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   g_object_ref (widget);
 302
 303   if (!gtk_widget_event (widget, event))
 304     gtk_widget_destroy (widget);
 305
 306   g_object_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 = GTK_PLUG (widget);
 496
 497   if (plug->socket_window != NULL)
 498     {
 499       gdk_window_set_user_data (plug->socket_window, NULL);
 500       g_object_unref (plug->socket_window);
 501       plug->socket_window = NULL;
 502
 503       g_object_notify (G_OBJECT (widget), "embedded");
 504     }
 505
 506   if (!plug->same_app)
 507     {
 508       if (plug->modality_window)
 509         _gtk_plug_handle_modality_off (plug);
 510
 511       gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
 512       g_object_unref (plug->modality_group);
 513     }
 514
 515   if (GTK_WIDGET_CLASS (gtk_plug_parent_class)->unrealize)
 516     (* GTK_WIDGET_CLASS (gtk_plug_parent_class)->unrealize) (widget);
 517 }
 518
 519 static void
 520 gtk_plug_realize (GtkWidget *widget)
 521 {
 522   GtkWindow *window = GTK_WINDOW (widget);
 523   GtkPlug *plug = GTK_PLUG (widget);
 524   GdkWindowAttr attributes;
 525   gint attributes_mask;
 526
 527   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 528
 529   attributes.window_type = GDK_WINDOW_CHILD;    /* XXX GDK_WINDOW_PLUG ? */
 530   attributes.title = window->title;
 531   attributes.wmclass_name = window->wmclass_name;
 532   attributes.wmclass_class = window->wmclass_class;
 533   attributes.width = widget->allocation.width;
 534   attributes.height = widget->allocation.height;
 535   attributes.wclass = GDK_INPUT_OUTPUT;
 536
 537   /* this isn't right - we should match our parent's visual/colormap.
 538    * though that will require handling "foreign" colormaps */
 539   attributes.visual = gtk_widget_get_visual (widget);
 540   attributes.colormap = gtk_widget_get_colormap (widget);
 541   attributes.event_mask = gtk_widget_get_events (widget);
 542   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 543                             GDK_KEY_PRESS_MASK |
 544                             GDK_KEY_RELEASE_MASK |
 545                             GDK_ENTER_NOTIFY_MASK |
 546                             GDK_LEAVE_NOTIFY_MASK |
 547                             GDK_STRUCTURE_MASK);
 548
 549   attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
 550   attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
 551   attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
 552
 553   if (GTK_WIDGET_TOPLEVEL (widget))
 554     {
 555       attributes.window_type = GDK_WINDOW_TOPLEVEL;
 556
 557       gdk_error_trap_push ();
 558       if (plug->socket_window)
 559         widget->window = gdk_window_new (plug->socket_window,
 560                                          &attributes, attributes_mask);
 561       else /* If it's a passive plug, we use the root window */
 562         widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
 563                                          &attributes, attributes_mask);
 564
 565       gdk_display_sync (gtk_widget_get_display (widget));
 566       if (gdk_error_trap_pop ()) /* Uh-oh */
 567         {
 568           gdk_error_trap_push ();
 569           gdk_window_destroy (widget->window);
 570           gdk_flush ();
 571           gdk_error_trap_pop ();
 572           widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
 573                                            &attributes, attributes_mask);
 574         }
 575
 576       gdk_window_add_filter (widget->window,
 577                              _gtk_plug_windowing_filter_func,
 578                              widget);
 579
 580       plug->modality_group = gtk_window_group_new ();
 581       gtk_window_group_add_window (plug->modality_group, window);
 582
 583       _gtk_plug_windowing_realize_toplevel (plug);
 584     }
 585   else
 586     widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 587                                      &attributes, attributes_mask);
 588
 589   gdk_window_set_user_data (widget->window, window);
 590
 591   widget->style = gtk_style_attach (widget->style, widget->window);
 592   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 593
 594   gdk_window_enable_synchronized_configure (widget->window);
 595 }
 596
 597 static void
 598 gtk_plug_show (GtkWidget *widget)
 599 {
 600   if (GTK_WIDGET_TOPLEVEL (widget))
 601     GTK_WIDGET_CLASS (gtk_plug_parent_class)->show (widget);
 602   else
 603     GTK_WIDGET_CLASS (bin_class)->show (widget);
 604 }
 605
 606 static void
 607 gtk_plug_hide (GtkWidget *widget)
 608 {
 609   if (GTK_WIDGET_TOPLEVEL (widget))
 610     GTK_WIDGET_CLASS (gtk_plug_parent_class)->hide (widget);
 611   else
 612     GTK_WIDGET_CLASS (bin_class)->hide (widget);
 613 }
 614
 615 /* From gdkinternals.h */
 616 void gdk_synthesize_window_state (GdkWindow     *window,
 617                                   GdkWindowState unset_flags,
 618                                   GdkWindowState set_flags);
 619
 620 static void
 621 gtk_plug_map (GtkWidget *widget)
 622 {
 623   if (GTK_WIDGET_TOPLEVEL (widget))
 624     {
 625       GtkBin *bin = GTK_BIN (widget);
 626       GtkPlug *plug = GTK_PLUG (widget);
 627
 628       GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 629
 630       if (bin->child &&
 631           GTK_WIDGET_VISIBLE (bin->child) &&
 632           !GTK_WIDGET_MAPPED (bin->child))
 633         gtk_widget_map (bin->child);
 634
 635       _gtk_plug_windowing_map_toplevel (plug);
 636
 637       gdk_synthesize_window_state (widget->window,
 638                                    GDK_WINDOW_STATE_WITHDRAWN,
 639                                    0);
 640     }
 641   else
 642     GTK_WIDGET_CLASS (bin_class)->map (widget);
 643 }
 644
 645 static void
 646 gtk_plug_unmap (GtkWidget *widget)
 647 {
 648   if (GTK_WIDGET_TOPLEVEL (widget))
 649     {
 650       GtkPlug *plug = GTK_PLUG (widget);
 651
 652       GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 653
 654       gdk_window_hide (widget->window);
 655
 656       _gtk_plug_windowing_unmap_toplevel (plug);
 657
 658       gdk_synthesize_window_state (widget->window,
 659                                    0,
 660                                    GDK_WINDOW_STATE_WITHDRAWN);
 661     }
 662   else
 663     GTK_WIDGET_CLASS (bin_class)->unmap (widget);
 664 }
 665
 666 static void
 667 gtk_plug_size_allocate (GtkWidget     *widget,
 668                         GtkAllocation *allocation)
 669 {
 670   if (GTK_WIDGET_TOPLEVEL (widget))
 671     GTK_WIDGET_CLASS (gtk_plug_parent_class)->size_allocate (widget, allocation);
 672   else
 673     {
 674       GtkBin *bin = GTK_BIN (widget);
 675
 676       widget->allocation = *allocation;
 677
 678       if (GTK_WIDGET_REALIZED (widget))
 679         gdk_window_move_resize (widget->window,
 680                                 allocation->x, allocation->y,
 681                                 allocation->width, allocation->height);
 682
 683       if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 684         {
 685           GtkAllocation child_allocation;
 686
 687           child_allocation.x = child_allocation.y = GTK_CONTAINER (widget)->border_width;
 688           child_allocation.width =
 689             MAX (1, (gint)allocation->width - child_allocation.x * 2);
 690           child_allocation.height =
 691             MAX (1, (gint)allocation->height - child_allocation.y * 2);
 692
 693           gtk_widget_size_allocate (bin->child, &child_allocation);
 694         }
 695
 696     }
 697 }
 698
 699 static gboolean
 700 gtk_plug_key_press_event (GtkWidget   *widget,
 701                           GdkEventKey *event)
 702 {
 703   if (GTK_WIDGET_TOPLEVEL (widget))
 704     return GTK_WIDGET_CLASS (gtk_plug_parent_class)->key_press_event (widget, event);
 705   else
 706     return FALSE;
 707 }
 708
 709 static gboolean
 710 gtk_plug_focus_event (GtkWidget      *widget,
 711                       GdkEventFocus  *event)
 712 {
 713   /* We eat focus-in events and focus-out events, since they
 714    * can be generated by something like a keyboard grab on
 715    * a child of the plug.
 716    */
 717   return FALSE;
 718 }
 719
 720 static void
 721 gtk_plug_set_focus (GtkWindow *window,
 722                     GtkWidget *focus)
 723 {
 724   GtkPlug *plug = GTK_PLUG (window);
 725
 726   GTK_WINDOW_CLASS (gtk_plug_parent_class)->set_focus (window, focus);
 727
 728   /* Ask for focus from embedder
 729    */
 730
 731   if (focus && !window->has_toplevel_focus)
 732     _gtk_plug_windowing_set_focus (plug);
 733 }
 734
 735 static guint
 736 grabbed_key_hash (gconstpointer a)
 737 {
 738   const GrabbedKey *key = a;
 739   guint h;
 740
 741   h = key->accelerator_key << 16;
 742   h ^= key->accelerator_key >> 16;
 743   h ^= key->accelerator_mods;
 744
 745   return h;
 746 }
 747
 748 static gboolean
 749 grabbed_key_equal (gconstpointer a, gconstpointer b)
 750 {
 751   const GrabbedKey *keya = a;
 752   const GrabbedKey *keyb = b;
 753
 754   return (keya->accelerator_key == keyb->accelerator_key &&
 755           keya->accelerator_mods == keyb->accelerator_mods);
 756 }
 757
 758 static void
 759 add_grabbed_key (gpointer key, gpointer val, gpointer data)
 760 {
 761   GrabbedKey *grabbed_key = key;
 762   GtkPlug *plug = data;
 763
 764   if (!plug->grabbed_keys ||
 765       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 766     {
 767       _gtk_plug_windowing_add_grabbed_key (plug,
 768                                            grabbed_key->accelerator_key,
 769                                            grabbed_key->accelerator_mods);
 770     }
 771 }
 772
 773 static void
 774 add_grabbed_key_always (gpointer key,
 775                         gpointer val,
 776                         gpointer data)
 777 {
 778   GrabbedKey *grabbed_key = key;
 779   GtkPlug *plug = data;
 780
 781   _gtk_plug_windowing_add_grabbed_key (plug,
 782                                        grabbed_key->accelerator_key,
 783                                        grabbed_key->accelerator_mods);
 784 }
 785
 786 /**
 787  * _gtk_plug_add_all_grabbed_keys:
 788  *
 789  * @plug: a #GtkPlug
 790  *
 791  * Calls _gtk_plug_windowing_add_grabbed_key() on all the grabbed keys
 792  * in the @plug.
 793  */
 794 void
 795 _gtk_plug_add_all_grabbed_keys (GtkPlug *plug)
 796 {
 797   if (plug->grabbed_keys)
 798     g_hash_table_foreach (plug->grabbed_keys, add_grabbed_key_always, plug);
 799 }
 800
 801 static void
 802 remove_grabbed_key (gpointer key, gpointer val, gpointer data)
 803 {
 804   GrabbedKey *grabbed_key = key;
 805   GtkPlug *plug = data;
 806
 807   if (!plug->grabbed_keys ||
 808       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 809     {
 810       _gtk_plug_windowing_remove_grabbed_key (plug,
 811                                               grabbed_key->accelerator_key,
 812                                               grabbed_key->accelerator_mods);
 813     }
 814 }
 815
 816 static void
 817 keys_foreach (GtkWindow      *window,
 818               guint           keyval,
 819               GdkModifierType modifiers,
 820               gboolean        is_mnemonic,
 821               gpointer        data)
 822 {
 823   GHashTable *new_grabbed_keys = data;
 824   GrabbedKey *key = g_slice_new (GrabbedKey);
 825
 826   key->accelerator_key = keyval;
 827   key->accelerator_mods = modifiers;
 828
 829   g_hash_table_replace (new_grabbed_keys, key, key);
 830 }
 831
 832 static void
 833 grabbed_key_free (gpointer data)
 834 {
 835   g_slice_free (GrabbedKey, data);
 836 }
 837
 838 static void
 839 gtk_plug_keys_changed (GtkWindow *window)
 840 {
 841   GHashTable *new_grabbed_keys, *old_grabbed_keys;
 842   GtkPlug *plug = GTK_PLUG (window);
 843
 844   new_grabbed_keys = g_hash_table_new_full (grabbed_key_hash, grabbed_key_equal, (GDestroyNotify)grabbed_key_free, NULL);
 845   _gtk_window_keys_foreach (window, keys_foreach, new_grabbed_keys);
 846
 847   if (plug->socket_window)
 848     g_hash_table_foreach (new_grabbed_keys, add_grabbed_key, plug);
 849
 850   old_grabbed_keys = plug->grabbed_keys;
 851   plug->grabbed_keys = new_grabbed_keys;
 852
 853   if (old_grabbed_keys)
 854     {
 855       if (plug->socket_window)
 856         g_hash_table_foreach (old_grabbed_keys, remove_grabbed_key, plug);
 857       g_hash_table_destroy (old_grabbed_keys);
 858     }
 859 }
 860
 861 static gboolean
 862 gtk_plug_focus (GtkWidget        *widget,
 863                 GtkDirectionType  direction)
 864 {
 865   GtkBin *bin = GTK_BIN (widget);
 866   GtkPlug *plug = GTK_PLUG (widget);
 867   GtkWindow *window = GTK_WINDOW (widget);
 868   GtkContainer *container = GTK_CONTAINER (widget);
 869   GtkWidget *old_focus_child = container->focus_child;
 870   GtkWidget *parent;
 871
 872   /* We override GtkWindow's behavior, since we don't want wrapping here.
 873    */
 874   if (old_focus_child)
 875     {
 876       if (gtk_widget_child_focus (old_focus_child, direction))
 877         return TRUE;
 878
 879       if (window->focus_widget)
 880         {
 881           /* Wrapped off the end, clear the focus setting for the toplevel */
 882           parent = window->focus_widget->parent;
 883           while (parent)
 884             {
 885               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 886               parent = GTK_WIDGET (parent)->parent;
 887             }
 888
 889           gtk_window_set_focus (GTK_WINDOW (container), NULL);
 890         }
 891     }
 892   else
 893     {
 894       /* Try to focus the first widget in the window */
 895       if (bin->child && gtk_widget_child_focus (bin->child, direction))
 896         return TRUE;
 897     }
 898
 899   if (!GTK_CONTAINER (window)->focus_child)
 900     _gtk_plug_windowing_focus_to_parent (plug, direction);
 901
 902   return FALSE;
 903 }
 904
 905 static void
 906 gtk_plug_check_resize (GtkContainer *container)
 907 {
 908   if (GTK_WIDGET_TOPLEVEL (container))
 909     GTK_CONTAINER_CLASS (gtk_plug_parent_class)->check_resize (container);
 910   else
 911     GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
 912 }
 913
 914 /**
 915  * _gtk_plug_handle_modality_on:
 916  *
 917  * @plug: a #GtkPlug
 918  *
 919  * Called from the GtkPlug backend when the corresponding socket has
 920  * told the plug that it modality has toggled on.
 921  */
 922 void
 923 _gtk_plug_handle_modality_on (GtkPlug *plug)
 924 {
 925   if (!plug->modality_window)
 926     {
 927       plug->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
 928       gtk_window_set_screen (GTK_WINDOW (plug->modality_window),
 929                              gtk_widget_get_screen (GTK_WIDGET (plug)));
 930       gtk_widget_realize (plug->modality_window);
 931       gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug->modality_window));
 932       gtk_grab_add (plug->modality_window);
 933     }
 934 }
 935
 936 /**
 937  * _gtk_plug_handle_modality_off:
 938  *
 939  * @plug: a #GtkPlug
 940  *
 941  * Called from the GtkPlug backend when the corresponding socket has
 942  * told the plug that it modality has toggled off.
 943  */
 944 void
 945 _gtk_plug_handle_modality_off (GtkPlug *plug)
 946 {
 947   if (plug->modality_window)
 948     {
 949       gtk_widget_destroy (plug->modality_window);
 950       plug->modality_window = NULL;
 951     }
 952 }
 953
 954 /**
 955  * _gtk_plug_focus_first_last:
 956  *
 957  * @plug: a #GtkPlug
 958  * @direction: a direction
 959  *
 960  * Called from the GtkPlug backend when the corresponding socket has
 961  * told the plug that it has received the focus.
 962  */
 963 void
 964 _gtk_plug_focus_first_last (GtkPlug          *plug,
 965                             GtkDirectionType  direction)
 966 {
 967   GtkWindow *window = GTK_WINDOW (plug);
 968   GtkWidget *parent;
 969
 970   if (window->focus_widget)
 971     {
 972       parent = window->focus_widget->parent;
 973       while (parent)
 974         {
 975           gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 976           parent = GTK_WIDGET (parent)->parent;
 977         }
 978
 979       gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 980     }
 981
 982   gtk_widget_child_focus (GTK_WIDGET (plug), direction);
 983 }
 984
 985 #define __GTK_PLUG_C__
 986 #include "gtkaliasdef.c"