54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_GRAPHICS_BLURDRAWLOOPER_H_
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#define ANDROID_GRAPHICS_BLURDRAWLOOPER_H_
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#include <hwui/Paint.h>
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#include <SkRefCnt.h>
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class SkColorSpace;
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namespace android {
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class BlurDrawLooper : public SkRefCnt {
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public:
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static sk_sp<BlurDrawLooper> Make(SkColor4f, SkColorSpace*, float blurSigma, SkPoint offset);
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~BlurDrawLooper() override;
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// proc(SkPoint offset, const Paint& modifiedPaint)
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template <typename DrawProc>
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void apply(const Paint& paint, DrawProc proc) const {
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Paint p(paint);
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proc(this->apply(&p), p); // draw the shadow
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proc({0, 0}, paint); // draw the original (on top)
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}
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private:
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const SkColor4f mColor;
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const float mBlurSigma;
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const SkPoint mOffset;
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SkPoint apply(Paint* paint) const;
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BlurDrawLooper(SkColor4f, float, SkPoint);
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};
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} // namespace android
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#endif // ANDROID_GRAPHICS_BLURDRAWLOOPER_H_
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