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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "Shader.h"
namespace android::uirenderer {
/**
* Shader implementation that blurs another Shader instance or the source bitmap
*/
class BlurShader : public Shader {
public:
/**
* Creates a BlurShader instance with the provided radius values to blur along the x and y
* axis accordingly.
*
* This will blur the contents of the provided input shader if it is non-null, otherwise
* the source bitmap will be blurred instead.
*
* The edge treatment parameter determines how content near the edges of the source is to
* participate in the blur
*/
BlurShader(float radiusX, float radiusY, Shader* inputShader, SkTileMode edgeTreatment,
const SkMatrix* matrix);
~BlurShader() override;
protected:
sk_sp<SkImageFilter> makeSkImageFilter() override;
private:
sk_sp<SkImageFilter> skImageFilter;
};
} // namespace android::uirenderer
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