SkBlurImageFilter.h revision ae761f7545d8ebf181d220169afac2056b057b8c
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 14class SK_API SkBlurImageFilter : public SkImageFilter { 15public: 16 SkBlurImageFilter(SkScalar sigmaX, 17 SkScalar sigmaY, 18 SkImageFilter* input = NULL, 19 const CropRect* cropRect = NULL); 20 virtual void computeFastBounds(const SkRect&, SkRect*) const SK_OVERRIDE; 21 22 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurImageFilter) 23 24protected: 25 explicit SkBlurImageFilter(SkReadBuffer& buffer); 26 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 27 28 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, 29 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 30 virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&, 31 SkIRect* dst) const SK_OVERRIDE; 32 33 bool canFilterImageGPU() const SK_OVERRIDE { return true; } 34 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm, 35 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 36 37private: 38 SkSize fSigma; 39 typedef SkImageFilter INHERITED; 40}; 41 42#endif 43