Pileus Git - ~andy/gtk/blob - gdk/x11/gdkdevice-xi2.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 "gdkx11device-xi2.h"
  23 #include "gdkdeviceprivate.h"
  24
  25 #include "gdkintl.h"
  26 #include "gdkasync.h"
  27 #include "gdkprivate-x11.h"
  28
  29 #ifdef XINPUT_2
  30
  31 #include <stdlib.h>
  32 #include <X11/Xlib.h>
  33 #include <X11/Xutil.h>
  34 #include <X11/extensions/XInput2.h>
  35
  36 #endif
  37
  38 struct _GdkX11DeviceXI2
  39 {
  40   GdkDevice parent_instance;
  41
  42   gint device_id;
  43 };
  44
  45 struct _GdkX11DeviceXI2Class
  46 {
  47   GdkDeviceClass parent_class;
  48 };
  49
  50 G_DEFINE_TYPE (GdkX11DeviceXI2, gdk_x11_device_xi2, GDK_TYPE_DEVICE)
  51
  52 #ifdef XINPUT_2
  53
  54 static void gdk_x11_device_xi2_get_property (GObject      *object,
  55                                              guint         prop_id,
  56                                              GValue       *value,
  57                                              GParamSpec   *pspec);
  58 static void gdk_x11_device_xi2_set_property (GObject      *object,
  59                                              guint         prop_id,
  60                                              const GValue *value,
  61                                              GParamSpec   *pspec);
  62
  63 static void gdk_x11_device_xi2_get_state (GdkDevice       *device,
  64                                           GdkWindow       *window,
  65                                           gdouble         *axes,
  66                                           GdkModifierType *mask);
  67 static void gdk_x11_device_xi2_set_window_cursor (GdkDevice *device,
  68                                                   GdkWindow *window,
  69                                                   GdkCursor *cursor);
  70 static void gdk_x11_device_xi2_warp (GdkDevice *device,
  71                                      GdkScreen *screen,
  72                                      gint       x,
  73                                      gint       y);
  74 static gboolean gdk_x11_device_xi2_query_state (GdkDevice        *device,
  75                                                 GdkWindow        *window,
  76                                                 GdkWindow       **root_window,
  77                                                 GdkWindow       **child_window,
  78                                                 gint             *root_x,
  79                                                 gint             *root_y,
  80                                                 gint             *win_x,
  81                                                 gint             *win_y,
  82                                                 GdkModifierType  *mask);
  83
  84 static GdkGrabStatus gdk_x11_device_xi2_grab   (GdkDevice     *device,
  85                                                 GdkWindow     *window,
  86                                                 gboolean       owner_events,
  87                                                 GdkEventMask   event_mask,
  88                                                 GdkWindow     *confine_to,
  89                                                 GdkCursor     *cursor,
  90                                                 guint32        time_);
  91 static void          gdk_x11_device_xi2_ungrab (GdkDevice     *device,
  92                                                 guint32        time_);
  93
  94 static GdkWindow * gdk_x11_device_xi2_window_at_position (GdkDevice       *device,
  95                                                           gint            *win_x,
  96                                                           gint            *win_y,
  97                                                           GdkModifierType *mask,
  98                                                           gboolean         get_toplevel);
  99 static void  gdk_x11_device_xi2_select_window_events (GdkDevice    *device,
 100                                                       GdkWindow    *window,
 101                                                       GdkEventMask  event_mask);
 102
 103
 104 enum {
 105   PROP_0,
 106   PROP_DEVICE_ID
 107 };
 108
 109 static void
 110 gdk_x11_device_xi2_class_init (GdkX11DeviceXI2Class *klass)
 111 {
 112   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 113   GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
 114
 115   object_class->get_property = gdk_x11_device_xi2_get_property;
 116   object_class->set_property = gdk_x11_device_xi2_set_property;
 117
 118   device_class->get_state = gdk_x11_device_xi2_get_state;
 119   device_class->set_window_cursor = gdk_x11_device_xi2_set_window_cursor;
 120   device_class->warp = gdk_x11_device_xi2_warp;
 121   device_class->query_state = gdk_x11_device_xi2_query_state;
 122   device_class->grab = gdk_x11_device_xi2_grab;
 123   device_class->ungrab = gdk_x11_device_xi2_ungrab;
 124   device_class->window_at_position = gdk_x11_device_xi2_window_at_position;
 125   device_class->select_window_events = gdk_x11_device_xi2_select_window_events;
 126
 127   g_object_class_install_property (object_class,
 128                                    PROP_DEVICE_ID,
 129                                    g_param_spec_int ("device-id",
 130                                                      P_("Device ID"),
 131                                                      P_("Device identifier"),
 132                                                      0, G_MAXINT, 0,
 133                                                      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 134 }
 135
 136 static void
 137 gdk_x11_device_xi2_init (GdkX11DeviceXI2 *device)
 138 {
 139 }
 140
 141 static void
 142 gdk_x11_device_xi2_get_property (GObject    *object,
 143                                  guint       prop_id,
 144                                  GValue     *value,
 145                                  GParamSpec *pspec)
 146 {
 147   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (object);
 148
 149   switch (prop_id)
 150     {
 151     case PROP_DEVICE_ID:
 152       g_value_set_int (value, device_xi2->device_id);
 153       break;
 154     default:
 155       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 156       break;
 157     }
 158 }
 159
 160 static void
 161 gdk_x11_device_xi2_set_property (GObject      *object,
 162                                  guint         prop_id,
 163                                  const GValue *value,
 164                                  GParamSpec   *pspec)
 165 {
 166   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (object);
 167
 168   switch (prop_id)
 169     {
 170     case PROP_DEVICE_ID:
 171       device_xi2->device_id = g_value_get_int (value);
 172       break;
 173     default:
 174       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 175       break;
 176     }
 177 }
 178
 179 static void
 180 gdk_x11_device_xi2_get_state (GdkDevice       *device,
 181                               GdkWindow       *window,
 182                               gdouble         *axes,
 183                               GdkModifierType *mask)
 184 {
 185   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 186
 187   if (axes)
 188     {
 189       GdkDisplay *display;
 190       XIDeviceInfo *info;
 191       gint i, j, ndevices;
 192
 193       display = gdk_device_get_display (device);
 194
 195       info = XIQueryDevice (GDK_DISPLAY_XDISPLAY (display),
 196                             device_xi2->device_id, &ndevices);
 197
 198       for (i = 0, j = 0; i < info->num_classes; i++)
 199         {
 200           XIAnyClassInfo *class_info = info->classes[i];
 201           GdkAxisUse use;
 202           gdouble value;
 203
 204           if (class_info->type != XIValuatorClass)
 205             continue;
 206
 207           value = ((XIValuatorClassInfo *) class_info)->value;
 208           use = gdk_device_get_axis_use (device, j);
 209
 210           switch (use)
 211             {
 212             case GDK_AXIS_X:
 213             case GDK_AXIS_Y:
 214             case GDK_AXIS_IGNORE:
 215               if (gdk_device_get_mode (device) == GDK_MODE_WINDOW)
 216                 _gdk_device_translate_window_coord (device, window, j, value, &axes[j]);
 217               else
 218                 {
 219                   gint root_x, root_y;
 220
 221                   /* FIXME: Maybe root coords chaching should happen here */
 222                   gdk_window_get_origin (window, &root_x, &root_y);
 223                   _gdk_device_translate_screen_coord (device, window,
 224                                                       root_x, root_y,
 225                                                       j, value,
 226                                                       &axes[j]);
 227                 }
 228               break;
 229             default:
 230               _gdk_device_translate_axis (device, j, value, &axes[j]);
 231               break;
 232             }
 233
 234           j++;
 235         }
 236
 237       XIFreeDeviceInfo (info);
 238     }
 239
 240   if (mask)
 241     gdk_x11_device_xi2_query_state (device, window,
 242                                     NULL, NULL,
 243                                     NULL, NULL,
 244                                     NULL, NULL,
 245                                     mask);
 246 }
 247
 248 static void
 249 gdk_x11_device_xi2_set_window_cursor (GdkDevice *device,
 250                                       GdkWindow *window,
 251                                       GdkCursor *cursor)
 252 {
 253   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 254
 255   /* Non-master devices don't have a cursor */
 256   if (gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_MASTER)
 257     return;
 258
 259   if (cursor)
 260     XIDefineCursor (GDK_WINDOW_XDISPLAY (window),
 261                     device_xi2->device_id,
 262                     GDK_WINDOW_XID (window),
 263                     gdk_x11_cursor_get_xcursor (cursor));
 264   else
 265     XIUndefineCursor (GDK_WINDOW_XDISPLAY (window),
 266                       device_xi2->device_id,
 267                       GDK_WINDOW_XID (window));
 268 }
 269
 270 static void
 271 gdk_x11_device_xi2_warp (GdkDevice *device,
 272                          GdkScreen *screen,
 273                          gint       x,
 274                          gint       y)
 275 {
 276   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 277   Window dest;
 278
 279   dest = GDK_WINDOW_XID (gdk_screen_get_root_window (screen));
 280
 281   XIWarpPointer (GDK_SCREEN_XDISPLAY (screen),
 282                  device_xi2->device_id,
 283                  None, dest,
 284                  0, 0, 0, 0, x, y);
 285 }
 286
 287 static gboolean
 288 gdk_x11_device_xi2_query_state (GdkDevice        *device,
 289                                 GdkWindow        *window,
 290                                 GdkWindow       **root_window,
 291                                 GdkWindow       **child_window,
 292                                 gint             *root_x,
 293                                 gint             *root_y,
 294                                 gint             *win_x,
 295                                 gint             *win_y,
 296                                 GdkModifierType  *mask)
 297 {
 298   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 299   GdkDisplay *display;
 300   GdkScreen *default_screen;
 301   Window xroot_window, xchild_window;
 302   gdouble xroot_x, xroot_y, xwin_x, xwin_y;
 303   XIButtonState button_state;
 304   XIModifierState mod_state;
 305   XIGroupState group_state;
 306
 307   if (!window || GDK_WINDOW_DESTROYED (window))
 308     return FALSE;
 309
 310   display = gdk_window_get_display (window);
 311   default_screen = gdk_display_get_default_screen (display);
 312
 313   if (G_LIKELY (GDK_X11_DISPLAY (display)->trusted_client))
 314     {
 315       if (!XIQueryPointer (GDK_WINDOW_XDISPLAY (window),
 316                            device_xi2->device_id,
 317                            GDK_WINDOW_XID (window),
 318                            &xroot_window,
 319                            &xchild_window,
 320                            &xroot_x, &xroot_y,
 321                            &xwin_x, &xwin_y,
 322                            &button_state,
 323                            &mod_state,
 324                            &group_state))
 325         return FALSE;
 326     }
 327   else
 328     {
 329       XSetWindowAttributes attributes;
 330       Display *xdisplay;
 331       Window xwindow, w;
 332
 333       /* FIXME: untrusted clients not multidevice-safe */
 334       xdisplay = GDK_SCREEN_XDISPLAY (default_screen);
 335       xwindow = GDK_SCREEN_XROOTWIN (default_screen);
 336
 337       w = XCreateWindow (xdisplay, xwindow, 0, 0, 1, 1, 0,
 338                          CopyFromParent, InputOnly, CopyFromParent,
 339                          0, &attributes);
 340       XIQueryPointer (xdisplay, device_xi2->device_id,
 341                       w,
 342                       &xroot_window,
 343                       &xchild_window,
 344                       &xroot_x, &xroot_y,
 345                       &xwin_x, &xwin_y,
 346                       &button_state,
 347                       &mod_state,
 348                       &group_state);
 349       XDestroyWindow (xdisplay, w);
 350     }
 351
 352   if (root_window)
 353     *root_window = gdk_x11_window_lookup_for_display (display, xroot_window);
 354
 355   if (child_window)
 356     *child_window = gdk_x11_window_lookup_for_display (display, xchild_window);
 357
 358   if (root_x)
 359     *root_x = (gint) xroot_x;
 360
 361   if (root_y)
 362     *root_y = (gint) xroot_y;
 363
 364   if (win_x)
 365     *win_x = (gint) xwin_x;
 366
 367   if (win_y)
 368     *win_y = (gint) xwin_y;
 369
 370   if (mask)
 371     *mask = _gdk_x11_device_xi2_translate_state (&mod_state, &button_state, &group_state);
 372
 373   free (button_state.mask);
 374
 375   return TRUE;
 376 }
 377
 378 static GdkGrabStatus
 379 gdk_x11_device_xi2_grab (GdkDevice    *device,
 380                          GdkWindow    *window,
 381                          gboolean      owner_events,
 382                          GdkEventMask  event_mask,
 383                          GdkWindow    *confine_to,
 384                          GdkCursor    *cursor,
 385                          guint32       time_)
 386 {
 387   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 388   GdkDisplay *display;
 389   XIEventMask mask;
 390   Window xwindow;
 391   Cursor xcursor;
 392   gint status;
 393
 394   display = gdk_device_get_display (device);
 395
 396   /* FIXME: confine_to is actually unused */
 397
 398   xwindow = GDK_WINDOW_XID (window);
 399
 400   if (!cursor)
 401     xcursor = None;
 402   else
 403     {
 404       _gdk_x11_cursor_update_theme (cursor);
 405       xcursor = gdk_x11_cursor_get_xcursor (cursor);
 406     }
 407
 408   mask.deviceid = device_xi2->device_id;
 409   mask.mask = _gdk_x11_device_xi2_translate_event_mask (event_mask, &mask.mask_len);
 410
 411 #ifdef G_ENABLE_DEBUG
 412   if (_gdk_debug_flags & GDK_DEBUG_NOGRABS)
 413     status = GrabSuccess;
 414   else
 415 #endif
 416   status = XIGrabDevice (GDK_DISPLAY_XDISPLAY (display),
 417                          device_xi2->device_id,
 418                          xwindow,
 419                          time_,
 420                          xcursor,
 421                          GrabModeAsync, GrabModeAsync,
 422                          owner_events,
 423                          &mask);
 424
 425   g_free (mask.mask);
 426
 427   _gdk_x11_display_update_grab_info (display, device, status);
 428
 429   return _gdk_x11_convert_grab_status (status);
 430 }
 431
 432 static void
 433 gdk_x11_device_xi2_ungrab (GdkDevice *device,
 434                            guint32    time_)
 435 {
 436   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 437   GdkDisplay *display;
 438   gulong serial;
 439
 440   display = gdk_device_get_display (device);
 441   serial = NextRequest (GDK_DISPLAY_XDISPLAY (display));
 442
 443   XIUngrabDevice (GDK_DISPLAY_XDISPLAY (display), device_xi2->device_id, time_);
 444
 445   _gdk_x11_display_update_grab_info_ungrab (display, device, time_, serial);
 446 }
 447
 448 static GdkWindow *
 449 gdk_x11_device_xi2_window_at_position (GdkDevice       *device,
 450                                        gint            *win_x,
 451                                        gint            *win_y,
 452                                        GdkModifierType *mask,
 453                                        gboolean         get_toplevel)
 454 {
 455   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 456   GdkDisplay *display;
 457   GdkScreen *screen;
 458   Display *xdisplay;
 459   GdkWindow *window;
 460   Window xwindow, root, child, last = None;
 461   gdouble xroot_x, xroot_y, xwin_x, xwin_y;
 462   XIButtonState button_state = { 0 };
 463   XIModifierState mod_state;
 464   XIGroupState group_state;
 465
 466   display = gdk_device_get_display (device);
 467   screen = gdk_display_get_default_screen (display);
 468
 469   /* This function really only works if the mouse pointer is held still
 470    * during its operation. If it moves from one leaf window to another
 471    * than we'll end up with inaccurate values for win_x, win_y
 472    * and the result.
 473    */
 474   gdk_x11_display_grab (display);
 475
 476   xdisplay = GDK_SCREEN_XDISPLAY (screen);
 477   xwindow = GDK_SCREEN_XROOTWIN (screen);
 478
 479   if (G_LIKELY (GDK_X11_DISPLAY (display)->trusted_client))
 480     {
 481       XIQueryPointer (xdisplay,
 482                       device_xi2->device_id,
 483                       xwindow,
 484                       &root, &child,
 485                       &xroot_x, &xroot_y,
 486                       &xwin_x, &xwin_y,
 487                       &button_state,
 488                       &mod_state,
 489                       &group_state);
 490
 491       if (root == xwindow)
 492         xwindow = child;
 493       else
 494         xwindow = root;
 495     }
 496   else
 497     {
 498       gint i, screens, width, height;
 499       GList *toplevels, *list;
 500       Window pointer_window, root, child;
 501
 502       /* FIXME: untrusted clients case not multidevice-safe */
 503       pointer_window = None;
 504       screens = gdk_display_get_n_screens (display);
 505
 506       for (i = 0; i < screens; ++i)
 507         {
 508           screen = gdk_display_get_screen (display, i);
 509           toplevels = gdk_screen_get_toplevel_windows (screen);
 510           for (list = toplevels; list != NULL; list = g_list_next (list))
 511             {
 512               window = GDK_WINDOW (list->data);
 513               xwindow = GDK_WINDOW_XID (window);
 514
 515               /* Free previous button mask, if any */
 516               g_free (button_state.mask);
 517
 518               gdk_x11_display_error_trap_push (display);
 519               XIQueryPointer (xdisplay,
 520                               device_xi2->device_id,
 521                               xwindow,
 522                               &root, &child,
 523                               &xroot_x, &xroot_y,
 524                               &xwin_x, &xwin_y,
 525                               &button_state,
 526                               &mod_state,
 527                               &group_state);
 528               if (gdk_x11_display_error_trap_pop (display))
 529                 continue;
 530               if (child != None)
 531                 {
 532                   pointer_window = child;
 533                   break;
 534                 }
 535               gdk_window_get_geometry (window, NULL, NULL, &width, &height);
 536               if (xwin_x >= 0 && xwin_y >= 0 && xwin_x < width && xwin_y < height)
 537                 {
 538                   /* A childless toplevel, or below another window? */
 539                   XSetWindowAttributes attributes;
 540                   Window w;
 541
 542                   free (button_state.mask);
 543
 544                   w = XCreateWindow (xdisplay, xwindow, (int)xwin_x, (int)xwin_y, 1, 1, 0,
 545                                      CopyFromParent, InputOnly, CopyFromParent,
 546                                      0, &attributes);
 547                   XMapWindow (xdisplay, w);
 548                   XIQueryPointer (xdisplay,
 549                                   device_xi2->device_id,
 550                                   xwindow,
 551                                   &root, &child,
 552                                   &xroot_x, &xroot_y,
 553                                   &xwin_x, &xwin_y,
 554                                   &button_state,
 555                                   &mod_state,
 556                                   &group_state);
 557                   XDestroyWindow (xdisplay, w);
 558                   if (child == w)
 559                     {
 560                       pointer_window = xwindow;
 561                       break;
 562                     }
 563                 }
 564             }
 565
 566           g_list_free (toplevels);
 567           if (pointer_window != None)
 568             break;
 569         }
 570
 571       xwindow = pointer_window;
 572     }
 573
 574   while (xwindow)
 575     {
 576       last = xwindow;
 577       free (button_state.mask);
 578
 579       gdk_x11_display_error_trap_push (display);
 580       XIQueryPointer (xdisplay,
 581                       device_xi2->device_id,
 582                       xwindow,
 583                       &root, &xwindow,
 584                       &xroot_x, &xroot_y,
 585                       &xwin_x, &xwin_y,
 586                       &button_state,
 587                       &mod_state,
 588                       &group_state);
 589       if (gdk_x11_display_error_trap_pop (display))
 590         break;
 591
 592       if (get_toplevel && last != root &&
 593           (window = gdk_x11_window_lookup_for_display (display, last)) != NULL &&
 594           GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
 595         {
 596           xwindow = last;
 597           break;
 598         }
 599     }
 600
 601   gdk_x11_display_ungrab (display);
 602
 603   window = gdk_x11_window_lookup_for_display (display, last);
 604
 605   if (win_x)
 606     *win_x = (window) ? (gint) xwin_x : -1;
 607
 608   if (win_y)
 609     *win_y = (window) ? (gint) xwin_y : -1;
 610
 611   if (mask)
 612     *mask = _gdk_x11_device_xi2_translate_state (&mod_state, &button_state, &group_state);
 613
 614   free (button_state.mask);
 615
 616   return window;
 617 }
 618
 619 static void
 620 gdk_x11_device_xi2_select_window_events (GdkDevice    *device,
 621                                          GdkWindow    *window,
 622                                          GdkEventMask  event_mask)
 623 {
 624   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 625   XIEventMask evmask;
 626
 627   evmask.deviceid = device_xi2->device_id;
 628   evmask.mask = _gdk_x11_device_xi2_translate_event_mask (event_mask, &evmask.mask_len);
 629
 630   XISelectEvents (GDK_WINDOW_XDISPLAY (window),
 631                   GDK_WINDOW_XID (window),
 632                   &evmask, 1);
 633
 634   g_free (evmask.mask);
 635 }
 636
 637 guchar *
 638 _gdk_x11_device_xi2_translate_event_mask (GdkEventMask  event_mask,
 639                                           gint         *len)
 640 {
 641   guchar *mask;
 642
 643   *len = XIMaskLen (XI_LASTEVENT);
 644   mask = g_new0 (guchar, *len);
 645
 646   if (event_mask & GDK_POINTER_MOTION_MASK ||
 647       event_mask & GDK_POINTER_MOTION_HINT_MASK)
 648     XISetMask (mask, XI_Motion);
 649
 650   if (event_mask & GDK_BUTTON_MOTION_MASK ||
 651       event_mask & GDK_BUTTON1_MOTION_MASK ||
 652       event_mask & GDK_BUTTON2_MOTION_MASK ||
 653       event_mask & GDK_BUTTON3_MOTION_MASK)
 654     {
 655       XISetMask (mask, XI_ButtonPress);
 656       XISetMask (mask, XI_ButtonRelease);
 657       XISetMask (mask, XI_Motion);
 658     }
 659
 660   if (event_mask & GDK_SCROLL_MASK)
 661     {
 662       XISetMask (mask, XI_ButtonPress);
 663       XISetMask (mask, XI_ButtonRelease);
 664     }
 665
 666   if (event_mask & GDK_BUTTON_PRESS_MASK)
 667     XISetMask (mask, XI_ButtonPress);
 668
 669   if (event_mask & GDK_BUTTON_RELEASE_MASK)
 670     XISetMask (mask, XI_ButtonRelease);
 671
 672   if (event_mask & GDK_KEY_PRESS_MASK)
 673     XISetMask (mask, XI_KeyPress);
 674
 675   if (event_mask & GDK_KEY_RELEASE_MASK)
 676     XISetMask (mask, XI_KeyRelease);
 677
 678   if (event_mask & GDK_ENTER_NOTIFY_MASK)
 679     XISetMask (mask, XI_Enter);
 680
 681   if (event_mask & GDK_LEAVE_NOTIFY_MASK)
 682     XISetMask (mask, XI_Leave);
 683
 684   if (event_mask & GDK_FOCUS_CHANGE_MASK)
 685     {
 686       XISetMask (mask, XI_FocusIn);
 687       XISetMask (mask, XI_FocusOut);
 688     }
 689
 690   return mask;
 691 }
 692
 693 guint
 694 _gdk_x11_device_xi2_translate_state (XIModifierState *mods_state,
 695                                      XIButtonState   *buttons_state,
 696                                      XIGroupState    *group_state)
 697 {
 698   guint state = 0;
 699
 700   if (mods_state)
 701     state = (guint) mods_state->base | mods_state->latched | mods_state->locked;
 702
 703   if (buttons_state)
 704     {
 705       gint len, i;
 706
 707       /* We're only interested in the first 5 buttons */
 708       len = MIN (5, buttons_state->mask_len * 8);
 709
 710       for (i = 0; i < len; i++)
 711         {
 712           if (!XIMaskIsSet (buttons_state->mask, i))
 713             continue;
 714
 715           switch (i)
 716             {
 717             case 1:
 718               state |= GDK_BUTTON1_MASK;
 719               break;
 720             case 2:
 721               state |= GDK_BUTTON2_MASK;
 722               break;
 723             case 3:
 724               state |= GDK_BUTTON3_MASK;
 725               break;
 726             case 4:
 727               state |= GDK_BUTTON4_MASK;
 728               break;
 729             case 5:
 730               state |= GDK_BUTTON5_MASK;
 731               break;
 732             default:
 733               break;
 734             }
 735         }
 736     }
 737
 738   if (group_state)
 739     {
 740       gint group;
 741
 742       group = group_state->base + group_state->latched + group_state->locked;
 743
 744       /* FIXME: do we need the XKB complications for this ? */
 745       group = CLAMP(group, 0, 3);
 746
 747       state |= group << 13;
 748     }
 749
 750   return state;
 751 }
 752
 753 gint
 754 _gdk_x11_device_xi2_get_id (GdkX11DeviceXI2 *device)
 755 {
 756   g_return_val_if_fail (GDK_IS_X11_DEVICE_XI2 (device), 0);
 757
 758   return device->device_id;
 759 }
 760
 761 #else /* XINPUT_2 */
 762
 763 static void
 764 gdk_x11_device_xi2_class_init (GdkX11DeviceXI2Class *klass)
 765 {
 766 }
 767
 768 static void
 769 gdk_x11_device_xi2_init (GdkX11DeviceXI2 *device)
 770 {
 771 }
 772
 773 #endif /* XINPUT_2 */