1 /* 2 * Copyright 2012 The Android Open Source Project 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 SkBlendImageFilter_DEFINED 9 #define SkBlendImageFilter_DEFINED 10 11 #include "SkImageFilter.h" 12 #include "SkBitmap.h" 13 14 class SK_API SkBlendImageFilter : public SkImageFilter { 15 public: 16 enum Mode { 17 kNormal_Mode, 18 kMultiply_Mode, 19 kScreen_Mode, 20 kDarken_Mode, 21 kLighten_Mode, 22 }; 23 SkBlendImageFilter(Mode mode, SkImageFilter* background, SkImageFilter* foreground = NULL); 24 25 ~SkBlendImageFilter(); 26 27 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlendImageFilter) 28 29 virtual bool onFilterImage(Proxy* proxy, 30 const SkBitmap& src, 31 const SkMatrix& ctm, 32 SkBitmap* dst, 33 SkIPoint* offset) SK_OVERRIDE; 34 #if SK_SUPPORT_GPU canFilterImageGPU()35 virtual bool canFilterImageGPU() const SK_OVERRIDE { return true; } 36 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, SkBitmap* result) SK_OVERRIDE; 37 #endif 38 39 protected: 40 explicit SkBlendImageFilter(SkFlattenableReadBuffer& buffer); 41 virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; 42 43 private: 44 Mode fMode; 45 typedef SkImageFilter INHERITED; getBackgroundInput()46 SkImageFilter* getBackgroundInput() { return getInput(0); } getForegroundInput()47 SkImageFilter* getForegroundInput() { return getInput(1); } 48 }; 49 50 #endif 51