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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_MANAGER_H_
#define ASH_DISPLAY_DISPLAY_MANAGER_H_
#include <string>
#include <vector>
#include "ash/ash_export.h"
#include "ash/display/display_info.h"
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "ui/aura/root_window_observer.h"
#include "ui/aura/window.h"
namespace gfx {
class Display;
class Insets;
class Rect;
}
namespace ash {
class AcceleratorControllerTest;
namespace test {
class DisplayManagerTestApi;
class SystemGestureEventFilterTest;
}
namespace internal {
// DisplayManager maintains the current display 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 DisplayManager : public aura::RootWindowObserver {
public:
DisplayManager();
virtual ~DisplayManager();
// Used to emulate display change when run in a desktop environment instead
// of on a device.
static void CycleDisplay();
static void ToggleDisplayScale();
// When set to true, the MonitorManager calls OnDisplayBoundsChanged
// even if the display's bounds didn't change. Used to swap primary
// display.
void set_force_bounds_changed(bool force_bounds_changed) {
force_bounds_changed_ = force_bounds_changed;
}
// True if the given |display| is currently connected.
bool IsActiveDisplay(const gfx::Display& display) const;
// True if there is an internal display.
bool HasInternalDisplay() const;
bool IsInternalDisplayId(int64 id) const;
bool UpdateWorkAreaOfDisplayNearestWindow(const aura::Window* window,
const gfx::Insets& insets);
// Returns display for given |id|;
const gfx::Display& GetDisplayForId(int64 id) const;
// Finds the display that contains |point| in screeen coordinates.
// Returns invalid display if there is no display that can satisfy
// the condition.
const gfx::Display& FindDisplayContainingPoint(
const gfx::Point& point_in_screen) const;
// Registers the overscan insets for the display of the specified ID. Note
// that the insets size should be specified in DIP size. It also triggers the
// display's bounds change.
void SetOverscanInsets(int64 display_id, const gfx::Insets& insets_in_dip);
// Clears the overscan insets
void ClearCustomOverscanInsets(int64 display_id);
// Returns the current overscan insets for the specified |display_id|.
// Returns an empty insets (0, 0, 0, 0) if no insets are specified for
// the display.
gfx::Insets GetOverscanInsets(int64 display_id) const;
// Called when display configuration has changed. The new display
// configurations is passed as a vector of Display object, which
// contains each display's new infomration.
void OnNativeDisplaysChanged(
const std::vector<DisplayInfo>& display_info_list);
// Updates the internal display data and notifies observers about the changes.
void UpdateDisplays(const std::vector<DisplayInfo>& display_info_list);
// Create a root window for given |display|.
aura::RootWindow* CreateRootWindowForDisplay(const gfx::Display& display);
// Obsoleted: Do not use in new code.
// Returns the display at |index|. The display at 0 is
// no longer considered "primary".
gfx::Display* GetDisplayAt(size_t index);
const gfx::Display* GetPrimaryDisplayCandidate() const;
size_t GetNumDisplays() const;
// Returns the display object nearest given |window|.
const gfx::Display& GetDisplayNearestPoint(
const gfx::Point& point) const;
// Returns the display object nearest given |point|.
const gfx::Display& GetDisplayNearestWindow(
const aura::Window* window) const;
// Returns the display that most closely intersects |match_rect|.
const gfx::Display& GetDisplayMatching(
const gfx::Rect& match_rect)const;
// Retuns the display info associated with |display|.
const DisplayInfo& GetDisplayInfo(const gfx::Display& display) const;
// Returns the human-readable name for the display specified by |display|.
std::string GetDisplayNameFor(const gfx::Display& display);
// RootWindowObserver overrides:
virtual void OnRootWindowResized(const aura::RootWindow* root,
const gfx::Size& new_size) OVERRIDE;
private:
FRIEND_TEST_ALL_PREFIXES(ExtendedDesktopTest, ConvertPoint);
FRIEND_TEST_ALL_PREFIXES(DisplayManagerTest, TestNativeDisplaysChanged);
FRIEND_TEST_ALL_PREFIXES(DisplayManagerTest,
NativeDisplaysChangedAfterPrimaryChange);
FRIEND_TEST_ALL_PREFIXES(DisplayManagerTest, AutomaticOverscanInsets);
friend class ash::AcceleratorControllerTest;
friend class test::DisplayManagerTestApi;
friend class DisplayManagerTest;
friend class test::SystemGestureEventFilterTest;
typedef std::vector<gfx::Display> DisplayList;
void Init();
void CycleDisplayImpl();
void ScaleDisplayImpl();
gfx::Display& FindDisplayForRootWindow(const aura::RootWindow* root);
gfx::Display& FindDisplayForId(int64 id);
// Refer to |CreateDisplayFromSpec| API for the format of |spec|.
void AddDisplayFromSpec(const std::string& spec);
// Checks if the mouse pointer is on one of displays, and moves to
// the center of the nearest display if it's outside of all displays.
void EnsurePointerInDisplays();
// Inserts and update the DisplayInfo according to the overscan
// state. Note that The DisplayInfo stored in the |internal_display_info_|
// can be different from |new_info| (due to overscan state), so
// you must use |GetDisplayInfo| to get the correct DisplayInfo for
// a display.
void InsertAndUpdateDisplayInfo(const DisplayInfo& new_info,
bool can_overscan);
// Creates a display object from the DisplayInfo for |display_id|.
gfx::Display CreateDisplayFromDisplayInfoById(int64 display_id);
DisplayList displays_;
// An internal display info cache used when the internal display is
// disconnectd.
scoped_ptr<DisplayInfo> internal_display_info_;
bool force_bounds_changed_;
// The mapping from the display ID to its internal data.
std::map<int64, DisplayInfo> display_info_;
DISALLOW_COPY_AND_ASSIGN(DisplayManager);
};
extern const aura::WindowProperty<int64>* const kDisplayIdKey;
} // namespace internal
} // namespace ash
#endif // ASH_DISPLAY_DISPLAY_MANAGER_H_
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