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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "config.h"
  19
  20 #include "gdkx11device-xi2.h"
  21 #include "gdkdeviceprivate.h"
  22
  23 #include "gdkintl.h"
  24 #include "gdkasync.h"
  25 #include "gdkprivate-x11.h"
  26
  27 #include <stdlib.h>
  28 #include <X11/Xlib.h>
  29 #include <X11/Xutil.h>
  30 #include <X11/extensions/XInput2.h>
  31
  32
  33 typedef struct _ScrollValuator ScrollValuator;
  34
  35 struct _ScrollValuator
  36 {
  37   guint n_valuator       : 4;
  38   guint direction        : 4;
  39   guint last_value_valid : 1;
  40   gdouble last_value;
  41 };
  42
  43 struct _GdkX11DeviceXI2
  44 {
  45   GdkDevice parent_instance;
  46
  47   gint device_id;
  48   GArray *scroll_valuators;
  49 };
  50
  51 struct _GdkX11DeviceXI2Class
  52 {
  53   GdkDeviceClass parent_class;
  54 };
  55
  56 G_DEFINE_TYPE (GdkX11DeviceXI2, gdk_x11_device_xi2, GDK_TYPE_DEVICE)
  57
  58
  59 static void gdk_x11_device_xi2_finalize     (GObject      *object);
  60 static void gdk_x11_device_xi2_get_property (GObject      *object,
  61                                              guint         prop_id,
  62                                              GValue       *value,
  63                                              GParamSpec   *pspec);
  64 static void gdk_x11_device_xi2_set_property (GObject      *object,
  65                                              guint         prop_id,
  66                                              const GValue *value,
  67                                              GParamSpec   *pspec);
  68
  69 static void gdk_x11_device_xi2_get_state (GdkDevice       *device,
  70                                           GdkWindow       *window,
  71                                           gdouble         *axes,
  72                                           GdkModifierType *mask);
  73 static void gdk_x11_device_xi2_set_window_cursor (GdkDevice *device,
  74                                                   GdkWindow *window,
  75                                                   GdkCursor *cursor);
  76 static void gdk_x11_device_xi2_warp (GdkDevice *device,
  77                                      GdkScreen *screen,
  78                                      gint       x,
  79                                      gint       y);
  80 static gboolean gdk_x11_device_xi2_query_state (GdkDevice        *device,
  81                                                 GdkWindow        *window,
  82                                                 GdkWindow       **root_window,
  83                                                 GdkWindow       **child_window,
  84                                                 gint             *root_x,
  85                                                 gint             *root_y,
  86                                                 gint             *win_x,
  87                                                 gint             *win_y,
  88                                                 GdkModifierType  *mask);
  89
  90 static GdkGrabStatus gdk_x11_device_xi2_grab   (GdkDevice     *device,
  91                                                 GdkWindow     *window,
  92                                                 gboolean       owner_events,
  93                                                 GdkEventMask   event_mask,
  94                                                 GdkWindow     *confine_to,
  95                                                 GdkCursor     *cursor,
  96                                                 guint32        time_);
  97 static void          gdk_x11_device_xi2_ungrab (GdkDevice     *device,
  98                                                 guint32        time_);
  99
 100 static GdkWindow * gdk_x11_device_xi2_window_at_position (GdkDevice       *device,
 101                                                           gint            *win_x,
 102                                                           gint            *win_y,
 103                                                           GdkModifierType *mask,
 104                                                           gboolean         get_toplevel);
 105 static void  gdk_x11_device_xi2_select_window_events (GdkDevice    *device,
 106                                                       GdkWindow    *window,
 107                                                       GdkEventMask  event_mask);
 108
 109
 110 enum {
 111   PROP_0,
 112   PROP_DEVICE_ID
 113 };
 114
 115 static void
 116 gdk_x11_device_xi2_class_init (GdkX11DeviceXI2Class *klass)
 117 {
 118   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 119   GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
 120
 121   object_class->finalize = gdk_x11_device_xi2_finalize;
 122   object_class->get_property = gdk_x11_device_xi2_get_property;
 123   object_class->set_property = gdk_x11_device_xi2_set_property;
 124
 125   device_class->get_state = gdk_x11_device_xi2_get_state;
 126   device_class->set_window_cursor = gdk_x11_device_xi2_set_window_cursor;
 127   device_class->warp = gdk_x11_device_xi2_warp;
 128   device_class->query_state = gdk_x11_device_xi2_query_state;
 129   device_class->grab = gdk_x11_device_xi2_grab;
 130   device_class->ungrab = gdk_x11_device_xi2_ungrab;
 131   device_class->window_at_position = gdk_x11_device_xi2_window_at_position;
 132   device_class->select_window_events = gdk_x11_device_xi2_select_window_events;
 133
 134   g_object_class_install_property (object_class,
 135                                    PROP_DEVICE_ID,
 136                                    g_param_spec_int ("device-id",
 137                                                      P_("Device ID"),
 138                                                      P_("Device identifier"),
 139                                                      0, G_MAXINT, 0,
 140                                                      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 141 }
 142
 143 static void
 144 gdk_x11_device_xi2_init (GdkX11DeviceXI2 *device)
 145 {
 146   device->scroll_valuators = g_array_new (FALSE, FALSE, sizeof (ScrollValuator));
 147 }
 148
 149 static void
 150 gdk_x11_device_xi2_finalize (GObject *object)
 151 {
 152   GdkX11DeviceXI2 *device = GDK_X11_DEVICE_XI2 (object);
 153
 154   g_array_free (device->scroll_valuators, TRUE);
 155
 156   G_OBJECT_CLASS (gdk_x11_device_xi2_parent_class)->finalize (object);
 157 }
 158
 159 static void
 160 gdk_x11_device_xi2_get_property (GObject    *object,
 161                                  guint       prop_id,
 162                                  GValue     *value,
 163                                  GParamSpec *pspec)
 164 {
 165   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (object);
 166
 167   switch (prop_id)
 168     {
 169     case PROP_DEVICE_ID:
 170       g_value_set_int (value, device_xi2->device_id);
 171       break;
 172     default:
 173       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 174       break;
 175     }
 176 }
 177
 178 static void
 179 gdk_x11_device_xi2_set_property (GObject      *object,
 180                                  guint         prop_id,
 181                                  const GValue *value,
 182                                  GParamSpec   *pspec)
 183 {
 184   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (object);
 185
 186   switch (prop_id)
 187     {
 188     case PROP_DEVICE_ID:
 189       device_xi2->device_id = g_value_get_int (value);
 190       break;
 191     default:
 192       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 193       break;
 194     }
 195 }
 196
 197 static void
 198 gdk_x11_device_xi2_get_state (GdkDevice       *device,
 199                               GdkWindow       *window,
 200                               gdouble         *axes,
 201                               GdkModifierType *mask)
 202 {
 203   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 204
 205   if (axes)
 206     {
 207       GdkDisplay *display;
 208       XIDeviceInfo *info;
 209       gint i, j, ndevices;
 210
 211       display = gdk_device_get_display (device);
 212
 213       gdk_x11_display_error_trap_push (display);
 214       info = XIQueryDevice (GDK_DISPLAY_XDISPLAY (display),
 215                             device_xi2->device_id, &ndevices);
 216       gdk_x11_display_error_trap_pop_ignored (display);
 217
 218       for (i = 0, j = 0; info && i < info->num_classes; i++)
 219         {
 220           XIAnyClassInfo *class_info = info->classes[i];
 221           GdkAxisUse use;
 222           gdouble value;
 223
 224           if (class_info->type != XIValuatorClass)
 225             continue;
 226
 227           value = ((XIValuatorClassInfo *) class_info)->value;
 228           use = gdk_device_get_axis_use (device, j);
 229
 230           switch (use)
 231             {
 232             case GDK_AXIS_X:
 233             case GDK_AXIS_Y:
 234             case GDK_AXIS_IGNORE:
 235               if (gdk_device_get_mode (device) == GDK_MODE_WINDOW)
 236                 _gdk_device_translate_window_coord (device, window, j, value, &axes[j]);
 237               else
 238                 {
 239                   gint root_x, root_y;
 240
 241                   /* FIXME: Maybe root coords chaching should happen here */
 242                   gdk_window_get_origin (window, &root_x, &root_y);
 243                   _gdk_device_translate_screen_coord (device, window,
 244                                                       root_x, root_y,
 245                                                       j, value,
 246                                                       &axes[j]);
 247                 }
 248               break;
 249             default:
 250               _gdk_device_translate_axis (device, j, value, &axes[j]);
 251               break;
 252             }
 253
 254           j++;
 255         }
 256
 257       if (info)
 258         XIFreeDeviceInfo (info);
 259     }
 260
 261   if (mask)
 262     gdk_x11_device_xi2_query_state (device, window,
 263                                     NULL, NULL,
 264                                     NULL, NULL,
 265                                     NULL, NULL,
 266                                     mask);
 267 }
 268
 269 static void
 270 gdk_x11_device_xi2_set_window_cursor (GdkDevice *device,
 271                                       GdkWindow *window,
 272                                       GdkCursor *cursor)
 273 {
 274   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 275
 276   /* Non-master devices don't have a cursor */
 277   if (gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_MASTER)
 278     return;
 279
 280   if (cursor)
 281     XIDefineCursor (GDK_WINDOW_XDISPLAY (window),
 282                     device_xi2->device_id,
 283                     GDK_WINDOW_XID (window),
 284                     gdk_x11_cursor_get_xcursor (cursor));
 285   else
 286     XIUndefineCursor (GDK_WINDOW_XDISPLAY (window),
 287                       device_xi2->device_id,
 288                       GDK_WINDOW_XID (window));
 289 }
 290
 291 static void
 292 gdk_x11_device_xi2_warp (GdkDevice *device,
 293                          GdkScreen *screen,
 294                          gint       x,
 295                          gint       y)
 296 {
 297   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 298   Window dest;
 299
 300   dest = GDK_WINDOW_XID (gdk_screen_get_root_window (screen));
 301
 302   XIWarpPointer (GDK_SCREEN_XDISPLAY (screen),
 303                  device_xi2->device_id,
 304                  None, dest,
 305                  0, 0, 0, 0, x, y);
 306 }
 307
 308 static gboolean
 309 gdk_x11_device_xi2_query_state (GdkDevice        *device,
 310                                 GdkWindow        *window,
 311                                 GdkWindow       **root_window,
 312                                 GdkWindow       **child_window,
 313                                 gint             *root_x,
 314                                 gint             *root_y,
 315                                 gint             *win_x,
 316                                 gint             *win_y,
 317                                 GdkModifierType  *mask)
 318 {
 319   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 320   GdkDisplay *display;
 321   GdkScreen *default_screen;
 322   Window xroot_window, xchild_window;
 323   gdouble xroot_x, xroot_y, xwin_x, xwin_y;
 324   XIButtonState button_state;
 325   XIModifierState mod_state;
 326   XIGroupState group_state;
 327
 328   if (!window || GDK_WINDOW_DESTROYED (window))
 329     return FALSE;
 330
 331   display = gdk_window_get_display (window);
 332   default_screen = gdk_display_get_default_screen (display);
 333
 334   if (G_LIKELY (GDK_X11_DISPLAY (display)->trusted_client))
 335     {
 336       if (!XIQueryPointer (GDK_WINDOW_XDISPLAY (window),
 337                            device_xi2->device_id,
 338                            GDK_WINDOW_XID (window),
 339                            &xroot_window,
 340                            &xchild_window,
 341                            &xroot_x, &xroot_y,
 342                            &xwin_x, &xwin_y,
 343                            &button_state,
 344                            &mod_state,
 345                            &group_state))
 346         return FALSE;
 347     }
 348   else
 349     {
 350       XSetWindowAttributes attributes;
 351       Display *xdisplay;
 352       Window xwindow, w;
 353
 354       /* FIXME: untrusted clients not multidevice-safe */
 355       xdisplay = GDK_SCREEN_XDISPLAY (default_screen);
 356       xwindow = GDK_SCREEN_XROOTWIN (default_screen);
 357
 358       w = XCreateWindow (xdisplay, xwindow, 0, 0, 1, 1, 0,
 359                          CopyFromParent, InputOnly, CopyFromParent,
 360                          0, &attributes);
 361       XIQueryPointer (xdisplay, device_xi2->device_id,
 362                       w,
 363                       &xroot_window,
 364                       &xchild_window,
 365                       &xroot_x, &xroot_y,
 366                       &xwin_x, &xwin_y,
 367                       &button_state,
 368                       &mod_state,
 369                       &group_state);
 370       XDestroyWindow (xdisplay, w);
 371     }
 372
 373   if (root_window)
 374     *root_window = gdk_x11_window_lookup_for_display (display, xroot_window);
 375
 376   if (child_window)
 377     *child_window = gdk_x11_window_lookup_for_display (display, xchild_window);
 378
 379   if (root_x)
 380     *root_x = (gint) xroot_x;
 381
 382   if (root_y)
 383     *root_y = (gint) xroot_y;
 384
 385   if (win_x)
 386     *win_x = (gint) xwin_x;
 387
 388   if (win_y)
 389     *win_y = (gint) xwin_y;
 390
 391   if (mask)
 392     *mask = _gdk_x11_device_xi2_translate_state (&mod_state, &button_state, &group_state);
 393
 394   free (button_state.mask);
 395
 396   return TRUE;
 397 }
 398
 399 static GdkGrabStatus
 400 gdk_x11_device_xi2_grab (GdkDevice    *device,
 401                          GdkWindow    *window,
 402                          gboolean      owner_events,
 403                          GdkEventMask  event_mask,
 404                          GdkWindow    *confine_to,
 405                          GdkCursor    *cursor,
 406                          guint32       time_)
 407 {
 408   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 409   GdkX11DeviceManagerXI2 *device_manager_xi2;
 410   GdkDisplay *display;
 411   XIEventMask mask;
 412   Window xwindow;
 413   Cursor xcursor;
 414   gint status;
 415
 416   display = gdk_device_get_display (device);
 417   device_manager_xi2 = GDK_X11_DEVICE_MANAGER_XI2 (gdk_display_get_device_manager (display));
 418
 419   /* FIXME: confine_to is actually unused */
 420
 421   xwindow = GDK_WINDOW_XID (window);
 422
 423   if (!cursor)
 424     xcursor = None;
 425   else
 426     {
 427       _gdk_x11_cursor_update_theme (cursor);
 428       xcursor = gdk_x11_cursor_get_xcursor (cursor);
 429     }
 430
 431   mask.deviceid = device_xi2->device_id;
 432   mask.mask = _gdk_x11_device_xi2_translate_event_mask (device_manager_xi2,
 433                                                         event_mask,
 434                                                         &mask.mask_len);
 435
 436 #ifdef G_ENABLE_DEBUG
 437   if (_gdk_debug_flags & GDK_DEBUG_NOGRABS)
 438     status = GrabSuccess;
 439   else
 440 #endif
 441   status = XIGrabDevice (GDK_DISPLAY_XDISPLAY (display),
 442                          device_xi2->device_id,
 443                          xwindow,
 444                          time_,
 445                          xcursor,
 446                          GrabModeAsync, GrabModeAsync,
 447                          owner_events,
 448                          &mask);
 449
 450   g_free (mask.mask);
 451
 452   _gdk_x11_display_update_grab_info (display, device, status);
 453
 454   return _gdk_x11_convert_grab_status (status);
 455 }
 456
 457 static void
 458 gdk_x11_device_xi2_ungrab (GdkDevice *device,
 459                            guint32    time_)
 460 {
 461   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 462   GdkDisplay *display;
 463   gulong serial;
 464
 465   display = gdk_device_get_display (device);
 466   serial = NextRequest (GDK_DISPLAY_XDISPLAY (display));
 467
 468   XIUngrabDevice (GDK_DISPLAY_XDISPLAY (display), device_xi2->device_id, time_);
 469
 470   _gdk_x11_display_update_grab_info_ungrab (display, device, time_, serial);
 471 }
 472
 473 static GdkWindow *
 474 gdk_x11_device_xi2_window_at_position (GdkDevice       *device,
 475                                        gint            *win_x,
 476                                        gint            *win_y,
 477                                        GdkModifierType *mask,
 478                                        gboolean         get_toplevel)
 479 {
 480   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 481   GdkDisplay *display;
 482   GdkScreen *screen;
 483   Display *xdisplay;
 484   GdkWindow *window;
 485   Window xwindow, root, child, last = None;
 486   gdouble xroot_x, xroot_y, xwin_x, xwin_y;
 487   XIButtonState button_state = { 0 };
 488   XIModifierState mod_state;
 489   XIGroupState group_state;
 490
 491   display = gdk_device_get_display (device);
 492   screen = gdk_display_get_default_screen (display);
 493
 494   /* This function really only works if the mouse pointer is held still
 495    * during its operation. If it moves from one leaf window to another
 496    * than we'll end up with inaccurate values for win_x, win_y
 497    * and the result.
 498    */
 499   gdk_x11_display_grab (display);
 500
 501   xdisplay = GDK_SCREEN_XDISPLAY (screen);
 502   xwindow = GDK_SCREEN_XROOTWIN (screen);
 503
 504   if (G_LIKELY (GDK_X11_DISPLAY (display)->trusted_client))
 505     {
 506       XIQueryPointer (xdisplay,
 507                       device_xi2->device_id,
 508                       xwindow,
 509                       &root, &child,
 510                       &xroot_x, &xroot_y,
 511                       &xwin_x, &xwin_y,
 512                       &button_state,
 513                       &mod_state,
 514                       &group_state);
 515
 516       if (root == xwindow)
 517         xwindow = child;
 518       else
 519         xwindow = root;
 520     }
 521   else
 522     {
 523       gint i, screens, width, height;
 524       GList *toplevels, *list;
 525       Window pointer_window, root, child;
 526
 527       /* FIXME: untrusted clients case not multidevice-safe */
 528       pointer_window = None;
 529       screens = gdk_display_get_n_screens (display);
 530
 531       for (i = 0; i < screens; ++i)
 532         {
 533           screen = gdk_display_get_screen (display, i);
 534           toplevels = gdk_screen_get_toplevel_windows (screen);
 535           for (list = toplevels; list != NULL; list = g_list_next (list))
 536             {
 537               window = GDK_WINDOW (list->data);
 538               xwindow = GDK_WINDOW_XID (window);
 539
 540               /* Free previous button mask, if any */
 541               g_free (button_state.mask);
 542
 543               gdk_x11_display_error_trap_push (display);
 544               XIQueryPointer (xdisplay,
 545                               device_xi2->device_id,
 546                               xwindow,
 547                               &root, &child,
 548                               &xroot_x, &xroot_y,
 549                               &xwin_x, &xwin_y,
 550                               &button_state,
 551                               &mod_state,
 552                               &group_state);
 553               if (gdk_x11_display_error_trap_pop (display))
 554                 continue;
 555               if (child != None)
 556                 {
 557                   pointer_window = child;
 558                   break;
 559                 }
 560               gdk_window_get_geometry (window, NULL, NULL, &width, &height);
 561               if (xwin_x >= 0 && xwin_y >= 0 && xwin_x < width && xwin_y < height)
 562                 {
 563                   /* A childless toplevel, or below another window? */
 564                   XSetWindowAttributes attributes;
 565                   Window w;
 566
 567                   free (button_state.mask);
 568
 569                   w = XCreateWindow (xdisplay, xwindow, (int)xwin_x, (int)xwin_y, 1, 1, 0,
 570                                      CopyFromParent, InputOnly, CopyFromParent,
 571                                      0, &attributes);
 572                   XMapWindow (xdisplay, w);
 573                   XIQueryPointer (xdisplay,
 574                                   device_xi2->device_id,
 575                                   xwindow,
 576                                   &root, &child,
 577                                   &xroot_x, &xroot_y,
 578                                   &xwin_x, &xwin_y,
 579                                   &button_state,
 580                                   &mod_state,
 581                                   &group_state);
 582                   XDestroyWindow (xdisplay, w);
 583                   if (child == w)
 584                     {
 585                       pointer_window = xwindow;
 586                       break;
 587                     }
 588                 }
 589             }
 590
 591           g_list_free (toplevels);
 592           if (pointer_window != None)
 593             break;
 594         }
 595
 596       xwindow = pointer_window;
 597     }
 598
 599   while (xwindow)
 600     {
 601       last = xwindow;
 602       free (button_state.mask);
 603
 604       gdk_x11_display_error_trap_push (display);
 605       XIQueryPointer (xdisplay,
 606                       device_xi2->device_id,
 607                       xwindow,
 608                       &root, &xwindow,
 609                       &xroot_x, &xroot_y,
 610                       &xwin_x, &xwin_y,
 611                       &button_state,
 612                       &mod_state,
 613                       &group_state);
 614       if (gdk_x11_display_error_trap_pop (display))
 615         break;
 616
 617       if (get_toplevel && last != root &&
 618           (window = gdk_x11_window_lookup_for_display (display, last)) != NULL &&
 619           GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
 620         {
 621           xwindow = last;
 622           break;
 623         }
 624     }
 625
 626   gdk_x11_display_ungrab (display);
 627
 628   window = gdk_x11_window_lookup_for_display (display, last);
 629
 630   if (win_x)
 631     *win_x = (window) ? (gint) xwin_x : -1;
 632
 633   if (win_y)
 634     *win_y = (window) ? (gint) xwin_y : -1;
 635
 636   if (mask)
 637     *mask = _gdk_x11_device_xi2_translate_state (&mod_state, &button_state, &group_state);
 638
 639   free (button_state.mask);
 640
 641   return window;
 642 }
 643
 644 static void
 645 gdk_x11_device_xi2_select_window_events (GdkDevice    *device,
 646                                          GdkWindow    *window,
 647                                          GdkEventMask  event_mask)
 648 {
 649   GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
 650   GdkX11DeviceManagerXI2 *device_manager_xi2;
 651   GdkDisplay *display;
 652   XIEventMask evmask;
 653
 654   display = gdk_device_get_display (device);
 655   device_manager_xi2 = GDK_X11_DEVICE_MANAGER_XI2 (gdk_display_get_device_manager (display));
 656
 657   evmask.deviceid = device_xi2->device_id;
 658   evmask.mask = _gdk_x11_device_xi2_translate_event_mask (device_manager_xi2,
 659                                                           event_mask,
 660                                                           &evmask.mask_len);
 661
 662   XISelectEvents (GDK_WINDOW_XDISPLAY (window),
 663                   GDK_WINDOW_XID (window),
 664                   &evmask, 1);
 665
 666   g_free (evmask.mask);
 667 }
 668
 669 guchar *
 670 _gdk_x11_device_xi2_translate_event_mask (GdkX11DeviceManagerXI2 *device_manager_xi2,
 671                                           GdkEventMask            event_mask,
 672                                           gint                   *len)
 673 {
 674   guchar *mask;
 675   gint minor;
 676
 677   g_object_get (device_manager_xi2, "minor", &minor, NULL);
 678
 679   *len = XIMaskLen (XI_LASTEVENT);
 680   mask = g_new0 (guchar, *len);
 681
 682   if (event_mask & GDK_POINTER_MOTION_MASK ||
 683       event_mask & GDK_POINTER_MOTION_HINT_MASK)
 684     XISetMask (mask, XI_Motion);
 685
 686   if (event_mask & GDK_BUTTON_MOTION_MASK ||
 687       event_mask & GDK_BUTTON1_MOTION_MASK ||
 688       event_mask & GDK_BUTTON2_MOTION_MASK ||
 689       event_mask & GDK_BUTTON3_MOTION_MASK)
 690     {
 691       XISetMask (mask, XI_ButtonPress);
 692       XISetMask (mask, XI_ButtonRelease);
 693       XISetMask (mask, XI_Motion);
 694     }
 695
 696   if (event_mask & GDK_SCROLL_MASK)
 697     {
 698       XISetMask (mask, XI_ButtonPress);
 699       XISetMask (mask, XI_ButtonRelease);
 700     }
 701
 702   if (event_mask & GDK_BUTTON_PRESS_MASK)
 703     XISetMask (mask, XI_ButtonPress);
 704
 705   if (event_mask & GDK_BUTTON_RELEASE_MASK)
 706     XISetMask (mask, XI_ButtonRelease);
 707
 708   if (event_mask & GDK_KEY_PRESS_MASK)
 709     XISetMask (mask, XI_KeyPress);
 710
 711   if (event_mask & GDK_KEY_RELEASE_MASK)
 712     XISetMask (mask, XI_KeyRelease);
 713
 714   if (event_mask & GDK_ENTER_NOTIFY_MASK)
 715     XISetMask (mask, XI_Enter);
 716
 717   if (event_mask & GDK_LEAVE_NOTIFY_MASK)
 718     XISetMask (mask, XI_Leave);
 719
 720   if (event_mask & GDK_FOCUS_CHANGE_MASK)
 721     {
 722       XISetMask (mask, XI_FocusIn);
 723       XISetMask (mask, XI_FocusOut);
 724     }
 725
 726 #ifdef XINPUT_2_2
 727   /* XInput 2.2 includes multitouch support */
 728   if (minor >= 2 &&
 729       event_mask & GDK_TOUCH_MASK)
 730     {
 731       XISetMask (mask, XI_TouchBegin);
 732       XISetMask (mask, XI_TouchUpdate);
 733       XISetMask (mask, XI_TouchEnd);
 734     }
 735 #endif /* XINPUT_2_2 */
 736
 737   return mask;
 738 }
 739
 740 guint
 741 _gdk_x11_device_xi2_translate_state (XIModifierState *mods_state,
 742                                      XIButtonState   *buttons_state,
 743                                      XIGroupState    *group_state)
 744 {
 745   guint state = 0;
 746
 747   if (mods_state)
 748     state = mods_state->effective;
 749
 750   if (buttons_state)
 751     {
 752       gint len, i;
 753
 754       /* We're only interested in the first 5 buttons */
 755       len = MIN (5, buttons_state->mask_len * 8);
 756
 757       for (i = 0; i < len; i++)
 758         {
 759           if (!XIMaskIsSet (buttons_state->mask, i))
 760             continue;
 761
 762           switch (i)
 763             {
 764             case 1:
 765               state |= GDK_BUTTON1_MASK;
 766               break;
 767             case 2:
 768               state |= GDK_BUTTON2_MASK;
 769               break;
 770             case 3:
 771               state |= GDK_BUTTON3_MASK;
 772               break;
 773             case 4:
 774               state |= GDK_BUTTON4_MASK;
 775               break;
 776             case 5:
 777               state |= GDK_BUTTON5_MASK;
 778               break;
 779             default:
 780               break;
 781             }
 782         }
 783     }
 784
 785   if (group_state)
 786     state |= (group_state->effective) << 13;
 787
 788   return state;
 789 }
 790
 791 void
 792 _gdk_x11_device_xi2_add_scroll_valuator (GdkX11DeviceXI2    *device,
 793                                          guint               n_valuator,
 794                                          GdkScrollDirection  direction)
 795 {
 796   ScrollValuator scroll;
 797
 798   g_return_if_fail (GDK_IS_X11_DEVICE_XI2 (device));
 799   g_return_if_fail (n_valuator < gdk_device_get_n_axes (GDK_DEVICE (device)));
 800
 801   scroll.n_valuator = n_valuator;
 802   scroll.direction = direction;
 803   scroll.last_value_valid = FALSE;
 804
 805   g_array_append_val (device->scroll_valuators, scroll);
 806 }
 807
 808 gboolean
 809 _gdk_x11_device_xi2_get_scroll_delta (GdkX11DeviceXI2    *device,
 810                                       guint               n_valuator,
 811                                       gdouble             valuator_value,
 812                                       GdkScrollDirection *direction_ret,
 813                                       gdouble            *delta_ret)
 814 {
 815   guint i;
 816
 817   g_return_val_if_fail (GDK_IS_X11_DEVICE_XI2 (device), FALSE);
 818   g_return_val_if_fail (n_valuator < gdk_device_get_n_axes (GDK_DEVICE (device)), FALSE);
 819
 820   for (i = 0; i < device->scroll_valuators->len; i++)
 821     {
 822       ScrollValuator *scroll;
 823
 824       scroll = &g_array_index (device->scroll_valuators, ScrollValuator, i);
 825
 826       if (scroll->n_valuator == n_valuator)
 827         {
 828           if (direction_ret)
 829             *direction_ret = scroll->direction;
 830
 831           if (delta_ret)
 832             *delta_ret = 0;
 833
 834           if (scroll->last_value_valid)
 835             {
 836               if (delta_ret)
 837                 *delta_ret = valuator_value - scroll->last_value;
 838
 839               scroll->last_value = valuator_value;
 840             }
 841           else
 842             {
 843               scroll->last_value = valuator_value;
 844               scroll->last_value_valid = TRUE;
 845             }
 846
 847           return TRUE;
 848         }
 849     }
 850
 851   return FALSE;
 852 }
 853
 854 void
 855 _gdk_device_xi2_reset_scroll_valuators (GdkX11DeviceXI2 *device)
 856 {
 857   guint i;
 858
 859   for (i = 0; i < device->scroll_valuators->len; i++)
 860     {
 861       ScrollValuator *scroll;
 862
 863       scroll = &g_array_index (device->scroll_valuators, ScrollValuator, i);
 864       scroll->last_value_valid = FALSE;
 865     }
 866 }
 867
 868 gint
 869 _gdk_x11_device_xi2_get_id (GdkX11DeviceXI2 *device)
 870 {
 871   g_return_val_if_fail (GDK_IS_X11_DEVICE_XI2 (device), 0);
 872
 873   return device->device_id;
 874 }