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