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