message_pump_glib_x.h revision 4a5e2dc747d50c653511c68ccb2cfbfb740bd5a7
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_H 6#define BASE_MESSAGE_PUMP_GLIB_X_H 7 8#include "base/message_pump.h" 9#include "base/message_pump_glib.h" 10 11#include <bitset> 12#include <set> 13 14#include <glib.h> 15#include <gtk/gtk.h> 16#include <X11/X.h> 17 18namespace base { 19 20class MessagePumpGlibX : public MessagePumpForUI { 21 public: 22 MessagePumpGlibX(); 23 virtual ~MessagePumpGlibX(); 24 25 // MessagePumpForUI implementation. 26 virtual bool RunOnce(GMainContext* context, bool block); 27 28 // Indicates whether a GDK event was injected by chrome (when |true|) or if it 29 // was captured and being processed by GDK (when |false|). 30 bool IsDispatchingEvent(void) { return dispatching_event_; } 31 32#if defined(HAVE_XINPUT2) 33 // Setup an X Window for XInput2 events. 34 void SetupXInput2ForXWindow(Window xid); 35#endif 36 37 private: 38 static void EventDispatcherX(GdkEvent* event, gpointer data); 39 40 // Update the lookup table and flag the events that should be captured and 41 // processed so that GDK doesn't get to them. 42 void InitializeEventsToCapture(void); 43 44#if defined(HAVE_XINPUT2) 45 // Initialize X2 input. 46 void InitializeXInput2(void); 47 48 // The opcode used for checking events. 49 int xiopcode_; 50 51 // The list of master pointer devices. We maintain this list so that it is not 52 // necessary to query X for the list of devices for each GdkWindow created. 53 std::set<int> masters_; 54 55 // The list of slave (physical) pointer devices. 56 // TODO(sad): This is currently unused, and may be removed eventually. 57 std::set<int> slaves_; 58#endif 59 60 // The event source for GDK events. 61 GSource* gdksource_; 62 63 // Indicates whether a GDK event was injected by chrome (when |true|) or if it 64 // was captured and being processed by GDK (when |false|). 65 bool dispatching_event_; 66 67#if ! GTK_CHECK_VERSION(2,18,0) 68// GDK_EVENT_LAST was introduced in GTK+ 2.18.0. For earlier versions, we pick a 69// large enough value (the value of GDK_EVENT_LAST in 2.18.0) so that it works 70// for all versions. 71#define GDK_EVENT_LAST 37 72#endif 73 74 // We do not want to process all the events ourselves. So we use a lookup 75 // table to quickly check if a particular event should be handled by us or if 76 // it should be passed on to the default GDK handler. 77 std::bitset<LASTEvent> capture_x_events_; 78 std::bitset<GDK_EVENT_LAST> capture_gdk_events_; 79 80 DISALLOW_COPY_AND_ASSIGN(MessagePumpGlibX); 81}; 82 83} // namespace base 84 85#endif // BASE_MESSAGE_PUMP_GLIB_X_H 86