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 SkImageFilter* 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 new SkMergeImageFilter(inputs, 2, modes, cropRect); 25 } 26 27 static SkImageFilter* Create(SkImageFilter* filters[], int count, 28 const SkXfermode::Mode modes[] = NULL, 29 const CropRect* cropRect = NULL) { 30 return new SkMergeImageFilter(filters, count, modes, cropRect); 31 } 32 33 SK_TO_STRING_OVERRIDE() 34 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMergeImageFilter) 35 36 protected: 37 void flatten(SkWriteBuffer&) const override; 38 bool onFilterImageDeprecated(Proxy*, const SkBitmap& src, const Context&, SkBitmap* result, 39 SkIPoint* loc) const override; 40 41 private: 42 SkMergeImageFilter(SkImageFilter* filters[], int count, const SkXfermode::Mode modes[], 43 const CropRect* cropRect); 44 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
