effects/SkBlurImageFilter.h

/*
 * Copyright 2011 The Android Open Source Project
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkBlurImageFilter_DEFINED
#define SkBlurImageFilter_DEFINED

#include "SkImageFilter.h"
#include "SkSize.h"

class SK_API SkBlurImageFilter : public SkImageFilter {
public:
    SkBlurImageFilter(SkScalar sigmaX,
                      SkScalar sigmaY,
                      SkImageFilter* input = NULL,
                      const SkIRect* cropRect = NULL);

    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurImageFilter)

protected:
    explicit SkBlurImageFilter(SkFlattenableReadBuffer& buffer);
    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;

    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
                               SkBitmap* result, SkIPoint* offset) SK_OVERRIDE;

    bool canFilterImageGPU() const SK_OVERRIDE { return true; }
    virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, SkBitmap* result,
                                SkIPoint* offset) SK_OVERRIDE;

private:
    SkSize   fSigma;
    typedef SkImageFilter INHERITED;
};

#endif