bitmap</a> bounds, replicate <a href='#SkCanvas_drawBitmapLattice_bitmap'>bitmap</a> edge colors,
|
|
just as <a href='undocumented#Shader'>Shader</a> made from <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_MakeBitmapShader'>MakeBitmapShader</a> with
|
|
<a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the <a href='#SkCanvas_drawBitmapLattice_bitmap'>bitmap</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples
|
|
outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawBitmapLattice_bitmap'><code><strong>bitmap</strong></code></a></td>
|
|
<td><a href='SkBitmap_Reference#Bitmap'>Bitmap</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapLattice_lattice'><code><strong>lattice</strong></code></a></td>
|
|
<td>division of <a href='#SkCanvas_drawBitmapLattice_bitmap'>bitmap</a> into fixed and variable rectangles</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapLattice_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#Rect'>Rect</a> of <a href='SkImage_Reference#Image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawBitmapLattice_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#Paint'>Paint</a> containing <a href='#Blend_Mode'>Blend_Mode</a>, <a href='#Color_Filter'>Color_Filter</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
and so on; or nullptr
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawBitmapLattice"><div>The two leftmost <a href='#SkCanvas_drawBitmapLattice_bitmap'>bitmap</a> draws has four corners and sides to the left and right of center.
|
|
The leftmost <a href='SkBitmap_Reference#Bitmap_Draw'>bitmap draw</a> scales the width of corners proportionately to fit.
|
|
The third and fourth draw corners are not scaled; the sides are scaled to
|
|
fill the remaining space; the center is transparent.
|
|
The rightmost <a href='SkBitmap_Reference#Bitmap_Draw'>bitmap draw</a> has four corners scaled vertically to fit, and uses sides above
|
|
and below center to fill the remaining space.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawImageLattice'>drawImageLattice</a> <a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a> <a href='#SkCanvas_Lattice'>Lattice</a>
|
|
|
|
<a name='SkCanvas_drawImageLattice'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawImageLattice'>drawImageLattice</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* <a href='SkImage_Reference#Image'>image</a>, const <a href='#SkCanvas_Lattice'>Lattice</a>& lattice, const <a href='SkRect_Reference#SkRect'>SkRect</a>& dst,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='SkImage_Reference#Image'>Image</a> <a href='#SkCanvas_drawImageLattice_image'>image</a> stretched proportionally to fit into <a href='SkRect_Reference#Rect'>Rect</a> <a href='#SkCanvas_drawImageLattice_dst'>dst</a>.
|
|
|
|
<a href='#SkCanvas_Lattice'>Lattice</a> <a href='#SkCanvas_drawImageLattice_lattice'>lattice</a> divides <a href='#SkCanvas_drawImageLattice_image'>image</a> into a rectangular grid.
|
|
Each intersection of an even-numbered row and column is fixed; like the corners
|
|
of <a href='#SkCanvas_drawBitmapNine'>drawBitmapNine</a>, fixed <a href='#SkCanvas_drawImageLattice_lattice'>lattice</a> elements never scale larger than their initial
|
|
<a href='undocumented#Size'>size</a> and shrink proportionately when all fixed elements exceed the <a href='SkBitmap_Reference#Bitmap'>bitmap</a>
|
|
dimension. All other grid elements scale to fill the available space, if any.
|
|
|
|
Additionally transform draw using Clip, <a href='SkMatrix_Reference#Matrix'>Matrix</a>, and optional <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawImageLattice_paint'>paint</a>.
|
|
If <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawImageLattice_paint'>paint</a> is supplied, apply <a href='#Color_Filter'>Color_Filter</a>, <a href='#Color_Alpha'>Color_Alpha</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
<a href='#Blend_Mode'>Blend_Mode</a>, and <a href='#Draw_Looper'>Draw_Looper</a>. If image is <a href='SkImageInfo_Reference#kAlpha_8_SkColorType'>kAlpha_8_SkColorType</a>, apply <a href='undocumented#Shader'>Shader</a>.
|
|
If <a href='#SkCanvas_drawImageLattice_paint'>paint</a> contains <a href='#Mask_Filter'>Mask_Filter</a>, generate mask from image bounds. If <a href='#SkCanvas_drawImageLattice_paint'>paint</a>
|
|
<a href='#Filter_Quality'>Filter_Quality</a> set to <a href='undocumented#kNone_SkFilterQuality'>kNone_SkFilterQuality</a>, disable <a href='undocumented#Pixel'>pixel</a> filtering. For all
|
|
other values of <a href='#SkCanvas_drawImageLattice_paint'>paint</a> <a href='#Filter_Quality'>Filter_Quality</a>, use <a href='undocumented#kLow_SkFilterQuality'>kLow_SkFilterQuality</a> to filter pixels.
|
|
Any <a href='undocumented#SkMaskFilter'>SkMaskFilter</a> on <a href='#SkCanvas_drawImageLattice_paint'>paint</a> is ignored as is <a href='#SkCanvas_drawImageLattice_paint'>paint</a> <a href='#Paint_Anti_Alias'>Anti_Aliasing</a> state.
|
|
If generated mask extends beyond <a href='SkBitmap_Reference#Bitmap'>bitmap</a> bounds, replicate <a href='SkBitmap_Reference#Bitmap'>bitmap</a> edge colors,
|
|
just as <a href='undocumented#Shader'>Shader</a> made from <a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_MakeBitmapShader'>MakeBitmapShader</a> with
|
|
<a href='undocumented#SkShader'>SkShader</a>::<a href='#SkShader_kClamp_TileMode'>kClamp_TileMode</a> set replicates the <a href='SkBitmap_Reference#Bitmap'>bitmap</a> edge <a href='SkColor_Reference#Color'>color</a> when it samples
|
|
outside of its bounds.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawImageLattice_image'><code><strong>image</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#Image'>Image</a> containing pixels, dimensions, and format</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageLattice_lattice'><code><strong>lattice</strong></code></a></td>
|
|
<td>division of <a href='SkBitmap_Reference#Bitmap'>bitmap</a> into fixed and variable rectangles</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageLattice_dst'><code><strong>dst</strong></code></a></td>
|
|
<td>destination <a href='SkRect_Reference#Rect'>Rect</a> of <a href='#SkCanvas_drawImageLattice_image'>image</a> to draw to</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawImageLattice_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#Paint'>Paint</a> containing <a href='#Blend_Mode'>Blend_Mode</a>, <a href='#Color_Filter'>Color_Filter</a>, <a href='#Image_Filter'>Image_Filter</a>,
|
|
and so on; or nullptr
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawImageNine"><div>The leftmost <a href='#SkCanvas_drawImageLattice_image'>image</a> is smaller than center; only corners are drawn, all scaled to fit.
|
|
The second <a href='#SkCanvas_drawImageLattice_image'>image</a> equals the <a href='undocumented#Size'>size</a> of center; only corners are drawn without scaling.
|
|
The remaining images are larger than center. All corners draw without scaling. The sides
|
|
are scaled if needed to take up the remaining space; the center is transparent.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawBitmapLattice'>drawBitmapLattice</a> <a href='#SkCanvas_drawImage'>drawImage</a> <a href='#SkCanvas_drawImageNine'>drawImageNine</a> <a href='#SkCanvas_Lattice'>Lattice</a>
|
|
|
|
<a name='Draw_Text'></a>
|
|
|
|
<a name='SkCanvas_drawText'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawText'>drawText</a>(const void* <a href='undocumented#Text'>text</a>, size_t byteLength, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='#SkCanvas_drawText_text'>text</a>, with origin at (<a href='#SkCanvas_drawText_x'>x</a>, <a href='#SkCanvas_drawText_y'>y</a>), using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawText_paint'>paint</a>.
|
|
|
|
<a href='#SkCanvas_drawText_text'>text</a> meaning depends on <a href='undocumented#SkTextEncoding'>SkTextEncoding</a>; by default, <a href='#SkCanvas_drawText_text'>text</a> is encoded as
|
|
UTF-8.
|
|
|
|
<a href='#SkCanvas_drawText_x'>x</a> and <a href='#SkCanvas_drawText_y'>y</a> meaning depends on <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::Align and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> vertical <a href='#SkCanvas_drawText_text'>text</a>; by default
|
|
<a href='#SkCanvas_drawText_text'>text</a> draws left to right, positioning the first <a href='undocumented#Glyph'>glyph</a> <a href='undocumented#Left_Side_Bearing'>left side bearing</a> at <a href='#SkCanvas_drawText_x'>x</a>
|
|
and its baseline at <a href='#SkCanvas_drawText_y'>y</a>. <a href='undocumented#Text'>Text</a> <a href='undocumented#Size'>size</a> is affected by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawText_text'>text</a> <a href='undocumented#Size'>size</a>.
|
|
|
|
All elements of <a href='#SkCanvas_drawText_paint'>paint</a>: <a href='undocumented#SkPathEffect'>SkPathEffect</a>, <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, <a href='undocumented#SkShader'>SkShader</a>,
|
|
<a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>; apply to <a href='#SkCanvas_drawText_text'>text</a>. By default, draws
|
|
filled 12 <a href='SkPoint_Reference#Point'>point</a> black <a href='undocumented#Glyph'>glyphs</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawText_text'><code><strong>text</strong></code></a></td>
|
|
<td>character code <a href='SkPoint_Reference#Point'>points</a> or <a href='undocumented#Glyph'>glyphs</a> drawn</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawText_byteLength'><code><strong>byteLength</strong></code></a></td>
|
|
<td>byte length of <a href='#SkCanvas_drawText_text'>text</a> array</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawText_x'><code><strong>x</strong></code></a></td>
|
|
<td>start of <a href='#SkCanvas_drawText_text'>text</a> on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawText_y'><code><strong>y</strong></code></a></td>
|
|
<td>start of <a href='#SkCanvas_drawText_text'>text</a> on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawText_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawText_text'>text</a> <a href='undocumented#Size'>size</a>, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawText"><div>The same <a href='#SkCanvas_drawText_text'>text</a> is drawn varying <a href='#Paint_Text_Size'>Paint_Text_Size</a> and varying
|
|
<a href='SkMatrix_Reference#Matrix'>Matrix</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawString'>drawString</a> <a href='#SkCanvas_drawPosText'>drawPosText</a> <a href='#SkCanvas_drawPosTextH'>drawPosTextH</a> <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a> <a href='#SkCanvas_drawTextRSXform'>drawTextRSXform</a>
|
|
|
|
<a name='SkCanvas_drawString'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawString'>drawString</a>(const char* <a href='undocumented#String'>string</a>, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws null terminated <a href='#SkCanvas_drawString_string'>string</a>, with origin at (<a href='#SkCanvas_drawString_x'>x</a>, <a href='#SkCanvas_drawString_y'>y</a>), using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawString_paint'>paint</a>.
|
|
|
|
<a href='#SkCanvas_drawString_string'>string</a> meaning depends on <a href='undocumented#SkTextEncoding'>SkTextEncoding</a>; by default, strings are encoded
|
|
as UTF-8. Other values of <a href='undocumented#SkTextEncoding'>SkTextEncoding</a> are unlikely to produce the desired
|
|
results, since zero bytes may be embedded in the <a href='#SkCanvas_drawString_string'>string</a>.
|
|
|
|
<a href='#SkCanvas_drawString_x'>x</a> and <a href='#SkCanvas_drawString_y'>y</a> meaning depends on <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::Align and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> vertical <a href='undocumented#Text'>text</a>; by default
|
|
<a href='#SkCanvas_drawString_string'>string</a> draws left to right, positioning the first <a href='undocumented#Glyph'>glyph</a> <a href='undocumented#Left_Side_Bearing'>left side bearing</a> at <a href='#SkCanvas_drawString_x'>x</a>
|
|
and its baseline at <a href='#SkCanvas_drawString_y'>y</a>. <a href='undocumented#Text'>Text</a> <a href='undocumented#Size'>size</a> is affected by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#Text'>text</a> <a href='undocumented#Size'>size</a>.
|
|
|
|
All elements of <a href='#SkCanvas_drawString_paint'>paint</a>: <a href='undocumented#SkPathEffect'>SkPathEffect</a>, <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, <a href='undocumented#SkShader'>SkShader</a>,
|
|
<a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>; apply to <a href='undocumented#Text'>text</a>. By default, draws
|
|
filled 12 <a href='SkPoint_Reference#Point'>point</a> black <a href='undocumented#Glyph'>glyphs</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawString_string'><code><strong>string</strong></code></a></td>
|
|
<td>character code <a href='SkPoint_Reference#Point'>points</a> or <a href='undocumented#Glyph'>glyphs</a> drawn,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
ending with a char value of zero
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawString_x'><code><strong>x</strong></code></a></td>
|
|
<td>start of <a href='#SkCanvas_drawString_string'>string</a> on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawString_y'><code><strong>y</strong></code></a></td>
|
|
<td>start of <a href='#SkCanvas_drawString_string'>string</a> on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawString_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='undocumented#Text'>text</a> <a href='undocumented#Size'>size</a>, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawString"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawText'>drawText</a> <a href='#SkCanvas_drawPosText'>drawPosText</a> <a href='#SkCanvas_drawPosTextH'>drawPosTextH</a> <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a> <a href='#SkCanvas_drawTextRSXform'>drawTextRSXform</a>
|
|
|
|
<a name='SkCanvas_drawString_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawString'>drawString</a>(const <a href='undocumented#SkString'>SkString</a>& <a href='undocumented#String'>string</a>, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws null terminated <a href='#SkCanvas_drawString_2_string'>string</a>, with origin at (<a href='#SkCanvas_drawString_2_x'>x</a>, <a href='#SkCanvas_drawString_2_y'>y</a>), using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawString_2_paint'>paint</a>.
|
|
|
|
<a href='#SkCanvas_drawString_2_string'>string</a> meaning depends on <a href='undocumented#SkTextEncoding'>SkTextEncoding</a>; by default, strings are encoded
|
|
as UTF-8. Other values of <a href='undocumented#SkTextEncoding'>SkTextEncoding</a> are unlikely to produce the desired
|
|
results, since zero bytes may be embedded in the <a href='#SkCanvas_drawString_2_string'>string</a>.
|
|
|
|
<a href='#SkCanvas_drawString_2_x'>x</a> and <a href='#SkCanvas_drawString_2_y'>y</a> meaning depends on <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::Align and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> vertical <a href='undocumented#Text'>text</a>; by default
|
|
<a href='#SkCanvas_drawString_2_string'>string</a> draws left to right, positioning the first <a href='undocumented#Glyph'>glyph</a> <a href='undocumented#Left_Side_Bearing'>left side bearing</a> at <a href='#SkCanvas_drawString_2_x'>x</a>
|
|
and its baseline at <a href='#SkCanvas_drawString_2_y'>y</a>. <a href='undocumented#Text'>Text</a> <a href='undocumented#Size'>size</a> is affected by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='undocumented#Text'>text</a> <a href='undocumented#Size'>size</a>.
|
|
|
|
All elements of <a href='#SkCanvas_drawString_2_paint'>paint</a>: <a href='undocumented#SkPathEffect'>SkPathEffect</a>, <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, <a href='undocumented#SkShader'>SkShader</a>,
|
|
<a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>; apply to <a href='undocumented#Text'>text</a>. By default, draws
|
|
filled 12 <a href='SkPoint_Reference#Point'>point</a> black <a href='undocumented#Glyph'>glyphs</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawString_2_string'><code><strong>string</strong></code></a></td>
|
|
<td>character code <a href='SkPoint_Reference#Point'>points</a> or <a href='undocumented#Glyph'>glyphs</a> drawn,</td>
|
|
</tr>
|
|
</table>
|
|
|
|
ending with a char value of zero
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawString_2_x'><code><strong>x</strong></code></a></td>
|
|
<td>start of <a href='#SkCanvas_drawString_2_string'>string</a> on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawString_2_y'><code><strong>y</strong></code></a></td>
|
|
<td>start of <a href='#SkCanvas_drawString_2_string'>string</a> on y-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawString_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='undocumented#Text'>text</a> <a href='undocumented#Size'>size</a>, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawString_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawText'>drawText</a> <a href='#SkCanvas_drawPosText'>drawPosText</a> <a href='#SkCanvas_drawPosTextH'>drawPosTextH</a> <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a> <a href='#SkCanvas_drawTextRSXform'>drawTextRSXform</a>
|
|
|
|
<a name='SkCanvas_drawPosText'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPosText'>drawPosText</a>(const void* <a href='undocumented#Text'>text</a>, size_t byteLength, const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> pos[], const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws each <a href='undocumented#Glyph'>glyph</a> in <a href='#SkCanvas_drawPosText_text'>text</a> with the origin in <a href='#SkCanvas_drawPosText_pos'>pos</a> array, using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPosText_paint'>paint</a>. The number of entries in <a href='#SkCanvas_drawPosText_pos'>pos</a> array must match the number of <a href='undocumented#Glyph'>glyphs</a>
|
|
described by <a href='#SkCanvas_drawPosText_byteLength'>byteLength</a> of <a href='#SkCanvas_drawPosText_text'>text</a>.
|
|
|
|
<a href='#SkCanvas_drawPosText_text'>text</a> meaning depends on <a href='undocumented#SkTextEncoding'>SkTextEncoding</a>; by default, <a href='#SkCanvas_drawPosText_text'>text</a> is encoded as
|
|
UTF-8. <a href='#SkCanvas_drawPosText_pos'>pos</a> elements meaning depends on <a href='SkPaint_Reference#SkPaint'>SkPaint</a> vertical <a href='#SkCanvas_drawPosText_text'>text</a>; by default
|
|
<a href='undocumented#Glyph'>glyph</a> <a href='undocumented#Left_Side_Bearing'>left side bearing</a> and baseline are relative to <a href='SkPoint_Reference#SkPoint'>SkPoint</a> in <a href='#SkCanvas_drawPosText_pos'>pos</a> array.
|
|
<a href='undocumented#Text'>Text</a> <a href='undocumented#Size'>size</a> is affected by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPosText_text'>text</a> <a href='undocumented#Size'>size</a>.
|
|
|
|
All elements of <a href='#SkCanvas_drawPosText_paint'>paint</a>: <a href='undocumented#SkPathEffect'>SkPathEffect</a>, <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, <a href='undocumented#SkShader'>SkShader</a>,
|
|
<a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>; apply to <a href='#SkCanvas_drawPosText_text'>text</a>. By default, draws
|
|
filled 12 <a href='SkPoint_Reference#Point'>point</a> black <a href='undocumented#Glyph'>glyphs</a>.
|
|
|
|
Layout engines such as Harfbuzz typically position each <a href='undocumented#Glyph'>glyph</a>
|
|
rather than using the <a href='SkFont_Reference#Font_Advance'>font advance</a> widths.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPosText_text'><code><strong>text</strong></code></a></td>
|
|
<td>character code <a href='SkPoint_Reference#Point'>points</a> or <a href='undocumented#Glyph'>glyphs</a> drawn</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPosText_byteLength'><code><strong>byteLength</strong></code></a></td>
|
|
<td>byte length of <a href='#SkCanvas_drawPosText_text'>text</a> array</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPosText_pos'><code><strong>pos</strong></code></a></td>
|
|
<td>array of <a href='undocumented#Glyph'>glyph</a> origins</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPosText_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawPosText_text'>text</a> <a href='undocumented#Size'>size</a>, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="bf0b2402533a23b6392e0676b7a8414c"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawText'>drawText</a> <a href='#SkCanvas_drawPosTextH'>drawPosTextH</a> <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a> <a href='#SkCanvas_drawTextRSXform'>drawTextRSXform</a>
|
|
|
|
<a name='SkCanvas_drawPosTextH'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPosTextH'>drawPosTextH</a>(const void* <a href='undocumented#Text'>text</a>, size_t byteLength, const <a href='undocumented#SkScalar'>SkScalar</a> xpos[], <a href='undocumented#SkScalar'>SkScalar</a> constY,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws each <a href='undocumented#Glyph'>glyph</a> in <a href='#SkCanvas_drawPosTextH_text'>text</a> with its origin composed from <a href='#SkCanvas_drawPosTextH_xpos'>xpos</a> array and
|
|
<a href='#SkCanvas_drawPosTextH_constY'>constY</a>, using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPosTextH_paint'>paint</a>. The number of entries in <a href='#SkCanvas_drawPosTextH_xpos'>xpos</a> array
|
|
must match the number of <a href='undocumented#Glyph'>glyphs</a> described by <a href='#SkCanvas_drawPosTextH_byteLength'>byteLength</a> of <a href='#SkCanvas_drawPosTextH_text'>text</a>.
|
|
|
|
<a href='#SkCanvas_drawPosTextH_text'>text</a> meaning depends on <a href='undocumented#SkTextEncoding'>SkTextEncoding</a>; by default, <a href='#SkCanvas_drawPosTextH_text'>text</a> is encoded as
|
|
UTF-8. <a href='#SkCanvas_drawPosTextH_xpos'>xpos</a> elements meaning depends on <a href='SkPaint_Reference#SkPaint'>SkPaint</a> vertical <a href='#SkCanvas_drawPosTextH_text'>text</a>;
|
|
by default each <a href='undocumented#Glyph'>glyph</a> <a href='undocumented#Left_Side_Bearing'>left side bearing</a> is positioned at an <a href='#SkCanvas_drawPosTextH_xpos'>xpos</a> element and
|
|
its baseline is positioned at <a href='#SkCanvas_drawPosTextH_constY'>constY</a>. <a href='undocumented#Text'>Text</a> <a href='undocumented#Size'>size</a> is affected by <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> and
|
|
<a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPosTextH_text'>text</a> <a href='undocumented#Size'>size</a>.
|
|
|
|
All elements of <a href='#SkCanvas_drawPosTextH_paint'>paint</a>: <a href='undocumented#SkPathEffect'>SkPathEffect</a>, <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, <a href='undocumented#SkShader'>SkShader</a>,
|
|
<a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>; apply to <a href='#SkCanvas_drawPosTextH_text'>text</a>. By default, draws
|
|
filled 12 <a href='SkPoint_Reference#Point'>point</a> black <a href='undocumented#Glyph'>glyphs</a>.
|
|
|
|
Layout engines such as Harfbuzz typically position each <a href='undocumented#Glyph'>glyph</a>
|
|
rather than using the <a href='SkFont_Reference#Font_Advance'>font advance</a> widths if all <a href='undocumented#Glyph'>glyphs</a> share the same
|
|
baseline.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPosTextH_text'><code><strong>text</strong></code></a></td>
|
|
<td>character code <a href='SkPoint_Reference#Point'>points</a> or <a href='undocumented#Glyph'>glyphs</a> drawn</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPosTextH_byteLength'><code><strong>byteLength</strong></code></a></td>
|
|
<td>byte length of <a href='#SkCanvas_drawPosTextH_text'>text</a> array</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPosTextH_xpos'><code><strong>xpos</strong></code></a></td>
|
|
<td>array of x-axis positions, used to position each <a href='undocumented#Glyph'>glyph</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPosTextH_constY'><code><strong>constY</strong></code></a></td>
|
|
<td>shared y-axis value for all of x-axis positions</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPosTextH_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawPosTextH_text'>text</a> <a href='undocumented#Size'>size</a>, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="95c6a7ef82993a8d2add676080e9438a"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawText'>drawText</a> <a href='#SkCanvas_drawPosText'>drawPosText</a> <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a> <a href='#SkCanvas_drawTextRSXform'>drawTextRSXform</a>
|
|
|
|
<a name='SkCanvas_drawTextRSXform'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawTextRSXform'>drawTextRSXform</a>(const void* <a href='undocumented#Text'>text</a>, size_t byteLength, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[],
|
|
const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='#SkCanvas_drawTextRSXform_text'>text</a>, transforming each <a href='undocumented#Glyph'>glyph</a> by the corresponding <a href='undocumented#SkRSXform'>SkRSXform</a>,
|
|
using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawTextRSXform_paint'>paint</a>.
|
|
|
|
<a href='undocumented#SkRSXform'>SkRSXform</a> <a href='#SkCanvas_drawTextRSXform_xform'>xform</a> array specifies a separate square scale, rotation, and translation
|
|
for each <a href='undocumented#Glyph'>glyph</a>. <a href='#SkCanvas_drawTextRSXform_xform'>xform</a> does not affect <a href='#SkCanvas_drawTextRSXform_paint'>paint</a> <a href='undocumented#SkShader'>SkShader</a>.
|
|
|
|
Optional <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawTextRSXform_cullRect'>cullRect</a> is a conservative bounds of <a href='#SkCanvas_drawTextRSXform_text'>text</a>, taking into account
|
|
<a href='undocumented#SkRSXform'>SkRSXform</a> and <a href='#SkCanvas_drawTextRSXform_paint'>paint</a>. If <a href='#SkCanvas_drawTextRSXform_cullRect'>cullRect</a> is outside of clip, <a href='SkCanvas_Reference#Canvas'>canvas</a> can skip drawing.
|
|
|
|
All elements of <a href='#SkCanvas_drawTextRSXform_paint'>paint</a>: <a href='undocumented#SkPathEffect'>SkPathEffect</a>, <a href='undocumented#SkMaskFilter'>SkMaskFilter</a>, <a href='undocumented#SkShader'>SkShader</a>,
|
|
<a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='undocumented#SkDrawLooper'>SkDrawLooper</a>; apply to <a href='#SkCanvas_drawTextRSXform_text'>text</a>. By default, draws
|
|
filled 12 <a href='SkPoint_Reference#Point'>point</a> black <a href='undocumented#Glyph'>glyphs</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawTextRSXform_text'><code><strong>text</strong></code></a></td>
|
|
<td>character code <a href='SkPoint_Reference#Point'>points</a> or <a href='undocumented#Glyph'>glyphs</a> drawn</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextRSXform_byteLength'><code><strong>byteLength</strong></code></a></td>
|
|
<td>byte length of <a href='#SkCanvas_drawTextRSXform_text'>text</a> array</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextRSXform_xform'><code><strong>xform</strong></code></a></td>
|
|
<td><a href='undocumented#SkRSXform'>SkRSXform</a> rotates, scales, and translates each <a href='undocumented#Glyph'>glyph</a> individually</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextRSXform_cullRect'><code><strong>cullRect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> bounds of <a href='#SkCanvas_drawTextRSXform_text'>text</a> for efficient clipping; or nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextRSXform_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='#SkCanvas_drawTextRSXform_text'>text</a> <a href='undocumented#Size'>size</a>, blend, <a href='SkColor_Reference#Color'>color</a>, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawTextRSXform"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawText'>drawText</a> <a href='#SkCanvas_drawPosText'>drawPosText</a> <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a>
|
|
|
|
<a name='SkCanvas_drawTextBlob'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a>(const <a href='SkTextBlob_Reference#SkTextBlob'>SkTextBlob</a>* blob, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='#Text_Blob'>Text_Blob</a> <a href='#SkCanvas_drawTextBlob_blob'>blob</a> at (<a href='#SkCanvas_drawTextBlob_x'>x</a>, <a href='#SkCanvas_drawTextBlob_y'>y</a>), using Clip, <a href='SkMatrix_Reference#Matrix'>Matrix</a>, and <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawTextBlob_paint'>paint</a>.
|
|
|
|
<a href='#SkCanvas_drawTextBlob_blob'>blob</a> contains <a href='undocumented#Glyph'>Glyphs</a>, their positions, and <a href='#SkCanvas_drawTextBlob_paint'>paint</a> attributes specific to <a href='undocumented#Text'>text</a>: <a href='undocumented#Typeface'>Typeface</a>, <a href='#Font_Size'>Font_Size</a>, <a href='#Font_Scale_X'>Font_Scale_X</a>,
|
|
<a href='#Font_Skew_X'>Font_Skew_X</a>, <a href='#Font_Hinting'>Font_Hinting</a>, <a href='#Paint_Anti_Alias'>Paint_Anti_Alias</a>, <a href='#Font_Embolden'>Font_Embolden</a>, <a href='#Font_Force_Hinting'>Font_Force_Hinting</a>,
|
|
<a href='#Font_Embedded_Bitmaps'>Font_Embedded_Bitmaps</a>, <a href='#Font_Hinting_Spacing'>Font_Hinting_Spacing</a>, <a href='#Font_Anti_Alias'>Font_Anti_Alias</a>, <a href='#Font_Linear'>Font_Linear</a>,
|
|
and <a href='#Font_Subpixel'>Font_Subpixel</a>
|
|
.
|
|
|
|
<a href='#Paint_Text_Encoding'>Paint_Text_Encoding</a> must be set to <a href='undocumented#SkTextEncoding::kGlyphID'>SkTextEncoding::kGlyphID</a>.
|
|
|
|
Elements of <a href='#SkCanvas_drawTextBlob_paint'>paint</a>: <a href='#Paint_Anti_Alias'>Anti_Alias</a>, <a href='#Blend_Mode'>Blend_Mode</a>, <a href='SkColor_Reference#Color'>Color</a> including <a href='#Color_Alpha'>Color_Alpha</a>,
|
|
<a href='#Color_Filter'>Color_Filter</a>, <a href='#Paint_Dither'>Paint_Dither</a>, <a href='#Draw_Looper'>Draw_Looper</a>, <a href='#Mask_Filter'>Mask_Filter</a>, <a href='#Path_Effect'>Path_Effect</a>, <a href='undocumented#Shader'>Shader</a>, and
|
|
<a href='#Paint_Style'>Paint_Style</a>; apply to <a href='#SkCanvas_drawTextBlob_blob'>blob</a>. If <a href='SkPaint_Reference#Paint'>Paint</a> contains <a href='SkPaint_Reference#SkPaint'>SkPaint</a>::<a href='#SkPaint_kStroke_Style'>kStroke_Style</a>:
|
|
<a href='#Paint_Miter_Limit'>Paint_Miter_Limit</a>, <a href='#Paint_Stroke_Cap'>Paint_Stroke_Cap</a>, <a href='#Paint_Stroke_Join'>Paint_Stroke_Join</a>, and <a href='#Paint_Stroke_Width'>Paint_Stroke_Width</a>;
|
|
apply to <a href='SkPath_Reference#Path'>Path</a> created from <a href='#SkCanvas_drawTextBlob_blob'>blob</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawTextBlob_blob'><code><strong>blob</strong></code></a></td>
|
|
<td><a href='undocumented#Glyph'>Glyphs</a>, positions, and their paints' <a href='undocumented#Text'>text</a> <a href='undocumented#Size'>size</a>, <a href='undocumented#Typeface'>typeface</a>, and so on</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextBlob_x'><code><strong>x</strong></code></a></td>
|
|
<td>horizontal offset applied to <a href='#SkCanvas_drawTextBlob_blob'>blob</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextBlob_y'><code><strong>y</strong></code></a></td>
|
|
<td>vertical offset applied to <a href='#SkCanvas_drawTextBlob_blob'>blob</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextBlob_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>blend, <a href='SkColor_Reference#Color'>color</a>, stroking, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="005502b502c1282cb8d306d6c8d998fb"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawText'>drawText</a> <a href='#SkCanvas_drawPosText'>drawPosText</a> <a href='#SkCanvas_drawPosTextH'>drawPosTextH</a>
|
|
|
|
<a name='SkCanvas_drawTextBlob_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkTextBlob_Reference#SkTextBlob'>SkTextBlob</a>>& blob, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='#Text_Blob'>Text_Blob</a> <a href='#SkCanvas_drawTextBlob_2_blob'>blob</a> at (<a href='#SkCanvas_drawTextBlob_2_x'>x</a>, <a href='#SkCanvas_drawTextBlob_2_y'>y</a>), using Clip, <a href='SkMatrix_Reference#Matrix'>Matrix</a>, and <a href='SkPaint_Reference#Paint'>Paint</a> <a href='#SkCanvas_drawTextBlob_2_paint'>paint</a>.
|
|
|
|
<a href='#SkCanvas_drawTextBlob_2_blob'>blob</a> contains <a href='undocumented#Glyph'>Glyphs</a>, their positions, and <a href='#SkCanvas_drawTextBlob_2_paint'>paint</a> attributes specific to <a href='undocumented#Text'>text</a>: <a href='undocumented#Typeface'>Typeface</a>, <a href='#Font_Size'>Font_Size</a>, <a href='#Font_Scale_X'>Font_Scale_X</a>,
|
|
<a href='#Font_Skew_X'>Font_Skew_X</a>, <a href='#Font_Hinting'>Font_Hinting</a>, <a href='#Paint_Anti_Alias'>Paint_Anti_Alias</a>, <a href='#Font_Embolden'>Font_Embolden</a>, <a href='#Font_Force_Hinting'>Font_Force_Hinting</a>,
|
|
<a href='#Font_Embedded_Bitmaps'>Font_Embedded_Bitmaps</a>, <a href='#Font_Hinting_Spacing'>Font_Hinting_Spacing</a>, <a href='#Font_Anti_Alias'>Font_Anti_Alias</a>, <a href='#Font_Linear'>Font_Linear</a>,
|
|
and <a href='#Font_Subpixel'>Font_Subpixel</a>
|
|
.
|
|
|
|
<a href='#Paint_Text_Encoding'>Paint_Text_Encoding</a> must be set to <a href='undocumented#SkTextEncoding::kGlyphID'>SkTextEncoding::kGlyphID</a>.
|
|
|
|
Elements of <a href='#SkCanvas_drawTextBlob_2_paint'>paint</a>: <a href='#Path_Effect'>Path_Effect</a>, <a href='#Mask_Filter'>Mask_Filter</a>, <a href='undocumented#Shader'>Shader</a>, <a href='#Color_Filter'>Color_Filter</a>,
|
|
<a href='#Image_Filter'>Image_Filter</a>, and <a href='#Draw_Looper'>Draw_Looper</a>; apply to <a href='#SkCanvas_drawTextBlob_2_blob'>blob</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawTextBlob_2_blob'><code><strong>blob</strong></code></a></td>
|
|
<td><a href='undocumented#Glyph'>Glyphs</a>, positions, and their paints' <a href='undocumented#Text'>text</a> <a href='undocumented#Size'>size</a>, <a href='undocumented#Typeface'>typeface</a>, and so on</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextBlob_2_x'><code><strong>x</strong></code></a></td>
|
|
<td>horizontal offset applied to <a href='#SkCanvas_drawTextBlob_2_blob'>blob</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextBlob_2_y'><code><strong>y</strong></code></a></td>
|
|
<td>vertical offset applied to <a href='#SkCanvas_drawTextBlob_2_blob'>blob</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawTextBlob_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>blend, <a href='SkColor_Reference#Color'>color</a>, stroking, and so on, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawTextBlob_2"><div><a href='SkPaint_Reference#Paint'>Paint</a> attributes related to <a href='undocumented#Text'>text</a>, like <a href='undocumented#Text'>text</a> <a href='undocumented#Size'>size</a>, have no effect on <a href='#SkCanvas_drawTextBlob_2_paint'>paint</a> passed to <a href='#SkCanvas_drawTextBlob'>drawTextBlob</a>.
|
|
</div></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawText'>drawText</a> <a href='#SkCanvas_drawPosText'>drawPosText</a> <a href='#SkCanvas_drawPosTextH'>drawPosTextH</a>
|
|
|
|
<a name='SkCanvas_drawPicture'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPicture'>drawPicture</a>(const <a href='SkPicture_Reference#SkPicture'>SkPicture</a>* <a href='SkPicture_Reference#Picture'>picture</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='#SkCanvas_drawPicture_picture'>picture</a>, using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
Clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> are unchanged by <a href='#SkCanvas_drawPicture_picture'>picture</a> contents, as if
|
|
<a href='#SkCanvas_save'>save()</a> was called before and <a href='#SkCanvas_restore'>restore()</a> was called after <a href='#SkCanvas_drawPicture'>drawPicture</a>().
|
|
|
|
<a href='SkPicture_Reference#SkPicture'>SkPicture</a> records a series of draw commands for later playback.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPicture_picture'><code><strong>picture</strong></code></a></td>
|
|
<td>recorded drawing commands to play</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPicture_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawDrawable'>drawDrawable</a> <a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='SkPicture_Reference#SkPicture'>SkPicture</a>::<a href='#SkPicture_playback'>playback</a>
|
|
|
|
<a name='SkCanvas_drawPicture_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPicture'>drawPicture</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkPicture_Reference#SkPicture'>SkPicture</a>>& <a href='SkPicture_Reference#Picture'>picture</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='#SkCanvas_drawPicture_2_picture'>picture</a>, using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
Clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> are unchanged by <a href='#SkCanvas_drawPicture_2_picture'>picture</a> contents, as if
|
|
<a href='#SkCanvas_save'>save()</a> was called before and <a href='#SkCanvas_restore'>restore()</a> was called after <a href='#SkCanvas_drawPicture'>drawPicture</a>().
|
|
|
|
<a href='SkPicture_Reference#SkPicture'>SkPicture</a> records a series of draw commands for later playback.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPicture_2_picture'><code><strong>picture</strong></code></a></td>
|
|
<td>recorded drawing commands to play</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPicture_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawDrawable'>drawDrawable</a> <a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='SkPicture_Reference#SkPicture'>SkPicture</a>::<a href='#SkPicture_playback'>playback</a>
|
|
|
|
<a name='SkCanvas_drawPicture_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPicture'>drawPicture</a>(const <a href='SkPicture_Reference#SkPicture'>SkPicture</a>* <a href='SkPicture_Reference#Picture'>picture</a>, const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>* <a href='SkMatrix_Reference#Matrix'>matrix</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='#SkCanvas_drawPicture_3_picture'>picture</a>, using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>; transforming <a href='#SkCanvas_drawPicture_3_picture'>picture</a> with
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> <a href='#SkCanvas_drawPicture_3_matrix'>matrix</a>, if provided; and use <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPicture_3_paint'>paint alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>,
|
|
<a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, if provided.
|
|
|
|
<a href='#SkCanvas_drawPicture_3_matrix'>matrix</a> transformation is equivalent to: <a href='#SkCanvas_save'>save()</a>, <a href='#SkCanvas_concat'>concat()</a>, <a href='#SkCanvas_drawPicture'>drawPicture</a>(), <a href='#SkCanvas_restore'>restore()</a>.
|
|
<a href='#SkCanvas_drawPicture_3_paint'>paint</a> use is equivalent to: <a href='#SkCanvas_saveLayer'>saveLayer</a>(), <a href='#SkCanvas_drawPicture'>drawPicture</a>(), <a href='#SkCanvas_restore'>restore()</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPicture_3_picture'><code><strong>picture</strong></code></a></td>
|
|
<td>recorded drawing commands to play</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPicture_3_matrix'><code><strong>matrix</strong></code></a></td>
|
|
<td><a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> to rotate, scale, translate, and so on; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPicture_3_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> to apply transparency, filtering, and so on; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPicture_3"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawDrawable'>drawDrawable</a> <a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='SkPicture_Reference#SkPicture'>SkPicture</a>::<a href='#SkPicture_playback'>playback</a>
|
|
|
|
<a name='SkCanvas_drawPicture_4'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPicture'>drawPicture</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkPicture_Reference#SkPicture'>SkPicture</a>>& <a href='SkPicture_Reference#Picture'>picture</a>, const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>* <a href='SkMatrix_Reference#Matrix'>matrix</a>, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='#SkCanvas_drawPicture_4_picture'>picture</a>, using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>; transforming <a href='#SkCanvas_drawPicture_4_picture'>picture</a> with
|
|
<a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> <a href='#SkCanvas_drawPicture_4_matrix'>matrix</a>, if provided; and use <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawPicture_4_paint'>paint alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>,
|
|
<a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, if provided.
|
|
|
|
<a href='#SkCanvas_drawPicture_4_matrix'>matrix</a> transformation is equivalent to: <a href='#SkCanvas_save'>save()</a>, <a href='#SkCanvas_concat'>concat()</a>, <a href='#SkCanvas_drawPicture'>drawPicture</a>(), <a href='#SkCanvas_restore'>restore()</a>.
|
|
<a href='#SkCanvas_drawPicture_4_paint'>paint</a> use is equivalent to: <a href='#SkCanvas_saveLayer'>saveLayer</a>(), <a href='#SkCanvas_drawPicture'>drawPicture</a>(), <a href='#SkCanvas_restore'>restore()</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPicture_4_picture'><code><strong>picture</strong></code></a></td>
|
|
<td>recorded drawing commands to play</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPicture_4_matrix'><code><strong>matrix</strong></code></a></td>
|
|
<td><a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a> to rotate, scale, translate, and so on; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPicture_4_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='SkPaint_Reference#SkPaint'>SkPaint</a> to apply transparency, filtering, and so on; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPicture_4"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawDrawable'>drawDrawable</a> <a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='SkPicture_Reference#SkPicture'>SkPicture</a>::<a href='#SkPicture_playback'>playback</a>
|
|
|
|
<a name='SkCanvas_drawVertices'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawVertices'>drawVertices</a>(const <a href='undocumented#SkVertices'>SkVertices</a>* <a href='undocumented#Vertices'>vertices</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#SkVertices'>SkVertices</a> <a href='#SkCanvas_drawVertices_vertices'>vertices</a>, a triangle mesh, using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
If <a href='undocumented#Vertices_Texs'>vertices texs</a> and <a href='undocumented#Vertices_Colors'>vertices colors</a> are defined in <a href='#SkCanvas_drawVertices_vertices'>vertices</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawVertices_paint'>paint</a>
|
|
contains <a href='undocumented#SkShader'>SkShader</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> <a href='#SkCanvas_drawVertices_mode'>mode</a> combines <a href='undocumented#Vertices_Colors'>vertices colors</a> with <a href='undocumented#SkShader'>SkShader</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawVertices_vertices'><code><strong>vertices</strong></code></a></td>
|
|
<td>triangle mesh to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_mode'><code><strong>mode</strong></code></a></td>
|
|
<td>combines <a href='undocumented#Vertices_Colors'>vertices colors</a> with <a href='undocumented#SkShader'>SkShader</a>, if both are present</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>specifies the <a href='undocumented#SkShader'>SkShader</a>, used as <a href='undocumented#SkVertices'>SkVertices</a> <a href='undocumented#Texture'>texture</a>; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawVertices"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawPatch'>drawPatch</a> <a href='#SkCanvas_drawPicture'>drawPicture</a>
|
|
|
|
<a name='SkCanvas_drawVertices_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawVertices'>drawVertices</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='undocumented#SkVertices'>SkVertices</a>>& <a href='undocumented#Vertices'>vertices</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#SkVertices'>SkVertices</a> <a href='#SkCanvas_drawVertices_2_vertices'>vertices</a>, a triangle mesh, using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>.
|
|
If <a href='undocumented#Vertices_Texs'>vertices texs</a> and <a href='undocumented#Vertices_Colors'>vertices colors</a> are defined in <a href='#SkCanvas_drawVertices_2_vertices'>vertices</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawVertices_2_paint'>paint</a>
|
|
contains <a href='undocumented#SkShader'>SkShader</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> <a href='#SkCanvas_drawVertices_2_mode'>mode</a> combines <a href='undocumented#Vertices_Colors'>vertices colors</a> with <a href='undocumented#SkShader'>SkShader</a>.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawVertices_2_vertices'><code><strong>vertices</strong></code></a></td>
|
|
<td>triangle mesh to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_2_mode'><code><strong>mode</strong></code></a></td>
|
|
<td>combines <a href='undocumented#Vertices_Colors'>vertices colors</a> with <a href='undocumented#SkShader'>SkShader</a>, if both are present</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>specifies the <a href='undocumented#SkShader'>SkShader</a>, used as <a href='undocumented#SkVertices'>SkVertices</a> <a href='undocumented#Texture'>texture</a>, may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawVertices_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawPatch'>drawPatch</a> <a href='#SkCanvas_drawPicture'>drawPicture</a>
|
|
|
|
<a name='SkCanvas_drawVertices_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawVertices'>drawVertices</a>(const <a href='undocumented#SkVertices'>SkVertices</a>* <a href='undocumented#Vertices'>vertices</a>, const <a href='undocumented#SkVertices'>SkVertices</a>::<a href='#SkVertices_Bone'>Bone</a> bones[], int boneCount,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#SkVertices'>SkVertices</a> <a href='#SkCanvas_drawVertices_3_vertices'>vertices</a>, a triangle mesh, using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>. Bone <a href='undocumented#Data'>data</a> is used to
|
|
deform <a href='#SkCanvas_drawVertices_3_vertices'>vertices</a> with bone <a href='SkPath_Reference#Conic_Weight'>weights</a>.
|
|
If <a href='undocumented#Vertices_Texs'>vertices texs</a> and <a href='undocumented#Vertices_Colors'>vertices colors</a> are defined in <a href='#SkCanvas_drawVertices_3_vertices'>vertices</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawVertices_3_paint'>paint</a>
|
|
contains <a href='undocumented#SkShader'>SkShader</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> <a href='#SkCanvas_drawVertices_3_mode'>mode</a> combines <a href='undocumented#Vertices_Colors'>vertices colors</a> with <a href='undocumented#SkShader'>SkShader</a>.
|
|
The first element of <a href='#SkCanvas_drawVertices_3_bones'>bones</a> should be an object to world space transformation <a href='SkMatrix_Reference#Matrix'>matrix</a> that
|
|
will be applied before performing mesh deformations. If no such transformation is needed,
|
|
it should be the identity <a href='SkMatrix_Reference#Matrix'>matrix</a>.
|
|
<a href='#SkCanvas_drawVertices_3_boneCount'>boneCount</a> must be at most 80, and thus the <a href='undocumented#Size'>size</a> of <a href='#SkCanvas_drawVertices_3_bones'>bones</a> should be at most 80.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawVertices_3_vertices'><code><strong>vertices</strong></code></a></td>
|
|
<td>triangle mesh to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_3_bones'><code><strong>bones</strong></code></a></td>
|
|
<td>bone <a href='SkMatrix_Reference#Matrix'>matrix</a> <a href='undocumented#Data'>data</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_3_boneCount'><code><strong>boneCount</strong></code></a></td>
|
|
<td>number of bone <a href='SkMatrix_Reference#Matrix'>matrices</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_3_mode'><code><strong>mode</strong></code></a></td>
|
|
<td>combines <a href='undocumented#Vertices_Colors'>vertices colors</a> with <a href='undocumented#SkShader'>SkShader</a>, if both are present</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_3_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>specifies the <a href='undocumented#SkShader'>SkShader</a>, used as <a href='undocumented#SkVertices'>SkVertices</a> <a href='undocumented#Texture'>texture</a>, may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawPatch'>drawPatch</a> <a href='#SkCanvas_drawPicture'>drawPicture</a>
|
|
|
|
<a name='SkCanvas_drawVertices_4'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawVertices'>drawVertices</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='undocumented#SkVertices'>SkVertices</a>>& <a href='undocumented#Vertices'>vertices</a>, const <a href='undocumented#SkVertices'>SkVertices</a>::<a href='#SkVertices_Bone'>Bone</a> bones[], int boneCount,
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#SkVertices'>SkVertices</a> <a href='#SkCanvas_drawVertices_4_vertices'>vertices</a>, a triangle mesh, using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>. Bone <a href='undocumented#Data'>data</a> is used to
|
|
deform <a href='#SkCanvas_drawVertices_4_vertices'>vertices</a> with bone <a href='SkPath_Reference#Conic_Weight'>weights</a>.
|
|
If <a href='undocumented#Vertices_Texs'>vertices texs</a> and <a href='undocumented#Vertices_Colors'>vertices colors</a> are defined in <a href='#SkCanvas_drawVertices_4_vertices'>vertices</a>, and <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawVertices_4_paint'>paint</a>
|
|
contains <a href='undocumented#SkShader'>SkShader</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> <a href='#SkCanvas_drawVertices_4_mode'>mode</a> combines <a href='undocumented#Vertices_Colors'>vertices colors</a> with <a href='undocumented#SkShader'>SkShader</a>.
|
|
The first element of <a href='#SkCanvas_drawVertices_4_bones'>bones</a> should be an object to world space transformation <a href='SkMatrix_Reference#Matrix'>matrix</a> that
|
|
will be applied before performing mesh deformations. If no such transformation is needed,
|
|
it should be the identity <a href='SkMatrix_Reference#Matrix'>matrix</a>.
|
|
<a href='#SkCanvas_drawVertices_4_boneCount'>boneCount</a> must be at most 80, and thus the <a href='undocumented#Size'>size</a> of <a href='#SkCanvas_drawVertices_4_bones'>bones</a> should be at most 80.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawVertices_4_vertices'><code><strong>vertices</strong></code></a></td>
|
|
<td>triangle mesh to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_4_bones'><code><strong>bones</strong></code></a></td>
|
|
<td>bone <a href='SkMatrix_Reference#Matrix'>matrix</a> <a href='undocumented#Data'>data</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_4_boneCount'><code><strong>boneCount</strong></code></a></td>
|
|
<td>number of bone <a href='SkMatrix_Reference#Matrix'>matrices</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_4_mode'><code><strong>mode</strong></code></a></td>
|
|
<td>combines <a href='undocumented#Vertices_Colors'>vertices colors</a> with <a href='undocumented#SkShader'>SkShader</a>, if both are present</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawVertices_4_paint'><code><strong>paint</strong></code></a></td>
|
|
<td>specifies the <a href='undocumented#SkShader'>SkShader</a>, used as <a href='undocumented#SkVertices'>SkVertices</a> <a href='undocumented#Texture'>texture</a>, may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawPatch'>drawPatch</a> <a href='#SkCanvas_drawPicture'>drawPicture</a>
|
|
|
|
<a name='SkCanvas_drawPatch'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPatch'>drawPatch</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> <a href='SkPath_Reference#Cubic'>cubics</a>[12], const <a href='SkColor_Reference#SkColor'>SkColor</a> colors[4], const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> texCoords[4],
|
|
<a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws a <a href='undocumented#Coons_Patch'>Coons patch</a>: the interpolation of four <a href='#SkCanvas_drawPatch_cubics'>cubics</a> with shared corners,
|
|
associating a <a href='SkColor_Reference#Color'>color</a>, and optionally a <a href='undocumented#Texture'>texture</a> <a href='SkPoint_Reference#SkPoint'>SkPoint</a>, with each corner.
|
|
|
|
<a href='undocumented#Coons_Patch'>Coons patch</a> uses clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, <a href='#SkCanvas_drawPatch_paint'>paint</a> <a href='undocumented#SkShader'>SkShader</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>,
|
|
<a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>. If <a href='undocumented#SkShader'>SkShader</a> is provided it is treated
|
|
as <a href='undocumented#Coons_Patch'>Coons patch</a> <a href='undocumented#Texture'>texture</a>; <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> <a href='#SkCanvas_drawPatch_mode'>mode</a> combines <a href='SkColor_Reference#Color'>color</a> <a href='#SkCanvas_drawPatch_colors'>colors</a> and <a href='undocumented#SkShader'>SkShader</a> if
|
|
both are provided.
|
|
|
|
<a href='SkPath_Reference#Point_Array'>SkPoint array</a> <a href='#SkCanvas_drawPatch_cubics'>cubics</a> specifies four <a href='SkPath_Reference#SkPath'>SkPath</a> <a href='SkPath_Reference#Cubic'>cubic</a> starting at the top-left corner,
|
|
in clockwise order, sharing every fourth <a href='SkPoint_Reference#Point'>point</a>. The last <a href='SkPath_Reference#SkPath'>SkPath</a> <a href='SkPath_Reference#Cubic'>cubic</a> ends at the
|
|
first <a href='SkPoint_Reference#Point'>point</a>.
|
|
|
|
<a href='SkColor_Reference#Color'>Color</a> array <a href='SkColor_Reference#Color'>color</a> associates <a href='#SkCanvas_drawPatch_colors'>colors</a> with corners in top-left, top-right,
|
|
bottom-right, bottom-left order.
|
|
|
|
If <a href='#SkCanvas_drawPatch_paint'>paint</a> contains <a href='undocumented#SkShader'>SkShader</a>, <a href='SkPath_Reference#Point_Array'>SkPoint array</a> <a href='#SkCanvas_drawPatch_texCoords'>texCoords</a> maps <a href='undocumented#SkShader'>SkShader</a> as <a href='undocumented#Texture'>texture</a> to
|
|
corners in top-left, top-right, bottom-right, bottom-left order.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPatch_cubics'><code><strong>cubics</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#SkPath'>SkPath</a> <a href='SkPath_Reference#Cubic'>cubic</a> array, sharing common <a href='SkPoint_Reference#Point'>points</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPatch_colors'><code><strong>colors</strong></code></a></td>
|
|
<td><a href='SkColor_Reference#Color'>color</a> array, one for each corner</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPatch_texCoords'><code><strong>texCoords</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#Point_Array'>SkPoint array</a> of <a href='undocumented#Texture'>texture</a> coordinates, mapping <a href='undocumented#SkShader'>SkShader</a> to corners;</td>
|
|
</tr>
|
|
</table>
|
|
|
|
may be nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPatch_mode'><code><strong>mode</strong></code></a></td>
|
|
<td><a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> for <a href='#SkCanvas_drawPatch_colors'>colors</a>, and for <a href='undocumented#SkShader'>SkShader</a> if <a href='#SkCanvas_drawPatch_paint'>paint</a> has one</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPatch_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='undocumented#SkShader'>SkShader</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPatch"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawVertices'>drawVertices</a> <a href='#SkCanvas_drawPicture'>drawPicture</a>
|
|
|
|
<a name='SkCanvas_drawPatch_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawPatch'>drawPatch</a>(const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> <a href='SkPath_Reference#Cubic'>cubics</a>[12], const <a href='SkColor_Reference#SkColor'>SkColor</a> colors[4], const <a href='SkPoint_Reference#SkPoint'>SkPoint</a> texCoords[4],
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>& <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws <a href='SkPath_Reference#SkPath'>SkPath</a> <a href='SkPath_Reference#Cubic'>cubic</a> <a href='undocumented#Coons_Patch'>Coons patch</a>: the interpolation of four <a href='#SkCanvas_drawPatch_2_cubics'>cubics</a> with shared corners,
|
|
associating a <a href='SkColor_Reference#Color'>color</a>, and optionally a <a href='undocumented#Texture'>texture</a> <a href='SkPoint_Reference#SkPoint'>SkPoint</a>, with each corner.
|
|
|
|
<a href='undocumented#Coons_Patch'>Coons patch</a> uses clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, <a href='#SkCanvas_drawPatch_2_paint'>paint</a> <a href='undocumented#SkShader'>SkShader</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>,
|
|
<a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>. If <a href='undocumented#SkShader'>SkShader</a> is provided it is treated
|
|
as <a href='undocumented#Coons_Patch'>Coons patch</a> <a href='undocumented#Texture'>texture</a>; <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode combines <a href='SkColor_Reference#Color'>color</a> <a href='#SkCanvas_drawPatch_2_colors'>colors</a> and <a href='undocumented#SkShader'>SkShader</a> if
|
|
both are provided.
|
|
|
|
<a href='SkPath_Reference#Point_Array'>SkPoint array</a> <a href='#SkCanvas_drawPatch_2_cubics'>cubics</a> specifies four <a href='SkPath_Reference#SkPath'>SkPath</a> <a href='SkPath_Reference#Cubic'>cubic</a> starting at the top-left corner,
|
|
in clockwise order, sharing every fourth <a href='SkPoint_Reference#Point'>point</a>. The last <a href='SkPath_Reference#SkPath'>SkPath</a> <a href='SkPath_Reference#Cubic'>cubic</a> ends at the
|
|
first <a href='SkPoint_Reference#Point'>point</a>.
|
|
|
|
<a href='SkColor_Reference#Color'>Color</a> array <a href='SkColor_Reference#Color'>color</a> associates <a href='#SkCanvas_drawPatch_2_colors'>colors</a> with corners in top-left, top-right,
|
|
bottom-right, bottom-left order.
|
|
|
|
If <a href='#SkCanvas_drawPatch_2_paint'>paint</a> contains <a href='undocumented#SkShader'>SkShader</a>, <a href='SkPath_Reference#Point_Array'>SkPoint array</a> <a href='#SkCanvas_drawPatch_2_texCoords'>texCoords</a> maps <a href='undocumented#SkShader'>SkShader</a> as <a href='undocumented#Texture'>texture</a> to
|
|
corners in top-left, top-right, bottom-right, bottom-left order.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPatch_2_cubics'><code><strong>cubics</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#SkPath'>SkPath</a> <a href='SkPath_Reference#Cubic'>cubic</a> array, sharing common <a href='SkPoint_Reference#Point'>points</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPatch_2_colors'><code><strong>colors</strong></code></a></td>
|
|
<td><a href='SkColor_Reference#Color'>color</a> array, one for each corner</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawPatch_2_texCoords'><code><strong>texCoords</strong></code></a></td>
|
|
<td><a href='SkPath_Reference#Point_Array'>SkPoint array</a> of <a href='undocumented#Texture'>texture</a> coordinates, mapping <a href='undocumented#SkShader'>SkShader</a> to corners;</td>
|
|
</tr>
|
|
</table>
|
|
|
|
may be nullptr
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawPatch_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='undocumented#SkShader'>SkShader</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, used to draw</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="4e8b7409531c9211a2afcf632005a38c"></fiddle-embed></div>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawPatch_2_b"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawVertices'>drawVertices</a> <a href='#SkCanvas_drawPicture'>drawPicture</a>
|
|
|
|
<a name='SkCanvas_drawAtlas'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawAtlas'>drawAtlas</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* atlas, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[], const <a href='SkRect_Reference#SkRect'>SkRect</a> tex[],
|
|
const <a href='SkColor_Reference#SkColor'>SkColor</a> colors[], int count, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws a set of <a href='undocumented#Sprite'>sprites</a> from <a href='#SkCanvas_drawAtlas_atlas'>atlas</a>, using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawAtlas_paint'>paint</a>.
|
|
<a href='#SkCanvas_drawAtlas_paint'>paint</a> uses <a href='SkPaint_Reference#Anti_Alias'>anti-alias</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>
|
|
to draw, if present. For each entry in the array, <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawAtlas_tex'>tex</a> locates <a href='undocumented#Sprite'>sprite</a> in
|
|
<a href='#SkCanvas_drawAtlas_atlas'>atlas</a>, and <a href='undocumented#SkRSXform'>SkRSXform</a> <a href='#SkCanvas_drawAtlas_xform'>xform</a> transforms it into destination space.
|
|
|
|
<a href='#SkCanvas_drawAtlas_xform'>xform</a>, <a href='undocumented#Text'>text</a>, and <a href='#SkCanvas_drawAtlas_colors'>colors</a> if present, must contain <a href='#SkCanvas_drawAtlas_count'>count</a> entries.
|
|
Optional <a href='#SkCanvas_drawAtlas_colors'>colors</a> are applied for each <a href='undocumented#Sprite'>sprite</a> using <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> <a href='#SkCanvas_drawAtlas_mode'>mode</a>, treating
|
|
<a href='undocumented#Sprite'>sprite</a> as source and <a href='#SkCanvas_drawAtlas_colors'>colors</a> as destination.
|
|
Optional <a href='#SkCanvas_drawAtlas_cullRect'>cullRect</a> is a conservative bounds of all transformed <a href='undocumented#Sprite'>sprites</a>.
|
|
If <a href='#SkCanvas_drawAtlas_cullRect'>cullRect</a> is outside of clip, <a href='SkCanvas_Reference#Canvas'>canvas</a> can skip drawing.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawAtlas_atlas'><code><strong>atlas</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing <a href='undocumented#Sprite'>sprites</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_xform'><code><strong>xform</strong></code></a></td>
|
|
<td><a href='undocumented#SkRSXform'>SkRSXform</a> mappings for <a href='undocumented#Sprite'>sprites</a> in <a href='#SkCanvas_drawAtlas_atlas'>atlas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_tex'><code><strong>tex</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> locations of <a href='undocumented#Sprite'>sprites</a> in <a href='#SkCanvas_drawAtlas_atlas'>atlas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_colors'><code><strong>colors</strong></code></a></td>
|
|
<td>one per <a href='undocumented#Sprite'>sprite</a>, blended with <a href='undocumented#Sprite'>sprite</a> using <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_count'><code><strong>count</strong></code></a></td>
|
|
<td>number of <a href='undocumented#Sprite'>sprites</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_mode'><code><strong>mode</strong></code></a></td>
|
|
<td><a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> combining <a href='#SkCanvas_drawAtlas_colors'>colors</a> and <a href='undocumented#Sprite'>sprites</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_cullRect'><code><strong>cullRect</strong></code></a></td>
|
|
<td>bounds of transformed <a href='undocumented#Sprite'>sprites</a> for efficient clipping; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and so on; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawAtlas"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a>
|
|
|
|
<a name='SkCanvas_drawAtlas_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawAtlas'>drawAtlas</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& atlas, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[], const <a href='SkRect_Reference#SkRect'>SkRect</a> tex[],
|
|
const <a href='SkColor_Reference#SkColor'>SkColor</a> colors[], int count, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> mode, const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect,
|
|
const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws a set of <a href='undocumented#Sprite'>sprites</a> from <a href='#SkCanvas_drawAtlas_2_atlas'>atlas</a>, using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawAtlas_2_paint'>paint</a>.
|
|
<a href='#SkCanvas_drawAtlas_2_paint'>paint</a> uses <a href='SkPaint_Reference#Anti_Alias'>anti-alias</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>
|
|
to draw, if present. For each entry in the array, <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawAtlas_2_tex'>tex</a> locates <a href='undocumented#Sprite'>sprite</a> in
|
|
<a href='#SkCanvas_drawAtlas_2_atlas'>atlas</a>, and <a href='undocumented#SkRSXform'>SkRSXform</a> <a href='#SkCanvas_drawAtlas_2_xform'>xform</a> transforms it into destination space.
|
|
|
|
<a href='#SkCanvas_drawAtlas_2_xform'>xform</a>, <a href='undocumented#Text'>text</a>, and <a href='#SkCanvas_drawAtlas_2_colors'>colors</a> if present, must contain <a href='#SkCanvas_drawAtlas_2_count'>count</a> entries.
|
|
Optional <a href='#SkCanvas_drawAtlas_2_colors'>colors</a> is applied for each <a href='undocumented#Sprite'>sprite</a> using <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>.
|
|
Optional <a href='#SkCanvas_drawAtlas_2_cullRect'>cullRect</a> is a conservative bounds of all transformed <a href='undocumented#Sprite'>sprites</a>.
|
|
If <a href='#SkCanvas_drawAtlas_2_cullRect'>cullRect</a> is outside of clip, <a href='SkCanvas_Reference#Canvas'>canvas</a> can skip drawing.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawAtlas_2_atlas'><code><strong>atlas</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing <a href='undocumented#Sprite'>sprites</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_2_xform'><code><strong>xform</strong></code></a></td>
|
|
<td><a href='undocumented#SkRSXform'>SkRSXform</a> mappings for <a href='undocumented#Sprite'>sprites</a> in <a href='#SkCanvas_drawAtlas_2_atlas'>atlas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_2_tex'><code><strong>tex</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> locations of <a href='undocumented#Sprite'>sprites</a> in <a href='#SkCanvas_drawAtlas_2_atlas'>atlas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_2_colors'><code><strong>colors</strong></code></a></td>
|
|
<td>one per <a href='undocumented#Sprite'>sprite</a>, blended with <a href='undocumented#Sprite'>sprite</a> using <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_2_count'><code><strong>count</strong></code></a></td>
|
|
<td>number of <a href='undocumented#Sprite'>sprites</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_2_mode'><code><strong>mode</strong></code></a></td>
|
|
<td><a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a> combining <a href='#SkCanvas_drawAtlas_2_colors'>colors</a> and <a href='undocumented#Sprite'>sprites</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_2_cullRect'><code><strong>cullRect</strong></code></a></td>
|
|
<td>bounds of transformed <a href='undocumented#Sprite'>sprites</a> for efficient clipping; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_2_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and so on; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawAtlas_2"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a>
|
|
|
|
<a name='SkCanvas_drawAtlas_3'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawAtlas'>drawAtlas</a>(const <a href='SkImage_Reference#SkImage'>SkImage</a>* atlas, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[], const <a href='SkRect_Reference#SkRect'>SkRect</a> tex[], int count,
|
|
const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws a set of <a href='undocumented#Sprite'>sprites</a> from <a href='#SkCanvas_drawAtlas_3_atlas'>atlas</a>, using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawAtlas_3_paint'>paint</a>.
|
|
<a href='#SkCanvas_drawAtlas_3_paint'>paint</a> uses <a href='SkPaint_Reference#Anti_Alias'>anti-alias</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>
|
|
to draw, if present. For each entry in the array, <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawAtlas_3_tex'>tex</a> locates <a href='undocumented#Sprite'>sprite</a> in
|
|
<a href='#SkCanvas_drawAtlas_3_atlas'>atlas</a>, and <a href='undocumented#SkRSXform'>SkRSXform</a> <a href='#SkCanvas_drawAtlas_3_xform'>xform</a> transforms it into destination space.
|
|
|
|
<a href='#SkCanvas_drawAtlas_3_xform'>xform</a> and <a href='undocumented#Text'>text</a> must contain <a href='#SkCanvas_drawAtlas_3_count'>count</a> entries.
|
|
Optional <a href='#SkCanvas_drawAtlas_3_cullRect'>cullRect</a> is a conservative bounds of all transformed <a href='undocumented#Sprite'>sprites</a>.
|
|
If <a href='#SkCanvas_drawAtlas_3_cullRect'>cullRect</a> is outside of clip, <a href='SkCanvas_Reference#Canvas'>canvas</a> can skip drawing.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawAtlas_3_atlas'><code><strong>atlas</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing <a href='undocumented#Sprite'>sprites</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_3_xform'><code><strong>xform</strong></code></a></td>
|
|
<td><a href='undocumented#SkRSXform'>SkRSXform</a> mappings for <a href='undocumented#Sprite'>sprites</a> in <a href='#SkCanvas_drawAtlas_3_atlas'>atlas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_3_tex'><code><strong>tex</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> locations of <a href='undocumented#Sprite'>sprites</a> in <a href='#SkCanvas_drawAtlas_3_atlas'>atlas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_3_count'><code><strong>count</strong></code></a></td>
|
|
<td>number of <a href='undocumented#Sprite'>sprites</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_3_cullRect'><code><strong>cullRect</strong></code></a></td>
|
|
<td>bounds of transformed <a href='undocumented#Sprite'>sprites</a> for efficient clipping; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_3_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and so on; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawAtlas_3"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a>
|
|
|
|
<a name='SkCanvas_drawAtlas_4'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawAtlas'>drawAtlas</a>(const <a href='undocumented#sk_sp'>sk_sp</a><<a href='SkImage_Reference#SkImage'>SkImage</a>>& atlas, const <a href='undocumented#SkRSXform'>SkRSXform</a> xform[], const <a href='SkRect_Reference#SkRect'>SkRect</a> tex[], int count,
|
|
const <a href='SkRect_Reference#SkRect'>SkRect</a>* cullRect, const <a href='SkPaint_Reference#SkPaint'>SkPaint</a>* <a href='SkPaint_Reference#Paint'>paint</a>)
|
|
</pre>
|
|
|
|
Draws a set of <a href='undocumented#Sprite'>sprites</a> from <a href='#SkCanvas_drawAtlas_4_atlas'>atlas</a>, using clip, <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, and optional <a href='SkPaint_Reference#SkPaint'>SkPaint</a> <a href='#SkCanvas_drawAtlas_4_paint'>paint</a>.
|
|
<a href='#SkCanvas_drawAtlas_4_paint'>paint</a> uses <a href='SkPaint_Reference#Anti_Alias'>anti-alias</a>, <a href='SkColor_Reference#Alpha'>alpha</a>, <a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, and <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>
|
|
to draw, if present. For each entry in the array, <a href='SkRect_Reference#SkRect'>SkRect</a> <a href='#SkCanvas_drawAtlas_4_tex'>tex</a> locates <a href='undocumented#Sprite'>sprite</a> in
|
|
<a href='#SkCanvas_drawAtlas_4_atlas'>atlas</a>, and <a href='undocumented#SkRSXform'>SkRSXform</a> <a href='#SkCanvas_drawAtlas_4_xform'>xform</a> transforms it into destination space.
|
|
|
|
<a href='#SkCanvas_drawAtlas_4_xform'>xform</a> and <a href='undocumented#Text'>text</a> must contain <a href='#SkCanvas_drawAtlas_4_count'>count</a> entries.
|
|
Optional <a href='#SkCanvas_drawAtlas_4_cullRect'>cullRect</a> is a conservative bounds of all transformed <a href='undocumented#Sprite'>sprites</a>.
|
|
If <a href='#SkCanvas_drawAtlas_4_cullRect'>cullRect</a> is outside of clip, <a href='SkCanvas_Reference#Canvas'>canvas</a> can skip drawing.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawAtlas_4_atlas'><code><strong>atlas</strong></code></a></td>
|
|
<td><a href='SkImage_Reference#SkImage'>SkImage</a> containing <a href='undocumented#Sprite'>sprites</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_4_xform'><code><strong>xform</strong></code></a></td>
|
|
<td><a href='undocumented#SkRSXform'>SkRSXform</a> mappings for <a href='undocumented#Sprite'>sprites</a> in <a href='#SkCanvas_drawAtlas_4_atlas'>atlas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_4_tex'><code><strong>tex</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> locations of <a href='undocumented#Sprite'>sprites</a> in <a href='#SkCanvas_drawAtlas_4_atlas'>atlas</a></td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_4_count'><code><strong>count</strong></code></a></td>
|
|
<td>number of <a href='undocumented#Sprite'>sprites</a> to draw</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_4_cullRect'><code><strong>cullRect</strong></code></a></td>
|
|
<td>bounds of transformed <a href='undocumented#Sprite'>sprites</a> for efficient clipping; may be nullptr</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAtlas_4_paint'><code><strong>paint</strong></code></a></td>
|
|
<td><a href='undocumented#SkColorFilter'>SkColorFilter</a>, <a href='undocumented#SkImageFilter'>SkImageFilter</a>, <a href='SkBlendMode_Reference#SkBlendMode'>SkBlendMode</a>, and so on; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawAtlas_4"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_drawBitmap'>drawBitmap</a> <a href='#SkCanvas_drawImage'>drawImage</a>
|
|
|
|
<a name='SkCanvas_drawDrawable'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawDrawable'>drawDrawable</a>(<a href='undocumented#SkDrawable'>SkDrawable</a>* <a href='undocumented#Drawable'>drawable</a>, const <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>* <a href='SkMatrix_Reference#Matrix'>matrix</a> = nullptr)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#SkDrawable'>SkDrawable</a> <a href='#SkCanvas_drawDrawable_drawable'>drawable</a> using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, concatenated with
|
|
optional <a href='#SkCanvas_drawDrawable_matrix'>matrix</a>.
|
|
|
|
If <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> has an asynchronous implementation, as is the case
|
|
when it is recording into <a href='SkPicture_Reference#SkPicture'>SkPicture</a>, then <a href='#SkCanvas_drawDrawable_drawable'>drawable</a> will be referenced,
|
|
so that <a href='undocumented#SkDrawable'>SkDrawable</a>::<a href='#SkDrawable_draw'>draw()</a> can be called when the operation is finalized. To force
|
|
immediate drawing, call <a href='undocumented#SkDrawable'>SkDrawable</a>::<a href='#SkDrawable_draw'>draw()</a> instead.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawDrawable_drawable'><code><strong>drawable</strong></code></a></td>
|
|
<td>custom struct encapsulating drawing commands</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawDrawable_matrix'><code><strong>matrix</strong></code></a></td>
|
|
<td>transformation applied to drawing; may be nullptr</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawDrawable"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='undocumented#SkDrawable'>SkDrawable</a> <a href='#SkCanvas_drawPicture'>drawPicture</a>
|
|
|
|
<a name='SkCanvas_drawDrawable_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawDrawable'>drawDrawable</a>(<a href='undocumented#SkDrawable'>SkDrawable</a>* <a href='undocumented#Drawable'>drawable</a>, <a href='undocumented#SkScalar'>SkScalar</a> x, <a href='undocumented#SkScalar'>SkScalar</a> y)
|
|
</pre>
|
|
|
|
Draws <a href='undocumented#SkDrawable'>SkDrawable</a> <a href='#SkCanvas_drawDrawable_2_drawable'>drawable</a> using clip and <a href='SkMatrix_Reference#SkMatrix'>SkMatrix</a>, offset by (<a href='#SkCanvas_drawDrawable_2_x'>x</a>, <a href='#SkCanvas_drawDrawable_2_y'>y</a>).
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|
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If <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> has an asynchronous implementation, as is the case
|
|
when it is recording into <a href='SkPicture_Reference#SkPicture'>SkPicture</a>, then <a href='#SkCanvas_drawDrawable_2_drawable'>drawable</a> will be referenced,
|
|
so that <a href='undocumented#SkDrawable'>SkDrawable</a>::<a href='#SkDrawable_draw'>draw()</a> can be called when the operation is finalized. To force
|
|
immediate drawing, call <a href='undocumented#SkDrawable'>SkDrawable</a>::<a href='#SkDrawable_draw'>draw()</a> instead.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawDrawable_2_drawable'><code><strong>drawable</strong></code></a></td>
|
|
<td>custom struct encapsulating drawing commands</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawDrawable_2_x'><code><strong>x</strong></code></a></td>
|
|
<td>offset into <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> writable pixels on x-axis</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawDrawable_2_y'><code><strong>y</strong></code></a></td>
|
|
<td>offset into <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> writable pixels on y-axis</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_drawDrawable_2"></fiddle-embed></div>
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|
|
|
### See Also
|
|
|
|
<a href='undocumented#SkDrawable'>SkDrawable</a> <a href='#SkCanvas_drawPicture'>drawPicture</a>
|
|
|
|
<a name='SkCanvas_drawAnnotation'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawAnnotation'>drawAnnotation</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, const char key[], <a href='undocumented#SkData'>SkData</a>* value)
|
|
</pre>
|
|
|
|
Associates <a href='SkRect_Reference#SkRect'>SkRect</a> on <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> with an annotation; a key-value pair, where the <a href='#SkCanvas_drawAnnotation_key'>key</a> is
|
|
a null-terminated UTF-8 <a href='undocumented#String'>string</a>, and optional <a href='#SkCanvas_drawAnnotation_value'>value</a> is stored as <a href='undocumented#SkData'>SkData</a>.
|
|
|
|
Only some <a href='SkCanvas_Reference#Canvas'>canvas</a> implementations, such as recording to <a href='SkPicture_Reference#SkPicture'>SkPicture</a>, or drawing to
|
|
<a href='undocumented#Document_PDF'>document PDF</a>, use annotations.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawAnnotation_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> extent of <a href='SkCanvas_Reference#Canvas'>canvas</a> to annotate</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAnnotation_key'><code><strong>key</strong></code></a></td>
|
|
<td><a href='undocumented#String'>string</a> used for lookup</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAnnotation_value'><code><strong>value</strong></code></a></td>
|
|
<td><a href='undocumented#Data'>data</a> holding <a href='#SkCanvas_drawAnnotation_value'>value</a> stored in annotation</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="00b430bd80d740e19c6d020a940f56d5"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='undocumented#SkDocument'>SkDocument</a>
|
|
|
|
<a name='SkCanvas_drawAnnotation_2'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
void <a href='#SkCanvas_drawAnnotation'>drawAnnotation</a>(const <a href='SkRect_Reference#SkRect'>SkRect</a>& <a href='SkRect_Reference#Rect'>rect</a>, const char key[], const <a href='undocumented#sk_sp'>sk_sp</a><<a href='undocumented#SkData'>SkData</a>>& value)
|
|
</pre>
|
|
|
|
Associates <a href='SkRect_Reference#SkRect'>SkRect</a> on <a href='SkCanvas_Reference#SkCanvas'>SkCanvas</a> when an annotation; a key-value pair, where the <a href='#SkCanvas_drawAnnotation_2_key'>key</a> is
|
|
a null-terminated UTF-8 <a href='undocumented#String'>string</a>, and optional <a href='#SkCanvas_drawAnnotation_2_value'>value</a> is stored as <a href='undocumented#SkData'>SkData</a>.
|
|
|
|
Only some <a href='SkCanvas_Reference#Canvas'>canvas</a> implementations, such as recording to <a href='SkPicture_Reference#SkPicture'>SkPicture</a>, or drawing to
|
|
<a href='undocumented#Document_PDF'>document PDF</a>, use annotations.
|
|
|
|
### Parameters
|
|
|
|
<table> <tr> <td><a name='SkCanvas_drawAnnotation_2_rect'><code><strong>rect</strong></code></a></td>
|
|
<td><a href='SkRect_Reference#SkRect'>SkRect</a> extent of <a href='SkCanvas_Reference#Canvas'>canvas</a> to annotate</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAnnotation_2_key'><code><strong>key</strong></code></a></td>
|
|
<td><a href='undocumented#String'>string</a> used for lookup</td>
|
|
</tr>
|
|
<tr> <td><a name='SkCanvas_drawAnnotation_2_value'><code><strong>value</strong></code></a></td>
|
|
<td><a href='undocumented#Data'>data</a> holding <a href='#SkCanvas_drawAnnotation_2_value'>value</a> stored in annotation</td>
|
|
</tr>
|
|
</table>
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="00b430bd80d740e19c6d020a940f56d5"></fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='SkPicture_Reference#SkPicture'>SkPicture</a> <a href='undocumented#SkDocument'>SkDocument</a>
|
|
|
|
<a name='SkCanvas_isClipEmpty'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
virtual bool <a href='#SkCanvas_isClipEmpty'>isClipEmpty</a>()const
|
|
</pre>
|
|
|
|
Returns true if clip is empty; that is, nothing will draw.
|
|
|
|
May do work when called; it should not be called
|
|
more often than needed. However, once called, subsequent calls perform no
|
|
work until clip changes.
|
|
|
|
### Return Value
|
|
|
|
true if clip is empty
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_isClipEmpty">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
clip is not empty
|
|
clip is empty
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_isClipRect'>isClipRect</a> <a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a> <a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a>
|
|
|
|
<a name='SkCanvas_isClipRect'></a>
|
|
|
|
---
|
|
|
|
<pre style="padding: 1em 1em 1em 1em; width: 62.5em;background-color: #f0f0f0">
|
|
virtual bool <a href='#SkCanvas_isClipRect'>isClipRect</a>()const
|
|
</pre>
|
|
|
|
Returns true if clip is <a href='SkRect_Reference#SkRect'>SkRect</a> and not empty.
|
|
Returns false if the clip is empty, or if it is not <a href='SkRect_Reference#SkRect'>SkRect</a>.
|
|
|
|
### Return Value
|
|
|
|
true if clip is <a href='SkRect_Reference#SkRect'>SkRect</a> and not empty
|
|
|
|
### Example
|
|
|
|
<div><fiddle-embed name="@Canvas_isClipRect">
|
|
|
|
#### Example Output
|
|
|
|
~~~~
|
|
clip is rect
|
|
clip is not rect
|
|
~~~~
|
|
|
|
</fiddle-embed></div>
|
|
|
|
### See Also
|
|
|
|
<a href='#SkCanvas_isClipEmpty'>isClipEmpty</a> <a href='#SkCanvas_getLocalClipBounds'>getLocalClipBounds</a> <a href='#SkCanvas_getDeviceClipBounds'>getDeviceClipBounds</a>
|
|
|