92 lines
4.8 KiB
C
92 lines
4.8 KiB
C
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#ifndef EXPERIMENTAL_PDFVIEWER_SKNULCANVAS_H_
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#define EXPERIMENTAL_PDFVIEWER_SKNULCANVAS_H_
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#include "SkCanvas.h"
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class SK_API SkNulCanvas : public SkCanvas {
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public:
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SK_DECLARE_INST_COUNT(SkNulCanvas);
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SkNulCanvas() {}
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explicit SkNulCanvas(SkDevice* device) : SkCanvas(device) {}
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explicit SkNulCanvas(const SkBitmap& bitmap) : SkCanvas(bitmap) {}
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virtual ~SkNulCanvas() {}
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virtual int save(SaveFlags flags = kMatrixClip_SaveFlag) {return 0;}
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virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
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SaveFlags flags = kARGB_ClipLayer_SaveFlag) {return 0;}
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int saveLayerAlpha(const SkRect* bounds, U8CPU alpha,
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SaveFlags flags = kARGB_ClipLayer_SaveFlag) {return 0;}
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virtual void restore() {}
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int getSaveCount() const {return 0;}
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virtual bool isDrawingToLayer() const {return false;}
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virtual bool translate(SkScalar dx, SkScalar dy) {return true;}
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virtual bool scale(SkScalar sx, SkScalar sy) {return true;}
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virtual bool rotate(SkScalar degrees) {return true;}
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virtual bool skew(SkScalar sx, SkScalar sy) {return true;}
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virtual bool concat(const SkMatrix& matrix) {return true;}
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virtual void setMatrix(const SkMatrix& matrix) {}
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virtual bool clipRect(const SkRect& rect,
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SkRegion::Op op = SkRegion::kIntersect_Op,
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bool doAntiAlias = false) {return true;}
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virtual bool clipRRect(const SkRRect& rrect,
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SkRegion::Op op = SkRegion::kIntersect_Op,
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bool doAntiAlias = false) {return true;}
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virtual bool clipPath(const SkPath& path,
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SkRegion::Op op = SkRegion::kIntersect_Op,
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bool doAntiAlias = false) {return true;}
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virtual bool clipRegion(const SkRegion& deviceRgn,
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SkRegion::Op op = SkRegion::kIntersect_Op) {return true;}
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virtual void clear(SkColor) {}
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virtual void drawPaint(const SkPaint& paint) {}
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virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
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const SkPaint& paint) {}
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virtual void drawRect(const SkRect& rect, const SkPaint& paint) {}
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virtual void drawOval(const SkRect& oval, const SkPaint&) {}
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virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint) {}
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virtual void drawPath(const SkPath& path, const SkPaint& paint) {}
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virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
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const SkPaint* paint = NULL) {}
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virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src,
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const SkRect& dst,
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const SkPaint* paint) {}
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virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m,
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const SkPaint* paint = NULL) {}
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virtual void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center,
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const SkRect& dst, const SkPaint* paint = NULL) {}
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virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
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const SkPaint* paint = NULL) {}
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virtual void drawText(const void* text, size_t byteLength, SkScalar x,
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SkScalar y, const SkPaint& paint) {}
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virtual void drawPosText(const void* text, size_t byteLength,
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const SkPoint pos[], const SkPaint& paint) {}
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virtual void drawPosTextH(const void* text, size_t byteLength,
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const SkScalar xpos[], SkScalar constY,
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const SkPaint& paint) {}
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virtual void drawTextOnPath(const void* text, size_t byteLength,
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const SkPath& path, const SkMatrix* matrix,
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const SkPaint& paint) {}
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virtual void drawPicture(SkPicture& picture) {}
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virtual void drawVertices(VertexMode vmode, int vertexCount,
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const SkPoint vertices[], const SkPoint texs[],
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const SkColor colors[], SkXfermode* xmode,
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const uint16_t indices[], int indexCount,
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const SkPaint& paint) {}
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virtual void drawData(const void* data, size_t length) {}
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virtual void beginCommentGroup(const char* description) {}
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virtual void addComment(const char* kywd, const char* value) {}
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virtual void endCommentGroup() {}
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virtual SkBounder* setBounder(SkBounder* bounder) {return NULL;}
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virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) {return NULL;}
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protected:
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virtual SkCanvas* canvasForDrawIter() {return NULL;}
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virtual SkDevice* setDevice(SkDevice* device) {return NULL;}
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private:
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typedef SkCanvas INHERITED;
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};
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#endif // EXPERIMENTAL_PDFVIEWER_SKNULCANVAS_H_
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