Pileus Git - ~andy/gtk/blob - gdk/x11/gdkdevicemanager-x11.c

   1 /* GDK - The GIMP Drawing Kit
   2  * Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include "gdkx11devicemanager-core.h"
  23 #include "gdkdevicemanagerprivate-core.h"
  24 #ifdef XINPUT_XFREE
  25 #include "gdkx11devicemanager-xi.h"
  26 #ifdef XINPUT_2
  27 #include "gdkx11devicemanager-xi2.h"
  28 #endif
  29 #endif
  30 #include "gdkinternals.h"
  31 #include "gdkprivate-x11.h"
  32
  33 /* Defines for VCP/VCK, to be used too
  34  * for the core protocol device manager
  35  */
  36 #define VIRTUAL_CORE_POINTER_ID 2
  37 #define VIRTUAL_CORE_KEYBOARD_ID 3
  38
  39 GdkDeviceManager *
  40 _gdk_x11_device_manager_new (GdkDisplay *display)
  41 {
  42   if (!g_getenv ("GDK_CORE_DEVICE_EVENTS"))
  43     {
  44 #if defined (XINPUT_2) || defined (XINPUT_XFREE)
  45       int opcode, firstevent, firsterror;
  46       Display *xdisplay;
  47
  48       xdisplay = GDK_DISPLAY_XDISPLAY (display);
  49
  50       if (XQueryExtension (xdisplay, "XInputExtension",
  51                            &opcode, &firstevent, &firsterror))
  52         {
  53 #ifdef XINPUT_2
  54           int major, minor;
  55
  56           major = 2;
  57           minor = 0;
  58
  59           if (!_gdk_disable_multidevice &&
  60               XIQueryVersion (xdisplay, &major, &minor) != BadRequest)
  61             {
  62               GdkX11DeviceManagerXI2 *device_manager_xi2;
  63
  64               GDK_NOTE (INPUT, g_print ("Creating XI2 device manager\n"));
  65
  66               device_manager_xi2 = g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_XI2,
  67                                                  "display", display,
  68                                                  "opcode", opcode,
  69                                                  NULL);
  70
  71               return GDK_DEVICE_MANAGER (device_manager_xi2);
  72             }
  73           else
  74 #endif /* XINPUT_2 */
  75             {
  76               GDK_NOTE (INPUT, g_print ("Creating XI device manager\n"));
  77
  78               return g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_XI,
  79                                    "display", display,
  80                                    "event-base", firstevent,
  81                                    NULL);
  82             }
  83         }
  84 #endif /* XINPUT_2 || XINPUT_XFREE */
  85     }
  86
  87   GDK_NOTE (INPUT, g_print ("Creating core device manager\n"));
  88
  89   return g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_CORE,
  90                        "display", display,
  91                        NULL);
  92 }
  93
  94 /**
  95  * gdk_x11_device_manager_lookup:
  96  * @device_manager: a #GdkDeviceManager
  97  * @device_id: a device ID, as understood by the XInput2 protocol
  98  *
  99  * Returns the #GdkDevice that wraps the given device ID.
 100  *
 101  * Returns: (transfer none): (allow-none): The #GdkDevice wrapping the device ID,
 102  *          or %NULL if the given ID doesn't currently represent a device.
 103  *
 104  * Since: 3.2
 105  **/
 106 GdkDevice *
 107 gdk_x11_device_manager_lookup (GdkDeviceManager *device_manager,
 108                                gint              device_id)
 109 {
 110   GdkDevice *device = NULL;
 111
 112   g_return_val_if_fail (GDK_IS_DEVICE_MANAGER (device_manager), NULL);
 113
 114 #ifdef XINPUT_2
 115   if (GDK_IS_X11_DEVICE_MANAGER_XI2 (device_manager))
 116     device = _gdk_x11_device_manager_xi2_lookup (GDK_X11_DEVICE_MANAGER_XI2 (device_manager),
 117                                                  device_id);
 118   else
 119 #endif /* XINPUT_2 */
 120     if (GDK_IS_X11_DEVICE_MANAGER_CORE (device_manager))
 121       {
 122         /* It is a core/xi1 device manager, we only map
 123          * IDs 2 and 3, matching XI2's Virtual Core Pointer
 124          * and Keyboard.
 125          */
 126         if (device_id == VIRTUAL_CORE_POINTER_ID)
 127           device = GDK_X11_DEVICE_MANAGER_CORE (device_manager)->core_pointer;
 128         else if (device_id == VIRTUAL_CORE_KEYBOARD_ID)
 129           device = GDK_X11_DEVICE_MANAGER_CORE (device_manager)->core_keyboard;
 130       }
 131
 132   return device;
 133 }
 134
 135 /**
 136  * gdk_x11_device_get_id:
 137  * @device: a #GdkDevice
 138  *
 139  * Returns the device ID as seen by XInput2.
 140  *
 141  * <note>
 142  *   If gdk_disable_multidevice() has been called, this function
 143  *   will respectively return 2/3 for the core pointer and keyboard,
 144  *   (matching the IDs for the Virtual Core Pointer and Keyboard in
 145  *   XInput 2), but calling this function on any slave devices (i.e.
 146  *   those managed via XInput 1.x), will return 0.
 147  * </note>
 148  *
 149  * Returns: the XInput2 device ID.
 150  *
 151  * Since: 3.2
 152  **/
 153 gint
 154 gdk_x11_device_get_id (GdkDevice *device)
 155 {
 156   gint device_id = 0;
 157
 158   g_return_val_if_fail (GDK_IS_DEVICE (device), 0);
 159
 160 #ifdef XINPUT_2
 161   if (GDK_IS_X11_DEVICE_XI2 (device))
 162     device_id = _gdk_x11_device_xi2_get_id (GDK_X11_DEVICE_XI2 (device));
 163   else
 164 #endif /* XINPUT_2 */
 165     if (GDK_IS_X11_DEVICE_CORE (device))
 166       {
 167         if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 168           device_id = VIRTUAL_CORE_KEYBOARD_ID;
 169         else
 170           device_id = VIRTUAL_CORE_POINTER_ID;
 171       }
 172
 173   return device_id;
 174 }