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