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 SkMergeImageFilter_DEFINED 9 #define SkMergeImageFilter_DEFINED 10 11 #include "SkImageFilter.h" 12 13 #include "SkXfermode.h" 14 15 class SK_API SkMergeImageFilter : public SkImageFilter { 16 public: 17 virtual ~SkMergeImageFilter(); 18 19 static SkMergeImageFilter* Create(SkImageFilter* first, SkImageFilter* second, 20 SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode, 21 const CropRect* cropRect = NULL) { 22 SkImageFilter* inputs[2] = { first, second }; 23 SkXfermode::Mode modes[2] = { mode, mode }; 24 return SkNEW_ARGS(SkMergeImageFilter, (inputs, 2, modes, cropRect)); 25 } 26 static SkMergeImageFilter* Create(SkImageFilter* filters[], int count, 27 const SkXfermode::Mode modes[] = NULL, 28 const CropRect* cropRect = NULL) { 29 return SkNEW_ARGS(SkMergeImageFilter, (filters, count, modes, cropRect)); 30 } 31 32 SK_TO_STRING_OVERRIDE() 33 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMergeImageFilter) 34 35 protected: 36 SkMergeImageFilter(SkImageFilter* filters[], int count, 37 const SkXfermode::Mode modes[], 38 const CropRect* cropRect); 39 void flatten(SkWriteBuffer&) const override; 40 41 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 42 SkBitmap* result, SkIPoint* loc) const override; 43 44 private: 45 uint8_t* fModes; // SkXfermode::Mode 46 47 // private storage, to avoid dynamically allocating storage for our copy 48 // of the modes (unless the count is so large we can't fit). 49 intptr_t fStorage[16]; 50 51 void initAllocModes(); 52 void initModes(const SkXfermode::Mode []); 53 54 typedef SkImageFilter INHERITED; 55 }; 56 57 #endif 58