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 childen, 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   gint handle_size;
1472   GtkRequisition size;
1473   GtkAllocation allocation;
1474   gtk_widget_get_allocation (GTK_WIDGET (xpaned), &allocation);
1475
1476   gtk_widget_get_pointer (GTK_WIDGET (xpaned), &pos.x, &pos.y);
1477
1478   if (xpaned->in_drag_vert)
1479     {
1480       pos.y -= xpaned->drag_pos.y;
1481
1482       if (is_rtl (xpaned))
1483         {
1484           gtk_widget_style_get (GTK_WIDGET (xpaned),
1485                                 "handle-size", &handle_size, NULL);
1486
1487           size.height = allocation.height - pos.y - handle_size;
1488         }
1489       else
1490         {
1491           size.height = pos.y;
1492         }
1493
1494       size.height -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1495
1496       size.height =
1497         CLAMP (size.height, xpaned->min_position.y, xpaned->max_position.y);
1498
1499       if (size.height != xpaned->top_left_child_size.height)
1500         gtk_xpaned_set_position_y (xpaned, size.height);
1501     }
1502
1503   if (xpaned->in_drag_horiz)
1504     {
1505       pos.x -= xpaned->drag_pos.x;
1506
1507       if (is_rtl (xpaned))
1508         {
1509           gtk_widget_style_get (GTK_WIDGET (xpaned),
1510                                 "handle-size", &handle_size, NULL);
1511
1512           size.width = allocation.width - pos.x - handle_size;
1513         }
1514       else
1515         {
1516           size.width = pos.x;
1517         }
1518
1519       size.width -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1520
1521       size.width =
1522         CLAMP (size.width, xpaned->min_position.x, xpaned->max_position.x);
1523
1524       if (size.width != xpaned->top_left_child_size.width)
1525         gtk_xpaned_set_position_x (xpaned, size.width);
1526     }
1527
1528   if (xpaned->in_drag_vert_and_horiz)
1529     {
1530       pos.x -= xpaned->drag_pos.x;
1531       pos.y -= xpaned->drag_pos.y;
1532
1533       if (is_rtl (xpaned))
1534         {
1535           gtk_widget_style_get (GTK_WIDGET (xpaned),
1536                                 "handle-size", &handle_size, NULL);
1537
1538           size.width = allocation.width - pos.x - handle_size;
1539           size.height = allocation.height - pos.y - handle_size;
1540         }
1541       else
1542         {
1543           size.width = pos.x;
1544           size.height = pos.y;
1545         }
1546
1547       size.width -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1548       size.height -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1549
1550       size.width =
1551         CLAMP (size.width, xpaned->min_position.x, xpaned->max_position.x);
1552       size.height =
1553         CLAMP (size.height, xpaned->min_position.y, xpaned->max_position.y);
1554
1555       if (size.width != xpaned->top_left_child_size.width)
1556         gtk_xpaned_set_position_x (xpaned, size.width);
1557
1558       if (size.height != xpaned->top_left_child_size.height)
1559         gtk_xpaned_set_position_y (xpaned, size.height);
1560     }
1561 }
1562
1563 static gboolean
1564 gtk_xpaned_enter (GtkWidget * widget, GdkEventCrossing * event)
1565 {
1566   GtkXPaned *xpaned = GTK_XPANED (widget);
1567
1568   if (xpaned->in_drag_vert ||
1569       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1570     update_drag (xpaned);
1571   else
1572     {
1573       xpaned->handle_prelit = TRUE;
1574
1575       gtk_widget_queue_draw_area (widget,
1576                                   xpaned->handle_pos_east.x,
1577                                   xpaned->handle_pos_east.y,
1578                                   xpaned->handle_pos_east.width,
1579                                   xpaned->handle_pos_east.height);
1580
1581       gtk_widget_queue_draw_area (widget,
1582                                   xpaned->handle_pos_west.x,
1583                                   xpaned->handle_pos_west.y,
1584                                   xpaned->handle_pos_west.width,
1585                                   xpaned->handle_pos_west.height);
1586
1587       gtk_widget_queue_draw_area (widget,
1588                                   xpaned->handle_pos_north.x,
1589                                   xpaned->handle_pos_north.y,
1590                                   xpaned->handle_pos_north.width,
1591                                   xpaned->handle_pos_north.height);
1592
1593       gtk_widget_queue_draw_area (widget,
1594                                   xpaned->handle_pos_south.x,
1595                                   xpaned->handle_pos_south.y,
1596                                   xpaned->handle_pos_south.width,
1597                                   xpaned->handle_pos_south.height);
1598
1599       gtk_widget_queue_draw_area (widget,
1600                                   xpaned->handle_pos_middle.x,
1601                                   xpaned->handle_pos_middle.y,
1602                                   xpaned->handle_pos_middle.width,
1603                                   xpaned->handle_pos_middle.height);
1604     }
1605
1606   return TRUE;
1607 }
1608
1609 static gboolean
1610 gtk_xpaned_leave (GtkWidget * widget, GdkEventCrossing * event)
1611 {
1612   GtkXPaned *xpaned = GTK_XPANED (widget);
1613
1614   if (xpaned->in_drag_vert ||
1615       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1616     update_drag (xpaned);
1617   else
1618     {
1619       xpaned->handle_prelit = FALSE;
1620
1621       gtk_widget_queue_draw_area (widget,
1622                                   xpaned->handle_pos_east.x,
1623                                   xpaned->handle_pos_east.y,
1624                                   xpaned->handle_pos_east.width,
1625                                   xpaned->handle_pos_east.height);
1626
1627       gtk_widget_queue_draw_area (widget,
1628                                   xpaned->handle_pos_west.x,
1629                                   xpaned->handle_pos_west.y,
1630                                   xpaned->handle_pos_west.width,
1631                                   xpaned->handle_pos_west.height);
1632
1633       gtk_widget_queue_draw_area (widget,
1634                                   xpaned->handle_pos_north.x,
1635                                   xpaned->handle_pos_north.y,
1636                                   xpaned->handle_pos_north.width,
1637                                   xpaned->handle_pos_north.height);
1638
1639       gtk_widget_queue_draw_area (widget,
1640                                   xpaned->handle_pos_south.x,
1641                                   xpaned->handle_pos_south.y,
1642                                   xpaned->handle_pos_south.width,
1643                                   xpaned->handle_pos_south.height);
1644
1645       gtk_widget_queue_draw_area (widget,
1646                                   xpaned->handle_pos_middle.x,
1647                                   xpaned->handle_pos_middle.y,
1648                                   xpaned->handle_pos_middle.width,
1649                                   xpaned->handle_pos_middle.height);
1650     }
1651
1652   return TRUE;
1653 }
1654
1655 static gboolean
1656 gtk_xpaned_focus (GtkWidget * widget, GtkDirectionType direction)
1657 {
1658   gboolean retval;
1659
1660   /* This is a hack, but how can this be done without
1661    * excessive cut-and-paste from gtkcontainer.c?
1662    */
1663
1664   gtk_widget_set_can_focus (GTK_WIDGET (widget), FALSE);
1665   retval = (*GTK_WIDGET_CLASS (parent_class)->focus) (widget, direction);
1666   gtk_widget_set_can_focus (GTK_WIDGET (widget), TRUE);
1667
1668   return retval;
1669 }
1670
1671 static gboolean
1672 gtk_xpaned_button_press (GtkWidget * widget, GdkEventButton * event)
1673 {
1674   GtkXPaned *xpaned = GTK_XPANED (widget);
1675
1676   /* if any child is currently maximized, jump right back */
1677   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
1678       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
1679       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
1680       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
1681     return FALSE;
1682
1683   /* if user is dragging the handles around */
1684   if (!xpaned->in_drag_vert_and_horiz &&
1685       event->window != xpaned->handle_east &&
1686       event->window != xpaned->handle_west &&
1687       event->window != xpaned->handle_north &&
1688       event->window != xpaned->handle_south &&
1689       event->window == xpaned->handle_middle && event->button == 1)
1690     {
1691       xpaned->in_drag_vert_and_horiz = TRUE;
1692
1693       /* We need a server grab here, not gtk_grab_add(), since
1694        * we don't want to pass events on to the widget's children */
1695       if (gdk_pointer_grab (xpaned->handle_middle,
1696                             FALSE,
1697                             GDK_POINTER_MOTION_HINT_MASK
1698                             | GDK_BUTTON1_MOTION_MASK
1699                             | GDK_BUTTON_RELEASE_MASK
1700                             | GDK_ENTER_NOTIFY_MASK
1701                             | GDK_LEAVE_NOTIFY_MASK,
1702                             NULL, NULL, event->time) == GDK_GRAB_SUCCESS)
1703         {
1704         }
1705
1706       xpaned->drag_pos.x = event->x;
1707       xpaned->drag_pos.y = event->y;
1708
1709       return TRUE;
1710     }
1711   else if (!xpaned->in_drag_vert &&
1712            event->window == xpaned->handle_east &&
1713            event->window != xpaned->handle_west &&
1714            event->window != xpaned->handle_north &&
1715            event->window != xpaned->handle_south &&
1716            event->window != xpaned->handle_middle && event->button == 1)
1717     {
1718       xpaned->in_drag_vert = TRUE;
1719
1720       /* We need a server grab here, not gtk_grab_add(), since
1721        * we don't want to pass events on to the widget's children */
1722       if (gdk_pointer_grab (xpaned->handle_east,
1723                             FALSE,
1724                             GDK_POINTER_MOTION_HINT_MASK
1725                             | GDK_BUTTON1_MOTION_MASK
1726                             | GDK_BUTTON_RELEASE_MASK
1727                             | GDK_ENTER_NOTIFY_MASK
1728                             | GDK_LEAVE_NOTIFY_MASK,
1729                             NULL, NULL, event->time) == GDK_GRAB_SUCCESS)
1730         {
1731         }
1732
1733       xpaned->drag_pos.y = event->y;
1734
1735       return TRUE;
1736     }
1737   else if (!xpaned->in_drag_vert &&
1738            event->window != xpaned->handle_east &&
1739            event->window == xpaned->handle_west &&
1740            event->window != xpaned->handle_north &&
1741            event->window != xpaned->handle_south &&
1742            event->window != xpaned->handle_middle && event->button == 1)
1743     {
1744       xpaned->in_drag_vert = TRUE;
1745
1746       /* We need a server grab here, not gtk_grab_add(), since
1747        * we don't want to pass events on to the widget's children */
1748       if (gdk_pointer_grab (xpaned->handle_west,
1749                             FALSE,
1750                             GDK_POINTER_MOTION_HINT_MASK
1751                             | GDK_BUTTON1_MOTION_MASK
1752                             | GDK_BUTTON_RELEASE_MASK
1753                             | GDK_ENTER_NOTIFY_MASK
1754                             | GDK_LEAVE_NOTIFY_MASK,
1755                             NULL, NULL, event->time) == GDK_GRAB_SUCCESS)
1756         {
1757         }
1758
1759       xpaned->drag_pos.y = event->y;
1760
1761       return TRUE;
1762     }
1763   else if (!xpaned->in_drag_horiz &&
1764            event->window != xpaned->handle_east &&
1765            event->window != xpaned->handle_west &&
1766            event->window == xpaned->handle_north &&
1767            event->window != xpaned->handle_south &&
1768            event->window != xpaned->handle_middle && event->button == 1)
1769     {
1770       xpaned->in_drag_horiz = TRUE;
1771
1772       /* We need a server grab here, not gtk_grab_add(), since
1773        * we don't want to pass events on to the widget's children */
1774       if (gdk_pointer_grab (xpaned->handle_north,
1775                             FALSE,
1776                             GDK_POINTER_MOTION_HINT_MASK
1777                             | GDK_BUTTON1_MOTION_MASK
1778                             | GDK_BUTTON_RELEASE_MASK
1779                             | GDK_ENTER_NOTIFY_MASK
1780                             | GDK_LEAVE_NOTIFY_MASK,
1781                             NULL, NULL, event->time) == GDK_GRAB_SUCCESS)
1782         {
1783         }
1784
1785       xpaned->drag_pos.x = event->x;
1786
1787       return TRUE;
1788     }
1789   else if (!xpaned->in_drag_horiz &&
1790            event->window != xpaned->handle_east &&
1791            event->window != xpaned->handle_west &&
1792            event->window != xpaned->handle_north &&
1793            event->window == xpaned->handle_south &&
1794            event->window != xpaned->handle_middle && event->button == 1)
1795     {
1796       xpaned->in_drag_horiz = TRUE;
1797
1798       /* We need a server grab here, not gtk_grab_add(), since
1799        * we don't want to pass events on to the widget's children */
1800       if (gdk_pointer_grab (xpaned->handle_south,
1801                             FALSE,
1802                             GDK_POINTER_MOTION_HINT_MASK
1803                             | GDK_BUTTON1_MOTION_MASK
1804                             | GDK_BUTTON_RELEASE_MASK
1805                             | GDK_ENTER_NOTIFY_MASK
1806                             | GDK_LEAVE_NOTIFY_MASK,
1807                             NULL, NULL, event->time) == GDK_GRAB_SUCCESS)
1808         {
1809         }
1810
1811       xpaned->drag_pos.x = event->x;
1812
1813       return TRUE;
1814     }
1815   return FALSE;
1816 }
1817
1818 static gboolean
1819 gtk_xpaned_button_release (GtkWidget * widget, GdkEventButton * event)
1820 {
1821   GtkXPaned *xpaned = GTK_XPANED (widget);
1822
1823   if (xpaned->in_drag_vert && (event->button == 1))
1824     {
1825       xpaned->in_drag_vert = FALSE;
1826       xpaned->drag_pos.y = -1;
1827       xpaned->position_set = TRUE;
1828       gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
1829                                   event->time);
1830       return TRUE;
1831     }
1832   else if (xpaned->in_drag_horiz && (event->button == 1))
1833     {
1834       xpaned->in_drag_horiz = FALSE;
1835       xpaned->drag_pos.x = -1;
1836       xpaned->position_set = TRUE;
1837       gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
1838                                   event->time);
1839       return TRUE;
1840     }
1841   else if (xpaned->in_drag_vert_and_horiz && (event->button == 1))
1842     {
1843       xpaned->in_drag_vert_and_horiz = FALSE;
1844       xpaned->drag_pos.x = -1;
1845       xpaned->drag_pos.y = -1;
1846       xpaned->position_set = TRUE;
1847       gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
1848                                   event->time);
1849       return TRUE;
1850     }
1851
1852   return FALSE;
1853 }
1854
1855 static gboolean
1856 gtk_xpaned_motion (GtkWidget * widget, GdkEventMotion * event)
1857 {
1858   GtkXPaned *xpaned = GTK_XPANED (widget);
1859
1860   if (xpaned->in_drag_vert ||
1861       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1862
1863     {
1864       update_drag (xpaned);
1865       return TRUE;
1866     }
1867
1868   return FALSE;
1869 }
1870
1871 void
1872 gtk_xpaned_add_top_left (GtkXPaned * xpaned, GtkWidget * widget)
1873 {
1874   gtk_xpaned_pack_top_left (xpaned, widget, FALSE, TRUE);
1875 }
1876
1877 void
1878 gtk_xpaned_add_top_right (GtkXPaned * xpaned, GtkWidget * widget)
1879 {
1880   gtk_xpaned_pack_top_right (xpaned, widget, FALSE, TRUE);
1881 }
1882
1883 void
1884 gtk_xpaned_add_bottom_left (GtkXPaned * xpaned, GtkWidget * widget)
1885 {
1886   gtk_xpaned_pack_bottom_left (xpaned, widget, FALSE, TRUE);
1887 }
1888
1889 void
1890 gtk_xpaned_add_bottom_right (GtkXPaned * xpaned, GtkWidget * widget)
1891 {
1892   gtk_xpaned_pack_bottom_right (xpaned, widget, FALSE, TRUE);
1893 }
1894
1895 void
1896 gtk_xpaned_pack_top_left (GtkXPaned * xpaned,
1897                           GtkWidget * child, gboolean resize, gboolean shrink)
1898 {
1899   g_return_if_fail (GTK_IS_XPANED (xpaned));
1900   g_return_if_fail (GTK_IS_WIDGET (child));
1901
1902   if (!xpaned->top_left_child)
1903     {
1904       xpaned->top_left_child = child;
1905       xpaned->top_left_child_resize = resize;
1906       xpaned->top_left_child_shrink = shrink;
1907
1908       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1909     }
1910 }
1911
1912 void
1913 gtk_xpaned_pack_top_right (GtkXPaned * xpaned,
1914                            GtkWidget * child,
1915                            gboolean resize, gboolean shrink)
1916 {
1917   g_return_if_fail (GTK_IS_XPANED (xpaned));
1918   g_return_if_fail (GTK_IS_WIDGET (child));
1919
1920   if (!xpaned->top_right_child)
1921     {
1922       xpaned->top_right_child = child;
1923       xpaned->top_right_child_resize = resize;
1924       xpaned->top_right_child_shrink = shrink;
1925
1926       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1927     }
1928 }
1929
1930 void
1931 gtk_xpaned_pack_bottom_left (GtkXPaned * xpaned,
1932                              GtkWidget * child,
1933                              gboolean resize, gboolean shrink)
1934 {
1935   g_return_if_fail (GTK_IS_XPANED (xpaned));
1936   g_return_if_fail (GTK_IS_WIDGET (child));
1937
1938   if (!xpaned->bottom_left_child)
1939     {
1940       xpaned->bottom_left_child = child;
1941       xpaned->bottom_left_child_resize = resize;
1942       xpaned->bottom_left_child_shrink = shrink;
1943
1944       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1945     }
1946 }
1947
1948 void
1949 gtk_xpaned_pack_bottom_right (GtkXPaned * xpaned,
1950                               GtkWidget * child,
1951                               gboolean resize, gboolean shrink)
1952 {
1953   g_return_if_fail (GTK_IS_XPANED (xpaned));
1954   g_return_if_fail (GTK_IS_WIDGET (child));
1955
1956   if (!xpaned->bottom_right_child)
1957     {
1958       xpaned->bottom_right_child = child;
1959       xpaned->bottom_right_child_resize = resize;
1960       xpaned->bottom_right_child_shrink = shrink;
1961
1962       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1963     }
1964 }
1965
1966 static void
1967 gtk_xpaned_add (GtkContainer * container, GtkWidget * widget)
1968 {
1969   GtkXPaned *xpaned;
1970
1971   g_return_if_fail (GTK_IS_XPANED (container));
1972
1973   xpaned = GTK_XPANED (container);
1974
1975   if (!xpaned->top_left_child)
1976     gtk_xpaned_add_top_left (xpaned, widget);
1977   else if (!xpaned->top_right_child)
1978     gtk_xpaned_add_top_right (xpaned, widget);
1979   else if (!xpaned->bottom_left_child)
1980     gtk_xpaned_add_bottom_left (xpaned, widget);
1981   else if (!xpaned->bottom_right_child)
1982     gtk_xpaned_add_bottom_right (xpaned, widget);
1983   else
1984     g_warning ("GtkXPaned cannot have more than 4 children\n");
1985 }
1986
1987 static void
1988 gtk_xpaned_remove (GtkContainer * container, GtkWidget * widget)
1989 {
1990   GtkXPaned *xpaned;
1991   gboolean was_visible;
1992
1993   xpaned = GTK_XPANED (container);
1994   was_visible = gtk_widget_get_visible (widget);
1995
1996   if (xpaned->top_left_child == widget)
1997     {
1998       gtk_widget_unparent (widget);
1999
2000       xpaned->top_left_child = NULL;
2001
2002       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
2003         gtk_widget_queue_resize (GTK_WIDGET (container));
2004     }
2005   else if (xpaned->top_right_child == widget)
2006     {
2007       gtk_widget_unparent (widget);
2008
2009       xpaned->top_right_child = NULL;
2010
2011       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
2012         gtk_widget_queue_resize (GTK_WIDGET (container));
2013     }
2014   else if (xpaned->bottom_left_child == widget)
2015     {
2016       gtk_widget_unparent (widget);
2017
2018       xpaned->bottom_left_child = NULL;
2019
2020       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
2021         gtk_widget_queue_resize (GTK_WIDGET (container));
2022     }
2023   else if (xpaned->bottom_right_child == widget)
2024     {
2025       gtk_widget_unparent (widget);
2026
2027       xpaned->bottom_right_child = NULL;
2028
2029       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
2030         gtk_widget_queue_resize (GTK_WIDGET (container));
2031     }
2032   else
2033     g_warning ("GtkXPaned has no more children attached\n");
2034
2035 }
2036
2037 static void
2038 gtk_xpaned_forall (GtkContainer * container,
2039                    gboolean include_internals,
2040                    GtkCallback callback, gpointer callback_data)
2041 {
2042   GtkXPaned *xpaned;
2043
2044   g_return_if_fail (callback != NULL);
2045
2046   xpaned = GTK_XPANED (container);
2047
2048   if (xpaned->top_left_child)
2049     (*callback) (xpaned->top_left_child, callback_data);
2050   if (xpaned->top_right_child)
2051     (*callback) (xpaned->top_right_child, callback_data);
2052   if (xpaned->bottom_left_child)
2053     (*callback) (xpaned->bottom_left_child, callback_data);
2054   if (xpaned->bottom_right_child)
2055     (*callback) (xpaned->bottom_right_child, callback_data);
2056 }
2057
2058 /**
2059  * gtk_xpaned_get_position_x:
2060  * @paned: a #GtkXPaned widget
2061  *
2062  * Obtains the x-position of the divider.
2063  *
2064  * Return value: x-position of the divider
2065  **/
2066 gint
2067 gtk_xpaned_get_position_x (GtkXPaned * xpaned)
2068 {
2069   g_return_val_if_fail (GTK_IS_XPANED (xpaned), 0);
2070
2071   return xpaned->top_left_child_size.width;
2072 }
2073
2074 /**
2075  * gtk_xpaned_get_position_y:
2076  * @paned: a #GtkXPaned widget
2077  *
2078  * Obtains the y-position of the divider.
2079  *
2080  * Return value: y-position of the divider
2081  **/
2082 gint
2083 gtk_xpaned_get_position_y (GtkXPaned * xpaned)
2084 {
2085   g_return_val_if_fail (GTK_IS_XPANED (xpaned), 0);
2086
2087   return xpaned->top_left_child_size.height;
2088 }
2089
2090 /**
2091  * gtk_xpaned_set_position_x:
2092  * @paned: a #GtkXPaned widget
2093  * @xposition: pixel x-position of divider, a negative values
2094  *                         of a component mean that the position is unset.
2095  *
2096  * Sets the x-position of the divider between the four panes.
2097  **/
2098 void
2099 gtk_xpaned_set_position_x (GtkXPaned * xpaned, gint xposition)
2100 {
2101   GObject *object;
2102
2103   g_return_if_fail (GTK_IS_XPANED (xpaned));
2104
2105   /* if any child is currently maximized, jump right back */
2106   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
2107       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
2108       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
2109       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2110     return;
2111
2112   object = G_OBJECT (xpaned);
2113
2114   if (xposition >= 0)
2115     {
2116       /* We don't clamp here - the assumption is that
2117        * if the total allocation changes at the same time
2118        * as the position, the position set is with reference
2119        * to the new total size. If only the position changes,
2120        * then clamping will occur in gtk_paned_compute_position()
2121        */
2122
2123       xpaned->top_left_child_size.width = xposition;
2124       xpaned->position_set = TRUE;
2125     }
2126   else
2127     {
2128       xpaned->position_set = FALSE;
2129     }
2130
2131   g_object_freeze_notify (object);
2132   g_object_notify (object, "x-position");
2133   g_object_notify (object, "position-set");
2134   g_object_thaw_notify (object);
2135
2136   gtk_widget_queue_resize (GTK_WIDGET (xpaned));
2137 }
2138
2139 /**
2140  * gtk_xpaned_set_position_y:
2141  * @paned: a #GtkXPaned widget
2142  * @yposition: pixel y-position of divider, a negative values
2143  *                         of a component mean that the position is unset.
2144  *
2145  * Sets the y-position of the divider between the four panes.
2146  **/
2147 void
2148 gtk_xpaned_set_position_y (GtkXPaned * xpaned, gint yposition)
2149 {
2150   GObject *object;
2151
2152   g_return_if_fail (GTK_IS_XPANED (xpaned));
2153
2154   /* if any child is currently maximized, jump right back */
2155   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
2156       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
2157       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
2158       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2159     return;
2160
2161   object = G_OBJECT (xpaned);
2162
2163   if (yposition >= 0)
2164     {
2165       /* We don't clamp here - the assumption is that
2166        * if the total allocation changes at the same time
2167        * as the position, the position set is with reference
2168        * to the new total size. If only the position changes,
2169        * then clamping will occur in gtk_paned_compute_position()
2170        */
2171
2172       xpaned->top_left_child_size.height = yposition;
2173       xpaned->position_set = TRUE;
2174     }
2175   else
2176     {
2177       xpaned->position_set = FALSE;
2178     }
2179
2180   g_object_freeze_notify (object);
2181   g_object_notify (object, "y-position");
2182   g_object_notify (object, "position-set");
2183   g_object_thaw_notify (object);
2184
2185   gtk_widget_queue_resize (GTK_WIDGET (xpaned));
2186 }
2187
2188 /* this call is private and only intended for internal use! */
2189 void
2190 gtk_xpaned_save_unmaximized_x (GtkXPaned * xpaned)
2191 {
2192   xpaned->unmaximized_position.x = gtk_xpaned_get_position_x (xpaned);
2193 }
2194
2195 /* this call is private and only intended for internal use! */
2196 void
2197 gtk_xpaned_save_unmaximized_y (GtkXPaned * xpaned)
2198 {
2199   xpaned->unmaximized_position.y = gtk_xpaned_get_position_y (xpaned);
2200 }
2201
2202 /* this call is private and only intended for internal use! */
2203 gint
2204 gtk_xpaned_fetch_unmaximized_x (GtkXPaned * xpaned)
2205 {
2206   return xpaned->unmaximized_position.x;
2207 }
2208
2209 /* this call is private and only intended for internal use! */
2210 gint
2211 gtk_xpaned_fetch_unmaximized_y (GtkXPaned * xpaned)
2212 {
2213   return xpaned->unmaximized_position.y;
2214 }
2215
2216 /**
2217  * gtk_xpaned_get_top_left_child:
2218  * @xpaned: a #GtkXPaned widget
2219  *
2220  * Obtains the top-left child of the xpaned widget.
2221  *
2222  * Return value: top-left child, or %NULL if it is not set.
2223  *
2224  * Since: 2.4
2225  **/
2226 GtkWidget *
2227 gtk_xpaned_get_top_left_child (GtkXPaned * xpaned)
2228 {
2229   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2230
2231   return xpaned->top_left_child;
2232 }
2233
2234 /**
2235  * gtk_xpaned_get_top_right_child:
2236  * @xpaned: a #GtkXPaned widget
2237  *
2238  * Obtains the top-right child of the xpaned widget.
2239  *
2240  * Return value: top-right child, or %NULL if it is not set.
2241  *
2242  * Since: 2.4
2243  **/
2244 GtkWidget *
2245 gtk_xpaned_get_top_right_child (GtkXPaned * xpaned)
2246 {
2247   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2248
2249   return xpaned->top_right_child;
2250 }
2251
2252 /**
2253  * gtk_xpaned_get_bottom_left_child:
2254  * @xpaned: a #GtkXPaned widget
2255  *
2256  * Obtains the bottom-left child of the xpaned widget.
2257  *
2258  * Return value: bottom-left child, or %NULL if it is not set.
2259  *
2260  * Since: 2.4
2261  **/
2262 GtkWidget *
2263 gtk_xpaned_get_bottom_left_child (GtkXPaned * xpaned)
2264 {
2265   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2266
2267   return xpaned->bottom_left_child;
2268 }
2269
2270 /**
2271  * gtk_xpaned_get_bottom_right_child:
2272  * @xpaned: a #GtkXPaned widget
2273  *
2274  * Obtains the bottom-right child of the xpaned widget.
2275  *
2276  * Return value: bottom-right child, or %NULL if it is not set.
2277  *
2278  * Since: 2.4
2279  **/
2280 GtkWidget *
2281 gtk_xpaned_get_bottom_right_child (GtkXPaned * xpaned)
2282 {
2283   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2284
2285   return xpaned->bottom_right_child;
2286 }
2287
2288 gboolean
2289 gtk_xpaned_maximize_top_left (GtkXPaned * xpaned, gboolean maximize)
2290 {
2291   if (maximize)
2292     {
2293       /* see if any child is already maximized */
2294       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2295           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2296           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2297           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2298         {
2299           /* save current position */
2300           gtk_xpaned_save_unmaximized_x (xpaned);
2301           gtk_xpaned_save_unmaximized_y (xpaned);
2302
2303           /* set new maximized position */
2304           gtk_xpaned_set_position_x (xpaned, xpaned->max_position.x);
2305           gtk_xpaned_set_position_y (xpaned, xpaned->max_position.y);
2306
2307           /* mark maximized flag for top-left child */
2308           xpaned->maximized[GTK_XPANED_TOP_LEFT] = TRUE;
2309
2310           return TRUE;
2311         }
2312       /* already one child maximized, report error */
2313       else
2314         return FALSE;
2315     }
2316   else
2317     {
2318       /* verify that top-left child is really currently maximized */
2319       if (xpaned->maximized[GTK_XPANED_TOP_LEFT])
2320         {
2321           /* clear maximized flat for top-left child */
2322           xpaned->maximized[GTK_XPANED_TOP_LEFT] = FALSE;
2323
2324           /* restore unmaximized position */
2325           gtk_xpaned_set_position_x (xpaned,
2326                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2327           gtk_xpaned_set_position_y (xpaned,
2328                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2329
2330           return TRUE;
2331         }
2332       /* top-left child is currently not maximized, report error */
2333       else
2334         return FALSE;
2335     }
2336 }
2337
2338 gboolean
2339 gtk_xpaned_maximize_top_right (GtkXPaned * xpaned, gboolean maximize)
2340 {
2341   if (maximize)
2342     {
2343       /* see if any child is already maximized */
2344       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2345           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2346           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2347           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2348         {
2349           /* save current position */
2350           gtk_xpaned_save_unmaximized_x (xpaned);
2351           gtk_xpaned_save_unmaximized_y (xpaned);
2352
2353           /* set new maximized position */
2354           gtk_xpaned_set_position_x (xpaned, xpaned->min_position.x);
2355           gtk_xpaned_set_position_y (xpaned, xpaned->max_position.y);
2356
2357           /* mark maximized flag for top-right child */
2358           xpaned->maximized[GTK_XPANED_TOP_RIGHT] = TRUE;
2359
2360           return TRUE;
2361         }
2362       /* already one child maximized, report error */
2363       else
2364         return FALSE;
2365     }
2366   else
2367     {
2368       /* verify that top-right child is really currently maximized */
2369       if (xpaned->maximized[GTK_XPANED_TOP_RIGHT])
2370         {
2371           /* clear maximized flat for top-right child */
2372           xpaned->maximized[GTK_XPANED_TOP_RIGHT] = FALSE;
2373
2374           /* restore unmaximized position */
2375           gtk_xpaned_set_position_x (xpaned,
2376                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2377           gtk_xpaned_set_position_y (xpaned,
2378                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2379
2380           return TRUE;
2381         }
2382       /* top-right child is currently not maximized, report error */
2383       else
2384         return FALSE;
2385     }
2386 }
2387
2388 gboolean
2389 gtk_xpaned_maximize_bottom_left (GtkXPaned * xpaned, gboolean maximize)
2390 {
2391   if (maximize)
2392     {
2393       /* see if any child is already maximized */
2394       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2395           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2396           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2397           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2398         {
2399           /* save current position */
2400           gtk_xpaned_save_unmaximized_x (xpaned);
2401           gtk_xpaned_save_unmaximized_y (xpaned);
2402
2403           /* set new maximized position */
2404           gtk_xpaned_set_position_x (xpaned, xpaned->max_position.x);
2405           gtk_xpaned_set_position_y (xpaned, xpaned->min_position.y);
2406
2407           /* mark maximized flag for bottom-left child */
2408           xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] = TRUE;
2409
2410           return TRUE;
2411         }
2412       /* already one child maximized, report error */
2413       else
2414         return FALSE;
2415     }
2416   else
2417     {
2418       /* verify that bottom-left child is really currently maximized */
2419       if (xpaned->maximized[GTK_XPANED_BOTTOM_LEFT])
2420         {
2421           /* clear maximized flat for bottom-left child */
2422           xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] = FALSE;
2423
2424           /* restore unmaximized position */
2425           gtk_xpaned_set_position_x (xpaned,
2426                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2427           gtk_xpaned_set_position_y (xpaned,
2428                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2429
2430           return TRUE;
2431         }
2432       /* bottom-left child is currently not maximized, report error */
2433       else
2434         return FALSE;
2435     }
2436 }
2437
2438 gboolean
2439 gtk_xpaned_maximize_bottom_right (GtkXPaned * xpaned, gboolean maximize)
2440 {
2441   if (maximize)
2442     {
2443       /* see if any child is already maximized */
2444       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2445           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2446           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2447           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2448         {
2449           /* save current position */
2450           gtk_xpaned_save_unmaximized_x (xpaned);
2451           gtk_xpaned_save_unmaximized_y (xpaned);
2452
2453           /* set new maximized position */
2454           gtk_xpaned_set_position_x (xpaned, xpaned->min_position.x);
2455           gtk_xpaned_set_position_y (xpaned, xpaned->min_position.y);
2456
2457           /* mark maximized flag for bottom-right child */
2458           xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT] = TRUE;
2459
2460           return TRUE;
2461         }
2462       /* already one child maximized, report error */
2463       else
2464         return FALSE;
2465     }
2466   else
2467     {
2468       /* verify that bottom-right child is really currently maximized */
2469       if (xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2470         {
2471           /* clear maximized flat for bottom-right child */
2472           xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT] = FALSE;
2473
2474           /* restore unmaximized position */
2475           gtk_xpaned_set_position_x (xpaned,
2476                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2477           gtk_xpaned_set_position_y (xpaned,
2478                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2479
2480           return TRUE;
2481         }
2482       /* bottom-right child is currently not maximized, report error */
2483       else
2484         return FALSE;
2485     }
2486 }
2487
2488 void
2489 gtk_xpaned_compute_position (GtkXPaned * xpaned,
2490                              const GtkAllocation * allocation,
2491                              GtkRequisition * top_left_child_req,
2492                              GtkRequisition * top_right_child_req,
2493                              GtkRequisition * bottom_left_child_req,
2494                              GtkRequisition * bottom_right_child_req)
2495 {
2496   GdkPoint old_position;
2497   GdkPoint old_min_position;
2498   GdkPoint old_max_position;
2499   gint handle_size;
2500   gint border_width = gtk_container_get_border_width (GTK_CONTAINER (xpaned));
2501
2502   g_return_if_fail (GTK_IS_XPANED (xpaned));
2503
2504   old_position.x = xpaned->top_left_child_size.width;
2505   old_position.y = xpaned->top_left_child_size.height;
2506   old_min_position.x = xpaned->min_position.x;
2507   old_min_position.y = xpaned->min_position.y;
2508   old_max_position.x = xpaned->max_position.x;
2509   old_max_position.y = xpaned->max_position.y;
2510
2511   xpaned->min_position.x =
2512     xpaned->top_left_child_shrink ? 0 : top_left_child_req->width;
2513   xpaned->min_position.y =
2514     xpaned->top_left_child_shrink ? 0 : top_left_child_req->height;
2515
2516   gtk_widget_style_get (GTK_WIDGET (xpaned), "handle-size", &handle_size,
2517                         NULL);
2518
2519   xpaned->max_position.x = allocation->width - 2 * border_width - handle_size;
2520   xpaned->max_position.y =
2521     allocation->height - 2 * border_width - handle_size;
2522   if (!xpaned->top_left_child_shrink)
2523     xpaned->max_position.x =
2524       MAX (1, xpaned->max_position.x - top_left_child_req->width);
2525   xpaned->max_position.x =
2526     MAX (xpaned->min_position.x, xpaned->max_position.x);
2527
2528   if (!xpaned->position_set)
2529     {
2530       if (xpaned->top_left_child_resize && !xpaned->top_right_child_resize)
2531         {
2532           xpaned->top_left_child_size.width =
2533             MAX (0, allocation->width - top_right_child_req->width);
2534           xpaned->top_left_child_size.height =
2535             MAX (0, allocation->height - top_right_child_req->height);
2536         }
2537       else if (!xpaned->top_left_child_resize
2538                && xpaned->top_right_child_resize)
2539         {
2540           xpaned->top_left_child_size.width = top_left_child_req->width;
2541           xpaned->top_left_child_size.height = top_left_child_req->height;
2542         }
2543       else
2544         {
2545           xpaned->top_left_child_size.width = allocation->width * 0.5 + 0.5;
2546           xpaned->top_left_child_size.height = allocation->height * 0.5 + 0.5;
2547         }
2548     }
2549   else
2550     {
2551       /* If the position was set before the initial allocation.
2552       ** (paned->last_allocation <= 0) just clamp it and leave it. */
2553       if (xpaned->last_allocation.width > 0)
2554         {
2555           if (xpaned->top_left_child_resize
2556               && !xpaned->top_right_child_resize)
2557             {
2558               xpaned->top_left_child_size.width += allocation->width
2559                 - xpaned->last_allocation.width;
2560
2561               xpaned->top_left_child_size.height += allocation->height
2562                 - xpaned->last_allocation.height;
2563             }
2564           else
2565             if (!
2566                 (!xpaned->top_left_child_resize
2567                  && xpaned->top_right_child_resize))
2568               {
2569                 xpaned->top_left_child_size.width = allocation->width
2570                   * ((gdouble) xpaned->top_left_child_size.width /
2571                      (xpaned->last_allocation.width)) + 0.5;
2572
2573                 xpaned->top_left_child_size.height = allocation->height
2574                   * ((gdouble) xpaned->top_left_child_size.height /
2575                      (xpaned->last_allocation.height)) + 0.5;
2576               }
2577         }
2578       if (xpaned->last_allocation.height > 0)
2579         {
2580           if (xpaned->top_left_child_resize
2581               && !xpaned->top_right_child_resize)
2582             {
2583               xpaned->top_left_child_size.width +=
2584                 allocation->width - xpaned->last_allocation.width;
2585               xpaned->top_left_child_size.height +=
2586                 allocation->height - xpaned->last_allocation.height;
2587             }
2588           else
2589             if (!
2590                 (!xpaned->top_left_child_resize
2591                  && xpaned->top_right_child_resize))
2592               {
2593                 xpaned->top_left_child_size.width =
2594                   allocation->width *
2595                   ((gdouble) xpaned->top_left_child_size.width /
2596                    (xpaned->last_allocation.width)) + 0.5;
2597                 xpaned->top_left_child_size.height =
2598                   allocation->height *
2599                   ((gdouble) xpaned->top_left_child_size.height /
2600                    (xpaned->last_allocation.height)) + 0.5;
2601               }
2602         }
2603
2604     }
2605
2606   xpaned->top_left_child_size.width =
2607     CLAMP (xpaned->top_left_child_size.width, xpaned->min_position.x,
2608            xpaned->max_position.x);
2609   xpaned->top_left_child_size.height =
2610     CLAMP (xpaned->top_left_child_size.height, xpaned->min_position.y,
2611            xpaned->max_position.y);
2612
2613   xpaned->top_right_child_size.width =
2614     CLAMP (xpaned->top_right_child_size.width, xpaned->min_position.x,
2615            xpaned->max_position.x);
2616   xpaned->top_right_child_size.height =
2617     CLAMP (xpaned->top_right_child_size.height, xpaned->min_position.y,
2618            xpaned->max_position.y);
2619
2620   xpaned->bottom_left_child_size.width =
2621     CLAMP (xpaned->bottom_left_child_size.width, xpaned->min_position.x,
2622            xpaned->max_position.x);
2623   xpaned->bottom_left_child_size.height =
2624     CLAMP (xpaned->bottom_left_child_size.height, xpaned->min_position.y,
2625            xpaned->max_position.y);
2626
2627   xpaned->bottom_right_child_size.width =
2628     CLAMP (xpaned->bottom_right_child_size.width, xpaned->min_position.x,
2629            xpaned->max_position.x);
2630   xpaned->bottom_right_child_size.height =
2631     CLAMP (xpaned->bottom_right_child_size.height, xpaned->min_position.y,
2632            xpaned->max_position.y);
2633
2634   gtk_widget_set_child_visible (xpaned->top_left_child, TRUE);
2635   gtk_widget_set_child_visible (xpaned->top_right_child, TRUE);
2636   gtk_widget_set_child_visible (xpaned->bottom_left_child, TRUE);
2637   gtk_widget_set_child_visible (xpaned->bottom_right_child, TRUE);
2638
2639   g_object_freeze_notify (G_OBJECT (xpaned));
2640
2641   if (xpaned->top_left_child_size.width != old_position.x)
2642     g_object_notify (G_OBJECT (xpaned), "x-position");
2643   if (xpaned->top_left_child_size.height != old_position.y)
2644     g_object_notify (G_OBJECT (xpaned), "y-position");
2645
2646   if (xpaned->top_right_child_size.width != old_position.x)
2647     g_object_notify (G_OBJECT (xpaned), "x-position");
2648   if (xpaned->top_right_child_size.height != old_position.y)
2649     g_object_notify (G_OBJECT (xpaned), "y-position");
2650
2651   if (xpaned->bottom_left_child_size.width != old_position.x)
2652     g_object_notify (G_OBJECT (xpaned), "x-position");
2653   if (xpaned->bottom_left_child_size.height != old_position.y)
2654     g_object_notify (G_OBJECT (xpaned), "y-position");
2655
2656   if (xpaned->bottom_right_child_size.width != old_position.x)
2657     g_object_notify (G_OBJECT (xpaned), "x-position");
2658   if (xpaned->bottom_right_child_size.height != old_position.y)
2659     g_object_notify (G_OBJECT (xpaned), "y-position");
2660
2661   if (xpaned->min_position.x != old_min_position.x)
2662     g_object_notify (G_OBJECT (xpaned), "min-x-position");
2663   if (xpaned->min_position.y != old_min_position.y)
2664     g_object_notify (G_OBJECT (xpaned), "min-y-position");
2665
2666   if (xpaned->max_position.x != old_max_position.x)
2667     g_object_notify (G_OBJECT (xpaned), "max-y-position");
2668   if (xpaned->max_position.y != old_max_position.y)
2669     g_object_notify (G_OBJECT (xpaned), "max-y-position");
2670
2671   g_object_thaw_notify (G_OBJECT (xpaned));
2672
2673   xpaned->last_allocation.width = allocation->width;
2674   xpaned->last_allocation.height = allocation->height;
2675 }
2676
2677 static void
2678 gtk_xpaned_set_saved_focus (GtkXPaned * xpaned, GtkWidget * widget)
2679 {
2680   if (xpaned->priv->saved_focus)
2681     g_object_remove_weak_pointer (G_OBJECT (xpaned->priv->saved_focus),
2682                                   (gpointer *) & (xpaned->priv->saved_focus));
2683
2684   xpaned->priv->saved_focus = widget;
2685
2686   if (xpaned->priv->saved_focus)
2687     g_object_add_weak_pointer (G_OBJECT (xpaned->priv->saved_focus),
2688                                (gpointer *) & (xpaned->priv->saved_focus));
2689 }
2690
2691 static void
2692 gtk_xpaned_set_first_xpaned (GtkXPaned * xpaned, GtkXPaned * first_xpaned)
2693 {
2694   if (xpaned->priv->first_xpaned)
2695     g_object_remove_weak_pointer (G_OBJECT (xpaned->priv->first_xpaned),
2696                                   (gpointer *) & (xpaned->priv->
2697                                                   first_xpaned));
2698
2699   xpaned->priv->first_xpaned = first_xpaned;
2700
2701   if (xpaned->priv->first_xpaned)
2702     g_object_add_weak_pointer (G_OBJECT (xpaned->priv->first_xpaned),
2703                                (gpointer *) & (xpaned->priv->first_xpaned));
2704 }
2705
2706 static void
2707 gtk_xpaned_set_last_top_left_child_focus (GtkXPaned * xpaned,
2708                                           GtkWidget * widget)
2709 {
2710   if (xpaned->last_top_left_child_focus)
2711     g_object_remove_weak_pointer (G_OBJECT
2712                                   (xpaned->last_top_left_child_focus),
2713                                   (gpointer *) & (xpaned->
2714                                                   last_top_left_child_focus));
2715
2716   xpaned->last_top_left_child_focus = widget;
2717
2718   if (xpaned->last_top_left_child_focus)
2719     g_object_add_weak_pointer (G_OBJECT (xpaned->last_top_left_child_focus),
2720                                (gpointer *) & (xpaned->
2721                                                last_top_left_child_focus));
2722 }
2723
2724 static void
2725 gtk_xpaned_set_last_top_right_child_focus (GtkXPaned * xpaned,
2726                                            GtkWidget * widget)
2727 {
2728   if (xpaned->last_top_right_child_focus)
2729     g_object_remove_weak_pointer (G_OBJECT
2730                                   (xpaned->last_top_right_child_focus),
2731                                   (gpointer *) & (xpaned->
2732                                                   last_top_right_child_focus));
2733
2734   xpaned->last_top_right_child_focus = widget;
2735
2736   if (xpaned->last_top_right_child_focus)
2737     g_object_add_weak_pointer (G_OBJECT (xpaned->last_top_right_child_focus),
2738                                (gpointer *) & (xpaned->
2739                                                last_top_right_child_focus));
2740 }
2741
2742 static void
2743 gtk_xpaned_set_last_bottom_left_child_focus (GtkXPaned * xpaned,
2744                                              GtkWidget * widget)
2745 {
2746   if (xpaned->last_bottom_left_child_focus)
2747     g_object_remove_weak_pointer (G_OBJECT
2748                                   (xpaned->last_bottom_left_child_focus),
2749                                   (gpointer *) & (xpaned->
2750                                                   last_bottom_left_child_focus));
2751
2752   xpaned->last_bottom_left_child_focus = widget;
2753
2754   if (xpaned->last_bottom_left_child_focus)
2755     g_object_add_weak_pointer (G_OBJECT
2756                                (xpaned->last_bottom_left_child_focus),
2757                                (gpointer *) & (xpaned->
2758                                                last_bottom_left_child_focus));
2759 }
2760
2761 static void
2762 gtk_xpaned_set_last_bottom_right_child_focus (GtkXPaned * xpaned,
2763                                               GtkWidget * widget)
2764 {
2765   if (xpaned->last_bottom_right_child_focus)
2766     g_object_remove_weak_pointer (G_OBJECT
2767                                   (xpaned->last_bottom_right_child_focus),
2768                                   (gpointer *) & (xpaned->
2769                                                   last_bottom_right_child_focus));
2770
2771   xpaned->last_bottom_right_child_focus = widget;
2772
2773   if (xpaned->last_bottom_right_child_focus)
2774     g_object_add_weak_pointer (G_OBJECT
2775                                (xpaned->last_bottom_right_child_focus),
2776                                (gpointer *) & (xpaned->
2777                                                last_bottom_right_child_focus));
2778 }
2779
2780 static GtkWidget *
2781 xpaned_get_focus_widget (GtkXPaned * xpaned)
2782 {
2783   GtkWidget *toplevel;
2784
2785   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
2786   if (gtk_widget_is_toplevel (toplevel))
2787     return gtk_window_get_focus (GTK_WINDOW (toplevel));
2788
2789   return NULL;
2790 }
2791
2792 static void
2793 gtk_xpaned_set_focus_child (GtkContainer * container, GtkWidget * focus_child)
2794 {
2795   GtkXPaned *xpaned;
2796
2797   g_return_if_fail (GTK_IS_XPANED (container));
2798
2799   xpaned = GTK_XPANED (container);
2800
2801   if (focus_child == NULL)
2802     {
2803       GtkWidget *last_focus;
2804       GtkWidget *w;
2805
2806       last_focus = xpaned_get_focus_widget (xpaned);
2807
2808       if (last_focus)
2809         {
2810           /* If there is one or more paned widgets between us and the
2811            * focus widget, we want the topmost of those as last_focus
2812            */
2813           for (w = last_focus; w != GTK_WIDGET (xpaned); w = gtk_widget_get_parent (w))
2814             if (GTK_IS_XPANED (w))
2815               last_focus = w;
2816
2817           if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2818             gtk_xpaned_set_last_top_left_child_focus (xpaned, last_focus);
2819           else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2820             gtk_xpaned_set_last_top_right_child_focus (xpaned, last_focus);
2821           else if (gtk_container_get_focus_child (container) == xpaned->bottom_left_child)
2822             gtk_xpaned_set_last_bottom_left_child_focus (xpaned, last_focus);
2823           else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2824             gtk_xpaned_set_last_bottom_right_child_focus (xpaned, last_focus);
2825         }
2826     }
2827
2828   if (parent_class->set_focus_child)
2829     (*parent_class->set_focus_child) (container, focus_child);
2830 }
2831
2832 static void
2833 gtk_xpaned_get_cycle_chain (GtkXPaned * xpaned,
2834                             GtkDirectionType direction, GList ** widgets)
2835 {
2836   GtkContainer *container = GTK_CONTAINER (xpaned);
2837   GtkWidget *ancestor = NULL;
2838   GList *temp_list = NULL;
2839   GList *list;
2840
2841   if (xpaned->in_recursion)
2842     return;
2843
2844   g_assert (widgets != NULL);
2845
2846   if (xpaned->last_top_left_child_focus &&
2847       !gtk_widget_is_ancestor (xpaned->last_top_left_child_focus,
2848                                GTK_WIDGET (xpaned)))
2849     {
2850       gtk_xpaned_set_last_top_left_child_focus (xpaned, NULL);
2851     }
2852
2853   if (xpaned->last_top_right_child_focus &&
2854       !gtk_widget_is_ancestor (xpaned->last_top_right_child_focus,
2855                                GTK_WIDGET (xpaned)))
2856     {
2857       gtk_xpaned_set_last_top_right_child_focus (xpaned, NULL);
2858     }
2859
2860   if (xpaned->last_bottom_left_child_focus &&
2861       !gtk_widget_is_ancestor (xpaned->last_bottom_left_child_focus,
2862                                GTK_WIDGET (xpaned)))
2863     {
2864       gtk_xpaned_set_last_bottom_left_child_focus (xpaned, NULL);
2865     }
2866
2867   if (xpaned->last_bottom_right_child_focus &&
2868       !gtk_widget_is_ancestor (xpaned->last_bottom_right_child_focus,
2869                                GTK_WIDGET (xpaned)))
2870     {
2871       gtk_xpaned_set_last_bottom_right_child_focus (xpaned, NULL);
2872     }
2873
2874   if (gtk_widget_get_parent (GTK_WIDGET (xpaned)))
2875     ancestor = gtk_widget_get_ancestor (gtk_widget_get_parent (GTK_WIDGET (xpaned)),
2876                                         GTK_TYPE_XPANED);
2877
2878   /* The idea here is that temp_list is a list of widgets we want to cycle
2879    * to. The list is prioritized so that the first element is our first
2880    * choice, the next our second, and so on.
2881    *
2882    * We can't just use g_list_reverse(), because we want to try
2883    * paned->last_child?_focus before paned->child?, both when we
2884    * are going forward and backward.
2885    */
2886   if (direction == GTK_DIR_TAB_FORWARD)
2887     {
2888       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2889         {
2890           temp_list =
2891             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2892           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2893           temp_list = g_list_append (temp_list, ancestor);
2894         }
2895       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2896         {
2897           temp_list = g_list_append (temp_list, ancestor);
2898           temp_list =
2899             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2900           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2901         }
2902       else if (gtk_container_get_focus_child (container) == xpaned->bottom_left_child)
2903         {
2904           temp_list = g_list_append (temp_list, ancestor);
2905           temp_list =
2906             g_list_append (temp_list, xpaned->last_bottom_right_child_focus);
2907           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2908         }
2909       else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2910         {
2911           temp_list = g_list_append (temp_list, ancestor);
2912           temp_list =
2913             g_list_append (temp_list, xpaned->last_top_left_child_focus);
2914           temp_list = g_list_append (temp_list, xpaned->top_left_child);
2915         }
2916       else
2917         {
2918           temp_list =
2919             g_list_append (temp_list, xpaned->last_top_left_child_focus);
2920           temp_list = g_list_append (temp_list, xpaned->top_left_child);
2921           temp_list =
2922             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2923           temp_list = g_list_append (temp_list, xpaned->top_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_bottom_right_child_focus);
2929           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2930           temp_list = g_list_append (temp_list, ancestor);
2931         }
2932     }
2933   else
2934     {
2935       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2936         {
2937           temp_list = g_list_append (temp_list, ancestor);
2938           temp_list =
2939             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2940           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2941         }
2942       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2943         {
2944           temp_list =
2945             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2946           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2947           temp_list = g_list_append (temp_list, ancestor);
2948         }
2949       else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2950         {
2951           temp_list =
2952             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2953           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2954           temp_list = g_list_append (temp_list, ancestor);
2955         }
2956       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2957         {
2958           temp_list =
2959             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2960           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2961           temp_list = g_list_append (temp_list, ancestor);
2962         }
2963       else
2964         {
2965           temp_list =
2966             g_list_append (temp_list, xpaned->last_bottom_right_child_focus);
2967           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2968           temp_list =
2969             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2970           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2971           temp_list =
2972             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2973           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2974           temp_list =
2975             g_list_append (temp_list, xpaned->last_top_left_child_focus);
2976           temp_list = g_list_append (temp_list, xpaned->top_left_child);
2977           temp_list = g_list_append (temp_list, ancestor);
2978         }
2979     }
2980
2981   /* Walk the list and expand all the paned widgets. */
2982   for (list = temp_list; list != NULL; list = list->next)
2983     {
2984       GtkWidget *widget = list->data;
2985
2986       if (widget)
2987         {
2988           if (GTK_IS_XPANED (widget))
2989             {
2990               xpaned->in_recursion = TRUE;
2991               gtk_xpaned_get_cycle_chain (GTK_XPANED (widget),
2992                                           direction, widgets);
2993               xpaned->in_recursion = FALSE;
2994             }
2995           else
2996             {
2997               *widgets = g_list_append (*widgets, widget);
2998             }
2999         }
3000     }
3001
3002   g_list_free (temp_list);
3003 }
3004
3005 static gboolean
3006 gtk_xpaned_cycle_child_focus (GtkXPaned * xpaned, gboolean reversed)
3007 {
3008   GList *cycle_chain = NULL;
3009   GList *list;
3010
3011   GtkDirectionType direction =
3012     reversed ? GTK_DIR_TAB_BACKWARD : GTK_DIR_TAB_FORWARD;
3013
3014   /* ignore f6 if the handle is focused */
3015   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3016     return TRUE;
3017
3018   /* we can't just let the event propagate up the hierarchy,
3019    * because the paned will want to cycle focus _unless_ an
3020    * ancestor paned handles the event
3021    */
3022   gtk_xpaned_get_cycle_chain (xpaned, direction, &cycle_chain);
3023
3024   for (list = cycle_chain; list != NULL; list = list->next)
3025     if (gtk_widget_child_focus (GTK_WIDGET (list->data), direction))
3026       break;
3027
3028   g_list_free (cycle_chain);
3029
3030   return TRUE;
3031 }
3032
3033 static void
3034 get_child_xpanes (GtkWidget * widget, GList ** xpanes)
3035 {
3036   if (GTK_IS_XPANED (widget))
3037     {
3038       GtkXPaned *xpaned = GTK_XPANED (widget);
3039
3040       get_child_xpanes (xpaned->top_left_child, xpanes);
3041       *xpanes = g_list_prepend (*xpanes, widget);
3042       get_child_xpanes (xpaned->top_right_child, xpanes);
3043       *xpanes = g_list_prepend (*xpanes, widget);
3044       get_child_xpanes (xpaned->bottom_left_child, xpanes);
3045       *xpanes = g_list_prepend (*xpanes, widget);
3046       get_child_xpanes (xpaned->bottom_right_child, xpanes);
3047     }
3048   else if (GTK_IS_CONTAINER (widget))
3049     {
3050       gtk_container_foreach (GTK_CONTAINER (widget),
3051                              (GtkCallback) get_child_xpanes, xpanes);
3052     }
3053 }
3054
3055 static GList *
3056 get_all_xpanes (GtkXPaned * xpaned)
3057 {
3058   GtkXPaned *topmost = NULL;
3059   GList *result = NULL;
3060   GtkWidget *w;
3061
3062   for (w = GTK_WIDGET (xpaned); w != NULL; w = gtk_widget_get_parent (w))
3063     {
3064       if (GTK_IS_XPANED (w))
3065         topmost = GTK_XPANED (w);
3066     }
3067
3068   g_assert (topmost);
3069
3070   get_child_xpanes (GTK_WIDGET (topmost), &result);
3071
3072   return g_list_reverse (result);
3073 }
3074
3075 static void
3076 gtk_xpaned_find_neighbours (GtkXPaned * xpaned,
3077                             GtkXPaned ** next, GtkXPaned ** prev)
3078 {
3079   GList *all_xpanes;
3080   GList *this_link;
3081
3082   all_xpanes = get_all_xpanes (xpaned);
3083   g_assert (all_xpanes);
3084
3085   this_link = g_list_find (all_xpanes, xpaned);
3086
3087   g_assert (this_link);
3088
3089   if (this_link->next)
3090     *next = this_link->next->data;
3091   else
3092     *next = all_xpanes->data;
3093
3094   if (this_link->prev)
3095     *prev = this_link->prev->data;
3096   else
3097     *prev = g_list_last (all_xpanes)->data;
3098
3099   g_list_free (all_xpanes);
3100 }
3101
3102 static gboolean
3103 gtk_xpaned_move_handle (GtkXPaned * xpaned, GtkScrollType scroll)
3104 {
3105   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3106     {
3107       GdkPoint old_position;
3108       GdkPoint new_position;
3109       gint increment;
3110
3111       enum
3112       {
3113         SINGLE_STEP_SIZE = 1,
3114         PAGE_STEP_SIZE = 75
3115       };
3116
3117       new_position.x = old_position.x = gtk_xpaned_get_position_x (xpaned);
3118       new_position.y = old_position.y = gtk_xpaned_get_position_y (xpaned);
3119       increment = 0;
3120
3121       switch (scroll)
3122         {
3123         case GTK_SCROLL_STEP_LEFT:
3124         case GTK_SCROLL_STEP_UP:
3125         case GTK_SCROLL_STEP_BACKWARD:
3126           increment = -SINGLE_STEP_SIZE;
3127           break;
3128
3129         case GTK_SCROLL_STEP_RIGHT:
3130         case GTK_SCROLL_STEP_DOWN:
3131         case GTK_SCROLL_STEP_FORWARD:
3132           increment = SINGLE_STEP_SIZE;
3133           break;
3134
3135         case GTK_SCROLL_PAGE_LEFT:
3136         case GTK_SCROLL_PAGE_UP:
3137         case GTK_SCROLL_PAGE_BACKWARD:
3138           increment = -PAGE_STEP_SIZE;
3139           break;
3140
3141         case GTK_SCROLL_PAGE_RIGHT:
3142         case GTK_SCROLL_PAGE_DOWN:
3143         case GTK_SCROLL_PAGE_FORWARD:
3144           increment = PAGE_STEP_SIZE;
3145           break;
3146
3147         case GTK_SCROLL_START:
3148           new_position.x = xpaned->min_position.x;
3149           new_position.y = xpaned->min_position.y;
3150           break;
3151
3152         case GTK_SCROLL_END:
3153           new_position.x = xpaned->max_position.x;
3154           new_position.y = xpaned->max_position.y;
3155           break;
3156
3157         default:
3158           break;
3159         }
3160
3161       if (increment)
3162         {
3163           if (is_rtl (xpaned))
3164             increment = -increment;
3165
3166           new_position.x = old_position.x + increment;
3167           new_position.y = old_position.y + increment;
3168         }
3169
3170       new_position.x = CLAMP (new_position.x,
3171                               xpaned->min_position.x, xpaned->max_position.x);
3172
3173       new_position.y = CLAMP (new_position.y,
3174                               xpaned->min_position.y, xpaned->max_position.y);
3175
3176       if (old_position.x != new_position.x)
3177         gtk_xpaned_set_position_x (xpaned, new_position.x);
3178
3179       if (old_position.y != new_position.y)
3180         gtk_xpaned_set_position_y (xpaned, new_position.y);
3181
3182       return TRUE;
3183     }
3184
3185   return FALSE;
3186 }
3187
3188 static void
3189 gtk_xpaned_restore_focus (GtkXPaned * xpaned)
3190 {
3191   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3192     {
3193       if (xpaned->priv->saved_focus &&
3194           gtk_widget_get_sensitive (xpaned->priv->saved_focus))
3195         {
3196           gtk_widget_grab_focus (xpaned->priv->saved_focus);
3197         }
3198       else
3199         {
3200           /* the saved focus is somehow not available for focusing,
3201            * try
3202            *   1) tabbing into the paned widget
3203            * if that didn't work,
3204            *   2) unset focus for the window if there is one
3205            */
3206
3207           if (!gtk_widget_child_focus
3208               (GTK_WIDGET (xpaned), GTK_DIR_TAB_FORWARD))
3209             {
3210               GtkWidget *toplevel =
3211                 gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
3212
3213               if (GTK_IS_WINDOW (toplevel))
3214                 gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
3215             }
3216         }
3217
3218       gtk_xpaned_set_saved_focus (xpaned, NULL);
3219       gtk_xpaned_set_first_xpaned (xpaned, NULL);
3220     }
3221 }
3222
3223 static gboolean
3224 gtk_xpaned_accept_position (GtkXPaned * xpaned)
3225 {
3226   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3227     {
3228       xpaned->original_position.x = -1;
3229       xpaned->original_position.y = -1;
3230       gtk_xpaned_restore_focus (xpaned);
3231
3232       return TRUE;
3233     }
3234
3235   return FALSE;
3236 }
3237
3238 static gboolean
3239 gtk_xpaned_cancel_position (GtkXPaned * xpaned)
3240 {
3241   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3242     {
3243       if (xpaned->original_position.x != -1)
3244         {
3245           gtk_xpaned_set_position_x (xpaned, xpaned->original_position.x);
3246           xpaned->original_position.x = -1;
3247         }
3248
3249       if (xpaned->original_position.y != -1)
3250         {
3251           gtk_xpaned_set_position_y (xpaned, xpaned->original_position.y);
3252           xpaned->original_position.y = -1;
3253         }
3254
3255       gtk_xpaned_restore_focus (xpaned);
3256       return TRUE;
3257     }
3258
3259   return FALSE;
3260 }
3261
3262 static gboolean
3263 gtk_xpaned_cycle_handle_focus (GtkXPaned * xpaned, gboolean reversed)
3264 {
3265   GtkXPaned *next;
3266   GtkXPaned *prev;
3267
3268   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3269     {
3270       GtkXPaned *focus = NULL;
3271
3272       if (!xpaned->priv->first_xpaned)
3273         {
3274           /* The first_pane has disappeared. As an ad-hoc solution,
3275            * we make the currently focused paned the first_paned. To the
3276            * user this will seem like the paned cycling has been reset.
3277            */
3278           gtk_xpaned_set_first_xpaned (xpaned, xpaned);
3279         }
3280
3281       gtk_xpaned_find_neighbours (xpaned, &next, &prev);
3282
3283       if (reversed && prev &&
3284           prev != xpaned && xpaned != xpaned->priv->first_xpaned)
3285         {
3286           focus = prev;
3287         }
3288       else if (!reversed &&
3289                next && next != xpaned && next != xpaned->priv->first_xpaned)
3290         {
3291           focus = next;
3292         }
3293       else
3294         {
3295           gtk_xpaned_accept_position (xpaned);
3296           return TRUE;
3297         }
3298
3299       g_assert (focus);
3300
3301       gtk_xpaned_set_saved_focus (focus, xpaned->priv->saved_focus);
3302       gtk_xpaned_set_first_xpaned (focus, xpaned->priv->first_xpaned);
3303
3304       gtk_xpaned_set_saved_focus (xpaned, NULL);
3305       gtk_xpaned_set_first_xpaned (xpaned, NULL);
3306
3307       gtk_widget_grab_focus (GTK_WIDGET (focus));
3308
3309       if (!gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3310         {
3311           xpaned->original_position.x = -1;
3312           xpaned->original_position.y = -1;
3313           focus->original_position.x = gtk_xpaned_get_position_x (focus);
3314           focus->original_position.y = gtk_xpaned_get_position_y (focus);
3315         }
3316     }
3317   else
3318     {
3319       GtkContainer *container = GTK_CONTAINER (xpaned);
3320       GtkXPaned *focus;
3321       GtkXPaned *first;
3322       GtkXPaned *prev;
3323       GtkXPaned *next;
3324       GtkWidget *toplevel;
3325
3326       gtk_xpaned_find_neighbours (xpaned, &next, &prev);
3327
3328       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
3329         {
3330           if (reversed)
3331             {
3332               focus = prev;
3333               first = xpaned;
3334             }
3335           else
3336             {
3337               focus = xpaned;
3338               first = xpaned;
3339             }
3340         }
3341       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
3342         {
3343           if (reversed)
3344             {
3345               focus = xpaned;
3346               first = next;
3347             }
3348           else
3349             {
3350               focus = next;
3351               first = next;
3352             }
3353         }
3354       else
3355         {
3356           /* Focus is not inside this xpaned, and we don't have focus.
3357            * Presumably this happened because the application wants us
3358            * to start keyboard navigating.
3359            */
3360           focus = xpaned;
3361
3362           if (reversed)
3363             first = xpaned;
3364           else
3365             first = next;
3366         }
3367
3368       toplevel = gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
3369
3370       if (GTK_IS_WINDOW (toplevel))
3371         gtk_xpaned_set_saved_focus (focus,
3372                                     gtk_window_get_focus (GTK_WINDOW (toplevel)));
3373       gtk_xpaned_set_first_xpaned (focus, first);
3374       focus->original_position.x = gtk_xpaned_get_position_x (focus);
3375       focus->original_position.y = gtk_xpaned_get_position_y (focus);
3376
3377       gtk_widget_grab_focus (GTK_WIDGET (focus));
3378     }
3379
3380   return TRUE;
3381 }
3382
3383 static gboolean
3384 gtk_xpaned_toggle_handle_focus (GtkXPaned * xpaned)
3385 {
3386   /* This function/signal has the wrong name. It is called when you
3387    * press Tab or Shift-Tab and what we do is act as if
3388    * the user pressed Return and then Tab or Shift-Tab
3389    */
3390   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3391     gtk_xpaned_accept_position (xpaned);
3392
3393   return FALSE;
3394 }
3395
3396 /*#define __GTK_XPANED_C__*/
3397 /*#include "gtkaliasdef.c"*/