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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_ | 5 #ifndef UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_ |
6 #define UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_ | 6 #define UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
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66 // asynchronous (and we receive an XEvent when mapped), while there are also | 66 // asynchronous (and we receive an XEvent when mapped), while there are also |
67 // functions which require a mapped window. | 67 // functions which require a mapped window. |
68 void BlockUntilWindowMapped(XID window); | 68 void BlockUntilWindowMapped(XID window); |
69 | 69 |
70 void BlockUntilWindowUnmapped(XID window); | 70 void BlockUntilWindowUnmapped(XID window); |
71 | 71 |
72 XDisplay* display() { return display_; } | 72 XDisplay* display() { return display_; } |
73 Time last_seen_server_time() const { return last_seen_server_time_; } | 73 Time last_seen_server_time() const { return last_seen_server_time_; } |
74 | 74 |
75 // Explicitly asks the X11 server for the current timestamp, and updates | 75 // Explicitly asks the X11 server for the current timestamp, and updates |
76 // |last_seen_server_time| with this value. | 76 // |last_seen_server_time_| with this value. |
77 Time UpdateLastSeenServerTime(); | 77 Time UpdateLastSeenServerTime(); |
78 | 78 |
| 79 // Sets |last_seen_server_time_| to |time| if this would cause the time to |
| 80 // move forward. |
| 81 void SetLastSeenServerTime(Time time); |
| 82 |
| 83 // Returns the timestamp of the event currently being dispatched. Falls back |
| 84 // on UpdateLastSeenServerTime() if there's no event being dispatched, or if |
| 85 // the current event does not have a timestamp. |
| 86 Time GetTimestamp(); |
| 87 |
79 void StopCurrentEventStream(); | 88 void StopCurrentEventStream(); |
80 void OnDispatcherListChanged(); | 89 void OnDispatcherListChanged(); |
81 | 90 |
82 protected: | 91 protected: |
83 // Extracts cookie data from |xevent| if it's of GenericType, and dispatches | 92 // Extracts cookie data from |xevent| if it's of GenericType, and dispatches |
84 // the event. This function also frees up the cookie data after dispatch is | 93 // the event. This function also frees up the cookie data after dispatch is |
85 // complete. | 94 // complete. |
86 void ExtractCookieDataDispatchEvent(XEvent* xevent); | 95 void ExtractCookieDataDispatchEvent(XEvent* xevent); |
87 | 96 |
88 // Handles updates after event has been dispatched. | 97 // Handles updates after event has been dispatched. |
89 void PostDispatchEvent(XEvent* xevent); | 98 void PostDispatchEvent(XEvent* xevent); |
90 | 99 |
91 // Block until receiving a structure notify event of |type| on |window|. | 100 // Block until receiving a structure notify event of |type| on |window|. |
92 // Dispatch all encountered events prior to the one we're blocking on. | 101 // Dispatch all encountered events prior to the one we're blocking on. |
93 void BlockOnWindowStructureEvent(XID window, int type); | 102 void BlockOnWindowStructureEvent(XID window, int type); |
94 | 103 |
95 private: | 104 private: |
96 static X11EventSource* instance_; | 105 static X11EventSource* instance_; |
97 | 106 |
98 X11EventSourceDelegate* delegate_; | 107 X11EventSourceDelegate* delegate_; |
99 | 108 |
100 // The connection to the X11 server used to receive the events. | 109 // The connection to the X11 server used to receive the events. |
101 XDisplay* display_; | 110 XDisplay* display_; |
102 | 111 |
103 // The last timestamp seen in an XEvent. | 112 // The last timestamp seen in an XEvent. |
104 Time last_seen_server_time_; | 113 Time last_seen_server_time_; |
105 | 114 |
| 115 // The timestamp of the event being dispatched. |
| 116 Time event_timestamp_; |
| 117 |
106 // State necessary for UpdateLastSeenServerTime | 118 // State necessary for UpdateLastSeenServerTime |
107 bool dummy_initialized_; | 119 bool dummy_initialized_; |
108 XWindow dummy_window_; | 120 XWindow dummy_window_; |
109 XAtom dummy_atom_; | 121 XAtom dummy_atom_; |
110 | 122 |
111 // Keeps track of whether this source should continue to dispatch all the | 123 // Keeps track of whether this source should continue to dispatch all the |
112 // available events. | 124 // available events. |
113 bool continue_stream_ = true; | 125 bool continue_stream_ = true; |
114 | 126 |
115 std::unique_ptr<X11HotplugEventHandler> hotplug_event_handler_; | 127 std::unique_ptr<X11HotplugEventHandler> hotplug_event_handler_; |
116 | 128 |
117 DISALLOW_COPY_AND_ASSIGN(X11EventSource); | 129 DISALLOW_COPY_AND_ASSIGN(X11EventSource); |
118 }; | 130 }; |
119 | 131 |
120 } // namespace ui | 132 } // namespace ui |
121 | 133 |
122 #endif // UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_ | 134 #endif // UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_ |
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