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
3 // found in the LICENSE file.
5 #ifndef UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_
6 #define UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_
8 #include "base/memory/scoped_ptr.h"
9 #include "ui/events/events_export.h"
10 #include "ui/events/platform/platform_event_source.h"
11 #include "ui/gfx/x/x11_types.h"
13 typedef struct _GPollFD GPollFD;
14 typedef struct _GSource GSource;
15 typedef union _XEvent XEvent;
16 typedef unsigned long XID;
20 // A PlatformEventSource implementation for reading events from X11 server and
21 // dispatching the events to the appropriate dispatcher.
22 class EVENTS_EXPORT X11EventSource : public PlatformEventSource {
24 explicit X11EventSource(XDisplay* display);
25 virtual ~X11EventSource();
27 static X11EventSource* GetInstance();
29 // Called by the glib source dispatch function. Processes all (if any)
30 // available X events.
31 void DispatchXEvents();
33 // Blocks on the X11 event queue until we receive notification from the
34 // xserver that |w| has been mapped; StructureNotifyMask events on |w| are
35 // pulled out from the queue and dispatched out of order.
37 // For those that know X11, this is really a wrapper around XWindowEvent
38 // which still makes sure the preempted event is dispatched instead of
39 // dropped on the floor. This method exists because mapping a window is
40 // asynchronous (and we receive an XEvent when mapped), while there are also
41 // functions which require a mapped window.
42 void BlockUntilWindowMapped(XID window);
45 XDisplay* display() { return display_; }
48 // PlatformEventSource:
49 virtual uint32_t DispatchEvent(XEvent* xevent) OVERRIDE;
51 // The connection to the X11 server used to receive the events.
54 DISALLOW_COPY_AND_ASSIGN(X11EventSource);
59 #endif // UI_EVENTS_PLATFORM_X11_X11_EVENT_SOURCE_H_