1 /* 2 * Copyright 2011 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 SkBlurImageFilter_DEFINED 9 #define SkBlurImageFilter_DEFINED 10 11 #include "SkImageFilter.h" 12 #include "SkSize.h" 13 14 class SK_API SkBlurImageFilter : public SkImageFilter { 15 public: 16 static SkBlurImageFilter* Create(SkScalar sigmaX, 17 SkScalar sigmaY, 18 SkImageFilter* input = NULL, 19 const CropRect* cropRect = NULL) { 20 return SkNEW_ARGS(SkBlurImageFilter, (sigmaX, sigmaY, input, cropRect)); 21 } 22 23 void computeFastBounds(const SkRect&, SkRect*) const override; 24 25 SK_TO_STRING_OVERRIDE() 26 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurImageFilter) 27 28 protected: 29 SkBlurImageFilter(SkScalar sigmaX, 30 SkScalar sigmaY, 31 SkImageFilter* input, 32 const CropRect* cropRect); 33 void flatten(SkWriteBuffer&) const override; 34 35 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 36 SkBitmap* result, SkIPoint* offset) const override; 37 virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&, 38 SkIRect* dst) const override; 39 40 bool canFilterImageGPU() const override { return true; } 41 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx, 42 SkBitmap* result, SkIPoint* offset) const override; 43 44 private: 45 SkSize fSigma; 46 typedef SkImageFilter INHERITED; 47 }; 48 49 #endif 50
