message_pump_glib_x_dispatch.h revision 21d179b334e59e9a3bfcaed4c4430bef1bc5759d 
1// Copyright (c) 2010 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 BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H
6#define BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H
7
8#include "base/message_pump.h"
9#include "base/message_pump_glib.h"
10
11typedef union _XEvent XEvent;
12
13namespace base {
14
15// The message pump used for TOUCH_UI on linux is MessagePumpGlibX, which can
16// dispatch both GdkEvents* and XEvents* captured directly from X.
17// MessagePumpForUI::Dispatcher provides the mechanism for dispatching
18// GdkEvents. This class provides additional mechanism for dispatching XEvents.
19class MessagePumpGlibXDispatcher : public MessagePumpForUI::Dispatcher {
20 public:
21
22  typedef enum {
23    EVENT_IGNORED,    // The event was not processed.
24    EVENT_PROCESSED,  // The event has been processed.
25    EVENT_QUIT        // The event was processed and the message-loop should
26                      // terminate.
27  } DispatchStatus;
28
29  // Dispatches the event. EVENT_IGNORED is returned if the event was ignored
30  // (i.e. not processed). EVENT_PROCESSED is returned if the event was
31  // processed. The nested loop exits immediately if EVENT_QUIT is returned.
32  virtual DispatchStatus Dispatch(XEvent* xevent) = 0;
33};
34
35}  // namespace base
36
37#endif  // BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H
38