| |
| /* |
| * 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 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 drawRect(const SkRect&, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawRRect(const SkRRect&, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawPath(const SkPath& path, 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 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 drawPatch(const SkPatch& patch, 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 SkDrawFilter* setDrawFilter(SkDrawFilter* filter) SK_OVERRIDE; |
| |
| protected: |
| virtual void willSave() SK_OVERRIDE; |
| virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) SK_OVERRIDE; |
| virtual void willRestore() SK_OVERRIDE; |
| |
| virtual void didConcat(const SkMatrix&) SK_OVERRIDE; |
| virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE; |
| |
| virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE; |
| virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, |
| const SkPaint&) SK_OVERRIDE; |
| virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[], |
| const SkPaint&) SK_OVERRIDE; |
| virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[], |
| SkScalar constY, const SkPaint&) SK_OVERRIDE; |
| virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path, |
| const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE; |
| |
| virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE; |
| virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE; |
| virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE; |
| virtual void onClipRegion(const SkRegion&, SkRegion::Op) SK_OVERRIDE; |
| |
| virtual void onDrawPicture(const SkPicture*) SK_OVERRIDE; |
| |
| private: |
| SkCanvas* fProxy; |
| |
| typedef SkCanvas INHERITED; |
| }; |
| |
| #endif |