Pileus Git - ~andy/gtk/blob - gtk/gtktreeviewcolumn.c

   1 /* gtktreeviewcolumn.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include "gtktreeviewcolumn.h"
  23
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtktreeprivate.h"
  28 #include "gtkcelllayout.h"
  29 #include "gtkbutton.h"
  30 #include "gtkalignment.h"
  31 #include "gtklabel.h"
  32 #include "gtkhbox.h"
  33 #include "gtkmarshalers.h"
  34 #include "gtkarrow.h"
  35 #include "gtkcellareacontext.h"
  36 #include "gtkcellareabox.h"
  37 #include "gtkprivate.h"
  38 #include "gtkintl.h"
  39
  40
  41 /**
  42  * SECTION:gtktreeviewcolumn
  43  * @Short_description: A visible column in a GtkTreeView widget
  44  * @Title: GtkTreeViewColumn
  45  * @See_also: #GtkTreeView, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode, #GtkTreeSortable,
  46  *   #GtkTreeModelSort, #GtkListStore, #GtkTreeStore, #GtkCellRenderer, #GtkCellEditable,
  47  *   #GtkCellRendererPixbuf, #GtkCellRendererText, #GtkCellRendererToggle
  48  *
  49  * The GtkTreeViewColumn object represents a visible column in a #GtkTreeView widget.
  50  * It allows to set properties of the column header, and functions as a holding pen for
  51  * the cell renderers which determine how the data in the column is displayed.
  52  *
  53  * Please refer to the <link linkend="TreeWidget">tree widget conceptual overview</link>
  54  * for an overview of all the objects and data types related to the tree widget and how
  55  * they work together.
  56  */
  57
  58
  59 enum
  60 {
  61   PROP_0,
  62   PROP_VISIBLE,
  63   PROP_RESIZABLE,
  64   PROP_WIDTH,
  65   PROP_SPACING,
  66   PROP_SIZING,
  67   PROP_FIXED_WIDTH,
  68   PROP_MIN_WIDTH,
  69   PROP_MAX_WIDTH,
  70   PROP_TITLE,
  71   PROP_EXPAND,
  72   PROP_CLICKABLE,
  73   PROP_WIDGET,
  74   PROP_ALIGNMENT,
  75   PROP_REORDERABLE,
  76   PROP_SORT_INDICATOR,
  77   PROP_SORT_ORDER,
  78   PROP_SORT_COLUMN_ID
  79 };
  80
  81 enum
  82 {
  83   CLICKED,
  84   LAST_SIGNAL
  85 };
  86
  87 /* Type methods */
  88 static void gtk_tree_view_column_cell_layout_init              (GtkCellLayoutIface      *iface);
  89
  90 /* GObject methods */
  91 static void gtk_tree_view_column_set_property                  (GObject                 *object,
  92                                                                 guint                    prop_id,
  93                                                                 const GValue            *value,
  94                                                                 GParamSpec              *pspec);
  95 static void gtk_tree_view_column_get_property                  (GObject                 *object,
  96                                                                 guint                    prop_id,
  97                                                                 GValue                  *value,
  98                                                                 GParamSpec              *pspec);
  99 static void gtk_tree_view_column_finalize                      (GObject                 *object);
 100 static void gtk_tree_view_column_dispose                       (GObject                 *object);
 101
 102 /* GtkCellLayout implementation */
 103 static GtkCellArea *gtk_tree_view_column_cell_layout_get_area  (GtkCellLayout           *cell_layout);
 104
 105 /* Button handling code */
 106 static void gtk_tree_view_column_create_button                 (GtkTreeViewColumn       *tree_column);
 107 static void gtk_tree_view_column_update_button                 (GtkTreeViewColumn       *tree_column);
 108
 109 /* Button signal handlers */
 110 static gint gtk_tree_view_column_button_event                  (GtkWidget               *widget,
 111                                                                 GdkEvent                *event,
 112                                                                 gpointer                 data);
 113 static void gtk_tree_view_column_button_clicked                (GtkWidget               *widget,
 114                                                                 gpointer                 data);
 115 static gboolean gtk_tree_view_column_mnemonic_activate         (GtkWidget *widget,
 116                                                                 gboolean   group_cycling,
 117                                                                 gpointer   data);
 118
 119 /* Property handlers */
 120 static void gtk_tree_view_model_sort_column_changed            (GtkTreeSortable         *sortable,
 121                                                                 GtkTreeViewColumn       *tree_column);
 122
 123 /* GtkCellArea/GtkCellAreaContext callbacks */
 124 static void gtk_tree_view_column_context_changed               (GtkCellAreaContext      *context,
 125                                                                 GParamSpec              *pspec,
 126                                                                 GtkTreeViewColumn       *tree_column);
 127 static void gtk_tree_view_column_add_editable_callback         (GtkCellArea             *area,
 128                                                                 GtkCellRenderer         *renderer,
 129                                                                 GtkCellEditable         *edit_widget,
 130                                                                 GdkRectangle            *cell_area,
 131                                                                 const gchar             *path_string,
 132                                                                 gpointer                 user_data);
 133 static void gtk_tree_view_column_remove_editable_callback      (GtkCellArea             *area,
 134                                                                 GtkCellRenderer         *renderer,
 135                                                                 GtkCellEditable         *edit_widget,
 136                                                                 gpointer                 user_data);
 137
 138 /* Internal functions */
 139 static void gtk_tree_view_column_sort                          (GtkTreeViewColumn       *tree_column,
 140                                                                 gpointer                 data);
 141 static void gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn       *tree_column);
 142 static void gtk_tree_view_column_set_attributesv               (GtkTreeViewColumn       *tree_column,
 143                                                                 GtkCellRenderer         *cell_renderer,
 144                                                                 va_list                  args);
 145
 146 /* GtkBuildable implementation */
 147 static void gtk_tree_view_column_buildable_init                 (GtkBuildableIface     *iface);
 148
 149 static guint tree_column_signals[LAST_SIGNAL] = { 0 };
 150
 151 G_DEFINE_TYPE_WITH_CODE (GtkTreeViewColumn, gtk_tree_view_column, G_TYPE_INITIALLY_UNOWNED,
 152                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 153                                                 gtk_tree_view_column_cell_layout_init)
 154                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 155                                                 gtk_tree_view_column_buildable_init))
 156
 157
 158 static void
 159 gtk_tree_view_column_class_init (GtkTreeViewColumnClass *class)
 160 {
 161   GObjectClass *object_class;
 162
 163   object_class = (GObjectClass*) class;
 164
 165   class->clicked = NULL;
 166
 167   object_class->finalize = gtk_tree_view_column_finalize;
 168   object_class->dispose = gtk_tree_view_column_dispose;
 169   object_class->set_property = gtk_tree_view_column_set_property;
 170   object_class->get_property = gtk_tree_view_column_get_property;
 171
 172   tree_column_signals[CLICKED] =
 173     g_signal_new (I_("clicked"),
 174                   G_OBJECT_CLASS_TYPE (object_class),
 175                   G_SIGNAL_RUN_LAST,
 176                   G_STRUCT_OFFSET (GtkTreeViewColumnClass, clicked),
 177                   NULL, NULL,
 178                   _gtk_marshal_VOID__VOID,
 179                   G_TYPE_NONE, 0);
 180
 181   g_object_class_install_property (object_class,
 182                                    PROP_VISIBLE,
 183                                    g_param_spec_boolean ("visible",
 184                                                         P_("Visible"),
 185                                                         P_("Whether to display the column"),
 186                                                          TRUE,
 187                                                          GTK_PARAM_READWRITE));
 188
 189   g_object_class_install_property (object_class,
 190                                    PROP_RESIZABLE,
 191                                    g_param_spec_boolean ("resizable",
 192                                                          P_("Resizable"),
 193                                                          P_("Column is user-resizable"),
 194                                                          FALSE,
 195                                                          GTK_PARAM_READWRITE));
 196
 197   g_object_class_install_property (object_class,
 198                                    PROP_WIDTH,
 199                                    g_param_spec_int ("width",
 200                                                      P_("Width"),
 201                                                      P_("Current width of the column"),
 202                                                      0,
 203                                                      G_MAXINT,
 204                                                      0,
 205                                                      GTK_PARAM_READABLE));
 206   g_object_class_install_property (object_class,
 207                                    PROP_SPACING,
 208                                    g_param_spec_int ("spacing",
 209                                                      P_("Spacing"),
 210                                                      P_("Space which is inserted between cells"),
 211                                                      0,
 212                                                      G_MAXINT,
 213                                                      0,
 214                                                      GTK_PARAM_READWRITE));
 215   g_object_class_install_property (object_class,
 216                                    PROP_SIZING,
 217                                    g_param_spec_enum ("sizing",
 218                                                       P_("Sizing"),
 219                                                       P_("Resize mode of the column"),
 220                                                       GTK_TYPE_TREE_VIEW_COLUMN_SIZING,
 221                                                       GTK_TREE_VIEW_COLUMN_GROW_ONLY,
 222                                                       GTK_PARAM_READWRITE));
 223
 224   g_object_class_install_property (object_class,
 225                                    PROP_FIXED_WIDTH,
 226                                    g_param_spec_int ("fixed-width",
 227                                                      P_("Fixed Width"),
 228                                                      P_("Current fixed width of the column"),
 229                                                      1,
 230                                                      G_MAXINT,
 231                                                      1, /* not useful */
 232                                                      GTK_PARAM_READWRITE));
 233
 234   g_object_class_install_property (object_class,
 235                                    PROP_MIN_WIDTH,
 236                                    g_param_spec_int ("min-width",
 237                                                      P_("Minimum Width"),
 238                                                      P_("Minimum allowed width of the column"),
 239                                                      -1,
 240                                                      G_MAXINT,
 241                                                      -1,
 242                                                      GTK_PARAM_READWRITE));
 243
 244   g_object_class_install_property (object_class,
 245                                    PROP_MAX_WIDTH,
 246                                    g_param_spec_int ("max-width",
 247                                                      P_("Maximum Width"),
 248                                                      P_("Maximum allowed width of the column"),
 249                                                      -1,
 250                                                      G_MAXINT,
 251                                                      -1,
 252                                                      GTK_PARAM_READWRITE));
 253
 254   g_object_class_install_property (object_class,
 255                                    PROP_TITLE,
 256                                    g_param_spec_string ("title",
 257                                                         P_("Title"),
 258                                                         P_("Title to appear in column header"),
 259                                                         "",
 260                                                         GTK_PARAM_READWRITE));
 261
 262   g_object_class_install_property (object_class,
 263                                    PROP_EXPAND,
 264                                    g_param_spec_boolean ("expand",
 265                                                          P_("Expand"),
 266                                                          P_("Column gets share of extra width allocated to the widget"),
 267                                                          FALSE,
 268                                                          GTK_PARAM_READWRITE));
 269
 270   g_object_class_install_property (object_class,
 271                                    PROP_CLICKABLE,
 272                                    g_param_spec_boolean ("clickable",
 273                                                         P_("Clickable"),
 274                                                         P_("Whether the header can be clicked"),
 275                                                          FALSE,
 276                                                          GTK_PARAM_READWRITE));
 277
 278
 279   g_object_class_install_property (object_class,
 280                                    PROP_WIDGET,
 281                                    g_param_spec_object ("widget",
 282                                                         P_("Widget"),
 283                                                         P_("Widget to put in column header button instead of column title"),
 284                                                         GTK_TYPE_WIDGET,
 285                                                         GTK_PARAM_READWRITE));
 286
 287   g_object_class_install_property (object_class,
 288                                    PROP_ALIGNMENT,
 289                                    g_param_spec_float ("alignment",
 290                                                        P_("Alignment"),
 291                                                        P_("X Alignment of the column header text or widget"),
 292                                                        0.0,
 293                                                        1.0,
 294                                                        0.0,
 295                                                        GTK_PARAM_READWRITE));
 296
 297   g_object_class_install_property (object_class,
 298                                    PROP_REORDERABLE,
 299                                    g_param_spec_boolean ("reorderable",
 300                                                          P_("Reorderable"),
 301                                                          P_("Whether the column can be reordered around the headers"),
 302                                                          FALSE,
 303                                                          GTK_PARAM_READWRITE));
 304
 305   g_object_class_install_property (object_class,
 306                                    PROP_SORT_INDICATOR,
 307                                    g_param_spec_boolean ("sort-indicator",
 308                                                         P_("Sort indicator"),
 309                                                         P_("Whether to show a sort indicator"),
 310                                                          FALSE,
 311                                                          GTK_PARAM_READWRITE));
 312
 313   g_object_class_install_property (object_class,
 314                                    PROP_SORT_ORDER,
 315                                    g_param_spec_enum ("sort-order",
 316                                                       P_("Sort order"),
 317                                                       P_("Sort direction the sort indicator should indicate"),
 318                                                       GTK_TYPE_SORT_TYPE,
 319                                                       GTK_SORT_ASCENDING,
 320                                                       GTK_PARAM_READWRITE));
 321
 322   /**
 323    * GtkTreeViewColumn:sort-column-id:
 324    *
 325    * Logical sort column ID this column sorts on when selected for sorting. Setting the sort column ID makes the column header
 326    * clickable. Set to %-1 to make the column unsortable.
 327    *
 328    * Since: 2.18
 329    **/
 330   g_object_class_install_property (object_class,
 331                                    PROP_SORT_COLUMN_ID,
 332                                    g_param_spec_int ("sort-column-id",
 333                                                      P_("Sort column ID"),
 334                                                      P_("Logical sort column ID this column sorts on when selected for sorting"),
 335                                                      -1,
 336                                                      G_MAXINT,
 337                                                      -1,
 338                                                      GTK_PARAM_READWRITE));
 339 }
 340
 341 static void
 342 gtk_tree_view_column_buildable_init (GtkBuildableIface *iface)
 343 {
 344   iface->add_child = _gtk_cell_layout_buildable_add_child;
 345   iface->custom_tag_start = _gtk_cell_layout_buildable_custom_tag_start;
 346   iface->custom_tag_end = _gtk_cell_layout_buildable_custom_tag_end;
 347 }
 348
 349 static void
 350 gtk_tree_view_column_cell_layout_init (GtkCellLayoutIface *iface)
 351 {
 352   iface->get_area = gtk_tree_view_column_cell_layout_get_area;
 353 }
 354
 355 static void
 356 gtk_tree_view_column_init (GtkTreeViewColumn *tree_column)
 357 {
 358   tree_column->button = NULL;
 359   tree_column->xalign = 0.0;
 360   tree_column->width = 0;
 361   tree_column->requested_width = -1;
 362   tree_column->min_width = -1;
 363   tree_column->max_width = -1;
 364   tree_column->resized_width = 0;
 365   tree_column->column_type = GTK_TREE_VIEW_COLUMN_GROW_ONLY;
 366   tree_column->visible = TRUE;
 367   tree_column->resizable = FALSE;
 368   tree_column->expand = FALSE;
 369   tree_column->clickable = FALSE;
 370   tree_column->dirty = TRUE;
 371   tree_column->sort_order = GTK_SORT_ASCENDING;
 372   tree_column->show_sort_indicator = FALSE;
 373   tree_column->property_changed_signal = 0;
 374   tree_column->sort_clicked_signal = 0;
 375   tree_column->sort_column_changed_signal = 0;
 376   tree_column->sort_column_id = -1;
 377   tree_column->reorderable = FALSE;
 378   tree_column->maybe_reordered = FALSE;
 379   tree_column->fixed_width = 1;
 380   tree_column->use_resized_width = FALSE;
 381   tree_column->title = g_strdup ("");
 382
 383   tree_column->cell_area = gtk_cell_area_box_new ();
 384   gtk_cell_area_set_style_detail (tree_column->cell_area, "treeview");
 385   tree_column->cell_area_context = gtk_cell_area_create_context (tree_column->cell_area);
 386
 387   tree_column->context_changed_signal =
 388     g_signal_connect (tree_column->cell_area_context, "notify",
 389                       G_CALLBACK (gtk_tree_view_column_context_changed), tree_column);
 390
 391 }
 392
 393 static void
 394 gtk_tree_view_column_dispose (GObject *object)
 395 {
 396   GtkTreeViewColumn *tree_column = (GtkTreeViewColumn *) object;
 397
 398   if (tree_column->cell_area_context)
 399     {
 400       g_object_unref (tree_column->cell_area_context);
 401
 402       g_signal_handler_disconnect (tree_column->cell_area_context,
 403                                    tree_column->context_changed_signal);
 404       tree_column->context_changed_signal = 0;
 405     }
 406
 407   if (tree_column->cell_area)
 408     {
 409       g_object_unref (tree_column->cell_area);
 410     }
 411
 412   if (tree_column->child)
 413     {
 414       g_object_unref (tree_column->child);
 415       tree_column->child = NULL;
 416     }
 417
 418   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->dispose (object);
 419 }
 420
 421 static void
 422 gtk_tree_view_column_finalize (GObject *object)
 423 {
 424   GtkTreeViewColumn *tree_column = (GtkTreeViewColumn *) object;
 425
 426   g_free (tree_column->title);
 427
 428   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->finalize (object);
 429 }
 430
 431 static void
 432 gtk_tree_view_column_set_property (GObject         *object,
 433                                    guint            prop_id,
 434                                    const GValue    *value,
 435                                    GParamSpec      *pspec)
 436 {
 437   GtkTreeViewColumn *tree_column;
 438
 439   tree_column = GTK_TREE_VIEW_COLUMN (object);
 440
 441   switch (prop_id)
 442     {
 443     case PROP_VISIBLE:
 444       gtk_tree_view_column_set_visible (tree_column,
 445                                         g_value_get_boolean (value));
 446       break;
 447
 448     case PROP_RESIZABLE:
 449       gtk_tree_view_column_set_resizable (tree_column,
 450                                           g_value_get_boolean (value));
 451       break;
 452
 453     case PROP_SIZING:
 454       gtk_tree_view_column_set_sizing (tree_column,
 455                                        g_value_get_enum (value));
 456       break;
 457
 458     case PROP_FIXED_WIDTH:
 459       gtk_tree_view_column_set_fixed_width (tree_column,
 460                                             g_value_get_int (value));
 461       break;
 462
 463     case PROP_MIN_WIDTH:
 464       gtk_tree_view_column_set_min_width (tree_column,
 465                                           g_value_get_int (value));
 466       break;
 467
 468     case PROP_MAX_WIDTH:
 469       gtk_tree_view_column_set_max_width (tree_column,
 470                                           g_value_get_int (value));
 471       break;
 472
 473     case PROP_SPACING:
 474       gtk_tree_view_column_set_spacing (tree_column,
 475                                         g_value_get_int (value));
 476       break;
 477
 478     case PROP_TITLE:
 479       gtk_tree_view_column_set_title (tree_column,
 480                                       g_value_get_string (value));
 481       break;
 482
 483     case PROP_EXPAND:
 484       gtk_tree_view_column_set_expand (tree_column,
 485                                        g_value_get_boolean (value));
 486       break;
 487
 488     case PROP_CLICKABLE:
 489       gtk_tree_view_column_set_clickable (tree_column,
 490                                           g_value_get_boolean (value));
 491       break;
 492
 493     case PROP_WIDGET:
 494       gtk_tree_view_column_set_widget (tree_column,
 495                                        (GtkWidget*) g_value_get_object (value));
 496       break;
 497
 498     case PROP_ALIGNMENT:
 499       gtk_tree_view_column_set_alignment (tree_column,
 500                                           g_value_get_float (value));
 501       break;
 502
 503     case PROP_REORDERABLE:
 504       gtk_tree_view_column_set_reorderable (tree_column,
 505                                             g_value_get_boolean (value));
 506       break;
 507
 508     case PROP_SORT_INDICATOR:
 509       gtk_tree_view_column_set_sort_indicator (tree_column,
 510                                                g_value_get_boolean (value));
 511       break;
 512
 513     case PROP_SORT_ORDER:
 514       gtk_tree_view_column_set_sort_order (tree_column,
 515                                            g_value_get_enum (value));
 516       break;
 517
 518     case PROP_SORT_COLUMN_ID:
 519       gtk_tree_view_column_set_sort_column_id (tree_column,
 520                                                g_value_get_int (value));
 521       break;
 522
 523     default:
 524       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 525       break;
 526     }
 527 }
 528
 529 static void
 530 gtk_tree_view_column_get_property (GObject         *object,
 531                                    guint            prop_id,
 532                                    GValue          *value,
 533                                    GParamSpec      *pspec)
 534 {
 535   GtkTreeViewColumn *tree_column;
 536
 537   tree_column = GTK_TREE_VIEW_COLUMN (object);
 538
 539   switch (prop_id)
 540     {
 541     case PROP_VISIBLE:
 542       g_value_set_boolean (value,
 543                            gtk_tree_view_column_get_visible (tree_column));
 544       break;
 545
 546     case PROP_RESIZABLE:
 547       g_value_set_boolean (value,
 548                            gtk_tree_view_column_get_resizable (tree_column));
 549       break;
 550
 551     case PROP_WIDTH:
 552       g_value_set_int (value,
 553                        gtk_tree_view_column_get_width (tree_column));
 554       break;
 555
 556     case PROP_SPACING:
 557       g_value_set_int (value,
 558                        gtk_tree_view_column_get_spacing (tree_column));
 559       break;
 560
 561     case PROP_SIZING:
 562       g_value_set_enum (value,
 563                         gtk_tree_view_column_get_sizing (tree_column));
 564       break;
 565
 566     case PROP_FIXED_WIDTH:
 567       g_value_set_int (value,
 568                        gtk_tree_view_column_get_fixed_width (tree_column));
 569       break;
 570
 571     case PROP_MIN_WIDTH:
 572       g_value_set_int (value,
 573                        gtk_tree_view_column_get_min_width (tree_column));
 574       break;
 575
 576     case PROP_MAX_WIDTH:
 577       g_value_set_int (value,
 578                        gtk_tree_view_column_get_max_width (tree_column));
 579       break;
 580
 581     case PROP_TITLE:
 582       g_value_set_string (value,
 583                           gtk_tree_view_column_get_title (tree_column));
 584       break;
 585
 586     case PROP_EXPAND:
 587       g_value_set_boolean (value,
 588                           gtk_tree_view_column_get_expand (tree_column));
 589       break;
 590
 591     case PROP_CLICKABLE:
 592       g_value_set_boolean (value,
 593                            gtk_tree_view_column_get_clickable (tree_column));
 594       break;
 595
 596     case PROP_WIDGET:
 597       g_value_set_object (value,
 598                           (GObject*) gtk_tree_view_column_get_widget (tree_column));
 599       break;
 600
 601     case PROP_ALIGNMENT:
 602       g_value_set_float (value,
 603                          gtk_tree_view_column_get_alignment (tree_column));
 604       break;
 605
 606     case PROP_REORDERABLE:
 607       g_value_set_boolean (value,
 608                            gtk_tree_view_column_get_reorderable (tree_column));
 609       break;
 610
 611     case PROP_SORT_INDICATOR:
 612       g_value_set_boolean (value,
 613                            gtk_tree_view_column_get_sort_indicator (tree_column));
 614       break;
 615
 616     case PROP_SORT_ORDER:
 617       g_value_set_enum (value,
 618                         gtk_tree_view_column_get_sort_order (tree_column));
 619       break;
 620
 621     case PROP_SORT_COLUMN_ID:
 622       g_value_set_int (value,
 623                        gtk_tree_view_column_get_sort_column_id (tree_column));
 624       break;
 625
 626     default:
 627       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 628       break;
 629     }
 630 }
 631
 632 /* Implementation of GtkCellLayout interface
 633  */
 634 static GtkCellArea *
 635 gtk_tree_view_column_cell_layout_get_area (GtkCellLayout   *cell_layout)
 636 {
 637   GtkTreeViewColumn *column;
 638
 639   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (cell_layout), NULL);
 640   column = GTK_TREE_VIEW_COLUMN (cell_layout);
 641
 642   return column->cell_area;
 643 }
 644
 645 /* Button handling code
 646  */
 647 static void
 648 gtk_tree_view_column_create_button (GtkTreeViewColumn *tree_column)
 649 {
 650   GtkTreeView *tree_view;
 651   GtkWidget *child;
 652   GtkWidget *hbox;
 653
 654   tree_view = (GtkTreeView *) tree_column->tree_view;
 655
 656   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
 657   g_return_if_fail (tree_column->button == NULL);
 658
 659   gtk_widget_push_composite_child ();
 660   tree_column->button = gtk_button_new ();
 661   gtk_widget_add_events (tree_column->button, GDK_POINTER_MOTION_MASK);
 662   gtk_widget_pop_composite_child ();
 663
 664   /* make sure we own a reference to it as well. */
 665   if (tree_view->priv->header_window)
 666     gtk_widget_set_parent_window (tree_column->button, tree_view->priv->header_window);
 667   gtk_widget_set_parent (tree_column->button, GTK_WIDGET (tree_view));
 668
 669   g_signal_connect (tree_column->button, "event",
 670                     G_CALLBACK (gtk_tree_view_column_button_event),
 671                     tree_column);
 672   g_signal_connect (tree_column->button, "clicked",
 673                     G_CALLBACK (gtk_tree_view_column_button_clicked),
 674                     tree_column);
 675
 676   tree_column->alignment = gtk_alignment_new (tree_column->xalign, 0.5, 0.0, 0.0);
 677
 678   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
 679   tree_column->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 680
 681   if (tree_column->child)
 682     child = tree_column->child;
 683   else
 684     {
 685       child = gtk_label_new (tree_column->title);
 686       gtk_widget_show (child);
 687     }
 688
 689   g_signal_connect (child, "mnemonic-activate",
 690                     G_CALLBACK (gtk_tree_view_column_mnemonic_activate),
 691                     tree_column);
 692
 693   if (tree_column->xalign <= 0.5)
 694     gtk_box_pack_end (GTK_BOX (hbox), tree_column->arrow, FALSE, FALSE, 0);
 695   else
 696     gtk_box_pack_start (GTK_BOX (hbox), tree_column->arrow, FALSE, FALSE, 0);
 697
 698   gtk_box_pack_start (GTK_BOX (hbox), tree_column->alignment, TRUE, TRUE, 0);
 699
 700   gtk_container_add (GTK_CONTAINER (tree_column->alignment), child);
 701   gtk_container_add (GTK_CONTAINER (tree_column->button), hbox);
 702
 703   gtk_widget_show (hbox);
 704   gtk_widget_show (tree_column->alignment);
 705   gtk_tree_view_column_update_button (tree_column);
 706 }
 707
 708 static void
 709 gtk_tree_view_column_update_button (GtkTreeViewColumn *tree_column)
 710 {
 711   gint sort_column_id = -1;
 712   GtkWidget *hbox;
 713   GtkWidget *alignment;
 714   GtkWidget *arrow;
 715   GtkWidget *current_child;
 716   GtkArrowType arrow_type = GTK_ARROW_NONE;
 717   GtkTreeModel *model;
 718
 719   if (tree_column->tree_view)
 720     model = gtk_tree_view_get_model (GTK_TREE_VIEW (tree_column->tree_view));
 721   else
 722     model = NULL;
 723
 724   /* Create a button if necessary */
 725   if (tree_column->visible &&
 726       tree_column->button == NULL &&
 727       tree_column->tree_view &&
 728       gtk_widget_get_realized (tree_column->tree_view))
 729     gtk_tree_view_column_create_button (tree_column);
 730
 731   if (! tree_column->button)
 732     return;
 733
 734   hbox = gtk_bin_get_child (GTK_BIN (tree_column->button));
 735   alignment = tree_column->alignment;
 736   arrow = tree_column->arrow;
 737   current_child = gtk_bin_get_child (GTK_BIN (alignment));
 738
 739   /* Set up the actual button */
 740   gtk_alignment_set (GTK_ALIGNMENT (alignment), tree_column->xalign,
 741                      0.5, 0.0, 0.0);
 742
 743   if (tree_column->child)
 744     {
 745       if (current_child != tree_column->child)
 746         {
 747           gtk_container_remove (GTK_CONTAINER (alignment),
 748                                 current_child);
 749           gtk_container_add (GTK_CONTAINER (alignment),
 750                              tree_column->child);
 751         }
 752     }
 753   else
 754     {
 755       if (current_child == NULL)
 756         {
 757           current_child = gtk_label_new (NULL);
 758           gtk_widget_show (current_child);
 759           gtk_container_add (GTK_CONTAINER (alignment),
 760                              current_child);
 761         }
 762
 763       g_return_if_fail (GTK_IS_LABEL (current_child));
 764
 765       if (tree_column->title)
 766         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 767                                           tree_column->title);
 768       else
 769         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 770                                           "");
 771     }
 772
 773   if (GTK_IS_TREE_SORTABLE (model))
 774     gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
 775                                           &sort_column_id,
 776                                           NULL);
 777
 778   if (tree_column->show_sort_indicator)
 779     {
 780       gboolean alternative;
 781
 782       g_object_get (gtk_widget_get_settings (tree_column->tree_view),
 783                     "gtk-alternative-sort-arrows", &alternative,
 784                     NULL);
 785
 786       switch (tree_column->sort_order)
 787         {
 788           case GTK_SORT_ASCENDING:
 789             arrow_type = alternative ? GTK_ARROW_UP : GTK_ARROW_DOWN;
 790             break;
 791
 792           case GTK_SORT_DESCENDING:
 793             arrow_type = alternative ? GTK_ARROW_DOWN : GTK_ARROW_UP;
 794             break;
 795
 796           default:
 797             g_warning (G_STRLOC": bad sort order");
 798             break;
 799         }
 800     }
 801
 802   gtk_arrow_set (GTK_ARROW (arrow),
 803                  arrow_type,
 804                  GTK_SHADOW_IN);
 805
 806   /* Put arrow on the right if the text is left-or-center justified, and on the
 807    * left otherwise; do this by packing boxes, so flipping text direction will
 808    * reverse things
 809    */
 810   g_object_ref (arrow);
 811   gtk_container_remove (GTK_CONTAINER (hbox), arrow);
 812
 813   if (tree_column->xalign <= 0.5)
 814     {
 815       gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
 816     }
 817   else
 818     {
 819       gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
 820       /* move it to the front */
 821       gtk_box_reorder_child (GTK_BOX (hbox), arrow, 0);
 822     }
 823   g_object_unref (arrow);
 824
 825   if (tree_column->show_sort_indicator
 826       || (GTK_IS_TREE_SORTABLE (model) && tree_column->sort_column_id >= 0))
 827     gtk_widget_show (arrow);
 828   else
 829     gtk_widget_hide (arrow);
 830
 831   /* It's always safe to hide the button.  It isn't always safe to show it, as
 832    * if you show it before it's realized, it'll get the wrong window. */
 833   if (tree_column->button &&
 834       tree_column->tree_view != NULL &&
 835       gtk_widget_get_realized (tree_column->tree_view))
 836     {
 837       if (tree_column->visible)
 838         {
 839           gtk_widget_show_now (tree_column->button);
 840           if (tree_column->window)
 841             {
 842               if (tree_column->resizable)
 843                 {
 844                   gdk_window_show (tree_column->window);
 845                   gdk_window_raise (tree_column->window);
 846                 }
 847               else
 848                 {
 849                   gdk_window_hide (tree_column->window);
 850                 }
 851             }
 852         }
 853       else
 854         {
 855           gtk_widget_hide (tree_column->button);
 856           if (tree_column->window)
 857             gdk_window_hide (tree_column->window);
 858         }
 859     }
 860
 861   if (tree_column->reorderable || tree_column->clickable)
 862     {
 863       gtk_widget_set_can_focus (tree_column->button, TRUE);
 864     }
 865   else
 866     {
 867       gtk_widget_set_can_focus (tree_column->button, FALSE);
 868       if (gtk_widget_has_focus (tree_column->button))
 869         {
 870           GtkWidget *toplevel = gtk_widget_get_toplevel (tree_column->tree_view);
 871           if (gtk_widget_is_toplevel (toplevel))
 872             {
 873               gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
 874             }
 875         }
 876     }
 877   /* Queue a resize on the assumption that we always want to catch all changes
 878    * and columns don't change all that often.
 879    */
 880   if (gtk_widget_get_realized (tree_column->tree_view))
 881      gtk_widget_queue_resize (tree_column->tree_view);
 882
 883 }
 884
 885 /* Button signal handlers
 886  */
 887
 888 static gint
 889 gtk_tree_view_column_button_event (GtkWidget *widget,
 890                                    GdkEvent  *event,
 891                                    gpointer   data)
 892 {
 893   GtkTreeViewColumn *column = (GtkTreeViewColumn *) data;
 894
 895   g_return_val_if_fail (event != NULL, FALSE);
 896
 897   if (event->type == GDK_BUTTON_PRESS &&
 898       column->reorderable &&
 899       ((GdkEventButton *)event)->button == 1)
 900     {
 901       column->maybe_reordered = TRUE;
 902       gdk_window_get_pointer (gtk_button_get_event_window (GTK_BUTTON (widget)),
 903                               &column->drag_x,
 904                               &column->drag_y,
 905                               NULL);
 906       gtk_widget_grab_focus (widget);
 907     }
 908
 909   if (event->type == GDK_BUTTON_RELEASE ||
 910       event->type == GDK_LEAVE_NOTIFY)
 911     column->maybe_reordered = FALSE;
 912
 913   if (event->type == GDK_MOTION_NOTIFY &&
 914       column->maybe_reordered &&
 915       (gtk_drag_check_threshold (widget,
 916                                  column->drag_x,
 917                                  column->drag_y,
 918                                  (gint) ((GdkEventMotion *)event)->x,
 919                                  (gint) ((GdkEventMotion *)event)->y)))
 920     {
 921       column->maybe_reordered = FALSE;
 922       _gtk_tree_view_column_start_drag (GTK_TREE_VIEW (column->tree_view), column,
 923                                         event->motion.device);
 924       return TRUE;
 925     }
 926   if (column->clickable == FALSE)
 927     {
 928       switch (event->type)
 929         {
 930         case GDK_BUTTON_PRESS:
 931         case GDK_2BUTTON_PRESS:
 932         case GDK_3BUTTON_PRESS:
 933         case GDK_MOTION_NOTIFY:
 934         case GDK_BUTTON_RELEASE:
 935         case GDK_ENTER_NOTIFY:
 936         case GDK_LEAVE_NOTIFY:
 937           return TRUE;
 938         default:
 939           return FALSE;
 940         }
 941     }
 942   return FALSE;
 943 }
 944
 945
 946 static void
 947 gtk_tree_view_column_button_clicked (GtkWidget *widget, gpointer data)
 948 {
 949   g_signal_emit_by_name (data, "clicked");
 950 }
 951
 952 static gboolean
 953 gtk_tree_view_column_mnemonic_activate (GtkWidget *widget,
 954                                         gboolean   group_cycling,
 955                                         gpointer   data)
 956 {
 957   GtkTreeViewColumn *column = (GtkTreeViewColumn *)data;
 958
 959   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), FALSE);
 960
 961   GTK_TREE_VIEW (column->tree_view)->priv->focus_column = column;
 962   if (column->clickable)
 963     gtk_button_clicked (GTK_BUTTON (column->button));
 964   else if (gtk_widget_get_can_focus (column->button))
 965     gtk_widget_grab_focus (column->button);
 966   else
 967     gtk_widget_grab_focus (column->tree_view);
 968
 969   return TRUE;
 970 }
 971
 972 static void
 973 gtk_tree_view_model_sort_column_changed (GtkTreeSortable   *sortable,
 974                                          GtkTreeViewColumn *column)
 975 {
 976   gint sort_column_id;
 977   GtkSortType order;
 978
 979   if (gtk_tree_sortable_get_sort_column_id (sortable,
 980                                             &sort_column_id,
 981                                             &order))
 982     {
 983       if (sort_column_id == column->sort_column_id)
 984         {
 985           gtk_tree_view_column_set_sort_indicator (column, TRUE);
 986           gtk_tree_view_column_set_sort_order (column, order);
 987         }
 988       else
 989         {
 990           gtk_tree_view_column_set_sort_indicator (column, FALSE);
 991         }
 992     }
 993   else
 994     {
 995       gtk_tree_view_column_set_sort_indicator (column, FALSE);
 996     }
 997 }
 998
 999 static void
1000 gtk_tree_view_column_sort (GtkTreeViewColumn *tree_column,
1001                            gpointer           data)
1002 {
1003   gint sort_column_id;
1004   GtkSortType order;
1005   gboolean has_sort_column;
1006   gboolean has_default_sort_func;
1007
1008   g_return_if_fail (tree_column->tree_view != NULL);
1009
1010   has_sort_column =
1011     gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (GTK_TREE_VIEW (tree_column->tree_view)->priv->model),
1012                                           &sort_column_id,
1013                                           &order);
1014   has_default_sort_func =
1015     gtk_tree_sortable_has_default_sort_func (GTK_TREE_SORTABLE (GTK_TREE_VIEW (tree_column->tree_view)->priv->model));
1016
1017   if (has_sort_column &&
1018       sort_column_id == tree_column->sort_column_id)
1019     {
1020       if (order == GTK_SORT_ASCENDING)
1021         gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (GTK_TREE_VIEW (tree_column->tree_view)->priv->model),
1022                                               tree_column->sort_column_id,
1023                                               GTK_SORT_DESCENDING);
1024       else if (order == GTK_SORT_DESCENDING && has_default_sort_func)
1025         gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (GTK_TREE_VIEW (tree_column->tree_view)->priv->model),
1026                                               GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
1027                                               GTK_SORT_ASCENDING);
1028       else
1029         gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (GTK_TREE_VIEW (tree_column->tree_view)->priv->model),
1030                                               tree_column->sort_column_id,
1031                                               GTK_SORT_ASCENDING);
1032     }
1033   else
1034     {
1035       gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (GTK_TREE_VIEW (tree_column->tree_view)->priv->model),
1036                                             tree_column->sort_column_id,
1037                                             GTK_SORT_ASCENDING);
1038     }
1039 }
1040
1041
1042 static void
1043 gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn *tree_column)
1044 {
1045   GtkTreeModel *model;
1046
1047   if (tree_column->tree_view == NULL)
1048     return;
1049
1050   model = gtk_tree_view_get_model (GTK_TREE_VIEW (tree_column->tree_view));
1051
1052   if (model == NULL)
1053     return;
1054
1055   if (GTK_IS_TREE_SORTABLE (model) &&
1056       tree_column->sort_column_id != -1)
1057     {
1058       gint real_sort_column_id;
1059       GtkSortType real_order;
1060
1061       if (tree_column->sort_column_changed_signal == 0)
1062         tree_column->sort_column_changed_signal =
1063           g_signal_connect (model, "sort-column-changed",
1064                             G_CALLBACK (gtk_tree_view_model_sort_column_changed),
1065                             tree_column);
1066
1067       if (gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
1068                                                 &real_sort_column_id,
1069                                                 &real_order) &&
1070           (real_sort_column_id == tree_column->sort_column_id))
1071         {
1072           gtk_tree_view_column_set_sort_indicator (tree_column, TRUE);
1073           gtk_tree_view_column_set_sort_order (tree_column, real_order);
1074         }
1075       else
1076         {
1077           gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
1078         }
1079    }
1080 }
1081
1082 static void
1083 gtk_tree_view_column_context_changed  (GtkCellAreaContext      *context,
1084                                        GParamSpec              *pspec,
1085                                        GtkTreeViewColumn       *tree_column)
1086 {
1087   if (!strcmp (pspec->name, "minimum-width") ||
1088       !strcmp (pspec->name, "natural-width") ||
1089       !strcmp (pspec->name, "minimum-height") ||
1090       !strcmp (pspec->name, "natural-height"))
1091     {
1092       /* XXX We want to do something specific if the size actually got cleared
1093        * or if it just grew a little bit because of a data change and we
1094        * are in GROW_ONLY mode.
1095        */
1096       _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1097     }
1098 }
1099
1100 static void
1101 gtk_tree_view_column_add_editable_callback (GtkCellArea       *area,
1102                                             GtkCellRenderer   *renderer,
1103                                             GtkCellEditable   *edit_widget,
1104                                             GdkRectangle      *cell_area,
1105                                             const gchar       *path_string,
1106                                             gpointer           user_data)
1107 {
1108   GtkTreePath *path;
1109   GtkTreeViewColumn *column = user_data;
1110
1111   path = gtk_tree_path_new_from_string (path_string);
1112
1113   _gtk_tree_view_add_editable (GTK_TREE_VIEW (column->tree_view),
1114                                column,
1115                                path,
1116                                edit_widget,
1117                                cell_area);
1118
1119   gtk_tree_path_free (path);
1120 }
1121
1122 static void
1123 gtk_tree_view_column_remove_editable_callback (GtkCellArea     *area,
1124                                                GtkCellRenderer *renderer,
1125                                                GtkCellEditable *edit_widget,
1126                                                gpointer         user_data)
1127 {
1128   GtkTreeViewColumn *column = user_data;
1129
1130   _gtk_tree_view_remove_editable (GTK_TREE_VIEW (column->tree_view),
1131                                   column,
1132                                   edit_widget);
1133 }
1134
1135 /* Exported Private Functions.
1136  * These should only be called by gtktreeview.c or gtktreeviewcolumn.c
1137  */
1138
1139 void
1140 _gtk_tree_view_column_realize_button (GtkTreeViewColumn *column)
1141 {
1142   GtkAllocation allocation;
1143   GtkTreeView *tree_view;
1144   GdkWindowAttr attr;
1145   guint attributes_mask;
1146   gboolean rtl;
1147
1148   tree_view = (GtkTreeView *)column->tree_view;
1149   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
1150
1151   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
1152   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
1153   g_return_if_fail (tree_view->priv->header_window != NULL);
1154   g_return_if_fail (column->button != NULL);
1155
1156   gtk_widget_set_parent_window (column->button, tree_view->priv->header_window);
1157
1158   if (column->visible)
1159     gtk_widget_show (column->button);
1160
1161   attr.window_type = GDK_WINDOW_CHILD;
1162   attr.wclass = GDK_INPUT_ONLY;
1163   attr.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
1164   attr.event_mask = gtk_widget_get_events (GTK_WIDGET (tree_view)) |
1165                     (GDK_BUTTON_PRESS_MASK |
1166                      GDK_BUTTON_RELEASE_MASK |
1167                      GDK_POINTER_MOTION_MASK |
1168                      GDK_POINTER_MOTION_HINT_MASK |
1169                      GDK_KEY_PRESS_MASK);
1170   attributes_mask = GDK_WA_CURSOR | GDK_WA_X | GDK_WA_Y;
1171   attr.cursor = gdk_cursor_new_for_display (gdk_window_get_display (tree_view->priv->header_window),
1172                                             GDK_SB_H_DOUBLE_ARROW);
1173   attr.y = 0;
1174   attr.width = TREE_VIEW_DRAG_WIDTH;
1175   attr.height = tree_view->priv->header_height;
1176
1177   gtk_widget_get_allocation (column->button, &allocation);
1178   attr.x = (allocation.x + (rtl ? 0 : allocation.width)) - TREE_VIEW_DRAG_WIDTH / 2;
1179   column->window = gdk_window_new (tree_view->priv->header_window,
1180                                    &attr, attributes_mask);
1181   gdk_window_set_user_data (column->window, tree_view);
1182
1183   gtk_tree_view_column_update_button (column);
1184
1185   gdk_cursor_unref (attr.cursor);
1186 }
1187
1188 void
1189 _gtk_tree_view_column_unrealize_button (GtkTreeViewColumn *column)
1190 {
1191   g_return_if_fail (column != NULL);
1192   g_return_if_fail (column->window != NULL);
1193
1194   gdk_window_set_user_data (column->window, NULL);
1195   gdk_window_destroy (column->window);
1196   column->window = NULL;
1197 }
1198
1199 void
1200 _gtk_tree_view_column_unset_model (GtkTreeViewColumn *column,
1201                                    GtkTreeModel      *old_model)
1202 {
1203   if (column->sort_column_changed_signal)
1204     {
1205       g_signal_handler_disconnect (old_model,
1206                                    column->sort_column_changed_signal);
1207       column->sort_column_changed_signal = 0;
1208     }
1209   gtk_tree_view_column_set_sort_indicator (column, FALSE);
1210 }
1211
1212 void
1213 _gtk_tree_view_column_set_tree_view (GtkTreeViewColumn *column,
1214                                      GtkTreeView       *tree_view)
1215 {
1216   g_assert (column->tree_view == NULL);
1217
1218   column->tree_view = GTK_WIDGET (tree_view);
1219   gtk_tree_view_column_create_button (column);
1220
1221   column->add_editable_signal =
1222       g_signal_connect (column->cell_area, "add-editable",
1223                         G_CALLBACK (gtk_tree_view_column_add_editable_callback),
1224                         column);
1225   column->remove_editable_signal =
1226       g_signal_connect (column->cell_area, "remove-editable",
1227                         G_CALLBACK (gtk_tree_view_column_remove_editable_callback),
1228                         column);
1229
1230   column->property_changed_signal =
1231           g_signal_connect_swapped (tree_view,
1232                                     "notify::model",
1233                                     G_CALLBACK (gtk_tree_view_column_setup_sort_column_id_callback),
1234                                     column);
1235
1236   gtk_tree_view_column_setup_sort_column_id_callback (column);
1237 }
1238
1239 void
1240 _gtk_tree_view_column_unset_tree_view (GtkTreeViewColumn *column)
1241 {
1242   if (column->tree_view && column->button)
1243     {
1244       gtk_container_remove (GTK_CONTAINER (column->tree_view), column->button);
1245     }
1246   if (column->property_changed_signal)
1247     {
1248       g_signal_handler_disconnect (column->tree_view, column->property_changed_signal);
1249       column->property_changed_signal = 0;
1250     }
1251
1252   if (column->sort_column_changed_signal)
1253     {
1254       g_signal_handler_disconnect (gtk_tree_view_get_model (GTK_TREE_VIEW (column->tree_view)),
1255                                    column->sort_column_changed_signal);
1256       column->sort_column_changed_signal = 0;
1257     }
1258
1259   column->tree_view = NULL;
1260   column->button = NULL;
1261 }
1262
1263 gboolean
1264 _gtk_tree_view_column_has_editable_cell (GtkTreeViewColumn *column)
1265 {
1266   gboolean ret = FALSE;
1267   GList *list, *cells;
1268
1269   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (column->cell_area));
1270
1271   for (list = cells; list; list = list->next)
1272     {
1273       GtkCellRenderer *cell = list->data;
1274       GtkCellRendererMode mode;
1275
1276       g_object_get (cell, "mode", &mode, NULL);
1277
1278       if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
1279         {
1280           ret = TRUE;
1281           break;
1282         }
1283     }
1284
1285   g_list_free (cells);
1286
1287   return ret;
1288 }
1289
1290 /* gets cell being edited */
1291 GtkCellRenderer *
1292 _gtk_tree_view_column_get_edited_cell (GtkTreeViewColumn *column)
1293 {
1294   return gtk_cell_area_get_edited_cell (column->cell_area);
1295 }
1296
1297 /* Public Functions */
1298
1299
1300 /**
1301  * gtk_tree_view_column_new:
1302  *
1303  * Creates a new #GtkTreeViewColumn.
1304  *
1305  * Return value: A newly created #GtkTreeViewColumn.
1306  **/
1307 GtkTreeViewColumn *
1308 gtk_tree_view_column_new (void)
1309 {
1310   GtkTreeViewColumn *tree_column;
1311
1312   tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, NULL);
1313
1314   return tree_column;
1315 }
1316
1317 /**
1318  * gtk_tree_view_column_new_with_attributes:
1319  * @title: The title to set the header to.
1320  * @cell: The #GtkCellRenderer.
1321  * @Varargs: A %NULL-terminated list of attributes.
1322  *
1323  * Creates a new #GtkTreeViewColumn with a number of default values.  This is
1324  * equivalent to calling gtk_tree_view_column_set_title(),
1325  * gtk_tree_view_column_pack_start(), and
1326  * gtk_tree_view_column_set_attributes() on the newly created #GtkTreeViewColumn.
1327  *
1328  * Here's a simple example:
1329  * |[
1330  *  enum { TEXT_COLUMN, COLOR_COLUMN, N_COLUMNS };
1331  *  ...
1332  *  {
1333  *    GtkTreeViewColumn *column;
1334  *    GtkCellRenderer   *renderer = gtk_cell_renderer_text_new ();
1335  *
1336  *    column = gtk_tree_view_column_new_with_attributes ("Title",
1337  *                                                       renderer,
1338  *                                                       "text", TEXT_COLUMN,
1339  *                                                       "foreground", COLOR_COLUMN,
1340  *                                                       NULL);
1341  *  }
1342  * ]|
1343  *
1344  * Return value: A newly created #GtkTreeViewColumn.
1345  **/
1346 GtkTreeViewColumn *
1347 gtk_tree_view_column_new_with_attributes (const gchar     *title,
1348                                           GtkCellRenderer *cell,
1349                                           ...)
1350 {
1351   GtkTreeViewColumn *retval;
1352   va_list args;
1353
1354   retval = gtk_tree_view_column_new ();
1355
1356   gtk_tree_view_column_set_title (retval, title);
1357   gtk_tree_view_column_pack_start (retval, cell, TRUE);
1358
1359   va_start (args, cell);
1360   gtk_tree_view_column_set_attributesv (retval, cell, args);
1361   va_end (args);
1362
1363   return retval;
1364 }
1365
1366 /**
1367  * gtk_tree_view_column_pack_start:
1368  * @tree_column: A #GtkTreeViewColumn.
1369  * @cell: The #GtkCellRenderer.
1370  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1371  *
1372  * Packs the @cell into the beginning of the column. If @expand is %FALSE, then
1373  * the @cell is allocated no more space than it needs. Any unused space is divided
1374  * evenly between cells for which @expand is %TRUE.
1375  **/
1376 void
1377 gtk_tree_view_column_pack_start (GtkTreeViewColumn *tree_column,
1378                                  GtkCellRenderer   *cell,
1379                                  gboolean           expand)
1380 {
1381   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (tree_column), cell, expand);
1382 }
1383
1384 /**
1385  * gtk_tree_view_column_pack_end:
1386  * @tree_column: A #GtkTreeViewColumn.
1387  * @cell: The #GtkCellRenderer.
1388  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1389  *
1390  * Adds the @cell to end of the column. If @expand is %FALSE, then the @cell
1391  * is allocated no more space than it needs. Any unused space is divided
1392  * evenly between cells for which @expand is %TRUE.
1393  **/
1394 void
1395 gtk_tree_view_column_pack_end (GtkTreeViewColumn  *tree_column,
1396                                GtkCellRenderer    *cell,
1397                                gboolean            expand)
1398 {
1399   gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (tree_column), cell, expand);
1400 }
1401
1402 /**
1403  * gtk_tree_view_column_clear:
1404  * @tree_column: A #GtkTreeViewColumn
1405  *
1406  * Unsets all the mappings on all renderers on the @tree_column.
1407  **/
1408 void
1409 gtk_tree_view_column_clear (GtkTreeViewColumn *tree_column)
1410 {
1411   gtk_cell_layout_clear (GTK_CELL_LAYOUT (tree_column));
1412 }
1413
1414 /**
1415  * gtk_tree_view_column_add_attribute:
1416  * @tree_column: A #GtkTreeViewColumn.
1417  * @cell_renderer: the #GtkCellRenderer to set attributes on
1418  * @attribute: An attribute on the renderer
1419  * @column: The column position on the model to get the attribute from.
1420  *
1421  * Adds an attribute mapping to the list in @tree_column.  The @column is the
1422  * column of the model to get a value from, and the @attribute is the
1423  * parameter on @cell_renderer to be set from the value. So for example
1424  * if column 2 of the model contains strings, you could have the
1425  * "text" attribute of a #GtkCellRendererText get its values from
1426  * column 2.
1427  **/
1428 void
1429 gtk_tree_view_column_add_attribute (GtkTreeViewColumn *tree_column,
1430                                     GtkCellRenderer   *cell_renderer,
1431                                     const gchar       *attribute,
1432                                     gint               column)
1433 {
1434   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (tree_column),
1435                                  cell_renderer, attribute, column);
1436 }
1437
1438 static void
1439 gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
1440                                       GtkCellRenderer   *cell_renderer,
1441                                       va_list            args)
1442 {
1443   gchar *attribute;
1444   gint column;
1445
1446   attribute = va_arg (args, gchar *);
1447
1448   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (tree_column->cell_area),
1449                                     cell_renderer);
1450
1451   while (attribute != NULL)
1452     {
1453       column = va_arg (args, gint);
1454       gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (tree_column->cell_area),
1455                                      cell_renderer, attribute, column);
1456       attribute = va_arg (args, gchar *);
1457     }
1458 }
1459
1460 /**
1461  * gtk_tree_view_column_set_attributes:
1462  * @tree_column: A #GtkTreeViewColumn.
1463  * @cell_renderer: the #GtkCellRenderer we're setting the attributes of
1464  * @Varargs: A %NULL-terminated list of attributes.
1465  *
1466  * Sets the attributes in the list as the attributes of @tree_column.
1467  * The attributes should be in attribute/column order, as in
1468  * gtk_tree_view_column_add_attribute(). All existing attributes
1469  * are removed, and replaced with the new attributes.
1470  **/
1471 void
1472 gtk_tree_view_column_set_attributes (GtkTreeViewColumn *tree_column,
1473                                      GtkCellRenderer   *cell_renderer,
1474                                      ...)
1475 {
1476   va_list args;
1477
1478   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1479   g_return_if_fail (GTK_IS_CELL_RENDERER (cell_renderer));
1480
1481   va_start (args, cell_renderer);
1482   gtk_tree_view_column_set_attributesv (tree_column, cell_renderer, args);
1483   va_end (args);
1484 }
1485
1486
1487 /**
1488  * gtk_tree_view_column_set_cell_data_func:
1489  * @tree_column: A #GtkTreeViewColumn
1490  * @cell_renderer: A #GtkCellRenderer
1491  * @func: The #GtkTreeViewColumnFunc to use.
1492  * @func_data: The user data for @func.
1493  * @destroy: The destroy notification for @func_data
1494  *
1495  * Sets the #GtkTreeViewColumnFunc to use for the column.  This
1496  * function is used instead of the standard attributes mapping for
1497  * setting the column value, and should set the value of @tree_column's
1498  * cell renderer as appropriate.  @func may be %NULL to remove an
1499  * older one.
1500  **/
1501 void
1502 gtk_tree_view_column_set_cell_data_func (GtkTreeViewColumn   *tree_column,
1503                                          GtkCellRenderer     *cell_renderer,
1504                                          GtkTreeCellDataFunc  func,
1505                                          gpointer             func_data,
1506                                          GDestroyNotify       destroy)
1507 {
1508   gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (tree_column),
1509                                       cell_renderer,
1510                                       (GtkCellLayoutDataFunc)func,
1511                                       func_data, destroy);
1512 }
1513
1514
1515 /**
1516  * gtk_tree_view_column_clear_attributes:
1517  * @tree_column: a #GtkTreeViewColumn
1518  * @cell_renderer: a #GtkCellRenderer to clear the attribute mapping on.
1519  *
1520  * Clears all existing attributes previously set with
1521  * gtk_tree_view_column_set_attributes().
1522  **/
1523 void
1524 gtk_tree_view_column_clear_attributes (GtkTreeViewColumn *tree_column,
1525                                        GtkCellRenderer   *cell_renderer)
1526 {
1527   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (tree_column),
1528                                     cell_renderer);
1529 }
1530
1531 /**
1532  * gtk_tree_view_column_set_spacing:
1533  * @tree_column: A #GtkTreeViewColumn.
1534  * @spacing: distance between cell renderers in pixels.
1535  *
1536  * Sets the spacing field of @tree_column, which is the number of pixels to
1537  * place between cell renderers packed into it.
1538  **/
1539 void
1540 gtk_tree_view_column_set_spacing (GtkTreeViewColumn *tree_column,
1541                                   gint               spacing)
1542 {
1543   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1544   g_return_if_fail (spacing >= 0);
1545
1546   gtk_cell_area_box_set_spacing (GTK_CELL_AREA_BOX (tree_column->cell_area),
1547                                  spacing);
1548   if (tree_column->tree_view)
1549     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1550 }
1551
1552 /**
1553  * gtk_tree_view_column_get_spacing:
1554  * @tree_column: A #GtkTreeViewColumn.
1555  *
1556  * Returns the spacing of @tree_column.
1557  *
1558  * Return value: the spacing of @tree_column.
1559  **/
1560 gint
1561 gtk_tree_view_column_get_spacing (GtkTreeViewColumn *tree_column)
1562 {
1563   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1564
1565   return gtk_cell_area_box_get_spacing (GTK_CELL_AREA_BOX (tree_column->cell_area));
1566 }
1567
1568 /* Options for manipulating the columns */
1569
1570 /**
1571  * gtk_tree_view_column_set_visible:
1572  * @tree_column: A #GtkTreeViewColumn.
1573  * @visible: %TRUE if the @tree_column is visible.
1574  *
1575  * Sets the visibility of @tree_column.
1576  **/
1577 void
1578 gtk_tree_view_column_set_visible (GtkTreeViewColumn *tree_column,
1579                                   gboolean           visible)
1580 {
1581   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1582
1583   visible = !! visible;
1584
1585   if (tree_column->visible == visible)
1586     return;
1587
1588   tree_column->visible = visible;
1589
1590   if (tree_column->visible)
1591     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1592
1593   gtk_tree_view_column_update_button (tree_column);
1594   g_object_notify (G_OBJECT (tree_column), "visible");
1595 }
1596
1597 /**
1598  * gtk_tree_view_column_get_visible:
1599  * @tree_column: A #GtkTreeViewColumn.
1600  *
1601  * Returns %TRUE if @tree_column is visible.
1602  *
1603  * Return value: whether the column is visible or not.  If it is visible, then
1604  * the tree will show the column.
1605  **/
1606 gboolean
1607 gtk_tree_view_column_get_visible (GtkTreeViewColumn *tree_column)
1608 {
1609   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
1610
1611   return tree_column->visible;
1612 }
1613
1614 /**
1615  * gtk_tree_view_column_set_resizable:
1616  * @tree_column: A #GtkTreeViewColumn
1617  * @resizable: %TRUE, if the column can be resized
1618  *
1619  * If @resizable is %TRUE, then the user can explicitly resize the column by
1620  * grabbing the outer edge of the column button.  If resizable is %TRUE and
1621  * sizing mode of the column is #GTK_TREE_VIEW_COLUMN_AUTOSIZE, then the sizing
1622  * mode is changed to #GTK_TREE_VIEW_COLUMN_GROW_ONLY.
1623  **/
1624 void
1625 gtk_tree_view_column_set_resizable (GtkTreeViewColumn *tree_column,
1626                                     gboolean           resizable)
1627 {
1628   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1629
1630   resizable = !! resizable;
1631
1632   if (tree_column->resizable == resizable)
1633     return;
1634
1635   tree_column->resizable = resizable;
1636
1637   if (resizable && tree_column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1638     gtk_tree_view_column_set_sizing (tree_column, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
1639
1640   gtk_tree_view_column_update_button (tree_column);
1641
1642   g_object_notify (G_OBJECT (tree_column), "resizable");
1643 }
1644
1645 /**
1646  * gtk_tree_view_column_get_resizable:
1647  * @tree_column: A #GtkTreeViewColumn
1648  *
1649  * Returns %TRUE if the @tree_column can be resized by the end user.
1650  *
1651  * Return value: %TRUE, if the @tree_column can be resized.
1652  **/
1653 gboolean
1654 gtk_tree_view_column_get_resizable (GtkTreeViewColumn *tree_column)
1655 {
1656   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
1657
1658   return tree_column->resizable;
1659 }
1660
1661
1662 /**
1663  * gtk_tree_view_column_set_sizing:
1664  * @tree_column: A #GtkTreeViewColumn.
1665  * @type: The #GtkTreeViewColumnSizing.
1666  *
1667  * Sets the growth behavior of @tree_column to @type.
1668  **/
1669 void
1670 gtk_tree_view_column_set_sizing (GtkTreeViewColumn       *tree_column,
1671                                  GtkTreeViewColumnSizing  type)
1672 {
1673   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1674
1675   if (type == tree_column->column_type)
1676     return;
1677
1678   if (type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1679     gtk_tree_view_column_set_resizable (tree_column, FALSE);
1680
1681 #if 0
1682   /* I was clearly on crack when I wrote this.  I'm not sure what's supposed to
1683    * be below so I'll leave it until I figure it out.
1684    */
1685   if (tree_column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE &&
1686       tree_column->requested_width != -1)
1687     {
1688       gtk_tree_view_column_set_sizing (tree_column, tree_column->requested_width);
1689     }
1690 #endif
1691   tree_column->column_type = type;
1692
1693   gtk_tree_view_column_update_button (tree_column);
1694
1695   g_object_notify (G_OBJECT (tree_column), "sizing");
1696 }
1697
1698 /**
1699  * gtk_tree_view_column_get_sizing:
1700  * @tree_column: A #GtkTreeViewColumn.
1701  *
1702  * Returns the current type of @tree_column.
1703  *
1704  * Return value: The type of @tree_column.
1705  **/
1706 GtkTreeViewColumnSizing
1707 gtk_tree_view_column_get_sizing (GtkTreeViewColumn *tree_column)
1708 {
1709   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1710
1711   return tree_column->column_type;
1712 }
1713
1714 /**
1715  * gtk_tree_view_column_get_width:
1716  * @tree_column: A #GtkTreeViewColumn.
1717  *
1718  * Returns the current size of @tree_column in pixels.
1719  *
1720  * Return value: The current width of @tree_column.
1721  **/
1722 gint
1723 gtk_tree_view_column_get_width (GtkTreeViewColumn *tree_column)
1724 {
1725   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1726
1727   return tree_column->width;
1728 }
1729
1730 void
1731 _gtk_tree_view_column_set_width (GtkTreeViewColumn *tree_column,
1732                                  int                width,
1733                                  int                internal_width)
1734 {
1735   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1736
1737   gtk_cell_area_context_allocate (tree_column->cell_area_context, internal_width, -1);
1738   tree_column->width = width;
1739
1740   g_object_notify (G_OBJECT (tree_column), "width");
1741 }
1742
1743 /**
1744  * gtk_tree_view_column_set_fixed_width:
1745  * @tree_column: A #GtkTreeViewColumn.
1746  * @fixed_width: The size to set @tree_column to. Must be greater than 0.
1747  *
1748  * Sets the size of the column in pixels.  This is meaningful only if the sizing
1749  * type is #GTK_TREE_VIEW_COLUMN_FIXED.  The size of the column is clamped to
1750  * the min/max width for the column.  Please note that the min/max width of the
1751  * column doesn't actually affect the "fixed_width" property of the widget, just
1752  * the actual size when displayed.
1753  **/
1754 void
1755 gtk_tree_view_column_set_fixed_width (GtkTreeViewColumn *tree_column,
1756                                       gint               fixed_width)
1757 {
1758   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1759   g_return_if_fail (fixed_width > 0);
1760
1761   tree_column->fixed_width = fixed_width;
1762   tree_column->use_resized_width = FALSE;
1763
1764   if (tree_column->tree_view &&
1765       gtk_widget_get_realized (tree_column->tree_view) &&
1766       tree_column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1767     {
1768       gtk_widget_queue_resize (tree_column->tree_view);
1769     }
1770
1771   g_object_notify (G_OBJECT (tree_column), "fixed-width");
1772 }
1773
1774 /**
1775  * gtk_tree_view_column_get_fixed_width:
1776  * @tree_column: a #GtkTreeViewColumn
1777  *
1778  * Gets the fixed width of the column.  This value is only meaning may not be
1779  * the actual width of the column on the screen, just what is requested.
1780  *
1781  * Return value: the fixed width of the column
1782  **/
1783 gint
1784 gtk_tree_view_column_get_fixed_width (GtkTreeViewColumn *tree_column)
1785 {
1786   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1787
1788   return tree_column->fixed_width;
1789 }
1790
1791 /**
1792  * gtk_tree_view_column_set_min_width:
1793  * @tree_column: A #GtkTreeViewColumn.
1794  * @min_width: The minimum width of the column in pixels, or -1.
1795  *
1796  * Sets the minimum width of the @tree_column.  If @min_width is -1, then the
1797  * minimum width is unset.
1798  **/
1799 void
1800 gtk_tree_view_column_set_min_width (GtkTreeViewColumn *tree_column,
1801                                     gint               min_width)
1802 {
1803   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1804   g_return_if_fail (min_width >= -1);
1805
1806   if (min_width == tree_column->min_width)
1807     return;
1808
1809   if (tree_column->visible &&
1810       tree_column->tree_view != NULL &&
1811       gtk_widget_get_realized (tree_column->tree_view))
1812     {
1813       if (min_width > tree_column->width)
1814         gtk_widget_queue_resize (tree_column->tree_view);
1815     }
1816
1817   tree_column->min_width = min_width;
1818   g_object_freeze_notify (G_OBJECT (tree_column));
1819   if (tree_column->max_width != -1 && tree_column->max_width < min_width)
1820     {
1821       tree_column->max_width = min_width;
1822       g_object_notify (G_OBJECT (tree_column), "max-width");
1823     }
1824   g_object_notify (G_OBJECT (tree_column), "min-width");
1825   g_object_thaw_notify (G_OBJECT (tree_column));
1826
1827   if (tree_column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1828     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (tree_column->tree_view),
1829                                     tree_column);
1830 }
1831
1832 /**
1833  * gtk_tree_view_column_get_min_width:
1834  * @tree_column: A #GtkTreeViewColumn.
1835  *
1836  * Returns the minimum width in pixels of the @tree_column, or -1 if no minimum
1837  * width is set.
1838  *
1839  * Return value: The minimum width of the @tree_column.
1840  **/
1841 gint
1842 gtk_tree_view_column_get_min_width (GtkTreeViewColumn *tree_column)
1843 {
1844   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
1845
1846   return tree_column->min_width;
1847 }
1848
1849 /**
1850  * gtk_tree_view_column_set_max_width:
1851  * @tree_column: A #GtkTreeViewColumn.
1852  * @max_width: The maximum width of the column in pixels, or -1.
1853  *
1854  * Sets the maximum width of the @tree_column.  If @max_width is -1, then the
1855  * maximum width is unset.  Note, the column can actually be wider than max
1856  * width if it's the last column in a view.  In this case, the column expands to
1857  * fill any extra space.
1858  **/
1859 void
1860 gtk_tree_view_column_set_max_width (GtkTreeViewColumn *tree_column,
1861                                     gint               max_width)
1862 {
1863   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1864   g_return_if_fail (max_width >= -1);
1865
1866   if (max_width == tree_column->max_width)
1867     return;
1868
1869   if (tree_column->visible &&
1870       tree_column->tree_view != NULL &&
1871       gtk_widget_get_realized (tree_column->tree_view))
1872     {
1873       if (max_width != -1 && max_width < tree_column->width)
1874         gtk_widget_queue_resize (tree_column->tree_view);
1875     }
1876
1877   tree_column->max_width = max_width;
1878   g_object_freeze_notify (G_OBJECT (tree_column));
1879   if (max_width != -1 && max_width < tree_column->min_width)
1880     {
1881       tree_column->min_width = max_width;
1882       g_object_notify (G_OBJECT (tree_column), "min-width");
1883     }
1884   g_object_notify (G_OBJECT (tree_column), "max-width");
1885   g_object_thaw_notify (G_OBJECT (tree_column));
1886
1887   if (tree_column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1888     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (tree_column->tree_view),
1889                                     tree_column);
1890 }
1891
1892 /**
1893  * gtk_tree_view_column_get_max_width:
1894  * @tree_column: A #GtkTreeViewColumn.
1895  *
1896  * Returns the maximum width in pixels of the @tree_column, or -1 if no maximum
1897  * width is set.
1898  *
1899  * Return value: The maximum width of the @tree_column.
1900  **/
1901 gint
1902 gtk_tree_view_column_get_max_width (GtkTreeViewColumn *tree_column)
1903 {
1904   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
1905
1906   return tree_column->max_width;
1907 }
1908
1909 /**
1910  * gtk_tree_view_column_clicked:
1911  * @tree_column: a #GtkTreeViewColumn
1912  *
1913  * Emits the "clicked" signal on the column.  This function will only work if
1914  * @tree_column is clickable.
1915  **/
1916 void
1917 gtk_tree_view_column_clicked (GtkTreeViewColumn *tree_column)
1918 {
1919   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1920
1921   if (tree_column->visible &&
1922       tree_column->button &&
1923       tree_column->clickable)
1924     gtk_button_clicked (GTK_BUTTON (tree_column->button));
1925 }
1926
1927 /**
1928  * gtk_tree_view_column_set_title:
1929  * @tree_column: A #GtkTreeViewColumn.
1930  * @title: The title of the @tree_column.
1931  *
1932  * Sets the title of the @tree_column.  If a custom widget has been set, then
1933  * this value is ignored.
1934  **/
1935 void
1936 gtk_tree_view_column_set_title (GtkTreeViewColumn *tree_column,
1937                                 const gchar       *title)
1938 {
1939   gchar *new_title;
1940
1941   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1942
1943   new_title = g_strdup (title);
1944   g_free (tree_column->title);
1945   tree_column->title = new_title;
1946
1947   gtk_tree_view_column_update_button (tree_column);
1948   g_object_notify (G_OBJECT (tree_column), "title");
1949 }
1950
1951 /**
1952  * gtk_tree_view_column_get_title:
1953  * @tree_column: A #GtkTreeViewColumn.
1954  *
1955  * Returns the title of the widget.
1956  *
1957  * Return value: the title of the column. This string should not be
1958  * modified or freed.
1959  **/
1960 G_CONST_RETURN gchar *
1961 gtk_tree_view_column_get_title (GtkTreeViewColumn *tree_column)
1962 {
1963   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
1964
1965   return tree_column->title;
1966 }
1967
1968 /**
1969  * gtk_tree_view_column_set_expand:
1970  * @tree_column: A #GtkTreeViewColumn
1971  * @expand: %TRUE if the column should take available extra space, %FALSE if not
1972  *
1973  * Sets the column to take available extra space.  This space is shared equally
1974  * amongst all columns that have the expand set to %TRUE.  If no column has this
1975  * option set, then the last column gets all extra space.  By default, every
1976  * column is created with this %FALSE.
1977  *
1978  * Since: 2.4
1979  **/
1980 void
1981 gtk_tree_view_column_set_expand (GtkTreeViewColumn *tree_column,
1982                                  gboolean           expand)
1983 {
1984   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1985
1986   expand = expand?TRUE:FALSE;
1987   if (tree_column->expand == expand)
1988     return;
1989   tree_column->expand = expand;
1990
1991   if (tree_column->visible &&
1992       tree_column->tree_view != NULL &&
1993       gtk_widget_get_realized (tree_column->tree_view))
1994     {
1995       /* We want to continue using the original width of the
1996        * column that includes additional space added by the user
1997        * resizing the columns and possibly extra (expanded) space, which
1998        * are not included in the resized width.
1999        */
2000       tree_column->use_resized_width = FALSE;
2001
2002       gtk_widget_queue_resize (tree_column->tree_view);
2003     }
2004
2005   g_object_notify (G_OBJECT (tree_column), "expand");
2006 }
2007
2008 /**
2009  * gtk_tree_view_column_get_expand:
2010  * @tree_column: a #GtkTreeViewColumn
2011  *
2012  * Return %TRUE if the column expands to take any available space.
2013  *
2014  * Return value: %TRUE, if the column expands
2015  *
2016  * Since: 2.4
2017  **/
2018 gboolean
2019 gtk_tree_view_column_get_expand (GtkTreeViewColumn *tree_column)
2020 {
2021   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2022
2023   return tree_column->expand;
2024 }
2025
2026 /**
2027  * gtk_tree_view_column_set_clickable:
2028  * @tree_column: A #GtkTreeViewColumn.
2029  * @clickable: %TRUE if the header is active.
2030  *
2031  * Sets the header to be active if @active is %TRUE.  When the header is active,
2032  * then it can take keyboard focus, and can be clicked.
2033  **/
2034 void
2035 gtk_tree_view_column_set_clickable (GtkTreeViewColumn *tree_column,
2036                                     gboolean           clickable)
2037 {
2038   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2039
2040   clickable = !! clickable;
2041   if (tree_column->clickable == clickable)
2042     return;
2043
2044   tree_column->clickable = clickable;
2045   gtk_tree_view_column_update_button (tree_column);
2046   g_object_notify (G_OBJECT (tree_column), "clickable");
2047 }
2048
2049 /**
2050  * gtk_tree_view_column_get_clickable:
2051  * @tree_column: a #GtkTreeViewColumn
2052  *
2053  * Returns %TRUE if the user can click on the header for the column.
2054  *
2055  * Return value: %TRUE if user can click the column header.
2056  **/
2057 gboolean
2058 gtk_tree_view_column_get_clickable (GtkTreeViewColumn *tree_column)
2059 {
2060   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2061
2062   return tree_column->clickable;
2063 }
2064
2065 /**
2066  * gtk_tree_view_column_set_widget:
2067  * @tree_column: A #GtkTreeViewColumn.
2068  * @widget: (allow-none): A child #GtkWidget, or %NULL.
2069  *
2070  * Sets the widget in the header to be @widget.  If widget is %NULL, then the
2071  * header button is set with a #GtkLabel set to the title of @tree_column.
2072  **/
2073 void
2074 gtk_tree_view_column_set_widget (GtkTreeViewColumn *tree_column,
2075                                  GtkWidget         *widget)
2076 {
2077   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2078   g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
2079
2080   if (widget)
2081     g_object_ref_sink (widget);
2082
2083   if (tree_column->child)
2084     g_object_unref (tree_column->child);
2085
2086   tree_column->child = widget;
2087   gtk_tree_view_column_update_button (tree_column);
2088   g_object_notify (G_OBJECT (tree_column), "widget");
2089 }
2090
2091 /**
2092  * gtk_tree_view_column_get_widget:
2093  * @tree_column: A #GtkTreeViewColumn.
2094  *
2095  * Returns the #GtkWidget in the button on the column header.
2096  * If a custom widget has not been set then %NULL is returned.
2097  *
2098  * Return value: (transfer none): The #GtkWidget in the column
2099  *     header, or %NULL
2100  **/
2101 GtkWidget *
2102 gtk_tree_view_column_get_widget (GtkTreeViewColumn *tree_column)
2103 {
2104   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2105
2106   return tree_column->child;
2107 }
2108
2109 /**
2110  * gtk_tree_view_column_set_alignment:
2111  * @tree_column: A #GtkTreeViewColumn.
2112  * @xalign: The alignment, which is between [0.0 and 1.0] inclusive.
2113  *
2114  * Sets the alignment of the title or custom widget inside the column header.
2115  * The alignment determines its location inside the button -- 0.0 for left, 0.5
2116  * for center, 1.0 for right.
2117  **/
2118 void
2119 gtk_tree_view_column_set_alignment (GtkTreeViewColumn *tree_column,
2120                                     gfloat             xalign)
2121 {
2122   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2123
2124   xalign = CLAMP (xalign, 0.0, 1.0);
2125
2126   if (tree_column->xalign == xalign)
2127     return;
2128
2129   tree_column->xalign = xalign;
2130   gtk_tree_view_column_update_button (tree_column);
2131   g_object_notify (G_OBJECT (tree_column), "alignment");
2132 }
2133
2134 /**
2135  * gtk_tree_view_column_get_alignment:
2136  * @tree_column: A #GtkTreeViewColumn.
2137  *
2138  * Returns the current x alignment of @tree_column.  This value can range
2139  * between 0.0 and 1.0.
2140  *
2141  * Return value: The current alignent of @tree_column.
2142  **/
2143 gfloat
2144 gtk_tree_view_column_get_alignment (GtkTreeViewColumn *tree_column)
2145 {
2146   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0.5);
2147
2148   return tree_column->xalign;
2149 }
2150
2151 /**
2152  * gtk_tree_view_column_set_reorderable:
2153  * @tree_column: A #GtkTreeViewColumn
2154  * @reorderable: %TRUE, if the column can be reordered.
2155  *
2156  * If @reorderable is %TRUE, then the column can be reordered by the end user
2157  * dragging the header.
2158  **/
2159 void
2160 gtk_tree_view_column_set_reorderable (GtkTreeViewColumn *tree_column,
2161                                       gboolean           reorderable)
2162 {
2163   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2164
2165   /*  if (reorderable)
2166       gtk_tree_view_column_set_clickable (tree_column, TRUE);*/
2167
2168   if (tree_column->reorderable == (reorderable?TRUE:FALSE))
2169     return;
2170
2171   tree_column->reorderable = (reorderable?TRUE:FALSE);
2172   gtk_tree_view_column_update_button (tree_column);
2173   g_object_notify (G_OBJECT (tree_column), "reorderable");
2174 }
2175
2176 /**
2177  * gtk_tree_view_column_get_reorderable:
2178  * @tree_column: A #GtkTreeViewColumn
2179  *
2180  * Returns %TRUE if the @tree_column can be reordered by the user.
2181  *
2182  * Return value: %TRUE if the @tree_column can be reordered by the user.
2183  **/
2184 gboolean
2185 gtk_tree_view_column_get_reorderable (GtkTreeViewColumn *tree_column)
2186 {
2187   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2188
2189   return tree_column->reorderable;
2190 }
2191
2192
2193 /**
2194  * gtk_tree_view_column_set_sort_column_id:
2195  * @tree_column: a #GtkTreeViewColumn
2196  * @sort_column_id: The @sort_column_id of the model to sort on.
2197  *
2198  * Sets the logical @sort_column_id that this column sorts on when this column
2199  * is selected for sorting.  Doing so makes the column header clickable.
2200  **/
2201 void
2202 gtk_tree_view_column_set_sort_column_id (GtkTreeViewColumn *tree_column,
2203                                          gint               sort_column_id)
2204 {
2205   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2206   g_return_if_fail (sort_column_id >= -1);
2207
2208   if (tree_column->sort_column_id == sort_column_id)
2209     return;
2210
2211   tree_column->sort_column_id = sort_column_id;
2212
2213   /* Handle unsetting the id */
2214   if (sort_column_id == -1)
2215     {
2216       GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW (tree_column->tree_view));
2217
2218       if (tree_column->sort_clicked_signal)
2219         {
2220           g_signal_handler_disconnect (tree_column, tree_column->sort_clicked_signal);
2221           tree_column->sort_clicked_signal = 0;
2222         }
2223
2224       if (tree_column->sort_column_changed_signal)
2225         {
2226           g_signal_handler_disconnect (model, tree_column->sort_column_changed_signal);
2227           tree_column->sort_column_changed_signal = 0;
2228         }
2229
2230       gtk_tree_view_column_set_sort_order (tree_column, GTK_SORT_ASCENDING);
2231       gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
2232       gtk_tree_view_column_set_clickable (tree_column, FALSE);
2233       g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2234       return;
2235     }
2236
2237   gtk_tree_view_column_set_clickable (tree_column, TRUE);
2238
2239   if (! tree_column->sort_clicked_signal)
2240     tree_column->sort_clicked_signal = g_signal_connect (tree_column,
2241                                                          "clicked",
2242                                                          G_CALLBACK (gtk_tree_view_column_sort),
2243                                                          NULL);
2244
2245   gtk_tree_view_column_setup_sort_column_id_callback (tree_column);
2246   g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2247 }
2248
2249 /**
2250  * gtk_tree_view_column_get_sort_column_id:
2251  * @tree_column: a #GtkTreeViewColumn
2252  *
2253  * Gets the logical @sort_column_id that the model sorts on when this
2254  * column is selected for sorting.
2255  * See gtk_tree_view_column_set_sort_column_id().
2256  *
2257  * Return value: the current @sort_column_id for this column, or -1 if
2258  *               this column can't be used for sorting.
2259  **/
2260 gint
2261 gtk_tree_view_column_get_sort_column_id (GtkTreeViewColumn *tree_column)
2262 {
2263   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2264
2265   return tree_column->sort_column_id;
2266 }
2267
2268 /**
2269  * gtk_tree_view_column_set_sort_indicator:
2270  * @tree_column: a #GtkTreeViewColumn
2271  * @setting: %TRUE to display an indicator that the column is sorted
2272  *
2273  * Call this function with a @setting of %TRUE to display an arrow in
2274  * the header button indicating the column is sorted. Call
2275  * gtk_tree_view_column_set_sort_order() to change the direction of
2276  * the arrow.
2277  *
2278  **/
2279 void
2280 gtk_tree_view_column_set_sort_indicator (GtkTreeViewColumn     *tree_column,
2281                                          gboolean               setting)
2282 {
2283   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2284
2285   setting = setting != FALSE;
2286
2287   if (setting == tree_column->show_sort_indicator)
2288     return;
2289
2290   tree_column->show_sort_indicator = setting;
2291   gtk_tree_view_column_update_button (tree_column);
2292   g_object_notify (G_OBJECT (tree_column), "sort-indicator");
2293 }
2294
2295 /**
2296  * gtk_tree_view_column_get_sort_indicator:
2297  * @tree_column: a #GtkTreeViewColumn
2298  *
2299  * Gets the value set by gtk_tree_view_column_set_sort_indicator().
2300  *
2301  * Return value: whether the sort indicator arrow is displayed
2302  **/
2303 gboolean
2304 gtk_tree_view_column_get_sort_indicator  (GtkTreeViewColumn     *tree_column)
2305 {
2306   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2307
2308   return tree_column->show_sort_indicator;
2309 }
2310
2311 /**
2312  * gtk_tree_view_column_set_sort_order:
2313  * @tree_column: a #GtkTreeViewColumn
2314  * @order: sort order that the sort indicator should indicate
2315  *
2316  * Changes the appearance of the sort indicator.
2317  *
2318  * This <emphasis>does not</emphasis> actually sort the model.  Use
2319  * gtk_tree_view_column_set_sort_column_id() if you want automatic sorting
2320  * support.  This function is primarily for custom sorting behavior, and should
2321  * be used in conjunction with gtk_tree_sortable_set_sort_column() to do
2322  * that. For custom models, the mechanism will vary.
2323  *
2324  * The sort indicator changes direction to indicate normal sort or reverse sort.
2325  * Note that you must have the sort indicator enabled to see anything when
2326  * calling this function; see gtk_tree_view_column_set_sort_indicator().
2327  **/
2328 void
2329 gtk_tree_view_column_set_sort_order      (GtkTreeViewColumn     *tree_column,
2330                                           GtkSortType            order)
2331 {
2332   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2333
2334   if (order == tree_column->sort_order)
2335     return;
2336
2337   tree_column->sort_order = order;
2338   gtk_tree_view_column_update_button (tree_column);
2339   g_object_notify (G_OBJECT (tree_column), "sort-order");
2340 }
2341
2342 /**
2343  * gtk_tree_view_column_get_sort_order:
2344  * @tree_column: a #GtkTreeViewColumn
2345  *
2346  * Gets the value set by gtk_tree_view_column_set_sort_order().
2347  *
2348  * Return value: the sort order the sort indicator is indicating
2349  **/
2350 GtkSortType
2351 gtk_tree_view_column_get_sort_order      (GtkTreeViewColumn     *tree_column)
2352 {
2353   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2354
2355   return tree_column->sort_order;
2356 }
2357
2358 /**
2359  * gtk_tree_view_column_cell_set_cell_data:
2360  * @tree_column: A #GtkTreeViewColumn.
2361  * @tree_model: The #GtkTreeModel to to get the cell renderers attributes from.
2362  * @iter: The #GtkTreeIter to to get the cell renderer's attributes from.
2363  * @is_expander: %TRUE, if the row has children
2364  * @is_expanded: %TRUE, if the row has visible children
2365  *
2366  * Sets the cell renderer based on the @tree_model and @iter.  That is, for
2367  * every attribute mapping in @tree_column, it will get a value from the set
2368  * column on the @iter, and use that value to set the attribute on the cell
2369  * renderer.  This is used primarily by the #GtkTreeView.
2370  **/
2371 void
2372 gtk_tree_view_column_cell_set_cell_data (GtkTreeViewColumn *tree_column,
2373                                          GtkTreeModel      *tree_model,
2374                                          GtkTreeIter       *iter,
2375                                          gboolean           is_expander,
2376                                          gboolean           is_expanded)
2377 {
2378   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2379
2380   if (tree_model == NULL)
2381     return;
2382
2383   gtk_cell_area_apply_attributes (tree_column->cell_area, tree_model, iter,
2384                                   is_expander, is_expanded);
2385 }
2386
2387 /**
2388  * gtk_tree_view_column_cell_get_size:
2389  * @tree_column: A #GtkTreeViewColumn.
2390  * @cell_area: (allow-none): The area a cell in the column will be allocated, or %NULL
2391  * @x_offset: (allow-none): location to return x offset of a cell relative to @cell_area, or %NULL
2392  * @y_offset: (allow-none): location to return y offset of a cell relative to @cell_area, or %NULL
2393  * @width: (allow-none): location to return width needed to render a cell, or %NULL
2394  * @height: (allow-none): location to return height needed to render a cell, or %NULL
2395  *
2396  * Obtains the width and height needed to render the column.  This is used
2397  * primarily by the #GtkTreeView.
2398  **/
2399 void
2400 gtk_tree_view_column_cell_get_size (GtkTreeViewColumn  *tree_column,
2401                                     const GdkRectangle *cell_area,
2402                                     gint               *x_offset,
2403                                     gint               *y_offset,
2404                                     gint               *width,
2405                                     gint               *height)
2406 {
2407   int focus_line_width;
2408
2409   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2410
2411   if (height)
2412     * height = 0;
2413   if (width)
2414     * width = 0;
2415
2416   /* FIXME: This is a temporary hack to get things to allocate mostly right.
2417    *
2418    * We will add twice the focus-line-width to the for-width
2419    * parameter below.  If we do not do this, the height returned is the
2420    * height for two lines of text instead of one.  It feels like some lines
2421    * get less width than expected (due to subtraction of focus_line_width?)
2422    * and will unnecessarily wrap.
2423    */
2424   gtk_widget_style_get (tree_column->tree_view,
2425                         "focus-line-width", &focus_line_width,
2426                         NULL);
2427
2428   g_signal_handler_block (tree_column->cell_area_context,
2429                           tree_column->context_changed_signal);
2430
2431   gtk_cell_area_get_preferred_width (tree_column->cell_area,
2432                                      tree_column->cell_area_context,
2433                                      tree_column->tree_view,
2434                                      width, NULL);
2435   gtk_cell_area_get_preferred_height_for_width (tree_column->cell_area,
2436                                                 tree_column->cell_area_context,
2437                                                 tree_column->tree_view,
2438                                                 *width + focus_line_width * 2,
2439                                                 height,
2440                                                 NULL);
2441
2442   g_signal_handler_unblock (tree_column->cell_area_context,
2443                             tree_column->context_changed_signal);
2444
2445 }
2446
2447 /**
2448  * gtk_tree_view_column_cell_render:
2449  * @tree_column: A #GtkTreeViewColumn.
2450  * @cr: cairo context to draw to
2451  * @background_area: entire cell area (including tree expanders and maybe padding on the sides)
2452  * @cell_area: area normally rendered by a cell renderer
2453  * @flags: flags that affect rendering
2454  *
2455  * Renders the cell contained by #tree_column. This is used primarily by the
2456  * #GtkTreeView.
2457  **/
2458 void
2459 _gtk_tree_view_column_cell_render (GtkTreeViewColumn  *tree_column,
2460                                    cairo_t            *cr,
2461                                    const GdkRectangle *background_area,
2462                                    const GdkRectangle *cell_area,
2463                                    guint               flags,
2464                                    gboolean            draw_focus)
2465 {
2466   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2467   g_return_if_fail (cr != NULL);
2468   g_return_if_fail (background_area != NULL);
2469   g_return_if_fail (cell_area != NULL);
2470
2471   cairo_save (cr);
2472
2473   gtk_cell_area_render (tree_column->cell_area, tree_column->cell_area_context,
2474                         tree_column->tree_view, cr,
2475                         background_area, cell_area, flags,
2476                         draw_focus);
2477
2478   cairo_restore (cr);
2479 }
2480
2481 gboolean
2482 _gtk_tree_view_column_cell_event (GtkTreeViewColumn  *tree_column,
2483                                   GtkCellEditable   **editable_widget,
2484                                   GdkEvent           *event,
2485                                   gchar              *path_string,
2486                                   const GdkRectangle *background_area,
2487                                   const GdkRectangle *cell_area,
2488                                   guint               flags)
2489 {
2490   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2491
2492   /* FIXME: Should we pass background area here as well?
2493    * What will happen to the path_string and editable widget
2494    * variables?
2495    */
2496   return gtk_cell_area_event (tree_column->cell_area,
2497                               tree_column->cell_area_context,
2498                               tree_column->tree_view,
2499                               event,
2500                               cell_area,
2501                               flags);
2502 }
2503
2504 void
2505 _gtk_tree_view_column_get_focus_area (GtkTreeViewColumn  *tree_column,
2506                                       const GdkRectangle *background_area,
2507                                       const GdkRectangle *cell_area,
2508                                       GdkRectangle       *focus_area)
2509 {
2510   /* FIXME */
2511 #if 0
2512   gtk_tree_view_column_cell_process_action (tree_column,
2513                                             NULL,
2514                                             background_area,
2515                                             cell_area,
2516                                             0,
2517                                             CELL_ACTION_FOCUS,
2518                                             focus_area,
2519                                             NULL, NULL, NULL);
2520 #endif
2521 }
2522
2523
2524 gboolean
2525 _gtk_tree_view_column_cell_focus (GtkTreeViewColumn *tree_column,
2526                                   gint               count,
2527                                   gboolean           left,
2528                                   gboolean           right)
2529 {
2530   gboolean rtl;
2531   GtkDirectionType direction = 0;
2532
2533   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_column->tree_view)) == GTK_TEXT_DIR_RTL;
2534
2535   switch (count)
2536     {
2537       case -1:
2538         direction = GTK_DIR_LEFT;
2539         break;
2540
2541       case 1:
2542         direction = GTK_DIR_RIGHT;
2543         break;
2544     }
2545
2546   /* if we are the current focus column and have multiple editable cells,
2547    * try to select the next one, else move the focus to the next column
2548    */
2549   if (GTK_TREE_VIEW (tree_column->tree_view)->priv->focus_column == tree_column)
2550     {
2551       if (gtk_cell_area_focus (tree_column->cell_area, direction))
2552         /* Focus stays in this column, so we are done */
2553         return TRUE;
2554
2555       /* FIXME: RTL support for the following: */
2556       if (count == -1 && !left)
2557         {
2558           direction = GTK_DIR_RIGHT;
2559           gtk_cell_area_focus (tree_column->cell_area, direction);
2560         }
2561       else if (count == 1 && !right)
2562         {
2563           direction = GTK_DIR_LEFT;
2564           gtk_cell_area_focus (tree_column->cell_area, direction);
2565         }
2566
2567       return FALSE;
2568     }
2569
2570   return gtk_cell_area_focus (tree_column->cell_area, direction);
2571 }
2572
2573 /**
2574  * gtk_tree_view_column_cell_is_visible:
2575  * @tree_column: A #GtkTreeViewColumn
2576  *
2577  * Returns %TRUE if any of the cells packed into the @tree_column are visible.
2578  * For this to be meaningful, you must first initialize the cells with
2579  * gtk_tree_view_column_cell_set_cell_data()
2580  *
2581  * Return value: %TRUE, if any of the cells packed into the @tree_column are currently visible
2582  **/
2583 gboolean
2584 gtk_tree_view_column_cell_is_visible (GtkTreeViewColumn *tree_column)
2585 {
2586   GList *list;
2587   GList *cells;
2588
2589   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2590
2591   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (tree_column->cell_area));
2592   for (list = cells; list; list = list->next)
2593     {
2594       if (gtk_cell_renderer_get_visible (list->data))
2595         {
2596           g_list_free (cells);
2597           return TRUE;
2598         }
2599     }
2600
2601   g_list_free (cells);
2602
2603   return FALSE;
2604 }
2605
2606 /**
2607  * gtk_tree_view_column_focus_cell:
2608  * @tree_column: A #GtkTreeViewColumn
2609  * @cell: A #GtkCellRenderer
2610  *
2611  * Sets the current keyboard focus to be at @cell, if the column contains
2612  * 2 or more editable and activatable cells.
2613  *
2614  * Since: 2.2
2615  **/
2616 void
2617 gtk_tree_view_column_focus_cell (GtkTreeViewColumn *tree_column,
2618                                  GtkCellRenderer   *cell)
2619 {
2620   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2621   g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
2622
2623   gtk_cell_area_set_focus_cell (tree_column->cell_area, cell);
2624 }
2625
2626 void
2627 _gtk_tree_view_column_cell_set_dirty (GtkTreeViewColumn *tree_column,
2628                                       gboolean           install_handler)
2629 {
2630   tree_column->dirty = TRUE;
2631   tree_column->requested_width = -1;
2632   tree_column->width = 0;
2633
2634   if (tree_column->tree_view &&
2635       gtk_widget_get_realized (tree_column->tree_view))
2636     {
2637       if (install_handler)
2638         _gtk_tree_view_install_mark_rows_col_dirty (GTK_TREE_VIEW (tree_column->tree_view));
2639       else
2640         GTK_TREE_VIEW (tree_column->tree_view)->priv->mark_rows_col_dirty = TRUE;
2641       gtk_widget_queue_resize (tree_column->tree_view);
2642     }
2643 }
2644
2645 /**
2646  * gtk_tree_view_column_cell_get_position:
2647  * @tree_column: a #GtkTreeViewColumn
2648  * @cell_renderer: a #GtkCellRenderer
2649  * @start_pos: return location for the horizontal position of @cell within
2650  *            @tree_column, may be %NULL
2651  * @width: return location for the width of @cell, may be %NULL
2652  *
2653  * Obtains the horizontal position and size of a cell in a column. If the
2654  * cell is not found in the column, @start_pos and @width are not changed and
2655  * %FALSE is returned.
2656  *
2657  * Return value: %TRUE if @cell belongs to @tree_column.
2658  */
2659 gboolean
2660 gtk_tree_view_column_cell_get_position (GtkTreeViewColumn *tree_column,
2661                                         GtkCellRenderer   *cell_renderer,
2662                                         gint              *start_pos,
2663                                         gint              *width)
2664 {
2665   GdkRectangle zero_cell_area = { 0, };
2666   GdkRectangle allocation;
2667
2668   /* FIXME: Could use a boolean return value for invalid cells */
2669   gtk_cell_area_get_cell_allocation (tree_column->cell_area,
2670                                      tree_column->cell_area_context,
2671                                      tree_column->tree_view,
2672                                      cell_renderer,
2673                                      &zero_cell_area,
2674                                      &allocation);
2675
2676   if (start_pos)
2677     *start_pos = allocation.x;
2678   if (width)
2679     *width = allocation.width;
2680
2681   return TRUE;
2682 }
2683
2684 /**
2685  * gtk_tree_view_column_queue_resize:
2686  * @tree_column: A #GtkTreeViewColumn
2687  *
2688  * Flags the column, and the cell renderers added to this column, to have
2689  * their sizes renegotiated.
2690  *
2691  * Since: 2.8
2692  **/
2693 void
2694 gtk_tree_view_column_queue_resize (GtkTreeViewColumn *tree_column)
2695 {
2696   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2697
2698   if (tree_column->tree_view)
2699     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
2700 }
2701
2702 /**
2703  * gtk_tree_view_column_get_tree_view:
2704  * @tree_column: A #GtkTreeViewColumn
2705  *
2706  * Returns the #GtkTreeView wherein @tree_column has been inserted.
2707  * If @column is currently not inserted in any tree view, %NULL is
2708  * returned.
2709  *
2710  * Return value: (transfer none): The tree view wherein @column has
2711  *     been inserted if any, %NULL otherwise.
2712  *
2713  * Since: 2.12
2714  */
2715 GtkWidget *
2716 gtk_tree_view_column_get_tree_view (GtkTreeViewColumn *tree_column)
2717 {
2718   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2719
2720   return tree_column->tree_view;
2721 }