message_pump_glib_x_dispatch.h revision 3f50c38dc070f4bb515c1b64450dae14f316474e
1// Copyright (c) 2011 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 enum DispatchStatus { 22 EVENT_IGNORED, // The event was not processed. 23 EVENT_PROCESSED, // The event has been processed. 24 EVENT_QUIT // The event was processed and the message-loop should 25 // terminate. 26 }; 27 28 // Dispatches the event. EVENT_IGNORED is returned if the event was ignored 29 // (i.e. not processed). EVENT_PROCESSED is returned if the event was 30 // processed. The nested loop exits immediately if EVENT_QUIT is returned. 31 virtual DispatchStatus Dispatch(XEvent* xevent) = 0; 32}; 33 34} // namespace base 35 36#endif // BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H 37