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

   1 /* GTK - The GTK+ 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 "gtkmain.h"
  29 #include "gtkmarshalers.h"
  30 #include "gtkplug.h"
  31 #include "gtkprivate.h"
  32 #include "gtkplugprivate.h"
  33
  34 #include "x11/gdkx.h"
  35
  36 #include "gtkxembed.h"
  37 #include "gtkalias.h"
  38
  39 static void xembed_set_info            (GdkWindow     *window,
  40                                         unsigned long  flags);
  41
  42 GdkNativeWindow
  43 _gtk_plug_windowing_get_id (GtkPlug *plug)
  44 {
  45   return GDK_WINDOW_XWINDOW (GTK_WIDGET (plug)->window);
  46 }
  47
  48 void
  49 _gtk_plug_windowing_realize_toplevel (GtkPlug *plug)
  50 {
  51   xembed_set_info (GTK_WIDGET (plug)->window, 0);
  52 }
  53
  54 void
  55 _gtk_plug_windowing_map_toplevel (GtkPlug *plug)
  56 {
  57   xembed_set_info (GTK_WIDGET (plug)->window, XEMBED_MAPPED);
  58 }
  59
  60 void
  61 _gtk_plug_windowing_unmap_toplevel (GtkPlug *plug)
  62 {
  63   xembed_set_info (GTK_WIDGET (plug)->window, 0);
  64 }
  65
  66 void
  67 _gtk_plug_windowing_set_focus (GtkPlug *plug)
  68 {
  69   _gtk_xembed_send_message (plug->socket_window,
  70                             XEMBED_REQUEST_FOCUS, 0, 0, 0);
  71 }
  72
  73 void
  74 _gtk_plug_windowing_add_grabbed_key (GtkPlug        *plug,
  75                                      guint           accelerator_key,
  76                                      GdkModifierType accelerator_mods)
  77 {
  78   _gtk_xembed_send_message (plug->socket_window, XEMBED_GTK_GRAB_KEY, 0,
  79                             accelerator_key, accelerator_mods);
  80 }
  81
  82 void
  83 _gtk_plug_windowing_remove_grabbed_key (GtkPlug        *plug,
  84                                         guint           accelerator_key,
  85                                         GdkModifierType accelerator_mods)
  86 {
  87   _gtk_xembed_send_message (plug->socket_window, XEMBED_GTK_UNGRAB_KEY, 0,
  88                             accelerator_key, accelerator_mods);
  89 }
  90
  91 void
  92 _gtk_plug_windowing_focus_to_parent (GtkPlug         *plug,
  93                                      GtkDirectionType direction)
  94 {
  95   XEmbedMessageType message = XEMBED_FOCUS_PREV; /* Quiet GCC */
  96
  97   switch (direction)
  98     {
  99     case GTK_DIR_UP:
 100     case GTK_DIR_LEFT:
 101     case GTK_DIR_TAB_BACKWARD:
 102       message = XEMBED_FOCUS_PREV;
 103       break;
 104     case GTK_DIR_DOWN:
 105     case GTK_DIR_RIGHT:
 106     case GTK_DIR_TAB_FORWARD:
 107       message = XEMBED_FOCUS_NEXT;
 108       break;
 109     }
 110
 111   _gtk_xembed_send_focus_message (plug->socket_window, message, 0);
 112 }
 113
 114 static void
 115 xembed_set_info (GdkWindow     *window,
 116                  unsigned long  flags)
 117 {
 118   GdkDisplay *display = gdk_drawable_get_display (window);
 119   unsigned long buffer[2];
 120
 121   Atom xembed_info_atom = gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED_INFO");
 122
 123   buffer[0] = GTK_XEMBED_PROTOCOL_VERSION;
 124   buffer[1] = flags;
 125
 126   XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
 127                    GDK_WINDOW_XWINDOW (window),
 128                    xembed_info_atom, xembed_info_atom, 32,
 129                    PropModeReplace,
 130                    (unsigned char *)buffer, 2);
 131 }
 132
 133 static void
 134 handle_xembed_message (GtkPlug           *plug,
 135                        XEmbedMessageType  message,
 136                        glong              detail,
 137                        glong              data1,
 138                        glong              data2,
 139                        guint32            time)
 140 {
 141   GtkWindow *window = GTK_WINDOW (plug);
 142
 143   GTK_NOTE (PLUGSOCKET,
 144             g_message ("GtkPlug: %s received", _gtk_xembed_message_name (message)));
 145
 146   switch (message)
 147     {
 148     case XEMBED_EMBEDDED_NOTIFY:
 149       break;
 150     case XEMBED_WINDOW_ACTIVATE:
 151       _gtk_window_set_is_active (window, TRUE);
 152       break;
 153     case XEMBED_WINDOW_DEACTIVATE:
 154       _gtk_window_set_is_active (window, FALSE);
 155       break;
 156
 157     case XEMBED_MODALITY_ON:
 158       _gtk_plug_handle_modality_on (plug);
 159       break;
 160     case XEMBED_MODALITY_OFF:
 161       _gtk_plug_handle_modality_off (plug);
 162       break;
 163
 164     case XEMBED_FOCUS_IN:
 165       _gtk_window_set_has_toplevel_focus (window, TRUE);
 166       switch (detail)
 167         {
 168         case XEMBED_FOCUS_FIRST:
 169           _gtk_plug_focus_first_last (plug, GTK_DIR_TAB_FORWARD);
 170           break;
 171         case XEMBED_FOCUS_LAST:
 172           _gtk_plug_focus_first_last (plug, GTK_DIR_TAB_BACKWARD);
 173           break;
 174         case XEMBED_FOCUS_CURRENT:
 175           break;
 176         }
 177       break;
 178
 179     case XEMBED_FOCUS_OUT:
 180       _gtk_window_set_has_toplevel_focus (window, FALSE);
 181       break;
 182
 183     case XEMBED_GRAB_KEY:
 184     case XEMBED_UNGRAB_KEY:
 185     case XEMBED_GTK_GRAB_KEY:
 186     case XEMBED_GTK_UNGRAB_KEY:
 187     case XEMBED_REQUEST_FOCUS:
 188     case XEMBED_FOCUS_NEXT:
 189     case XEMBED_FOCUS_PREV:
 190       g_warning ("GtkPlug: Invalid _XEMBED message %s received", _gtk_xembed_message_name (message));
 191       break;
 192
 193     default:
 194       GTK_NOTE(PLUGSOCKET,
 195                g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %d", message));
 196       break;
 197     }
 198 }
 199
 200 GdkFilterReturn
 201 _gtk_plug_windowing_filter_func (GdkXEvent *gdk_xevent,
 202                                  GdkEvent  *event,
 203                                  gpointer   data)
 204 {
 205   GdkScreen *screen = gdk_drawable_get_screen (event->any.window);
 206   GdkDisplay *display = gdk_screen_get_display (screen);
 207   GtkPlug *plug = GTK_PLUG (data);
 208   XEvent *xevent = (XEvent *)gdk_xevent;
 209
 210   GdkFilterReturn return_val;
 211
 212   return_val = GDK_FILTER_CONTINUE;
 213
 214   switch (xevent->type)
 215     {
 216     case ClientMessage:
 217       if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED"))
 218         {
 219           _gtk_xembed_push_message (xevent);
 220           handle_xembed_message (plug,
 221                                  xevent->xclient.data.l[1],
 222                                  xevent->xclient.data.l[2],
 223                                  xevent->xclient.data.l[3],
 224                                  xevent->xclient.data.l[4],
 225                                  xevent->xclient.data.l[0]);
 226           _gtk_xembed_pop_message ();
 227
 228           return_val = GDK_FILTER_REMOVE;
 229         }
 230       else if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
 231         {
 232           /* We filter these out because we take being reparented back to the
 233            * root window as the reliable end of the embedding protocol
 234            */
 235
 236           return_val = GDK_FILTER_REMOVE;
 237         }
 238       break;
 239     case ReparentNotify:
 240       {
 241         XReparentEvent *xre = &xevent->xreparent;
 242         gboolean was_embedded = plug->socket_window != NULL;
 243
 244         GTK_NOTE (PLUGSOCKET, g_message("GtkPlug: ReparentNotify received\n"));
 245
 246         return_val = GDK_FILTER_REMOVE;
 247
 248         g_object_ref (plug);
 249
 250         if (was_embedded)
 251           {
 252             /* End of embedding protocol for previous socket */
 253
 254             GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: end of embedding\n"));
 255             /* FIXME: race if we remove from another socket and
 256              * then add to a local window before we get notification
 257              * Probably need check in _gtk_plug_add_to_socket
 258              */
 259
 260             if (xre->parent != GDK_WINDOW_XWINDOW (plug->socket_window))
 261               {
 262                 GtkWidget *widget = GTK_WIDGET (plug);
 263
 264                 gdk_window_set_user_data (plug->socket_window, NULL);
 265                 g_object_unref (plug->socket_window);
 266                 plug->socket_window = NULL;
 267
 268                 /* Emit a delete window, as if the user attempted
 269                  * to close the toplevel. Simple as to how we
 270                  * handle WM_DELETE_WINDOW, if it isn't handled
 271                  * we destroy the widget. BUt only do this if
 272                  * we are being reparented to the root window.
 273                  * Moving from one embedder to another should
 274                  * be invisible to the app.
 275                  */
 276
 277                 if (xre->parent == GDK_WINDOW_XWINDOW (gdk_screen_get_root_window (screen)))
 278                   {
 279                     GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: calling gtk_plug_send_delete_event()\n"));
 280                     _gtk_plug_send_delete_event (widget);
 281
 282                     g_object_notify (G_OBJECT (plug), "embedded");
 283                   }
 284               }
 285             else
 286               goto done;
 287           }
 288
 289         if (xre->parent != GDK_WINDOW_XWINDOW (gdk_screen_get_root_window (screen)))
 290           {
 291             /* Start of embedding protocol */
 292
 293             GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: start of embedding\n"));
 294             plug->socket_window = gdk_window_lookup_for_display (display, xre->parent);
 295             if (plug->socket_window)
 296               {
 297                 gpointer user_data = NULL;
 298                 gdk_window_get_user_data (plug->socket_window, &user_data);
 299
 300                 if (user_data)
 301                   {
 302                     g_warning (G_STRLOC "Plug reparented unexpectedly into window in the same process");
 303                     plug->socket_window = NULL;
 304                     break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
 305                   }
 306
 307                 g_object_ref (plug->socket_window);
 308               }
 309             else
 310               {
 311                 plug->socket_window = gdk_window_foreign_new_for_display (display, xre->parent);
 312                 if (!plug->socket_window) /* Already gone */
 313                   break; /* FIXME: shouldn't this unref the plug? i.e. "goto done;" instead */
 314               }
 315
 316             _gtk_plug_add_all_grabbed_keys (plug);
 317
 318             if (!was_embedded)
 319               g_signal_emit_by_name (plug, "embedded");
 320
 321             g_object_notify (G_OBJECT (plug), "embedded");
 322           }
 323
 324       done:
 325         g_object_unref (plug);
 326
 327         break;
 328       }
 329     }
 330
 331   return return_val;
 332 }