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