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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_DISPLAY_DISPLAY_CONTROLLER_H_
#define ASH_DISPLAY_DISPLAY_CONTROLLER_H_
#include <map>
#include <vector>
#include "ash/ash_export.h"
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "ui/aura/display_observer.h"
#include "ui/aura/display_manager.h"
namespace aura {
class Display;
class RootWindow;
}
namespace ash {
namespace internal {
class RootWindowController;
// DisplayController owns and maintains RootWindows for each attached
// display, keeping them in sync with display configuration changes.
class ASH_EXPORT DisplayController : public aura::DisplayObserver {
public:
// Layout options where the secondary display should be positioned.
enum SecondaryDisplayLayout {
TOP,
RIGHT,
BOTTOM,
LEFT
};
DisplayController();
virtual ~DisplayController();
// Initializes primary display.
void InitPrimaryDisplay();
// Initialize secondary displays.
void InitSecondaryDisplays();
// Returns the root window for primary display.
aura::RootWindow* GetPrimaryRootWindow();
// Returns the root window for |display_id|.
aura::RootWindow* GetRootWindowForDisplayId(int64 id);
// Closes all child windows in the all root windows.
void CloseChildWindows();
// Returns all root windows. In non extended desktop mode, this
// returns the primary root window only.
std::vector<aura::RootWindow*> GetAllRootWindows();
// Returns all oot window controllers. In non extended desktop
// mode, this return a RootWindowController for the primary root window only.
std::vector<internal::RootWindowController*> GetAllRootWindowControllers();
SecondaryDisplayLayout secondary_display_layout() const {
return secondary_display_layout_;
}
void SetSecondaryDisplayLayout(SecondaryDisplayLayout layout);
int secondary_display_offset() const {
return secondary_display_offset_;
}
void SetSecondaryDisplayOffset(int offset);
void set_dont_warp_mouse(bool dont_warp_mouse) {
dont_warp_mouse_ = dont_warp_mouse;
}
// Warps the mouse cursor to an alternate root window when the
// |point_in_root|, which is the location of the mouse cursor,
// hits or exceeds the edge of the |root_window| and the mouse cursor
// is considered to be in an alternate display. Returns true if
// the cursor was moved.
bool WarpMouseCursorIfNecessary(aura::RootWindow* root_window,
const gfx::Point& point_in_root);
// aura::DisplayObserver overrides:
virtual void OnDisplayBoundsChanged(
const gfx::Display& display) OVERRIDE;
virtual void OnDisplayAdded(const gfx::Display& display) OVERRIDE;
virtual void OnDisplayRemoved(const gfx::Display& display) OVERRIDE;
private:
FRIEND_TEST_ALL_PREFIXES(WorkspaceWindowResizerTest, WarpMousePointer);
// Creates a root window for |display| and stores it in the |root_windows_|
// map.
aura::RootWindow* AddRootWindowForDisplay(const gfx::Display& display);
void UpdateDisplayBoundsForLayout();
// The mapping from display ID to its root window.
std::map<int64, aura::RootWindow*> root_windows_;
SecondaryDisplayLayout secondary_display_layout_;
// The offset of the position of the secondary display. The offset is
// based on the top/left edge of the primary display.
int secondary_display_offset_;
// If true, the mouse pointer can't move from one display to another.
bool dont_warp_mouse_;
DISALLOW_COPY_AND_ASSIGN(DisplayController);
};
} // namespace internal
} // namespace ash
#endif // ASH_DISPLAY_DISPLAY_CONTROLLER_H_
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