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