| |
| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkCanvasStack_DEFINED |
| #define SkCanvasStack_DEFINED |
| |
| #include "SkNWayCanvas.h" |
| #include "SkTArray.h" |
| |
| class SkCanvasStack : public SkNWayCanvas { |
| public: |
| SkCanvasStack(int width, int height); |
| virtual ~SkCanvasStack(); |
| |
| void pushCanvas(SkCanvas* canvas, const SkIPoint& origin); |
| virtual void removeAll() SK_OVERRIDE; |
| |
| /* |
| * The following add/remove canvas methods are overrides from SkNWayCanvas |
| * that do not make sense in the context of our CanvasStack, but since we |
| * can share most of the other implementation of NWay we override those |
| * methods to be no-ops. |
| */ |
| virtual void addCanvas(SkCanvas*) SK_OVERRIDE { SkDEBUGFAIL("Invalid Op"); } |
| virtual void removeCanvas(SkCanvas*) SK_OVERRIDE { SkDEBUGFAIL("Invalid Op"); } |
| |
| protected: |
| virtual void didSetMatrix(const SkMatrix&) 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; |
| |
| private: |
| void clipToZOrderedBounds(); |
| |
| struct CanvasData { |
| SkIPoint origin; |
| SkRegion requiredClip; |
| }; |
| |
| SkTArray<CanvasData> fCanvasData; |
| |
| typedef SkNWayCanvas INHERITED; |
| }; |
| |
| #endif |