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