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       GtkStateType state;
1439
1440       if (gtk_widget_is_focus (widget))
1441         state = GTK_STATE_SELECTED;
1442       else if (xpaned->handle_prelit)
1443         state = GTK_STATE_PRELIGHT;
1444       else
1445         state = gtk_widget_get_state (widget);
1446
1447       gtk_paint_handle (gtk_widget_get_style (widget),
1448                         cr,
1449                         state,
1450                         GTK_SHADOW_NONE,
1451                         widget,
1452                         "paned",
1453                         xpaned->handle_pos_east.x - handle_size - 256 / 2,
1454                         xpaned->handle_pos_west.y + 1,
1455                         256 + handle_size, handle_size - 2,
1456                         /*xpaned->handle_pos_west.x,
1457                           xpaned->handle_pos_west.y + 1,
1458                           xpaned->handle_pos_west.width + handle_size + xpaned->handle_pos_east.width,
1459                           handle_size - 2, */
1460                         GTK_ORIENTATION_HORIZONTAL);
1461
1462       gtk_paint_handle (gtk_widget_get_style (widget),
1463                         cr,
1464                         state,
1465                         GTK_SHADOW_NONE,
1466                         widget,
1467                         "paned",
1468                         xpaned->handle_pos_north.x + 1,
1469                         xpaned->handle_pos_south.y - handle_size - 256 / 2,
1470                         handle_size - 2, 256 + handle_size,
1471                         /*xpaned->handle_pos_north.x + 1,
1472                           xpaned->handle_pos_north.y,
1473                           handle_size - 2,
1474                           xpaned->handle_pos_north.height + handle_size + xpaned->handle_pos_south.height, */
1475                         GTK_ORIENTATION_VERTICAL);
1476     }
1477
1478   /* Chain up to draw children */
1479   GTK_WIDGET_CLASS (parent_class)->draw (widget, cr);
1480
1481   return FALSE;
1482 }
1483
1484 static gboolean
1485 is_rtl (GtkXPaned * xpaned)
1486 {
1487   if (gtk_widget_get_direction (GTK_WIDGET (xpaned)) == GTK_TEXT_DIR_RTL)
1488     return TRUE;
1489
1490   return FALSE;
1491 }
1492
1493 static void
1494 update_drag (GtkXPaned * xpaned)
1495 {
1496   GdkPoint pos;
1497   gint handle_size;
1498   GtkRequisition size;
1499   GtkAllocation allocation;
1500   gtk_widget_get_allocation (GTK_WIDGET (xpaned), &allocation);
1501
1502   gtk_widget_get_pointer (GTK_WIDGET (xpaned), &pos.x, &pos.y);
1503
1504   if (xpaned->in_drag_vert)
1505     {
1506       pos.y -= xpaned->drag_pos.y;
1507
1508       if (is_rtl (xpaned))
1509         {
1510           gtk_widget_style_get (GTK_WIDGET (xpaned),
1511                                 "handle-size", &handle_size, NULL);
1512
1513           size.height = allocation.height - pos.y - handle_size;
1514         }
1515       else
1516         {
1517           size.height = pos.y;
1518         }
1519
1520       size.height -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1521
1522       size.height =
1523         CLAMP (size.height, xpaned->min_position.y, xpaned->max_position.y);
1524
1525       if (size.height != xpaned->top_left_child_size.height)
1526         gtk_xpaned_set_position_y (xpaned, size.height);
1527     }
1528
1529   if (xpaned->in_drag_horiz)
1530     {
1531       pos.x -= xpaned->drag_pos.x;
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         }
1540       else
1541         {
1542           size.width = pos.x;
1543         }
1544
1545       size.width -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1546
1547       size.width =
1548         CLAMP (size.width, xpaned->min_position.x, xpaned->max_position.x);
1549
1550       if (size.width != xpaned->top_left_child_size.width)
1551         gtk_xpaned_set_position_x (xpaned, size.width);
1552     }
1553
1554   if (xpaned->in_drag_vert_and_horiz)
1555     {
1556       pos.x -= xpaned->drag_pos.x;
1557       pos.y -= xpaned->drag_pos.y;
1558
1559       if (is_rtl (xpaned))
1560         {
1561           gtk_widget_style_get (GTK_WIDGET (xpaned),
1562                                 "handle-size", &handle_size, NULL);
1563
1564           size.width = allocation.width - pos.x - handle_size;
1565           size.height = allocation.height - pos.y - handle_size;
1566         }
1567       else
1568         {
1569           size.width = pos.x;
1570           size.height = pos.y;
1571         }
1572
1573       size.width -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1574       size.height -= gtk_container_get_border_width (GTK_CONTAINER (xpaned));
1575
1576       size.width =
1577         CLAMP (size.width, xpaned->min_position.x, xpaned->max_position.x);
1578       size.height =
1579         CLAMP (size.height, xpaned->min_position.y, xpaned->max_position.y);
1580
1581       if (size.width != xpaned->top_left_child_size.width)
1582         gtk_xpaned_set_position_x (xpaned, size.width);
1583
1584       if (size.height != xpaned->top_left_child_size.height)
1585         gtk_xpaned_set_position_y (xpaned, size.height);
1586     }
1587 }
1588
1589 static gboolean
1590 gtk_xpaned_enter (GtkWidget * widget, GdkEventCrossing * event)
1591 {
1592   GtkXPaned *xpaned = GTK_XPANED (widget);
1593
1594   if (xpaned->in_drag_vert ||
1595       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1596     update_drag (xpaned);
1597   else
1598     {
1599       xpaned->handle_prelit = TRUE;
1600
1601       gtk_widget_queue_draw_area (widget,
1602                                   xpaned->handle_pos_east.x,
1603                                   xpaned->handle_pos_east.y,
1604                                   xpaned->handle_pos_east.width,
1605                                   xpaned->handle_pos_east.height);
1606
1607       gtk_widget_queue_draw_area (widget,
1608                                   xpaned->handle_pos_west.x,
1609                                   xpaned->handle_pos_west.y,
1610                                   xpaned->handle_pos_west.width,
1611                                   xpaned->handle_pos_west.height);
1612
1613       gtk_widget_queue_draw_area (widget,
1614                                   xpaned->handle_pos_north.x,
1615                                   xpaned->handle_pos_north.y,
1616                                   xpaned->handle_pos_north.width,
1617                                   xpaned->handle_pos_north.height);
1618
1619       gtk_widget_queue_draw_area (widget,
1620                                   xpaned->handle_pos_south.x,
1621                                   xpaned->handle_pos_south.y,
1622                                   xpaned->handle_pos_south.width,
1623                                   xpaned->handle_pos_south.height);
1624
1625       gtk_widget_queue_draw_area (widget,
1626                                   xpaned->handle_pos_middle.x,
1627                                   xpaned->handle_pos_middle.y,
1628                                   xpaned->handle_pos_middle.width,
1629                                   xpaned->handle_pos_middle.height);
1630     }
1631
1632   return TRUE;
1633 }
1634
1635 static gboolean
1636 gtk_xpaned_leave (GtkWidget * widget, GdkEventCrossing * event)
1637 {
1638   GtkXPaned *xpaned = GTK_XPANED (widget);
1639
1640   if (xpaned->in_drag_vert ||
1641       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1642     update_drag (xpaned);
1643   else
1644     {
1645       xpaned->handle_prelit = FALSE;
1646
1647       gtk_widget_queue_draw_area (widget,
1648                                   xpaned->handle_pos_east.x,
1649                                   xpaned->handle_pos_east.y,
1650                                   xpaned->handle_pos_east.width,
1651                                   xpaned->handle_pos_east.height);
1652
1653       gtk_widget_queue_draw_area (widget,
1654                                   xpaned->handle_pos_west.x,
1655                                   xpaned->handle_pos_west.y,
1656                                   xpaned->handle_pos_west.width,
1657                                   xpaned->handle_pos_west.height);
1658
1659       gtk_widget_queue_draw_area (widget,
1660                                   xpaned->handle_pos_north.x,
1661                                   xpaned->handle_pos_north.y,
1662                                   xpaned->handle_pos_north.width,
1663                                   xpaned->handle_pos_north.height);
1664
1665       gtk_widget_queue_draw_area (widget,
1666                                   xpaned->handle_pos_south.x,
1667                                   xpaned->handle_pos_south.y,
1668                                   xpaned->handle_pos_south.width,
1669                                   xpaned->handle_pos_south.height);
1670
1671       gtk_widget_queue_draw_area (widget,
1672                                   xpaned->handle_pos_middle.x,
1673                                   xpaned->handle_pos_middle.y,
1674                                   xpaned->handle_pos_middle.width,
1675                                   xpaned->handle_pos_middle.height);
1676     }
1677
1678   return TRUE;
1679 }
1680
1681 static gboolean
1682 gtk_xpaned_focus (GtkWidget * widget, GtkDirectionType direction)
1683 {
1684   gboolean retval;
1685
1686   /* This is a hack, but how can this be done without
1687    * excessive cut-and-paste from gtkcontainer.c?
1688    */
1689
1690   gtk_widget_set_can_focus (GTK_WIDGET (widget), FALSE);
1691   retval = (*GTK_WIDGET_CLASS (parent_class)->focus) (widget, direction);
1692   gtk_widget_set_can_focus (GTK_WIDGET (widget), TRUE);
1693
1694   return retval;
1695 }
1696
1697 static gboolean
1698 gtk_xpaned_button_press (GtkWidget * widget, GdkEventButton * event)
1699 {
1700   GtkXPaned *xpaned = GTK_XPANED (widget);
1701
1702   /* if any child is currently maximized, jump right back */
1703   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
1704       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
1705       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
1706       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
1707     return FALSE;
1708
1709   /* if user is dragging the handles around */
1710   if (!xpaned->in_drag_vert_and_horiz &&
1711       event->window != xpaned->handle_east &&
1712       event->window != xpaned->handle_west &&
1713       event->window != xpaned->handle_north &&
1714       event->window != xpaned->handle_south &&
1715       event->window == xpaned->handle_middle && event->button == 1)
1716     {
1717       xpaned->in_drag_vert_and_horiz = TRUE;
1718
1719       /* We need a server grab here, not gtk_grab_add(), since
1720        * we don't want to pass events on to the widget's children */
1721       if (gdk_pointer_grab (xpaned->handle_middle,
1722                             FALSE,
1723                             GDK_POINTER_MOTION_HINT_MASK
1724                             | GDK_BUTTON1_MOTION_MASK
1725                             | GDK_BUTTON_RELEASE_MASK
1726                             | GDK_ENTER_NOTIFY_MASK
1727                             | GDK_LEAVE_NOTIFY_MASK,
1728                             NULL, NULL, event->time) == GDK_GRAB_SUCCESS)
1729         {
1730         }
1731
1732       xpaned->drag_pos.x = event->x;
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_east,
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_vert &&
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_vert = 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_west,
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.y = event->y;
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_north,
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   else if (!xpaned->in_drag_horiz &&
1816            event->window != xpaned->handle_east &&
1817            event->window != xpaned->handle_west &&
1818            event->window != xpaned->handle_north &&
1819            event->window == xpaned->handle_south &&
1820            event->window != xpaned->handle_middle && event->button == 1)
1821     {
1822       xpaned->in_drag_horiz = TRUE;
1823
1824       /* We need a server grab here, not gtk_grab_add(), since
1825        * we don't want to pass events on to the widget's children */
1826       if (gdk_pointer_grab (xpaned->handle_south,
1827                             FALSE,
1828                             GDK_POINTER_MOTION_HINT_MASK
1829                             | GDK_BUTTON1_MOTION_MASK
1830                             | GDK_BUTTON_RELEASE_MASK
1831                             | GDK_ENTER_NOTIFY_MASK
1832                             | GDK_LEAVE_NOTIFY_MASK,
1833                             NULL, NULL, event->time) == GDK_GRAB_SUCCESS)
1834         {
1835         }
1836
1837       xpaned->drag_pos.x = event->x;
1838
1839       return TRUE;
1840     }
1841   return FALSE;
1842 }
1843
1844 static gboolean
1845 gtk_xpaned_button_release (GtkWidget * widget, GdkEventButton * event)
1846 {
1847   GtkXPaned *xpaned = GTK_XPANED (widget);
1848
1849   if (xpaned->in_drag_vert && (event->button == 1))
1850     {
1851       xpaned->in_drag_vert = FALSE;
1852       xpaned->drag_pos.y = -1;
1853       xpaned->position_set = TRUE;
1854       gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
1855                                   event->time);
1856       return TRUE;
1857     }
1858   else if (xpaned->in_drag_horiz && (event->button == 1))
1859     {
1860       xpaned->in_drag_horiz = FALSE;
1861       xpaned->drag_pos.x = -1;
1862       xpaned->position_set = TRUE;
1863       gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
1864                                   event->time);
1865       return TRUE;
1866     }
1867   else if (xpaned->in_drag_vert_and_horiz && (event->button == 1))
1868     {
1869       xpaned->in_drag_vert_and_horiz = FALSE;
1870       xpaned->drag_pos.x = -1;
1871       xpaned->drag_pos.y = -1;
1872       xpaned->position_set = TRUE;
1873       gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
1874                                   event->time);
1875       return TRUE;
1876     }
1877
1878   return FALSE;
1879 }
1880
1881 static gboolean
1882 gtk_xpaned_motion (GtkWidget * widget, GdkEventMotion * event)
1883 {
1884   GtkXPaned *xpaned = GTK_XPANED (widget);
1885
1886   if (xpaned->in_drag_vert ||
1887       xpaned->in_drag_horiz || xpaned->in_drag_vert_and_horiz)
1888
1889     {
1890       update_drag (xpaned);
1891       return TRUE;
1892     }
1893
1894   return FALSE;
1895 }
1896
1897 void
1898 gtk_xpaned_add_top_left (GtkXPaned * xpaned, GtkWidget * widget)
1899 {
1900   gtk_xpaned_pack_top_left (xpaned, widget, FALSE, TRUE);
1901 }
1902
1903 void
1904 gtk_xpaned_add_top_right (GtkXPaned * xpaned, GtkWidget * widget)
1905 {
1906   gtk_xpaned_pack_top_right (xpaned, widget, FALSE, TRUE);
1907 }
1908
1909 void
1910 gtk_xpaned_add_bottom_left (GtkXPaned * xpaned, GtkWidget * widget)
1911 {
1912   gtk_xpaned_pack_bottom_left (xpaned, widget, FALSE, TRUE);
1913 }
1914
1915 void
1916 gtk_xpaned_add_bottom_right (GtkXPaned * xpaned, GtkWidget * widget)
1917 {
1918   gtk_xpaned_pack_bottom_right (xpaned, widget, FALSE, TRUE);
1919 }
1920
1921 void
1922 gtk_xpaned_pack_top_left (GtkXPaned * xpaned,
1923                           GtkWidget * child, gboolean resize, gboolean shrink)
1924 {
1925   g_return_if_fail (GTK_IS_XPANED (xpaned));
1926   g_return_if_fail (GTK_IS_WIDGET (child));
1927
1928   if (!xpaned->top_left_child)
1929     {
1930       xpaned->top_left_child = child;
1931       xpaned->top_left_child_resize = resize;
1932       xpaned->top_left_child_shrink = shrink;
1933
1934       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1935     }
1936 }
1937
1938 void
1939 gtk_xpaned_pack_top_right (GtkXPaned * xpaned,
1940                            GtkWidget * child,
1941                            gboolean resize, gboolean shrink)
1942 {
1943   g_return_if_fail (GTK_IS_XPANED (xpaned));
1944   g_return_if_fail (GTK_IS_WIDGET (child));
1945
1946   if (!xpaned->top_right_child)
1947     {
1948       xpaned->top_right_child = child;
1949       xpaned->top_right_child_resize = resize;
1950       xpaned->top_right_child_shrink = shrink;
1951
1952       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1953     }
1954 }
1955
1956 void
1957 gtk_xpaned_pack_bottom_left (GtkXPaned * xpaned,
1958                              GtkWidget * child,
1959                              gboolean resize, gboolean shrink)
1960 {
1961   g_return_if_fail (GTK_IS_XPANED (xpaned));
1962   g_return_if_fail (GTK_IS_WIDGET (child));
1963
1964   if (!xpaned->bottom_left_child)
1965     {
1966       xpaned->bottom_left_child = child;
1967       xpaned->bottom_left_child_resize = resize;
1968       xpaned->bottom_left_child_shrink = shrink;
1969
1970       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1971     }
1972 }
1973
1974 void
1975 gtk_xpaned_pack_bottom_right (GtkXPaned * xpaned,
1976                               GtkWidget * child,
1977                               gboolean resize, gboolean shrink)
1978 {
1979   g_return_if_fail (GTK_IS_XPANED (xpaned));
1980   g_return_if_fail (GTK_IS_WIDGET (child));
1981
1982   if (!xpaned->bottom_right_child)
1983     {
1984       xpaned->bottom_right_child = child;
1985       xpaned->bottom_right_child_resize = resize;
1986       xpaned->bottom_right_child_shrink = shrink;
1987
1988       gtk_widget_set_parent (child, GTK_WIDGET (xpaned));
1989     }
1990 }
1991
1992 static void
1993 gtk_xpaned_add (GtkContainer * container, GtkWidget * widget)
1994 {
1995   GtkXPaned *xpaned;
1996
1997   g_return_if_fail (GTK_IS_XPANED (container));
1998
1999   xpaned = GTK_XPANED (container);
2000
2001   if (!xpaned->top_left_child)
2002     gtk_xpaned_add_top_left (xpaned, widget);
2003   else if (!xpaned->top_right_child)
2004     gtk_xpaned_add_top_right (xpaned, widget);
2005   else if (!xpaned->bottom_left_child)
2006     gtk_xpaned_add_bottom_left (xpaned, widget);
2007   else if (!xpaned->bottom_right_child)
2008     gtk_xpaned_add_bottom_right (xpaned, widget);
2009   else
2010     g_warning ("GtkXPaned cannot have more than 4 children\n");
2011 }
2012
2013 static void
2014 gtk_xpaned_remove (GtkContainer * container, GtkWidget * widget)
2015 {
2016   GtkXPaned *xpaned;
2017   gboolean was_visible;
2018
2019   xpaned = GTK_XPANED (container);
2020   was_visible = gtk_widget_get_visible (widget);
2021
2022   if (xpaned->top_left_child == widget)
2023     {
2024       gtk_widget_unparent (widget);
2025
2026       xpaned->top_left_child = NULL;
2027
2028       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
2029         gtk_widget_queue_resize (GTK_WIDGET (container));
2030     }
2031   else if (xpaned->top_right_child == widget)
2032     {
2033       gtk_widget_unparent (widget);
2034
2035       xpaned->top_right_child = NULL;
2036
2037       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
2038         gtk_widget_queue_resize (GTK_WIDGET (container));
2039     }
2040   else if (xpaned->bottom_left_child == widget)
2041     {
2042       gtk_widget_unparent (widget);
2043
2044       xpaned->bottom_left_child = NULL;
2045
2046       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
2047         gtk_widget_queue_resize (GTK_WIDGET (container));
2048     }
2049   else if (xpaned->bottom_right_child == widget)
2050     {
2051       gtk_widget_unparent (widget);
2052
2053       xpaned->bottom_right_child = NULL;
2054
2055       if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
2056         gtk_widget_queue_resize (GTK_WIDGET (container));
2057     }
2058   else
2059     g_warning ("GtkXPaned has no more children attached\n");
2060
2061 }
2062
2063 static void
2064 gtk_xpaned_forall (GtkContainer * container,
2065                    gboolean include_internals,
2066                    GtkCallback callback, gpointer callback_data)
2067 {
2068   GtkXPaned *xpaned;
2069
2070   g_return_if_fail (callback != NULL);
2071
2072   xpaned = GTK_XPANED (container);
2073
2074   if (xpaned->top_left_child)
2075     (*callback) (xpaned->top_left_child, callback_data);
2076   if (xpaned->top_right_child)
2077     (*callback) (xpaned->top_right_child, callback_data);
2078   if (xpaned->bottom_left_child)
2079     (*callback) (xpaned->bottom_left_child, callback_data);
2080   if (xpaned->bottom_right_child)
2081     (*callback) (xpaned->bottom_right_child, callback_data);
2082 }
2083
2084 /**
2085  * gtk_xpaned_get_position_x:
2086  * @paned: a #GtkXPaned widget
2087  *
2088  * Obtains the x-position of the divider.
2089  *
2090  * Return value: x-position of the divider
2091  **/
2092 gint
2093 gtk_xpaned_get_position_x (GtkXPaned * xpaned)
2094 {
2095   g_return_val_if_fail (GTK_IS_XPANED (xpaned), 0);
2096
2097   return xpaned->top_left_child_size.width;
2098 }
2099
2100 /**
2101  * gtk_xpaned_get_position_y:
2102  * @paned: a #GtkXPaned widget
2103  *
2104  * Obtains the y-position of the divider.
2105  *
2106  * Return value: y-position of the divider
2107  **/
2108 gint
2109 gtk_xpaned_get_position_y (GtkXPaned * xpaned)
2110 {
2111   g_return_val_if_fail (GTK_IS_XPANED (xpaned), 0);
2112
2113   return xpaned->top_left_child_size.height;
2114 }
2115
2116 /**
2117  * gtk_xpaned_set_position_x:
2118  * @paned: a #GtkXPaned widget
2119  * @xposition: pixel x-position of divider, a negative values
2120  *                         of a component mean that the position is unset.
2121  *
2122  * Sets the x-position of the divider between the four panes.
2123  **/
2124 void
2125 gtk_xpaned_set_position_x (GtkXPaned * xpaned, gint xposition)
2126 {
2127   GObject *object;
2128
2129   g_return_if_fail (GTK_IS_XPANED (xpaned));
2130
2131   /* if any child is currently maximized, jump right back */
2132   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
2133       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
2134       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
2135       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2136     return;
2137
2138   object = G_OBJECT (xpaned);
2139
2140   if (xposition >= 0)
2141     {
2142       /* We don't clamp here - the assumption is that
2143        * if the total allocation changes at the same time
2144        * as the position, the position set is with reference
2145        * to the new total size. If only the position changes,
2146        * then clamping will occur in gtk_paned_compute_position()
2147        */
2148
2149       xpaned->top_left_child_size.width = xposition;
2150       xpaned->position_set = TRUE;
2151     }
2152   else
2153     {
2154       xpaned->position_set = FALSE;
2155     }
2156
2157   g_object_freeze_notify (object);
2158   g_object_notify (object, "x-position");
2159   g_object_notify (object, "position-set");
2160   g_object_thaw_notify (object);
2161
2162   gtk_widget_queue_resize (GTK_WIDGET (xpaned));
2163 }
2164
2165 /**
2166  * gtk_xpaned_set_position_y:
2167  * @paned: a #GtkXPaned widget
2168  * @yposition: pixel y-position of divider, a negative values
2169  *                         of a component mean that the position is unset.
2170  *
2171  * Sets the y-position of the divider between the four panes.
2172  **/
2173 void
2174 gtk_xpaned_set_position_y (GtkXPaned * xpaned, gint yposition)
2175 {
2176   GObject *object;
2177
2178   g_return_if_fail (GTK_IS_XPANED (xpaned));
2179
2180   /* if any child is currently maximized, jump right back */
2181   if (xpaned->maximized[GTK_XPANED_TOP_LEFT] ||
2182       xpaned->maximized[GTK_XPANED_TOP_RIGHT] ||
2183       xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] ||
2184       xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2185     return;
2186
2187   object = G_OBJECT (xpaned);
2188
2189   if (yposition >= 0)
2190     {
2191       /* We don't clamp here - the assumption is that
2192        * if the total allocation changes at the same time
2193        * as the position, the position set is with reference
2194        * to the new total size. If only the position changes,
2195        * then clamping will occur in gtk_paned_compute_position()
2196        */
2197
2198       xpaned->top_left_child_size.height = yposition;
2199       xpaned->position_set = TRUE;
2200     }
2201   else
2202     {
2203       xpaned->position_set = FALSE;
2204     }
2205
2206   g_object_freeze_notify (object);
2207   g_object_notify (object, "y-position");
2208   g_object_notify (object, "position-set");
2209   g_object_thaw_notify (object);
2210
2211   gtk_widget_queue_resize (GTK_WIDGET (xpaned));
2212 }
2213
2214 /* this call is private and only intended for internal use! */
2215 void
2216 gtk_xpaned_save_unmaximized_x (GtkXPaned * xpaned)
2217 {
2218   xpaned->unmaximized_position.x = gtk_xpaned_get_position_x (xpaned);
2219 }
2220
2221 /* this call is private and only intended for internal use! */
2222 void
2223 gtk_xpaned_save_unmaximized_y (GtkXPaned * xpaned)
2224 {
2225   xpaned->unmaximized_position.y = gtk_xpaned_get_position_y (xpaned);
2226 }
2227
2228 /* this call is private and only intended for internal use! */
2229 gint
2230 gtk_xpaned_fetch_unmaximized_x (GtkXPaned * xpaned)
2231 {
2232   return xpaned->unmaximized_position.x;
2233 }
2234
2235 /* this call is private and only intended for internal use! */
2236 gint
2237 gtk_xpaned_fetch_unmaximized_y (GtkXPaned * xpaned)
2238 {
2239   return xpaned->unmaximized_position.y;
2240 }
2241
2242 /**
2243  * gtk_xpaned_get_top_left_child:
2244  * @xpaned: a #GtkXPaned widget
2245  *
2246  * Obtains the top-left child of the xpaned widget.
2247  *
2248  * Return value: top-left child, or %NULL if it is not set.
2249  *
2250  * Since: 2.4
2251  **/
2252 GtkWidget *
2253 gtk_xpaned_get_top_left_child (GtkXPaned * xpaned)
2254 {
2255   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2256
2257   return xpaned->top_left_child;
2258 }
2259
2260 /**
2261  * gtk_xpaned_get_top_right_child:
2262  * @xpaned: a #GtkXPaned widget
2263  *
2264  * Obtains the top-right child of the xpaned widget.
2265  *
2266  * Return value: top-right child, or %NULL if it is not set.
2267  *
2268  * Since: 2.4
2269  **/
2270 GtkWidget *
2271 gtk_xpaned_get_top_right_child (GtkXPaned * xpaned)
2272 {
2273   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2274
2275   return xpaned->top_right_child;
2276 }
2277
2278 /**
2279  * gtk_xpaned_get_bottom_left_child:
2280  * @xpaned: a #GtkXPaned widget
2281  *
2282  * Obtains the bottom-left child of the xpaned widget.
2283  *
2284  * Return value: bottom-left child, or %NULL if it is not set.
2285  *
2286  * Since: 2.4
2287  **/
2288 GtkWidget *
2289 gtk_xpaned_get_bottom_left_child (GtkXPaned * xpaned)
2290 {
2291   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2292
2293   return xpaned->bottom_left_child;
2294 }
2295
2296 /**
2297  * gtk_xpaned_get_bottom_right_child:
2298  * @xpaned: a #GtkXPaned widget
2299  *
2300  * Obtains the bottom-right child of the xpaned widget.
2301  *
2302  * Return value: bottom-right child, or %NULL if it is not set.
2303  *
2304  * Since: 2.4
2305  **/
2306 GtkWidget *
2307 gtk_xpaned_get_bottom_right_child (GtkXPaned * xpaned)
2308 {
2309   g_return_val_if_fail (GTK_IS_XPANED (xpaned), NULL);
2310
2311   return xpaned->bottom_right_child;
2312 }
2313
2314 gboolean
2315 gtk_xpaned_maximize_top_left (GtkXPaned * xpaned, gboolean maximize)
2316 {
2317   if (maximize)
2318     {
2319       /* see if any child is already maximized */
2320       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2321           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2322           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2323           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2324         {
2325           /* save current position */
2326           gtk_xpaned_save_unmaximized_x (xpaned);
2327           gtk_xpaned_save_unmaximized_y (xpaned);
2328
2329           /* set new maximized position */
2330           gtk_xpaned_set_position_x (xpaned, xpaned->max_position.x);
2331           gtk_xpaned_set_position_y (xpaned, xpaned->max_position.y);
2332
2333           /* mark maximized flag for top-left child */
2334           xpaned->maximized[GTK_XPANED_TOP_LEFT] = TRUE;
2335
2336           return TRUE;
2337         }
2338       /* already one child maximized, report error */
2339       else
2340         return FALSE;
2341     }
2342   else
2343     {
2344       /* verify that top-left child is really currently maximized */
2345       if (xpaned->maximized[GTK_XPANED_TOP_LEFT])
2346         {
2347           /* clear maximized flat for top-left child */
2348           xpaned->maximized[GTK_XPANED_TOP_LEFT] = FALSE;
2349
2350           /* restore unmaximized position */
2351           gtk_xpaned_set_position_x (xpaned,
2352                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2353           gtk_xpaned_set_position_y (xpaned,
2354                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2355
2356           return TRUE;
2357         }
2358       /* top-left child is currently not maximized, report error */
2359       else
2360         return FALSE;
2361     }
2362 }
2363
2364 gboolean
2365 gtk_xpaned_maximize_top_right (GtkXPaned * xpaned, gboolean maximize)
2366 {
2367   if (maximize)
2368     {
2369       /* see if any child is already maximized */
2370       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2371           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2372           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2373           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2374         {
2375           /* save current position */
2376           gtk_xpaned_save_unmaximized_x (xpaned);
2377           gtk_xpaned_save_unmaximized_y (xpaned);
2378
2379           /* set new maximized position */
2380           gtk_xpaned_set_position_x (xpaned, xpaned->min_position.x);
2381           gtk_xpaned_set_position_y (xpaned, xpaned->max_position.y);
2382
2383           /* mark maximized flag for top-right child */
2384           xpaned->maximized[GTK_XPANED_TOP_RIGHT] = TRUE;
2385
2386           return TRUE;
2387         }
2388       /* already one child maximized, report error */
2389       else
2390         return FALSE;
2391     }
2392   else
2393     {
2394       /* verify that top-right child is really currently maximized */
2395       if (xpaned->maximized[GTK_XPANED_TOP_RIGHT])
2396         {
2397           /* clear maximized flat for top-right child */
2398           xpaned->maximized[GTK_XPANED_TOP_RIGHT] = FALSE;
2399
2400           /* restore unmaximized position */
2401           gtk_xpaned_set_position_x (xpaned,
2402                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2403           gtk_xpaned_set_position_y (xpaned,
2404                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2405
2406           return TRUE;
2407         }
2408       /* top-right child is currently not maximized, report error */
2409       else
2410         return FALSE;
2411     }
2412 }
2413
2414 gboolean
2415 gtk_xpaned_maximize_bottom_left (GtkXPaned * xpaned, gboolean maximize)
2416 {
2417   if (maximize)
2418     {
2419       /* see if any child is already maximized */
2420       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2421           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2422           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2423           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2424         {
2425           /* save current position */
2426           gtk_xpaned_save_unmaximized_x (xpaned);
2427           gtk_xpaned_save_unmaximized_y (xpaned);
2428
2429           /* set new maximized position */
2430           gtk_xpaned_set_position_x (xpaned, xpaned->max_position.x);
2431           gtk_xpaned_set_position_y (xpaned, xpaned->min_position.y);
2432
2433           /* mark maximized flag for bottom-left child */
2434           xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] = TRUE;
2435
2436           return TRUE;
2437         }
2438       /* already one child maximized, report error */
2439       else
2440         return FALSE;
2441     }
2442   else
2443     {
2444       /* verify that bottom-left child is really currently maximized */
2445       if (xpaned->maximized[GTK_XPANED_BOTTOM_LEFT])
2446         {
2447           /* clear maximized flat for bottom-left child */
2448           xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] = FALSE;
2449
2450           /* restore unmaximized position */
2451           gtk_xpaned_set_position_x (xpaned,
2452                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2453           gtk_xpaned_set_position_y (xpaned,
2454                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2455
2456           return TRUE;
2457         }
2458       /* bottom-left child is currently not maximized, report error */
2459       else
2460         return FALSE;
2461     }
2462 }
2463
2464 gboolean
2465 gtk_xpaned_maximize_bottom_right (GtkXPaned * xpaned, gboolean maximize)
2466 {
2467   if (maximize)
2468     {
2469       /* see if any child is already maximized */
2470       if (!xpaned->maximized[GTK_XPANED_TOP_LEFT] &&
2471           !xpaned->maximized[GTK_XPANED_TOP_RIGHT] &&
2472           !xpaned->maximized[GTK_XPANED_BOTTOM_LEFT] &&
2473           !xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2474         {
2475           /* save current position */
2476           gtk_xpaned_save_unmaximized_x (xpaned);
2477           gtk_xpaned_save_unmaximized_y (xpaned);
2478
2479           /* set new maximized position */
2480           gtk_xpaned_set_position_x (xpaned, xpaned->min_position.x);
2481           gtk_xpaned_set_position_y (xpaned, xpaned->min_position.y);
2482
2483           /* mark maximized flag for bottom-right child */
2484           xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT] = TRUE;
2485
2486           return TRUE;
2487         }
2488       /* already one child maximized, report error */
2489       else
2490         return FALSE;
2491     }
2492   else
2493     {
2494       /* verify that bottom-right child is really currently maximized */
2495       if (xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT])
2496         {
2497           /* clear maximized flat for bottom-right child */
2498           xpaned->maximized[GTK_XPANED_BOTTOM_RIGHT] = FALSE;
2499
2500           /* restore unmaximized position */
2501           gtk_xpaned_set_position_x (xpaned,
2502                                      gtk_xpaned_fetch_unmaximized_x (xpaned));
2503           gtk_xpaned_set_position_y (xpaned,
2504                                      gtk_xpaned_fetch_unmaximized_y (xpaned));
2505
2506           return TRUE;
2507         }
2508       /* bottom-right child is currently not maximized, report error */
2509       else
2510         return FALSE;
2511     }
2512 }
2513
2514 void
2515 gtk_xpaned_compute_position (GtkXPaned * xpaned,
2516                              const GtkAllocation * allocation,
2517                              GtkRequisition * top_left_child_req,
2518                              GtkRequisition * top_right_child_req,
2519                              GtkRequisition * bottom_left_child_req,
2520                              GtkRequisition * bottom_right_child_req)
2521 {
2522   GdkPoint old_position;
2523   GdkPoint old_min_position;
2524   GdkPoint old_max_position;
2525   gint handle_size;
2526   gint border_width = gtk_container_get_border_width (GTK_CONTAINER (xpaned));
2527
2528   g_return_if_fail (GTK_IS_XPANED (xpaned));
2529
2530   old_position.x = xpaned->top_left_child_size.width;
2531   old_position.y = xpaned->top_left_child_size.height;
2532   old_min_position.x = xpaned->min_position.x;
2533   old_min_position.y = xpaned->min_position.y;
2534   old_max_position.x = xpaned->max_position.x;
2535   old_max_position.y = xpaned->max_position.y;
2536
2537   xpaned->min_position.x =
2538     xpaned->top_left_child_shrink ? 0 : top_left_child_req->width;
2539   xpaned->min_position.y =
2540     xpaned->top_left_child_shrink ? 0 : top_left_child_req->height;
2541
2542   gtk_widget_style_get (GTK_WIDGET (xpaned), "handle-size", &handle_size,
2543                         NULL);
2544
2545   xpaned->max_position.x = allocation->width - 2 * border_width - handle_size;
2546   xpaned->max_position.y =
2547     allocation->height - 2 * border_width - handle_size;
2548   if (!xpaned->top_left_child_shrink)
2549     xpaned->max_position.x =
2550       MAX (1, xpaned->max_position.x - top_left_child_req->width);
2551   xpaned->max_position.x =
2552     MAX (xpaned->min_position.x, xpaned->max_position.x);
2553
2554   if (!xpaned->position_set)
2555     {
2556       if (xpaned->top_left_child_resize && !xpaned->top_right_child_resize)
2557         {
2558           xpaned->top_left_child_size.width =
2559             MAX (0, allocation->width - top_right_child_req->width);
2560           xpaned->top_left_child_size.height =
2561             MAX (0, allocation->height - top_right_child_req->height);
2562         }
2563       else if (!xpaned->top_left_child_resize
2564                && xpaned->top_right_child_resize)
2565         {
2566           xpaned->top_left_child_size.width = top_left_child_req->width;
2567           xpaned->top_left_child_size.height = top_left_child_req->height;
2568         }
2569       else
2570         {
2571           xpaned->top_left_child_size.width = allocation->width * 0.5 + 0.5;
2572           xpaned->top_left_child_size.height = allocation->height * 0.5 + 0.5;
2573         }
2574     }
2575   else
2576     {
2577       /* If the position was set before the initial allocation.
2578       ** (paned->last_allocation <= 0) just clamp it and leave it. */
2579       if (xpaned->last_allocation.width > 0)
2580         {
2581           if (xpaned->top_left_child_resize
2582               && !xpaned->top_right_child_resize)
2583             {
2584               xpaned->top_left_child_size.width += allocation->width
2585                 - xpaned->last_allocation.width;
2586
2587               xpaned->top_left_child_size.height += allocation->height
2588                 - xpaned->last_allocation.height;
2589             }
2590           else
2591             if (!
2592                 (!xpaned->top_left_child_resize
2593                  && xpaned->top_right_child_resize))
2594               {
2595                 xpaned->top_left_child_size.width = allocation->width
2596                   * ((gdouble) xpaned->top_left_child_size.width /
2597                      (xpaned->last_allocation.width)) + 0.5;
2598
2599                 xpaned->top_left_child_size.height = allocation->height
2600                   * ((gdouble) xpaned->top_left_child_size.height /
2601                      (xpaned->last_allocation.height)) + 0.5;
2602               }
2603         }
2604       if (xpaned->last_allocation.height > 0)
2605         {
2606           if (xpaned->top_left_child_resize
2607               && !xpaned->top_right_child_resize)
2608             {
2609               xpaned->top_left_child_size.width +=
2610                 allocation->width - xpaned->last_allocation.width;
2611               xpaned->top_left_child_size.height +=
2612                 allocation->height - xpaned->last_allocation.height;
2613             }
2614           else
2615             if (!
2616                 (!xpaned->top_left_child_resize
2617                  && xpaned->top_right_child_resize))
2618               {
2619                 xpaned->top_left_child_size.width =
2620                   allocation->width *
2621                   ((gdouble) xpaned->top_left_child_size.width /
2622                    (xpaned->last_allocation.width)) + 0.5;
2623                 xpaned->top_left_child_size.height =
2624                   allocation->height *
2625                   ((gdouble) xpaned->top_left_child_size.height /
2626                    (xpaned->last_allocation.height)) + 0.5;
2627               }
2628         }
2629
2630     }
2631
2632   xpaned->top_left_child_size.width =
2633     CLAMP (xpaned->top_left_child_size.width, xpaned->min_position.x,
2634            xpaned->max_position.x);
2635   xpaned->top_left_child_size.height =
2636     CLAMP (xpaned->top_left_child_size.height, xpaned->min_position.y,
2637            xpaned->max_position.y);
2638
2639   xpaned->top_right_child_size.width =
2640     CLAMP (xpaned->top_right_child_size.width, xpaned->min_position.x,
2641            xpaned->max_position.x);
2642   xpaned->top_right_child_size.height =
2643     CLAMP (xpaned->top_right_child_size.height, xpaned->min_position.y,
2644            xpaned->max_position.y);
2645
2646   xpaned->bottom_left_child_size.width =
2647     CLAMP (xpaned->bottom_left_child_size.width, xpaned->min_position.x,
2648            xpaned->max_position.x);
2649   xpaned->bottom_left_child_size.height =
2650     CLAMP (xpaned->bottom_left_child_size.height, xpaned->min_position.y,
2651            xpaned->max_position.y);
2652
2653   xpaned->bottom_right_child_size.width =
2654     CLAMP (xpaned->bottom_right_child_size.width, xpaned->min_position.x,
2655            xpaned->max_position.x);
2656   xpaned->bottom_right_child_size.height =
2657     CLAMP (xpaned->bottom_right_child_size.height, xpaned->min_position.y,
2658            xpaned->max_position.y);
2659
2660   gtk_widget_set_child_visible (xpaned->top_left_child, TRUE);
2661   gtk_widget_set_child_visible (xpaned->top_right_child, TRUE);
2662   gtk_widget_set_child_visible (xpaned->bottom_left_child, TRUE);
2663   gtk_widget_set_child_visible (xpaned->bottom_right_child, TRUE);
2664
2665   g_object_freeze_notify (G_OBJECT (xpaned));
2666
2667   if (xpaned->top_left_child_size.width != old_position.x)
2668     g_object_notify (G_OBJECT (xpaned), "x-position");
2669   if (xpaned->top_left_child_size.height != old_position.y)
2670     g_object_notify (G_OBJECT (xpaned), "y-position");
2671
2672   if (xpaned->top_right_child_size.width != old_position.x)
2673     g_object_notify (G_OBJECT (xpaned), "x-position");
2674   if (xpaned->top_right_child_size.height != old_position.y)
2675     g_object_notify (G_OBJECT (xpaned), "y-position");
2676
2677   if (xpaned->bottom_left_child_size.width != old_position.x)
2678     g_object_notify (G_OBJECT (xpaned), "x-position");
2679   if (xpaned->bottom_left_child_size.height != old_position.y)
2680     g_object_notify (G_OBJECT (xpaned), "y-position");
2681
2682   if (xpaned->bottom_right_child_size.width != old_position.x)
2683     g_object_notify (G_OBJECT (xpaned), "x-position");
2684   if (xpaned->bottom_right_child_size.height != old_position.y)
2685     g_object_notify (G_OBJECT (xpaned), "y-position");
2686
2687   if (xpaned->min_position.x != old_min_position.x)
2688     g_object_notify (G_OBJECT (xpaned), "min-x-position");
2689   if (xpaned->min_position.y != old_min_position.y)
2690     g_object_notify (G_OBJECT (xpaned), "min-y-position");
2691
2692   if (xpaned->max_position.x != old_max_position.x)
2693     g_object_notify (G_OBJECT (xpaned), "max-y-position");
2694   if (xpaned->max_position.y != old_max_position.y)
2695     g_object_notify (G_OBJECT (xpaned), "max-y-position");
2696
2697   g_object_thaw_notify (G_OBJECT (xpaned));
2698
2699   xpaned->last_allocation.width = allocation->width;
2700   xpaned->last_allocation.height = allocation->height;
2701 }
2702
2703 static void
2704 gtk_xpaned_set_saved_focus (GtkXPaned * xpaned, GtkWidget * widget)
2705 {
2706   if (xpaned->priv->saved_focus)
2707     g_object_remove_weak_pointer (G_OBJECT (xpaned->priv->saved_focus),
2708                                   (gpointer *) & (xpaned->priv->saved_focus));
2709
2710   xpaned->priv->saved_focus = widget;
2711
2712   if (xpaned->priv->saved_focus)
2713     g_object_add_weak_pointer (G_OBJECT (xpaned->priv->saved_focus),
2714                                (gpointer *) & (xpaned->priv->saved_focus));
2715 }
2716
2717 static void
2718 gtk_xpaned_set_first_xpaned (GtkXPaned * xpaned, GtkXPaned * first_xpaned)
2719 {
2720   if (xpaned->priv->first_xpaned)
2721     g_object_remove_weak_pointer (G_OBJECT (xpaned->priv->first_xpaned),
2722                                   (gpointer *) & (xpaned->priv->
2723                                                   first_xpaned));
2724
2725   xpaned->priv->first_xpaned = first_xpaned;
2726
2727   if (xpaned->priv->first_xpaned)
2728     g_object_add_weak_pointer (G_OBJECT (xpaned->priv->first_xpaned),
2729                                (gpointer *) & (xpaned->priv->first_xpaned));
2730 }
2731
2732 static void
2733 gtk_xpaned_set_last_top_left_child_focus (GtkXPaned * xpaned,
2734                                           GtkWidget * widget)
2735 {
2736   if (xpaned->last_top_left_child_focus)
2737     g_object_remove_weak_pointer (G_OBJECT
2738                                   (xpaned->last_top_left_child_focus),
2739                                   (gpointer *) & (xpaned->
2740                                                   last_top_left_child_focus));
2741
2742   xpaned->last_top_left_child_focus = widget;
2743
2744   if (xpaned->last_top_left_child_focus)
2745     g_object_add_weak_pointer (G_OBJECT (xpaned->last_top_left_child_focus),
2746                                (gpointer *) & (xpaned->
2747                                                last_top_left_child_focus));
2748 }
2749
2750 static void
2751 gtk_xpaned_set_last_top_right_child_focus (GtkXPaned * xpaned,
2752                                            GtkWidget * widget)
2753 {
2754   if (xpaned->last_top_right_child_focus)
2755     g_object_remove_weak_pointer (G_OBJECT
2756                                   (xpaned->last_top_right_child_focus),
2757                                   (gpointer *) & (xpaned->
2758                                                   last_top_right_child_focus));
2759
2760   xpaned->last_top_right_child_focus = widget;
2761
2762   if (xpaned->last_top_right_child_focus)
2763     g_object_add_weak_pointer (G_OBJECT (xpaned->last_top_right_child_focus),
2764                                (gpointer *) & (xpaned->
2765                                                last_top_right_child_focus));
2766 }
2767
2768 static void
2769 gtk_xpaned_set_last_bottom_left_child_focus (GtkXPaned * xpaned,
2770                                              GtkWidget * widget)
2771 {
2772   if (xpaned->last_bottom_left_child_focus)
2773     g_object_remove_weak_pointer (G_OBJECT
2774                                   (xpaned->last_bottom_left_child_focus),
2775                                   (gpointer *) & (xpaned->
2776                                                   last_bottom_left_child_focus));
2777
2778   xpaned->last_bottom_left_child_focus = widget;
2779
2780   if (xpaned->last_bottom_left_child_focus)
2781     g_object_add_weak_pointer (G_OBJECT
2782                                (xpaned->last_bottom_left_child_focus),
2783                                (gpointer *) & (xpaned->
2784                                                last_bottom_left_child_focus));
2785 }
2786
2787 static void
2788 gtk_xpaned_set_last_bottom_right_child_focus (GtkXPaned * xpaned,
2789                                               GtkWidget * widget)
2790 {
2791   if (xpaned->last_bottom_right_child_focus)
2792     g_object_remove_weak_pointer (G_OBJECT
2793                                   (xpaned->last_bottom_right_child_focus),
2794                                   (gpointer *) & (xpaned->
2795                                                   last_bottom_right_child_focus));
2796
2797   xpaned->last_bottom_right_child_focus = widget;
2798
2799   if (xpaned->last_bottom_right_child_focus)
2800     g_object_add_weak_pointer (G_OBJECT
2801                                (xpaned->last_bottom_right_child_focus),
2802                                (gpointer *) & (xpaned->
2803                                                last_bottom_right_child_focus));
2804 }
2805
2806 static GtkWidget *
2807 xpaned_get_focus_widget (GtkXPaned * xpaned)
2808 {
2809   GtkWidget *toplevel;
2810
2811   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
2812   if (gtk_widget_is_toplevel (toplevel))
2813     return gtk_window_get_focus (GTK_WINDOW (toplevel));
2814
2815   return NULL;
2816 }
2817
2818 static void
2819 gtk_xpaned_set_focus_child (GtkContainer * container, GtkWidget * focus_child)
2820 {
2821   GtkXPaned *xpaned;
2822
2823   g_return_if_fail (GTK_IS_XPANED (container));
2824
2825   xpaned = GTK_XPANED (container);
2826
2827   if (focus_child == NULL)
2828     {
2829       GtkWidget *last_focus;
2830       GtkWidget *w;
2831
2832       last_focus = xpaned_get_focus_widget (xpaned);
2833
2834       if (last_focus)
2835         {
2836           /* If there is one or more paned widgets between us and the
2837            * focus widget, we want the topmost of those as last_focus
2838            */
2839           for (w = last_focus; w != GTK_WIDGET (xpaned); w = gtk_widget_get_parent (w))
2840             if (GTK_IS_XPANED (w))
2841               last_focus = w;
2842
2843           if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2844             gtk_xpaned_set_last_top_left_child_focus (xpaned, last_focus);
2845           else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2846             gtk_xpaned_set_last_top_right_child_focus (xpaned, last_focus);
2847           else if (gtk_container_get_focus_child (container) == xpaned->bottom_left_child)
2848             gtk_xpaned_set_last_bottom_left_child_focus (xpaned, last_focus);
2849           else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2850             gtk_xpaned_set_last_bottom_right_child_focus (xpaned, last_focus);
2851         }
2852     }
2853
2854   if (parent_class->set_focus_child)
2855     (*parent_class->set_focus_child) (container, focus_child);
2856 }
2857
2858 static void
2859 gtk_xpaned_get_cycle_chain (GtkXPaned * xpaned,
2860                             GtkDirectionType direction, GList ** widgets)
2861 {
2862   GtkContainer *container = GTK_CONTAINER (xpaned);
2863   GtkWidget *ancestor = NULL;
2864   GList *temp_list = NULL;
2865   GList *list;
2866
2867   if (xpaned->in_recursion)
2868     return;
2869
2870   g_assert (widgets != NULL);
2871
2872   if (xpaned->last_top_left_child_focus &&
2873       !gtk_widget_is_ancestor (xpaned->last_top_left_child_focus,
2874                                GTK_WIDGET (xpaned)))
2875     {
2876       gtk_xpaned_set_last_top_left_child_focus (xpaned, NULL);
2877     }
2878
2879   if (xpaned->last_top_right_child_focus &&
2880       !gtk_widget_is_ancestor (xpaned->last_top_right_child_focus,
2881                                GTK_WIDGET (xpaned)))
2882     {
2883       gtk_xpaned_set_last_top_right_child_focus (xpaned, NULL);
2884     }
2885
2886   if (xpaned->last_bottom_left_child_focus &&
2887       !gtk_widget_is_ancestor (xpaned->last_bottom_left_child_focus,
2888                                GTK_WIDGET (xpaned)))
2889     {
2890       gtk_xpaned_set_last_bottom_left_child_focus (xpaned, NULL);
2891     }
2892
2893   if (xpaned->last_bottom_right_child_focus &&
2894       !gtk_widget_is_ancestor (xpaned->last_bottom_right_child_focus,
2895                                GTK_WIDGET (xpaned)))
2896     {
2897       gtk_xpaned_set_last_bottom_right_child_focus (xpaned, NULL);
2898     }
2899
2900   if (gtk_widget_get_parent (GTK_WIDGET (xpaned)))
2901     ancestor = gtk_widget_get_ancestor (gtk_widget_get_parent (GTK_WIDGET (xpaned)),
2902                                         GTK_TYPE_XPANED);
2903
2904   /* The idea here is that temp_list is a list of widgets we want to cycle
2905    * to. The list is prioritized so that the first element is our first
2906    * choice, the next our second, and so on.
2907    *
2908    * We can't just use g_list_reverse(), because we want to try
2909    * paned->last_child?_focus before paned->child?, both when we
2910    * are going forward and backward.
2911    */
2912   if (direction == GTK_DIR_TAB_FORWARD)
2913     {
2914       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2915         {
2916           temp_list =
2917             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2918           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2919           temp_list = g_list_append (temp_list, ancestor);
2920         }
2921       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2922         {
2923           temp_list = g_list_append (temp_list, ancestor);
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         }
2928       else if (gtk_container_get_focus_child (container) == xpaned->bottom_left_child)
2929         {
2930           temp_list = g_list_append (temp_list, ancestor);
2931           temp_list =
2932             g_list_append (temp_list, xpaned->last_bottom_right_child_focus);
2933           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2934         }
2935       else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2936         {
2937           temp_list = g_list_append (temp_list, ancestor);
2938           temp_list =
2939             g_list_append (temp_list, xpaned->last_top_left_child_focus);
2940           temp_list = g_list_append (temp_list, xpaned->top_left_child);
2941         }
2942       else
2943         {
2944           temp_list =
2945             g_list_append (temp_list, xpaned->last_top_left_child_focus);
2946           temp_list = g_list_append (temp_list, xpaned->top_left_child);
2947           temp_list =
2948             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2949           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2950           temp_list =
2951             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2952           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2953           temp_list =
2954             g_list_append (temp_list, xpaned->last_bottom_right_child_focus);
2955           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2956           temp_list = g_list_append (temp_list, ancestor);
2957         }
2958     }
2959   else
2960     {
2961       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
2962         {
2963           temp_list = g_list_append (temp_list, ancestor);
2964           temp_list =
2965             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2966           temp_list = g_list_append (temp_list, xpaned->top_right_child);
2967         }
2968       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2969         {
2970           temp_list =
2971             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2972           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2973           temp_list = g_list_append (temp_list, ancestor);
2974         }
2975       else if (gtk_container_get_focus_child (container) == xpaned->bottom_right_child)
2976         {
2977           temp_list =
2978             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2979           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2980           temp_list = g_list_append (temp_list, ancestor);
2981         }
2982       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
2983         {
2984           temp_list =
2985             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2986           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2987           temp_list = g_list_append (temp_list, ancestor);
2988         }
2989       else
2990         {
2991           temp_list =
2992             g_list_append (temp_list, xpaned->last_bottom_right_child_focus);
2993           temp_list = g_list_append (temp_list, xpaned->bottom_right_child);
2994           temp_list =
2995             g_list_append (temp_list, xpaned->last_bottom_left_child_focus);
2996           temp_list = g_list_append (temp_list, xpaned->bottom_left_child);
2997           temp_list =
2998             g_list_append (temp_list, xpaned->last_top_right_child_focus);
2999           temp_list = g_list_append (temp_list, xpaned->top_right_child);
3000           temp_list =
3001             g_list_append (temp_list, xpaned->last_top_left_child_focus);
3002           temp_list = g_list_append (temp_list, xpaned->top_left_child);
3003           temp_list = g_list_append (temp_list, ancestor);
3004         }
3005     }
3006
3007   /* Walk the list and expand all the paned widgets. */
3008   for (list = temp_list; list != NULL; list = list->next)
3009     {
3010       GtkWidget *widget = list->data;
3011
3012       if (widget)
3013         {
3014           if (GTK_IS_XPANED (widget))
3015             {
3016               xpaned->in_recursion = TRUE;
3017               gtk_xpaned_get_cycle_chain (GTK_XPANED (widget),
3018                                           direction, widgets);
3019               xpaned->in_recursion = FALSE;
3020             }
3021           else
3022             {
3023               *widgets = g_list_append (*widgets, widget);
3024             }
3025         }
3026     }
3027
3028   g_list_free (temp_list);
3029 }
3030
3031 static gboolean
3032 gtk_xpaned_cycle_child_focus (GtkXPaned * xpaned, gboolean reversed)
3033 {
3034   GList *cycle_chain = NULL;
3035   GList *list;
3036
3037   GtkDirectionType direction =
3038     reversed ? GTK_DIR_TAB_BACKWARD : GTK_DIR_TAB_FORWARD;
3039
3040   /* ignore f6 if the handle is focused */
3041   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3042     return TRUE;
3043
3044   /* we can't just let the event propagate up the hierarchy,
3045    * because the paned will want to cycle focus _unless_ an
3046    * ancestor paned handles the event
3047    */
3048   gtk_xpaned_get_cycle_chain (xpaned, direction, &cycle_chain);
3049
3050   for (list = cycle_chain; list != NULL; list = list->next)
3051     if (gtk_widget_child_focus (GTK_WIDGET (list->data), direction))
3052       break;
3053
3054   g_list_free (cycle_chain);
3055
3056   return TRUE;
3057 }
3058
3059 static void
3060 get_child_xpanes (GtkWidget * widget, GList ** xpanes)
3061 {
3062   if (GTK_IS_XPANED (widget))
3063     {
3064       GtkXPaned *xpaned = GTK_XPANED (widget);
3065
3066       get_child_xpanes (xpaned->top_left_child, xpanes);
3067       *xpanes = g_list_prepend (*xpanes, widget);
3068       get_child_xpanes (xpaned->top_right_child, xpanes);
3069       *xpanes = g_list_prepend (*xpanes, widget);
3070       get_child_xpanes (xpaned->bottom_left_child, xpanes);
3071       *xpanes = g_list_prepend (*xpanes, widget);
3072       get_child_xpanes (xpaned->bottom_right_child, xpanes);
3073     }
3074   else if (GTK_IS_CONTAINER (widget))
3075     {
3076       gtk_container_foreach (GTK_CONTAINER (widget),
3077                              (GtkCallback) get_child_xpanes, xpanes);
3078     }
3079 }
3080
3081 static GList *
3082 get_all_xpanes (GtkXPaned * xpaned)
3083 {
3084   GtkXPaned *topmost = NULL;
3085   GList *result = NULL;
3086   GtkWidget *w;
3087
3088   for (w = GTK_WIDGET (xpaned); w != NULL; w = gtk_widget_get_parent (w))
3089     {
3090       if (GTK_IS_XPANED (w))
3091         topmost = GTK_XPANED (w);
3092     }
3093
3094   g_assert (topmost);
3095
3096   get_child_xpanes (GTK_WIDGET (topmost), &result);
3097
3098   return g_list_reverse (result);
3099 }
3100
3101 static void
3102 gtk_xpaned_find_neighbours (GtkXPaned * xpaned,
3103                             GtkXPaned ** next, GtkXPaned ** prev)
3104 {
3105   GList *all_xpanes;
3106   GList *this_link;
3107
3108   all_xpanes = get_all_xpanes (xpaned);
3109   g_assert (all_xpanes);
3110
3111   this_link = g_list_find (all_xpanes, xpaned);
3112
3113   g_assert (this_link);
3114
3115   if (this_link->next)
3116     *next = this_link->next->data;
3117   else
3118     *next = all_xpanes->data;
3119
3120   if (this_link->prev)
3121     *prev = this_link->prev->data;
3122   else
3123     *prev = g_list_last (all_xpanes)->data;
3124
3125   g_list_free (all_xpanes);
3126 }
3127
3128 static gboolean
3129 gtk_xpaned_move_handle (GtkXPaned * xpaned, GtkScrollType scroll)
3130 {
3131   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3132     {
3133       GdkPoint old_position;
3134       GdkPoint new_position;
3135       gint increment;
3136
3137       enum
3138       {
3139         SINGLE_STEP_SIZE = 1,
3140         PAGE_STEP_SIZE = 75
3141       };
3142
3143       new_position.x = old_position.x = gtk_xpaned_get_position_x (xpaned);
3144       new_position.y = old_position.y = gtk_xpaned_get_position_y (xpaned);
3145       increment = 0;
3146
3147       switch (scroll)
3148         {
3149         case GTK_SCROLL_STEP_LEFT:
3150         case GTK_SCROLL_STEP_UP:
3151         case GTK_SCROLL_STEP_BACKWARD:
3152           increment = -SINGLE_STEP_SIZE;
3153           break;
3154
3155         case GTK_SCROLL_STEP_RIGHT:
3156         case GTK_SCROLL_STEP_DOWN:
3157         case GTK_SCROLL_STEP_FORWARD:
3158           increment = SINGLE_STEP_SIZE;
3159           break;
3160
3161         case GTK_SCROLL_PAGE_LEFT:
3162         case GTK_SCROLL_PAGE_UP:
3163         case GTK_SCROLL_PAGE_BACKWARD:
3164           increment = -PAGE_STEP_SIZE;
3165           break;
3166
3167         case GTK_SCROLL_PAGE_RIGHT:
3168         case GTK_SCROLL_PAGE_DOWN:
3169         case GTK_SCROLL_PAGE_FORWARD:
3170           increment = PAGE_STEP_SIZE;
3171           break;
3172
3173         case GTK_SCROLL_START:
3174           new_position.x = xpaned->min_position.x;
3175           new_position.y = xpaned->min_position.y;
3176           break;
3177
3178         case GTK_SCROLL_END:
3179           new_position.x = xpaned->max_position.x;
3180           new_position.y = xpaned->max_position.y;
3181           break;
3182
3183         default:
3184           break;
3185         }
3186
3187       if (increment)
3188         {
3189           if (is_rtl (xpaned))
3190             increment = -increment;
3191
3192           new_position.x = old_position.x + increment;
3193           new_position.y = old_position.y + increment;
3194         }
3195
3196       new_position.x = CLAMP (new_position.x,
3197                               xpaned->min_position.x, xpaned->max_position.x);
3198
3199       new_position.y = CLAMP (new_position.y,
3200                               xpaned->min_position.y, xpaned->max_position.y);
3201
3202       if (old_position.x != new_position.x)
3203         gtk_xpaned_set_position_x (xpaned, new_position.x);
3204
3205       if (old_position.y != new_position.y)
3206         gtk_xpaned_set_position_y (xpaned, new_position.y);
3207
3208       return TRUE;
3209     }
3210
3211   return FALSE;
3212 }
3213
3214 static void
3215 gtk_xpaned_restore_focus (GtkXPaned * xpaned)
3216 {
3217   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3218     {
3219       if (xpaned->priv->saved_focus &&
3220           gtk_widget_get_sensitive (xpaned->priv->saved_focus))
3221         {
3222           gtk_widget_grab_focus (xpaned->priv->saved_focus);
3223         }
3224       else
3225         {
3226           /* the saved focus is somehow not available for focusing,
3227            * try
3228            *   1) tabbing into the paned widget
3229            * if that didn't work,
3230            *   2) unset focus for the window if there is one
3231            */
3232
3233           if (!gtk_widget_child_focus
3234               (GTK_WIDGET (xpaned), GTK_DIR_TAB_FORWARD))
3235             {
3236               GtkWidget *toplevel =
3237                 gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
3238
3239               if (GTK_IS_WINDOW (toplevel))
3240                 gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
3241             }
3242         }
3243
3244       gtk_xpaned_set_saved_focus (xpaned, NULL);
3245       gtk_xpaned_set_first_xpaned (xpaned, NULL);
3246     }
3247 }
3248
3249 static gboolean
3250 gtk_xpaned_accept_position (GtkXPaned * xpaned)
3251 {
3252   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3253     {
3254       xpaned->original_position.x = -1;
3255       xpaned->original_position.y = -1;
3256       gtk_xpaned_restore_focus (xpaned);
3257
3258       return TRUE;
3259     }
3260
3261   return FALSE;
3262 }
3263
3264 static gboolean
3265 gtk_xpaned_cancel_position (GtkXPaned * xpaned)
3266 {
3267   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3268     {
3269       if (xpaned->original_position.x != -1)
3270         {
3271           gtk_xpaned_set_position_x (xpaned, xpaned->original_position.x);
3272           xpaned->original_position.x = -1;
3273         }
3274
3275       if (xpaned->original_position.y != -1)
3276         {
3277           gtk_xpaned_set_position_y (xpaned, xpaned->original_position.y);
3278           xpaned->original_position.y = -1;
3279         }
3280
3281       gtk_xpaned_restore_focus (xpaned);
3282       return TRUE;
3283     }
3284
3285   return FALSE;
3286 }
3287
3288 static gboolean
3289 gtk_xpaned_cycle_handle_focus (GtkXPaned * xpaned, gboolean reversed)
3290 {
3291   GtkXPaned *next;
3292   GtkXPaned *prev;
3293
3294   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3295     {
3296       GtkXPaned *focus = NULL;
3297
3298       if (!xpaned->priv->first_xpaned)
3299         {
3300           /* The first_pane has disappeared. As an ad-hoc solution,
3301            * we make the currently focused paned the first_paned. To the
3302            * user this will seem like the paned cycling has been reset.
3303            */
3304           gtk_xpaned_set_first_xpaned (xpaned, xpaned);
3305         }
3306
3307       gtk_xpaned_find_neighbours (xpaned, &next, &prev);
3308
3309       if (reversed && prev &&
3310           prev != xpaned && xpaned != xpaned->priv->first_xpaned)
3311         {
3312           focus = prev;
3313         }
3314       else if (!reversed &&
3315                next && next != xpaned && next != xpaned->priv->first_xpaned)
3316         {
3317           focus = next;
3318         }
3319       else
3320         {
3321           gtk_xpaned_accept_position (xpaned);
3322           return TRUE;
3323         }
3324
3325       g_assert (focus);
3326
3327       gtk_xpaned_set_saved_focus (focus, xpaned->priv->saved_focus);
3328       gtk_xpaned_set_first_xpaned (focus, xpaned->priv->first_xpaned);
3329
3330       gtk_xpaned_set_saved_focus (xpaned, NULL);
3331       gtk_xpaned_set_first_xpaned (xpaned, NULL);
3332
3333       gtk_widget_grab_focus (GTK_WIDGET (focus));
3334
3335       if (!gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3336         {
3337           xpaned->original_position.x = -1;
3338           xpaned->original_position.y = -1;
3339           focus->original_position.x = gtk_xpaned_get_position_x (focus);
3340           focus->original_position.y = gtk_xpaned_get_position_y (focus);
3341         }
3342     }
3343   else
3344     {
3345       GtkContainer *container = GTK_CONTAINER (xpaned);
3346       GtkXPaned *focus;
3347       GtkXPaned *first;
3348       GtkXPaned *prev;
3349       GtkXPaned *next;
3350       GtkWidget *toplevel;
3351
3352       gtk_xpaned_find_neighbours (xpaned, &next, &prev);
3353
3354       if (gtk_container_get_focus_child (container) == xpaned->top_left_child)
3355         {
3356           if (reversed)
3357             {
3358               focus = prev;
3359               first = xpaned;
3360             }
3361           else
3362             {
3363               focus = xpaned;
3364               first = xpaned;
3365             }
3366         }
3367       else if (gtk_container_get_focus_child (container) == xpaned->top_right_child)
3368         {
3369           if (reversed)
3370             {
3371               focus = xpaned;
3372               first = next;
3373             }
3374           else
3375             {
3376               focus = next;
3377               first = next;
3378             }
3379         }
3380       else
3381         {
3382           /* Focus is not inside this xpaned, and we don't have focus.
3383            * Presumably this happened because the application wants us
3384            * to start keyboard navigating.
3385            */
3386           focus = xpaned;
3387
3388           if (reversed)
3389             first = xpaned;
3390           else
3391             first = next;
3392         }
3393
3394       toplevel = gtk_widget_get_toplevel (GTK_WIDGET (xpaned));
3395
3396       if (GTK_IS_WINDOW (toplevel))
3397         gtk_xpaned_set_saved_focus (focus,
3398                                     gtk_window_get_focus (GTK_WINDOW (toplevel)));
3399       gtk_xpaned_set_first_xpaned (focus, first);
3400       focus->original_position.x = gtk_xpaned_get_position_x (focus);
3401       focus->original_position.y = gtk_xpaned_get_position_y (focus);
3402
3403       gtk_widget_grab_focus (GTK_WIDGET (focus));
3404     }
3405
3406   return TRUE;
3407 }
3408
3409 static gboolean
3410 gtk_xpaned_toggle_handle_focus (GtkXPaned * xpaned)
3411 {
3412   /* This function/signal has the wrong name. It is called when you
3413    * press Tab or Shift-Tab and what we do is act as if
3414    * the user pressed Return and then Tab or Shift-Tab
3415    */
3416   if (gtk_widget_is_focus (GTK_WIDGET (xpaned)))
3417     gtk_xpaned_accept_position (xpaned);
3418
3419   return FALSE;
3420 }
3421
3422 /*#define __GTK_XPANED_C__*/
3423 /*#include "gtkaliasdef.c"*/