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7c3dcee2e9
This reverts commit fcc4ab32301396986dd5103d6d444bff35fe0f63. Fixes https://github.com/flutter/flutter/issues/41394 and other related correctness issues. TBR: @arbreng @jason-simmons @mehmetf
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/flow/layers/container_layer.h"
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namespace flutter {
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ContainerLayer::ContainerLayer() {}
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ContainerLayer::~ContainerLayer() = default;
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void ContainerLayer::Add(std::shared_ptr<Layer> layer) {
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layer->set_parent(this);
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layers_.push_back(std::move(layer));
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}
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void ContainerLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
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TRACE_EVENT0("flutter", "ContainerLayer::Preroll");
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SkRect child_paint_bounds = SkRect::MakeEmpty();
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PrerollChildren(context, matrix, &child_paint_bounds);
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set_paint_bounds(child_paint_bounds);
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}
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void ContainerLayer::PrerollChildren(PrerollContext* context,
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const SkMatrix& child_matrix,
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SkRect* child_paint_bounds) {
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for (auto& layer : layers_) {
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layer->Preroll(context, child_matrix);
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if (layer->needs_system_composite()) {
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set_needs_system_composite(true);
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}
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child_paint_bounds->join(layer->paint_bounds());
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}
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}
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void ContainerLayer::PaintChildren(PaintContext& context) const {
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FML_DCHECK(needs_painting());
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// Intentionally not tracing here as there should be no self-time
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// and the trace event on this common function has a small overhead.
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for (auto& layer : layers_) {
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if (layer->needs_painting()) {
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layer->Paint(context);
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}
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}
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}
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#if defined(OS_FUCHSIA)
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void ContainerLayer::UpdateScene(SceneUpdateContext& context) {
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UpdateSceneChildren(context);
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}
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void ContainerLayer::UpdateSceneChildren(SceneUpdateContext& context) {
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FML_DCHECK(needs_system_composite());
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// Paint all of the layers which need to be drawn into the container.
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// These may be flattened down to a containing
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for (auto& layer : layers_) {
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if (layer->needs_system_composite()) {
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layer->UpdateScene(context);
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}
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}
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}
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#endif // defined(OS_FUCHSIA)
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} // namespace flutter
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