Relocate display_manager from ash to ui

ash/display/display_manager.h

Index: ash/display/display_manager.h
diff --git a/ash/display/display_manager.h b/ash/display/display_manager.h
deleted file mode 100644
index 60c84089d7de2ef88d25b10656d52f090475b5c1..0000000000000000000000000000000000000000
--- a/ash/display/display_manager.h
+++ /dev/null
@@ -1,486 +0,0 @@
-// 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 <stddef.h>
-#include <stdint.h>
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "ash/ash_export.h"
-#include "base/compiler_specific.h"
-#include "base/gtest_prod_util.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "ui/display/display.h"
-#include "ui/display/display_observer.h"
-#include "ui/display/manager/display_layout.h"
-#include "ui/display/manager/managed_display_info.h"
-
-#if defined(OS_CHROMEOS)
-#include "ui/display/chromeos/display_configurator.h"
-#endif
-
-namespace display {
-class DisplayLayoutStore;
-class DisplayObserver;
-class Screen;
-}
-
-namespace gfx {
-class Insets;
-class Rect;
-}
-
-namespace ash {
-using DisplayInfoList = std::vector<display::ManagedDisplayInfo>;
-
-namespace test {
-class DisplayManagerTestApi;
-}
-
-// DisplayManager maintains the current display configurations,
-// and notifies observers when configuration changes.
-//
-// TODO(oshima): Make this non internal.
-class ASH_EXPORT DisplayManager
-#if defined(OS_CHROMEOS)
-    : public ui::DisplayConfigurator::SoftwareMirroringController
-#endif
-{
- public:
-  class ASH_EXPORT Delegate {
-   public:
-    virtual ~Delegate() {}
-
-    // Create or updates the mirroring window with |display_info_list|.
-    virtual void CreateOrUpdateMirroringDisplay(
-        const DisplayInfoList& display_info_list) = 0;
-
-    // Closes the mirror window if not necessary.
-    virtual void CloseMirroringDisplayIfNotNecessary() = 0;
-
-    // Called before and after the display configuration changes.
-    // When |clear_focus| is true, the implementation should
-    // deactivate the active window and set the focus window to NULL.
-    virtual void PreDisplayConfigurationChange(bool clear_focus) = 0;
-    virtual void PostDisplayConfigurationChange() = 0;
-
-#if defined(OS_CHROMEOS)
-    // Get the ui::DisplayConfigurator.
-    virtual ui::DisplayConfigurator* display_configurator() = 0;
-#endif
-
-    virtual std::string GetInternalDisplayNameString() = 0;
-    virtual std::string GetUnknownDisplayNameString() = 0;
-  };
-
-  // How the second display will be used.
-  // 1) EXTENDED mode extends the desktop to the second dislpay.
-  // 2) MIRRORING mode copies the content of the primary display to
-  //    the 2nd display. (Software Mirroring).
-  // 3) UNIFIED mode creates single desktop across multiple displays.
-  enum MultiDisplayMode {
-    EXTENDED = 0,
-    MIRRORING,
-    UNIFIED,
-  };
-
-  // The display ID for a virtual display assigned to a unified desktop.
-  static int64_t kUnifiedDisplayId;
-
-  explicit DisplayManager(std::unique_ptr<display::Screen> screen);
-#if defined(OS_CHROMEOS)
-  ~DisplayManager() override;
-#else
-  virtual ~DisplayManager();
-#endif
-
-  display::DisplayLayoutStore* layout_store() { return layout_store_.get(); }
-
-  void set_delegate(Delegate* delegate) { delegate_ = delegate; }
-
-  // When set to true, the DisplayManager calls OnDisplayMetricsChanged
-  // 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;
-  }
-
-  // Returns the display id of the first display in the outupt list.
-  int64_t first_display_id() const { return first_display_id_; }
-
-  // Initializes displays using command line flag. Returns false
-  // if no command line flag was provided.
-  bool InitFromCommandLine();
-
-  // Initialize default display.
-  void InitDefaultDisplay();
-
-  // Initializes font related params that depends on display
-  // configuration.
-  void RefreshFontParams();
-
-  // Returns the display layout used for current displays.
-  const display::DisplayLayout& GetCurrentDisplayLayout() const;
-
-  // Returns the current display list.
-  display::DisplayIdList GetCurrentDisplayIdList() const;
-
-  // Sets the layout for the current display pair. The |layout| specifies
-  // the locaion of the displays relative to their parents.
-  void SetLayoutForCurrentDisplays(
-      std::unique_ptr<display::DisplayLayout> layout);
-
-  // Returns display for given |id|;
-  const display::Display& GetDisplayForId(int64_t 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 display::Display& FindDisplayContainingPoint(
-      const gfx::Point& point_in_screen) const;
-
-  // Sets the work area's |insets| to the display given by |display_id|.
-  bool UpdateWorkAreaOfDisplay(int64_t display_id, const gfx::Insets& insets);
-
-  // 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_t display_id, const gfx::Insets& insets_in_dip);
-
-  // Sets the display's rotation for the given |source|. The new |rotation| will
-  // also become active.
-  void SetDisplayRotation(int64_t display_id,
-                          display::Display::Rotation rotation,
-                          display::Display::RotationSource source);
-
-  // Sets the UI scale for the |display_id|. Returns false if the
-  // display_id is not an internal display.
-  bool SetDisplayUIScale(int64_t display_id, float scale);
-
-  // Sets the external display's configuration, including resolution change,
-  // ui-scale change, and device scale factor change. Returns true if it changes
-  // the display resolution so that the caller needs to show a notification in
-  // case the new resolution actually doesn't work.
-  bool SetDisplayMode(
-      int64_t display_id,
-      const scoped_refptr<display::ManagedDisplayMode>& display_mode);
-
-  // Register per display properties. |overscan_insets| is NULL if
-  // the display has no custom overscan insets.
-  void RegisterDisplayProperty(int64_t display_id,
-                               display::Display::Rotation rotation,
-                               float ui_scale,
-                               const gfx::Insets* overscan_insets,
-                               const gfx::Size& resolution_in_pixels,
-                               float device_scale_factor,
-                               ui::ColorCalibrationProfile color_profile);
-
-  // Register stored rotation properties for the internal display.
-  void RegisterDisplayRotationProperties(bool rotation_lock,
-                                         display::Display::Rotation rotation);
-
-  // Returns the stored rotation lock preference if it has been loaded,
-  // otherwise false.
-  bool registered_internal_display_rotation_lock() const {
-    return registered_internal_display_rotation_lock_;
-  }
-
-  // Returns the stored rotation preference for the internal display if it has
-  // been loaded, otherwise |display::Display::Rotate_0|.
-  display::Display::Rotation registered_internal_display_rotation() const {
-    return registered_internal_display_rotation_;
-  }
-
-  // Returns the display mode of |display_id| which is currently used.
-  scoped_refptr<display::ManagedDisplayMode> GetActiveModeForDisplayId(
-      int64_t display_id) const;
-
-  // Returns the display's selected mode. This returns false and doesn't
-  // set |mode_out| if the display mode is in default.
-  scoped_refptr<display::ManagedDisplayMode> GetSelectedModeForDisplayId(
-      int64_t display_id) const;
-
-  // Tells if the virtual resolution feature is enabled.
-  bool IsDisplayUIScalingEnabled() const;
-
-  // 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_t display_id) const;
-
-  // Sets the color calibration of the display to |profile|.
-  void SetColorCalibrationProfile(int64_t display_id,
-                                  ui::ColorCalibrationProfile profile);
-
-  // 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<display::ManagedDisplayInfo>& display_info_list);
-
-  // Updates the internal display data and notifies observers about the changes.
-  void UpdateDisplaysWith(
-      const std::vector<display::ManagedDisplayInfo>& display_info_list);
-
-  // Updates current displays using current |display_info_|.
-  void UpdateDisplays();
-
-  // Returns the display at |index|. The display at 0 is
-  // no longer considered "primary".
-  const display::Display& GetDisplayAt(size_t index) const;
-
-  const display::Display& GetPrimaryDisplayCandidate() const;
-
-  // Returns the logical number of displays. This returns 1
-  // when displays are mirrored.
-  size_t GetNumDisplays() const;
-
-  // Returns only the currently active displays. This list does not include the
-  // displays that will be removed if |UpdateDisplaysWith| is currently
-  // executing.
-  // See https://crbug.com/632755
-  const display::Displays& active_only_display_list() const {
-    return is_updating_display_list_ ? active_only_display_list_
-                                     : active_display_list();
-  }
-
-  const display::Displays& active_display_list() const {
-    return active_display_list_;
-  }
-
-  // Returns true if the display specified by |display_id| is currently
-  // connected and active. (mirroring display isn't active, for example).
-  bool IsActiveDisplayId(int64_t display_id) const;
-
-  // Returns the number of connected displays. This returns 2
-  // when displays are mirrored.
-  size_t num_connected_displays() const { return num_connected_displays_; }
-
-  // Returns the mirroring status.
-  bool IsInMirrorMode() const;
-  int64_t mirroring_display_id() const { return mirroring_display_id_; }
-  const display::Displays& software_mirroring_display_list() const {
-    return software_mirroring_display_list_;
-  }
-
-  // Sets/gets if the unified desktop feature is enabled.
-  void SetUnifiedDesktopEnabled(bool enabled);
-  bool unified_desktop_enabled() const { return unified_desktop_enabled_; }
-
-  // Returns true if it's in unified desktop mode.
-  bool IsInUnifiedMode() const;
-
-  // Returns the display used for software mirrroring. Returns invalid
-  // display if not found.
-  const display::Display GetMirroringDisplayById(int64_t id) const;
-
-  // Retuns the display info associated with |display_id|.
-  const display::ManagedDisplayInfo& GetDisplayInfo(int64_t display_id) const;
-
-  // Returns the human-readable name for the display |id|.
-  std::string GetDisplayNameForId(int64_t id);
-
-  // Returns the display id that is capable of UI scaling. On device,
-  // this returns internal display's ID if its device scale factor is 2,
-  // or invalid ID if such internal display doesn't exist. On linux
-  // desktop, this returns the first display ID.
-  int64_t GetDisplayIdForUIScaling() const;
-
-  // Change the mirror mode.
-  void SetMirrorMode(bool mirrored);
-
-  // Used to emulate display change when run in a desktop environment instead
-  // of on a device.
-  void AddRemoveDisplay();
-  void ToggleDisplayScaleFactor();
-
-// SoftwareMirroringController override:
-#if defined(OS_CHROMEOS)
-  void SetSoftwareMirroring(bool enabled) override;
-  bool SoftwareMirroringEnabled() const override;
-#endif
-
-  // Sets/gets default multi display mode.
-  void SetDefaultMultiDisplayModeForCurrentDisplays(MultiDisplayMode mode);
-  MultiDisplayMode current_default_multi_display_mode() const {
-    return current_default_multi_display_mode_;
-  }
-
-  // Sets multi display mode.
-  void SetMultiDisplayMode(MultiDisplayMode mode);
-
-  // Reconfigure display configuration using the same
-  // physical display. TODO(oshima): Refactor and move this
-  // impl to |SetDefaultMultiDisplayMode|.
-  void ReconfigureDisplays();
-
-  // Update the bounds of the display given by |display_id|.
-  bool UpdateDisplayBounds(int64_t display_id, const gfx::Rect& new_bounds);
-
-  // Creates mirror window asynchronously if the software mirror mode
-  // is enabled.
-  void CreateMirrorWindowAsyncIfAny();
-
-  // A unit test may change the internal display id (which never happens on
-  // a real device). This will update the mode list for internal display
-  // for this test scenario.
-  void UpdateInternalManagedDisplayModeListForTest();
-
-  // Zoom the internal display.
-  bool ZoomInternalDisplay(bool up);
-
-  // Reset the internal display zoom.
-  void ResetInternalDisplayZoom();
-
-  // Notifies observers of display configuration changes.
-  void NotifyMetricsChanged(const display::Display& display, uint32_t metrics);
-  void NotifyDisplayAdded(const display::Display& display);
-  void NotifyDisplayRemoved(const display::Display& display);
-
-  // Delegated from the Screen implementation.
-  void AddObserver(display::DisplayObserver* observer);
-  void RemoveObserver(display::DisplayObserver* observer);
-
-  // Returns a display::Display object for a secondary display if it exists
-  // or returns invalid display if there is no secondary display.
-  // TODO(rjkroege): Display swapping is an obsolete feature pre-dating
-  // multi-display support so remove it.
-  const display::Display& GetSecondaryDisplay() const;
-
- private:
-  friend class test::DisplayManagerTestApi;
-
-  bool software_mirroring_enabled() const {
-    return multi_display_mode_ == MIRRORING;
-  };
-
-  void set_change_display_upon_host_resize(bool value) {
-    change_display_upon_host_resize_ = value;
-  }
-
-  // Creates software mirroring display related information. The display
-  // used to mirror the content is removed from the |display_info_list|.
-  void CreateSoftwareMirroringDisplayInfo(DisplayInfoList* display_info_list);
-
-  display::Display* FindDisplayForId(int64_t id);
-
-  // Add the mirror display's display info if the software based
-  // mirroring is in use.
-  void AddMirrorDisplayInfoIfAny(DisplayInfoList* display_info_list);
-
-  // Inserts and update the display::ManagedDisplayInfo according to the
-  // overscan
-  // state. Note that The display::ManagedDisplayInfo 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
-  // display::ManagedDisplayInfo for
-  // a display.
-  void InsertAndUpdateDisplayInfo(const display::ManagedDisplayInfo& new_info);
-
-  // Called when the display info is updated through InsertAndUpdateDisplayInfo.
-  void OnDisplayInfoUpdated(const display::ManagedDisplayInfo& display_info);
-
-  // Creates a display object from the display::ManagedDisplayInfo for
-  // |display_id|.
-  display::Display CreateDisplayFromDisplayInfoById(int64_t display_id);
-
-  // Creates a display object from the display::ManagedDisplayInfo for
-  // |display_id|
-  // for
-  // mirroring. The size of the display will be scaled using |scale|
-  // with the offset using |origin|.
-  display::Display CreateMirroringDisplayFromDisplayInfoById(
-      int64_t display_id,
-      const gfx::Point& origin,
-      float scale);
-
-  // Updates the bounds of all non-primary displays in |display_list| and
-  // append the indices of displays updated to |updated_indices|.
-  // When the size of |display_list| equals 2, the bounds are updated using
-  // the layout registered for the display pair. For more than 2 displays,
-  // the bounds are updated using horizontal layout.
-  void UpdateNonPrimaryDisplayBoundsForLayout(
-      display::Displays* display_list,
-      std::vector<size_t>* updated_indices);
-
-  void CreateMirrorWindowIfAny();
-
-  void RunPendingTasksForTest();
-
-  // Applies the |layout| and updates the bounds of displays in |display_list|.
-  // |updated_ids| contains the ids for displays whose bounds have changed.
-  void ApplyDisplayLayout(const display::DisplayLayout& layout,
-                          display::Displays* display_list,
-                          std::vector<int64_t>* updated_ids);
-
-  Delegate* delegate_;  // not owned.
-
-  std::unique_ptr<display::Screen> screen_;
-
-  std::unique_ptr<display::DisplayLayoutStore> layout_store_;
-
-  int64_t first_display_id_;
-
-  // List of current active displays.
-  display::Displays active_display_list_;
-  // This list does not include the displays that will be removed if
-  // |UpdateDisplaysWith| is under execution.
-  // See https://crbug.com/632755
-  display::Displays active_only_display_list_;
-
-  // True if active_display_list is being modified and has displays that are not
-  // presently active.
-  // See https://crbug.com/632755
-  bool is_updating_display_list_;
-
-  int num_connected_displays_;
-
-  bool force_bounds_changed_;
-
-  // The mapping from the display ID to its internal data.
-  std::map<int64_t, display::ManagedDisplayInfo> display_info_;
-
-  // Selected display modes for displays. Key is the displays' ID.
-  std::map<int64_t, scoped_refptr<display::ManagedDisplayMode>> display_modes_;
-
-  // When set to true, the host window's resize event updates
-  // the display's size. This is set to true when running on
-  // desktop environment (for debugging) so that resizing the host
-  // window will update the display properly. This is set to false
-  // on device as well as during the unit tests.
-  bool change_display_upon_host_resize_;
-
-  MultiDisplayMode multi_display_mode_;
-  MultiDisplayMode current_default_multi_display_mode_;
-
-  int64_t mirroring_display_id_;
-  display::Displays software_mirroring_display_list_;
-
-  // User preference for rotation lock of the internal display.
-  bool registered_internal_display_rotation_lock_;
-
-  // User preference for the rotation of the internal display.
-  display::Display::Rotation registered_internal_display_rotation_;
-
-  bool unified_desktop_enabled_;
-
-  base::ObserverList<display::DisplayObserver> observers_;
-
-  base::WeakPtrFactory<DisplayManager> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DisplayManager);
-};
-
-}  // namespace ash
-
-#endif  // ASH_DISPLAY_DISPLAY_MANAGER_H_