pintos-os.org Git - pspp/blob - lib/gtk-contrib/gtkxpaned.c

   1 /*******************************************************************************
   2  **3456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
   3  **      10        20        30        40        50        60        70        80
   4  **
   5  **  library for GtkXPaned-widget, a 2x2 grid-like variation of GtkPaned of gtk+
   6  **  Copyright (C) 2012, 2013 Free Software Foundation, Inc.
   7  **  Copyright (C) 2005-2006 Mirco "MacSlow" Müller <macslow@bangang.de>
   8  **
   9  **  This library is free software; you can redistribute it and/or
  10  **  modify it under the terms of the GNU Lesser General Public
  11  **  License as published by the Free Software Foundation; either
  12  **  version 2.1 of the License, or (at your option) any later version.
  13  **
  14  **  This library is distributed in the hope that it will be useful,
  15  **  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  **  Lesser General Public License for more details.
  18  **
  19  **  You should have received a copy of the GNU Lesser General Public
  20  **  License along with this library; if not, write to the Free Software
  21  **  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  **
  23  **  GtkXPaned is based on GtkPaned which was done by...
  24  **
  25  **  "Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald"
  26  **
  27  **  and later modified by...
  28  **
  29  **  "the GTK+ Team and others 1997-2000"
  30  **
  31  *******************************************************************************/
  32
  33 #include <config.h>
  34 #include "gtkxpaned.h"
  35
  36 #include <gtk/gtk.h>
  37 #include <ui/gui/psppire-marshal.h>
  38 #include <gdk/gdkkeysyms.h>
  39 #include <gdk/gdkkeysyms-compat.h>
  40
  41 enum WidgetProperties
  42   {
  43     PROP_0,
  44     PROP_X_POSITION,
  45     PROP_Y_POSITION,
  46     PROP_POSITION_SET,
  47     PROP_MIN_X_POSITION,
  48     PROP_MIN_Y_POSITION,
  49     PROP_MAX_X_POSITION,
  50     PROP_MAX_Y_POSITION
  51   };
  52
  53 enum ChildProperties
  54   {
  55     CHILD_PROP_0,
  56     CHILD_PROP_RESIZE,
  57     CHILD_PROP_SHRINK
  58   };
  59
  60 enum WidgetSignals
  61   {
  62     CYCLE_CHILD_FOCUS,
  63     TOGGLE_HANDLE_FOCUS,
  64     MOVE_HANDLE,
  65     CYCLE_HANDLE_FOCUS,
  66     ACCEPT_POSITION,
  67     CANCEL_POSITION,
  68     LAST_SIGNAL
  69   };
  70
  71 static void gtk_xpaned_class_init (GtkXPanedClass * klass);
  72
  73 static void gtk_xpaned_init (GtkXPaned * xpaned);
  74
  75 static void
  76 gtk_xpaned_get_preferred_width (GtkWidget *widget,
  77                                 gint      *minimal_width,
  78                                 gint      *natural_width)
  79 {
  80   GtkXPaned *xpaned = GTK_XPANED (widget);
  81   gint tl[2], tr[2], bl[2], br[2];
  82   gint overhead;
  83   gint w[2];
  84   int i;
  85
  86   if (xpaned->top_left_child
  87       && gtk_widget_get_visible (xpaned->top_left_child))
  88     gtk_widget_get_preferred_width (xpaned->top_left_child, &tl[0], &tl[1]);
  89   else
  90     tl[0] = tl[1] = 0;
  91
  92   if (xpaned->top_right_child
  93       && gtk_widget_get_visible (xpaned->top_right_child))
  94     gtk_widget_get_preferred_width (xpaned->top_right_child, &tr[0], &tr[1]);
  95   else
  96     tr[0] = tr[1] = 0;
  97
  98   if (xpaned->bottom_left_child
  99       && gtk_widget_get_visible (xpaned->bottom_left_child))
 100     gtk_widget_get_preferred_width (xpaned->bottom_left_child, &bl[0], &bl[1]);
 101   else
 102     bl[0] = bl[1] = 0;
 103
 104   if (xpaned->bottom_right_child
 105       && gtk_widget_get_visible (xpaned->bottom_right_child))
 106     gtk_widget_get_preferred_width (xpaned->bottom_right_child,
 107                                     &br[0], &br[1]);
 108   else
 109     br[0] = br[1] = 0;
 110
 111   /* add 2 times the set border-width to the GtkXPaneds requisition */
 112   overhead = gtk_container_get_border_width (GTK_CONTAINER (xpaned)) * 2;
 113
 114   /* also add the handle "thickness" to GtkXPaned's width requisition */
 115   if (xpaned->top_left_child
 116       && gtk_widget_get_visible (xpaned->top_left_child)
 117       && xpaned->top_right_child
 118       && gtk_widget_get_visible (xpaned->top_right_child)
 119       && xpaned->bottom_left_child
 120       && gtk_widget_get_visible (xpaned->bottom_left_child)
 121       && xpaned->bottom_right_child
 122       && gtk_widget_get_visible (xpaned->bottom_right_child))
 123     {
 124       gint handle_size;
 125
 126       gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
 127       overhead += handle_size;
 128     }
 129
 130   for (i = 0; i < 2; i++)
 131     w[i] = (br[i] ? br[i] : MAX (tl[i] + tr[i], bl[i])) + overhead;
 132
 133   *minimal_width = w[0];
 134   *natural_width = w[1];
 135 }
 136
 137 static void
 138 gtk_xpaned_get_preferred_height (GtkWidget *widget,
 139                                 gint      *minimal_height,
 140                                 gint      *natural_height)
 141 {
 142   GtkXPaned *xpaned = GTK_XPANED (widget);
 143   gint tl[2], tr[2], bl[2], br[2];
 144   gint overhead;
 145   gint h[2];
 146   int i;
 147
 148   if (xpaned->top_left_child
 149       && gtk_widget_get_visible (xpaned->top_left_child))
 150     gtk_widget_get_preferred_height (xpaned->top_left_child, &tl[0], &tl[1]);
 151   else
 152     tl[0] = tl[1] = 0;
 153
 154   if (xpaned->top_right_child
 155       && gtk_widget_get_visible (xpaned->top_right_child))
 156     gtk_widget_get_preferred_height (xpaned->top_right_child, &tr[0], &tr[1]);
 157   else
 158     tr[0] = tr[1] = 0;
 159
 160   if (xpaned->bottom_left_child
 161       && gtk_widget_get_visible (xpaned->bottom_left_child))
 162     gtk_widget_get_preferred_height (xpaned->bottom_left_child,
 163                                      &bl[0], &bl[1]);
 164   else
 165     bl[0] = bl[1] = 0;
 166
 167   if (xpaned->bottom_right_child
 168       && gtk_widget_get_visible (xpaned->bottom_right_child))
 169     gtk_widget_get_preferred_height (xpaned->bottom_right_child,
 170                                     &br[0], &br[1]);
 171   else
 172     br[0] = br[1] = 0;
 173
 174   /* add 2 times the set border-width to the GtkXPaneds requisition */
 175   overhead = gtk_container_get_border_width (GTK_CONTAINER (xpaned)) * 2;
 176
 177   /* also add the handle "thickness" to GtkXPaned's height-requisition */
 178   if (xpaned->top_left_child
 179       && gtk_widget_get_visible (xpaned->top_left_child)
 180       && xpaned->top_right_child
 181       && gtk_widget_get_visible (xpaned->top_right_child)
 182       && xpaned->bottom_left_child
 183       && gtk_widget_get_visible (xpaned->bottom_left_child)
 184       && xpaned->bottom_right_child
 185       && gtk_widget_get_visible (xpaned->bottom_right_child))
 186     {
 187       gint handle_size;
 188
 189       gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
 190       overhead += handle_size;
 191     }
 192
 193   for (i = 0; i < 2; i++)
 194     h[i] = (br[i] ? br[i] : bl[i] + MAX (tl[i], tr[i])) + overhead;
 195
 196   *minimal_height = h[0];
 197   *natural_height = h[1];
 198 }
 199
 200 static void gtk_xpaned_size_allocate (GtkWidget * widget,
 201                                       GtkAllocation * allocation);
 202
 203 static void gtk_xpaned_set_property (GObject * object,
 204                                      guint prop_id,
 205                                      const GValue * value,
 206                                      GParamSpec * pspec);
 207
 208 static void gtk_xpaned_get_property (GObject * object,
 209                                      guint prop_id,
 210                                      GValue * value, GParamSpec * pspec);
 211
 212 static void gtk_xpaned_set_child_property (GtkContainer * container,
 213                                            GtkWidget * child,
 214                                            guint property_id,
 215                                            const GValue * value,
 216                                            GParamSpec * pspec);
 217
 218 static void gtk_xpaned_get_child_property (GtkContainer * container,
 219                                            GtkWidget * child,
 220                                            guint property_id,
 221                                            GValue * value,
 222                                            GParamSpec * pspec);
 223
 224 static void gtk_xpaned_finalize (GObject * object);
 225
 226 static void gtk_xpaned_realize (GtkWidget * widget);
 227
 228 static void gtk_xpaned_unrealize (GtkWidget * widget);
 229
 230 static void gtk_xpaned_map (GtkWidget * widget);
 231
 232 static void gtk_xpaned_unmap (GtkWidget * widget);
 233
 234 static gboolean gtk_xpaned_draw (GtkWidget * widget,
 235                                    cairo_t *ct);
 236
 237 static gboolean gtk_xpaned_enter (GtkWidget * widget,
 238                                   GdkEventCrossing * event);
 239
 240 static gboolean gtk_xpaned_leave (GtkWidget * widget,
 241                                   GdkEventCrossing * event);
 242
 243 static gboolean gtk_xpaned_button_press (GtkWidget * widget,
 244                                          GdkEventButton * event);
 245
 246 static gboolean gtk_xpaned_button_release (GtkWidget * widget,
 247                                            GdkEventButton * event);
 248
 249 static gboolean gtk_xpaned_motion (GtkWidget * widget,
 250                                    GdkEventMotion * event);
 251
 252 static gboolean gtk_xpaned_focus (GtkWidget * widget,
 253                                   GtkDirectionType direction);
 254
 255 static void gtk_xpaned_add (GtkContainer * container, GtkWidget * widget);
 256
 257 static void gtk_xpaned_remove (GtkContainer * container, GtkWidget * widget);
 258
 259 static void gtk_xpaned_forall (GtkContainer * container,
 260                                gboolean include_internals,
 261                                GtkCallback callback, gpointer callback_data);
 262
 263 static void gtk_xpaned_set_focus_child (GtkContainer * container,
 264                                         GtkWidget * child);
 265
 266 static void gtk_xpaned_set_saved_focus (GtkXPaned * xpaned,
 267                                         GtkWidget * widget);
 268
 269 static void gtk_xpaned_set_first_xpaned (GtkXPaned * xpaned,
 270                                          GtkXPaned * first_xpaned);
 271
 272 static void gtk_xpaned_set_last_top_left_child_focus (GtkXPaned * xpaned,
 273                                                       GtkWidget * widget);
 274
 275 static void gtk_xpaned_set_last_top_right_child_focus (GtkXPaned * xpaned,
 276                                                        GtkWidget * widget);
 277
 278 static void gtk_xpaned_set_last_bottom_left_child_focus (GtkXPaned * xpaned,
 279                                                          GtkWidget * widget);
 280
 281 static void gtk_xpaned_set_last_bottom_right_child_focus (GtkXPaned * xpaned,
 282                                                           GtkWidget * widget);
 283
 284 static gboolean gtk_xpaned_cycle_child_focus (GtkXPaned * xpaned,
 285                                               gboolean reverse);
 286
 287 static gboolean gtk_xpaned_cycle_handle_focus (GtkXPaned * xpaned,
 288                                                gboolean reverse);
 289
 290 static gboolean gtk_xpaned_move_handle (GtkXPaned * xpaned,
 291                                         GtkScrollType scroll);
 292
 293 static gboolean gtk_xpaned_accept_position (GtkXPaned * xpaned);
 294
 295 static gboolean gtk_xpaned_cancel_position (GtkXPaned * xpaned);
 296
 297 static gboolean gtk_xpaned_toggle_handle_focus (GtkXPaned * xpaned);
 298
 299 static GType gtk_xpaned_child_type (GtkContainer * container);
 300
 301 static GtkContainerClass *parent_class = NULL;
 302
 303 struct _GtkXPanedPrivate
 304 {
 305   GtkWidget *saved_focus;
 306   GtkXPaned *first_xpaned;
 307 };
 308
 309 GType
 310 gtk_xpaned_get_type (void)
 311 {
 312   static GType xpaned_type = 0;
 313
 314   if (!xpaned_type)
 315     {
 316       static const GTypeInfo xpaned_info = {
 317         sizeof (GtkXPanedClass),
 318         NULL,                   /* base_init */
 319         NULL,                   /* base_finalize */
 320         (GClassInitFunc) gtk_xpaned_class_init,
 321         NULL,                   /* class_finalize */
 322         NULL,                   /* class_data */
 323         sizeof (GtkXPaned),
 324         0,                      /* n_preallocs */
 325         (GInstanceInitFunc) gtk_xpaned_init
 326       };
 327
 328       xpaned_type = g_type_register_static (GTK_TYPE_CONTAINER,
 329                                             "GtkXPaned", &xpaned_info, 0);
 330     }
 331
 332   return xpaned_type;
 333 }
 334
 335 GtkWidget *
 336 gtk_xpaned_new (void)
 337 {
 338   GtkXPaned *xpaned;
 339
 340   xpaned = g_object_new (GTK_TYPE_XPANED, NULL);
 341
 342   return GTK_WIDGET (xpaned);
 343 }
 344
 345 static guint signals[LAST_SIGNAL] = { 0 };
 346
 347 static void
 348 add_tab_bindings (GtkBindingSet * binding_set, GdkModifierType modifiers)
 349 {
 350   gtk_binding_entry_add_signal (binding_set,
 351                                 GDK_Tab, modifiers, "toggle_handle_focus", 0);
 352
 353   gtk_binding_entry_add_signal (binding_set,
 354                                 GDK_KP_Tab,
 355                                 modifiers, "toggle_handle_focus", 0);
 356 }
 357
 358 static void
 359 add_move_binding (GtkBindingSet * binding_set,
 360                   guint keyval, GdkModifierType mask, GtkScrollType scroll)
 361 {
 362   gtk_binding_entry_add_signal (binding_set,
 363                                 keyval,
 364                                 mask,
 365                                 "move_handle",
 366                                 1, GTK_TYPE_SCROLL_TYPE, scroll);
 367 }
 368
 369 static void
 370 gtk_xpaned_class_init (GtkXPanedClass * class)
 371 {
 372   GObjectClass *object_class;
 373   GtkWidgetClass *widget_class;
 374   GtkContainerClass *container_class;
 375   GtkXPanedClass *xpaned_class;
 376   GtkBindingSet *binding_set;
 377
 378   object_class = (GObjectClass *) class;
 379   widget_class = (GtkWidgetClass *) class;
 380   container_class = (GtkContainerClass *) class;
 381   xpaned_class = (GtkXPanedClass *) class;
 382
 383   parent_class = g_type_class_peek_parent (class);
 384
 385   object_class->set_property = gtk_xpaned_set_property;
 386   object_class->get_property = gtk_xpaned_get_property;
 387   object_class->finalize = gtk_xpaned_finalize;
 388
 389   widget_class->realize = gtk_xpaned_realize;
 390   widget_class->unrealize = gtk_xpaned_unrealize;
 391   widget_class->map = gtk_xpaned_map;
 392   widget_class->unmap = gtk_xpaned_unmap;
 393   widget_class->draw = gtk_xpaned_draw;
 394   widget_class->focus = gtk_xpaned_focus;
 395   widget_class->enter_notify_event = gtk_xpaned_enter;
 396   widget_class->leave_notify_event = gtk_xpaned_leave;
 397   widget_class->button_press_event = gtk_xpaned_button_press;
 398   widget_class->button_release_event = gtk_xpaned_button_release;
 399   widget_class->motion_notify_event = gtk_xpaned_motion;
 400   widget_class->get_preferred_width  = gtk_xpaned_get_preferred_width;
 401   widget_class->get_preferred_height = gtk_xpaned_get_preferred_height;
 402
 403   widget_class->size_allocate = gtk_xpaned_size_allocate;
 404
 405   container_class->add = gtk_xpaned_add;
 406   container_class->remove = gtk_xpaned_remove;
 407   container_class->forall = gtk_xpaned_forall;
 408   container_class->child_type = gtk_xpaned_child_type;
 409   container_class->set_focus_child = gtk_xpaned_set_focus_child;
 410   container_class->set_child_property = gtk_xpaned_set_child_property;
 411   container_class->get_child_property = gtk_xpaned_get_child_property;
 412
 413   xpaned_class->cycle_child_focus = gtk_xpaned_cycle_child_focus;
 414   xpaned_class->toggle_handle_focus = gtk_xpaned_toggle_handle_focus;
 415   xpaned_class->move_handle = gtk_xpaned_move_handle;
 416   xpaned_class->cycle_handle_focus = gtk_xpaned_cycle_handle_focus;
 417   xpaned_class->accept_position = gtk_xpaned_accept_position;
 418   xpaned_class->cancel_position = gtk_xpaned_cancel_position;
 419
 420   g_object_class_install_property (object_class,
 421                                    PROP_X_POSITION,
 422                                    g_param_spec_int ("x-position",
 423                                                      ("x-Position"),
 424                                                      ("x-Position of paned separator in pixels (0 means all the way to the left)"),
 425                                                      0,
 426                                                      G_MAXINT,
 427                                                      0,
 428                                                      G_PARAM_READABLE |
 429                                                      G_PARAM_WRITABLE));
 430
 431   g_object_class_install_property (object_class,
 432                                    PROP_Y_POSITION,
 433                                    g_param_spec_int ("y-position",
 434                                                      "y-Position",
 435                                                      "y-Position of paned separator in pixels (0 means all the way to the top)",
 436                                                      0,
 437                                                      G_MAXINT,
 438                                                      0,
 439                                                      G_PARAM_READABLE |
 440                                                      G_PARAM_WRITABLE));
 441
 442   g_object_class_install_property (object_class,
 443                                    PROP_POSITION_SET,
 444                                    g_param_spec_boolean ("position-set",
 445                                                          "Position Set",
 446                                                          "TRUE if the Position property should be used",
 447                                                          FALSE,
 448                                                          G_PARAM_READABLE |
 449                                                          G_PARAM_WRITABLE));
 450
 451   gtk_widget_class_install_style_property (widget_class,
 452                                            g_param_spec_int ("handle-size",
 453                                                              "Handle Size",
 454                                                              "Width of handle",
 455                                                              0,
 456                                                              G_MAXINT,
 457                                                              3,
 458                                                              G_PARAM_READABLE));
 459   /**
 460    * GtkXPaned:min-x-position:
 461    *
 462    * The smallest possible value for the x-position property. This property is derived from the
 463    * size and shrinkability of the widget's children.
 464    *
 465    * Since: 2.4
 466    */
 467   g_object_class_install_property (object_class,
 468                                    PROP_MIN_X_POSITION,
 469                                    g_param_spec_int ("min-x-position",
 470                                                      "Minimal x-Position",
 471                                                      "Smallest possible value for the \"x-position\" property",
 472                                                      0,
 473                                                      G_MAXINT,
 474                                                      0, G_PARAM_READABLE));
 475
 476   /**
 477    * GtkXPaned:min-y-position:
 478    *
 479    * The smallest possible value for the y-position property. This property is derived from the
 480    * size and shrinkability of the widget's children.
 481    *
 482    * Since: 2.4
 483    */
 484   g_object_class_install_property (object_class,
 485                                    PROP_MIN_Y_POSITION,
 486                                    g_param_spec_int ("min-y-position",
 487                                                      "Minimal y-Position",
 488                                                      "Smallest possible value for the \"y-position\" property",
 489                                                      0,
 490                                                      G_MAXINT,
 491                                                      0, G_PARAM_READABLE));
 492
 493   /**
 494    * GtkPaned:max-x-position:
 495    *
 496    * The largest possible value for the x-position property. This property is derived from the
 497    * size and shrinkability of the widget's children.
 498    *
 499    * Since: 2.4
 500    */
 501   g_object_class_install_property (object_class,
 502                                    PROP_MAX_X_POSITION,
 503                                    g_param_spec_int ("max-x-position",
 504                                                      "Maximal x-Position",
 505                                                      "Largest possible value for the \"x-position\" property",
 506                                                      0,
 507                                                      G_MAXINT,
 508                                                      G_MAXINT,
 509                                                      G_PARAM_READABLE));
 510
 511   /**
 512    * GtkPaned:max-y-position:
 513    *
 514    * The largest possible value for the y-position property. This property is derived from the
 515    * size and shrinkability of the widget's children.
 516    *
 517    * Since: 2.4
 518    */
 519   g_object_class_install_property (object_class,
 520                                    PROP_MAX_Y_POSITION,
 521                                    g_param_spec_int ("max-y-position",
 522                                                      "Maximal y-Position",
 523                                                      "Largest possible value for the \"y-position\" property",
 524                                                      0,
 525                                                      G_MAXINT,
 526                                                      G_MAXINT,
 527                                                      G_PARAM_READABLE));
 528
 529   /**
 530    * GtkPaned:resize:
 531    *
 532    * The "resize" child property determines whether the child expands and
 533    * shrinks along with the paned widget.
 534    *
 535    * Since: 2.4
 536    */
 537   gtk_container_class_install_child_property (container_class,
 538                                               CHILD_PROP_RESIZE,
 539                                               g_param_spec_boolean ("resize",
 540                                                                     "Resize",
 541                                                                     "If TRUE, the child expands and shrinks along with the paned widget",
 542                                                                     TRUE,
 543                                                                     G_PARAM_READWRITE));
 544
 545   /**
 546    * GtkPaned:shrink:
 547    *
 548    * The "shrink" child property determines whether the child can be made
 549    * smaller than its requisition.
 550    *
 551    * Since: 2.4
 552    */
 553   gtk_container_class_install_child_property (container_class,
 554                                               CHILD_PROP_SHRINK,
 555                                               g_param_spec_boolean ("shrink",
 556                                                                     "Shrink",
 557                                                                     "If TRUE, the child can be made smaller than its requisition",
 558                                                                     TRUE,
 559                                                                     G_PARAM_READWRITE));
 560
 561   signals[CYCLE_CHILD_FOCUS] = g_signal_new ("cycle-child-focus",
 562                                              G_TYPE_FROM_CLASS (object_class),
 563                                              G_SIGNAL_RUN_LAST |
 564                                              G_SIGNAL_ACTION,
 565                                              G_STRUCT_OFFSET (GtkXPanedClass,
 566                                                               cycle_child_focus),
 567                                              NULL, NULL,
 568                                              psppire_marshal_BOOLEAN__BOOLEAN,
 569                                              G_TYPE_BOOLEAN, 1,
 570                                              G_TYPE_BOOLEAN);
 571
 572   signals[TOGGLE_HANDLE_FOCUS] = g_signal_new ("toggle-handle-focus",
 573                                                G_TYPE_FROM_CLASS
 574                                                (object_class),
 575                                                G_SIGNAL_RUN_LAST |
 576                                                G_SIGNAL_ACTION,
 577                                                G_STRUCT_OFFSET
 578                                                (GtkXPanedClass,
 579                                                 toggle_handle_focus), NULL,
 580                                                NULL,
 581                                                psppire_marshal_BOOLEAN__VOID,
 582                                                G_TYPE_BOOLEAN, 0);
 583
 584   signals[MOVE_HANDLE] = g_signal_new ("move-handle",
 585                                        G_TYPE_FROM_CLASS (object_class),
 586                                        G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 587                                        G_STRUCT_OFFSET (GtkXPanedClass,
 588                                                         move_handle), NULL,
 589                                        NULL, psppire_marshal_BOOLEAN__ENUM,
 590                                        G_TYPE_BOOLEAN, 1,
 591                                        GTK_TYPE_SCROLL_TYPE);
 592
 593   signals[CYCLE_HANDLE_FOCUS] = g_signal_new ("cycle-handle-focus",
 594                                               G_TYPE_FROM_CLASS
 595                                               (object_class),
 596                                               G_SIGNAL_RUN_LAST |
 597                                               G_SIGNAL_ACTION,
 598                                               G_STRUCT_OFFSET (GtkXPanedClass,
 599                                                                cycle_handle_focus),
 600                                               NULL, NULL,
 601                                               psppire_marshal_BOOLEAN__BOOLEAN,
 602                                               G_TYPE_BOOLEAN, 1,
 603                                               G_TYPE_BOOLEAN);
 604
 605   signals[ACCEPT_POSITION] = g_signal_new ("accept-position",
 606                                            G_TYPE_FROM_CLASS (object_class),
 607                                            G_SIGNAL_RUN_LAST |
 608                                            G_SIGNAL_ACTION,
 609                                            G_STRUCT_OFFSET (GtkXPanedClass,
 610                                                             accept_position),
 611                                            NULL, NULL,
 612                                            psppire_marshal_BOOLEAN__VOID,
 613                                            G_TYPE_BOOLEAN, 0);
 614
 615   signals[CANCEL_POSITION] = g_signal_new ("cancel-position",
 616                                            G_TYPE_FROM_CLASS (object_class),
 617                                            G_SIGNAL_RUN_LAST |
 618                                            G_SIGNAL_ACTION,
 619                                            G_STRUCT_OFFSET (GtkXPanedClass,
 620                                                             cancel_position),
 621                                            NULL, NULL,
 622                                            psppire_marshal_BOOLEAN__VOID,
 623                                            G_TYPE_BOOLEAN, 0);
 624
 625   binding_set = gtk_binding_set_by_class (class);
 626
 627   /* F6 and friends */
 628   gtk_binding_entry_add_signal (binding_set,
 629                                 GDK_F6, 0,
 630                                 "cycle-child-focus", 1,
 631                                 G_TYPE_BOOLEAN, FALSE);
 632
 633   gtk_binding_entry_add_signal (binding_set,
 634                                 GDK_F6, GDK_SHIFT_MASK,
 635                                 "cycle-child-focus", 1, G_TYPE_BOOLEAN, TRUE);
 636
 637   /* F8 and friends */
 638   gtk_binding_entry_add_signal (binding_set,
 639                                 GDK_F8, 0,
 640                                 "cycle-handle-focus", 1,
 641                                 G_TYPE_BOOLEAN, FALSE);
 642
 643   gtk_binding_entry_add_signal (binding_set,
 644                                 GDK_F8, GDK_SHIFT_MASK,
 645                                 "cycle-handle-focus", 1,
 646                                 G_TYPE_BOOLEAN, TRUE);
 647
 648   add_tab_bindings (binding_set, 0);
 649   add_tab_bindings (binding_set, GDK_CONTROL_MASK);
 650   add_tab_bindings (binding_set, GDK_SHIFT_MASK);
 651   add_tab_bindings (binding_set, GDK_CONTROL_MASK | GDK_SHIFT_MASK);
 652
 653   /* accept and cancel positions */
 654   gtk_binding_entry_add_signal (binding_set,
 655                                 GDK_Escape, 0, "cancel-position", 0);
 656
 657   gtk_binding_entry_add_signal (binding_set,
 658                                 GDK_Return, 0, "accept-position", 0);
 659
 660   gtk_binding_entry_add_signal (binding_set,
 661                                 GDK_KP_Enter, 0, "accept-position", 0);
 662
 663   gtk_binding_entry_add_signal (binding_set,
 664                                 GDK_space, 0, "accept-position", 0);
 665
 666   gtk_binding_entry_add_signal (binding_set,
 667                                 GDK_KP_Space, 0, "accept-position", 0);
 668
 669   /* move handle */
 670   add_move_binding (binding_set, GDK_Left, 0, GTK_SCROLL_STEP_LEFT);
 671   add_move_binding (binding_set, GDK_KP_Left, 0, GTK_SCROLL_STEP_LEFT);
 672   add_move_binding (binding_set, GDK_Left, GDK_CONTROL_MASK,
 673                     GTK_SCROLL_PAGE_LEFT);
 674   add_move_binding (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
 675                     GTK_SCROLL_PAGE_LEFT);
 676
 677   add_move_binding (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_RIGHT);
 678   add_move_binding (binding_set, GDK_Right, GDK_CONTROL_MASK,
 679                     GTK_SCROLL_PAGE_RIGHT);
 680   add_move_binding (binding_set, GDK_KP_Right, 0, GTK_SCROLL_STEP_RIGHT);
 681   add_move_binding (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
 682                     GTK_SCROLL_PAGE_RIGHT);
 683
 684   add_move_binding (binding_set, GDK_Up, 0, GTK_SCROLL_STEP_UP);
 685   add_move_binding (binding_set, GDK_Up, GDK_CONTROL_MASK,
 686                     GTK_SCROLL_PAGE_UP);
 687   add_move_binding (binding_set, GDK_KP_Up, 0, GTK_SCROLL_STEP_UP);
 688   add_move_binding (binding_set, GDK_KP_Up, GDK_CONTROL_MASK,
 689                     GTK_SCROLL_PAGE_UP);
 690   add_move_binding (binding_set, GDK_Page_Up, 0, GTK_SCROLL_PAGE_UP);
 691   add_move_binding (binding_set, GDK_KP_Page_Up, 0, GTK_SCROLL_PAGE_UP);
 692
 693   add_move_binding (binding_set, GDK_Down, 0, GTK_SCROLL_STEP_DOWN);
 694   add_move_binding (binding_set, GDK_Down, GDK_CONTROL_MASK,
 695                     GTK_SCROLL_PAGE_DOWN);
 696   add_move_binding (binding_set, GDK_KP_Down, 0, GTK_SCROLL_STEP_DOWN);
 697   add_move_binding (binding_set, GDK_KP_Down, GDK_CONTROL_MASK,
 698                     GTK_SCROLL_PAGE_DOWN);
 699   add_move_binding (binding_set, GDK_Page_Down, 0, GTK_SCROLL_PAGE_RIGHT);
 700   add_move_binding (binding_set, GDK_KP_Page_Down, 0, GTK_SCROLL_PAGE_RIGHT);
 701
 702   add_move_binding (binding_set, GDK_Home, 0, GTK_SCROLL_START);
 703   add_move_binding (binding_set, GDK_KP_Home, 0, GTK_SCROLL_START);
 704   add_move_binding (binding_set, GDK_End, 0, GTK_SCROLL_END);
 705   add_move_binding (binding_set, GDK_KP_End, 0, GTK_SCROLL_END);
 706 }
 707
 708 static GType
 709 gtk_xpaned_child_type (GtkContainer * container)
 710 {
 711   if (!GTK_XPANED (container)->top_left_child ||
 712       !GTK_XPANED (container)->top_right_child ||
 713       !GTK_XPANED (container)->bottom_left_child ||
 714       !GTK_XPANED (container)->bottom_right_child)
 715     return GTK_TYPE_WIDGET;
 716   else
 717     return G_TYPE_NONE;
 718 }
 719
 720 static void
 721 gtk_xpaned_init (GtkXPaned * xpaned)
 722 {
 723   gtk_widget_set_can_focus (GTK_WIDGET (xpaned), TRUE);
 724   gtk_widget_set_has_window (GTK_WIDGET (xpaned), FALSE);
 725
 726   xpaned->top_left_child = NULL;
 727   xpaned->top_right_child = NULL;
 728   xpaned->bottom_left_child = NULL;
 729   xpaned->bottom_right_child = NULL;
 730   xpaned->handle_east = NULL;
 731   xpaned->handle_west = NULL;
 732   xpaned->handle_north = NULL;
 733   xpaned->handle_south = NULL;
 734   xpaned->handle_middle = NULL;
 735   xpaned->cursor_type_east = GDK_SB_V_DOUBLE_ARROW;
 736   xpaned->cursor_type_west = GDK_SB_V_DOUBLE_ARROW;
 737   xpaned->cursor_type_north = GDK_SB_H_DOUBLE_ARROW;
 738   xpaned->cursor_type_south = GDK_SB_H_DOUBLE_ARROW;
 739   xpaned->cursor_type_middle = GDK_FLEUR;
 740
 741   xpaned->handle_pos_east.width = 5;
 742   xpaned->handle_pos_east.height = 5;
 743   xpaned->handle_pos_west.width = 5;
 744   xpaned->handle_pos_west.height = 5;
 745   xpaned->handle_pos_north.width = 5;
 746   xpaned->handle_pos_north.height = 5;
 747   xpaned->handle_pos_south.width = 5;
 748   xpaned->handle_pos_south.height = 5;
 749   xpaned->handle_pos_middle.width = 5;
 750   xpaned->handle_pos_middle.height = 5;
 751
 752   xpaned->position_set = FALSE;
 753   xpaned->last_allocation.width = -1;
 754   xpaned->last_allocation.height = -1;
 755   xpaned->in_drag_vert = FALSE;
 756   xpaned->in_drag_horiz = FALSE;
 757   xpaned->in_drag_vert_and_horiz = FALSE;
 758
 759   xpaned->maximized[GTK_XPANED_TOP_LEFT] = FALSE;
 760   xpaned->maximized[GTK_XPANED_TOP_RIGHT] = FALSE;
 761   xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] = FALSE;
 762   xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT] = FALSE;
 763
 764   xpaned->priv = g_new0 (GtkXPanedPrivate, 1);
 765   xpaned->last_top_left_child_focus = NULL;
 766   xpaned->last_top_right_child_focus = NULL;
 767   xpaned->last_bottom_left_child_focus = NULL;
 768   xpaned->last_bottom_right_child_focus = NULL;
 769   xpaned->in_recursion = FALSE;
 770   xpaned->handle_prelit = FALSE;
 771   xpaned->original_position.x = -1;
 772   xpaned->original_position.y = -1;
 773   xpaned->unmaximized_position.x = -1;
 774   xpaned->unmaximized_position.y = -1;
 775
 776   xpaned->handle_pos_east.x = -1;
 777   xpaned->handle_pos_east.y = -1;
 778   xpaned->handle_pos_west.x = -1;
 779   xpaned->handle_pos_west.y = -1;
 780   xpaned->handle_pos_north.x = -1;
 781   xpaned->handle_pos_north.y = -1;
 782   xpaned->handle_pos_south.x = -1;
 783   xpaned->handle_pos_south.y = -1;
 784   xpaned->handle_pos_middle.x = -1;
 785   xpaned->handle_pos_middle.y = -1;
 786
 787   xpaned->drag_pos.x = -1;
 788   xpaned->drag_pos.y = -1;
 789 }
 790
 791 void
 792 gtk_xpaned_compute_position (GtkXPaned * xpaned,
 793                              const GtkAllocation * allocation,
 794                              GtkRequisition * top_left_child_req,
 795                              GtkRequisition * top_right_child_req,
 796                              GtkRequisition * bottom_left_child_req,
 797                              GtkRequisition * bottom_right_child_req);
 798
 799
 800 static void
 801 gtk_xpaned_size_allocate (GtkWidget * widget, GtkAllocation * allocation)
 802 {
 803   GtkXPaned *xpaned = GTK_XPANED (widget);
 804   gint border_width = gtk_container_get_border_width (GTK_CONTAINER (xpaned));
 805   GtkAllocation top_left_child_allocation;
 806   GtkAllocation top_right_child_allocation;
 807   GtkAllocation bottom_left_child_allocation;
 808   GtkAllocation bottom_right_child_allocation;
 809   GtkRequisition top_left_child_requisition;
 810   GtkRequisition top_right_child_requisition;
 811   GtkRequisition bottom_left_child_requisition;
 812   GtkRequisition bottom_right_child_requisition;
 813   gint handle_size;
 814
 815   /* determine size of handle(s) */
 816   gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
 817
 818   gtk_widget_set_allocation (widget, allocation);
 819
 820   if (xpaned->top_left_child
 821       && gtk_widget_get_visible (xpaned->top_left_child)
 822       && xpaned->top_right_child
 823       && gtk_widget_get_visible (xpaned->top_right_child)
 824       && xpaned->bottom_left_child
 825       && gtk_widget_get_visible (xpaned->bottom_left_child)
 826       && xpaned->bottom_right_child
 827       && gtk_widget_get_visible (xpaned->bottom_right_child))
 828     {
 829       /* what sizes do the children want to be at least at */
 830       gtk_widget_get_preferred_size (xpaned->top_left_child,
 831                                      &top_left_child_requisition, NULL);
 832       gtk_widget_get_preferred_size (xpaned->top_right_child,
 833                                      &top_right_child_requisition, NULL);
 834       gtk_widget_get_preferred_size (xpaned->bottom_left_child,
 835                                      &bottom_left_child_requisition, NULL);
 836       gtk_widget_get_preferred_size (xpaned->bottom_right_child,
 837                                      &bottom_right_child_requisition, NULL);
 838
 839       /* determine the total requisition-sum of all requisitions of borders,
 840        * handles, children etc. */
 841       gtk_xpaned_compute_position (xpaned,
 842                                    allocation,
 843                                    &top_left_child_requisition,
 844                                    &top_right_child_requisition,
 845                                    &bottom_left_child_requisition,
 846                                    &bottom_right_child_requisition);
 847
 848       /* calculate the current positions and sizes of the handles */
 849       xpaned->handle_pos_east.x =
 850         allocation->x + border_width +
 851         xpaned->top_left_child_size.width + handle_size;
 852       xpaned->handle_pos_east.y =
 853         allocation->y + border_width +
 854         xpaned->top_left_child_size.height;
 855       xpaned->handle_pos_east.width =
 856         allocation->width - xpaned->top_left_child_size.width -
 857         2 * border_width - handle_size;
 858       xpaned->handle_pos_east.height = handle_size;
 859
 860       xpaned->handle_pos_west.x = allocation->x + border_width;
 861       xpaned->handle_pos_west.y = xpaned->handle_pos_east.y;
 862       xpaned->handle_pos_west.width =
 863         allocation->width - xpaned->handle_pos_east.width -
 864         2 * border_width - handle_size;
 865       xpaned->handle_pos_west.height = handle_size;
 866
 867       xpaned->handle_pos_north.x = xpaned->handle_pos_east.x - handle_size;
 868       xpaned->handle_pos_north.y = allocation->y + border_width;
 869       xpaned->handle_pos_north.width = handle_size;
 870       xpaned->handle_pos_north.height =
 871         xpaned->handle_pos_east.y - allocation->y - border_width;
 872
 873       xpaned->handle_pos_south.x = xpaned->handle_pos_north.x;
 874       xpaned->handle_pos_south.y = xpaned->handle_pos_east.y + handle_size;
 875       xpaned->handle_pos_south.width = handle_size;
 876       xpaned->handle_pos_south.height =
 877         allocation->height - xpaned->handle_pos_north.height -
 878         2 * border_width - handle_size;
 879
 880
 881 #define CENTRUM 20
 882       xpaned->handle_pos_middle.x = xpaned->handle_pos_north.x;
 883       xpaned->handle_pos_middle.y = xpaned->handle_pos_east.y;
 884       xpaned->handle_pos_middle.width = handle_size + CENTRUM;
 885       xpaned->handle_pos_middle.height = handle_size + CENTRUM;
 886
 887       /* set allocation for top-left child */
 888       top_left_child_allocation.x = allocation->x + border_width;
 889       top_left_child_allocation.y = allocation->y + border_width;
 890       top_left_child_allocation.width = xpaned->handle_pos_west.width;
 891       top_left_child_allocation.height = xpaned->handle_pos_north.height;
 892
 893       /* set allocation for top-right child */
 894       top_right_child_allocation.x =
 895         allocation->x + border_width + handle_size +
 896         top_left_child_allocation.width;
 897       top_right_child_allocation.y = allocation->y + border_width;
 898       top_right_child_allocation.width = xpaned->handle_pos_east.width;
 899       top_right_child_allocation.height = xpaned->handle_pos_north.height;
 900
 901       /* set allocation for bottom-left child */
 902       bottom_left_child_allocation.x = xpaned->handle_pos_west.x;
 903       bottom_left_child_allocation.y = xpaned->handle_pos_south.y;
 904       bottom_left_child_allocation.width = xpaned->handle_pos_west.width;
 905       bottom_left_child_allocation.height = xpaned->handle_pos_south.height;
 906
 907       /* set allocation for bottom-right child */
 908       bottom_right_child_allocation.x = top_right_child_allocation.x;
 909       bottom_right_child_allocation.y = bottom_left_child_allocation.y;
 910       bottom_right_child_allocation.width = xpaned->handle_pos_east.width;
 911       bottom_right_child_allocation.height = xpaned->handle_pos_south.height;
 912
 913       if (gtk_widget_get_realized (widget))
 914         {
 915           if (gtk_widget_get_mapped (widget))
 916             {
 917               gdk_window_show (xpaned->handle_east);
 918               gdk_window_show (xpaned->handle_west);
 919               gdk_window_show (xpaned->handle_north);
 920               gdk_window_show (xpaned->handle_south);
 921               gdk_window_show (xpaned->handle_middle);
 922             }
 923
 924           gdk_window_move_resize (xpaned->handle_east,
 925                                   xpaned->handle_pos_east.x,
 926                                   xpaned->handle_pos_east.y,
 927                                   xpaned->handle_pos_east.width,
 928                                   xpaned->handle_pos_east.height);
 929
 930           gdk_window_move_resize (xpaned->handle_west,
 931                                   xpaned->handle_pos_west.x,
 932                                   xpaned->handle_pos_west.y,
 933                                   xpaned->handle_pos_west.width,
 934                                   xpaned->handle_pos_west.height);
 935
 936           gdk_window_move_resize (xpaned->handle_north,
 937                                   xpaned->handle_pos_north.x,
 938                                   xpaned->handle_pos_north.y,
 939                                   xpaned->handle_pos_north.width,
 940                                   xpaned->handle_pos_north.height);
 941
 942           gdk_window_move_resize (xpaned->handle_south,
 943                                   xpaned->handle_pos_south.x,
 944                                   xpaned->handle_pos_south.y,
 945                                   xpaned->handle_pos_south.width,
 946                                   xpaned->handle_pos_south.height);
 947
 948           gdk_window_move_resize (xpaned->handle_middle,
 949                                   xpaned->handle_pos_middle.x,
 950                                   xpaned->handle_pos_middle.y,
 951                                   xpaned->handle_pos_middle.width,
 952                                   xpaned->handle_pos_middle.height);
 953         }
 954
 955       /* Now allocate the children, making sure, when resizing not to
 956        * overlap the windows
 957        */
 958       if (gtk_widget_get_mapped (widget))
 959         {
 960           gtk_widget_size_allocate (xpaned->top_right_child,
 961                                     &top_right_child_allocation);
 962           gtk_widget_size_allocate (xpaned->top_left_child,
 963                                     &top_left_child_allocation);
 964           gtk_widget_size_allocate (xpaned->bottom_left_child,
 965                                     &bottom_left_child_allocation);
 966           gtk_widget_size_allocate (xpaned->bottom_right_child,
 967                                     &bottom_right_child_allocation);
 968         }
 969     }
 970 }
 971
 972 static void
 973 gtk_xpaned_set_property (GObject * object,
 974                          guint prop_id,
 975                          const GValue * value, GParamSpec * pspec)
 976 {
 977   GtkXPaned *xpaned = GTK_XPANED (object);
 978
 979   switch (prop_id)
 980     {
 981     case PROP_X_POSITION:
 982       gtk_xpaned_set_position_x (xpaned, g_value_get_int (value));
 983       break;
 984
 985     case PROP_Y_POSITION:
 986       gtk_xpaned_set_position_y (xpaned, g_value_get_int (value));
 987       break;
 988
 989     case PROP_POSITION_SET:
 990       xpaned->position_set = g_value_get_boolean (value);
 991       gtk_widget_queue_resize (GTK_WIDGET (xpaned));
 992       break;
 993
 994     default:
 995       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 996       break;
 997     }
 998 }
 999
1000 static void
1001 gtk_xpaned_get_property (GObject * object,
1002                          guint prop_id, GValue * value, GParamSpec * pspec)
1003 {
1004   GtkXPaned *xpaned = GTK_XPANED (object);
1005
1006   switch (prop_id)
1007     {
1008     case PROP_X_POSITION:
1009       g_value_set_int (value, xpaned->top_left_child_size.width);
1010       break;
1011
1012     case PROP_Y_POSITION:
1013       g_value_set_int (value, xpaned->top_left_child_size.height);
1014       break;
1015
1016     case PROP_POSITION_SET:
1017       g_value_set_boolean (value, xpaned->position_set);
1018       break;
1019
1020     case PROP_MIN_X_POSITION:
1021       g_value_set_int (value, xpaned->min_position.x);
1022       break;
1023
1024     case PROP_MIN_Y_POSITION:
1025       g_value_set_int (value, xpaned->min_position.y);
1026       break;
1027
1028     case PROP_MAX_X_POSITION:
1029       g_value_set_int (value, xpaned->max_position.x);
1030       break;
1031
1032     case PROP_MAX_Y_POSITION:
1033       g_value_set_int (value, xpaned->max_position.y);
1034       break;
1035
1036     default:
1037       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1038       break;
1039     }
1040 }
1041
1042 static void
1043 gtk_xpaned_set_child_property (GtkContainer * container,
1044                                GtkWidget * child,
1045                                guint property_id,
1046                                const GValue * value, GParamSpec * pspec)
1047 {
1048   GtkXPaned *xpaned = GTK_XPANED (container);
1049   gboolean old_value = FALSE;
1050   gboolean new_value = FALSE;
1051
1052   g_assert (child == xpaned->top_left_child ||
1053             child == xpaned->top_right_child ||
1054             child == xpaned->bottom_left_child ||
1055             child == xpaned->bottom_right_child);
1056
1057   new_value = g_value_get_boolean (value);
1058
1059   switch (property_id)
1060     {
1061     case CHILD_PROP_RESIZE:
1062       if (child == xpaned->top_left_child)
1063         {
1064           old_value = xpaned->top_left_child_resize;
1065           xpaned->top_left_child_resize = new_value;
1066         }
1067       else if (child == xpaned->top_right_child)
1068         {
1069           old_value = xpaned->top_right_child_resize;
1070           xpaned->top_right_child_resize = new_value;
1071         }
1072       else if (child == xpaned->bottom_left_child)
1073         {
1074           old_value = xpaned->bottom_left_child_resize;
1075           xpaned->bottom_left_child_resize = new_value;
1076         }
1077       else if (child == xpaned->bottom_right_child)
1078         {
1079           old_value = xpaned->bottom_right_child_resize;
1080           xpaned->bottom_right_child_resize = new_value;
1081         }
1082       break;
1083
1084     case CHILD_PROP_SHRINK:
1085       if (child == xpaned->top_left_child)
1086         {
1087           old_value = xpaned->top_left_child_shrink;
1088           xpaned->top_left_child_shrink = new_value;
1089         }
1090       else if (child == xpaned->top_right_child)
1091         {
1092           old_value = xpaned->top_right_child_shrink;
1093           xpaned->top_right_child_shrink = new_value;
1094         }
1095       else if (child == xpaned->bottom_left_child)
1096         {
1097           old_value = xpaned->bottom_left_child_shrink;
1098           xpaned->bottom_left_child_shrink = new_value;
1099         }
1100       else if (child == xpaned->bottom_right_child)
1101         {
1102           old_value = xpaned->bottom_right_child_shrink;
1103           xpaned->bottom_right_child_shrink = new_value;
1104         }
1105       break;
1106
1107     default:
1108       GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container,
1109                                                     property_id, pspec);
1110       old_value = -1;           /* quiet gcc */
1111       break;
1112     }
1113
1114   if (old_value != new_value)
1115     gtk_widget_queue_resize (GTK_WIDGET (container));
1116 }
1117
1118 static void
1119 gtk_xpaned_get_child_property (GtkContainer * container,
1120                                GtkWidget * child,
1121                                guint property_id,
1122                                GValue * value, GParamSpec * pspec)
1123 {
1124   GtkXPaned *xpaned = GTK_XPANED (container);
1125
1126   g_assert (child == xpaned->top_left_child ||
1127             child == xpaned->top_right_child ||
1128             child == xpaned->bottom_left_child ||
1129             child == xpaned->bottom_right_child);
1130
1131   switch (property_id)
1132     {
1133     case CHILD_PROP_RESIZE:
1134       if (child == xpaned->top_left_child)
1135         g_value_set_boolean (value, xpaned->top_left_child_resize);
1136       else if (child == xpaned->top_right_child)
1137         g_value_set_boolean (value, xpaned->top_right_child_resize);
1138       else if (child == xpaned->bottom_left_child)
1139         g_value_set_boolean (value, xpaned->bottom_left_child_resize);
1140       else if (child == xpaned->bottom_right_child)
1141         g_value_set_boolean (value, xpaned->bottom_right_child_resize);
1142       break;
1143
1144     case CHILD_PROP_SHRINK:
1145       if (child == xpaned->top_left_child)
1146         g_value_set_boolean (value, xpaned->top_left_child_shrink);
1147       else if (child == xpaned->top_right_child)
1148         g_value_set_boolean (value, xpaned->top_right_child_shrink);
1149       else if (child == xpaned->bottom_left_child)
1150         g_value_set_boolean (value, xpaned->bottom_left_child_shrink);
1151       else if (child == xpaned->bottom_right_child)
1152         g_value_set_boolean (value, xpaned->bottom_right_child_shrink);
1153       break;
1154
1155     default:
1156       GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container,
1157                                                     property_id, pspec);
1158       break;
1159     }
1160 }
1161
1162 static void
1163 gtk_xpaned_finalize (GObject * object)
1164 {
1165   GtkXPaned *xpaned = GTK_XPANED (object);
1166
1167   gtk_xpaned_set_saved_focus (xpaned, NULL);
1168   gtk_xpaned_set_first_xpaned (xpaned, NULL);
1169
1170   g_free (xpaned->priv);
1171
1172   G_OBJECT_CLASS (parent_class)->finalize (object);
1173 }
1174
1175 static void
1176 gtk_xpaned_realize (GtkWidget * widget)
1177 {
1178   GtkXPaned *xpaned;
1179   GdkWindowAttr attributes_east;
1180   GdkWindowAttr attributes_west;
1181   GdkWindowAttr attributes_north;
1182   GdkWindowAttr attributes_south;
1183   GdkWindowAttr attributes_middle;
1184   gint attributes_mask_east;
1185   gint attributes_mask_west;
1186   gint attributes_mask_north;
1187   gint attributes_mask_south;
1188   gint attributes_mask_middle;
1189
1190   gtk_widget_set_realized (widget, TRUE);
1191   xpaned = GTK_XPANED (widget);
1192
1193   gtk_widget_set_window (widget, gtk_widget_get_parent_window (widget));
1194   //  g_object_ref (widget->window);
1195
1196   attributes_east.window_type = GDK_WINDOW_CHILD;
1197   attributes_west.window_type = GDK_WINDOW_CHILD;
1198   attributes_north.window_type = GDK_WINDOW_CHILD;
1199   attributes_south.window_type = GDK_WINDOW_CHILD;
1200   attributes_middle.window_type = GDK_WINDOW_CHILD;
1201
1202   attributes_east.wclass = GDK_INPUT_ONLY;
1203   attributes_west.wclass = GDK_INPUT_ONLY;
1204   attributes_north.wclass = GDK_INPUT_ONLY;
1205   attributes_south.wclass = GDK_INPUT_ONLY;
1206   attributes_middle.wclass = GDK_INPUT_ONLY;
1207
1208   attributes_east.x = xpaned->handle_pos_east.x;
1209   attributes_east.y = xpaned->handle_pos_east.y;
1210   attributes_east.width = xpaned->handle_pos_east.width;
1211   attributes_east.height = xpaned->handle_pos_east.height;
1212
1213   attributes_west.x = xpaned->handle_pos_west.x;
1214   attributes_west.y = xpaned->handle_pos_west.y;
1215   attributes_west.width = xpaned->handle_pos_west.width;
1216   attributes_west.height = xpaned->handle_pos_west.height;
1217
1218   attributes_north.x = xpaned->handle_pos_north.x;
1219   attributes_north.y = xpaned->handle_pos_north.y;
1220   attributes_north.width = xpaned->handle_pos_north.width;
1221   attributes_north.height = xpaned->handle_pos_north.height;
1222
1223   attributes_south.x = xpaned->handle_pos_south.x;
1224   attributes_south.y = xpaned->handle_pos_south.y;
1225   attributes_south.width = xpaned->handle_pos_south.width;
1226   attributes_south.height = xpaned->handle_pos_south.height;
1227
1228   attributes_middle.x = xpaned->handle_pos_middle.x;
1229   attributes_middle.y = xpaned->handle_pos_middle.y;
1230   attributes_middle.width = xpaned->handle_pos_middle.width;
1231   attributes_middle.height = xpaned->handle_pos_middle.height;
1232
1233   attributes_east.cursor =
1234     gdk_cursor_new_for_display (gtk_widget_get_display (widget),
1235                                 xpaned->cursor_type_east);
1236   attributes_west.cursor =
1237     gdk_cursor_new_for_display (gtk_widget_get_display (widget),
1238                                 xpaned->cursor_type_west);
1239   attributes_north.cursor =
1240     gdk_cursor_new_for_display (gtk_widget_get_display (widget),
1241                                 xpaned->cursor_type_north);
1242   attributes_south.cursor =
1243     gdk_cursor_new_for_display (gtk_widget_get_display (widget),
1244                                 xpaned->cursor_type_south);
1245   attributes_middle.cursor =
1246     gdk_cursor_new_for_display (gtk_widget_get_display (widget),
1247                                 xpaned->cursor_type_middle);
1248
1249   attributes_east.event_mask = gtk_widget_get_events (widget);
1250   attributes_west.event_mask = gtk_widget_get_events (widget);
1251   attributes_north.event_mask = gtk_widget_get_events (widget);
1252   attributes_south.event_mask = gtk_widget_get_events (widget);
1253   attributes_middle.event_mask = gtk_widget_get_events (widget);
1254
1255   attributes_east.event_mask |= (GDK_BUTTON_PRESS_MASK |
1256                                  GDK_BUTTON_RELEASE_MASK |
1257                                  GDK_ENTER_NOTIFY_MASK |
1258                                  GDK_LEAVE_NOTIFY_MASK |
1259                                  GDK_POINTER_MOTION_MASK |
1260                                  GDK_POINTER_MOTION_HINT_MASK);
1261   attributes_west.event_mask |= (GDK_BUTTON_PRESS_MASK |
1262                                  GDK_BUTTON_RELEASE_MASK |
1263                                  GDK_ENTER_NOTIFY_MASK |
1264                                  GDK_LEAVE_NOTIFY_MASK |
1265                                  GDK_POINTER_MOTION_MASK |
1266                                  GDK_POINTER_MOTION_HINT_MASK);
1267   attributes_north.event_mask |= (GDK_BUTTON_PRESS_MASK |
1268                                   GDK_BUTTON_RELEASE_MASK |
1269                                   GDK_ENTER_NOTIFY_MASK |
1270                                   GDK_LEAVE_NOTIFY_MASK |
1271                                   GDK_POINTER_MOTION_MASK |
1272                                   GDK_POINTER_MOTION_HINT_MASK);
1273   attributes_south.event_mask |= (GDK_BUTTON_PRESS_MASK |
1274                                   GDK_BUTTON_RELEASE_MASK |
1275                                   GDK_ENTER_NOTIFY_MASK |
1276                                   GDK_LEAVE_NOTIFY_MASK |
1277                                   GDK_POINTER_MOTION_MASK |
1278                                   GDK_POINTER_MOTION_HINT_MASK);
1279   attributes_middle.event_mask |= (GDK_BUTTON_PRESS_MASK |
1280                                    GDK_BUTTON_RELEASE_MASK |
1281                                    GDK_ENTER_NOTIFY_MASK |
1282                                    GDK_LEAVE_NOTIFY_MASK |
1283                                    GDK_POINTER_MOTION_MASK |
1284                                    GDK_POINTER_MOTION_HINT_MASK);
1285
1286   attributes_mask_east = GDK_WA_X | GDK_WA_Y | GDK_WA_CURSOR;
1287   attributes_mask_west = GDK_WA_X | GDK_WA_Y | GDK_WA_CURSOR;
1288   attributes_mask_north = GDK_WA_X | GDK_WA_Y | GDK_WA_CURSOR;
1289   attributes_mask_south = GDK_WA_X | GDK_WA_Y | GDK_WA_CURSOR;
1290   attributes_mask_middle = GDK_WA_X | GDK_WA_Y | GDK_WA_CURSOR;
1291
1292   xpaned->handle_east = gdk_window_new (gtk_widget_get_window (widget),
1293                                         &attributes_east,
1294                                         attributes_mask_east);
1295   xpaned->handle_west = gdk_window_new (gtk_widget_get_window (widget),
1296                                         &attributes_west,
1297                                         attributes_mask_west);
1298   xpaned->handle_north = gdk_window_new (gtk_widget_get_window (widget),
1299                                          &attributes_north,
1300                                          attributes_mask_north);
1301   xpaned->handle_south = gdk_window_new (gtk_widget_get_window (widget),
1302                                          &attributes_south,
1303                                          attributes_mask_south);
1304   xpaned->handle_middle = gdk_window_new (gtk_widget_get_window (widget),
1305                                           &attributes_middle,
1306                                           attributes_mask_middle);
1307
1308   gdk_window_set_user_data (xpaned->handle_east, xpaned);
1309   gdk_window_set_user_data (xpaned->handle_west, xpaned);
1310   gdk_window_set_user_data (xpaned->handle_north, xpaned);
1311   gdk_window_set_user_data (xpaned->handle_south, xpaned);
1312   gdk_window_set_user_data (xpaned->handle_middle, xpaned);
1313
1314   g_object_unref (attributes_east.cursor);
1315   g_object_unref (attributes_west.cursor);
1316   g_object_unref (attributes_north.cursor);
1317   g_object_unref (attributes_south.cursor);
1318   g_object_unref (attributes_middle.cursor);
1319
1320   if (xpaned->top_left_child
1321       && gtk_widget_get_visible (xpaned->top_left_child)
1322       && xpaned->top_right_child
1323       && gtk_widget_get_visible (xpaned->top_right_child)
1324       && xpaned->bottom_left_child
1325       && gtk_widget_get_visible (xpaned->bottom_left_child)
1326       && xpaned->bottom_right_child
1327       && gtk_widget_get_visible (xpaned->bottom_right_child))
1328     {
1329       gdk_window_show (xpaned->handle_east);
1330       gdk_window_show (xpaned->handle_west);
1331       gdk_window_show (xpaned->handle_north);
1332       gdk_window_show (xpaned->handle_south);
1333       gdk_window_show (xpaned->handle_middle);
1334     }
1335 }
1336
1337 static void
1338 gtk_xpaned_unrealize (GtkWidget * widget)
1339 {
1340   GtkXPaned *xpaned = GTK_XPANED (widget);
1341
1342   if (xpaned->handle_east)
1343     {
1344       gdk_window_set_user_data (xpaned->handle_east, NULL);
1345       gdk_window_destroy (xpaned->handle_east);
1346       xpaned->handle_east = NULL;
1347     }
1348
1349   if (xpaned->handle_west)
1350     {
1351       gdk_window_set_user_data (xpaned->handle_west, NULL);
1352       gdk_window_destroy (xpaned->handle_west);
1353       xpaned->handle_west = NULL;
1354     }
1355
1356   if (xpaned->handle_north)
1357     {
1358       gdk_window_set_user_data (xpaned->handle_north, NULL);
1359       gdk_window_destroy (xpaned->handle_north);
1360       xpaned->handle_north = NULL;
1361     }
1362
1363   if (xpaned->handle_south)
1364     {
1365       gdk_window_set_user_data (xpaned->handle_south, NULL);
1366       gdk_window_destroy (xpaned->handle_south);
1367       xpaned->handle_south = NULL;
1368     }
1369
1370   if (xpaned->handle_middle)
1371     {
1372       gdk_window_set_user_data (xpaned->handle_middle, NULL);
1373       gdk_window_destroy (xpaned->handle_middle);
1374       xpaned->handle_middle = NULL;
1375     }
1376
1377   gtk_xpaned_set_last_top_left_child_focus (xpaned, NULL);
1378   gtk_xpaned_set_last_top_right_child_focus (xpaned, NULL);
1379   gtk_xpaned_set_last_bottom_left_child_focus (xpaned, NULL);
1380   gtk_xpaned_set_last_bottom_right_child_focus (xpaned, NULL);
1381   gtk_xpaned_set_saved_focus (xpaned, NULL);
1382   gtk_xpaned_set_first_xpaned (xpaned, NULL);
1383
1384   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
1385     (*GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1386 }
1387
1388 static void
1389 gtk_xpaned_map (GtkWidget * widget)
1390 {
1391   GtkXPaned *xpaned = GTK_XPANED (widget);
1392
1393   gdk_window_show (xpaned->handle_east);
1394   gdk_window_show (xpaned->handle_west);
1395   gdk_window_show (xpaned->handle_north);
1396   gdk_window_show (xpaned->handle_south);
1397   gdk_window_show (xpaned->handle_middle);
1398
1399   GTK_WIDGET_CLASS (parent_class)->map (widget);
1400 }
1401
1402 static void
1403 gtk_xpaned_unmap (GtkWidget * widget)
1404 {
1405   GtkXPaned *xpaned = GTK_XPANED (widget);
1406
1407   gdk_window_hide (xpaned->handle_east);
1408   gdk_window_hide (xpaned->handle_west);
1409   gdk_window_hide (xpaned->handle_north);
1410   gdk_window_hide (xpaned->handle_south);
1411   gdk_window_hide (xpaned->handle_middle);
1412
1413   GTK_WIDGET_CLASS (parent_class)->unmap (widget);
1414 }
1415
1416 static gboolean
1417 gtk_xpaned_draw (GtkWidget * widget, cairo_t *cr)
1418 {
1419   GtkXPaned *xpaned = GTK_XPANED (widget);
1420   gint handle_size;
1421
1422   /* determine size of handle(s) */
1423   gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
1424
1425   /* I want the handle-"thickness" to be at least 3 */
1426   g_assert (handle_size >= 3);
1427
1428   if (gtk_widget_get_visible (widget) && gtk_widget_get_mapped (widget) &&
1429       xpaned->top_left_child
1430       && gtk_widget_get_visible (xpaned->top_left_child)
1431       && xpaned->top_right_child
1432       && gtk_widget_get_visible (xpaned->top_right_child)
1433       && xpaned->bottom_left_child
1434       && gtk_widget_get_visible (xpaned->bottom_left_child)
1435       && xpaned->bottom_right_child
1436       && gtk_widget_get_visible (xpaned->bottom_right_child))
1437     {
1438       GtkStyleContext *context;
1439
1440       context = gtk_widget_get_style_context (widget);
1441       gtk_render_handle (context, cr,
1442                          xpaned->handle_pos_east.x - handle_size - 256 / 2,
1443                          xpaned->handle_pos_west.y + 1,
1444                          256 + handle_size, handle_size - 2);
1445
1446       gtk_render_handle (context, cr,
1447                          xpaned->handle_pos_north.x + 1,
1448                          xpaned->handle_pos_south.y - handle_size - 256 / 2,
1449                          handle_size - 2, 256 + handle_size);
1450     }
1451
1452   /* Chain up to draw children */
1453   GTK_WIDGET_CLASS (parent_class)->draw (widget, cr);
1454
1455   return FALSE;
1456 }
1457
1458 static gboolean
1459 is_rtl (GtkXPaned * xpaned)
1460 {
1461   if (gtk_widget_get_direction (GTK_WIDGET (xpaned)) == GTK_TEXT_DIR_RTL)
1462     return TRUE;
1463
1464   return FALSE;
1465 }
1466
1467 static void
1468 update_drag (GtkXPaned * xpaned)
1469 {
1470   GdkPoint pos;
1471   GtkWidget *widget = GTK_WIDGET (xpaned);
1472   gint handle_size;
1473   GtkRequisition size;
1474   GtkAllocation allocation;
1475
1476   gtk_widget_get_allocation (widget, &allocation);
1477
1478   gdk_window_get_device_position (gtk_widget_get_window (widget),
1479                                   gdk_device_manager_get_client_pointer (
1480                                     gdk_display_get_device_manager (
1481                                       gtk_widget_get_display (widget))),
1482                                   &pos.x, &pos.y, NULL);
1483   if (!gtk_widget_get_has_window (widget))
1484     {
1485       pos.x -= allocation.x;
1486       pos.y -= allocation.y;
1487     }
1488
1489   if (xpaned->in_drag_vert)
1490     {
1491       pos.y -= xpaned->drag_pos.y;
1492
1493       if (is_rtl (xpaned))
1494         {
1495           gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
1496
1497           size.height = allocation.height - pos.y - handle_size;
1498         }
1499       else
1500         {
1501           size.height = pos.y;
1502         }
1503
1504       size.height -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1505
1506       size.height =
1507         CLAMP (size.height, xpaned->min_position.y, xpaned->max_position.y);
1508
1509       if (size.height != xpaned->top_left_child_size.height)
1510         gtk_xpaned_set_position_y (xpaned, size.height);
1511     }
1512
1513   if (xpaned->in_drag_horiz)
1514     {
1515       pos.x -= xpaned->drag_pos.x;
1516
1517       if (is_rtl (xpaned))
1518         {
1519           gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
1520
1521           size.width = allocation.width - pos.x - handle_size;
1522         }
1523       else
1524         {
1525           size.width = pos.x;
1526         }
1527
1528       size.width -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1529
1530       size.width =
1531         CLAMP (size.width, xpaned->min_position.x, xpaned->max_position.x);
1532
1533       if (size.width != xpaned->top_left_child_size.width)
1534         gtk_xpaned_set_position_x (xpaned, size.width);
1535     }
1536
1537   if (xpaned->in_drag_vert_and_horiz)
1538     {
1539       pos.x -= xpaned->drag_pos.x;
1540       pos.y -= xpaned->drag_pos.y;
1541
1542       if (is_rtl (xpaned))
1543         {
1544           gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
1545
1546           size.width = allocation.width - pos.x - handle_size;
1547           size.height = allocation.height - pos.y - handle_size;
1548         }
1549       else
1550         {
1551           size.width = pos.x;
1552           size.height = pos.y;
1553         }
1554
1555       size.width -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1556       size.height -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1557
1558       size.width =
1559         CLAMP (size.width, xpaned->min_position.x, xpaned->max_position.x);
1560       size.height =
1561         CLAMP (size.height, xpaned->min_position.y, xpaned->max_position.y);
1562
1563       if (size.width != xpaned->top_left_child_size.width)
1564         gtk_xpaned_set_position_x (xpaned, size.width);
1565
1566       if (size.height != xpaned->top_left_child_size.height)
1567         gtk_xpaned_set_position_y (xpaned, size.height);
1568     }
1569 }
1570
1571 static gboolean
1572 gtk_xpaned_enter (GtkWidget * widget, GdkEventCrossing * event)
1573 {
1574   GtkXPaned *xpaned = GTK_XPANED (widget);
1575
1576   if (xpaned->in_drag_vert ||
1577       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1578     update_drag (xpaned);
1579   else
1580     {
1581       xpaned->handle_prelit = TRUE;
1582
1583       gtk_widget_queue_draw_area (widget,
1584                                   xpaned->handle_pos_east.x,
1585                                   xpaned->handle_pos_east.y,
1586                                   xpaned->handle_pos_east.width,
1587                                   xpaned->handle_pos_east.height);
1588
1589       gtk_widget_queue_draw_area (widget,
1590                                   xpaned->handle_pos_west.x,
1591                                   xpaned->handle_pos_west.y,
1592                                   xpaned->handle_pos_west.width,
1593                                   xpaned->handle_pos_west.height);
1594
1595       gtk_widget_queue_draw_area (widget,
1596                                   xpaned->handle_pos_north.x,
1597                                   xpaned->handle_pos_north.y,
1598                                   xpaned->handle_pos_north.width,
1599                                   xpaned->handle_pos_north.height);
1600
1601       gtk_widget_queue_draw_area (widget,
1602                                   xpaned->handle_pos_south.x,
1603                                   xpaned->handle_pos_south.y,
1604                                   xpaned->handle_pos_south.width,
1605                                   xpaned->handle_pos_south.height);
1606
1607       gtk_widget_queue_draw_area (widget,
1608                                   xpaned->handle_pos_middle.x,
1609                                   xpaned->handle_pos_middle.y,
1610                                   xpaned->handle_pos_middle.width,
1611                                   xpaned->handle_pos_middle.height);
1612     }
1613
1614   return TRUE;
1615 }
1616
1617 static gboolean
1618 gtk_xpaned_leave (GtkWidget * widget, GdkEventCrossing * event)
1619 {
1620   GtkXPaned *xpaned = GTK_XPANED (widget);
1621
1622   if (xpaned->in_drag_vert ||
1623       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1624     update_drag (xpaned);
1625   else
1626     {
1627       xpaned->handle_prelit = FALSE;
1628
1629       gtk_widget_queue_draw_area (widget,
1630                                   xpaned->handle_pos_east.x,
1631                                   xpaned->handle_pos_east.y,
1632                                   xpaned->handle_pos_east.width,
1633                                   xpaned->handle_pos_east.height);
1634
1635       gtk_widget_queue_draw_area (widget,
1636                                   xpaned->handle_pos_west.x,
1637                                   xpaned->handle_pos_west.y,
1638                                   xpaned->handle_pos_west.width,
1639                                   xpaned->handle_pos_west.height);
1640
1641       gtk_widget_queue_draw_area (widget,
1642                                   xpaned->handle_pos_north.x,
1643                                   xpaned->handle_pos_north.y,
1644                                   xpaned->handle_pos_north.width,
1645                                   xpaned->handle_pos_north.height);
1646
1647       gtk_widget_queue_draw_area (widget,
1648                                   xpaned->handle_pos_south.x,
1649                                   xpaned->handle_pos_south.y,
1650                                   xpaned->handle_pos_south.width,
1651                                   xpaned->handle_pos_south.height);
1652
1653       gtk_widget_queue_draw_area (widget,
1654                                   xpaned->handle_pos_middle.x,
1655                                   xpaned->handle_pos_middle.y,
1656                                   xpaned->handle_pos_middle.width,
1657                                   xpaned->handle_pos_middle.height);
1658     }
1659
1660   return TRUE;
1661 }
1662
1663 static gboolean
1664 gtk_xpaned_focus (GtkWidget * widget, GtkDirectionType direction)
1665 {
1666   gboolean retval;
1667
1668   /* This is a hack, but how can this be done without
1669    * excessive cut-and-paste from gtkcontainer.c?
1670    */
1671
1672   gtk_widget_set_can_focus (GTK_WIDGET (widget), FALSE);
1673   retval = (*GTK_WIDGET_CLASS (parent_class)->focus) (widget, direction);
1674   gtk_widget_set_can_focus (GTK_WIDGET (widget), TRUE);
1675
1676   return retval;
1677 }
1678
1679 static void
1680 gtk_xpaned_button_press_grab (GdkWindow *handle, GdkEventButton *event)
1681 {
1682   /* We need a server grab here, not gtk_grab_add(), since
1683    * we don't want to pass events on to the widget's children */
1684   gdk_device_grab (event->device, handle,
1685                    GDK_OWNERSHIP_NONE,
1686                    FALSE,
1687                    (GDK_POINTER_MOTION_HINT_MASK
1688                     | GDK_BUTTON1_MOTION_MASK
1689                     | GDK_BUTTON_RELEASE_MASK
1690                     | GDK_ENTER_NOTIFY_MASK
1691                     | GDK_LEAVE_NOTIFY_MASK),
1692                    NULL, event->time);
1693 }
1694
1695 static gboolean
1696 gtk_xpaned_button_press (GtkWidget * widget, GdkEventButton * event)
1697 {
1698   GtkXPaned *xpaned = GTK_XPANED (widget);
1699
1700   /* if any child is currently maximized, jump right back */
1701   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
1702       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
1703       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
1704       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
1705     return FALSE;
1706
1707   /* if user is dragging the handles around */
1708   if (!xpaned->in_drag_vert_and_horiz &&
1709       event->window != xpaned->handle_east &&
1710       event->window != xpaned->handle_west &&
1711       event->window != xpaned->handle_north &&
1712       event->window != xpaned->handle_south &&
1713       event->window == xpaned->handle_middle && event->button == 1)
1714     {
1715       xpaned->in_drag_vert_and_horiz = TRUE;
1716       gtk_xpaned_button_press_grab (xpaned->handle_middle, event);
1717       xpaned->drag_pos.x = event->x;
1718       xpaned->drag_pos.y = event->y;
1719
1720       return TRUE;
1721     }
1722   else if (!xpaned->in_drag_vert &&
1723            event->window == xpaned->handle_east &&
1724            event->window != xpaned->handle_west &&
1725            event->window != xpaned->handle_north &&
1726            event->window != xpaned->handle_south &&
1727            event->window != xpaned->handle_middle && event->button == 1)
1728     {
1729       xpaned->in_drag_vert = TRUE;
1730       gtk_xpaned_button_press_grab (xpaned->handle_east, event);
1731       xpaned->drag_pos.y = event->y;
1732
1733       return TRUE;
1734     }
1735   else if (!xpaned->in_drag_vert &&
1736            event->window != xpaned->handle_east &&
1737            event->window == xpaned->handle_west &&
1738            event->window != xpaned->handle_north &&
1739            event->window != xpaned->handle_south &&
1740            event->window != xpaned->handle_middle && event->button == 1)
1741     {
1742       xpaned->in_drag_vert = TRUE;
1743       gtk_xpaned_button_press_grab (xpaned->handle_west, event);
1744       xpaned->drag_pos.y = event->y;
1745
1746       return TRUE;
1747     }
1748   else if (!xpaned->in_drag_horiz &&
1749            event->window != xpaned->handle_east &&
1750            event->window != xpaned->handle_west &&
1751            event->window == xpaned->handle_north &&
1752            event->window != xpaned->handle_south &&
1753            event->window != xpaned->handle_middle && event->button == 1)
1754     {
1755       xpaned->in_drag_horiz = TRUE;
1756       gtk_xpaned_button_press_grab (xpaned->handle_north, event);
1757       xpaned->drag_pos.x = event->x;
1758
1759       return TRUE;
1760     }
1761   else if (!xpaned->in_drag_horiz &&
1762            event->window != xpaned->handle_east &&
1763            event->window != xpaned->handle_west &&
1764            event->window != xpaned->handle_north &&
1765            event->window == xpaned->handle_south &&
1766            event->window != xpaned->handle_middle && event->button == 1)
1767     {
1768       xpaned->in_drag_horiz = TRUE;
1769       gtk_xpaned_button_press_grab (xpaned->handle_south, event);
1770       xpaned->drag_pos.x = event->x;
1771
1772       return TRUE;
1773     }
1774   return FALSE;
1775 }
1776
1777 static gboolean
1778 gtk_xpaned_button_release (GtkWidget * widget, GdkEventButton * event)
1779 {
1780   GtkXPaned *xpaned = GTK_XPANED (widget);
1781
1782   if (xpaned->in_drag_vert && (event->button == 1))
1783     {
1784       xpaned->in_drag_vert = FALSE;
1785       xpaned->drag_pos.y = -1;
1786       xpaned->position_set = TRUE;
1787       gdk_device_ungrab (event->device, event->time);
1788       return TRUE;
1789     }
1790   else if (xpaned->in_drag_horiz && (event->button == 1))
1791     {
1792       xpaned->in_drag_horiz = FALSE;
1793       xpaned->drag_pos.x = -1;
1794       xpaned->position_set = TRUE;
1795       gdk_device_ungrab (event->device, event->time);
1796       return TRUE;
1797     }
1798   else if (xpaned->in_drag_vert_and_horiz && (event->button == 1))
1799     {
1800       xpaned->in_drag_vert_and_horiz = FALSE;
1801       xpaned->drag_pos.x = -1;
1802       xpaned->drag_pos.y = -1;
1803       xpaned->position_set = TRUE;
1804       gdk_device_ungrab (event->device, event->time);
1805       return TRUE;
1806     }
1807
1808   return FALSE;
1809 }
1810
1811 static gboolean
1812 gtk_xpaned_motion (GtkWidget * widget, GdkEventMotion * event)
1813 {
1814   GtkXPaned *xpaned = GTK_XPANED (widget);
1815
1816   if (xpaned->in_drag_vert ||
1817       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1818
1819     {
1820       update_drag (xpaned);
1821       return TRUE;
1822     }
1823
1824   return FALSE;
1825 }
1826
1827 void
1828 gtk_xpaned_add_top_left (GtkXPaned * xpaned, GtkWidget * widget)
1829 {
1830   gtk_xpaned_pack_top_left (xpaned, widget, FALSE, TRUE);
1831 }
1832
1833 void
1834 gtk_xpaned_add_top_right (GtkXPaned * xpaned, GtkWidget * widget)
1835 {
1836   gtk_xpaned_pack_top_right (xpaned, widget, FALSE, TRUE);
1837 }
1838
1839 void
1840 gtk_xpaned_add_bottom_left (GtkXPaned * xpaned, GtkWidget * widget)
1841 {
1842   gtk_xpaned_pack_bottom_left (xpaned, widget, FALSE, TRUE);
1843 }
1844
1845 void
1846 gtk_xpaned_add_bottom_right (GtkXPaned * xpaned, GtkWidget * widget)
1847 {
1848   gtk_xpaned_pack_bottom_right (xpaned, widget, FALSE, TRUE);
1849 }
1850
1851 void
1852 gtk_xpaned_pack_top_left (GtkXPaned * xpaned,
1853                           GtkWidget * child, gboolean resize, gboolean shrink)
1854 {
1855   g_return_if_fail (GTK_IS_XPANED (xpaned));
1856   g_return_if_fail (GTK_IS_WIDGET (child));
1857
1858   if (!xpaned->top_left_child)
1859     {
1860       xpaned->top_left_child = child;
1861       xpaned->top_left_child_resize = resize;
1862       xpaned->top_left_child_shrink = shrink;
1863
1864       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1865     }
1866 }
1867
1868 void
1869 gtk_xpaned_pack_top_right (GtkXPaned * xpaned,
1870                            GtkWidget * child,
1871                            gboolean resize, gboolean shrink)
1872 {
1873   g_return_if_fail (GTK_IS_XPANED (xpaned));
1874   g_return_if_fail (GTK_IS_WIDGET (child));
1875
1876   if (!xpaned->top_right_child)
1877     {
1878       xpaned->top_right_child = child;
1879       xpaned->top_right_child_resize = resize;
1880       xpaned->top_right_child_shrink = shrink;
1881
1882       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1883     }
1884 }
1885
1886 void
1887 gtk_xpaned_pack_bottom_left (GtkXPaned * xpaned,
1888                              GtkWidget * child,
1889                              gboolean resize, gboolean shrink)
1890 {
1891   g_return_if_fail (GTK_IS_XPANED (xpaned));
1892   g_return_if_fail (GTK_IS_WIDGET (child));
1893
1894   if (!xpaned->bottom_left_child)
1895     {
1896       xpaned->bottom_left_child = child;
1897       xpaned->bottom_left_child_resize = resize;
1898       xpaned->bottom_left_child_shrink = shrink;
1899
1900       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1901     }
1902 }
1903
1904 void
1905 gtk_xpaned_pack_bottom_right (GtkXPaned * xpaned,
1906                               GtkWidget * child,
1907                               gboolean resize, gboolean shrink)
1908 {
1909   g_return_if_fail (GTK_IS_XPANED (xpaned));
1910   g_return_if_fail (GTK_IS_WIDGET (child));
1911
1912   if (!xpaned->bottom_right_child)
1913     {
1914       xpaned->bottom_right_child = child;
1915       xpaned->bottom_right_child_resize = resize;
1916       xpaned->bottom_right_child_shrink = shrink;
1917
1918       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1919     }
1920 }
1921
1922 static void
1923 gtk_xpaned_add (GtkContainer * container, GtkWidget * widget)
1924 {
1925   GtkXPaned *xpaned;
1926
1927   g_return_if_fail (GTK_IS_XPANED (container));
1928
1929   xpaned = GTK_XPANED (container);
1930
1931   if (!xpaned->top_left_child)
1932     gtk_xpaned_add_top_left (xpaned, widget);
1933   else if (!xpaned->top_right_child)
1934     gtk_xpaned_add_top_right (xpaned, widget);
1935   else if (!xpaned->bottom_left_child)
1936     gtk_xpaned_add_bottom_left (xpaned, widget);
1937   else if (!xpaned->bottom_right_child)
1938     gtk_xpaned_add_bottom_right (xpaned, widget);
1939   else
1940     g_warning ("GtkXPaned cannot have more than 4 children\n");
1941 }
1942
1943 static void
1944 gtk_xpaned_remove (GtkContainer * container, GtkWidget * widget)
1945 {
1946   GtkXPaned *xpaned;
1947   gboolean was_visible;
1948
1949   xpaned = GTK_XPANED (container);
1950   was_visible = gtk_widget_get_visible (widget);
1951
1952   if (xpaned->top_left_child == widget)
1953     {
1954       gtk_widget_unparent (widget);
1955
1956       xpaned->top_left_child = NULL;
1957
1958       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
1959         gtk_widget_queue_resize (GTK_WIDGET (container));
1960     }
1961   else if (xpaned->top_right_child == widget)
1962     {
1963       gtk_widget_unparent (widget);
1964
1965       xpaned->top_right_child = NULL;
1966
1967       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
1968         gtk_widget_queue_resize (GTK_WIDGET (container));
1969     }
1970   else if (xpaned->bottom_left_child == widget)
1971     {
1972       gtk_widget_unparent (widget);
1973
1974       xpaned->bottom_left_child = NULL;
1975
1976       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
1977         gtk_widget_queue_resize (GTK_WIDGET (container));
1978     }
1979   else if (xpaned->bottom_right_child == widget)
1980     {
1981       gtk_widget_unparent (widget);
1982
1983       xpaned->bottom_right_child = NULL;
1984
1985       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
1986         gtk_widget_queue_resize (GTK_WIDGET (container));
1987     }
1988   else
1989     g_warning ("GtkXPaned has no more children attached\n");
1990
1991 }
1992
1993 static void
1994 gtk_xpaned_forall (GtkContainer * container,
1995                    gboolean include_internals,
1996                    GtkCallback callback, gpointer callback_data)
1997 {
1998   GtkXPaned *xpaned;
1999
2000   g_return_if_fail (callback != NULL);
2001
2002   xpaned = GTK_XPANED (container);
2003
2004   if (xpaned->top_left_child)
2005     (*callback) (xpaned->top_left_child, callback_data);
2006   if (xpaned->top_right_child)
2007     (*callback) (xpaned->top_right_child, callback_data);
2008   if (xpaned->bottom_left_child)
2009     (*callback) (xpaned->bottom_left_child, callback_data);
2010   if (xpaned->bottom_right_child)
2011     (*callback) (xpaned->bottom_right_child, callback_data);
2012 }
2013
2014 /**
2015  * gtk_xpaned_get_position_x:
2016  * @paned: a #GtkXPaned widget
2017  *
2018  * Obtains the x-position of the divider.
2019  *
2020  * Return value: x-position of the divider
2021  **/
2022 gint
2023 gtk_xpaned_get_position_x (GtkXPaned * xpaned)
2024 {
2025   g_return_val_if_fail (GTK_IS_XPANED (xpaned), 0);
2026
2027   return xpaned->top_left_child_size.width;
2028 }
2029
2030 /**
2031  * gtk_xpaned_get_position_y:
2032  * @paned: a #GtkXPaned widget
2033  *
2034  * Obtains the y-position of the divider.
2035  *
2036  * Return value: y-position of the divider
2037  **/
2038 gint
2039 gtk_xpaned_get_position_y (GtkXPaned * xpaned)
2040 {
2041   g_return_val_if_fail (GTK_IS_XPANED (xpaned), 0);
2042
2043   return xpaned->top_left_child_size.height;
2044 }
2045
2046 /**
2047  * gtk_xpaned_set_position_x:
2048  * @paned: a #GtkXPaned widget
2049  * @xposition: pixel x-position of divider, a negative values
2050  *                         of a component mean that the position is unset.
2051  *
2052  * Sets the x-position of the divider between the four panes.
2053  **/
2054 void
2055 gtk_xpaned_set_position_x (GtkXPaned * xpaned, gint xposition)
2056 {
2057   GObject *object;
2058
2059   g_return_if_fail (GTK_IS_XPANED (xpaned));
2060
2061   /* if any child is currently maximized, jump right back */
2062   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
2063       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
2064       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
2065       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2066     return;
2067
2068   object = G_OBJECT (xpaned);
2069
2070   if (xposition >= 0)
2071     {
2072       /* We don't clamp here - the assumption is that
2073        * if the total allocation changes at the same time
2074        * as the position, the position set is with reference
2075        * to the new total size. If only the position changes,
2076        * then clamping will occur in gtk_paned_compute_position()
2077        */
2078
2079       xpaned->top_left_child_size.width = xposition;
2080       xpaned->position_set = TRUE;
2081     }
2082   else
2083     {
2084       xpaned->position_set = FALSE;
2085     }
2086
2087   g_object_freeze_notify (object);
2088   g_object_notify (object, "x-position");
2089   g_object_notify (object, "position-set");
2090   g_object_thaw_notify (object);
2091
2092   gtk_widget_queue_resize (GTK_WIDGET (xpaned));
2093 }
2094
2095 /**
2096  * gtk_xpaned_set_position_y:
2097  * @paned: a #GtkXPaned widget
2098  * @yposition: pixel y-position of divider, a negative values
2099  *                         of a component mean that the position is unset.
2100  *
2101  * Sets the y-position of the divider between the four panes.
2102  **/
2103 void
2104 gtk_xpaned_set_position_y (GtkXPaned * xpaned, gint yposition)
2105 {
2106   GObject *object;
2107
2108   g_return_if_fail (GTK_IS_XPANED (xpaned));
2109
2110   /* if any child is currently maximized, jump right back */
2111   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
2112       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
2113       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
2114       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2115     return;
2116
2117   object = G_OBJECT (xpaned);
2118
2119   if (yposition >= 0)
2120     {
2121       /* We don't clamp here - the assumption is that
2122        * if the total allocation changes at the same time
2123        * as the position, the position set is with reference
2124        * to the new total size. If only the position changes,
2125        * then clamping will occur in gtk_paned_compute_position()
2126        */
2127
2128       xpaned->top_left_child_size.height = yposition;
2129       xpaned->position_set = TRUE;
2130     }
2131   else
2132     {
2133       xpaned->position_set = FALSE;
2134     }
2135
2136   g_object_freeze_notify (object);
2137   g_object_notify (object, "y-position");
2138   g_object_notify (object, "position-set");
2139   g_object_thaw_notify (object);
2140
2141   gtk_widget_queue_resize (GTK_WIDGET (xpaned));
2142 }
2143
2144 /* this call is private and only intended for internal use! */
2145 void
2146 gtk_xpaned_save_unmaximized_x (GtkXPaned * xpaned)
2147 {
2148   xpaned->unmaximized_position.x = gtk_xpaned_get_position_x (xpaned);
2149 }
2150
2151 /* this call is private and only intended for internal use! */
2152 void
2153 gtk_xpaned_save_unmaximized_y (GtkXPaned * xpaned)
2154 {
2155   xpaned->unmaximized_position.y = gtk_xpaned_get_position_y (xpaned);
2156 }
2157
2158 /* this call is private and only intended for internal use! */
2159 gint
2160 gtk_xpaned_fetch_unmaximized_x (GtkXPaned * xpaned)
2161 {
2162   return xpaned->unmaximized_position.x;
2163 }
2164
2165 /* this call is private and only intended for internal use! */
2166 gint
2167 gtk_xpaned_fetch_unmaximized_y (GtkXPaned * xpaned)
2168 {
2169   return xpaned->unmaximized_position.y;
2170 }
2171
2172 /**
2173  * gtk_xpaned_get_top_left_child:
2174  * @xpaned: a #GtkXPaned widget
2175  *
2176  * Obtains the top-left child of the xpaned widget.
2177  *
2178  * Return value: top-left child, or %NULL if it is not set.
2179  *
2180  * Since: 2.4
2181  **/
2182 GtkWidget *
2183 gtk_xpaned_get_top_left_child (GtkXPaned * xpaned)
2184 {
2185   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2186
2187   return xpaned->top_left_child;
2188 }
2189
2190 /**
2191  * gtk_xpaned_get_top_right_child:
2192  * @xpaned: a #GtkXPaned widget
2193  *
2194  * Obtains the top-right child of the xpaned widget.
2195  *
2196  * Return value: top-right child, or %NULL if it is not set.
2197  *
2198  * Since: 2.4
2199  **/
2200 GtkWidget *
2201 gtk_xpaned_get_top_right_child (GtkXPaned * xpaned)
2202 {
2203   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2204
2205   return xpaned->top_right_child;
2206 }
2207
2208 /**
2209  * gtk_xpaned_get_bottom_left_child:
2210  * @xpaned: a #GtkXPaned widget
2211  *
2212  * Obtains the bottom-left child of the xpaned widget.
2213  *
2214  * Return value: bottom-left child, or %NULL if it is not set.
2215  *
2216  * Since: 2.4
2217  **/
2218 GtkWidget *
2219 gtk_xpaned_get_bottom_left_child (GtkXPaned * xpaned)
2220 {
2221   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2222
2223   return xpaned->bottom_left_child;
2224 }
2225
2226 /**
2227  * gtk_xpaned_get_bottom_right_child:
2228  * @xpaned: a #GtkXPaned widget
2229  *
2230  * Obtains the bottom-right child of the xpaned widget.
2231  *
2232  * Return value: bottom-right child, or %NULL if it is not set.
2233  *
2234  * Since: 2.4
2235  **/
2236 GtkWidget *
2237 gtk_xpaned_get_bottom_right_child (GtkXPaned * xpaned)
2238 {
2239   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2240
2241   return xpaned->bottom_right_child;
2242 }
2243
2244 gboolean
2245 gtk_xpaned_maximize_top_left (GtkXPaned * xpaned, gboolean maximize)
2246 {
2247   if (maximize)
2248     {
2249       /* see if any child is already maximized */
2250       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2251           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2252           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2253           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2254         {
2255           /* save current position */
2256           gtk_xpaned_save_unmaximized_x (xpaned);
2257           gtk_xpaned_save_unmaximized_y (xpaned);
2258
2259           /* set new maximized position */
2260           gtk_xpaned_set_position_x (xpaned, xpaned->max_position.x);
2261           gtk_xpaned_set_position_y (xpaned, xpaned->max_position.y);
2262
2263           /* mark maximized flag for top-left child */
2264           xpaned->maximized[GTK_XPANED_TOP_LEFT] = TRUE;
2265
2266           return TRUE;
2267         }
2268       /* already one child maximized, report error */
2269       else
2270         return FALSE;
2271     }
2272   else
2273     {
2274       /* verify that top-left child is really currently maximized */
2275       if (xpaned->maximized[GTK_XPANED_TOP_LEFT])
2276         {
2277           /* clear maximized flat for top-left child */
2278           xpaned->maximized[GTK_XPANED_TOP_LEFT] = FALSE;
2279
2280           /* restore unmaximized position */
2281           gtk_xpaned_set_position_x (xpaned,
2282                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2283           gtk_xpaned_set_position_y (xpaned,
2284                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2285
2286           return TRUE;
2287         }
2288       /* top-left child is currently not maximized, report error */
2289       else
2290         return FALSE;
2291     }
2292 }
2293
2294 gboolean
2295 gtk_xpaned_maximize_top_right (GtkXPaned * xpaned, gboolean maximize)
2296 {
2297   if (maximize)
2298     {
2299       /* see if any child is already maximized */
2300       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2301           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2302           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2303           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2304         {
2305           /* save current position */
2306           gtk_xpaned_save_unmaximized_x (xpaned);
2307           gtk_xpaned_save_unmaximized_y (xpaned);
2308
2309           /* set new maximized position */
2310           gtk_xpaned_set_position_x (xpaned, xpaned->min_position.x);
2311           gtk_xpaned_set_position_y (xpaned, xpaned->max_position.y);
2312
2313           /* mark maximized flag for top-right child */
2314           xpaned->maximized[GTK_XPANED_TOP_RIGHT] = TRUE;
2315
2316           return TRUE;
2317         }
2318       /* already one child maximized, report error */
2319       else
2320         return FALSE;
2321     }
2322   else
2323     {
2324       /* verify that top-right child is really currently maximized */
2325       if (xpaned->maximized[GTK_XPANED_TOP_RIGHT])
2326         {
2327           /* clear maximized flat for top-right child */
2328           xpaned->maximized[GTK_XPANED_TOP_RIGHT] = FALSE;
2329
2330           /* restore unmaximized position */
2331           gtk_xpaned_set_position_x (xpaned,
2332                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2333           gtk_xpaned_set_position_y (xpaned,
2334                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2335
2336           return TRUE;
2337         }
2338       /* top-right child is currently not maximized, report error */
2339       else
2340         return FALSE;
2341     }
2342 }
2343
2344 gboolean
2345 gtk_xpaned_maximize_bottom_left (GtkXPaned * xpaned, gboolean maximize)
2346 {
2347   if (maximize)
2348     {
2349       /* see if any child is already maximized */
2350       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2351           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2352           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2353           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2354         {
2355           /* save current position */
2356           gtk_xpaned_save_unmaximized_x (xpaned);
2357           gtk_xpaned_save_unmaximized_y (xpaned);
2358
2359           /* set new maximized position */
2360           gtk_xpaned_set_position_x (xpaned, xpaned->max_position.x);
2361           gtk_xpaned_set_position_y (xpaned, xpaned->min_position.y);
2362
2363           /* mark maximized flag for bottom-left child */
2364           xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] = TRUE;
2365
2366           return TRUE;
2367         }
2368       /* already one child maximized, report error */
2369       else
2370         return FALSE;
2371     }
2372   else
2373     {
2374       /* verify that bottom-left child is really currently maximized */
2375       if (xpaned->maximized[GTK_XPANED_BOTTOM_LEFT])
2376         {
2377           /* clear maximized flat for bottom-left child */
2378           xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] = FALSE;
2379
2380           /* restore unmaximized position */
2381           gtk_xpaned_set_position_x (xpaned,
2382                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2383           gtk_xpaned_set_position_y (xpaned,
2384                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2385
2386           return TRUE;
2387         }
2388       /* bottom-left child is currently not maximized, report error */
2389       else
2390         return FALSE;
2391     }
2392 }
2393
2394 gboolean
2395 gtk_xpaned_maximize_bottom_right (GtkXPaned * xpaned, gboolean maximize)
2396 {
2397   if (maximize)
2398     {
2399       /* see if any child is already maximized */
2400       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2401           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2402           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2403           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2404         {
2405           /* save current position */
2406           gtk_xpaned_save_unmaximized_x (xpaned);
2407           gtk_xpaned_save_unmaximized_y (xpaned);
2408
2409           /* set new maximized position */
2410           gtk_xpaned_set_position_x (xpaned, xpaned->min_position.x);
2411           gtk_xpaned_set_position_y (xpaned, xpaned->min_position.y);
2412
2413           /* mark maximized flag for bottom-right child */
2414           xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT] = TRUE;
2415
2416           return TRUE;
2417         }
2418       /* already one child maximized, report error */
2419       else
2420         return FALSE;
2421     }
2422   else
2423     {
2424       /* verify that bottom-right child is really currently maximized */
2425       if (xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2426         {
2427           /* clear maximized flat for bottom-right child */
2428           xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT] = FALSE;
2429
2430           /* restore unmaximized position */
2431           gtk_xpaned_set_position_x (xpaned,
2432                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2433           gtk_xpaned_set_position_y (xpaned,
2434                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2435
2436           return TRUE;
2437         }
2438       /* bottom-right child is currently not maximized, report error */
2439       else
2440         return FALSE;
2441     }
2442 }
2443
2444 void
2445 gtk_xpaned_compute_position (GtkXPaned * xpaned,
2446                              const GtkAllocation * allocation,
2447                              GtkRequisition * top_left_child_req,
2448                              GtkRequisition * top_right_child_req,
2449                              GtkRequisition * bottom_left_child_req,
2450                              GtkRequisition * bottom_right_child_req)
2451 {
2452   GdkPoint old_position;
2453   GdkPoint old_min_position;
2454   GdkPoint old_max_position;
2455   gint handle_size;
2456   gint border_width = gtk_container_get_border_width (GTK_CONTAINER (xpaned));
2457
2458   g_return_if_fail (GTK_IS_XPANED (xpaned));
2459
2460   old_position.x = xpaned->top_left_child_size.width;
2461   old_position.y = xpaned->top_left_child_size.height;
2462   old_min_position.x = xpaned->min_position.x;
2463   old_min_position.y = xpaned->min_position.y;
2464   old_max_position.x = xpaned->max_position.x;
2465   old_max_position.y = xpaned->max_position.y;
2466
2467   xpaned->min_position.x =
2468     xpaned->top_left_child_shrink ? 0 : top_left_child_req->width;
2469   xpaned->min_position.y =
2470     xpaned->top_left_child_shrink ? 0 : top_left_child_req->height;
2471
2472   gtk_widget_style_get (GTK_WIDGET (xpaned), "handle-size", &handle_size,
2473                         NULL);
2474
2475   xpaned->max_position.x = allocation->width - 2 * border_width - handle_size;
2476   xpaned->max_position.y =
2477     allocation->height - 2 * border_width - handle_size;
2478   if (!xpaned->top_left_child_shrink)
2479     xpaned->max_position.x =
2480       MAX (1, xpaned->max_position.x - top_left_child_req->width);
2481   xpaned->max_position.x =
2482     MAX (xpaned->min_position.x, xpaned->max_position.x);
2483
2484   if (!xpaned->position_set)
2485     {
2486       if (xpaned->top_left_child_resize && !xpaned->top_right_child_resize)
2487         {
2488           xpaned->top_left_child_size.width =
2489             MAX (0, allocation->width - top_right_child_req->width);
2490           xpaned->top_left_child_size.height =
2491             MAX (0, allocation->height - top_right_child_req->height);
2492         }
2493       else if (!xpaned->top_left_child_resize
2494                && xpaned->top_right_child_resize)
2495         {
2496           xpaned->top_left_child_size.width = top_left_child_req->width;
2497           xpaned->top_left_child_size.height = top_left_child_req->height;
2498         }
2499       else
2500         {
2501           xpaned->top_left_child_size.width = allocation->width * 0.5 + 0.5;
2502           xpaned->top_left_child_size.height = allocation->height * 0.5 + 0.5;
2503         }
2504     }
2505   else
2506     {
2507       /* If the position was set before the initial allocation.
2508       ** (paned->last_allocation <= 0) just clamp it and leave it. */
2509       if (xpaned->last_allocation.width > 0)
2510         {
2511           if (xpaned->top_left_child_resize
2512               && !xpaned->top_right_child_resize)
2513             {
2514               xpaned->top_left_child_size.width += allocation->width
2515                 - xpaned->last_allocation.width;
2516
2517               xpaned->top_left_child_size.height += allocation->height
2518                 - xpaned->last_allocation.height;
2519             }
2520           else
2521             if (!
2522                 (!xpaned->top_left_child_resize
2523                  && xpaned->top_right_child_resize))
2524               {
2525                 xpaned->top_left_child_size.width = allocation->width
2526                   * ((gdouble) xpaned->top_left_child_size.width /
2527                      (xpaned->last_allocation.width)) + 0.5;
2528
2529                 xpaned->top_left_child_size.height = allocation->height
2530                   * ((gdouble) xpaned->top_left_child_size.height /
2531                      (xpaned->last_allocation.height)) + 0.5;
2532               }
2533         }
2534       if (xpaned->last_allocation.height > 0)
2535         {
2536           if (xpaned->top_left_child_resize
2537               && !xpaned->top_right_child_resize)
2538             {
2539               xpaned->top_left_child_size.width +=
2540                 allocation->width - xpaned->last_allocation.width;
2541               xpaned->top_left_child_size.height +=
2542                 allocation->height - xpaned->last_allocation.height;
2543             }
2544           else
2545             if (!
2546                 (!xpaned->top_left_child_resize
2547                  && xpaned->top_right_child_resize))
2548               {
2549                 xpaned->top_left_child_size.width =
2550                   allocation->width *
2551                   ((gdouble) xpaned->top_left_child_size.width /
2552                    (xpaned->last_allocation.width)) + 0.5;
2553                 xpaned->top_left_child_size.height =
2554                   allocation->height *
2555                   ((gdouble) xpaned->top_left_child_size.height /
2556                    (xpaned->last_allocation.height)) + 0.5;
2557               }
2558         }
2559
2560     }
2561
2562   xpaned->top_left_child_size.width =
2563     CLAMP (xpaned->top_left_child_size.width, xpaned->min_position.x,
2564            xpaned->max_position.x);
2565   xpaned->top_left_child_size.height =
2566     CLAMP (xpaned->top_left_child_size.height, xpaned->min_position.y,
2567            xpaned->max_position.y);
2568
2569   xpaned->top_right_child_size.width =
2570     CLAMP (xpaned->top_right_child_size.width, xpaned->min_position.x,
2571            xpaned->max_position.x);
2572   xpaned->top_right_child_size.height =
2573     CLAMP (xpaned->top_right_child_size.height, xpaned->min_position.y,
2574            xpaned->max_position.y);
2575
2576   xpaned->bottom_left_child_size.width =
2577     CLAMP (xpaned->bottom_left_child_size.width, xpaned->min_position.x,
2578            xpaned->max_position.x);
2579   xpaned->bottom_left_child_size.height =
2580     CLAMP (xpaned->bottom_left_child_size.height, xpaned->min_position.y,
2581            xpaned->max_position.y);
2582
2583   xpaned->bottom_right_child_size.width =
2584     CLAMP (xpaned->bottom_right_child_size.width, xpaned->min_position.x,
2585            xpaned->max_position.x);
2586   xpaned->bottom_right_child_size.height =
2587     CLAMP (xpaned->bottom_right_child_size.height, xpaned->min_position.y,
2588            xpaned->max_position.y);
2589
2590   gtk_widget_set_child_visible (xpaned->top_left_child, TRUE);
2591   gtk_widget_set_child_visible (xpaned->top_right_child, TRUE);
2592   gtk_widget_set_child_visible (xpaned->bottom_left_child, TRUE);
2593   gtk_widget_set_child_visible (xpaned->bottom_right_child, TRUE);
2594
2595   g_object_freeze_notify (G_OBJECT (xpaned));
2596
2597   if (xpaned->top_left_child_size.width != old_position.x)
2598     g_object_notify (G_OBJECT (xpaned), "x-position");
2599   if (xpaned->top_left_child_size.height != old_position.y)
2600     g_object_notify (G_OBJECT (xpaned), "y-position");
2601
2602   if (xpaned->top_right_child_size.width != old_position.x)
2603     g_object_notify (G_OBJECT (xpaned), "x-position");
2604   if (xpaned->top_right_child_size.height != old_position.y)
2605     g_object_notify (G_OBJECT (xpaned), "y-position");
2606
2607   if (xpaned->bottom_left_child_size.width != old_position.x)
2608     g_object_notify (G_OBJECT (xpaned), "x-position");
2609   if (xpaned->bottom_left_child_size.height != old_position.y)
2610     g_object_notify (G_OBJECT (xpaned), "y-position");
2611
2612   if (xpaned->bottom_right_child_size.width != old_position.x)
2613     g_object_notify (G_OBJECT (xpaned), "x-position");
2614   if (xpaned->bottom_right_child_size.height != old_position.y)
2615     g_object_notify (G_OBJECT (xpaned), "y-position");
2616
2617   if (xpaned->min_position.x != old_min_position.x)
2618     g_object_notify (G_OBJECT (xpaned), "min-x-position");
2619   if (xpaned->min_position.y != old_min_position.y)
2620     g_object_notify (G_OBJECT (xpaned), "min-y-position");
2621
2622   if (xpaned->max_position.x != old_max_position.x)
2623     g_object_notify (G_OBJECT (xpaned), "max-y-position");
2624   if (xpaned->max_position.y != old_max_position.y)
2625     g_object_notify (G_OBJECT (xpaned), "max-y-position");
2626
2627   g_object_thaw_notify (G_OBJECT (xpaned));
2628
2629   xpaned->last_allocation.width = allocation->width;
2630   xpaned->last_allocation.height = allocation->height;
2631 }
2632
2633 static void
2634 gtk_xpaned_set_saved_focus (GtkXPaned * xpaned, GtkWidget * widget)
2635 {
2636   if (xpaned->priv->saved_focus)
2637     g_object_remove_weak_pointer (G_OBJECT (xpaned->priv->saved_focus),
2638                                   (gpointer *) & (xpaned->priv->saved_focus));
2639
2640   xpaned->priv->saved_focus = widget;
2641
2642   if (xpaned->priv->saved_focus)
2643     g_object_add_weak_pointer (G_OBJECT (xpaned->priv->saved_focus),
2644                                (gpointer *) & (xpaned->priv->saved_focus));
2645 }
2646
2647 static void
2648 gtk_xpaned_set_first_xpaned (GtkXPaned * xpaned, GtkXPaned * first_xpaned)
2649 {
2650   if (xpaned->priv->first_xpaned)
2651     g_object_remove_weak_pointer (G_OBJECT (xpaned->priv->first_xpaned),
2652                                   (gpointer *) & (xpaned->priv->
2653                                                   first_xpaned));
2654
2655   xpaned->priv->first_xpaned = first_xpaned;
2656
2657   if (xpaned->priv->first_xpaned)
2658     g_object_add_weak_pointer (G_OBJECT (xpaned->priv->first_xpaned),
2659                                (gpointer *) & (xpaned->priv->first_xpaned));
2660 }
2661
2662 static void
2663 gtk_xpaned_set_last_top_left_child_focus (GtkXPaned * xpaned,
2664                                           GtkWidget * widget)
2665 {
2666   if (xpaned->last_top_left_child_focus)
2667     g_object_remove_weak_pointer (G_OBJECT
2668                                   (xpaned->last_top_left_child_focus),
2669                                   (gpointer *) & (xpaned->
2670                                                   last_top_left_child_focus));
2671
2672   xpaned->last_top_left_child_focus = widget;
2673
2674   if (xpaned->last_top_left_child_focus)
2675     g_object_add_weak_pointer (G_OBJECT (xpaned->last_top_left_child_focus),
2676                                (gpointer *) & (xpaned->
2677                                                last_top_left_child_focus));
2678 }
2679
2680 static void
2681 gtk_xpaned_set_last_top_right_child_focus (GtkXPaned * xpaned,
2682                                            GtkWidget * widget)
2683 {
2684   if (xpaned->last_top_right_child_focus)
2685     g_object_remove_weak_pointer (G_OBJECT
2686                                   (xpaned->last_top_right_child_focus),
2687                                   (gpointer *) & (xpaned->
2688                                                   last_top_right_child_focus));
2689
2690   xpaned->last_top_right_child_focus = widget;
2691
2692   if (xpaned->last_top_right_child_focus)
2693     g_object_add_weak_pointer (G_OBJECT (xpaned->last_top_right_child_focus),
2694                                (gpointer *) & (xpaned->
2695                                                last_top_right_child_focus));
2696 }
2697
2698 static void
2699 gtk_xpaned_set_last_bottom_left_child_focus (GtkXPaned * xpaned,
2700                                              GtkWidget * widget)
2701 {
2702   if (xpaned->last_bottom_left_child_focus)
2703     g_object_remove_weak_pointer (G_OBJECT
2704                                   (xpaned->last_bottom_left_child_focus),
2705                                   (gpointer *) & (xpaned->
2706                                                   last_bottom_left_child_focus));
2707
2708   xpaned->last_bottom_left_child_focus = widget;
2709
2710   if (xpaned->last_bottom_left_child_focus)
2711     g_object_add_weak_pointer (G_OBJECT
2712                                (xpaned->last_bottom_left_child_focus),
2713                                (gpointer *) & (xpaned->
2714                                                last_bottom_left_child_focus));
2715 }
2716
2717 static void
2718 gtk_xpaned_set_last_bottom_right_child_focus (GtkXPaned * xpaned,
2719                                               GtkWidget * widget)
2720 {
2721   if (xpaned->last_bottom_right_child_focus)
2722     g_object_remove_weak_pointer (G_OBJECT
2723                                   (xpaned->last_bottom_right_child_focus),
2724                                   (gpointer *) & (xpaned->
2725                                                   last_bottom_right_child_focus));
2726
2727   xpaned->last_bottom_right_child_focus = widget;
2728
2729   if (xpaned->last_bottom_right_child_focus)
2730     g_object_add_weak_pointer (G_OBJECT
2731                                (xpaned->last_bottom_right_child_focus),
2732                                (gpointer *) & (xpaned->
2733                                                last_bottom_right_child_focus));
2734 }
2735
2736 static GtkWidget *
2737 xpaned_get_focus_widget (GtkXPaned * xpaned)
2738 {
2739   GtkWidget *toplevel;
2740
2741   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
2742   if (gtk_widget_is_toplevel (toplevel))
2743     return gtk_window_get_focus (GTK_WINDOW (toplevel));
2744
2745   return NULL;
2746 }
2747
2748 static void
2749 gtk_xpaned_set_focus_child (GtkContainer * container, GtkWidget * focus_child)
2750 {
2751   GtkXPaned *xpaned;
2752
2753   g_return_if_fail (GTK_IS_XPANED (container));
2754
2755   xpaned = GTK_XPANED (container);
2756
2757   if (focus_child == NULL)
2758     {
2759       GtkWidget *last_focus;
2760       GtkWidget *w;
2761
2762       last_focus = xpaned_get_focus_widget (xpaned);
2763
2764       if (last_focus)
2765         {
2766           /* If there is one or more paned widgets between us and the
2767            * focus widget, we want the topmost of those as last_focus
2768            */
2769           for (w = last_focus; w != GTK_WIDGET (xpaned); w = gtk_widget_get_parent (w))
2770             if (GTK_IS_XPANED (w))
2771               last_focus = w;
2772
2773           if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2774             gtk_xpaned_set_last_top_left_child_focus (xpaned, last_focus);
2775           else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2776             gtk_xpaned_set_last_top_right_child_focus (xpaned, last_focus);
2777           else if (gtk_container_get_focus_child (container) == xpaned->bottom_left_child)
2778             gtk_xpaned_set_last_bottom_left_child_focus (xpaned, last_focus);
2779           else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2780             gtk_xpaned_set_last_bottom_right_child_focus (xpaned, last_focus);
2781         }
2782     }
2783
2784   if (parent_class->set_focus_child)
2785     (*parent_class->set_focus_child) (container, focus_child);
2786 }
2787
2788 static void
2789 gtk_xpaned_get_cycle_chain (GtkXPaned * xpaned,
2790                             GtkDirectionType direction, GList ** widgets)
2791 {
2792   GtkContainer *container = GTK_CONTAINER (xpaned);
2793   GtkWidget *ancestor = NULL;
2794   GList *temp_list = NULL;
2795   GList *list;
2796
2797   if (xpaned->in_recursion)
2798     return;
2799
2800   g_assert (widgets != NULL);
2801
2802   if (xpaned->last_top_left_child_focus &&
2803       !gtk_widget_is_ancestor (xpaned->last_top_left_child_focus,
2804                                GTK_WIDGET (xpaned)))
2805     {
2806       gtk_xpaned_set_last_top_left_child_focus (xpaned, NULL);
2807     }
2808
2809   if (xpaned->last_top_right_child_focus &&
2810       !gtk_widget_is_ancestor (xpaned->last_top_right_child_focus,
2811                                GTK_WIDGET (xpaned)))
2812     {
2813       gtk_xpaned_set_last_top_right_child_focus (xpaned, NULL);
2814     }
2815
2816   if (xpaned->last_bottom_left_child_focus &&
2817       !gtk_widget_is_ancestor (xpaned->last_bottom_left_child_focus,
2818                                GTK_WIDGET (xpaned)))
2819     {
2820       gtk_xpaned_set_last_bottom_left_child_focus (xpaned, NULL);
2821     }
2822
2823   if (xpaned->last_bottom_right_child_focus &&
2824       !gtk_widget_is_ancestor (xpaned->last_bottom_right_child_focus,
2825                                GTK_WIDGET (xpaned)))
2826     {
2827       gtk_xpaned_set_last_bottom_right_child_focus (xpaned, NULL);
2828     }
2829
2830   if (gtk_widget_get_parent (GTK_WIDGET (xpaned)))
2831     ancestor = gtk_widget_get_ancestor (gtk_widget_get_parent (GTK_WIDGET (xpaned)),
2832                                         GTK_TYPE_XPANED);
2833
2834   /* The idea here is that temp_list is a list of widgets we want to cycle
2835    * to. The list is prioritized so that the first element is our first
2836    * choice, the next our second, and so on.
2837    *
2838    * We can't just use g_list_reverse(), because we want to try
2839    * paned->last_child?_focus before paned->child?, both when we
2840    * are going forward and backward.
2841    */
2842   if (direction == GTK_DIR_TAB_FORWARD)
2843     {
2844       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2845         {
2846           temp_list =
2847             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2848           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2849           temp_list = g_list_append (temp_list, ancestor);
2850         }
2851       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2852         {
2853           temp_list = g_list_append (temp_list, ancestor);
2854           temp_list =
2855             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2856           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2857         }
2858       else if (gtk_container_get_focus_child (container) == xpaned->bottom_left_child)
2859         {
2860           temp_list = g_list_append (temp_list, ancestor);
2861           temp_list =
2862             g_list_append (temp_list, xpaned->last_bottom_right_child_focus);
2863           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2864         }
2865       else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2866         {
2867           temp_list = g_list_append (temp_list, ancestor);
2868           temp_list =
2869             g_list_append (temp_list, xpaned->last_top_left_child_focus);
2870           temp_list = g_list_append (temp_list, xpaned->top_left_child);
2871         }
2872       else
2873         {
2874           temp_list =
2875             g_list_append (temp_list, xpaned->last_top_left_child_focus);
2876           temp_list = g_list_append (temp_list, xpaned->top_left_child);
2877           temp_list =
2878             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2879           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2880           temp_list =
2881             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2882           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2883           temp_list =
2884             g_list_append (temp_list, xpaned->last_bottom_right_child_focus);
2885           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2886           temp_list = g_list_append (temp_list, ancestor);
2887         }
2888     }
2889   else
2890     {
2891       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2892         {
2893           temp_list = g_list_append (temp_list, ancestor);
2894           temp_list =
2895             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2896           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2897         }
2898       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2899         {
2900           temp_list =
2901             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2902           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2903           temp_list = g_list_append (temp_list, ancestor);
2904         }
2905       else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2906         {
2907           temp_list =
2908             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2909           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2910           temp_list = g_list_append (temp_list, ancestor);
2911         }
2912       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2913         {
2914           temp_list =
2915             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2916           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2917           temp_list = g_list_append (temp_list, ancestor);
2918         }
2919       else
2920         {
2921           temp_list =
2922             g_list_append (temp_list, xpaned->last_bottom_right_child_focus);
2923           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2924           temp_list =
2925             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2926           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2927           temp_list =
2928             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2929           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2930           temp_list =
2931             g_list_append (temp_list, xpaned->last_top_left_child_focus);
2932           temp_list = g_list_append (temp_list, xpaned->top_left_child);
2933           temp_list = g_list_append (temp_list, ancestor);
2934         }
2935     }
2936
2937   /* Walk the list and expand all the paned widgets. */
2938   for (list = temp_list; list != NULL; list = list->next)
2939     {
2940       GtkWidget *widget = list->data;
2941
2942       if (widget)
2943         {
2944           if (GTK_IS_XPANED (widget))
2945             {
2946               xpaned->in_recursion = TRUE;
2947               gtk_xpaned_get_cycle_chain (GTK_XPANED (widget),
2948                                           direction, widgets);
2949               xpaned->in_recursion = FALSE;
2950             }
2951           else
2952             {
2953               *widgets = g_list_append (*widgets, widget);
2954             }
2955         }
2956     }
2957
2958   g_list_free (temp_list);
2959 }
2960
2961 static gboolean
2962 gtk_xpaned_cycle_child_focus (GtkXPaned * xpaned, gboolean reversed)
2963 {
2964   GList *cycle_chain = NULL;
2965   GList *list;
2966
2967   GtkDirectionType direction =
2968     reversed ? GTK_DIR_TAB_BACKWARD : GTK_DIR_TAB_FORWARD;
2969
2970   /* ignore f6 if the handle is focused */
2971   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
2972     return TRUE;
2973
2974   /* we can't just let the event propagate up the hierarchy,
2975    * because the paned will want to cycle focus _unless_ an
2976    * ancestor paned handles the event
2977    */
2978   gtk_xpaned_get_cycle_chain (xpaned, direction, &cycle_chain);
2979
2980   for (list = cycle_chain; list != NULL; list = list->next)
2981     if (gtk_widget_child_focus (GTK_WIDGET (list->data), direction))
2982       break;
2983
2984   g_list_free (cycle_chain);
2985
2986   return TRUE;
2987 }
2988
2989 static void
2990 get_child_xpanes (GtkWidget * widget, GList ** xpanes)
2991 {
2992   if (GTK_IS_XPANED (widget))
2993     {
2994       GtkXPaned *xpaned = GTK_XPANED (widget);
2995
2996       get_child_xpanes (xpaned->top_left_child, xpanes);
2997       *xpanes = g_list_prepend (*xpanes, widget);
2998       get_child_xpanes (xpaned->top_right_child, xpanes);
2999       *xpanes = g_list_prepend (*xpanes, widget);
3000       get_child_xpanes (xpaned->bottom_left_child, xpanes);
3001       *xpanes = g_list_prepend (*xpanes, widget);
3002       get_child_xpanes (xpaned->bottom_right_child, xpanes);
3003     }
3004   else if (GTK_IS_CONTAINER (widget))
3005     {
3006       gtk_container_foreach (GTK_CONTAINER (widget),
3007                              (GtkCallback) get_child_xpanes, xpanes);
3008     }
3009 }
3010
3011 static GList *
3012 get_all_xpanes (GtkXPaned * xpaned)
3013 {
3014   GtkXPaned *topmost = NULL;
3015   GList *result = NULL;
3016   GtkWidget *w;
3017
3018   for (w = GTK_WIDGET (xpaned); w != NULL; w = gtk_widget_get_parent (w))
3019     {
3020       if (GTK_IS_XPANED (w))
3021         topmost = GTK_XPANED (w);
3022     }
3023
3024   g_assert (topmost);
3025
3026   get_child_xpanes (GTK_WIDGET (topmost), &result);
3027
3028   return g_list_reverse (result);
3029 }
3030
3031 static void
3032 gtk_xpaned_find_neighbours (GtkXPaned * xpaned,
3033                             GtkXPaned ** next, GtkXPaned ** prev)
3034 {
3035   GList *all_xpanes;
3036   GList *this_link;
3037
3038   all_xpanes = get_all_xpanes (xpaned);
3039   g_assert (all_xpanes);
3040
3041   this_link = g_list_find (all_xpanes, xpaned);
3042
3043   g_assert (this_link);
3044
3045   if (this_link->next)
3046     *next = this_link->next->data;
3047   else
3048     *next = all_xpanes->data;
3049
3050   if (this_link->prev)
3051     *prev = this_link->prev->data;
3052   else
3053     *prev = g_list_last (all_xpanes)->data;
3054
3055   g_list_free (all_xpanes);
3056 }
3057
3058 static gboolean
3059 gtk_xpaned_move_handle (GtkXPaned * xpaned, GtkScrollType scroll)
3060 {
3061   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3062     {
3063       GdkPoint old_position;
3064       GdkPoint new_position;
3065       gint increment;
3066
3067       enum
3068       {
3069         SINGLE_STEP_SIZE = 1,
3070         PAGE_STEP_SIZE = 75
3071       };
3072
3073       new_position.x = old_position.x = gtk_xpaned_get_position_x (xpaned);
3074       new_position.y = old_position.y = gtk_xpaned_get_position_y (xpaned);
3075       increment = 0;
3076
3077       switch (scroll)
3078         {
3079         case GTK_SCROLL_STEP_LEFT:
3080         case GTK_SCROLL_STEP_UP:
3081         case GTK_SCROLL_STEP_BACKWARD:
3082           increment = -SINGLE_STEP_SIZE;
3083           break;
3084
3085         case GTK_SCROLL_STEP_RIGHT:
3086         case GTK_SCROLL_STEP_DOWN:
3087         case GTK_SCROLL_STEP_FORWARD:
3088           increment = SINGLE_STEP_SIZE;
3089           break;
3090
3091         case GTK_SCROLL_PAGE_LEFT:
3092         case GTK_SCROLL_PAGE_UP:
3093         case GTK_SCROLL_PAGE_BACKWARD:
3094           increment = -PAGE_STEP_SIZE;
3095           break;
3096
3097         case GTK_SCROLL_PAGE_RIGHT:
3098         case GTK_SCROLL_PAGE_DOWN:
3099         case GTK_SCROLL_PAGE_FORWARD:
3100           increment = PAGE_STEP_SIZE;
3101           break;
3102
3103         case GTK_SCROLL_START:
3104           new_position.x = xpaned->min_position.x;
3105           new_position.y = xpaned->min_position.y;
3106           break;
3107
3108         case GTK_SCROLL_END:
3109           new_position.x = xpaned->max_position.x;
3110           new_position.y = xpaned->max_position.y;
3111           break;
3112
3113         default:
3114           break;
3115         }
3116
3117       if (increment)
3118         {
3119           if (is_rtl (xpaned))
3120             increment = -increment;
3121
3122           new_position.x = old_position.x + increment;
3123           new_position.y = old_position.y + increment;
3124         }
3125
3126       new_position.x = CLAMP (new_position.x,
3127                               xpaned->min_position.x, xpaned->max_position.x);
3128
3129       new_position.y = CLAMP (new_position.y,
3130                               xpaned->min_position.y, xpaned->max_position.y);
3131
3132       if (old_position.x != new_position.x)
3133         gtk_xpaned_set_position_x (xpaned, new_position.x);
3134
3135       if (old_position.y != new_position.y)
3136         gtk_xpaned_set_position_y (xpaned, new_position.y);
3137
3138       return TRUE;
3139     }
3140
3141   return FALSE;
3142 }
3143
3144 static void
3145 gtk_xpaned_restore_focus (GtkXPaned * xpaned)
3146 {
3147   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3148     {
3149       if (xpaned->priv->saved_focus &&
3150           gtk_widget_get_sensitive (xpaned->priv->saved_focus))
3151         {
3152           gtk_widget_grab_focus (xpaned->priv->saved_focus);
3153         }
3154       else
3155         {
3156           /* the saved focus is somehow not available for focusing,
3157            * try
3158            *   1) tabbing into the paned widget
3159            * if that didn't work,
3160            *   2) unset focus for the window if there is one
3161            */
3162
3163           if (!gtk_widget_child_focus
3164               (GTK_WIDGET (xpaned), GTK_DIR_TAB_FORWARD))
3165             {
3166               GtkWidget *toplevel =
3167                 gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
3168
3169               if (GTK_IS_WINDOW (toplevel))
3170                 gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
3171             }
3172         }
3173
3174       gtk_xpaned_set_saved_focus (xpaned, NULL);
3175       gtk_xpaned_set_first_xpaned (xpaned, NULL);
3176     }
3177 }
3178
3179 static gboolean
3180 gtk_xpaned_accept_position (GtkXPaned * xpaned)
3181 {
3182   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3183     {
3184       xpaned->original_position.x = -1;
3185       xpaned->original_position.y = -1;
3186       gtk_xpaned_restore_focus (xpaned);
3187
3188       return TRUE;
3189     }
3190
3191   return FALSE;
3192 }
3193
3194 static gboolean
3195 gtk_xpaned_cancel_position (GtkXPaned * xpaned)
3196 {
3197   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3198     {
3199       if (xpaned->original_position.x != -1)
3200         {
3201           gtk_xpaned_set_position_x (xpaned, xpaned->original_position.x);
3202           xpaned->original_position.x = -1;
3203         }
3204
3205       if (xpaned->original_position.y != -1)
3206         {
3207           gtk_xpaned_set_position_y (xpaned, xpaned->original_position.y);
3208           xpaned->original_position.y = -1;
3209         }
3210
3211       gtk_xpaned_restore_focus (xpaned);
3212       return TRUE;
3213     }
3214
3215   return FALSE;
3216 }
3217
3218 static gboolean
3219 gtk_xpaned_cycle_handle_focus (GtkXPaned * xpaned, gboolean reversed)
3220 {
3221   GtkXPaned *next;
3222   GtkXPaned *prev;
3223
3224   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3225     {
3226       GtkXPaned *focus = NULL;
3227
3228       if (!xpaned->priv->first_xpaned)
3229         {
3230           /* The first_pane has disappeared. As an ad-hoc solution,
3231            * we make the currently focused paned the first_paned. To the
3232            * user this will seem like the paned cycling has been reset.
3233            */
3234           gtk_xpaned_set_first_xpaned (xpaned, xpaned);
3235         }
3236
3237       gtk_xpaned_find_neighbours (xpaned, &next, &prev);
3238
3239       if (reversed && prev &&
3240           prev != xpaned && xpaned != xpaned->priv->first_xpaned)
3241         {
3242           focus = prev;
3243         }
3244       else if (!reversed &&
3245                next && next != xpaned && next != xpaned->priv->first_xpaned)
3246         {
3247           focus = next;
3248         }
3249       else
3250         {
3251           gtk_xpaned_accept_position (xpaned);
3252           return TRUE;
3253         }
3254
3255       g_assert (focus);
3256
3257       gtk_xpaned_set_saved_focus (focus, xpaned->priv->saved_focus);
3258       gtk_xpaned_set_first_xpaned (focus, xpaned->priv->first_xpaned);
3259
3260       gtk_xpaned_set_saved_focus (xpaned, NULL);
3261       gtk_xpaned_set_first_xpaned (xpaned, NULL);
3262
3263       gtk_widget_grab_focus (GTK_WIDGET (focus));
3264
3265       if (!gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3266         {
3267           xpaned->original_position.x = -1;
3268           xpaned->original_position.y = -1;
3269           focus->original_position.x = gtk_xpaned_get_position_x (focus);
3270           focus->original_position.y = gtk_xpaned_get_position_y (focus);
3271         }
3272     }
3273   else
3274     {
3275       GtkContainer *container = GTK_CONTAINER (xpaned);
3276       GtkXPaned *focus;
3277       GtkXPaned *first;
3278       GtkXPaned *prev;
3279       GtkXPaned *next;
3280       GtkWidget *toplevel;
3281
3282       gtk_xpaned_find_neighbours (xpaned, &next, &prev);
3283
3284       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
3285         {
3286           if (reversed)
3287             {
3288               focus = prev;
3289               first = xpaned;
3290             }
3291           else
3292             {
3293               focus = xpaned;
3294               first = xpaned;
3295             }
3296         }
3297       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
3298         {
3299           if (reversed)
3300             {
3301               focus = xpaned;
3302               first = next;
3303             }
3304           else
3305             {
3306               focus = next;
3307               first = next;
3308             }
3309         }
3310       else
3311         {
3312           /* Focus is not inside this xpaned, and we don't have focus.
3313            * Presumably this happened because the application wants us
3314            * to start keyboard navigating.
3315            */
3316           focus = xpaned;
3317
3318           if (reversed)
3319             first = xpaned;
3320           else
3321             first = next;
3322         }
3323
3324       toplevel = gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
3325
3326       if (GTK_IS_WINDOW (toplevel))
3327         gtk_xpaned_set_saved_focus (focus,
3328                                     gtk_window_get_focus (GTK_WINDOW (toplevel)));
3329       gtk_xpaned_set_first_xpaned (focus, first);
3330       focus->original_position.x = gtk_xpaned_get_position_x (focus);
3331       focus->original_position.y = gtk_xpaned_get_position_y (focus);
3332
3333       gtk_widget_grab_focus (GTK_WIDGET (focus));
3334     }
3335
3336   return TRUE;
3337 }
3338
3339 static gboolean
3340 gtk_xpaned_toggle_handle_focus (GtkXPaned * xpaned)
3341 {
3342   /* This function/signal has the wrong name. It is called when you
3343    * press Tab or Shift-Tab and what we do is act as if
3344    * the user pressed Return and then Tab or Shift-Tab
3345    */
3346   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3347     gtk_xpaned_accept_position (xpaned);
3348
3349   return FALSE;
3350 }
3351
3352 /*#define __GTK_XPANED_C__*/
3353 /*#include "gtkaliasdef.c"*/