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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkRRectsGaussianEdgeShader_DEFINED
#define SkRRectsGaussianEdgeShader_DEFINED
#include "SkShader.h"
class SkRRect;
class SK_API SkRRectsGaussianEdgeShader {
public:
/** Returns a shader that applies a Gaussian blur depending on distance to the edge
* of the intersection of two round rects.
* Currently this is only useable with round rects that have the same radii at
* all the corners and for which the x & y radii are equal.
* Raster will draw nothing.
*
* The coverage geometry that should be drawn should be no larger than the intersection
* of the bounding boxes of the two round rects. Ambitious users can omit the center
* area of the coverage geometry if it is known to be occluded.
*/
static sk_sp<SkShader> Make(const SkRRect& first,
const SkRRect& second,
SkScalar radius, SkScalar unused = 0.0f);
SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
private:
SkRRectsGaussianEdgeShader(); // can't be instantiated
};
#endif
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