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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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