1 /* 2 * Copyright 2013 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 SkXfermodeImageFilter_DEFINED 9 #define SkXfermodeImageFilter_DEFINED 10 11 #include "SkImageFilter.h" 12 13 class SkBitmap; 14 class SkXfermode; 15 16 class SK_API SkXfermodeImageFilter : public SkImageFilter { 17 /** 18 * This filter takes an xfermode, and uses it to composite the foreground 19 * over the background. If foreground or background is NULL, the input 20 * bitmap (src) is used instead. 21 */ 22 23 public: 24 virtual ~SkXfermodeImageFilter(); 25 26 static SkXfermodeImageFilter* Create(SkXfermode* mode, SkImageFilter* background, 27 SkImageFilter* foreground = NULL, 28 const CropRect* cropRect = NULL, 29 uint32_t uniqueID = 0) { 30 SkImageFilter* inputs[2] = { background, foreground }; 31 return SkNEW_ARGS(SkXfermodeImageFilter, (mode, inputs, cropRect, uniqueID)); 32 } 33 34 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkXfermodeImageFilter) 35 36 virtual bool onFilterImage(Proxy* proxy, 37 const SkBitmap& src, 38 const Context& ctx, 39 SkBitmap* dst, 40 SkIPoint* offset) const SK_OVERRIDE; 41 #if SK_SUPPORT_GPU 42 virtual bool canFilterImageGPU() const SK_OVERRIDE; 43 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx, 44 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 45 #endif 46 47 protected: 48 SkXfermodeImageFilter(SkXfermode* mode, SkImageFilter* inputs[2], 49 const CropRect* cropRect, uint32_t uniqueID); 50 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING 51 explicit SkXfermodeImageFilter(SkReadBuffer& buffer); 52 #endif 53 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 54 55 private: 56 SkXfermode* fMode; 57 typedef SkImageFilter INHERITED; 58 }; 59 60 #endif 61
