63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
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/*
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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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#pragma once
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#include "GrRecordingContext.h"
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#include <effects/StretchEffect.h>
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#include <SkSurface.h>
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#include "SkiaDisplayList.h"
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namespace android::uirenderer {
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/**
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* Helper class used to create/cache an SkSurface instance
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* to create a mask that is used to draw a stretched hole punch
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*/
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class StretchMask {
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public:
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/**
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* Release the current surface used for the stretch mask
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*/
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void clear() {
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mMaskSurface = nullptr;
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}
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/**
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* Reset the dirty flag to re-create the stretch mask on the next draw
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* pass
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*/
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void markDirty() {
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mIsDirty = true;
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}
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/**
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* Draws the stretch mask into the given target canvas
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* @param context GrRecordingContext used to create the surface if necessary
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* @param stretch StretchEffect to apply to the mask
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* @param bounds Target bounds to draw into the given canvas
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* @param displayList List of drawing commands to render into the stretch mask
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* @param canvas Target canvas to draw the mask into
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*/
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void draw(GrRecordingContext* context,
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const StretchEffect& stretch, const SkRect& bounds,
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skiapipeline::SkiaDisplayList* displayList, SkCanvas* canvas);
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private:
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sk_sp<SkSurface> mMaskSurface;
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bool mIsDirty = true;
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};
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}
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