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// Copyright (c) 2012 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.
#ifndef ASH_MONITOR_MULTI_MONITOR_MANAGER_H_
#define ASH_MONITOR_MULTI_MONITOR_MANAGER_H_
#pragma once
#include "ash/ash_export.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "ui/aura/monitor_manager.h"
#include "ui/aura/root_window_observer.h"
#include "ui/aura/window.h"
#include "ui/aura/window_observer.h"
namespace ash {
namespace internal {
// MultiMonitorManager maintains the current monitor configurations,
// and notifies observers when configuration changes.
// This is exported for unittest.
//
// TODO(oshima): gfx::Screen needs to return translated coordinates
// if the root window is translated. crbug.com/119268.
class ASH_EXPORT MultiMonitorManager : public aura::MonitorManager,
public aura::RootWindowObserver,
public aura::WindowObserver {
public:
MultiMonitorManager();
virtual ~MultiMonitorManager();
// Used to emulate monitor change when run in a desktop environment instead
// of on a device.
static void AddRemoveMonitor();
static void CycleMonitor();
// MonitorManager overrides:
virtual void OnNativeMonitorsChanged(
const std::vector<const aura::Monitor*>& monitors) OVERRIDE;
virtual aura::RootWindow* CreateRootWindowForMonitor(
aura::Monitor* monitor) OVERRIDE;
virtual const aura::Monitor* GetMonitorNearestWindow(
const aura::Window* window) const OVERRIDE;
virtual const aura::Monitor* GetMonitorNearestPoint(
const gfx::Point& point) const OVERRIDE;
virtual aura::Monitor* GetMonitorAt(size_t index) OVERRIDE;
virtual size_t GetNumMonitors() const OVERRIDE;
virtual aura::Monitor* GetMonitorNearestWindow(
const aura::Window* window) OVERRIDE;
// RootWindowObserver overrides:
virtual void OnRootWindowResized(const aura::RootWindow* root,
const gfx::Size& new_size) OVERRIDE;
// WindowObserver overrides:
virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
private:
typedef std::vector<aura::Monitor*> Monitors;
void Init();
void AddRemoveMonitorImpl();
void CycleMonitorImpl();
Monitors monitors_;
DISALLOW_COPY_AND_ASSIGN(MultiMonitorManager);
};
extern const aura::WindowProperty<aura::Monitor*>* const kMonitorKey;
} // namespace internal
} // namespace ash
#endif // ASH_MONITOR_MULTI_MONITOR_MANAGER_H_
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