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 "include/core/SkBlurTypes.h" 12 #include "src/core/SkClipStack.h" 13 #include "src/core/SkDevice.h" 14 15 class SkClipStackDevice : public SkBaseDevice { 16 public: SkClipStackDevice(const SkImageInfo & info,const SkSurfaceProps & props)17 SkClipStackDevice(const SkImageInfo& info, const SkSurfaceProps& props) 18 : SkBaseDevice(info, props) 19 , fClipStack(fStorage, sizeof(fStorage)) 20 {} 21 cs()22 SkClipStack& cs() { return fClipStack; } cs()23 const SkClipStack& cs() const { return fClipStack; } 24 25 protected: 26 void onSave() override; 27 void onRestore() override; 28 void onClipRect(const SkRect& rect, SkClipOp, bool aa) override; 29 void onClipRRect(const SkRRect& rrect, SkClipOp, bool aa) override; 30 void onClipPath(const SkPath& path, SkClipOp, bool aa) override; 31 void onClipShader(sk_sp<SkShader>) override; 32 void onClipRegion(const SkRegion& deviceRgn, SkClipOp) override; 33 void onReplaceClip(const SkIRect& rect) override; 34 bool onClipIsAA() const override; 35 bool onClipIsWideOpen() const override; 36 void onAsRgnClip(SkRegion*) const override; 37 ClipType onGetClipType() const override; 38 SkIRect onDevClipBounds() const override; 39 drawBlurImage(const SkImage * image,const SkBlurArg & blurArg)40 bool drawBlurImage(const SkImage* image, const SkBlurArg& blurArg) override { return false; } 41 42 private: 43 enum { 44 kPreallocCount = 16 // empirically determined, adjust as needed to reduce mallocs 45 }; 46 intptr_t fStorage[kPreallocCount * sizeof(SkClipStack::Element) / sizeof(intptr_t)]; 47 SkClipStack fClipStack; 48 49 using INHERITED = SkBaseDevice; 50 }; 51 52 #endif 53