Pileus Git - ~andy/gtk/blob - gdk/broadway/gdkdevice-broadway.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 "gdkdevice-broadway.h"
  23
  24 #include "gdkwindow.h"
  25 #include "gdkprivate-broadway.h"
  26 #include "gdkx.h"
  27
  28 static gboolean gdk_device_core_get_history (GdkDevice      *device,
  29                                              GdkWindow      *window,
  30                                              guint32         start,
  31                                              guint32         stop,
  32                                              GdkTimeCoord ***events,
  33                                              gint           *n_events);
  34 static void gdk_device_core_get_state (GdkDevice       *device,
  35                                        GdkWindow       *window,
  36                                        gdouble         *axes,
  37                                        GdkModifierType *mask);
  38 static void gdk_device_core_set_window_cursor (GdkDevice *device,
  39                                                GdkWindow *window,
  40                                                GdkCursor *cursor);
  41 static void gdk_device_core_warp (GdkDevice *device,
  42                                   GdkScreen *screen,
  43                                   gint       x,
  44                                   gint       y);
  45 static gboolean gdk_device_core_query_state (GdkDevice        *device,
  46                                              GdkWindow        *window,
  47                                              GdkWindow       **root_window,
  48                                              GdkWindow       **child_window,
  49                                              gint             *root_x,
  50                                              gint             *root_y,
  51                                              gint             *win_x,
  52                                              gint             *win_y,
  53                                              GdkModifierType  *mask);
  54 static GdkGrabStatus gdk_device_core_grab   (GdkDevice     *device,
  55                                              GdkWindow     *window,
  56                                              gboolean       owner_events,
  57                                              GdkEventMask   event_mask,
  58                                              GdkWindow     *confine_to,
  59                                              GdkCursor     *cursor,
  60                                              guint32        time_);
  61 static void          gdk_device_core_ungrab (GdkDevice     *device,
  62                                              guint32        time_);
  63 static GdkWindow * gdk_device_core_window_at_position (GdkDevice       *device,
  64                                                        gint            *win_x,
  65                                                        gint            *win_y,
  66                                                        GdkModifierType *mask,
  67                                                        gboolean         get_toplevel);
  68 static void      gdk_device_core_select_window_events (GdkDevice       *device,
  69                                                        GdkWindow       *window,
  70                                                        GdkEventMask     event_mask);
  71
  72
  73 G_DEFINE_TYPE (GdkDeviceCore, gdk_device_core, GDK_TYPE_DEVICE)
  74
  75 static void
  76 gdk_device_core_class_init (GdkDeviceCoreClass *klass)
  77 {
  78   GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
  79
  80   device_class->get_history = gdk_device_core_get_history;
  81   device_class->get_state = gdk_device_core_get_state;
  82   device_class->set_window_cursor = gdk_device_core_set_window_cursor;
  83   device_class->warp = gdk_device_core_warp;
  84   device_class->query_state = gdk_device_core_query_state;
  85   device_class->grab = gdk_device_core_grab;
  86   device_class->ungrab = gdk_device_core_ungrab;
  87   device_class->window_at_position = gdk_device_core_window_at_position;
  88   device_class->select_window_events = gdk_device_core_select_window_events;
  89 }
  90
  91 static void
  92 gdk_device_core_init (GdkDeviceCore *device_core)
  93 {
  94   GdkDevice *device;
  95
  96   device = GDK_DEVICE (device_core);
  97
  98   _gdk_device_add_axis (device, GDK_NONE, GDK_AXIS_X, 0, 0, 1);
  99   _gdk_device_add_axis (device, GDK_NONE, GDK_AXIS_Y, 0, 0, 1);
 100 }
 101
 102 static gboolean
 103 impl_coord_in_window (GdkWindow *window,
 104                       int        impl_x,
 105                       int        impl_y)
 106 {
 107   GdkWindowObject *priv = (GdkWindowObject *) window;
 108
 109   if (impl_x < priv->abs_x ||
 110       impl_x > priv->abs_x + priv->width)
 111     return FALSE;
 112
 113   if (impl_y < priv->abs_y ||
 114       impl_y > priv->abs_y + priv->height)
 115     return FALSE;
 116
 117   return TRUE;
 118 }
 119
 120 static gboolean
 121 gdk_device_core_get_history (GdkDevice      *device,
 122                              GdkWindow      *window,
 123                              guint32         start,
 124                              guint32         stop,
 125                              GdkTimeCoord ***events,
 126                              gint           *n_events)
 127 {
 128   GdkWindowObject *priv;
 129   XTimeCoord *xcoords;
 130   GdkTimeCoord **coords;
 131   GdkWindow *impl_window;
 132   int tmp_n_events;
 133   int i, j;
 134
 135   impl_window = _gdk_window_get_impl_window (window);
 136   xcoords = XGetMotionEvents (GDK_DRAWABLE_XDISPLAY (window),
 137                               GDK_DRAWABLE_XID (impl_window),
 138                               start, stop, &tmp_n_events);
 139   if (!xcoords)
 140     return FALSE;
 141
 142   priv = (GdkWindowObject *) window;
 143   coords = _gdk_device_allocate_history (device, tmp_n_events);
 144
 145   for (i = 0, j = 0; i < tmp_n_events; i++)
 146     {
 147       if (impl_coord_in_window (window, xcoords[i].x, xcoords[i].y))
 148         {
 149           coords[j]->time = xcoords[i].time;
 150           coords[j]->axes[0] = xcoords[i].x - priv->abs_x;
 151           coords[j]->axes[1] = xcoords[i].y - priv->abs_y;
 152           j++;
 153         }
 154     }
 155
 156   XFree (xcoords);
 157
 158   /* free the events we allocated too much */
 159   for (i = j; i < tmp_n_events; i++)
 160     {
 161       g_free (coords[i]);
 162       coords[i] = NULL;
 163     }
 164
 165   tmp_n_events = j;
 166
 167   if (tmp_n_events == 0)
 168     {
 169       gdk_device_free_history (coords, tmp_n_events);
 170       return FALSE;
 171     }
 172
 173   if (n_events)
 174     *n_events = tmp_n_events;
 175
 176   if (events)
 177     *events = coords;
 178   else if (coords)
 179     gdk_device_free_history (coords, tmp_n_events);
 180
 181   return TRUE;
 182 }
 183
 184 static void
 185 gdk_device_core_get_state (GdkDevice       *device,
 186                            GdkWindow       *window,
 187                            gdouble         *axes,
 188                            GdkModifierType *mask)
 189 {
 190   gint x_int, y_int;
 191
 192   gdk_window_get_pointer (window, &x_int, &y_int, mask);
 193
 194   if (axes)
 195     {
 196       axes[0] = x_int;
 197       axes[1] = y_int;
 198     }
 199 }
 200
 201 static void
 202 gdk_device_core_set_window_cursor (GdkDevice *device,
 203                                    GdkWindow *window,
 204                                    GdkCursor *cursor)
 205 {
 206   GdkCursorPrivate *cursor_private;
 207   Cursor xcursor;
 208
 209   cursor_private = (GdkCursorPrivate*) cursor;
 210
 211   if (!cursor)
 212     xcursor = None;
 213   else
 214     xcursor = cursor_private->xcursor;
 215
 216   XDefineCursor (GDK_WINDOW_XDISPLAY (window),
 217                  GDK_WINDOW_XID (window),
 218                  xcursor);
 219 }
 220
 221 static void
 222 gdk_device_core_warp (GdkDevice *device,
 223                       GdkScreen *screen,
 224                       gint       x,
 225                       gint       y)
 226 {
 227   Display *xdisplay;
 228   Window dest;
 229
 230   xdisplay = GDK_DISPLAY_XDISPLAY (gdk_device_get_display (device));
 231   dest = GDK_WINDOW_XWINDOW (gdk_screen_get_root_window (screen));
 232
 233   XWarpPointer (xdisplay, None, dest, 0, 0, 0, 0, x, y);
 234 }
 235
 236 static gboolean
 237 gdk_device_core_query_state (GdkDevice        *device,
 238                              GdkWindow        *window,
 239                              GdkWindow       **root_window,
 240                              GdkWindow       **child_window,
 241                              gint             *root_x,
 242                              gint             *root_y,
 243                              gint             *win_x,
 244                              gint             *win_y,
 245                              GdkModifierType  *mask)
 246 {
 247   GdkDisplay *display;
 248   Window xroot_window, xchild_window;
 249   int xroot_x, xroot_y, xwin_x, xwin_y;
 250   unsigned int xmask;
 251
 252   display = gdk_window_get_display (window);
 253
 254   if (!XQueryPointer (GDK_WINDOW_XDISPLAY (window),
 255                       GDK_WINDOW_XID (window),
 256                       &xroot_window,
 257                       &xchild_window,
 258                       &xroot_x,
 259                       &xroot_y,
 260                       &xwin_x,
 261                       &xwin_y,
 262                       &xmask))
 263     {
 264       return FALSE;
 265     }
 266
 267   if (root_window)
 268     *root_window = gdk_window_lookup_for_display (display, xroot_window);
 269
 270   if (child_window)
 271     *child_window = gdk_window_lookup_for_display (display, xchild_window);
 272
 273   if (root_x)
 274     *root_x = xroot_x;
 275
 276   if (root_y)
 277     *root_y = xroot_y;
 278
 279   if (win_x)
 280     *win_x = xwin_x;
 281
 282   if (win_y)
 283     *win_y = xwin_y;
 284
 285   if (mask)
 286     *mask = xmask;
 287
 288   return TRUE;
 289 }
 290
 291 static GdkGrabStatus
 292 gdk_device_core_grab (GdkDevice    *device,
 293                       GdkWindow    *window,
 294                       gboolean      owner_events,
 295                       GdkEventMask  event_mask,
 296                       GdkWindow    *confine_to,
 297                       GdkCursor    *cursor,
 298                       guint32       time_)
 299 {
 300   GdkDisplay *display;
 301   Window xwindow, xconfine_to;
 302   int status;
 303
 304   display = gdk_device_get_display (device);
 305
 306   xwindow = GDK_WINDOW_XID (window);
 307
 308   if (confine_to)
 309     confine_to = _gdk_window_get_impl_window (confine_to);
 310
 311   if (!confine_to || GDK_WINDOW_DESTROYED (confine_to))
 312     xconfine_to = None;
 313   else
 314     xconfine_to = GDK_WINDOW_XID (confine_to);
 315
 316   if (device->source == GDK_SOURCE_KEYBOARD)
 317     {
 318       /* Device is a keyboard */
 319       status = XGrabKeyboard (GDK_DISPLAY_XDISPLAY (display),
 320                               xwindow,
 321                               owner_events,
 322                               GrabModeAsync, GrabModeAsync,
 323                               time_);
 324     }
 325   else
 326     {
 327       Cursor xcursor;
 328       guint xevent_mask;
 329       gint i;
 330
 331       /* Device is a pointer */
 332       if (!cursor)
 333         xcursor = None;
 334       else
 335         {
 336           _gdk_x11_cursor_update_theme (cursor);
 337           xcursor = ((GdkCursorPrivate *) cursor)->xcursor;
 338         }
 339
 340       xevent_mask = 0;
 341
 342       for (i = 0; i < _gdk_nenvent_masks; i++)
 343         {
 344           if (event_mask & (1 << (i + 1)))
 345             xevent_mask |= _gdk_event_mask_table[i];
 346         }
 347
 348       /* We don't want to set a native motion hint mask, as we're emulating motion
 349        * hints. If we set a native one we just wouldn't get any events.
 350        */
 351       xevent_mask &= ~PointerMotionHintMask;
 352
 353       status = XGrabPointer (GDK_DISPLAY_XDISPLAY (display),
 354                              xwindow,
 355                              owner_events,
 356                              xevent_mask,
 357                              GrabModeAsync, GrabModeAsync,
 358                              xconfine_to,
 359                              xcursor,
 360                              time_);
 361     }
 362
 363   return _gdk_x11_convert_grab_status (status);
 364 }
 365
 366 static void
 367 gdk_device_core_ungrab (GdkDevice *device,
 368                         guint32    time_)
 369 {
 370   GdkDisplay *display;
 371
 372   display = gdk_device_get_display (device);
 373
 374   if (device->source == GDK_SOURCE_KEYBOARD)
 375     XUngrabKeyboard (GDK_DISPLAY_XDISPLAY (display), time_);
 376   else
 377     XUngrabPointer (GDK_DISPLAY_XDISPLAY (display), time_);
 378 }
 379
 380 static GdkWindow *
 381 gdk_device_core_window_at_position (GdkDevice       *device,
 382                                     gint            *win_x,
 383                                     gint            *win_y,
 384                                     GdkModifierType *mask,
 385                                     gboolean         get_toplevel)
 386 {
 387   GdkDisplay *display;
 388   GdkScreen *screen;
 389   Display *xdisplay;
 390   GdkWindow *window;
 391   Window xwindow, root, child, last;
 392   int xroot_x, xroot_y, xwin_x, xwin_y;
 393   unsigned int xmask;
 394
 395   last = None;
 396   display = gdk_device_get_display (device);
 397   screen = gdk_display_get_default_screen (display);
 398
 399   /* This function really only works if the mouse pointer is held still
 400    * during its operation. If it moves from one leaf window to another
 401    * than we'll end up with inaccurate values for win_x, win_y
 402    * and the result.
 403    */
 404   gdk_x11_display_grab (display);
 405
 406   xdisplay = GDK_SCREEN_XDISPLAY (screen);
 407   xwindow = GDK_SCREEN_XROOTWIN (screen);
 408
 409   XQueryPointer (xdisplay, xwindow,
 410                  &root, &child,
 411                  &xroot_x, &xroot_y,
 412                  &xwin_x, &xwin_y,
 413                  &xmask);
 414
 415   if (root == xwindow)
 416     xwindow = child;
 417   else
 418     xwindow = root;
 419
 420   while (xwindow)
 421     {
 422       last = xwindow;
 423       XQueryPointer (xdisplay, xwindow,
 424                      &root, &xwindow,
 425                      &xroot_x, &xroot_y,
 426                      &xwin_x, &xwin_y,
 427                      &xmask);
 428
 429       if (get_toplevel && last != root &&
 430           (window = gdk_window_lookup_for_display (display, last)) != NULL &&
 431           GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
 432         {
 433           xwindow = last;
 434           break;
 435         }
 436     }
 437
 438   gdk_x11_display_ungrab (display);
 439
 440   window = gdk_window_lookup_for_display (display, last);
 441
 442   if (win_x)
 443     *win_x = (window) ? xwin_x : -1;
 444
 445   if (win_y)
 446     *win_y = (window) ? xwin_y : -1;
 447
 448   if (mask)
 449     *mask = xmask;
 450
 451   return window;
 452 }
 453
 454 static void
 455 gdk_device_core_select_window_events (GdkDevice    *device,
 456                                       GdkWindow    *window,
 457                                       GdkEventMask  event_mask)
 458 {
 459   GdkEventMask filter_mask, window_mask;
 460   guint xmask = 0;
 461   gint i;
 462
 463   window_mask = gdk_window_get_events (window);
 464   filter_mask = (GDK_POINTER_MOTION_MASK &
 465                  GDK_POINTER_MOTION_HINT_MASK &
 466                  GDK_BUTTON_MOTION_MASK &
 467                  GDK_BUTTON1_MOTION_MASK &
 468                  GDK_BUTTON2_MOTION_MASK &
 469                  GDK_BUTTON3_MOTION_MASK &
 470                  GDK_BUTTON_PRESS_MASK &
 471                  GDK_BUTTON_RELEASE_MASK &
 472                  GDK_KEY_PRESS_MASK &
 473                  GDK_KEY_RELEASE_MASK &
 474                  GDK_ENTER_NOTIFY_MASK &
 475                  GDK_LEAVE_NOTIFY_MASK &
 476                  GDK_FOCUS_CHANGE_MASK &
 477                  GDK_PROXIMITY_IN_MASK &
 478                  GDK_PROXIMITY_OUT_MASK &
 479                  GDK_SCROLL_MASK);
 480
 481   /* Filter out non-device events */
 482   event_mask &= filter_mask;
 483
 484   /* Unset device events on window mask */
 485   window_mask &= ~(filter_mask);
 486
 487   /* Combine masks */
 488   event_mask |= window_mask;
 489
 490   for (i = 0; i < _gdk_nenvent_masks; i++)
 491     {
 492       if (event_mask & (1 << (i + 1)))
 493         xmask |= _gdk_event_mask_table[i];
 494     }
 495
 496   if (GDK_WINDOW_XID (window) != GDK_WINDOW_XROOTWIN (window))
 497     xmask |= StructureNotifyMask | PropertyChangeMask;
 498
 499   XSelectInput (GDK_WINDOW_XDISPLAY (window),
 500                 GDK_WINDOW_XWINDOW (window),
 501                 xmask);
 502 }