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 /**
  38  * SECTION:gtkplug
  39  * @Short_description: Toplevel for embedding into other processes
  40  * @Title: GtkPlug
  41  * @See_also: #GtkSocket
  42  *
  43  * Together with #GtkSocket, #GtkPlug provides the ability
  44  * to embed widgets from one process into another process
  45  * in a fashion that is transparent to the user. One
  46  * process creates a #GtkSocket widget and passes the
  47  * ID of that widget's window to the other process,
  48  * which then creates a #GtkPlug with that window ID.
  49  * Any widgets contained in the #GtkPlug then will appear
  50  * inside the first application's window.
  51  *
  52  * <note>
  53  * The #GtkPlug and #GtkSocket widgets are currently not available
  54  * on all platforms supported by GTK+.
  55  * </note>
  56  */
  57
  58 static void            gtk_plug_get_property          (GObject     *object,
  59                                                        guint        prop_id,
  60                                                        GValue      *value,
  61                                                        GParamSpec  *pspec);
  62 static void            gtk_plug_finalize              (GObject          *object);
  63 static void            gtk_plug_realize               (GtkWidget        *widget);
  64 static void            gtk_plug_unrealize             (GtkWidget        *widget);
  65 static void            gtk_plug_show                  (GtkWidget        *widget);
  66 static void            gtk_plug_hide                  (GtkWidget        *widget);
  67 static void            gtk_plug_map                   (GtkWidget        *widget);
  68 static void            gtk_plug_unmap                 (GtkWidget        *widget);
  69 static void            gtk_plug_size_allocate         (GtkWidget        *widget,
  70                                                        GtkAllocation    *allocation);
  71 static gboolean        gtk_plug_key_press_event       (GtkWidget        *widget,
  72                                                        GdkEventKey      *event);
  73 static gboolean        gtk_plug_focus_event           (GtkWidget        *widget,
  74                                                        GdkEventFocus    *event);
  75 static void            gtk_plug_set_focus             (GtkWindow        *window,
  76                                                        GtkWidget        *focus);
  77 static gboolean        gtk_plug_focus                 (GtkWidget        *widget,
  78                                                        GtkDirectionType  direction);
  79 static void            gtk_plug_check_resize          (GtkContainer     *container);
  80 static void            gtk_plug_keys_changed          (GtkWindow        *window);
  81
  82 static GtkBinClass *bin_class = NULL;
  83
  84 typedef struct
  85 {
  86   guint                  accelerator_key;
  87   GdkModifierType        accelerator_mods;
  88 } GrabbedKey;
  89
  90 enum {
  91   PROP_0,
  92   PROP_EMBEDDED,
  93   PROP_SOCKET_WINDOW
  94 };
  95
  96 enum {
  97   EMBEDDED,
  98   LAST_SIGNAL
  99 };
 100
 101 static guint plug_signals[LAST_SIGNAL] = { 0 };
 102
 103 G_DEFINE_TYPE (GtkPlug, gtk_plug, GTK_TYPE_WINDOW)
 104
 105 static void
 106 gtk_plug_get_property (GObject    *object,
 107                        guint       prop_id,
 108                        GValue     *value,
 109                        GParamSpec *pspec)
 110 {
 111   GtkPlug *plug = GTK_PLUG (object);
 112
 113   switch (prop_id)
 114     {
 115     case PROP_EMBEDDED:
 116       g_value_set_boolean (value, plug->socket_window != NULL);
 117       break;
 118     case PROP_SOCKET_WINDOW:
 119       g_value_set_object (value, plug->socket_window);
 120       break;
 121     default:
 122       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 123       break;
 124     }
 125 }
 126
 127 static void
 128 gtk_plug_class_init (GtkPlugClass *class)
 129 {
 130   GObjectClass *gobject_class = (GObjectClass *)class;
 131   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
 132   GtkWindowClass *window_class = (GtkWindowClass *)class;
 133   GtkContainerClass *container_class = (GtkContainerClass *)class;
 134
 135   bin_class = g_type_class_peek (GTK_TYPE_BIN);
 136
 137   gobject_class->get_property = gtk_plug_get_property;
 138   gobject_class->finalize = gtk_plug_finalize;
 139
 140   widget_class->realize = gtk_plug_realize;
 141   widget_class->unrealize = gtk_plug_unrealize;
 142   widget_class->key_press_event = gtk_plug_key_press_event;
 143   widget_class->focus_in_event = gtk_plug_focus_event;
 144   widget_class->focus_out_event = gtk_plug_focus_event;
 145
 146   widget_class->show = gtk_plug_show;
 147   widget_class->hide = gtk_plug_hide;
 148   widget_class->map = gtk_plug_map;
 149   widget_class->unmap = gtk_plug_unmap;
 150   widget_class->size_allocate = gtk_plug_size_allocate;
 151
 152   widget_class->focus = gtk_plug_focus;
 153
 154   container_class->check_resize = gtk_plug_check_resize;
 155
 156   window_class->set_focus = gtk_plug_set_focus;
 157   window_class->keys_changed = gtk_plug_keys_changed;
 158
 159   /**
 160    * GtkPlug:embedded:
 161    *
 162    * %TRUE if the plug is embedded in a socket.
 163    *
 164    * Since: 2.12
 165    */
 166   g_object_class_install_property (gobject_class,
 167                                    PROP_EMBEDDED,
 168                                    g_param_spec_boolean ("embedded",
 169                                                          P_("Embedded"),
 170                                                          P_("Whether or not the plug is embedded"),
 171                                                          FALSE,
 172                                                          GTK_PARAM_READABLE));
 173
 174   /**
 175    * GtkPlug:socket-window:
 176    *
 177    * The window of the socket the plug is embedded in.
 178    *
 179    * Since: 2.14
 180    */
 181   g_object_class_install_property (gobject_class,
 182                                    PROP_SOCKET_WINDOW,
 183                                    g_param_spec_object ("socket-window",
 184                                                         P_("Socket Window"),
 185                                                         P_("The window of the socket the plug is embedded in"),
 186                                                         GDK_TYPE_WINDOW,
 187                                                         GTK_PARAM_READABLE));
 188
 189   /**
 190    * GtkPlug::embedded:
 191    * @plug: the object on which the signal was emitted
 192    *
 193    * Gets emitted when the plug becomes embedded in a socket.
 194    */
 195   plug_signals[EMBEDDED] =
 196     g_signal_new (I_("embedded"),
 197                   G_OBJECT_CLASS_TYPE (class),
 198                   G_SIGNAL_RUN_LAST,
 199                   G_STRUCT_OFFSET (GtkPlugClass, embedded),
 200                   NULL, NULL,
 201                   _gtk_marshal_VOID__VOID,
 202                   G_TYPE_NONE, 0);
 203 }
 204
 205 static void
 206 gtk_plug_init (GtkPlug *plug)
 207 {
 208   GtkWindow *window;
 209
 210   window = GTK_WINDOW (plug);
 211
 212   window->type = GTK_WINDOW_TOPLEVEL;
 213 }
 214
 215 static void
 216 gtk_plug_set_is_child (GtkPlug  *plug,
 217                        gboolean  is_child)
 218 {
 219   g_assert (!GTK_WIDGET (plug)->parent);
 220
 221   if (is_child)
 222     {
 223       if (plug->modality_window)
 224         _gtk_plug_handle_modality_off (plug);
 225
 226       if (plug->modality_group)
 227         {
 228           gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
 229           g_object_unref (plug->modality_group);
 230           plug->modality_group = NULL;
 231         }
 232
 233       /* As a toplevel, the MAPPED flag doesn't correspond
 234        * to whether the widget->window is mapped; we unmap
 235        * here, but don't bother remapping -- we will get mapped
 236        * by gtk_widget_set_parent ().
 237        */
 238       if (gtk_widget_get_mapped (GTK_WIDGET (plug)))
 239         gtk_widget_unmap (GTK_WIDGET (plug));
 240
 241       _gtk_window_set_is_toplevel (GTK_WINDOW (plug), FALSE);
 242       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_PARENT);
 243
 244       _gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), GTK_WIDGET (plug));
 245     }
 246   else
 247     {
 248       if (GTK_WINDOW (plug)->focus_widget)
 249         gtk_window_set_focus (GTK_WINDOW (plug), NULL);
 250       if (GTK_WINDOW (plug)->default_widget)
 251         gtk_window_set_default (GTK_WINDOW (plug), NULL);
 252
 253       plug->modality_group = gtk_window_group_new ();
 254       gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug));
 255
 256       _gtk_window_set_is_toplevel (GTK_WINDOW (plug), TRUE);
 257       gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_QUEUE);
 258
 259       _gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), NULL);
 260     }
 261 }
 262
 263 /**
 264  * gtk_plug_get_id:
 265  * @plug: a #GtkPlug.
 266  *
 267  * Gets the window ID of a #GtkPlug widget, which can then
 268  * be used to embed this window inside another window, for
 269  * instance with gtk_socket_add_id().
 270  *
 271  * Return value: the window ID for the plug
 272  **/
 273 GdkNativeWindow
 274 gtk_plug_get_id (GtkPlug *plug)
 275 {
 276   g_return_val_if_fail (GTK_IS_PLUG (plug), 0);
 277
 278   if (!gtk_widget_get_realized (GTK_WIDGET (plug)))
 279     gtk_widget_realize (GTK_WIDGET (plug));
 280
 281   return _gtk_plug_windowing_get_id (plug);
 282 }
 283
 284 /**
 285  * gtk_plug_get_embedded:
 286  * @plug: a #GtkPlug
 287  *
 288  * Determines whether the plug is embedded in a socket.
 289  *
 290  * Return value: %TRUE if the plug is embedded in a socket
 291  *
 292  * Since: 2.14
 293  **/
 294 gboolean
 295 gtk_plug_get_embedded (GtkPlug *plug)
 296 {
 297   g_return_val_if_fail (GTK_IS_PLUG (plug), FALSE);
 298
 299   return plug->socket_window != NULL;
 300 }
 301
 302 /**
 303  * gtk_plug_get_socket_window:
 304  * @plug: a #GtkPlug
 305  *
 306  * Retrieves the socket the plug is embedded in.
 307  *
 308  * Return value: the window of the socket, or %NULL
 309  *
 310  * Since: 2.14
 311  **/
 312 GdkWindow *
 313 gtk_plug_get_socket_window (GtkPlug *plug)
 314 {
 315   g_return_val_if_fail (GTK_IS_PLUG (plug), NULL);
 316
 317   return plug->socket_window;
 318 }
 319
 320 /**
 321  * _gtk_plug_add_to_socket:
 322  * @plug: a #GtkPlug
 323  * @socket_: a #GtkSocket
 324  *
 325  * Adds a plug to a socket within the same application.
 326  **/
 327 void
 328 _gtk_plug_add_to_socket (GtkPlug   *plug,
 329                          GtkSocket *socket_)
 330 {
 331   GtkWidget *widget;
 332   gint w, h;
 333
 334   g_return_if_fail (GTK_IS_PLUG (plug));
 335   g_return_if_fail (GTK_IS_SOCKET (socket_));
 336   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (socket_)));
 337
 338   widget = GTK_WIDGET (plug);
 339
 340   gtk_plug_set_is_child (plug, TRUE);
 341   plug->same_app = TRUE;
 342   socket_->same_app = TRUE;
 343   socket_->plug_widget = widget;
 344
 345   plug->socket_window = GTK_WIDGET (socket_)->window;
 346   g_object_ref (plug->socket_window);
 347   g_signal_emit (plug, plug_signals[EMBEDDED], 0);
 348   g_object_notify (G_OBJECT (plug), "embedded");
 349
 350   if (gtk_widget_get_realized (widget))
 351     {
 352       gdk_drawable_get_size (GDK_DRAWABLE (widget->window), &w, &h);
 353       gdk_window_reparent (widget->window, plug->socket_window, -w, -h);
 354     }
 355
 356   gtk_widget_set_parent (widget, GTK_WIDGET (socket_));
 357
 358   g_signal_emit_by_name (socket_, "plug-added");
 359 }
 360
 361 /**
 362  * _gtk_plug_send_delete_event:
 363  * @widget: a #GtkWidget
 364  *
 365  * Send a GDK_DELETE event to the @widget and destroy it if
 366  * necessary. Internal GTK function, called from this file or the
 367  * backend-specific GtkPlug implementation.
 368  */
 369 void
 370 _gtk_plug_send_delete_event (GtkWidget *widget)
 371 {
 372   GdkEvent *event = gdk_event_new (GDK_DELETE);
 373
 374   event->any.window = g_object_ref (widget->window);
 375   event->any.send_event = FALSE;
 376
 377   g_object_ref (widget);
 378
 379   if (!gtk_widget_event (widget, event))
 380     gtk_widget_destroy (widget);
 381
 382   g_object_unref (widget);
 383
 384   gdk_event_free (event);
 385 }
 386
 387 /**
 388  * _gtk_plug_remove_from_socket:
 389  * @plug: a #GtkPlug
 390  * @socket_: a #GtkSocket
 391  *
 392  * Removes a plug from a socket within the same application.
 393  **/
 394 void
 395 _gtk_plug_remove_from_socket (GtkPlug   *plug,
 396                               GtkSocket *socket_)
 397 {
 398   GtkWidget *widget;
 399   gboolean result;
 400   gboolean widget_was_visible;
 401
 402   g_return_if_fail (GTK_IS_PLUG (plug));
 403   g_return_if_fail (GTK_IS_SOCKET (socket_));
 404   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (plug)));
 405
 406   widget = GTK_WIDGET (plug);
 407
 408   if (GTK_WIDGET_IN_REPARENT (widget))
 409     return;
 410
 411   g_object_ref (plug);
 412   g_object_ref (socket_);
 413
 414   widget_was_visible = gtk_widget_get_visible (widget);
 415
 416   gdk_window_hide (widget->window);
 417   GTK_PRIVATE_SET_FLAG (plug, GTK_IN_REPARENT);
 418   gdk_window_reparent (widget->window,
 419                        gtk_widget_get_root_window (widget),
 420                        0, 0);
 421   gtk_widget_unparent (GTK_WIDGET (plug));
 422   GTK_PRIVATE_UNSET_FLAG (plug, GTK_IN_REPARENT);
 423
 424   socket_->plug_widget = NULL;
 425   if (socket_->plug_window != NULL)
 426     {
 427       g_object_unref (socket_->plug_window);
 428       socket_->plug_window = NULL;
 429     }
 430
 431   socket_->same_app = FALSE;
 432
 433   plug->same_app = FALSE;
 434   if (plug->socket_window != NULL)
 435     {
 436       g_object_unref (plug->socket_window);
 437       plug->socket_window = NULL;
 438     }
 439   gtk_plug_set_is_child (plug, FALSE);
 440
 441   g_signal_emit_by_name (socket_, "plug-removed", &result);
 442   if (!result)
 443     gtk_widget_destroy (GTK_WIDGET (socket_));
 444
 445   if (widget->window)
 446     _gtk_plug_send_delete_event (widget);
 447
 448   g_object_unref (plug);
 449
 450   if (widget_was_visible && gtk_widget_get_visible (GTK_WIDGET (socket_)))
 451     gtk_widget_queue_resize (GTK_WIDGET (socket_));
 452
 453   g_object_unref (socket_);
 454 }
 455
 456 /**
 457  * gtk_plug_construct:
 458  * @plug: a #GtkPlug.
 459  * @socket_id: the XID of the socket's window.
 460  *
 461  * Finish the initialization of @plug for a given #GtkSocket identified by
 462  * @socket_id. This function will generally only be used by classes deriving from #GtkPlug.
 463  **/
 464 void
 465 gtk_plug_construct (GtkPlug         *plug,
 466                     GdkNativeWindow  socket_id)
 467 {
 468   gtk_plug_construct_for_display (plug, gdk_display_get_default (), socket_id);
 469 }
 470
 471 /**
 472  * gtk_plug_construct_for_display:
 473  * @plug: a #GtkPlug.
 474  * @display: the #GdkDisplay associated with @socket_id's
 475  *           #GtkSocket.
 476  * @socket_id: the XID of the socket's window.
 477  *
 478  * Finish the initialization of @plug for a given #GtkSocket identified by
 479  * @socket_id which is currently displayed on @display.
 480  * This function will generally only be used by classes deriving from #GtkPlug.
 481  *
 482  * Since: 2.2
 483  **/
 484 void
 485 gtk_plug_construct_for_display (GtkPlug         *plug,
 486                                 GdkDisplay      *display,
 487                                 GdkNativeWindow  socket_id)
 488 {
 489   if (socket_id)
 490     {
 491       gpointer user_data = NULL;
 492
 493       plug->socket_window = gdk_window_lookup_for_display (display, socket_id);
 494       if (plug->socket_window)
 495         {
 496           gdk_window_get_user_data (plug->socket_window, &user_data);
 497
 498           if (user_data)
 499             {
 500               if (GTK_IS_SOCKET (user_data))
 501                 _gtk_plug_add_to_socket (plug, user_data);
 502               else
 503                 {
 504                   g_warning (G_STRLOC "Can't create GtkPlug as child of non-GtkSocket");
 505                   plug->socket_window = NULL;
 506                 }
 507             }
 508           else
 509             g_object_ref (plug->socket_window);
 510         }
 511       else
 512         plug->socket_window = gdk_window_foreign_new_for_display (display, socket_id);
 513
 514       if (plug->socket_window) {
 515         g_signal_emit (plug, plug_signals[EMBEDDED], 0);
 516
 517         g_object_notify (G_OBJECT (plug), "embedded");
 518       }
 519     }
 520 }
 521
 522 /**
 523  * gtk_plug_new:
 524  * @socket_id:  the window ID of the socket, or 0.
 525  *
 526  * Creates a new plug widget inside the #GtkSocket identified
 527  * by @socket_id. If @socket_id is 0, the plug is left "unplugged" and
 528  * can later be plugged into a #GtkSocket by  gtk_socket_add_id().
 529  *
 530  * Return value: the new #GtkPlug widget.
 531  **/
 532 GtkWidget*
 533 gtk_plug_new (GdkNativeWindow socket_id)
 534 {
 535   return gtk_plug_new_for_display (gdk_display_get_default (), socket_id);
 536 }
 537
 538 /**
 539  * gtk_plug_new_for_display:
 540  * @display : the #GdkDisplay on which @socket_id is displayed
 541  * @socket_id: the XID of the socket's window.
 542  *
 543  * Create a new plug widget inside the #GtkSocket identified by socket_id.
 544  *
 545  * Return value: the new #GtkPlug widget.
 546  *
 547  * Since: 2.2
 548  */
 549 GtkWidget*
 550 gtk_plug_new_for_display (GdkDisplay      *display,
 551                           GdkNativeWindow  socket_id)
 552 {
 553   GtkPlug *plug;
 554
 555   plug = g_object_new (GTK_TYPE_PLUG, NULL);
 556   gtk_plug_construct_for_display (plug, display, socket_id);
 557   return GTK_WIDGET (plug);
 558 }
 559
 560 static void
 561 gtk_plug_finalize (GObject *object)
 562 {
 563   GtkPlug *plug = GTK_PLUG (object);
 564
 565   if (plug->grabbed_keys)
 566     {
 567       g_hash_table_destroy (plug->grabbed_keys);
 568       plug->grabbed_keys = NULL;
 569     }
 570
 571   G_OBJECT_CLASS (gtk_plug_parent_class)->finalize (object);
 572 }
 573
 574 static void
 575 gtk_plug_unrealize (GtkWidget *widget)
 576 {
 577   GtkPlug *plug = GTK_PLUG (widget);
 578
 579   if (plug->socket_window != NULL)
 580     {
 581       gdk_window_set_user_data (plug->socket_window, NULL);
 582       g_object_unref (plug->socket_window);
 583       plug->socket_window = NULL;
 584
 585       g_object_notify (G_OBJECT (widget), "embedded");
 586     }
 587
 588   if (!plug->same_app)
 589     {
 590       if (plug->modality_window)
 591         _gtk_plug_handle_modality_off (plug);
 592
 593       gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
 594       g_object_unref (plug->modality_group);
 595     }
 596
 597   GTK_WIDGET_CLASS (gtk_plug_parent_class)->unrealize (widget);
 598 }
 599
 600 static void
 601 gtk_plug_realize (GtkWidget *widget)
 602 {
 603   GtkWindow *window = GTK_WINDOW (widget);
 604   GtkPlug *plug = GTK_PLUG (widget);
 605   GdkWindowAttr attributes;
 606   gint attributes_mask;
 607
 608   gtk_widget_set_realized (widget, TRUE);
 609
 610   attributes.window_type = GDK_WINDOW_CHILD;    /* XXX GDK_WINDOW_PLUG ? */
 611   attributes.title = window->title;
 612   attributes.wmclass_name = window->wmclass_name;
 613   attributes.wmclass_class = window->wmclass_class;
 614   attributes.width = widget->allocation.width;
 615   attributes.height = widget->allocation.height;
 616   attributes.wclass = GDK_INPUT_OUTPUT;
 617
 618   /* this isn't right - we should match our parent's visual/colormap.
 619    * though that will require handling "foreign" colormaps */
 620   attributes.visual = gtk_widget_get_visual (widget);
 621   attributes.colormap = gtk_widget_get_colormap (widget);
 622   attributes.event_mask = gtk_widget_get_events (widget);
 623   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 624                             GDK_KEY_PRESS_MASK |
 625                             GDK_KEY_RELEASE_MASK |
 626                             GDK_ENTER_NOTIFY_MASK |
 627                             GDK_LEAVE_NOTIFY_MASK |
 628                             GDK_STRUCTURE_MASK);
 629
 630   attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
 631   attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
 632   attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
 633
 634   if (gtk_widget_is_toplevel (widget))
 635     {
 636       attributes.window_type = GDK_WINDOW_TOPLEVEL;
 637
 638       gdk_error_trap_push ();
 639       if (plug->socket_window)
 640         widget->window = gdk_window_new (plug->socket_window,
 641                                          &attributes, attributes_mask);
 642       else /* If it's a passive plug, we use the root window */
 643         widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
 644                                          &attributes, attributes_mask);
 645
 646       gdk_display_sync (gtk_widget_get_display (widget));
 647       if (gdk_error_trap_pop ()) /* Uh-oh */
 648         {
 649           gdk_error_trap_push ();
 650           gdk_window_destroy (widget->window);
 651           gdk_flush ();
 652           gdk_error_trap_pop ();
 653           widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
 654                                            &attributes, attributes_mask);
 655         }
 656
 657       gdk_window_add_filter (widget->window,
 658                              _gtk_plug_windowing_filter_func,
 659                              widget);
 660
 661       plug->modality_group = gtk_window_group_new ();
 662       gtk_window_group_add_window (plug->modality_group, window);
 663
 664       _gtk_plug_windowing_realize_toplevel (plug);
 665     }
 666   else
 667     widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 668                                      &attributes, attributes_mask);
 669
 670   gdk_window_set_user_data (widget->window, window);
 671
 672   widget->style = gtk_style_attach (widget->style, widget->window);
 673   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 674
 675   gdk_window_enable_synchronized_configure (widget->window);
 676 }
 677
 678 static void
 679 gtk_plug_show (GtkWidget *widget)
 680 {
 681   if (gtk_widget_is_toplevel (widget))
 682     GTK_WIDGET_CLASS (gtk_plug_parent_class)->show (widget);
 683   else
 684     GTK_WIDGET_CLASS (bin_class)->show (widget);
 685 }
 686
 687 static void
 688 gtk_plug_hide (GtkWidget *widget)
 689 {
 690   if (gtk_widget_is_toplevel (widget))
 691     GTK_WIDGET_CLASS (gtk_plug_parent_class)->hide (widget);
 692   else
 693     GTK_WIDGET_CLASS (bin_class)->hide (widget);
 694 }
 695
 696 /* From gdkinternals.h */
 697 void gdk_synthesize_window_state (GdkWindow     *window,
 698                                   GdkWindowState unset_flags,
 699                                   GdkWindowState set_flags);
 700
 701 static void
 702 gtk_plug_map (GtkWidget *widget)
 703 {
 704   if (gtk_widget_is_toplevel (widget))
 705     {
 706       GtkBin *bin = GTK_BIN (widget);
 707       GtkPlug *plug = GTK_PLUG (widget);
 708       GtkWidget *child;
 709
 710       gtk_widget_set_mapped (widget, TRUE);
 711
 712       child = gtk_bin_get_child (bin);
 713       if (child != NULL &&
 714           gtk_widget_get_visible (child) &&
 715           !gtk_widget_get_mapped (child))
 716         gtk_widget_map (child);
 717
 718       _gtk_plug_windowing_map_toplevel (plug);
 719
 720       gdk_synthesize_window_state (widget->window,
 721                                    GDK_WINDOW_STATE_WITHDRAWN,
 722                                    0);
 723     }
 724   else
 725     GTK_WIDGET_CLASS (bin_class)->map (widget);
 726 }
 727
 728 static void
 729 gtk_plug_unmap (GtkWidget *widget)
 730 {
 731   if (gtk_widget_is_toplevel (widget))
 732     {
 733       GtkPlug *plug = GTK_PLUG (widget);
 734
 735       gtk_widget_set_mapped (widget, FALSE);
 736
 737       gdk_window_hide (widget->window);
 738
 739       _gtk_plug_windowing_unmap_toplevel (plug);
 740
 741       gdk_synthesize_window_state (widget->window,
 742                                    0,
 743                                    GDK_WINDOW_STATE_WITHDRAWN);
 744     }
 745   else
 746     GTK_WIDGET_CLASS (bin_class)->unmap (widget);
 747 }
 748
 749 static void
 750 gtk_plug_size_allocate (GtkWidget     *widget,
 751                         GtkAllocation *allocation)
 752 {
 753   GtkWidget *child;
 754
 755   if (gtk_widget_is_toplevel (widget))
 756     GTK_WIDGET_CLASS (gtk_plug_parent_class)->size_allocate (widget, allocation);
 757   else
 758     {
 759       GtkBin *bin = GTK_BIN (widget);
 760
 761       widget->allocation = *allocation;
 762
 763       if (gtk_widget_get_realized (widget))
 764         gdk_window_move_resize (widget->window,
 765                                 allocation->x, allocation->y,
 766                                 allocation->width, allocation->height);
 767
 768       child = gtk_bin_get_child (bin);
 769
 770       if (child != NULL && gtk_widget_get_visible (child))
 771         {
 772           GtkAllocation child_allocation;
 773
 774           child_allocation.x = child_allocation.y = gtk_container_get_border_width (GTK_CONTAINER (widget));
 775           child_allocation.width =
 776             MAX (1, (gint)allocation->width - child_allocation.x * 2);
 777           child_allocation.height =
 778             MAX (1, (gint)allocation->height - child_allocation.y * 2);
 779
 780           gtk_widget_size_allocate (child, &child_allocation);
 781         }
 782
 783     }
 784 }
 785
 786 static gboolean
 787 gtk_plug_key_press_event (GtkWidget   *widget,
 788                           GdkEventKey *event)
 789 {
 790   if (gtk_widget_is_toplevel (widget))
 791     return GTK_WIDGET_CLASS (gtk_plug_parent_class)->key_press_event (widget, event);
 792   else
 793     return FALSE;
 794 }
 795
 796 static gboolean
 797 gtk_plug_focus_event (GtkWidget      *widget,
 798                       GdkEventFocus  *event)
 799 {
 800   /* We eat focus-in events and focus-out events, since they
 801    * can be generated by something like a keyboard grab on
 802    * a child of the plug.
 803    */
 804   return FALSE;
 805 }
 806
 807 static void
 808 gtk_plug_set_focus (GtkWindow *window,
 809                     GtkWidget *focus)
 810 {
 811   GtkPlug *plug = GTK_PLUG (window);
 812
 813   GTK_WINDOW_CLASS (gtk_plug_parent_class)->set_focus (window, focus);
 814
 815   /* Ask for focus from embedder
 816    */
 817
 818   if (focus && !window->has_toplevel_focus)
 819     _gtk_plug_windowing_set_focus (plug);
 820 }
 821
 822 static guint
 823 grabbed_key_hash (gconstpointer a)
 824 {
 825   const GrabbedKey *key = a;
 826   guint h;
 827
 828   h = key->accelerator_key << 16;
 829   h ^= key->accelerator_key >> 16;
 830   h ^= key->accelerator_mods;
 831
 832   return h;
 833 }
 834
 835 static gboolean
 836 grabbed_key_equal (gconstpointer a, gconstpointer b)
 837 {
 838   const GrabbedKey *keya = a;
 839   const GrabbedKey *keyb = b;
 840
 841   return (keya->accelerator_key == keyb->accelerator_key &&
 842           keya->accelerator_mods == keyb->accelerator_mods);
 843 }
 844
 845 static void
 846 add_grabbed_key (gpointer key, gpointer val, gpointer data)
 847 {
 848   GrabbedKey *grabbed_key = key;
 849   GtkPlug *plug = data;
 850
 851   if (!plug->grabbed_keys ||
 852       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 853     {
 854       _gtk_plug_windowing_add_grabbed_key (plug,
 855                                            grabbed_key->accelerator_key,
 856                                            grabbed_key->accelerator_mods);
 857     }
 858 }
 859
 860 static void
 861 add_grabbed_key_always (gpointer key,
 862                         gpointer val,
 863                         gpointer data)
 864 {
 865   GrabbedKey *grabbed_key = key;
 866   GtkPlug *plug = data;
 867
 868   _gtk_plug_windowing_add_grabbed_key (plug,
 869                                        grabbed_key->accelerator_key,
 870                                        grabbed_key->accelerator_mods);
 871 }
 872
 873 /**
 874  * _gtk_plug_add_all_grabbed_keys:
 875  *
 876  * @plug: a #GtkPlug
 877  *
 878  * Calls _gtk_plug_windowing_add_grabbed_key() on all the grabbed keys
 879  * in the @plug.
 880  */
 881 void
 882 _gtk_plug_add_all_grabbed_keys (GtkPlug *plug)
 883 {
 884   if (plug->grabbed_keys)
 885     g_hash_table_foreach (plug->grabbed_keys, add_grabbed_key_always, plug);
 886 }
 887
 888 static void
 889 remove_grabbed_key (gpointer key, gpointer val, gpointer data)
 890 {
 891   GrabbedKey *grabbed_key = key;
 892   GtkPlug *plug = data;
 893
 894   if (!plug->grabbed_keys ||
 895       !g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
 896     {
 897       _gtk_plug_windowing_remove_grabbed_key (plug,
 898                                               grabbed_key->accelerator_key,
 899                                               grabbed_key->accelerator_mods);
 900     }
 901 }
 902
 903 static void
 904 keys_foreach (GtkWindow      *window,
 905               guint           keyval,
 906               GdkModifierType modifiers,
 907               gboolean        is_mnemonic,
 908               gpointer        data)
 909 {
 910   GHashTable *new_grabbed_keys = data;
 911   GrabbedKey *key = g_slice_new (GrabbedKey);
 912
 913   key->accelerator_key = keyval;
 914   key->accelerator_mods = modifiers;
 915
 916   g_hash_table_replace (new_grabbed_keys, key, key);
 917 }
 918
 919 static void
 920 grabbed_key_free (gpointer data)
 921 {
 922   g_slice_free (GrabbedKey, data);
 923 }
 924
 925 static void
 926 gtk_plug_keys_changed (GtkWindow *window)
 927 {
 928   GHashTable *new_grabbed_keys, *old_grabbed_keys;
 929   GtkPlug *plug = GTK_PLUG (window);
 930
 931   new_grabbed_keys = g_hash_table_new_full (grabbed_key_hash, grabbed_key_equal, (GDestroyNotify)grabbed_key_free, NULL);
 932   _gtk_window_keys_foreach (window, keys_foreach, new_grabbed_keys);
 933
 934   if (plug->socket_window)
 935     g_hash_table_foreach (new_grabbed_keys, add_grabbed_key, plug);
 936
 937   old_grabbed_keys = plug->grabbed_keys;
 938   plug->grabbed_keys = new_grabbed_keys;
 939
 940   if (old_grabbed_keys)
 941     {
 942       if (plug->socket_window)
 943         g_hash_table_foreach (old_grabbed_keys, remove_grabbed_key, plug);
 944       g_hash_table_destroy (old_grabbed_keys);
 945     }
 946 }
 947
 948 static gboolean
 949 gtk_plug_focus (GtkWidget        *widget,
 950                 GtkDirectionType  direction)
 951 {
 952   GtkBin *bin = GTK_BIN (widget);
 953   GtkPlug *plug = GTK_PLUG (widget);
 954   GtkWindow *window = GTK_WINDOW (widget);
 955   GtkContainer *container = GTK_CONTAINER (widget);
 956   GtkWidget *child;
 957   GtkWidget *old_focus_child;
 958   GtkWidget *parent;
 959
 960   old_focus_child = gtk_container_get_focus_child (container);
 961   /* We override GtkWindow's behavior, since we don't want wrapping here.
 962    */
 963   if (old_focus_child)
 964     {
 965       if (gtk_widget_child_focus (old_focus_child, direction))
 966         return TRUE;
 967
 968       if (window->focus_widget)
 969         {
 970           /* Wrapped off the end, clear the focus setting for the toplevel */
 971           parent = window->focus_widget->parent;
 972           while (parent)
 973             {
 974               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 975               parent = GTK_WIDGET (parent)->parent;
 976             }
 977
 978           gtk_window_set_focus (GTK_WINDOW (container), NULL);
 979         }
 980     }
 981   else
 982     {
 983       /* Try to focus the first widget in the window */
 984       child = gtk_bin_get_child (bin);
 985       if (child && gtk_widget_child_focus (child, direction))
 986         return TRUE;
 987     }
 988
 989   if (!gtk_container_get_focus_child (GTK_CONTAINER (window)))
 990     _gtk_plug_windowing_focus_to_parent (plug, direction);
 991
 992   return FALSE;
 993 }
 994
 995 static void
 996 gtk_plug_check_resize (GtkContainer *container)
 997 {
 998   if (gtk_widget_is_toplevel (GTK_WIDGET (container)))
 999     GTK_CONTAINER_CLASS (gtk_plug_parent_class)->check_resize (container);
1000   else
1001     GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
1002 }
1003
1004 /**
1005  * _gtk_plug_handle_modality_on:
1006  *
1007  * @plug: a #GtkPlug
1008  *
1009  * Called from the GtkPlug backend when the corresponding socket has
1010  * told the plug that it modality has toggled on.
1011  */
1012 void
1013 _gtk_plug_handle_modality_on (GtkPlug *plug)
1014 {
1015   if (!plug->modality_window)
1016     {
1017       plug->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
1018       gtk_window_set_screen (GTK_WINDOW (plug->modality_window),
1019                              gtk_widget_get_screen (GTK_WIDGET (plug)));
1020       gtk_widget_realize (plug->modality_window);
1021       gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug->modality_window));
1022       gtk_grab_add (plug->modality_window);
1023     }
1024 }
1025
1026 /**
1027  * _gtk_plug_handle_modality_off:
1028  *
1029  * @plug: a #GtkPlug
1030  *
1031  * Called from the GtkPlug backend when the corresponding socket has
1032  * told the plug that it modality has toggled off.
1033  */
1034 void
1035 _gtk_plug_handle_modality_off (GtkPlug *plug)
1036 {
1037   if (plug->modality_window)
1038     {
1039       gtk_widget_destroy (plug->modality_window);
1040       plug->modality_window = NULL;
1041     }
1042 }
1043
1044 /**
1045  * _gtk_plug_focus_first_last:
1046  *
1047  * @plug: a #GtkPlug
1048  * @direction: a direction
1049  *
1050  * Called from the GtkPlug backend when the corresponding socket has
1051  * told the plug that it has received the focus.
1052  */
1053 void
1054 _gtk_plug_focus_first_last (GtkPlug          *plug,
1055                             GtkDirectionType  direction)
1056 {
1057   GtkWindow *window = GTK_WINDOW (plug);
1058   GtkWidget *parent;
1059
1060   if (window->focus_widget)
1061     {
1062       parent = window->focus_widget->parent;
1063       while (parent)
1064         {
1065           gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
1066           parent = GTK_WIDGET (parent)->parent;
1067         }
1068
1069       gtk_window_set_focus (GTK_WINDOW (plug), NULL);
1070     }
1071
1072   gtk_widget_child_focus (GTK_WIDGET (plug), direction);
1073 }