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| 1 |
| 2 /* |
| 3 * Copyright 2013 Google Inc. |
| 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. |
| 7 */ |
| 8 |
| 9 #ifndef SkCanvasStack_DEFINED |
| 10 #define SkCanvasStack_DEFINED |
| 11 |
| 12 #include "SkNWayCanvas.h" |
| 13 #include "SkTArray.h" |
| 14 |
| 15 class SkCanvasStack : public SkNWayCanvas { |
| 16 public: |
| 17 SkCanvasStack(int width, int height); |
| 18 virtual ~SkCanvasStack(); |
| 19 |
| 20 void pushCanvas(SkCanvas* canvas, SkIPoint origin); |
| 21 virtual void removeAll() SK_OVERRIDE; |
| 22 |
| 23 /* |
| 24 * The following add/remove canvas methods are overrides from SkNWayCanvas |
| 25 * that do not make sense in the context of our CanvasStack, but since we |
| 26 * can share most of the other implementation of NWay we override those |
| 27 * methods to be no-ops. |
| 28 */ |
| 29 virtual void addCanvas(SkCanvas*) SK_OVERRIDE {}; |
| 30 virtual void removeCanvas(SkCanvas*) SK_OVERRIDE {}; |
| 31 |
| 32 virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE; |
| 33 virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE; |
| 34 virtual bool clipRRect(const SkRRect&, SkRegion::Op, bool) SK_OVERRIDE; |
| 35 virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE; |
| 36 virtual bool clipRegion(const SkRegion& deviceRgn, |
| 37 SkRegion::Op) SK_OVERRIDE; |
| 38 |
| 39 private: |
| 40 struct CanvasData { |
| 41 SkIPoint origin; |
| 42 SkRegion requiredClip; |
| 43 }; |
| 44 |
| 45 SkTArray<CanvasData> fCanvasData; |
| 46 |
| 47 typedef SkNWayCanvas INHERITED; |
| 48 }; |
| 49 |
| 50 #endif |
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