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49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
// Copyright 2015 The Chromium 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 flow {
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ContainerLayer::ContainerLayer() {}
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ContainerLayer::~ContainerLayer() {}
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void ContainerLayer::Add(std::unique_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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PrerollChildren(context, matrix);
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set_paint_bounds(context->child_paint_bounds);
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}
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void ContainerLayer::PrerollChildren(PrerollContext* context,
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const SkMatrix& matrix) {
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SkRect child_paint_bounds;
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for (auto& layer : layers_) {
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PrerollContext child_context = *context;
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layer->Preroll(&child_context, matrix);
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child_paint_bounds.join(child_context.child_paint_bounds);
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}
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context->child_paint_bounds = child_paint_bounds;
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}
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void ContainerLayer::PaintChildren(PaintContext& context) const {
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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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layer->Paint(context);
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}
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void ContainerLayer::UpdateScene(mojo::gfx::composition::SceneUpdate* update,
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mojo::gfx::composition::Node* container) {
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for (auto& layer : layers_)
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layer->UpdateScene(update, container);
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}
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} // namespace flow
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