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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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55 // xserver that |w| has been mapped; StructureNotifyMask events on |w| are | 55 // xserver that |w| has been mapped; StructureNotifyMask events on |w| are |
56 // pulled out from the queue and dispatched out of order. | 56 // pulled out from the queue and dispatched out of order. |
57 // | 57 // |
58 // For those that know X11, this is really a wrapper around XWindowEvent | 58 // For those that know X11, this is really a wrapper around XWindowEvent |
59 // which still makes sure the preempted event is dispatched instead of | 59 // which still makes sure the preempted event is dispatched instead of |
60 // dropped on the floor. This method exists because mapping a window is | 60 // dropped on the floor. This method exists because mapping a window is |
61 // asynchronous (and we receive an XEvent when mapped), while there are also | 61 // asynchronous (and we receive an XEvent when mapped), while there are also |
62 // functions which require a mapped window. | 62 // functions which require a mapped window. |
63 void BlockUntilWindowMapped(XID window); | 63 void BlockUntilWindowMapped(XID window); |
64 | 64 |
| 65 void BlockUntilWindowUnmapped(XID window); |
| 66 |
65 XDisplay* display() { return display_; } | 67 XDisplay* display() { return display_; } |
66 Time last_seen_server_time() const { return last_seen_server_time_; } | 68 Time last_seen_server_time() const { return last_seen_server_time_; } |
67 | 69 |
68 // Explicitly asks the X11 server for the current timestamp, and updates | 70 // Explicitly asks the X11 server for the current timestamp, and updates |
69 // |last_seen_server_time| with this value. | 71 // |last_seen_server_time| with this value. |
70 Time UpdateLastSeenServerTime(); | 72 Time UpdateLastSeenServerTime(); |
71 | 73 |
72 void StopCurrentEventStream(); | 74 void StopCurrentEventStream(); |
73 void OnDispatcherListChanged(); | 75 void OnDispatcherListChanged(); |
74 | 76 |
75 protected: | 77 protected: |
76 // Extracts cookie data from |xevent| if it's of GenericType, and dispatches | 78 // Extracts cookie data from |xevent| if it's of GenericType, and dispatches |
77 // the event. This function also frees up the cookie data after dispatch is | 79 // the event. This function also frees up the cookie data after dispatch is |
78 // complete. | 80 // complete. |
79 void ExtractCookieDataDispatchEvent(XEvent* xevent); | 81 void ExtractCookieDataDispatchEvent(XEvent* xevent); |
80 | 82 |
81 // Handles updates after event has been dispatched. | 83 // Handles updates after event has been dispatched. |
82 void PostDispatchEvent(XEvent* xevent); | 84 void PostDispatchEvent(XEvent* xevent); |
83 | 85 |
| 86 // Block until receiving a structure notify event of |type| on |window|. |
| 87 // Dispatch all encountered events prior to the one we're blocking on. |
| 88 void BlockOnWindowStructureEvent(XID window, int type); |
| 89 |
84 private: | 90 private: |
85 static X11EventSource* instance_; | 91 static X11EventSource* instance_; |
86 | 92 |
87 X11EventSourceDelegate* delegate_; | 93 X11EventSourceDelegate* delegate_; |
88 | 94 |
89 // The connection to the X11 server used to receive the events. | 95 // The connection to the X11 server used to receive the events. |
90 XDisplay* display_; | 96 XDisplay* display_; |
91 | 97 |
92 // The last timestamp seen in an XEvent. | 98 // The last timestamp seen in an XEvent. |
93 Time last_seen_server_time_; | 99 Time last_seen_server_time_; |
94 | 100 |
95 // State necessary for UpdateLastSeenServerTime | 101 // State necessary for UpdateLastSeenServerTime |
96 bool dummy_initialized_; | 102 bool dummy_initialized_; |
97 XWindow dummy_window_; | 103 XWindow dummy_window_; |
98 XAtom dummy_atom_; | 104 XAtom dummy_atom_; |
99 | 105 |
100 // Keeps track of whether this source should continue to dispatch all the | 106 // Keeps track of whether this source should continue to dispatch all the |
101 // available events. | 107 // available events. |
102 bool continue_stream_ = true; | 108 bool continue_stream_ = true; |
103 | 109 |
104 std::unique_ptr<X11HotplugEventHandler> hotplug_event_handler_; | 110 std::unique_ptr<X11HotplugEventHandler> hotplug_event_handler_; |
105 | 111 |
106 DISALLOW_COPY_AND_ASSIGN(X11EventSource); | 112 DISALLOW_COPY_AND_ASSIGN(X11EventSource); |
107 }; | 113 }; |
108 | 114 |
109 } // namespace ui | 115 } // namespace ui |
110 | 116 |
111 #endif // UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_ | 117 #endif // UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_ |
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