Pileus Git - ~andy/gtk/blob - gtk/gtkplug-x11.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   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 Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 /* By Owen Taylor <otaylor@gtk.org>              98/4/4 */
  20
  21 /*
  22  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  23  * file for a list of people on the GTK+ Team.  See the ChangeLog
  24  * files for a list of changes.  These files are distributed with
  25  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  26  */
  27
  28 #include "config.h"
  29
  30 #ifdef XINPUT_2
  31
  32 /* Hack to have keyboard events interpreted
  33  * regardless of the default device manager
  34  */
  35 #define GDK_COMPILATION
  36 #include "x11/gdkdevicemanager-core.h"
  37 #include "x11/gdkdevicemanager-xi2.h"
  38 #include "x11/gdkeventtranslator.h"
  39 #undef GDK_COMPILATION
  40
  41 #endif /* XINPUT_2 */
  42
  43 #include "gtkmain.h"
  44 #include "gtkmarshalers.h"
  45 #include "gtkplug.h"
  46 #include "gtkprivate.h"
  47 #include "gtkplugprivate.h"
  48 #include "gtkwindowprivate.h"
  49 #include "gtkdebug.h"
  50
  51 #include "x11/gdkx.h"
  52
  53 #include "gtkxembed.h"
  54
  55 static void xembed_set_info            (GdkWindow     *window,
  56                                         unsigned long  flags);
  57
  58 GdkNativeWindow
  59 _gtk_plug_windowing_get_id (GtkPlug *plug)
  60 {
  61   return GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (plug)));
  62 }
  63
  64 void
  65 _gtk_plug_windowing_realize_toplevel (GtkPlug *plug)
  66 {
  67   xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), 0);
  68 }
  69
  70 void
  71 _gtk_plug_windowing_map_toplevel (GtkPlug *plug)
  72 {
  73   xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), XEMBED_MAPPED);
  74 }
  75
  76 void
  77 _gtk_plug_windowing_unmap_toplevel (GtkPlug *plug)
  78 {
  79   xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), 0);
  80 }
  81
  82 void
  83 _gtk_plug_windowing_set_focus (GtkPlug *plug)
  84 {
  85   GtkPlugPrivate *priv = plug->priv;
  86
  87   _gtk_xembed_send_message (priv->socket_window,
  88                             XEMBED_REQUEST_FOCUS, 0, 0, 0);
  89 }
  90
  91 void
  92 _gtk_plug_windowing_add_grabbed_key (GtkPlug        *plug,
  93                                      guint           accelerator_key,
  94                                      GdkModifierType accelerator_mods)
  95 {
  96   GtkPlugPrivate *priv = plug->priv;
  97
  98   _gtk_xembed_send_message (priv->socket_window, XEMBED_GTK_GRAB_KEY, 0,
  99                             accelerator_key, accelerator_mods);
 100 }
 101
 102 void
 103 _gtk_plug_windowing_remove_grabbed_key (GtkPlug        *plug,
 104                                         guint           accelerator_key,
 105                                         GdkModifierType accelerator_mods)
 106 {
 107   GtkPlugPrivate *priv = plug->priv;
 108
 109   _gtk_xembed_send_message (priv->socket_window, XEMBED_GTK_UNGRAB_KEY, 0,
 110                             accelerator_key, accelerator_mods);
 111 }
 112
 113 void
 114 _gtk_plug_windowing_focus_to_parent (GtkPlug         *plug,
 115                                      GtkDirectionType direction)
 116 {
 117   GtkPlugPrivate *priv = plug->priv;
 118   XEmbedMessageType message = XEMBED_FOCUS_PREV; /* Quiet GCC */
 119
 120   switch (direction)
 121     {
 122     case GTK_DIR_UP:
 123     case GTK_DIR_LEFT:
 124     case GTK_DIR_TAB_BACKWARD:
 125       message = XEMBED_FOCUS_PREV;
 126       break;
 127     case GTK_DIR_DOWN:
 128     case GTK_DIR_RIGHT:
 129     case GTK_DIR_TAB_FORWARD:
 130       message = XEMBED_FOCUS_NEXT;
 131       break;
 132     }
 133
 134   _gtk_xembed_send_focus_message (priv->socket_window, message, 0);
 135 }
 136
 137 static void
 138 xembed_set_info (GdkWindow     *window,
 139                  unsigned long  flags)
 140 {
 141   GdkDisplay *display = gdk_window_get_display (window);
 142   unsigned long buffer[2];
 143
 144   Atom xembed_info_atom = gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED_INFO");
 145
 146   buffer[0] = GTK_XEMBED_PROTOCOL_VERSION;
 147   buffer[1] = flags;
 148
 149   XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
 150                    GDK_WINDOW_XID (window),
 151                    xembed_info_atom, xembed_info_atom, 32,
 152                    PropModeReplace,
 153                    (unsigned char *)buffer, 2);
 154 }
 155
 156 static void
 157 handle_xembed_message (GtkPlug           *plug,
 158                        XEmbedMessageType  message,
 159                        glong              detail,
 160                        glong              data1,
 161                        glong              data2,
 162                        guint32            time)
 163 {
 164   GtkWindow *window = GTK_WINDOW (plug);
 165
 166   GTK_NOTE (PLUGSOCKET,
 167             g_message ("GtkPlug: %s received", _gtk_xembed_message_name (message)));
 168
 169   switch (message)
 170     {
 171     case XEMBED_EMBEDDED_NOTIFY:
 172       break;
 173     case XEMBED_WINDOW_ACTIVATE:
 174       _gtk_window_set_is_active (window, TRUE);
 175       break;
 176     case XEMBED_WINDOW_DEACTIVATE:
 177       _gtk_window_set_is_active (window, FALSE);
 178       break;
 179
 180     case XEMBED_MODALITY_ON:
 181       _gtk_plug_handle_modality_on (plug);
 182       break;
 183     case XEMBED_MODALITY_OFF:
 184       _gtk_plug_handle_modality_off (plug);
 185       break;
 186
 187     case XEMBED_FOCUS_IN:
 188       _gtk_window_set_has_toplevel_focus (window, TRUE);
 189       switch (detail)
 190         {
 191         case XEMBED_FOCUS_FIRST:
 192           _gtk_plug_focus_first_last (plug, GTK_DIR_TAB_FORWARD);
 193           break;
 194         case XEMBED_FOCUS_LAST:
 195           _gtk_plug_focus_first_last (plug, GTK_DIR_TAB_BACKWARD);
 196           break;
 197         case XEMBED_FOCUS_CURRENT:
 198           break;
 199         }
 200       break;
 201
 202     case XEMBED_FOCUS_OUT:
 203       _gtk_window_set_has_toplevel_focus (window, FALSE);
 204       break;
 205
 206     case XEMBED_GRAB_KEY:
 207     case XEMBED_UNGRAB_KEY:
 208     case XEMBED_GTK_GRAB_KEY:
 209     case XEMBED_GTK_UNGRAB_KEY:
 210     case XEMBED_REQUEST_FOCUS:
 211     case XEMBED_FOCUS_NEXT:
 212     case XEMBED_FOCUS_PREV:
 213       g_warning ("GtkPlug: Invalid _XEMBED message %s received", _gtk_xembed_message_name (message));
 214       break;
 215
 216     default:
 217       GTK_NOTE(PLUGSOCKET,
 218                g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %d", message));
 219       break;
 220     }
 221 }
 222
 223 GdkFilterReturn
 224 _gtk_plug_windowing_filter_func (GdkXEvent *gdk_xevent,
 225                                  GdkEvent  *event,
 226                                  gpointer   data)
 227 {
 228   GdkScreen *screen = gdk_window_get_screen (event->any.window);
 229   GdkDisplay *display = gdk_screen_get_display (screen);
 230   GtkPlug *plug = GTK_PLUG (data);
 231   GtkPlugPrivate *priv = plug->priv;
 232   XEvent *xevent = (XEvent *)gdk_xevent;
 233
 234   GdkFilterReturn return_val;
 235
 236   return_val = GDK_FILTER_CONTINUE;
 237
 238   switch (xevent->type)
 239     {
 240     case ClientMessage:
 241       if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED"))
 242         {
 243           _gtk_xembed_push_message (xevent);
 244           handle_xembed_message (plug,
 245                                  xevent->xclient.data.l[1],
 246                                  xevent->xclient.data.l[2],
 247                                  xevent->xclient.data.l[3],
 248                                  xevent->xclient.data.l[4],
 249                                  xevent->xclient.data.l[0]);
 250           _gtk_xembed_pop_message ();
 251
 252           return_val = GDK_FILTER_REMOVE;
 253         }
 254       else if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
 255         {
 256           /* We filter these out because we take being reparented back to the
 257            * root window as the reliable end of the embedding protocol
 258            */
 259
 260           return_val = GDK_FILTER_REMOVE;
 261         }
 262       break;
 263     case ReparentNotify:
 264       {
 265         XReparentEvent *xre = &xevent->xreparent;
 266         gboolean was_embedded = priv->socket_window != NULL;
 267
 268         GTK_NOTE (PLUGSOCKET, g_message("GtkPlug: ReparentNotify received"));
 269
 270         return_val = GDK_FILTER_REMOVE;
 271
 272         g_object_ref (plug);
 273
 274         if (was_embedded)
 275           {
 276             /* End of embedding protocol for previous socket */
 277
 278             GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: end of embedding"));
 279             /* FIXME: race if we remove from another socket and
 280              * then add to a local window before we get notification
 281              * Probably need check in _gtk_plug_add_to_socket
 282              */
 283
 284             if (xre->parent != GDK_WINDOW_XID (priv->socket_window))
 285               {
 286                 GtkWidget *widget = GTK_WIDGET (plug);
 287
 288                 gdk_window_set_user_data (priv->socket_window, NULL);
 289                 g_object_unref (priv->socket_window);
 290                 priv->socket_window = NULL;
 291
 292                 /* Emit a delete window, as if the user attempted
 293                  * to close the toplevel. Simple as to how we
 294                  * handle WM_DELETE_WINDOW, if it isn't handled
 295                  * we destroy the widget. BUt only do this if
 296                  * we are being reparented to the root window.
 297                  * Moving from one embedder to another should
 298                  * be invisible to the app.
 299                  */
 300
 301                 if (xre->parent == GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
 302                   {
 303                     GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: calling gtk_plug_send_delete_event()"));
 304                     _gtk_plug_send_delete_event (widget);
 305
 306                     g_object_notify (G_OBJECT (plug), "embedded");
 307                   }
 308               }
 309             else
 310               goto done;
 311           }
 312
 313         if (xre->parent != GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
 314           {
 315             /* Start of embedding protocol */
 316
 317             GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: start of embedding"));
 318
 319             priv->socket_window = gdk_x11_window_lookup_for_display (display, xre->parent);
 320             if (priv->socket_window)
 321               {
 322                 gpointer user_data = NULL;
 323                 gdk_window_get_user_data (priv->socket_window, &user_data);
 324
 325                 if (user_data)
 326                   {
 327                     g_warning (G_STRLOC "Plug reparented unexpectedly into window in the same process");
 328                     priv->socket_window = NULL;
 329                     break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
 330                   }
 331
 332                 g_object_ref (priv->socket_window);
 333               }
 334             else
 335               {
 336                 priv->socket_window = gdk_x11_window_foreign_new_for_display (display, xre->parent);
 337                 if (!priv->socket_window) /* Already gone */
 338                   break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
 339               }
 340
 341             _gtk_plug_add_all_grabbed_keys (plug);
 342
 343             if (!was_embedded)
 344               g_signal_emit_by_name (plug, "embedded");
 345
 346             g_object_notify (G_OBJECT (plug), "embedded");
 347           }
 348
 349       done:
 350         g_object_unref (plug);
 351
 352         break;
 353       }
 354
 355 #if 0
 356  /* FIXME: this needs some X11 backend api to do things
 357   * in a saner way
 358   */
 359     case KeyPress:
 360     case KeyRelease:
 361       {
 362         static GdkDeviceManager *core_device_manager = NULL;
 363         GdkDeviceManager *device_manager;
 364         GdkEvent *translated_event;
 365         GList *devices, *d;
 366         GdkDevice *keyboard = NULL;
 367
 368         device_manager = gdk_display_get_device_manager (display);
 369
 370         /* bail out if the device manager already
 371          * interprets core keyboard events.
 372          */
 373         if (!GDK_IS_DEVICE_MANAGER_XI2 (device_manager))
 374           return GDK_FILTER_CONTINUE;
 375
 376         /* Find out the first keyboard device, the
 377          * generated event will be assigned to it.
 378          */
 379         devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
 380
 381         for (d = devices; d; d = d->next)
 382           {
 383             GdkDevice *device = d->data;
 384
 385             if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 386               keyboard = device;
 387           }
 388
 389         g_list_free (devices);
 390
 391         if (!keyboard)
 392           return GDK_FILTER_CONTINUE;
 393
 394         /* This is a crude hack so key events
 395          * are interpreted as if there was a
 396          * GdkDeviceManagerCore available.
 397          */
 398         if (G_UNLIKELY (!core_device_manager))
 399           core_device_manager = g_object_new (GDK_TYPE_DEVICE_MANAGER_CORE,
 400                                               "display", display,
 401                                               NULL);
 402
 403         translated_event = gdk_event_translator_translate (GDK_EVENT_TRANSLATOR (core_device_manager), display, xevent);
 404         gdk_event_set_device (translated_event, keyboard);
 405
 406         gtk_main_do_event (translated_event);
 407         gdk_event_free (translated_event);
 408
 409         return_val = GDK_FILTER_REMOVE;
 410       }
 411 #endif
 412     }
 413
 414   return return_val;
 415 }