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114 lines
3.6 KiB
114 lines
3.6 KiB
/*
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* Copyright 2020 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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#include <ui/GraphicTypes.h>
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#include <ui/Transform.h>
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#include "ContainerLayer.h"
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#include "DisplayDevice.h"
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#include "Layer.h"
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#include "LayerRenderArea.h"
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#include "SurfaceFlinger.h"
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namespace android {
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namespace {
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void reparentForDrawing(const sp<Layer>& oldParent, const sp<Layer>& newParent,
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const Rect& drawingBounds) {
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// Compute and cache the bounds for the new parent layer.
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newParent->computeBounds(drawingBounds.toFloatRect(), ui::Transform(),
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0.f /* shadowRadius */);
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oldParent->setChildrenDrawingParent(newParent);
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};
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} // namespace
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LayerRenderArea::LayerRenderArea(SurfaceFlinger& flinger, sp<Layer> layer, const Rect& crop,
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ui::Size reqSize, ui::Dataspace reqDataSpace, bool childrenOnly,
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const Rect& layerStackRect, bool allowSecureLayers)
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: RenderArea(reqSize, CaptureFill::CLEAR, reqDataSpace, layerStackRect, allowSecureLayers),
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mLayer(std::move(layer)),
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mCrop(crop),
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mFlinger(flinger),
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mChildrenOnly(childrenOnly) {}
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const ui::Transform& LayerRenderArea::getTransform() const {
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return mTransform;
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}
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Rect LayerRenderArea::getBounds() const {
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return mLayer->getBufferSize(mLayer->getDrawingState());
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}
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int LayerRenderArea::getHeight() const {
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return mLayer->getBufferSize(mLayer->getDrawingState()).getHeight();
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}
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int LayerRenderArea::getWidth() const {
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return mLayer->getBufferSize(mLayer->getDrawingState()).getWidth();
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}
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bool LayerRenderArea::isSecure() const {
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return mAllowSecureLayers;
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}
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bool LayerRenderArea::needsFiltering() const {
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return mNeedsFiltering;
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}
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sp<const DisplayDevice> LayerRenderArea::getDisplayDevice() const {
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return nullptr;
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}
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Rect LayerRenderArea::getSourceCrop() const {
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if (mCrop.isEmpty()) {
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return getBounds();
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} else {
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return mCrop;
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}
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}
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void LayerRenderArea::render(std::function<void()> drawLayers) {
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using namespace std::string_literals;
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const Rect sourceCrop = getSourceCrop();
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// no need to check rotation because there is none
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mNeedsFiltering = sourceCrop.width() != getReqWidth() || sourceCrop.height() != getReqHeight();
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if (!mChildrenOnly) {
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mTransform = mLayer->getTransform().inverse();
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drawLayers();
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} else {
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uint32_t w = static_cast<uint32_t>(getWidth());
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uint32_t h = static_cast<uint32_t>(getHeight());
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// In the "childrenOnly" case we reparent the children to a screenshot
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// layer which has no properties set and which does not draw.
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sp<ContainerLayer> screenshotParentLayer = mFlinger.getFactory().createContainerLayer(
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{&mFlinger, nullptr, "Screenshot Parent"s, w, h, 0, LayerMetadata()});
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{
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Mutex::Autolock _l(mFlinger.mStateLock);
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reparentForDrawing(mLayer, screenshotParentLayer, sourceCrop);
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}
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drawLayers();
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{
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Mutex::Autolock _l(mFlinger.mStateLock);
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mLayer->setChildrenDrawingParent(mLayer);
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}
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}
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}
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} // namespace android
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