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 #if 0
  31 #ifdef XINPUT_2
  32
  33 /* Hack to have keyboard events interpreted
  34  * regardless of the default device manager
  35  */
  36 #define GDK_COMPILATION
  37 #include "x11/gdkdevicemanager-core.h"
  38 #include "x11/gdkdevicemanager-xi2.h"
  39 #include "x11/gdkeventtranslator.h"
  40 #undef GDK_COMPILATION
  41
  42 #endif /* XINPUT_2 */
  43 #endif
  44
  45 #include "gtkmain.h"
  46 #include "gtkmarshalers.h"
  47 #include "gtkplug.h"
  48 #include "gtkprivate.h"
  49 #include "gtkplugprivate.h"
  50 #include "gtkwindowprivate.h"
  51 #include "gtkdebug.h"
  52
  53 #include "x11/gdkx.h"
  54
  55 #include "gtkxembed.h"
  56
  57 static void xembed_set_info            (GdkWindow     *window,
  58                                         unsigned long  flags);
  59
  60 GdkNativeWindow
  61 _gtk_plug_windowing_get_id (GtkPlug *plug)
  62 {
  63   return GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (plug)));
  64 }
  65
  66 void
  67 _gtk_plug_windowing_realize_toplevel (GtkPlug *plug)
  68 {
  69   xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), 0);
  70 }
  71
  72 void
  73 _gtk_plug_windowing_map_toplevel (GtkPlug *plug)
  74 {
  75   xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), XEMBED_MAPPED);
  76 }
  77
  78 void
  79 _gtk_plug_windowing_unmap_toplevel (GtkPlug *plug)
  80 {
  81   xembed_set_info (gtk_widget_get_window (GTK_WIDGET (plug)), 0);
  82 }
  83
  84 void
  85 _gtk_plug_windowing_set_focus (GtkPlug *plug)
  86 {
  87   GtkPlugPrivate *priv = plug->priv;
  88
  89   _gtk_xembed_send_message (priv->socket_window,
  90                             XEMBED_REQUEST_FOCUS, 0, 0, 0);
  91 }
  92
  93 void
  94 _gtk_plug_windowing_add_grabbed_key (GtkPlug        *plug,
  95                                      guint           accelerator_key,
  96                                      GdkModifierType accelerator_mods)
  97 {
  98   GtkPlugPrivate *priv = plug->priv;
  99
 100   _gtk_xembed_send_message (priv->socket_window, XEMBED_GTK_GRAB_KEY, 0,
 101                             accelerator_key, accelerator_mods);
 102 }
 103
 104 void
 105 _gtk_plug_windowing_remove_grabbed_key (GtkPlug        *plug,
 106                                         guint           accelerator_key,
 107                                         GdkModifierType accelerator_mods)
 108 {
 109   GtkPlugPrivate *priv = plug->priv;
 110
 111   _gtk_xembed_send_message (priv->socket_window, XEMBED_GTK_UNGRAB_KEY, 0,
 112                             accelerator_key, accelerator_mods);
 113 }
 114
 115 void
 116 _gtk_plug_windowing_focus_to_parent (GtkPlug         *plug,
 117                                      GtkDirectionType direction)
 118 {
 119   GtkPlugPrivate *priv = plug->priv;
 120   XEmbedMessageType message = XEMBED_FOCUS_PREV; /* Quiet GCC */
 121
 122   switch (direction)
 123     {
 124     case GTK_DIR_UP:
 125     case GTK_DIR_LEFT:
 126     case GTK_DIR_TAB_BACKWARD:
 127       message = XEMBED_FOCUS_PREV;
 128       break;
 129     case GTK_DIR_DOWN:
 130     case GTK_DIR_RIGHT:
 131     case GTK_DIR_TAB_FORWARD:
 132       message = XEMBED_FOCUS_NEXT;
 133       break;
 134     }
 135
 136   _gtk_xembed_send_focus_message (priv->socket_window, message, 0);
 137 }
 138
 139 static void
 140 xembed_set_info (GdkWindow     *window,
 141                  unsigned long  flags)
 142 {
 143   GdkDisplay *display = gdk_window_get_display (window);
 144   unsigned long buffer[2];
 145
 146   Atom xembed_info_atom = gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED_INFO");
 147
 148   buffer[0] = GTK_XEMBED_PROTOCOL_VERSION;
 149   buffer[1] = flags;
 150
 151   XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
 152                    GDK_WINDOW_XID (window),
 153                    xembed_info_atom, xembed_info_atom, 32,
 154                    PropModeReplace,
 155                    (unsigned char *)buffer, 2);
 156 }
 157
 158 static void
 159 handle_xembed_message (GtkPlug           *plug,
 160                        XEmbedMessageType  message,
 161                        glong              detail,
 162                        glong              data1,
 163                        glong              data2,
 164                        guint32            time)
 165 {
 166   GtkWindow *window = GTK_WINDOW (plug);
 167
 168   GTK_NOTE (PLUGSOCKET,
 169             g_message ("GtkPlug: %s received", _gtk_xembed_message_name (message)));
 170
 171   switch (message)
 172     {
 173     case XEMBED_EMBEDDED_NOTIFY:
 174       break;
 175     case XEMBED_WINDOW_ACTIVATE:
 176       _gtk_window_set_is_active (window, TRUE);
 177       break;
 178     case XEMBED_WINDOW_DEACTIVATE:
 179       _gtk_window_set_is_active (window, FALSE);
 180       break;
 181
 182     case XEMBED_MODALITY_ON:
 183       _gtk_plug_handle_modality_on (plug);
 184       break;
 185     case XEMBED_MODALITY_OFF:
 186       _gtk_plug_handle_modality_off (plug);
 187       break;
 188
 189     case XEMBED_FOCUS_IN:
 190       _gtk_window_set_has_toplevel_focus (window, TRUE);
 191       switch (detail)
 192         {
 193         case XEMBED_FOCUS_FIRST:
 194           _gtk_plug_focus_first_last (plug, GTK_DIR_TAB_FORWARD);
 195           break;
 196         case XEMBED_FOCUS_LAST:
 197           _gtk_plug_focus_first_last (plug, GTK_DIR_TAB_BACKWARD);
 198           break;
 199         case XEMBED_FOCUS_CURRENT:
 200           break;
 201         }
 202       break;
 203
 204     case XEMBED_FOCUS_OUT:
 205       _gtk_window_set_has_toplevel_focus (window, FALSE);
 206       break;
 207
 208     case XEMBED_GRAB_KEY:
 209     case XEMBED_UNGRAB_KEY:
 210     case XEMBED_GTK_GRAB_KEY:
 211     case XEMBED_GTK_UNGRAB_KEY:
 212     case XEMBED_REQUEST_FOCUS:
 213     case XEMBED_FOCUS_NEXT:
 214     case XEMBED_FOCUS_PREV:
 215       g_warning ("GtkPlug: Invalid _XEMBED message %s received", _gtk_xembed_message_name (message));
 216       break;
 217
 218     default:
 219       GTK_NOTE(PLUGSOCKET,
 220                g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %d", message));
 221       break;
 222     }
 223 }
 224
 225 GdkFilterReturn
 226 _gtk_plug_windowing_filter_func (GdkXEvent *gdk_xevent,
 227                                  GdkEvent  *event,
 228                                  gpointer   data)
 229 {
 230   GdkScreen *screen = gdk_window_get_screen (event->any.window);
 231   GdkDisplay *display = gdk_screen_get_display (screen);
 232   GtkPlug *plug = GTK_PLUG (data);
 233   GtkPlugPrivate *priv = plug->priv;
 234   XEvent *xevent = (XEvent *)gdk_xevent;
 235
 236   GdkFilterReturn return_val;
 237
 238   return_val = GDK_FILTER_CONTINUE;
 239
 240   switch (xevent->type)
 241     {
 242     case ClientMessage:
 243       if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED"))
 244         {
 245           _gtk_xembed_push_message (xevent);
 246           handle_xembed_message (plug,
 247                                  xevent->xclient.data.l[1],
 248                                  xevent->xclient.data.l[2],
 249                                  xevent->xclient.data.l[3],
 250                                  xevent->xclient.data.l[4],
 251                                  xevent->xclient.data.l[0]);
 252           _gtk_xembed_pop_message ();
 253
 254           return_val = GDK_FILTER_REMOVE;
 255         }
 256       else if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
 257         {
 258           /* We filter these out because we take being reparented back to the
 259            * root window as the reliable end of the embedding protocol
 260            */
 261
 262           return_val = GDK_FILTER_REMOVE;
 263         }
 264       break;
 265     case ReparentNotify:
 266       {
 267         XReparentEvent *xre = &xevent->xreparent;
 268         gboolean was_embedded = priv->socket_window != NULL;
 269
 270         GTK_NOTE (PLUGSOCKET, g_message("GtkPlug: ReparentNotify received"));
 271
 272         return_val = GDK_FILTER_REMOVE;
 273
 274         g_object_ref (plug);
 275
 276         if (was_embedded)
 277           {
 278             /* End of embedding protocol for previous socket */
 279
 280             GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: end of embedding"));
 281             /* FIXME: race if we remove from another socket and
 282              * then add to a local window before we get notification
 283              * Probably need check in _gtk_plug_add_to_socket
 284              */
 285
 286             if (xre->parent != GDK_WINDOW_XID (priv->socket_window))
 287               {
 288                 GtkWidget *widget = GTK_WIDGET (plug);
 289
 290                 gdk_window_set_user_data (priv->socket_window, NULL);
 291                 g_object_unref (priv->socket_window);
 292                 priv->socket_window = NULL;
 293
 294                 /* Emit a delete window, as if the user attempted
 295                  * to close the toplevel. Simple as to how we
 296                  * handle WM_DELETE_WINDOW, if it isn't handled
 297                  * we destroy the widget. BUt only do this if
 298                  * we are being reparented to the root window.
 299                  * Moving from one embedder to another should
 300                  * be invisible to the app.
 301                  */
 302
 303                 if (xre->parent == GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
 304                   {
 305                     GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: calling gtk_plug_send_delete_event()"));
 306                     _gtk_plug_send_delete_event (widget);
 307
 308                     g_object_notify (G_OBJECT (plug), "embedded");
 309                   }
 310               }
 311             else
 312               goto done;
 313           }
 314
 315         if (xre->parent != GDK_WINDOW_XID (gdk_screen_get_root_window (screen)))
 316           {
 317             /* Start of embedding protocol */
 318
 319             GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: start of embedding"));
 320
 321             priv->socket_window = gdk_x11_window_lookup_for_display (display, xre->parent);
 322             if (priv->socket_window)
 323               {
 324                 gpointer user_data = NULL;
 325                 gdk_window_get_user_data (priv->socket_window, &user_data);
 326
 327                 if (user_data)
 328                   {
 329                     g_warning (G_STRLOC "Plug reparented unexpectedly into window in the same process");
 330                     priv->socket_window = NULL;
 331                     break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
 332                   }
 333
 334                 g_object_ref (priv->socket_window);
 335               }
 336             else
 337               {
 338                 priv->socket_window = gdk_x11_window_foreign_new_for_display (display, xre->parent);
 339                 if (!priv->socket_window) /* Already gone */
 340                   break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
 341               }
 342
 343             _gtk_plug_add_all_grabbed_keys (plug);
 344
 345             if (!was_embedded)
 346               g_signal_emit_by_name (plug, "embedded");
 347
 348             g_object_notify (G_OBJECT (plug), "embedded");
 349           }
 350
 351       done:
 352         g_object_unref (plug);
 353
 354         break;
 355       }
 356
 357 #if 0
 358  /* FIXME: this needs some X11 backend api to do things
 359   * in a saner way
 360   */
 361     case KeyPress:
 362     case KeyRelease:
 363       {
 364         static GdkDeviceManager *core_device_manager = NULL;
 365         GdkDeviceManager *device_manager;
 366         GdkEvent *translated_event;
 367         GList *devices, *d;
 368         GdkDevice *keyboard = NULL;
 369
 370         device_manager = gdk_display_get_device_manager (display);
 371
 372         /* bail out if the device manager already
 373          * interprets core keyboard events.
 374          */
 375         if (!GDK_IS_DEVICE_MANAGER_XI2 (device_manager))
 376           return GDK_FILTER_CONTINUE;
 377
 378         /* Find out the first keyboard device, the
 379          * generated event will be assigned to it.
 380          */
 381         devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
 382
 383         for (d = devices; d; d = d->next)
 384           {
 385             GdkDevice *device = d->data;
 386
 387             if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
 388               keyboard = device;
 389           }
 390
 391         g_list_free (devices);
 392
 393         if (!keyboard)
 394           return GDK_FILTER_CONTINUE;
 395
 396         /* This is a crude hack so key events
 397          * are interpreted as if there was a
 398          * GdkDeviceManagerCore available.
 399          */
 400         if (G_UNLIKELY (!core_device_manager))
 401           core_device_manager = g_object_new (GDK_TYPE_DEVICE_MANAGER_CORE,
 402                                               "display", display,
 403                                               NULL);
 404
 405         translated_event = gdk_event_translator_translate (GDK_EVENT_TRANSLATOR (core_device_manager), display, xevent);
 406         gdk_event_set_device (translated_event, keyboard);
 407
 408         gtk_main_do_event (translated_event);
 409         gdk_event_free (translated_event);
 410
 411         return_val = GDK_FILTER_REMOVE;
 412       }
 413 #endif
 414     }
 415
 416   return return_val;
 417 }