91 lines
4.0 KiB
C++
91 lines
4.0 KiB
C++
#ifndef SkProxyCanvas_DEFINED
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#define SkProxyCanvas_DEFINED
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#include "SkCanvas.h"
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/** This class overrides all virtual methods on SkCanvas, and redirects them
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to a "proxy", another SkCanvas instance. It can be the basis for
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intercepting (and possibly modifying) calls to a canvas.
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There must be a proxy installed before the proxycanvas can be used (i.e.
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before its virtual methods can be called).
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*/
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class SkProxyCanvas : public SkCanvas {
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public:
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SkProxyCanvas() : fProxy(NULL) {}
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SkProxyCanvas(SkCanvas* proxy);
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virtual ~SkProxyCanvas();
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SkCanvas* getProxy() const { return fProxy; }
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void setProxy(SkCanvas* proxy);
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// overrides from SkCanvas
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virtual bool getViewport(SkIPoint* size) const;
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virtual bool setViewport(int x, int y);
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virtual SkDevice* setBitmapDevice(const SkBitmap& bitmap);
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virtual int save(SaveFlags flags = kMatrixClip_SaveFlag);
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virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
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SaveFlags flags = kARGB_ClipLayer_SaveFlag);
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virtual void restore();
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virtual bool translate(SkScalar dx, SkScalar dy);
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virtual bool scale(SkScalar sx, SkScalar sy);
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virtual bool rotate(SkScalar degrees);
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virtual bool skew(SkScalar sx, SkScalar sy);
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virtual bool concat(const SkMatrix& matrix);
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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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virtual bool clipPath(const SkPath& path,
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SkRegion::Op op = SkRegion::kIntersect_Op);
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virtual bool clipRegion(const SkRegion& deviceRgn,
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SkRegion::Op op = SkRegion::kIntersect_Op);
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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 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 drawBitmapRect(const SkBitmap& bitmap, const SkIRect* src,
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const SkRect& dst, const SkPaint* paint = NULL);
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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 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 SkBounder* setBounder(SkBounder* bounder);
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virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter);
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virtual SkDevice* createDevice(SkBitmap::Config, int width, int height,
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bool isOpaque, bool isForLayer);
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private:
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SkCanvas* fProxy;
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typedef SkCanvas INHERITED;
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};
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#endif
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