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