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, uint32_t uniqueID = 0) { 20 return SkNEW_ARGS(SkBlurImageFilter, (sigmaX, sigmaY, input, cropRect, uniqueID)); 21 } 22 23 virtual void computeFastBounds(const SkRect&, SkRect*) const SK_OVERRIDE; 24 25 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurImageFilter) 26 27 protected: 28 SkBlurImageFilter(SkScalar sigmaX, 29 SkScalar sigmaY, 30 SkImageFilter* input, 31 const CropRect* cropRect, 32 uint32_t uniqueID); 33 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING 34 explicit SkBlurImageFilter(SkReadBuffer& buffer); 35 #endif 36 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 37 38 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, 39 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 40 virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&, 41 SkIRect* dst) const SK_OVERRIDE; 42 43 bool canFilterImageGPU() const SK_OVERRIDE { return true; } 44 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx, 45 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 46 47 private: 48 SkSize fSigma; 49 typedef SkImageFilter INHERITED; 50 }; 51 52 #endif 53
