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