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Nader Jawad322cb9c2020-08-17 17:15:54 -07001/*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#pragma once
18#include "Shader.h"
19
20namespace android::uirenderer {
21
22/**
23 * Shader implementation that blurs another Shader instance or the source bitmap
24 */
25class BlurShader : public Shader {
26public:
27 /**
28 * Creates a BlurShader instance with the provided radius values to blur along the x and y
29 * axis accordingly.
30 *
31 * This will blur the contents of the provided input shader if it is non-null, otherwise
32 * the source bitmap will be blurred instead.
33 */
34 BlurShader(float radiusX, float radiusY, Shader* inputShader, const SkMatrix* matrix);
35 ~BlurShader() override;
36protected:
37 sk_sp<SkImageFilter> makeSkImageFilter() override;
38private:
39 sk_sp<SkImageFilter> skImageFilter;
40};
41
42} // namespace android::uirenderer