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/*
* Copyright 2006 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 SkBlurMask_DEFINED
#define SkBlurMask_DEFINED
#include "SkShader.h"
#include "SkMask.h"
class SkBlurMask {
public:
enum Style {
kNormal_Style, //!< fuzzy inside and outside
kSolid_Style, //!< solid inside, fuzzy outside
kOuter_Style, //!< nothing inside, fuzzy outside
kInner_Style, //!< fuzzy inside, nothing outside
kStyleCount
};
enum Quality {
kLow_Quality, //!< box blur
kHigh_Quality //!< three pass box blur (similar to gaussian)
};
static bool BlurRect(SkMask *dst, const SkRect &src,
SkScalar radius, Style style,
SkIPoint *margin = NULL,
SkMask::CreateMode createMode=SkMask::kComputeBoundsAndRenderImage_CreateMode);
static bool Blur(SkMask* dst, const SkMask& src,
SkScalar radius, Style style, Quality quality,
SkIPoint* margin = NULL);
static bool BlurSeparable(SkMask* dst, const SkMask& src,
SkScalar radius, Style style, Quality quality,
SkIPoint* margin = NULL);
// the "ground truth" blur does a gaussian convolution; it's slow
// but useful for comparison purposes.
static bool BlurGroundTruth(SkMask* dst, const SkMask& src,
SkScalar provided_radius, Style style,
SkIPoint* margin = NULL);
private:
static bool Blur(SkMask* dst, const SkMask& src,
SkScalar radius, Style style, Quality quality,
SkIPoint* margin, bool separable);
};
#endif
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