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_2
  23 #include "gdkx11devicemanager-xi2.h"
  24 #endif
  25 #include "gdkinternals.h"
  26 #include "gdkprivate-x11.h"
  27
  28 /* Defines for VCP/VCK, to be used too
  29  * for the core protocol device manager
  30  */
  31 #define VIRTUAL_CORE_POINTER_ID 2
  32 #define VIRTUAL_CORE_KEYBOARD_ID 3
  33
  34 GdkDeviceManager *
  35 _gdk_x11_device_manager_new (GdkDisplay *display)
  36 {
  37   if (!g_getenv ("GDK_CORE_DEVICE_EVENTS"))
  38     {
  39 #ifdef XINPUT_2
  40       int opcode, firstevent, firsterror;
  41       Display *xdisplay;
  42
  43       xdisplay = GDK_DISPLAY_XDISPLAY (display);
  44
  45       if (XQueryExtension (xdisplay, "XInputExtension",
  46                            &opcode, &firstevent, &firsterror))
  47         {
  48           int major, minor;
  49
  50           major = 2;
  51 #ifdef XINPUT_2_2
  52           minor = 2;
  53 #else
  54           minor = 0;
  55 #endif /* XINPUT_2_2 */
  56
  57           if (!_gdk_disable_multidevice &&
  58               XIQueryVersion (xdisplay, &major, &minor) != BadRequest)
  59             {
  60               GdkX11DeviceManagerXI2 *device_manager_xi2;
  61
  62               GDK_NOTE (INPUT, g_print ("Creating XI2 device manager\n"));
  63
  64               device_manager_xi2 = g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_XI2,
  65                                                  "display", display,
  66                                                  "opcode", opcode,
  67                                                  "major", major,
  68                                                  "minor", minor,
  69                                                  NULL);
  70
  71               return GDK_DEVICE_MANAGER (device_manager_xi2);
  72             }
  73         }
  74 #endif /* XINPUT_2 */
  75     }
  76
  77   GDK_NOTE (INPUT, g_print ("Creating core device manager\n"));
  78
  79   return g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_CORE,
  80                        "display", display,
  81                        NULL);
  82 }
  83
  84 /**
  85  * gdk_x11_device_manager_lookup:
  86  * @device_manager: a #GdkDeviceManager
  87  * @device_id: a device ID, as understood by the XInput2 protocol
  88  *
  89  * Returns the #GdkDevice that wraps the given device ID.
  90  *
  91  * Returns: (transfer none): (allow-none): The #GdkDevice wrapping the device ID,
  92  *          or %NULL if the given ID doesn't currently represent a device.
  93  *
  94  * Since: 3.2
  95  **/
  96 GdkDevice *
  97 gdk_x11_device_manager_lookup (GdkDeviceManager *device_manager,
  98                                gint              device_id)
  99 {
 100   GdkDevice *device = NULL;
 101
 102   g_return_val_if_fail (GDK_IS_DEVICE_MANAGER (device_manager), NULL);
 103
 104 #ifdef XINPUT_2
 105   if (GDK_IS_X11_DEVICE_MANAGER_XI2 (device_manager))
 106     device = _gdk_x11_device_manager_xi2_lookup (GDK_X11_DEVICE_MANAGER_XI2 (device_manager),
 107                                                  device_id);
 108   else
 109 #endif /* XINPUT_2 */
 110     if (GDK_IS_X11_DEVICE_MANAGER_CORE (device_manager))
 111       {
 112         /* It is a core/xi1 device manager, we only map
 113          * IDs 2 and 3, matching XI2's Virtual Core Pointer
 114          * and Keyboard.
 115          */
 116         if (device_id == VIRTUAL_CORE_POINTER_ID)
 117           device = GDK_X11_DEVICE_MANAGER_CORE (device_manager)->core_pointer;
 118         else if (device_id == VIRTUAL_CORE_KEYBOARD_ID)
 119           device = GDK_X11_DEVICE_MANAGER_CORE (device_manager)->core_keyboard;
 120       }
 121
 122   return device;
 123 }
 124
 125 /**
 126  * gdk_x11_device_get_id:
 127  * @device: a #GdkDevice
 128  *
 129  * Returns the device ID as seen by XInput2.
 130  *
 131  * <note>
 132  *   If gdk_disable_multidevice() has been called, this function
 133  *   will respectively return 2/3 for the core pointer and keyboard,
 134  *   (matching the IDs for the Virtual Core Pointer and Keyboard in
 135  *   XInput 2), but calling this function on any slave devices (i.e.
 136  *   those managed via XInput 1.x), will return 0.
 137  * </note>
 138  *
 139  * Returns: the XInput2 device ID.
 140  *
 141  * Since: 3.2
 142  **/
 143 gint
 144 gdk_x11_device_get_id (GdkDevice *device)
 145 {
 146   gint device_id = 0;
 147
 148   g_return_val_if_fail (GDK_IS_DEVICE (device), 0);
 149
 150 #ifdef XINPUT_2
 151   if (GDK_IS_X11_DEVICE_XI2 (device))
 152     device_id = _gdk_x11_device_xi2_get_id (GDK_X11_DEVICE_XI2 (device));
 153   else
 154 #endif /* XINPUT_2 */
 155     if (GDK_IS_X11_DEVICE_CORE (device))
 156       {
 157         if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 158           device_id = VIRTUAL_CORE_KEYBOARD_ID;
 159         else
 160           device_id = VIRTUAL_CORE_POINTER_ID;
 161       }
 162
 163   return device_id;
 164 }