/* * Copyright 2011 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef SkProxyCanvas_DEFINED #define SkProxyCanvas_DEFINED #include "SkCanvas.h" /** This class overrides all virtual methods on SkCanvas, and redirects them to a "proxy", another SkCanvas instance. It can be the basis for intercepting (and possibly modifying) calls to a canvas. There must be a proxy installed before the proxycanvas can be used (i.e. before its virtual methods can be called). */ class SK_API SkProxyCanvas : public SkCanvas { public: SkProxyCanvas() : fProxy(NULL) {} SkProxyCanvas(SkCanvas* proxy); virtual ~SkProxyCanvas(); SkCanvas* getProxy() const { return fProxy; } void setProxy(SkCanvas* proxy); virtual int save(SaveFlags flags = kMatrixClip_SaveFlag) SK_OVERRIDE; virtual int saveLayer(const SkRect* bounds, const SkPaint* paint, SaveFlags flags = kARGB_ClipLayer_SaveFlag) SK_OVERRIDE; virtual void restore() SK_OVERRIDE; virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE; virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE; virtual bool rotate(SkScalar degrees) SK_OVERRIDE; virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE; virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE; virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE; virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE; virtual bool clipRRect(const SkRRect&, SkRegion::Op, bool) SK_OVERRIDE; virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE; virtual bool clipRegion(const SkRegion& deviceRgn, SkRegion::Op op = SkRegion::kIntersect_Op) SK_OVERRIDE; virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE; virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[], const SkPaint& paint) SK_OVERRIDE; virtual void drawOval(const SkRect&, const SkPaint& paint) SK_OVERRIDE; virtual void drawRRect(const SkRRect&, const SkPaint& paint) SK_OVERRIDE; virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top, const SkPaint* paint = NULL) SK_OVERRIDE; virtual void drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst, const SkPaint* paint, DrawBitmapRectFlags flags) SK_OVERRIDE; virtual void drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& m, const SkPaint* paint = NULL) SK_OVERRIDE; virtual void drawSprite(const SkBitmap& bitmap, int left, int top, const SkPaint* paint = NULL) SK_OVERRIDE; virtual void drawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, const SkPaint& paint) SK_OVERRIDE; virtual void drawPosText(const void* text, size_t byteLength, const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE; virtual void drawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[], SkScalar constY, const SkPaint& paint) SK_OVERRIDE; virtual void drawTextOnPath(const void* text, size_t byteLength, const SkPath& path, const SkMatrix* matrix, const SkPaint& paint) SK_OVERRIDE; virtual void drawPicture(SkPicture&) SK_OVERRIDE; virtual void drawVertices(VertexMode vmode, int vertexCount, const SkPoint vertices[], const SkPoint texs[], const SkColor colors[], SkXfermode* xmode, const uint16_t indices[], int indexCount, const SkPaint& paint) SK_OVERRIDE; virtual void drawData(const void* data, size_t length) SK_OVERRIDE; virtual void beginCommentGroup(const char* description) SK_OVERRIDE; virtual void addComment(const char* kywd, const char* value) SK_OVERRIDE; virtual void endCommentGroup() SK_OVERRIDE; virtual SkBounder* setBounder(SkBounder* bounder) SK_OVERRIDE; virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) SK_OVERRIDE; protected: virtual void onDrawRect(const SkRect&, const SkPaint& paint) SK_OVERRIDE; virtual void onDrawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE; private: SkCanvas* fProxy; typedef SkCanvas INHERITED; }; #endif