f2b98d67dc
git-svn-id: http://skia.googlecode.com/svn/trunk@637 2bbb7eff-a529-9590-31e7-b0007b416f81
771 lines
25 KiB
C++
771 lines
25 KiB
C++
#include "SampleCode.h"
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#include "SkCanvas.h"
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#include "SkView.h"
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#include "Sk1DPathEffect.h"
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#include "Sk2DPathEffect.h"
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#include "SkAvoidXfermode.h"
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#include "SkBlurMaskFilter.h"
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#include "SkColorFilter.h"
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#include "SkColorPriv.h"
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#include "SkCornerPathEffect.h"
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#include "SkDashPathEffect.h"
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#include "SkDiscretePathEffect.h"
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#include "SkEmbossMaskFilter.h"
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#include "SkGradientShader.h"
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#include "SkImageDecoder.h"
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#include "SkLayerRasterizer.h"
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#include "SkMath.h"
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#include "SkPath.h"
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#include "SkRegion.h"
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#include "SkShader.h"
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#include "SkComposeShader.h"
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#include "SkCornerPathEffect.h"
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#include "SkPathMeasure.h"
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#include "SkPicture.h"
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#include "SkRandom.h"
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#include "SkTransparentShader.h"
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#include "SkTypeface.h"
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#include "SkUnitMappers.h"
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#include "SkUtils.h"
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#include "SkXfermode.h"
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#include <math.h>
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static inline SkPMColor rgb2gray(SkPMColor c)
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{
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unsigned r = SkGetPackedR32(c);
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unsigned g = SkGetPackedG32(c);
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unsigned b = SkGetPackedB32(c);
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unsigned x = (r * 5 + g * 7 + b * 4) >> 4;
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return SkPackARGB32(0, x, x, x) | (c & (SK_A32_MASK << SK_A32_SHIFT));
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}
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class SkGrayScaleColorFilter : public SkColorFilter {
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public:
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virtual void filterSpan(const SkPMColor src[], int count, SkPMColor result[])
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{
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for (int i = 0; i < count; i++)
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result[i] = rgb2gray(src[i]);
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}
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};
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class SkChannelMaskColorFilter : public SkColorFilter {
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public:
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SkChannelMaskColorFilter(U8CPU redMask, U8CPU greenMask, U8CPU blueMask)
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{
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fMask = SkPackARGB32(0xFF, redMask, greenMask, blueMask);
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}
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virtual void filterSpan(const SkPMColor src[], int count, SkPMColor result[])
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{
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SkPMColor mask = fMask;
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for (int i = 0; i < count; i++)
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result[i] = src[i] & mask;
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}
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private:
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SkPMColor fMask;
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};
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///////////////////////////////////////////////////////////
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static void r0(SkLayerRasterizer* rast, SkPaint& p)
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{
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p.setMaskFilter(SkBlurMaskFilter::Create(SkIntToScalar(3),
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SkBlurMaskFilter::kNormal_BlurStyle))->unref();
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rast->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
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p.setMaskFilter(NULL);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rast->addLayer(p);
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p.setAlpha(0x11);
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p.setStyle(SkPaint::kFill_Style);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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rast->addLayer(p);
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}
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static void r1(SkLayerRasterizer* rast, SkPaint& p)
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{
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rast->addLayer(p);
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p.setAlpha(0x40);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*2);
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rast->addLayer(p);
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}
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static void r2(SkLayerRasterizer* rast, SkPaint& p)
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{
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p.setStyle(SkPaint::kStrokeAndFill_Style);
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p.setStrokeWidth(SK_Scalar1*4);
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rast->addLayer(p);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*3/2);
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p);
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}
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static void r3(SkLayerRasterizer* rast, SkPaint& p)
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{
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1*3);
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rast->addLayer(p);
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p.setAlpha(0x20);
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p.setStyle(SkPaint::kFill_Style);
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p.setXfermodeMode(SkXfermode::kSrc_Mode);
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rast->addLayer(p);
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}
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static void r4(SkLayerRasterizer* rast, SkPaint& p)
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{
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p.setAlpha(0x60);
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rast->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
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p.setAlpha(0xFF);
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p, SK_Scalar1*3/2, SK_Scalar1*3/2);
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p.setXfermode(NULL);
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rast->addLayer(p);
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}
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static void r5(SkLayerRasterizer* rast, SkPaint& p)
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{
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rast->addLayer(p);
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p.setPathEffect(new SkDiscretePathEffect(SK_Scalar1*4, SK_Scalar1*3))->unref();
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p.setXfermodeMode(SkXfermode::kSrcOut_Mode);
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rast->addLayer(p);
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}
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static void r6(SkLayerRasterizer* rast, SkPaint& p)
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{
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rast->addLayer(p);
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p.setAntiAlias(false);
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SkLayerRasterizer* rast2 = new SkLayerRasterizer;
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r5(rast2, p);
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p.setRasterizer(rast2)->unref();
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p);
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}
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class Dot2DPathEffect : public Sk2DPathEffect {
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public:
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Dot2DPathEffect(SkScalar radius, const SkMatrix& matrix)
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: Sk2DPathEffect(matrix), fRadius(radius) {}
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virtual void flatten(SkFlattenableWriteBuffer& buffer)
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{
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this->INHERITED::flatten(buffer);
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buffer.writeScalar(fRadius);
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}
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virtual Factory getFactory() { return CreateProc; }
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protected:
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virtual void next(const SkPoint& loc, int u, int v, SkPath* dst)
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{
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dst->addCircle(loc.fX, loc.fY, fRadius);
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}
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Dot2DPathEffect(SkFlattenableReadBuffer& buffer) : Sk2DPathEffect(buffer)
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{
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fRadius = buffer.readScalar();
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}
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private:
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SkScalar fRadius;
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static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer)
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{
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return new Dot2DPathEffect(buffer);
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}
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typedef Sk2DPathEffect INHERITED;
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};
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static void r7(SkLayerRasterizer* rast, SkPaint& p)
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{
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0);
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lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
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p.setPathEffect(new Dot2DPathEffect(SK_Scalar1*4, lattice))->unref();
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rast->addLayer(p);
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}
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static void r8(SkLayerRasterizer* rast, SkPaint& p)
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{
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rast->addLayer(p);
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1*6, SK_Scalar1*6, 0, 0);
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lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
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p.setPathEffect(new Dot2DPathEffect(SK_Scalar1*2, lattice))->unref();
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p);
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p.setPathEffect(NULL);
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p.setXfermode(NULL);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rast->addLayer(p);
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}
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class Line2DPathEffect : public Sk2DPathEffect {
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public:
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Line2DPathEffect(SkScalar width, const SkMatrix& matrix)
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: Sk2DPathEffect(matrix), fWidth(width) {}
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virtual bool filterPath(SkPath* dst, const SkPath& src, SkScalar* width)
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{
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if (this->INHERITED::filterPath(dst, src, width))
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{
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*width = fWidth;
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return true;
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}
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return false;
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}
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virtual Factory getFactory() { return CreateProc; }
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virtual void flatten(SkFlattenableWriteBuffer& buffer)
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{
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this->INHERITED::flatten(buffer);
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buffer.writeScalar(fWidth);
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}
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protected:
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virtual void nextSpan(int u, int v, int ucount, SkPath* dst)
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{
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if (ucount > 1)
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{
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SkPoint src[2], dstP[2];
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src[0].set(SkIntToScalar(u) + SK_ScalarHalf,
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SkIntToScalar(v) + SK_ScalarHalf);
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src[1].set(SkIntToScalar(u+ucount) + SK_ScalarHalf,
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SkIntToScalar(v) + SK_ScalarHalf);
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this->getMatrix().mapPoints(dstP, src, 2);
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dst->moveTo(dstP[0]);
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dst->lineTo(dstP[1]);
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}
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}
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Line2DPathEffect(SkFlattenableReadBuffer& buffer) : Sk2DPathEffect(buffer)
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{
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fWidth = buffer.readScalar();
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}
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private:
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SkScalar fWidth;
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static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) { return new Line2DPathEffect(buffer); }
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typedef Sk2DPathEffect INHERITED;
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};
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static void r9(SkLayerRasterizer* rast, SkPaint& p)
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{
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rast->addLayer(p);
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SkMatrix lattice;
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lattice.setScale(SK_Scalar1, SK_Scalar1*6, 0, 0);
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lattice.postRotate(SkIntToScalar(30), 0, 0);
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p.setPathEffect(new Line2DPathEffect(SK_Scalar1*2, lattice))->unref();
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p.setXfermodeMode(SkXfermode::kClear_Mode);
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rast->addLayer(p);
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p.setPathEffect(NULL);
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p.setXfermode(NULL);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(SK_Scalar1);
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rast->addLayer(p);
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}
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typedef void (*raster_proc)(SkLayerRasterizer*, SkPaint&);
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static const raster_proc gRastProcs[] = {
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r0, r1, r2, r3, r4, r5, r6, r7, r8, r9
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};
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static const struct {
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SkColor fMul, fAdd;
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} gLightingColors[] = {
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{ 0x808080, 0x800000 }, // general case
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{ 0x707070, 0x707070 }, // no-pin case
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{ 0xFFFFFF, 0x800000 }, // just-add case
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{ 0x808080, 0x000000 }, // just-mul case
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{ 0xFFFFFF, 0x000000 } // identity case
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};
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static unsigned color_dist16(uint16_t a, uint16_t b)
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{
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unsigned dr = SkAbs32(SkPacked16ToR32(a) - SkPacked16ToR32(b));
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unsigned dg = SkAbs32(SkPacked16ToG32(a) - SkPacked16ToG32(b));
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unsigned db = SkAbs32(SkPacked16ToB32(a) - SkPacked16ToB32(b));
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return SkMax32(dr, SkMax32(dg, db));
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}
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static unsigned scale_dist(unsigned dist, unsigned scale)
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{
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dist >>= 6;
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dist = (dist << 2) | dist;
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dist = (dist << 4) | dist;
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return dist;
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// return SkAlphaMul(dist, scale);
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}
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static void apply_shader(SkPaint* paint, int index)
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{
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raster_proc proc = gRastProcs[index];
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if (proc)
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{
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SkPaint p;
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SkLayerRasterizer* rast = new SkLayerRasterizer;
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p.setAntiAlias(true);
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proc(rast, p);
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paint->setRasterizer(rast)->unref();
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}
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#if 1
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SkScalar dir[] = { SK_Scalar1, SK_Scalar1, SK_Scalar1 };
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paint->setMaskFilter(SkBlurMaskFilter::CreateEmboss(dir, SK_Scalar1/4, SkIntToScalar(4), SkIntToScalar(3)))->unref();
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paint->setColor(SK_ColorBLUE);
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#endif
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}
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static void test_math()
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{
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float x;
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const float PI = 3.141593f;
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for (x = 0; x < 1; x += 0.05f)
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printf("atan(%g) = %g\n", x, atanf(x) * 180/PI);
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for (x = 1; x < 10000000; x *= 2)
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printf("atan(%g) = %g\n", x, atanf(x) * 180/PI);
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}
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class DemoView : public SkView {
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public:
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DemoView()
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{
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test_math();
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt)
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{
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if (SampleCode::TitleQ(*evt))
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{
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SampleCode::TitleR(evt, "Demo");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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virtual bool onClick(Click* click)
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{
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return this->INHERITED::onClick(click);
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}
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void makePath(SkPath& path)
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{
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path.addCircle(SkIntToScalar(20), SkIntToScalar(20), SkIntToScalar(20),
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SkPath::kCCW_Direction);
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for (int index = 0; index < 10; index++) {
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SkScalar x = SkFloatToScalar(cos(index / 10.0f * 2 * 3.1415925358f));
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SkScalar y = SkFloatToScalar(sin(index / 10.0f * 2 * 3.1415925358f));
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x *= index & 1 ? 7 : 14;
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y *= index & 1 ? 7 : 14;
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x += SkIntToScalar(20);
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y += SkIntToScalar(20);
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if (index == 0)
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path.moveTo(x, y);
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else
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path.lineTo(x, y);
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}
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path.close();
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}
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virtual void onDraw(SkCanvas* canvas)
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{
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canvas->drawColor(SK_ColorWHITE);
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canvas->save();
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drawPicture(canvas, 0);
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canvas->restore();
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{
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SkPicture picture;
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SkCanvas* record = picture.beginRecording(320, 480);
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drawPicture(record, 120);
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canvas->translate(0, SkIntToScalar(120));
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SkRect clip;
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clip.set(0, 0, SkIntToScalar(160), SkIntToScalar(160));
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do {
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canvas->save();
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canvas->clipRect(clip);
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picture.draw(canvas);
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canvas->restore();
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if (clip.fRight < SkIntToScalar(320))
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clip.offset(SkIntToScalar(160), 0);
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else if (clip.fBottom < SkIntToScalar(480))
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clip.offset(-SkIntToScalar(320), SkIntToScalar(160));
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else
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break;
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} while (true);
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}
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}
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void drawPicture(SkCanvas* canvas, int spriteOffset)
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{
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SkMatrix matrix; matrix.reset();
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SkPaint paint;
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SkPath path;
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SkPoint start = {0, 0};
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SkPoint stop = { SkIntToScalar(40), SkIntToScalar(40) };
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SkRect rect = {0, 0, SkIntToScalar(40), SkIntToScalar(40) };
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SkRect rect2 = {0, 0, SkIntToScalar(65), SkIntToScalar(20) };
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SkScalar left = 0, top = 0, x = 0, y = 0;
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int index;
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char ascii[] = "ascii...";
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size_t asciiLength = sizeof(ascii) - 1;
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char utf8[] = "utf8" "\xe2\x80\xa6";
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short utf16[] = {'u', 't', 'f', '1', '6', 0x2026 };
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short utf16simple[] = {'u', 't', 'f', '1', '6', '!' };
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makePath(path);
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SkTDArray<SkPoint>(pos);
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pos.setCount(asciiLength);
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for (index = 0; index < asciiLength; index++)
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pos[index].set(SkIntToScalar(index * 10), SkIntToScalar(index * 2));
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SkTDArray<SkPoint>(pos2);
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pos2.setCount(asciiLength);
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for (index = 0; index < asciiLength; index++)
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pos2[index].set(SkIntToScalar(index * 10), SkIntToScalar(20));
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// shaders
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SkPoint linearPoints[] = { 0, 0, SkIntToScalar(40), SkIntToScalar(40) };
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SkColor linearColors[] = { SK_ColorRED, SK_ColorBLUE };
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SkScalar* linearPos = NULL;
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int linearCount = 2;
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SkShader::TileMode linearMode = SkShader::kMirror_TileMode;
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SkUnitMapper* linearMapper = new SkDiscreteMapper(3);
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SkAutoUnref unmapLinearMapper(linearMapper);
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SkShader* linear = SkGradientShader::CreateLinear(linearPoints,
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linearColors, linearPos, linearCount, linearMode, linearMapper);
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SkPoint radialCenter = { SkIntToScalar(25), SkIntToScalar(25) };
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SkScalar radialRadius = SkIntToScalar(25);
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SkColor radialColors[] = { SK_ColorGREEN, SK_ColorGRAY, SK_ColorRED };
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SkScalar radialPos[] = { 0, SkIntToScalar(3) / 5, SkIntToScalar(1)};
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int radialCount = 3;
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SkShader::TileMode radialMode = SkShader::kRepeat_TileMode;
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SkUnitMapper* radialMapper = new SkCosineMapper();
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SkAutoUnref unmapRadialMapper(radialMapper);
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SkShader* radial = SkGradientShader::CreateRadial(radialCenter,
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radialRadius, radialColors, radialPos, radialCount,
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radialMode, radialMapper);
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SkTransparentShader* transparentShader = new SkTransparentShader();
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SkEmbossMaskFilter::Light light;
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light.fDirection[0] = SK_Scalar1/2;
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light.fDirection[1] = SK_Scalar1/2;
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light.fDirection[2] = SK_Scalar1/3;
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light.fAmbient = 0x48;
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light.fSpecular = 0x80;
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SkScalar radius = SkIntToScalar(12)/5;
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SkEmbossMaskFilter* embossFilter = new SkEmbossMaskFilter(light,
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radius);
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SkXfermode* xfermode = SkXfermode::Create(SkXfermode::kXor_Mode);
|
|
SkColorFilter* lightingFilter = SkColorFilter::CreateLightingFilter(
|
|
0xff89bc45, 0xff112233);
|
|
|
|
canvas->save();
|
|
canvas->translate(SkIntToScalar(0), SkIntToScalar(5));
|
|
paint.setFlags(SkPaint::kAntiAlias_Flag | SkPaint::kFilterBitmap_Flag);
|
|
// !!! draw through a clip
|
|
paint.setColor(SK_ColorLTGRAY);
|
|
paint.setStyle(SkPaint::kFill_Style);
|
|
SkRect clip = {0, 0, SkIntToScalar(320), SkIntToScalar(120)};
|
|
canvas->clipRect(clip);
|
|
paint.setShader(SkShader::CreateBitmapShader(fTx,
|
|
SkShader::kMirror_TileMode, SkShader::kRepeat_TileMode))->unref();
|
|
canvas->drawPaint(paint);
|
|
canvas->save();
|
|
|
|
// line (exercises xfermode, colorShader, colorFilter, filterShader)
|
|
paint.setColor(SK_ColorGREEN);
|
|
paint.setStrokeWidth(SkIntToScalar(10));
|
|
paint.setStyle(SkPaint::kStroke_Style);
|
|
paint.setXfermode(xfermode)->unref();
|
|
paint.setColorFilter(lightingFilter)->unref();
|
|
canvas->drawLine(start.fX, start.fY, stop.fX, stop.fY, paint); // should not be green
|
|
paint.setXfermode(NULL);
|
|
paint.setColorFilter(NULL);
|
|
|
|
// rectangle
|
|
paint.setStyle(SkPaint::kFill_Style);
|
|
canvas->translate(SkIntToScalar(50), 0);
|
|
paint.setColor(SK_ColorYELLOW);
|
|
paint.setShader(linear)->unref();
|
|
paint.setPathEffect(pathEffectTest())->unref();
|
|
canvas->drawRect(rect, paint);
|
|
paint.setPathEffect(NULL);
|
|
|
|
// circle w/ emboss & transparent (exercises 3dshader)
|
|
canvas->translate(SkIntToScalar(50), 0);
|
|
paint.setMaskFilter(embossFilter)->unref();
|
|
canvas->drawOval(rect, paint);
|
|
canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
|
|
paint.setShader(transparentShader)->unref();
|
|
canvas->drawOval(rect, paint);
|
|
canvas->translate(0, SkIntToScalar(-10));
|
|
|
|
// path
|
|
canvas->translate(SkIntToScalar(50), 0);
|
|
paint.setColor(SK_ColorRED);
|
|
paint.setStyle(SkPaint::kStroke_Style);
|
|
paint.setStrokeWidth(SkIntToScalar(5));
|
|
paint.setShader(radial)->unref();
|
|
paint.setMaskFilter(NULL);
|
|
canvas->drawPath(path, paint);
|
|
|
|
paint.setShader(NULL);
|
|
// bitmap, sprite
|
|
canvas->translate(SkIntToScalar(50), 0);
|
|
paint.setStyle(SkPaint::kFill_Style);
|
|
canvas->drawBitmap(fBug, left, top, &paint);
|
|
canvas->translate(SkIntToScalar(30), 0);
|
|
canvas->drawSprite(fTb,
|
|
SkScalarRound(canvas->getTotalMatrix().getTranslateX()),
|
|
spriteOffset + 10, &paint);
|
|
|
|
canvas->translate(-SkIntToScalar(30), SkIntToScalar(30));
|
|
paint.setShader(shaderTest())->unref(); // test compose shader
|
|
canvas->drawRect(rect2, paint);
|
|
paint.setShader(NULL);
|
|
|
|
canvas->restore();
|
|
// text
|
|
canvas->translate(0, SkIntToScalar(60));
|
|
canvas->save();
|
|
paint.setColor(SK_ColorGRAY);
|
|
canvas->drawPosText(ascii, asciiLength, pos.begin(), paint);
|
|
canvas->drawPosText(ascii, asciiLength, pos2.begin(), paint);
|
|
|
|
canvas->translate(SkIntToScalar(50), 0);
|
|
paint.setColor(SK_ColorCYAN);
|
|
canvas->drawText(utf8, sizeof(utf8) - 1, x, y, paint);
|
|
|
|
canvas->translate(SkIntToScalar(30), 0);
|
|
paint.setColor(SK_ColorMAGENTA);
|
|
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
|
|
matrix.setTranslate(SkIntToScalar(10), SkIntToScalar(10));
|
|
canvas->drawTextOnPath((void*) utf16, sizeof(utf16), path, &matrix, paint);
|
|
canvas->translate(0, SkIntToScalar(20));
|
|
canvas->drawTextOnPath((void*) utf16simple, sizeof(utf16simple), path, &matrix, paint);
|
|
canvas->restore();
|
|
|
|
canvas->translate(0, SkIntToScalar(60));
|
|
paint.setTextEncoding(SkPaint::kUTF8_TextEncoding);
|
|
canvas->restore();
|
|
}
|
|
|
|
/*
|
|
./SkColorFilter.h:25:class SkColorFilter : public SkFlattenable { -- abstract
|
|
static SkColorFilter* CreatXfermodeFilter() *** untested ***
|
|
static SkColorFilter* CreatePorterDuffFilter() *** untested ***
|
|
static SkColorFilter* CreateLightingFilter() -- tested
|
|
./SkDrawLooper.h:9:class SkDrawLooper : public SkFlattenable { -- virtually abstract
|
|
./SkBlurDrawLooper.h:9:class SkBlurDrawLooper : public SkDrawLooper { *** untested ***
|
|
./SkMaskFilter.h:41:class SkMaskFilter : public SkFlattenable { -- abstract chmod +w .h
|
|
./SkEmbossMaskFilter.h:27:class SkEmbossMaskFilter : public SkMaskFilter { -- tested
|
|
./SkPathEffect.h:33:class SkPathEffect : public SkFlattenable { -- abstract
|
|
./Sk1DPathEffect.h:27:class Sk1DPathEffect : public SkPathEffect { -- abstract
|
|
./Sk1DPathEffect.h:48:class SkPath1DPathEffect : public Sk1DPathEffect { -- tested
|
|
./Sk2DPathEffect.h:25:class Sk2DPathEffect : public SkPathEffect { *** untested ***
|
|
./SkCornerPathEffect.h:28:class SkCornerPathEffect : public SkPathEffect { *** untested ***
|
|
./SkDashPathEffect.h:27:class SkDashPathEffect : public SkPathEffect {
|
|
./SkDiscretePathEffect.h:27:class SkDiscretePathEffect : public SkPathEffect {
|
|
./SkPaint.h:760:class SkStrokePathEffect : public SkPathEffect {
|
|
./SkPathEffect.h:58:class SkPairPathEffect : public SkPathEffect {
|
|
./SkPathEffect.h:78:class SkComposePathEffect : public SkPairPathEffect {
|
|
./SkPathEffect.h:114:class SkSumPathEffect : public SkPairPathEffect {
|
|
./SkRasterizer.h:29:class SkRasterizer : public SkFlattenable {
|
|
./SkLayerRasterizer.h:27:class SkLayerRasterizer : public SkRasterizer {
|
|
./SkShader.h:36:class SkShader : public SkFlattenable {
|
|
./SkColorFilter.h:59:class SkFilterShader : public SkShader {
|
|
./SkColorShader.h:26:class SkColorShader : public SkShader {
|
|
./SkShaderExtras.h:31:class SkComposeShader : public SkShader {
|
|
./SkTransparentShader.h:23:class SkTransparentShader : public SkShader {
|
|
./SkUnitMapper.h:24:class SkUnitMapper : public SkFlattenable {
|
|
./SkUnitMapper.h:33:class SkDiscreteMapper : public SkUnitMapper {
|
|
./SkUnitMapper.h:51:class SkFlipCosineMapper : public SkUnitMapper {
|
|
./SkXfermode.h:32:class SkXfermode : public SkFlattenable {
|
|
./SkAvoidXfermode.h:28:class SkAvoidXfermode : public SkXfermode { *** not done *** chmod +w .h .cpp
|
|
./SkXfermode.h:54:class SkProcXfermode : public SkXfermode {
|
|
*/
|
|
|
|
/*
|
|
./SkBlurMaskFilter.h:25:class SkBlurMaskFilter {
|
|
chmod +w SkBlurMaskFilter.cpp
|
|
./SkGradientShader.h:30:class SkGradientShader {
|
|
*/
|
|
// save layer, bounder, looper
|
|
// matrix
|
|
// clip /path/region
|
|
// bitmap proc shader ?
|
|
|
|
/* untested:
|
|
SkCornerPathEffect.h:28:class SkCornerPathEffect : public SkPathEffect {
|
|
*/
|
|
|
|
virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y)
|
|
{
|
|
fClickPt.set(x, y);
|
|
this->inval(NULL);
|
|
return this->INHERITED::onFindClickHandler(x, y);
|
|
}
|
|
|
|
SkPathEffect* pathEffectTest()
|
|
{
|
|
static const int gXY[] = { 1, 0, 0, -1, 2, -1, 3, 0, 2, 1, 0, 1 };
|
|
SkScalar gPhase = 0;
|
|
SkPath path;
|
|
path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1]));
|
|
for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2)
|
|
path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1]));
|
|
path.close();
|
|
path.offset(SkIntToScalar(-6), 0);
|
|
SkPathEffect* outer = new SkPath1DPathEffect(path, SkIntToScalar(12),
|
|
gPhase, SkPath1DPathEffect::kRotate_Style);
|
|
SkPathEffect* inner = new SkDiscretePathEffect(SkIntToScalar(2),
|
|
SkIntToScalar(1)/10); // SkCornerPathEffect(SkIntToScalar(2));
|
|
SkPathEffect* result = new SkComposePathEffect(outer, inner);
|
|
outer->unref();
|
|
inner->unref();
|
|
return result;
|
|
}
|
|
|
|
SkPathEffect* pathEffectTest2() // unsure this works (has no visible effect)
|
|
{
|
|
SkPathEffect* outer = new SkStrokePathEffect(SkIntToScalar(4),
|
|
SkPaint::kStroke_Style, SkPaint::kMiter_Join, SkPaint::kButt_Cap);
|
|
static const SkScalar intervals[] = {SkIntToScalar(1), SkIntToScalar(2),
|
|
SkIntToScalar(2), SkIntToScalar(1)};
|
|
SkPathEffect* inner = new SkDashPathEffect(intervals,
|
|
sizeof(intervals) / sizeof(intervals[0]), 0);
|
|
SkPathEffect* result = new SkSumPathEffect(outer, inner);
|
|
outer->unref();
|
|
inner->unref();
|
|
return result;
|
|
}
|
|
|
|
SkShader* shaderTest()
|
|
{
|
|
SkPoint pts[] = {0, 0, SkIntToScalar(100), 0 };
|
|
SkColor colors[] = { SK_ColorRED, SK_ColorBLUE };
|
|
SkShader* shaderA = SkGradientShader::CreateLinear(pts, colors, NULL,
|
|
2, SkShader::kClamp_TileMode);
|
|
pts[1].set(0, SkIntToScalar(100));
|
|
SkColor colors2[] = {SK_ColorBLACK, SkColorSetARGB(0x80, 0, 0, 0)};
|
|
SkShader* shaderB = SkGradientShader::CreateLinear(pts, colors2, NULL,
|
|
2, SkShader::kClamp_TileMode);
|
|
SkXfermode* mode = SkXfermode::Create(SkXfermode::kDstIn_Mode);
|
|
SkShader* result = new SkComposeShader(shaderA, shaderB, mode);
|
|
shaderA->unref();
|
|
shaderB->unref();
|
|
mode->unref();
|
|
return result;
|
|
}
|
|
|
|
virtual void startTest() {
|
|
SkImageDecoder::DecodeFile("/Users/caryclark/Desktop/bugcirc.gif", &fBug);
|
|
SkImageDecoder::DecodeFile("/Users/caryclark/Desktop/tbcirc.gif", &fTb);
|
|
SkImageDecoder::DecodeFile("/Users/caryclark/Desktop/05psp04.gif", &fTx);
|
|
}
|
|
|
|
void drawRaster(SkCanvas* canvas)
|
|
{
|
|
for (int index = 0; index < SK_ARRAY_COUNT(gRastProcs); index++)
|
|
drawOneRaster(canvas);
|
|
}
|
|
|
|
void drawOneRaster(SkCanvas* canvas)
|
|
{
|
|
canvas->save();
|
|
|
|
SkScalar x = SkIntToScalar(20);
|
|
SkScalar y = SkIntToScalar(40);
|
|
SkPaint paint;
|
|
|
|
paint.setAntiAlias(true);
|
|
paint.setTextSize(SkIntToScalar(48));
|
|
paint.setTypeface(SkTypeface::CreateFromName("sans-serif",
|
|
SkTypeface::kBold));
|
|
|
|
SkString str("GOOGLE");
|
|
|
|
for (int i = 0; i < SK_ARRAY_COUNT(gRastProcs); i++)
|
|
{
|
|
apply_shader(&paint, i);
|
|
|
|
// paint.setMaskFilter(NULL);
|
|
// paint.setColor(SK_ColorBLACK);
|
|
|
|
#if 01
|
|
int index = i % SK_ARRAY_COUNT(gLightingColors);
|
|
paint.setColorFilter(SkColorFilter::CreateLightingFilter(
|
|
gLightingColors[index].fMul,
|
|
gLightingColors[index].fAdd))->unref();
|
|
#endif
|
|
|
|
canvas->drawText(str.c_str(), str.size(), x, y, paint);
|
|
SkRect oval = { x, y - SkIntToScalar(40), x + SkIntToScalar(40), y };
|
|
paint.setStyle(SkPaint::kStroke_Style);
|
|
canvas->drawOval(oval, paint);
|
|
paint.setStyle(SkPaint::kFill_Style);
|
|
|
|
y += paint.getFontSpacing();
|
|
}
|
|
|
|
canvas->restore();
|
|
|
|
if (1) {
|
|
SkAvoidXfermode mode(SK_ColorWHITE, 0xFF,
|
|
SkAvoidXfermode::kTargetColor_Mode);
|
|
SkPaint paint;
|
|
x += SkIntToScalar(20);
|
|
SkRect r = { x, 0, x + SkIntToScalar(360), SkIntToScalar(700) };
|
|
paint.setXfermode(&mode);
|
|
paint.setColor(SK_ColorGREEN);
|
|
paint.setAntiAlias(true);
|
|
canvas->drawOval(r, paint);
|
|
}
|
|
}
|
|
|
|
private:
|
|
SkPoint fClickPt;
|
|
SkBitmap fBug, fTb, fTx;
|
|
typedef SkView INHERITED;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
static SkView* MyFactory() { return new DemoView; }
|
|
static SkViewRegister reg(MyFactory);
|
|
|