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