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// Copyright 2014 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 "remoting/host/local_input_monitor.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/macros.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/non_thread_safe.h"
#include "remoting/host/chromeos/point_transformer.h"
#include "remoting/host/client_session_control.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
#include "ui/events/event.h"
#include "ui/events/event_utils.h"
#include "ui/events/keycodes/keyboard_codes.h"
#include "ui/events/platform/platform_event_observer.h"
#include "ui/events/platform/platform_event_source.h"
namespace remoting {
namespace {
class LocalInputMonitorChromeos : public LocalInputMonitor {
public:
LocalInputMonitorChromeos(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
base::WeakPtr<ClientSessionControl> client_session_control);
~LocalInputMonitorChromeos() override;
private:
class Core : ui::PlatformEventObserver {
public:
Core(scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
base::WeakPtr<ClientSessionControl> client_session_control);
~Core() override;
void Start();
// ui::PlatformEventObserver interface.
void WillProcessEvent(const ui::PlatformEvent& event) override;
void DidProcessEvent(const ui::PlatformEvent& event) override;
private:
void HandleMouseMove(const ui::PlatformEvent& event);
void HandleKeyPressed(const ui::PlatformEvent& event);
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner_;
// Points to the object receiving mouse event notifications and session
// disconnect requests. Must be called on the |caller_task_runner_|.
base::WeakPtr<ClientSessionControl> client_session_control_;
// Used to rotate the local mouse positions appropriately based on the
// current display rotation settings.
scoped_ptr<PointTransformer> point_transformer_;
DISALLOW_COPY_AND_ASSIGN(Core);
};
// Task runner on which ui::events are received.
scoped_refptr<base::SingleThreadTaskRunner> input_task_runner_;
scoped_ptr<Core> core_;
DISALLOW_COPY_AND_ASSIGN(LocalInputMonitorChromeos);
};
LocalInputMonitorChromeos::LocalInputMonitorChromeos(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
base::WeakPtr<ClientSessionControl> client_session_control)
: input_task_runner_(input_task_runner),
core_(new Core(caller_task_runner, client_session_control)) {
input_task_runner_->PostTask(
FROM_HERE, base::Bind(&Core::Start, base::Unretained(core_.get())));
}
LocalInputMonitorChromeos::~LocalInputMonitorChromeos() {
input_task_runner_->DeleteSoon(FROM_HERE, core_.release());
}
LocalInputMonitorChromeos::Core::Core(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
base::WeakPtr<ClientSessionControl> client_session_control)
: caller_task_runner_(caller_task_runner),
client_session_control_(client_session_control) {
DCHECK(client_session_control_.get());
}
void LocalInputMonitorChromeos::Core::Start() {
ui::PlatformEventSource::GetInstance()->AddPlatformEventObserver(this);
point_transformer_.reset(new PointTransformer());
}
LocalInputMonitorChromeos::Core::~Core() {
ui::PlatformEventSource::GetInstance()->RemovePlatformEventObserver(this);
}
void LocalInputMonitorChromeos::Core::WillProcessEvent(
const ui::PlatformEvent& event) {
// No need to handle this callback.
}
void LocalInputMonitorChromeos::Core::DidProcessEvent(
const ui::PlatformEvent& event) {
ui::EventType type = ui::EventTypeFromNative(event);
if (type == ui::ET_MOUSE_MOVED) {
HandleMouseMove(event);
} else if (type == ui::ET_KEY_PRESSED) {
HandleKeyPressed(event);
}
}
void LocalInputMonitorChromeos::Core::HandleMouseMove(
const ui::PlatformEvent& event) {
auto mouse_position = gfx::PointF(ui::EventLocationFromNative(event));
mouse_position = point_transformer_->FromScreenCoordinates(mouse_position);
caller_task_runner_->PostTask(
FROM_HERE,
base::Bind(
&ClientSessionControl::OnLocalMouseMoved, client_session_control_,
webrtc::DesktopVector(mouse_position.x(), mouse_position.y())));
}
void LocalInputMonitorChromeos::Core::HandleKeyPressed(
const ui::PlatformEvent& event) {
ui::KeyEvent key_event(event);
DCHECK(key_event.is_char());
if (key_event.IsControlDown() && key_event.IsAltDown() &&
key_event.key_code() == ui::VKEY_ESCAPE) {
caller_task_runner_->PostTask(
FROM_HERE, base::Bind(&ClientSessionControl::DisconnectSession,
client_session_control_, protocol::OK));
}
}
} // namespace
scoped_ptr<LocalInputMonitor> LocalInputMonitor::Create(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
base::WeakPtr<ClientSessionControl> client_session_control) {
return make_scoped_ptr(new LocalInputMonitorChromeos(
caller_task_runner, input_task_runner, client_session_control));
}
} // namespace remoting
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