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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_SCREEN_X11_H_ |
| 6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_SCREEN_X11_H_ |
| 7 |
| 8 #include "base/message_loop/message_pump_dispatcher.h" |
| 9 #include "base/observer_list.h" |
| 10 #include "base/timer/timer.h" |
| 11 #include "ui/gfx/screen.h" |
| 12 #include "ui/views/views_export.h" |
| 13 |
| 14 namespace gfx { |
| 15 class Display; |
| 16 } |
| 17 |
| 18 typedef unsigned long XID; |
| 19 typedef XID Window; |
| 20 typedef struct _XDisplay Display; |
| 21 |
| 22 namespace views { |
| 23 class DesktopScreenX11Test; |
| 24 |
| 25 // Our singleton screen implementation that talks to xrandr. |
| 26 class VIEWS_EXPORT DesktopScreenX11 : public gfx::Screen, |
| 27 public base::MessagePumpDispatcher { |
| 28 public: |
| 29 DesktopScreenX11(); |
| 30 |
| 31 virtual ~DesktopScreenX11(); |
| 32 |
| 33 // Takes a set of displays and dispatches the screen change events to |
| 34 // listeners. Exposed for testing. |
| 35 void ProcessDisplayChange(const std::vector<gfx::Display>& displays); |
| 36 |
| 37 // Overridden from gfx::Screen: |
| 38 virtual bool IsDIPEnabled() OVERRIDE; |
| 39 virtual gfx::Point GetCursorScreenPoint() OVERRIDE; |
| 40 virtual gfx::NativeWindow GetWindowUnderCursor() OVERRIDE; |
| 41 virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) |
| 42 OVERRIDE; |
| 43 virtual int GetNumDisplays() const OVERRIDE; |
| 44 virtual std::vector<gfx::Display> GetAllDisplays() const OVERRIDE; |
| 45 virtual gfx::Display GetDisplayNearestWindow( |
| 46 gfx::NativeView window) const OVERRIDE; |
| 47 virtual gfx::Display GetDisplayNearestPoint( |
| 48 const gfx::Point& point) const OVERRIDE; |
| 49 virtual gfx::Display GetDisplayMatching( |
| 50 const gfx::Rect& match_rect) const OVERRIDE; |
| 51 virtual gfx::Display GetPrimaryDisplay() const OVERRIDE; |
| 52 virtual void AddObserver(gfx::DisplayObserver* observer) OVERRIDE; |
| 53 virtual void RemoveObserver(gfx::DisplayObserver* observer) OVERRIDE; |
| 54 |
| 55 // Overridden from MessagePumpDispatcher: |
| 56 virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE; |
| 57 |
| 58 private: |
| 59 friend class DesktopScreenX11Test; |
| 60 |
| 61 // Constructor used in tests. |
| 62 DesktopScreenX11(const std::vector<gfx::Display>& test_displays); |
| 63 |
| 64 // Builds a list of displays from the current screen information offered by |
| 65 // the X server. |
| 66 std::vector<gfx::Display> BuildDisplaysFromXRandRInfo(); |
| 67 |
| 68 // We delay updating the display so we can coalesce events. |
| 69 void ConfigureTimerFired(); |
| 70 |
| 71 Display* xdisplay_; |
| 72 ::Window x_root_window_; |
| 73 |
| 74 // Whether the x server supports the XRandR extension. |
| 75 bool has_xrandr_; |
| 76 |
| 77 // The base of the event numbers used to represent XRandr events used in |
| 78 // decoding events regarding output add/remove. |
| 79 int xrandr_event_base_; |
| 80 |
| 81 // The display objects we present to chrome. |
| 82 std::vector<gfx::Display> displays_; |
| 83 |
| 84 // The timer to delay configuring outputs. See also the comments in |
| 85 // Dispatch(). |
| 86 scoped_ptr<base::OneShotTimer<DesktopScreenX11> > configure_timer_; |
| 87 |
| 88 ObserverList<gfx::DisplayObserver> observer_list_; |
| 89 |
| 90 DISALLOW_COPY_AND_ASSIGN(DesktopScreenX11); |
| 91 }; |
| 92 |
| 93 } // namespace views |
| 94 |
| 95 #endif // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_SCREEN_X11_H_ |
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