SkBlurImageFilter.h revision cac5fd597f6e2495f50aaa6bcbe3dadc56f0b977
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 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 virtual void computeFastBounds(const SkRect&, SkRect*) const SK_OVERRIDE; 24 25 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurImageFilter) 26 27protected: 28 explicit SkBlurImageFilter(SkReadBuffer& buffer); 29 virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE; 30 31 virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, 32 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 33 virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&, 34 SkIRect* dst) const SK_OVERRIDE; 35 36 bool canFilterImageGPU() const SK_OVERRIDE { return true; } 37 virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm, 38 SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE; 39 40#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS 41public: 42#endif 43 SkBlurImageFilter(SkScalar sigmaX, 44 SkScalar sigmaY, 45 SkImageFilter* input = NULL, 46 const CropRect* cropRect = NULL); 47 48private: 49 SkSize fSigma; 50 typedef SkImageFilter INHERITED; 51}; 52 53#endif 54