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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "config.h"
  19
  20 #include "gdkx11devicemanager-core.h"
  21 #include "gdkdevicemanagerprivate-core.h"
  22 #ifdef XINPUT_XFREE
  23 #include "gdkx11devicemanager-xi.h"
  24 #ifdef XINPUT_2
  25 #include "gdkx11devicemanager-xi2.h"
  26 #endif
  27 #endif
  28 #include "gdkinternals.h"
  29 #include "gdkprivate-x11.h"
  30
  31 /* Defines for VCP/VCK, to be used too
  32  * for the core protocol device manager
  33  */
  34 #define VIRTUAL_CORE_POINTER_ID 2
  35 #define VIRTUAL_CORE_KEYBOARD_ID 3
  36
  37 GdkDeviceManager *
  38 _gdk_x11_device_manager_new (GdkDisplay *display)
  39 {
  40   if (!g_getenv ("GDK_CORE_DEVICE_EVENTS"))
  41     {
  42 #if defined (XINPUT_2) || defined (XINPUT_XFREE)
  43       int opcode, firstevent, firsterror;
  44       Display *xdisplay;
  45
  46       xdisplay = GDK_DISPLAY_XDISPLAY (display);
  47
  48       if (XQueryExtension (xdisplay, "XInputExtension",
  49                            &opcode, &firstevent, &firsterror))
  50         {
  51 #ifdef XINPUT_2
  52           int major, minor;
  53
  54           major = 2;
  55 #ifdef XINPUT_2_2
  56           minor = 2;
  57 #else
  58           minor = 0;
  59 #endif /* XINPUT_2_2 */
  60
  61           if (!_gdk_disable_multidevice &&
  62               XIQueryVersion (xdisplay, &major, &minor) != BadRequest)
  63             {
  64               GdkX11DeviceManagerXI2 *device_manager_xi2;
  65
  66               GDK_NOTE (INPUT, g_print ("Creating XI2 device manager\n"));
  67
  68               device_manager_xi2 = g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_XI2,
  69                                                  "display", display,
  70                                                  "opcode", opcode,
  71                                                  "major", major,
  72                                                  "minor", minor,
  73                                                  NULL);
  74
  75               return GDK_DEVICE_MANAGER (device_manager_xi2);
  76             }
  77           else
  78 #endif /* XINPUT_2 */
  79             {
  80               GDK_NOTE (INPUT, g_print ("Creating XI device manager\n"));
  81
  82               return g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_XI,
  83                                    "display", display,
  84                                    "event-base", firstevent,
  85                                    NULL);
  86             }
  87         }
  88 #endif /* XINPUT_2 || XINPUT_XFREE */
  89     }
  90
  91   GDK_NOTE (INPUT, g_print ("Creating core device manager\n"));
  92
  93   return g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_CORE,
  94                        "display", display,
  95                        NULL);
  96 }
  97
  98 /**
  99  * gdk_x11_device_manager_lookup:
 100  * @device_manager: a #GdkDeviceManager
 101  * @device_id: a device ID, as understood by the XInput2 protocol
 102  *
 103  * Returns the #GdkDevice that wraps the given device ID.
 104  *
 105  * Returns: (transfer none): (allow-none): The #GdkDevice wrapping the device ID,
 106  *          or %NULL if the given ID doesn't currently represent a device.
 107  *
 108  * Since: 3.2
 109  **/
 110 GdkDevice *
 111 gdk_x11_device_manager_lookup (GdkDeviceManager *device_manager,
 112                                gint              device_id)
 113 {
 114   GdkDevice *device = NULL;
 115
 116   g_return_val_if_fail (GDK_IS_DEVICE_MANAGER (device_manager), NULL);
 117
 118 #ifdef XINPUT_2
 119   if (GDK_IS_X11_DEVICE_MANAGER_XI2 (device_manager))
 120     device = _gdk_x11_device_manager_xi2_lookup (GDK_X11_DEVICE_MANAGER_XI2 (device_manager),
 121                                                  device_id);
 122   else
 123 #endif /* XINPUT_2 */
 124     if (GDK_IS_X11_DEVICE_MANAGER_CORE (device_manager))
 125       {
 126         /* It is a core/xi1 device manager, we only map
 127          * IDs 2 and 3, matching XI2's Virtual Core Pointer
 128          * and Keyboard.
 129          */
 130         if (device_id == VIRTUAL_CORE_POINTER_ID)
 131           device = GDK_X11_DEVICE_MANAGER_CORE (device_manager)->core_pointer;
 132         else if (device_id == VIRTUAL_CORE_KEYBOARD_ID)
 133           device = GDK_X11_DEVICE_MANAGER_CORE (device_manager)->core_keyboard;
 134       }
 135
 136   return device;
 137 }
 138
 139 /**
 140  * gdk_x11_device_get_id:
 141  * @device: a #GdkDevice
 142  *
 143  * Returns the device ID as seen by XInput2.
 144  *
 145  * <note>
 146  *   If gdk_disable_multidevice() has been called, this function
 147  *   will respectively return 2/3 for the core pointer and keyboard,
 148  *   (matching the IDs for the Virtual Core Pointer and Keyboard in
 149  *   XInput 2), but calling this function on any slave devices (i.e.
 150  *   those managed via XInput 1.x), will return 0.
 151  * </note>
 152  *
 153  * Returns: the XInput2 device ID.
 154  *
 155  * Since: 3.2
 156  **/
 157 gint
 158 gdk_x11_device_get_id (GdkDevice *device)
 159 {
 160   gint device_id = 0;
 161
 162   g_return_val_if_fail (GDK_IS_DEVICE (device), 0);
 163
 164 #ifdef XINPUT_2
 165   if (GDK_IS_X11_DEVICE_XI2 (device))
 166     device_id = _gdk_x11_device_xi2_get_id (GDK_X11_DEVICE_XI2 (device));
 167   else
 168 #endif /* XINPUT_2 */
 169     if (GDK_IS_X11_DEVICE_CORE (device))
 170       {
 171         if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 172           device_id = VIRTUAL_CORE_KEYBOARD_ID;
 173         else
 174           device_id = VIRTUAL_CORE_POINTER_ID;
 175       }
 176
 177   return device_id;
 178 }