| /* |
| * 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 "include/core/SkCanvas.h" |
| #include "include/core/SkClipOp.h" |
| #include "include/core/SkM44.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkRegion.h" |
| #include "include/core/SkTypes.h" |
| #include "include/private/SkTArray.h" |
| #include "include/utils/SkNWayCanvas.h" |
| |
| #include <memory> |
| |
| class SkPath; |
| class SkRRect; |
| class SkShader; |
| struct SkRect; |
| |
| /** |
| * Like NWayCanvas, in that it forwards all canvas methods to each sub-canvas that is "pushed". |
| * |
| * Unlike NWayCanvas, this takes ownership of each subcanvas, and deletes them when this canvas |
| * is deleted. |
| */ |
| class SkCanvasStack : public SkNWayCanvas { |
| public: |
| SkCanvasStack(int width, int height); |
| ~SkCanvasStack() override; |
| |
| void pushCanvas(std::unique_ptr<SkCanvas>, const SkIPoint& origin); |
| void removeAll() 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. |
| */ |
| void addCanvas(SkCanvas*) override { SkDEBUGFAIL("Invalid Op"); } |
| void removeCanvas(SkCanvas*) override { SkDEBUGFAIL("Invalid Op"); } |
| |
| protected: |
| void didSetM44(const SkM44&) override; |
| |
| void onClipRect(const SkRect&, SkClipOp, ClipEdgeStyle) override; |
| void onClipRRect(const SkRRect&, SkClipOp, ClipEdgeStyle) override; |
| void onClipPath(const SkPath&, SkClipOp, ClipEdgeStyle) override; |
| void onClipShader(sk_sp<SkShader>, SkClipOp) override; |
| void onClipRegion(const SkRegion&, SkClipOp) override; |
| |
| private: |
| void clipToZOrderedBounds(); |
| |
| struct CanvasData { |
| SkIPoint origin; |
| SkRegion requiredClip; |
| std::unique_ptr<SkCanvas> ownedCanvas; |
| }; |
| |
| SkTArray<CanvasData> fCanvasData; |
| |
| using INHERITED = SkNWayCanvas; |
| }; |
| |
| #endif |