1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkClipStackDevice_DEFINED 9 #define SkClipStackDevice_DEFINED 10 11 #include "src/core/SkClipStack.h" 12 #include "src/core/SkDevice.h" 13 14 class SkClipStackDevice : public SkBaseDevice { 15 public: SkClipStackDevice(const SkImageInfo & info,const SkSurfaceProps & props)16 SkClipStackDevice(const SkImageInfo& info, const SkSurfaceProps& props) 17 : SkBaseDevice(info, props) 18 , fClipStack(fStorage, sizeof(fStorage)) 19 {} 20 cs()21 SkClipStack& cs() { return fClipStack; } cs()22 const SkClipStack& cs() const { return fClipStack; } 23 24 protected: 25 void onSave() override; 26 void onRestore() override; 27 void onClipRect(const SkRect& rect, SkClipOp, bool aa) override; 28 void onClipRRect(const SkRRect& rrect, SkClipOp, bool aa) override; 29 void onClipPath(const SkPath& path, SkClipOp, bool aa) override; 30 void onClipShader(sk_sp<SkShader>) override; 31 void onClipRegion(const SkRegion& deviceRgn, SkClipOp) override; 32 void onReplaceClip(const SkIRect& rect) override; 33 bool onClipIsAA() const override; 34 bool onClipIsWideOpen() const override; 35 void onAsRgnClip(SkRegion*) const override; 36 ClipType onGetClipType() const override; 37 SkIRect onDevClipBounds() const override; 38 39 private: 40 enum { 41 kPreallocCount = 16 // empirically determined, adjust as needed to reduce mallocs 42 }; 43 intptr_t fStorage[kPreallocCount * sizeof(SkClipStack::Element) / sizeof(intptr_t)]; 44 SkClipStack fClipStack; 45 46 using INHERITED = SkBaseDevice; 47 }; 48 49 #endif 50