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// Copyright (c) 2011 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 "content/renderer/gpu/compositor_thread.h"
#include "base/bind.h"
#include "content/renderer/gpu/input_event_filter.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositor.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositorClient.h"
using WebKit::WebCompositor;
using WebKit::WebInputEvent;
//------------------------------------------------------------------------------
class CompositorThread::CompositorWrapper : public WebKit::WebCompositorClient {
public:
CompositorWrapper(CompositorThread* compositor_thread,
int routing_id,
WebKit::WebCompositor* compositor)
: compositor_thread_(compositor_thread),
routing_id_(routing_id),
compositor_(compositor) {
compositor_->setClient(this);
}
virtual ~CompositorWrapper() {
compositor_->setClient(NULL);
}
int routing_id() const { return routing_id_; }
WebKit::WebCompositor* compositor() const { return compositor_; }
// WebCompositorClient methods:
virtual void willShutdown() {
compositor_thread_->RemoveCompositor(routing_id_);
}
virtual void didHandleInputEvent() {
compositor_thread_->filter_->DidHandleInputEvent();
}
virtual void didNotHandleInputEvent(bool send_to_widget) {
compositor_thread_->filter_->DidNotHandleInputEvent(send_to_widget);
}
private:
CompositorThread* compositor_thread_;
int routing_id_;
WebKit::WebCompositor* compositor_;
DISALLOW_COPY_AND_ASSIGN(CompositorWrapper);
};
//------------------------------------------------------------------------------
CompositorThread::CompositorThread(IPC::Channel::Listener* main_listener)
: thread_("Compositor") {
filter_ =
new InputEventFilter(main_listener,
thread_.message_loop()->message_loop_proxy(),
base::Bind(&CompositorThread::HandleInputEvent,
base::Unretained(this)));
WebCompositor::setThread(&thread_);
}
CompositorThread::~CompositorThread() {
}
IPC::ChannelProxy::MessageFilter* CompositorThread::GetMessageFilter() const {
return filter_;
}
void CompositorThread::AddCompositor(int routing_id, int compositor_id) {
if (thread_.message_loop() != MessageLoop::current()) {
thread_.message_loop()->PostTask(
FROM_HERE,
base::Bind(&CompositorThread::AddCompositor, base::Unretained(this),
routing_id, compositor_id));
return;
}
WebCompositor* compositor = WebCompositor::fromIdentifier(compositor_id);
if (!compositor)
return;
filter_->AddRoute(routing_id);
compositors_[routing_id] =
make_linked_ptr(new CompositorWrapper(this, routing_id, compositor));
}
void CompositorThread::RemoveCompositor(int routing_id) {
DCHECK(thread_.message_loop() == MessageLoop::current());
filter_->RemoveRoute(routing_id);
compositors_.erase(routing_id);
}
void CompositorThread::HandleInputEvent(
int routing_id,
const WebInputEvent* input_event) {
DCHECK_EQ(MessageLoop::current(), thread_.message_loop());
CompositorMap::iterator it = compositors_.find(routing_id);
if (it == compositors_.end()) {
// Oops, we no longer have an interested compositor.
filter_->DidNotHandleInputEvent(true);
return;
}
it->second->compositor()->handleInputEvent(*input_event);
}
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