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f6d9154d24
The behavior of SetTranslation() is now in its final state so we can migrate back off the temporary function.
85 lines
2.7 KiB
C++
85 lines
2.7 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/export_node.h"
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#include "flutter/fml/make_copyable.h"
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namespace flow {
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ExportNodeHolder::ExportNodeHolder(
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fml::RefPtr<fml::TaskRunner> gpu_task_runner,
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fml::RefPtr<zircon::dart::Handle> export_token_handle)
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: gpu_task_runner_(std::move(gpu_task_runner)),
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export_node_(std::make_unique<ExportNode>(export_token_handle)) {
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FML_DCHECK(gpu_task_runner_);
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}
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void ExportNodeHolder::Bind(SceneUpdateContext& context,
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scenic::ContainerNode& container,
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const SkPoint& offset,
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bool hit_testable) {
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export_node_->Bind(context, container, offset, hit_testable);
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}
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ExportNodeHolder::~ExportNodeHolder() {
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gpu_task_runner_->PostTask(
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fml::MakeCopyable([export_node = std::move(export_node_)]() {
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export_node->Dispose(true);
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}));
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}
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ExportNode::ExportNode(fml::RefPtr<zircon::dart::Handle> export_token_handle)
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: export_token_(export_token_handle->ReleaseHandle()) {}
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ExportNode::~ExportNode() {
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// Ensure that we properly released the node.
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FML_DCHECK(!node_);
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FML_DCHECK(scene_update_context_ == nullptr);
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}
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void ExportNode::Bind(SceneUpdateContext& context,
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scenic::ContainerNode& container,
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const SkPoint& offset,
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bool hit_testable) {
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if (export_token_) {
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// Happens first time we bind.
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node_.reset(new scenic::EntityNode(container.session()));
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node_->Export(std::move(export_token_));
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// Add ourselves to the context so it can call Dispose() on us if the Scenic
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// session is closed.
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context.AddExportNode(this);
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scene_update_context_ = &context;
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}
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if (node_) {
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container.AddChild(*node_);
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node_->SetTranslation(offset.x(), offset.y(), 0.f);
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node_->SetHitTestBehavior(
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hit_testable ? fuchsia::ui::gfx::HitTestBehavior::kDefault
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: fuchsia::ui::gfx::HitTestBehavior::kSuppress);
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}
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}
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void ExportNode::Dispose(bool remove_from_scene_update_context) {
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// If scene_update_context_ is set, then we should still have a node left to
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// dereference.
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// If scene_update_context_ is null, then either:
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// 1. A node was never created, or
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// 2. A node was created but was already dereferenced (i.e. Dispose has
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// already been called).
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FML_DCHECK(scene_update_context_ || !node_);
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if (remove_from_scene_update_context && scene_update_context_) {
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scene_update_context_->RemoveExportNode(this);
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}
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scene_update_context_ = nullptr;
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export_token_.reset();
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node_ = nullptr;
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}
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} // namespace flow
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