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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/animationworklet/animation_worklet_proxy_client_impl.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/web_frame_widget_base.h"
#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
#include "third_party/blink/renderer/core/workers/worker_thread.h"
#include "third_party/blink/renderer/platform/cross_thread_functional.h"
#include "third_party/blink/renderer/platform/graphics/compositor_mutator_impl.h"
namespace blink {
AnimationWorkletProxyClientImpl::AnimationWorkletProxyClientImpl(
base::WeakPtr<CompositorMutatorImpl> mutator,
scoped_refptr<base::SingleThreadTaskRunner> mutator_runner)
: mutator_(std::move(mutator)),
mutator_runner_(std::move(mutator_runner)),
state_(RunState::kUninitialized) {
DCHECK(IsMainThread());
}
void AnimationWorkletProxyClientImpl::Trace(blink::Visitor* visitor) {
AnimationWorkletProxyClient::Trace(visitor);
CompositorAnimator::Trace(visitor);
}
void AnimationWorkletProxyClientImpl::SetGlobalScope(
WorkletGlobalScope* global_scope) {
DCHECK(global_scope);
DCHECK(global_scope->IsContextThread());
if (state_ == RunState::kDisposed)
return;
DCHECK(state_ == RunState::kUninitialized);
global_scope_ = static_cast<AnimationWorkletGlobalScope*>(global_scope);
// TODO(majidvp): Add an AnimationWorklet task type when the spec is final.
scoped_refptr<base::SingleThreadTaskRunner> global_runner_ =
global_scope_->GetThread()->GetTaskRunner(TaskType::kMiscPlatformAPI);
state_ = RunState::kWorking;
DCHECK(mutator_runner_);
PostCrossThreadTask(
*mutator_runner_, FROM_HERE,
CrossThreadBind(&CompositorMutatorImpl::RegisterCompositorAnimator,
mutator_, WrapCrossThreadPersistent(this),
global_runner_));
}
void AnimationWorkletProxyClientImpl::Dispose() {
if (state_ == RunState::kWorking) {
// At worklet scope termination break the reference to the Client from
// the compositor if it is still alive.
DCHECK(mutator_runner_);
PostCrossThreadTask(
*mutator_runner_, FROM_HERE,
CrossThreadBind(&CompositorMutatorImpl::UnregisterCompositorAnimator,
mutator_, WrapCrossThreadPersistent(this)));
DCHECK(global_scope_);
DCHECK(global_scope_->IsContextThread());
// At worklet scope termination break the reference cycle between
// AnimationWorkletGlobalScope and AnimationWorkletProxyClientImpl.
global_scope_ = nullptr;
}
mutator_runner_ = nullptr;
DCHECK(state_ != RunState::kDisposed);
state_ = RunState::kDisposed;
}
std::unique_ptr<CompositorMutatorOutputState>
AnimationWorkletProxyClientImpl::Mutate(
const CompositorMutatorInputState& input_state) {
if (!global_scope_)
return nullptr;
auto output_state = global_scope_->Mutate(input_state);
// TODO(petermayo): https://crbug.com/791280 PostCrossThreadTask to supply
// this rather than return it.
return output_state;
}
// static
AnimationWorkletProxyClientImpl* AnimationWorkletProxyClientImpl::FromDocument(
Document* document) {
WebLocalFrameImpl* local_frame =
WebLocalFrameImpl::FromFrame(document->GetFrame());
scoped_refptr<base::SingleThreadTaskRunner> mutator_queue;
base::WeakPtr<CompositorMutatorImpl> mutator =
local_frame->LocalRootFrameWidget()->EnsureCompositorMutator(
&mutator_queue);
return new AnimationWorkletProxyClientImpl(std::move(mutator),
std::move(mutator_queue));
}
} // namespace blink
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