Pileus Git - ~andy/gtk/blob - gtk/gtkplug.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 "gtkintl.h"
  34 #include "gtkprivate.h"
  35 #include "gtkplugprivate.h"
  36 #include "gtksocketprivate.h"
  37 #include "gtkwidgetprivate.h"
  38 #include "gtkwindowprivate.h"
  39
  40 #ifdef GDK_WINDOWING_X11
  41 #include "x11/gdkx.h"
  42 #endif
  43 #ifdef GDK_WINDOWING_WIN32
  44 #include "win32/gdkwin32.h"
  45 #endif
  46
  47 /**
  48  * SECTION:gtkplug
  49  * @Short_description: Toplevel for embedding into other processes
  50  * @Title: GtkPlug
  51  * @See_also: #GtkSocket
  52  *
  53  * Together with #GtkSocket, #GtkPlug provides the ability
  54  * to embed widgets from one process into another process
  55  * in a fashion that is transparent to the user. One
  56  * process creates a #GtkSocket widget and passes the
  57  * ID of that widget's window to the other process,
  58  * which then creates a #GtkPlug with that window ID.
  59  * Any widgets contained in the #GtkPlug then will appear
  60  * inside the first application's window.
  61  *
  62  * <note>
  63  * The #GtkPlug and #GtkSocket widgets are currently not available
  64  * on all platforms supported by GTK+.
  65  * </note>
  66  */
  67
  68 static void            gtk_plug_get_property          (GObject     *object,
  69                                                        guint        prop_id,
  70                                                        GValue      *value,
  71                                                        GParamSpec  *pspec);
  72 static void            gtk_plug_finalize              (GObject          *object);
  73 static void            gtk_plug_realize               (GtkWidget        *widget);
  74 static void            gtk_plug_unrealize             (GtkWidget        *widget);
  75 static void            gtk_plug_show                  (GtkWidget        *widget);
  76 static void            gtk_plug_hide                  (GtkWidget        *widget);
  77 static void            gtk_plug_map                   (GtkWidget        *widget);
  78 static void            gtk_plug_unmap                 (GtkWidget        *widget);
  79 static void            gtk_plug_size_allocate         (GtkWidget        *widget,
  80                                                        GtkAllocation    *allocation);
  81 static gboolean        gtk_plug_key_press_event       (GtkWidget        *widget,
  82                                                        GdkEventKey      *event);
  83 static gboolean        gtk_plug_focus_event           (GtkWidget        *widget,
  84                                                        GdkEventFocus    *event);
  85 static void            gtk_plug_set_focus             (GtkWindow        *window,
  86                                                        GtkWidget        *focus);
  87 static gboolean        gtk_plug_focus                 (GtkWidget        *widget,
  88                                                        GtkDirectionType  direction);
  89 static void            gtk_plug_check_resize          (GtkContainer     *container);
  90 static void            gtk_plug_keys_changed          (GtkWindow        *window);
  91
  92 static GtkBinClass *bin_class = NULL;
  93
  94 typedef struct
  95 {
  96   guint                  accelerator_key;
  97   GdkModifierType        accelerator_mods;
  98 } GrabbedKey;
  99
 100 enum {
 101   PROP_0,
 102   PROP_EMBEDDED,
 103   PROP_SOCKET_WINDOW
 104 };
 105
 106 enum {
 107   EMBEDDED,
 108   LAST_SIGNAL
 109 };
 110
 111 static guint plug_signals[LAST_SIGNAL] = { 0 };
 112
 113 G_DEFINE_TYPE (GtkPlug, gtk_plug, GTK_TYPE_WINDOW)
 114
 115 static void
 116 gtk_plug_get_property (GObject    *object,
 117                        guint       prop_id,
 118                        GValue     *value,
 119                        GParamSpec *pspec)
 120 {
 121   GtkPlug *plug = GTK_PLUG (object);
 122   GtkPlugPrivate *priv = plug->priv;
 123
 124   switch (prop_id)
 125     {
 126     case PROP_EMBEDDED:
 127       g_value_set_boolean (value, priv->socket_window != NULL);
 128       break;
 129     case PROP_SOCKET_WINDOW:
 130       g_value_set_object (value, priv->socket_window);
 131       break;
 132     default:
 133       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 134       break;
 135     }
 136 }
 137
 138 static void
 139 gtk_plug_class_init (GtkPlugClass *class)
 140 {
 141   GObjectClass *gobject_class = (GObjectClass *)class;
 142   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
 143   GtkWindowClass *window_class = (GtkWindowClass *)class;
 144   GtkContainerClass *container_class = (GtkContainerClass *)class;
 145
 146   bin_class = g_type_class_peek (GTK_TYPE_BIN);
 147
 148   gobject_class->get_property = gtk_plug_get_property;
 149   gobject_class->finalize = gtk_plug_finalize;
 150
 151   widget_class->realize = gtk_plug_realize;
 152   widget_class->unrealize = gtk_plug_unrealize;
 153   widget_class->key_press_event = gtk_plug_key_press_event;
 154   widget_class->focus_in_event = gtk_plug_focus_event;
 155   widget_class->focus_out_event = gtk_plug_focus_event;
 156
 157   widget_class->show = gtk_plug_show;
 158   widget_class->hide = gtk_plug_hide;
 159   widget_class->map = gtk_plug_map;
 160   widget_class->unmap = gtk_plug_unmap;
 161   widget_class->size_allocate = gtk_plug_size_allocate;
 162
 163   widget_class->focus = gtk_plug_focus;
 164
 165   container_class->check_resize = gtk_plug_check_resize;
 166
 167   window_class->set_focus = gtk_plug_set_focus;
 168   window_class->keys_changed = gtk_plug_keys_changed;
 169
 170   /**
 171    * GtkPlug:embedded:
 172    *
 173    * %TRUE if the plug is embedded in a socket.
 174    *
 175    * Since: 2.12
 176    */
 177   g_object_class_install_property (gobject_class,
 178                                    PROP_EMBEDDED,
 179                                    g_param_spec_boolean ("embedded",
 180                                                          P_("Embedded"),
 181                                                          P_("Whether the plug is embedded"),
 182                                                          FALSE,
 183                                                          GTK_PARAM_READABLE));
 184
 185   /**
 186    * GtkPlug:socket-window:
 187    *
 188    * The window of the socket the plug is embedded in.
 189    *
 190    * Since: 2.14
 191    */
 192   g_object_class_install_property (gobject_class,
 193                                    PROP_SOCKET_WINDOW,
 194                                    g_param_spec_object ("socket-window",
 195                                                         P_("Socket Window"),
 196                                                         P_("The window of the socket the plug is embedded in"),
 197                                                         GDK_TYPE_WINDOW,
 198                                                         GTK_PARAM_READABLE));
 199
 200   /**
 201    * GtkPlug::embedded:
 202    * @plug: the object on which the signal was emitted
 203    *
 204    * Gets emitted when the plug becomes embedded in a socket.
 205    */
 206   plug_signals[EMBEDDED] =
 207     g_signal_new (I_("embedded"),
 208                   G_OBJECT_CLASS_TYPE (class),
 209                   G_SIGNAL_RUN_LAST,
 210                   G_STRUCT_OFFSET (GtkPlugClass, embedded),
 211                   NULL, NULL,
 212                   _gtk_marshal_VOID__VOID,
 213                   G_TYPE_NONE, 0);
 214
 215   g_type_class_add_private (class, sizeof (GtkPlugPrivate));
 216 }
 217
 218 static void
 219 gtk_plug_init (GtkPlug *plug)
 220 {
 221   plug->priv = G_TYPE_INSTANCE_GET_PRIVATE (plug,
 222                                             GTK_TYPE_PLUG,
 223                                             GtkPlugPrivate);
 224 }
 225
 226 static void
 227 gtk_plug_set_is_child (GtkPlug  *plug,
 228                        gboolean  is_child)
 229 {
 230   GtkPlugPrivate *priv = plug->priv;
 231   GtkWidget *widget = GTK_WIDGET (plug);
 232
 233   g_assert (!gtk_widget_get_parent (widget));
 234
 235   if (is_child)
 236     {
 237       if (priv->modality_window)
 238         _gtk_plug_handle_modality_off (plug);
 239
 240       if (priv->modality_group)
 241         {
 242           gtk_window_group_remove_window (priv->modality_group, GTK_WINDOW (plug));
 243           g_object_unref (priv->modality_group);
 244           priv->modality_group = NULL;
 245         }
 246
 247       /* As a toplevel, the MAPPED flag doesn't correspond
 248        * to whether the widget->window is mapped; we unmap
 249        * here, but don't bother remapping -- we will get mapped
 250        * by gtk_widget_set_parent ().
 251        */
 252       if (gtk_widget_get_mapped (widget))
 253         gtk_widget_unmap (widget);
 254
 255       _gtk_window_set_is_toplevel (GTK_WINDOW (plug), FALSE);
 256       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_PARENT);
 257
 258       _gtk_widget_propagate_hierarchy_changed (widget, widget);
 259     }
 260   else
 261     {
 262       if (gtk_window_get_focus (GTK_WINDOW (plug)))
 263         gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 264       if (gtk_window_get_default_widget (GTK_WINDOW (plug)))
 265         gtk_window_set_default (GTK_WINDOW (plug), NULL);
 266
 267       priv->modality_group = gtk_window_group_new ();
 268       gtk_window_group_add_window (priv->modality_group, GTK_WINDOW (plug));
 269
 270       _gtk_window_set_is_toplevel (GTK_WINDOW (plug), TRUE);
 271       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_QUEUE);
 272
 273       _gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), NULL);
 274     }
 275 }
 276
 277 /**
 278  * gtk_plug_get_id:
 279  * @plug: a #GtkPlug.
 280  *
 281  * Gets the window ID of a #GtkPlug widget, which can then
 282  * be used to embed this window inside another window, for
 283  * instance with gtk_socket_add_id().
 284  *
 285  * Return value: the window ID for the plug
 286  **/
 287 GdkNativeWindow
 288 gtk_plug_get_id (GtkPlug *plug)
 289 {
 290   g_return_val_if_fail (GTK_IS_PLUG (plug), 0);
 291
 292   if (!gtk_widget_get_realized (GTK_WIDGET (plug)))
 293     gtk_widget_realize (GTK_WIDGET (plug));
 294
 295   return _gtk_plug_windowing_get_id (plug);
 296 }
 297
 298 /**
 299  * gtk_plug_get_embedded:
 300  * @plug: a #GtkPlug
 301  *
 302  * Determines whether the plug is embedded in a socket.
 303  *
 304  * Return value: %TRUE if the plug is embedded in a socket
 305  *
 306  * Since: 2.14
 307  **/
 308 gboolean
 309 gtk_plug_get_embedded (GtkPlug *plug)
 310 {
 311   g_return_val_if_fail (GTK_IS_PLUG (plug), FALSE);
 312
 313   return plug->priv->socket_window != NULL;
 314 }
 315
 316 /**
 317  * gtk_plug_get_socket_window:
 318  * @plug: a #GtkPlug
 319  *
 320  * Retrieves the socket the plug is embedded in.
 321  *
 322  * Return value: (transfer none): the window of the socket, or %NULL
 323  *
 324  * Since: 2.14
 325  **/
 326 GdkWindow *
 327 gtk_plug_get_socket_window (GtkPlug *plug)
 328 {
 329   g_return_val_if_fail (GTK_IS_PLUG (plug), NULL);
 330
 331   return plug->priv->socket_window;
 332 }
 333
 334 /**
 335  * _gtk_plug_add_to_socket:
 336  * @plug: a #GtkPlug
 337  * @socket_: a #GtkSocket
 338  *
 339  * Adds a plug to a socket within the same application.
 340  **/
 341 void
 342 _gtk_plug_add_to_socket (GtkPlug   *plug,
 343                          GtkSocket *socket_)
 344 {
 345   GtkPlugPrivate *priv;
 346   GtkWidget *widget;
 347
 348   g_return_if_fail (GTK_IS_PLUG (plug));
 349   g_return_if_fail (GTK_IS_SOCKET (socket_));
 350   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (socket_)));
 351
 352   priv = plug->priv;
 353   widget = GTK_WIDGET (plug);
 354
 355   gtk_plug_set_is_child (plug, TRUE);
 356   priv->same_app = TRUE;
 357   socket_->priv->same_app = TRUE;
 358   socket_->priv->plug_widget = widget;
 359
 360   priv->socket_window = gtk_widget_get_window (GTK_WIDGET (socket_));
 361   g_object_ref (priv->socket_window);
 362   g_signal_emit (plug, plug_signals[EMBEDDED], 0);
 363   g_object_notify (G_OBJECT (plug), "embedded");
 364
 365   if (gtk_widget_get_realized (widget))
 366     {
 367       GdkWindow *window;
 368
 369       window = gtk_widget_get_window (widget);
 370       gdk_window_reparent (window, priv->socket_window,
 371                            -gdk_window_get_width (window),
 372                            -gdk_window_get_height (window));
 373     }
 374
 375   gtk_widget_set_parent (widget, GTK_WIDGET (socket_));
 376
 377   g_signal_emit_by_name (socket_, "plug-added");
 378 }
 379
 380 /**
 381  * _gtk_plug_send_delete_event:
 382  * @widget: a #GtkWidget
 383  *
 384  * Send a GDK_DELETE event to the @widget and destroy it if
 385  * necessary. Internal GTK function, called from this file or the
 386  * backend-specific GtkPlug implementation.
 387  */
 388 void
 389 _gtk_plug_send_delete_event (GtkWidget *widget)
 390 {
 391   GdkEvent *event = gdk_event_new (GDK_DELETE);
 392
 393   event->any.window = g_object_ref (gtk_widget_get_window (widget));
 394   event->any.send_event = FALSE;
 395
 396   g_object_ref (widget);
 397
 398   if (!gtk_widget_event (widget, event))
 399     gtk_widget_destroy (widget);
 400
 401   g_object_unref (widget);
 402
 403   gdk_event_free (event);
 404 }
 405
 406 /**
 407  * _gtk_plug_remove_from_socket:
 408  * @plug: a #GtkPlug
 409  * @socket_: a #GtkSocket
 410  *
 411  * Removes a plug from a socket within the same application.
 412  **/
 413 void
 414 _gtk_plug_remove_from_socket (GtkPlug   *plug,
 415                               GtkSocket *socket_)
 416 {
 417   GtkPlugPrivate *priv;
 418   GtkWidget *widget;
 419   GdkWindow *window;
 420   gboolean result;
 421   gboolean widget_was_visible;
 422
 423   g_return_if_fail (GTK_IS_PLUG (plug));
 424   g_return_if_fail (GTK_IS_SOCKET (socket_));
 425   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (plug)));
 426
 427   priv = plug->priv;
 428   widget = GTK_WIDGET (plug);
 429
 430   if (_gtk_widget_get_in_reparent (widget))
 431     return;
 432
 433   g_object_ref (plug);
 434   g_object_ref (socket_);
 435
 436   widget_was_visible = gtk_widget_get_visible (widget);
 437   window = gtk_widget_get_window (widget);
 438
 439   gdk_window_hide (window);
 440   _gtk_widget_set_in_reparent (widget, TRUE);
 441   gdk_window_reparent (window,
 442                        gtk_widget_get_root_window (widget),
 443                        0, 0);
 444   gtk_widget_unparent (GTK_WIDGET (plug));
 445   _gtk_widget_set_in_reparent (widget, FALSE);
 446
 447   socket_->priv->plug_widget = NULL;
 448   if (socket_->priv->plug_window != NULL)
 449     {
 450       g_object_unref (socket_->priv->plug_window);
 451       socket_->priv->plug_window = NULL;
 452     }
 453
 454   socket_->priv->same_app = FALSE;
 455
 456   priv->same_app = FALSE;
 457   if (priv->socket_window != NULL)
 458     {
 459       g_object_unref (priv->socket_window);
 460       priv->socket_window = NULL;
 461     }
 462   gtk_plug_set_is_child (plug, FALSE);
 463
 464   g_signal_emit_by_name (socket_, "plug-removed", &result);
 465   if (!result)
 466     gtk_widget_destroy (GTK_WIDGET (socket_));
 467
 468   if (window)
 469     _gtk_plug_send_delete_event (widget);
 470
 471   g_object_unref (plug);
 472
 473   if (widget_was_visible && gtk_widget_get_visible (GTK_WIDGET (socket_)))
 474     gtk_widget_queue_resize (GTK_WIDGET (socket_));
 475
 476   g_object_unref (socket_);
 477 }
 478
 479 /**
 480  * gtk_plug_construct:
 481  * @plug: a #GtkPlug.
 482  * @socket_id: the XID of the socket's window.
 483  *
 484  * Finish the initialization of @plug for a given #GtkSocket identified by
 485  * @socket_id. This function will generally only be used by classes deriving from #GtkPlug.
 486  **/
 487 void
 488 gtk_plug_construct (GtkPlug         *plug,
 489                     GdkNativeWindow  socket_id)
 490 {
 491   gtk_plug_construct_for_display (plug, gdk_display_get_default (), socket_id);
 492 }
 493
 494 /**
 495  * gtk_plug_construct_for_display:
 496  * @plug: a #GtkPlug.
 497  * @display: the #GdkDisplay associated with @socket_id's
 498  *           #GtkSocket.
 499  * @socket_id: the XID of the socket's window.
 500  *
 501  * Finish the initialization of @plug for a given #GtkSocket identified by
 502  * @socket_id which is currently displayed on @display.
 503  * This function will generally only be used by classes deriving from #GtkPlug.
 504  *
 505  * Since: 2.2
 506  **/
 507 void
 508 gtk_plug_construct_for_display (GtkPlug         *plug,
 509                                 GdkDisplay      *display,
 510                                 GdkNativeWindow  socket_id)
 511 {
 512   GtkPlugPrivate *priv;
 513
 514   g_return_if_fail (GTK_IS_PLUG (plug));
 515   g_return_if_fail (GDK_IS_DISPLAY (display));
 516
 517   priv = plug->priv;
 518
 519   if (socket_id)
 520     {
 521       gpointer user_data = NULL;
 522
 523 #ifdef GDK_WINDOWING_X11
 524       if (GDK_IS_X11_DISPLAY (display))
 525         priv->socket_window = gdk_x11_window_lookup_for_display (display, socket_id);
 526       else
 527 #endif
 528         priv->socket_window = NULL;
 529
 530       if (priv->socket_window)
 531         {
 532           gdk_window_get_user_data (priv->socket_window, &user_data);
 533
 534           if (user_data)
 535             {
 536               if (GTK_IS_SOCKET (user_data))
 537                 _gtk_plug_add_to_socket (plug, user_data);
 538               else
 539                 {
 540                   g_warning (G_STRLOC "Can't create GtkPlug as child of non-GtkSocket");
 541                   priv->socket_window = NULL;
 542                 }
 543             }
 544           else
 545             g_object_ref (priv->socket_window);
 546         }
 547       else
 548 #ifdef GDK_WINDOWING_X11
 549       if (GDK_IS_X11_DISPLAY (display))
 550         priv->socket_window = gdk_x11_window_foreign_new_for_display (display, socket_id);
 551 #endif
 552 #ifdef GDK_WINDOWING_WIN32
 553       if (GDK_IS_WIN32_DISPLAY (display))
 554         priv->socket_window = gdk_win32_window_foreign_new_for_display (display, socket_id);
 555 #endif
 556
 557       if (priv->socket_window) {
 558         g_signal_emit (plug, plug_signals[EMBEDDED], 0);
 559
 560         g_object_notify (G_OBJECT (plug), "embedded");
 561       }
 562     }
 563 }
 564
 565 /**
 566  * gtk_plug_new:
 567  * @socket_id:  the window ID of the socket, or 0.
 568  *
 569  * Creates a new plug widget inside the #GtkSocket identified
 570  * by @socket_id. If @socket_id is 0, the plug is left "unplugged" and
 571  * can later be plugged into a #GtkSocket by  gtk_socket_add_id().
 572  *
 573  * Return value: the new #GtkPlug widget.
 574  **/
 575 GtkWidget*
 576 gtk_plug_new (GdkNativeWindow socket_id)
 577 {
 578   return gtk_plug_new_for_display (gdk_display_get_default (), socket_id);
 579 }
 580
 581 /**
 582  * gtk_plug_new_for_display:
 583  * @display: the #GdkDisplay on which @socket_id is displayed
 584  * @socket_id: the XID of the socket's window.
 585  *
 586  * Create a new plug widget inside the #GtkSocket identified by socket_id.
 587  *
 588  * Return value: the new #GtkPlug widget.
 589  *
 590  * Since: 2.2
 591  */
 592 GtkWidget*
 593 gtk_plug_new_for_display (GdkDisplay      *display,
 594                           GdkNativeWindow  socket_id)
 595 {
 596   GtkPlug *plug;
 597
 598   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
 599
 600   plug = g_object_new (GTK_TYPE_PLUG, NULL);
 601   gtk_plug_construct_for_display (plug, display, socket_id);
 602   return GTK_WIDGET (plug);
 603 }
 604
 605 static void
 606 gtk_plug_finalize (GObject *object)
 607 {
 608   GtkPlug *plug = GTK_PLUG (object);
 609   GtkPlugPrivate *priv = plug->priv;
 610
 611   if (priv->grabbed_keys)
 612     {
 613       g_hash_table_destroy (priv->grabbed_keys);
 614       priv->grabbed_keys = NULL;
 615     }
 616
 617   G_OBJECT_CLASS (gtk_plug_parent_class)->finalize (object);
 618 }
 619
 620 static void
 621 gtk_plug_unrealize (GtkWidget *widget)
 622 {
 623   GtkPlug *plug = GTK_PLUG (widget);
 624   GtkPlugPrivate *priv = plug->priv;
 625
 626   if (priv->socket_window != NULL)
 627     {
 628       gdk_window_set_user_data (priv->socket_window, NULL);
 629       g_object_unref (priv->socket_window);
 630       priv->socket_window = NULL;
 631
 632       g_object_notify (G_OBJECT (widget), "embedded");
 633     }
 634
 635   if (!priv->same_app)
 636     {
 637       if (priv->modality_window)
 638         _gtk_plug_handle_modality_off (plug);
 639
 640       gtk_window_group_remove_window (priv->modality_group, GTK_WINDOW (plug));
 641       g_object_unref (priv->modality_group);
 642     }
 643
 644   GTK_WIDGET_CLASS (gtk_plug_parent_class)->unrealize (widget);
 645 }
 646
 647 static void
 648 gtk_plug_realize (GtkWidget *widget)
 649 {
 650   GtkAllocation allocation;
 651   GtkPlug *plug = GTK_PLUG (widget);
 652   GtkPlugPrivate *priv = plug->priv;
 653   GtkWindow *window = GTK_WINDOW (widget);
 654   GdkWindow *gdk_window;
 655   GdkWindowAttr attributes;
 656   const gchar *title;
 657   gchar *wmclass_name, *wmclass_class;
 658   gint attributes_mask;
 659
 660   gtk_widget_set_realized (widget, TRUE);
 661
 662   title = gtk_window_get_title (window);
 663   _gtk_window_get_wmclass (window, &wmclass_name, &wmclass_class);
 664   gtk_widget_get_allocation (widget, &allocation);
 665
 666   attributes.window_type = GDK_WINDOW_CHILD;    /* XXX GDK_WINDOW_PLUG ? */
 667   attributes.title = (gchar *) title;
 668   attributes.wmclass_name = wmclass_name;
 669   attributes.wmclass_class = wmclass_class;
 670   attributes.width = allocation.width;
 671   attributes.height = allocation.height;
 672   attributes.wclass = GDK_INPUT_OUTPUT;
 673
 674   /* this isn't right - we should match our parent's visual/colormap.
 675    * though that will require handling "foreign" colormaps */
 676   attributes.visual = gtk_widget_get_visual (widget);
 677   attributes.event_mask = gtk_widget_get_events (widget);
 678   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 679                             GDK_KEY_PRESS_MASK |
 680                             GDK_KEY_RELEASE_MASK |
 681                             GDK_ENTER_NOTIFY_MASK |
 682                             GDK_LEAVE_NOTIFY_MASK |
 683                             GDK_STRUCTURE_MASK);
 684
 685   attributes_mask = GDK_WA_VISUAL;
 686   attributes_mask |= (title ? GDK_WA_TITLE : 0);
 687   attributes_mask |= (wmclass_name ? GDK_WA_WMCLASS : 0);
 688
 689   if (gtk_widget_is_toplevel (widget))
 690     {
 691       attributes.window_type = GDK_WINDOW_TOPLEVEL;
 692
 693       gdk_error_trap_push ();
 694       if (priv->socket_window)
 695         gdk_window = gdk_window_new (priv->socket_window,
 696                                      &attributes, attributes_mask);
 697       else /* If it's a passive plug, we use the root window */
 698         gdk_window = gdk_window_new (gtk_widget_get_root_window (widget),
 699                                      &attributes, attributes_mask);
 700       gtk_widget_set_window (widget, gdk_window);
 701
 702       gdk_display_sync (gtk_widget_get_display (widget));
 703       if (gdk_error_trap_pop ()) /* Uh-oh */
 704         {
 705           gdk_error_trap_push ();
 706           gdk_window_destroy (gdk_window);
 707           gdk_error_trap_pop_ignored ();
 708           gdk_window = gdk_window_new (gtk_widget_get_root_window (widget),
 709                                    &attributes, attributes_mask);
 710           gtk_widget_set_window (widget, gdk_window);
 711         }
 712
 713       gdk_window_add_filter (gdk_window,
 714                              _gtk_plug_windowing_filter_func,
 715                              widget);
 716
 717       priv->modality_group = gtk_window_group_new ();
 718       gtk_window_group_add_window (priv->modality_group, window);
 719
 720       _gtk_plug_windowing_realize_toplevel (plug);
 721     }
 722   else
 723     {
 724       gdk_window = gdk_window_new (gtk_widget_get_parent_window (widget),
 725                                    &attributes, attributes_mask);
 726       gtk_widget_set_window (widget, gdk_window);
 727     }
 728
 729   gdk_window_set_user_data (gdk_window, window);
 730
 731   gtk_widget_style_attach (widget);
 732   gtk_style_set_background (gtk_widget_get_style (widget),
 733                             gdk_window, GTK_STATE_NORMAL);
 734
 735   gdk_window_enable_synchronized_configure (gdk_window);
 736 }
 737
 738 static void
 739 gtk_plug_show (GtkWidget *widget)
 740 {
 741   if (gtk_widget_is_toplevel (widget))
 742     GTK_WIDGET_CLASS (gtk_plug_parent_class)->show (widget);
 743   else
 744     GTK_WIDGET_CLASS (bin_class)->show (widget);
 745 }
 746
 747 static void
 748 gtk_plug_hide (GtkWidget *widget)
 749 {
 750   if (gtk_widget_is_toplevel (widget))
 751     GTK_WIDGET_CLASS (gtk_plug_parent_class)->hide (widget);
 752   else
 753     GTK_WIDGET_CLASS (bin_class)->hide (widget);
 754 }
 755
 756 /* From gdkinternals.h */
 757 void gdk_synthesize_window_state (GdkWindow     *window,
 758                                   GdkWindowState unset_flags,
 759                                   GdkWindowState set_flags);
 760
 761 static void
 762 gtk_plug_map (GtkWidget *widget)
 763 {
 764   if (gtk_widget_is_toplevel (widget))
 765     {
 766       GtkBin *bin = GTK_BIN (widget);
 767       GtkPlug *plug = GTK_PLUG (widget);
 768       GtkWidget *child;
 769
 770       gtk_widget_set_mapped (widget, TRUE);
 771
 772       child = gtk_bin_get_child (bin);
 773       if (child != NULL &&
 774           gtk_widget_get_visible (child) &&
 775           !gtk_widget_get_mapped (child))
 776         gtk_widget_map (child);
 777
 778       _gtk_plug_windowing_map_toplevel (plug);
 779
 780       gdk_synthesize_window_state (gtk_widget_get_window (widget),
 781                                    GDK_WINDOW_STATE_WITHDRAWN,
 782                                    0);
 783     }
 784   else
 785     GTK_WIDGET_CLASS (bin_class)->map (widget);
 786 }
 787
 788 static void
 789 gtk_plug_unmap (GtkWidget *widget)
 790 {
 791   if (gtk_widget_is_toplevel (widget))
 792     {
 793       GtkPlug *plug = GTK_PLUG (widget);
 794       GdkWindow *window;
 795
 796       window = gtk_widget_get_window (widget);
 797
 798       gtk_widget_set_mapped (widget, FALSE);
 799
 800       gdk_window_hide (window);
 801
 802       _gtk_plug_windowing_unmap_toplevel (plug);
 803
 804       gdk_synthesize_window_state (window,
 805                                    0,
 806                                    GDK_WINDOW_STATE_WITHDRAWN);
 807     }
 808   else
 809     GTK_WIDGET_CLASS (bin_class)->unmap (widget);
 810 }
 811
 812 static void
 813 gtk_plug_size_allocate (GtkWidget     *widget,
 814                         GtkAllocation *allocation)
 815 {
 816   GtkWidget *child;
 817
 818   if (gtk_widget_is_toplevel (widget))
 819     GTK_WIDGET_CLASS (gtk_plug_parent_class)->size_allocate (widget, allocation);
 820   else
 821     {
 822       GtkBin *bin = GTK_BIN (widget);
 823
 824       gtk_widget_set_allocation (widget, allocation);
 825
 826       if (gtk_widget_get_realized (widget))
 827         gdk_window_move_resize (gtk_widget_get_window (widget),
 828                                 allocation->x, allocation->y,
 829                                 allocation->width, allocation->height);
 830
 831       child = gtk_bin_get_child (bin);
 832
 833       if (child != NULL && gtk_widget_get_visible (child))
 834         {
 835           GtkAllocation child_allocation;
 836
 837           child_allocation.x = child_allocation.y = gtk_container_get_border_width (GTK_CONTAINER (widget));
 838           child_allocation.width =
 839             MAX (1, (gint)allocation->width - child_allocation.x * 2);
 840           child_allocation.height =
 841             MAX (1, (gint)allocation->height - child_allocation.y * 2);
 842
 843           gtk_widget_size_allocate (child, &child_allocation);
 844         }
 845
 846     }
 847 }
 848
 849 static gboolean
 850 gtk_plug_key_press_event (GtkWidget   *widget,
 851                           GdkEventKey *event)
 852 {
 853   if (gtk_widget_is_toplevel (widget))
 854     return GTK_WIDGET_CLASS (gtk_plug_parent_class)->key_press_event (widget, event);
 855   else
 856     return FALSE;
 857 }
 858
 859 static gboolean
 860 gtk_plug_focus_event (GtkWidget      *widget,
 861                       GdkEventFocus  *event)
 862 {
 863   /* We eat focus-in events and focus-out events, since they
 864    * can be generated by something like a keyboard grab on
 865    * a child of the plug.
 866    */
 867   return FALSE;
 868 }
 869
 870 static void
 871 gtk_plug_set_focus (GtkWindow *window,
 872                     GtkWidget *focus)
 873 {
 874   GtkPlug *plug = GTK_PLUG (window);
 875
 876   GTK_WINDOW_CLASS (gtk_plug_parent_class)->set_focus (window, focus);
 877
 878   /* Ask for focus from embedder
 879    */
 880
 881   if (focus && !gtk_window_has_toplevel_focus (window))
 882     _gtk_plug_windowing_set_focus (plug);
 883 }
 884
 885 static guint
 886 grabbed_key_hash (gconstpointer a)
 887 {
 888   const GrabbedKey *key = a;
 889   guint h;
 890
 891   h = key->accelerator_key << 16;
 892   h ^= key->accelerator_key >> 16;
 893   h ^= key->accelerator_mods;
 894
 895   return h;
 896 }
 897
 898 static gboolean
 899 grabbed_key_equal (gconstpointer a, gconstpointer b)
 900 {
 901   const GrabbedKey *keya = a;
 902   const GrabbedKey *keyb = b;
 903
 904   return (keya->accelerator_key == keyb->accelerator_key &&
 905           keya->accelerator_mods == keyb->accelerator_mods);
 906 }
 907
 908 static void
 909 add_grabbed_key (gpointer key, gpointer val, gpointer data)
 910 {
 911   GrabbedKey *grabbed_key = key;
 912   GtkPlug *plug = data;
 913   GtkPlugPrivate *priv = plug->priv;
 914
 915   if (!priv->grabbed_keys ||
 916       !g_hash_table_lookup (priv->grabbed_keys, grabbed_key))
 917     {
 918       _gtk_plug_windowing_add_grabbed_key (plug,
 919                                            grabbed_key->accelerator_key,
 920                                            grabbed_key->accelerator_mods);
 921     }
 922 }
 923
 924 static void
 925 add_grabbed_key_always (gpointer key,
 926                         gpointer val,
 927                         gpointer data)
 928 {
 929   GrabbedKey *grabbed_key = key;
 930   GtkPlug *plug = data;
 931
 932   _gtk_plug_windowing_add_grabbed_key (plug,
 933                                        grabbed_key->accelerator_key,
 934                                        grabbed_key->accelerator_mods);
 935 }
 936
 937 /**
 938  * _gtk_plug_add_all_grabbed_keys:
 939  *
 940  * @plug: a #GtkPlug
 941  *
 942  * Calls _gtk_plug_windowing_add_grabbed_key() on all the grabbed keys
 943  * in the @plug.
 944  */
 945 void
 946 _gtk_plug_add_all_grabbed_keys (GtkPlug *plug)
 947 {
 948   GtkPlugPrivate *priv = plug->priv;
 949
 950   if (priv->grabbed_keys)
 951     g_hash_table_foreach (priv->grabbed_keys, add_grabbed_key_always, plug);
 952 }
 953
 954 static void
 955 remove_grabbed_key (gpointer key, gpointer val, gpointer data)
 956 {
 957   GrabbedKey *grabbed_key = key;
 958   GtkPlug *plug = data;
 959   GtkPlugPrivate *priv = plug->priv;
 960
 961   if (!priv->grabbed_keys ||
 962       !g_hash_table_lookup (priv->grabbed_keys, grabbed_key))
 963     {
 964       _gtk_plug_windowing_remove_grabbed_key (plug,
 965                                               grabbed_key->accelerator_key,
 966                                               grabbed_key->accelerator_mods);
 967     }
 968 }
 969
 970 static void
 971 keys_foreach (GtkWindow      *window,
 972               guint           keyval,
 973               GdkModifierType modifiers,
 974               gboolean        is_mnemonic,
 975               gpointer        data)
 976 {
 977   GHashTable *new_grabbed_keys = data;
 978   GrabbedKey *key = g_slice_new (GrabbedKey);
 979
 980   key->accelerator_key = keyval;
 981   key->accelerator_mods = modifiers;
 982
 983   g_hash_table_replace (new_grabbed_keys, key, key);
 984 }
 985
 986 static void
 987 grabbed_key_free (gpointer data)
 988 {
 989   g_slice_free (GrabbedKey, data);
 990 }
 991
 992 static void
 993 gtk_plug_keys_changed (GtkWindow *window)
 994 {
 995   GHashTable *new_grabbed_keys, *old_grabbed_keys;
 996   GtkPlug *plug = GTK_PLUG (window);
 997   GtkPlugPrivate *priv = plug->priv;
 998
 999   new_grabbed_keys = g_hash_table_new_full (grabbed_key_hash, grabbed_key_equal, (GDestroyNotify)grabbed_key_free, NULL);
1000   _gtk_window_keys_foreach (window, keys_foreach, new_grabbed_keys);
1001
1002   if (priv->socket_window)
1003     g_hash_table_foreach (new_grabbed_keys, add_grabbed_key, plug);
1004
1005   old_grabbed_keys = priv->grabbed_keys;
1006   priv->grabbed_keys = new_grabbed_keys;
1007
1008   if (old_grabbed_keys)
1009     {
1010       if (priv->socket_window)
1011         g_hash_table_foreach (old_grabbed_keys, remove_grabbed_key, plug);
1012       g_hash_table_destroy (old_grabbed_keys);
1013     }
1014 }
1015
1016 static gboolean
1017 gtk_plug_focus (GtkWidget        *widget,
1018                 GtkDirectionType  direction)
1019 {
1020   GtkBin *bin = GTK_BIN (widget);
1021   GtkPlug *plug = GTK_PLUG (widget);
1022   GtkWindow *window = GTK_WINDOW (widget);
1023   GtkContainer *container = GTK_CONTAINER (widget);
1024   GtkWidget *child;
1025   GtkWidget *old_focus_child;
1026   GtkWidget *parent;
1027
1028   old_focus_child = gtk_container_get_focus_child (container);
1029   /* We override GtkWindow's behavior, since we don't want wrapping here.
1030    */
1031   if (old_focus_child)
1032     {
1033       GtkWidget *focus_widget;
1034
1035       if (gtk_widget_child_focus (old_focus_child, direction))
1036         return TRUE;
1037
1038       focus_widget = gtk_window_get_focus (window);
1039       if (focus_widget)
1040         {
1041           /* Wrapped off the end, clear the focus setting for the toplevel */
1042           parent = gtk_widget_get_parent (focus_widget);
1043           while (parent)
1044             {
1045               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
1046               parent = gtk_widget_get_parent (parent);
1047             }
1048
1049           gtk_window_set_focus (GTK_WINDOW (container), NULL);
1050         }
1051     }
1052   else
1053     {
1054       /* Try to focus the first widget in the window */
1055       child = gtk_bin_get_child (bin);
1056       if (child && gtk_widget_child_focus (child, direction))
1057         return TRUE;
1058     }
1059
1060   if (!gtk_container_get_focus_child (GTK_CONTAINER (window)))
1061     _gtk_plug_windowing_focus_to_parent (plug, direction);
1062
1063   return FALSE;
1064 }
1065
1066 static void
1067 gtk_plug_check_resize (GtkContainer *container)
1068 {
1069   if (gtk_widget_is_toplevel (GTK_WIDGET (container)))
1070     GTK_CONTAINER_CLASS (gtk_plug_parent_class)->check_resize (container);
1071   else
1072     GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
1073 }
1074
1075 /**
1076  * _gtk_plug_handle_modality_on:
1077  *
1078  * @plug: a #GtkPlug
1079  *
1080  * Called from the GtkPlug backend when the corresponding socket has
1081  * told the plug that it modality has toggled on.
1082  */
1083 void
1084 _gtk_plug_handle_modality_on (GtkPlug *plug)
1085 {
1086   GtkPlugPrivate *priv = plug->priv;
1087
1088   if (!priv->modality_window)
1089     {
1090       priv->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
1091       gtk_window_set_screen (GTK_WINDOW (priv->modality_window),
1092                              gtk_widget_get_screen (GTK_WIDGET (plug)));
1093       gtk_widget_realize (priv->modality_window);
1094       gtk_window_group_add_window (priv->modality_group, GTK_WINDOW (priv->modality_window));
1095       gtk_grab_add (priv->modality_window);
1096     }
1097 }
1098
1099 /**
1100  * _gtk_plug_handle_modality_off:
1101  *
1102  * @plug: a #GtkPlug
1103  *
1104  * Called from the GtkPlug backend when the corresponding socket has
1105  * told the plug that it modality has toggled off.
1106  */
1107 void
1108 _gtk_plug_handle_modality_off (GtkPlug *plug)
1109 {
1110   GtkPlugPrivate *priv = plug->priv;
1111
1112   if (priv->modality_window)
1113     {
1114       gtk_widget_destroy (priv->modality_window);
1115       priv->modality_window = NULL;
1116     }
1117 }
1118
1119 /**
1120  * _gtk_plug_focus_first_last:
1121  *
1122  * @plug: a #GtkPlug
1123  * @direction: a direction
1124  *
1125  * Called from the GtkPlug backend when the corresponding socket has
1126  * told the plug that it has received the focus.
1127  */
1128 void
1129 _gtk_plug_focus_first_last (GtkPlug          *plug,
1130                             GtkDirectionType  direction)
1131 {
1132   GtkWindow *window = GTK_WINDOW (plug);
1133   GtkWidget *focus_widget;
1134   GtkWidget *parent;
1135
1136   focus_widget = gtk_window_get_focus (window);
1137   if (focus_widget)
1138     {
1139       parent = gtk_widget_get_parent (focus_widget);
1140       while (parent)
1141         {
1142           gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
1143           parent = gtk_widget_get_parent (parent);
1144         }
1145
1146       gtk_window_set_focus (GTK_WINDOW (plug), NULL);
1147     }
1148
1149   gtk_widget_child_focus (GTK_WIDGET (plug), direction);
1150 }