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 /* Type methods */
  60 static void gtk_tree_view_column_cell_layout_init              (GtkCellLayoutIface      *iface);
  61
  62 /* GObject methods */
  63 static void gtk_tree_view_column_set_property                  (GObject                 *object,
  64                                                                 guint                    prop_id,
  65                                                                 const GValue            *value,
  66                                                                 GParamSpec              *pspec);
  67 static void gtk_tree_view_column_get_property                  (GObject                 *object,
  68                                                                 guint                    prop_id,
  69                                                                 GValue                  *value,
  70                                                                 GParamSpec              *pspec);
  71 static void gtk_tree_view_column_finalize                      (GObject                 *object);
  72 static void gtk_tree_view_column_dispose                       (GObject                 *object);
  73 static GObject *gtk_tree_view_column_constructor               (GType                    type,
  74                                                                 guint                    n_construct_properties,
  75                                                                 GObjectConstructParam   *construct_properties);
  76
  77 /* GtkCellLayout implementation */
  78 static GtkCellArea *gtk_tree_view_column_cell_layout_get_area  (GtkCellLayout           *cell_layout);
  79
  80 /* Button handling code */
  81 static void gtk_tree_view_column_create_button                 (GtkTreeViewColumn       *tree_column);
  82 static void gtk_tree_view_column_update_button                 (GtkTreeViewColumn       *tree_column);
  83
  84 /* Button signal handlers */
  85 static gint gtk_tree_view_column_button_event                  (GtkWidget               *widget,
  86                                                                 GdkEvent                *event,
  87                                                                 gpointer                 data);
  88 static void gtk_tree_view_column_button_clicked                (GtkWidget               *widget,
  89                                                                 gpointer                 data);
  90 static gboolean gtk_tree_view_column_mnemonic_activate         (GtkWidget *widget,
  91                                                                 gboolean   group_cycling,
  92                                                                 gpointer   data);
  93
  94 /* Property handlers */
  95 static void gtk_tree_view_model_sort_column_changed            (GtkTreeSortable         *sortable,
  96                                                                 GtkTreeViewColumn       *tree_column);
  97
  98 /* GtkCellArea/GtkCellAreaContext callbacks */
  99 static void gtk_tree_view_column_context_changed               (GtkCellAreaContext      *context,
 100                                                                 GParamSpec              *pspec,
 101                                                                 GtkTreeViewColumn       *tree_column);
 102 static void gtk_tree_view_column_add_editable_callback         (GtkCellArea             *area,
 103                                                                 GtkCellRenderer         *renderer,
 104                                                                 GtkCellEditable         *edit_widget,
 105                                                                 GdkRectangle            *cell_area,
 106                                                                 const gchar             *path_string,
 107                                                                 gpointer                 user_data);
 108 static void gtk_tree_view_column_remove_editable_callback      (GtkCellArea             *area,
 109                                                                 GtkCellRenderer         *renderer,
 110                                                                 GtkCellEditable         *edit_widget,
 111                                                                 gpointer                 user_data);
 112
 113 /* Internal functions */
 114 static void gtk_tree_view_column_sort                          (GtkTreeViewColumn       *tree_column,
 115                                                                 gpointer                 data);
 116 static void gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn       *tree_column);
 117 static void gtk_tree_view_column_set_attributesv               (GtkTreeViewColumn       *tree_column,
 118                                                                 GtkCellRenderer         *cell_renderer,
 119                                                                 va_list                  args);
 120
 121 /* GtkBuildable implementation */
 122 static void gtk_tree_view_column_buildable_init                 (GtkBuildableIface     *iface);
 123
 124
 125 struct _GtkTreeViewColumnPrivate
 126 {
 127   GtkWidget *tree_view;
 128   GtkWidget *button;
 129   GtkWidget *child;
 130   GtkWidget *arrow;
 131   GtkWidget *alignment;
 132   GdkWindow *window;
 133   gfloat xalign;
 134   gulong property_changed_signal;
 135
 136   /* Sizing fields */
 137   /* see gtk+/doc/tree-column-sizing.txt for more information on them */
 138   GtkTreeViewColumnSizing column_type;
 139   gint requested_width;
 140   gint resized_width;
 141   gint width;
 142   gint fixed_width;
 143   gint min_width;
 144   gint max_width;
 145
 146   /* dragging columns */
 147   gint drag_x;
 148   gint drag_y;
 149
 150   gchar *title;
 151
 152   /* Sorting */
 153   gulong      sort_clicked_signal;
 154   gulong      sort_column_changed_signal;
 155   gint        sort_column_id;
 156   GtkSortType sort_order;
 157
 158   /* Cell area */
 159   GtkCellArea        *cell_area;
 160   GtkCellAreaContext *cell_area_context;
 161   gulong              add_editable_signal;
 162   gulong              remove_editable_signal;
 163   gulong              context_changed_signal;
 164
 165   /* Flags */
 166   guint visible             : 1;
 167   guint resizable           : 1;
 168   guint clickable           : 1;
 169   guint dirty               : 1;
 170   guint show_sort_indicator : 1;
 171   guint maybe_reordered     : 1;
 172   guint reorderable         : 1;
 173   guint use_resized_width   : 1;
 174   guint expand              : 1;
 175 };
 176
 177 enum
 178 {
 179   PROP_0,
 180   PROP_VISIBLE,
 181   PROP_RESIZABLE,
 182   PROP_WIDTH,
 183   PROP_SPACING,
 184   PROP_SIZING,
 185   PROP_FIXED_WIDTH,
 186   PROP_MIN_WIDTH,
 187   PROP_MAX_WIDTH,
 188   PROP_TITLE,
 189   PROP_EXPAND,
 190   PROP_CLICKABLE,
 191   PROP_WIDGET,
 192   PROP_ALIGNMENT,
 193   PROP_REORDERABLE,
 194   PROP_SORT_INDICATOR,
 195   PROP_SORT_ORDER,
 196   PROP_SORT_COLUMN_ID
 197 };
 198
 199 enum
 200 {
 201   CLICKED,
 202   LAST_SIGNAL
 203 };
 204
 205 static guint tree_column_signals[LAST_SIGNAL] = { 0 };
 206
 207 G_DEFINE_TYPE_WITH_CODE (GtkTreeViewColumn, gtk_tree_view_column, G_TYPE_INITIALLY_UNOWNED,
 208                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 209                                                 gtk_tree_view_column_cell_layout_init)
 210                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 211                                                 gtk_tree_view_column_buildable_init))
 212
 213
 214 static void
 215 gtk_tree_view_column_class_init (GtkTreeViewColumnClass *class)
 216 {
 217   GObjectClass *object_class;
 218
 219   object_class = (GObjectClass*) class;
 220
 221   class->clicked = NULL;
 222
 223   object_class->constructor = gtk_tree_view_column_constructor;
 224   object_class->finalize = gtk_tree_view_column_finalize;
 225   object_class->dispose = gtk_tree_view_column_dispose;
 226   object_class->set_property = gtk_tree_view_column_set_property;
 227   object_class->get_property = gtk_tree_view_column_get_property;
 228
 229   tree_column_signals[CLICKED] =
 230     g_signal_new (I_("clicked"),
 231                   G_OBJECT_CLASS_TYPE (object_class),
 232                   G_SIGNAL_RUN_LAST,
 233                   G_STRUCT_OFFSET (GtkTreeViewColumnClass, clicked),
 234                   NULL, NULL,
 235                   _gtk_marshal_VOID__VOID,
 236                   G_TYPE_NONE, 0);
 237
 238   g_object_class_install_property (object_class,
 239                                    PROP_VISIBLE,
 240                                    g_param_spec_boolean ("visible",
 241                                                         P_("Visible"),
 242                                                         P_("Whether to display the column"),
 243                                                          TRUE,
 244                                                          GTK_PARAM_READWRITE));
 245
 246   g_object_class_install_property (object_class,
 247                                    PROP_RESIZABLE,
 248                                    g_param_spec_boolean ("resizable",
 249                                                          P_("Resizable"),
 250                                                          P_("Column is user-resizable"),
 251                                                          FALSE,
 252                                                          GTK_PARAM_READWRITE));
 253
 254   g_object_class_install_property (object_class,
 255                                    PROP_WIDTH,
 256                                    g_param_spec_int ("width",
 257                                                      P_("Width"),
 258                                                      P_("Current width of the column"),
 259                                                      0,
 260                                                      G_MAXINT,
 261                                                      0,
 262                                                      GTK_PARAM_READABLE));
 263   g_object_class_install_property (object_class,
 264                                    PROP_SPACING,
 265                                    g_param_spec_int ("spacing",
 266                                                      P_("Spacing"),
 267                                                      P_("Space which is inserted between cells"),
 268                                                      0,
 269                                                      G_MAXINT,
 270                                                      0,
 271                                                      GTK_PARAM_READWRITE));
 272   g_object_class_install_property (object_class,
 273                                    PROP_SIZING,
 274                                    g_param_spec_enum ("sizing",
 275                                                       P_("Sizing"),
 276                                                       P_("Resize mode of the column"),
 277                                                       GTK_TYPE_TREE_VIEW_COLUMN_SIZING,
 278                                                       GTK_TREE_VIEW_COLUMN_GROW_ONLY,
 279                                                       GTK_PARAM_READWRITE));
 280
 281   g_object_class_install_property (object_class,
 282                                    PROP_FIXED_WIDTH,
 283                                    g_param_spec_int ("fixed-width",
 284                                                      P_("Fixed Width"),
 285                                                      P_("Current fixed width of the column"),
 286                                                      1,
 287                                                      G_MAXINT,
 288                                                      1, /* not useful */
 289                                                      GTK_PARAM_READWRITE));
 290
 291   g_object_class_install_property (object_class,
 292                                    PROP_MIN_WIDTH,
 293                                    g_param_spec_int ("min-width",
 294                                                      P_("Minimum Width"),
 295                                                      P_("Minimum allowed width of the column"),
 296                                                      -1,
 297                                                      G_MAXINT,
 298                                                      -1,
 299                                                      GTK_PARAM_READWRITE));
 300
 301   g_object_class_install_property (object_class,
 302                                    PROP_MAX_WIDTH,
 303                                    g_param_spec_int ("max-width",
 304                                                      P_("Maximum Width"),
 305                                                      P_("Maximum allowed width of the column"),
 306                                                      -1,
 307                                                      G_MAXINT,
 308                                                      -1,
 309                                                      GTK_PARAM_READWRITE));
 310
 311   g_object_class_install_property (object_class,
 312                                    PROP_TITLE,
 313                                    g_param_spec_string ("title",
 314                                                         P_("Title"),
 315                                                         P_("Title to appear in column header"),
 316                                                         "",
 317                                                         GTK_PARAM_READWRITE));
 318
 319   g_object_class_install_property (object_class,
 320                                    PROP_EXPAND,
 321                                    g_param_spec_boolean ("expand",
 322                                                          P_("Expand"),
 323                                                          P_("Column gets share of extra width allocated to the widget"),
 324                                                          FALSE,
 325                                                          GTK_PARAM_READWRITE));
 326
 327   g_object_class_install_property (object_class,
 328                                    PROP_CLICKABLE,
 329                                    g_param_spec_boolean ("clickable",
 330                                                         P_("Clickable"),
 331                                                         P_("Whether the header can be clicked"),
 332                                                          FALSE,
 333                                                          GTK_PARAM_READWRITE));
 334
 335
 336   g_object_class_install_property (object_class,
 337                                    PROP_WIDGET,
 338                                    g_param_spec_object ("widget",
 339                                                         P_("Widget"),
 340                                                         P_("Widget to put in column header button instead of column title"),
 341                                                         GTK_TYPE_WIDGET,
 342                                                         GTK_PARAM_READWRITE));
 343
 344   g_object_class_install_property (object_class,
 345                                    PROP_ALIGNMENT,
 346                                    g_param_spec_float ("alignment",
 347                                                        P_("Alignment"),
 348                                                        P_("X Alignment of the column header text or widget"),
 349                                                        0.0,
 350                                                        1.0,
 351                                                        0.0,
 352                                                        GTK_PARAM_READWRITE));
 353
 354   g_object_class_install_property (object_class,
 355                                    PROP_REORDERABLE,
 356                                    g_param_spec_boolean ("reorderable",
 357                                                          P_("Reorderable"),
 358                                                          P_("Whether the column can be reordered around the headers"),
 359                                                          FALSE,
 360                                                          GTK_PARAM_READWRITE));
 361
 362   g_object_class_install_property (object_class,
 363                                    PROP_SORT_INDICATOR,
 364                                    g_param_spec_boolean ("sort-indicator",
 365                                                         P_("Sort indicator"),
 366                                                         P_("Whether to show a sort indicator"),
 367                                                          FALSE,
 368                                                          GTK_PARAM_READWRITE));
 369
 370   g_object_class_install_property (object_class,
 371                                    PROP_SORT_ORDER,
 372                                    g_param_spec_enum ("sort-order",
 373                                                       P_("Sort order"),
 374                                                       P_("Sort direction the sort indicator should indicate"),
 375                                                       GTK_TYPE_SORT_TYPE,
 376                                                       GTK_SORT_ASCENDING,
 377                                                       GTK_PARAM_READWRITE));
 378
 379   /**
 380    * GtkTreeViewColumn:sort-column-id:
 381    *
 382    * Logical sort column ID this column sorts on when selected for sorting. Setting the sort column ID makes the column header
 383    * clickable. Set to %-1 to make the column unsortable.
 384    *
 385    * Since: 2.18
 386    **/
 387   g_object_class_install_property (object_class,
 388                                    PROP_SORT_COLUMN_ID,
 389                                    g_param_spec_int ("sort-column-id",
 390                                                      P_("Sort column ID"),
 391                                                      P_("Logical sort column ID this column sorts on when selected for sorting"),
 392                                                      -1,
 393                                                      G_MAXINT,
 394                                                      -1,
 395                                                      GTK_PARAM_READWRITE));
 396
 397   g_type_class_add_private (class, sizeof (GtkTreeViewColumnPrivate));
 398 }
 399
 400 static void
 401 gtk_tree_view_column_custom_tag_end (GtkBuildable *buildable,
 402                                      GtkBuilder   *builder,
 403                                      GObject      *child,
 404                                      const gchar  *tagname,
 405                                      gpointer     *data)
 406 {
 407   /* Just ignore the boolean return from here */
 408   _gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data);
 409 }
 410
 411 static void
 412 gtk_tree_view_column_buildable_init (GtkBuildableIface *iface)
 413 {
 414   iface->add_child = _gtk_cell_layout_buildable_add_child;
 415   iface->custom_tag_start = _gtk_cell_layout_buildable_custom_tag_start;
 416   iface->custom_tag_end = gtk_tree_view_column_custom_tag_end;
 417 }
 418
 419 static void
 420 gtk_tree_view_column_cell_layout_init (GtkCellLayoutIface *iface)
 421 {
 422   iface->get_area = gtk_tree_view_column_cell_layout_get_area;
 423 }
 424
 425 static void
 426 gtk_tree_view_column_init (GtkTreeViewColumn *tree_column)
 427 {
 428   GtkTreeViewColumnPrivate *priv;
 429
 430   tree_column->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_column,
 431                                                    GTK_TYPE_TREE_VIEW_COLUMN,
 432                                                    GtkTreeViewColumnPrivate);
 433   priv = tree_column->priv;
 434
 435   priv->button = NULL;
 436   priv->xalign = 0.0;
 437   priv->width = 0;
 438   priv->requested_width = -1;
 439   priv->min_width = -1;
 440   priv->max_width = -1;
 441   priv->resized_width = 0;
 442   priv->column_type = GTK_TREE_VIEW_COLUMN_GROW_ONLY;
 443   priv->visible = TRUE;
 444   priv->resizable = FALSE;
 445   priv->expand = FALSE;
 446   priv->clickable = FALSE;
 447   priv->dirty = TRUE;
 448   priv->sort_order = GTK_SORT_ASCENDING;
 449   priv->show_sort_indicator = FALSE;
 450   priv->property_changed_signal = 0;
 451   priv->sort_clicked_signal = 0;
 452   priv->sort_column_changed_signal = 0;
 453   priv->sort_column_id = -1;
 454   priv->reorderable = FALSE;
 455   priv->maybe_reordered = FALSE;
 456   priv->fixed_width = 1;
 457   priv->use_resized_width = FALSE;
 458   priv->title = g_strdup ("");
 459
 460   priv->cell_area = gtk_cell_area_box_new ();
 461   gtk_cell_area_set_style_detail (priv->cell_area, "treeview");
 462   priv->cell_area_context = gtk_cell_area_create_context (priv->cell_area);
 463
 464   priv->context_changed_signal =
 465     g_signal_connect (priv->cell_area_context, "notify",
 466                       G_CALLBACK (gtk_tree_view_column_context_changed), tree_column);
 467
 468   return object;
 469 }
 470
 471 static void
 472 gtk_tree_view_column_dispose (GObject *object)
 473 {
 474   GtkTreeViewColumn        *tree_column = (GtkTreeViewColumn *) object;
 475   GtkTreeViewColumnPrivate *priv        = tree_column->priv;
 476
 477   if (priv->cell_area_context)
 478     {
 479       g_signal_handler_disconnect (priv->cell_area_context,
 480                                    priv->context_changed_signal);
 481
 482       g_object_unref (priv->cell_area_context);
 483
 484       priv->cell_area_context = NULL;
 485       priv->context_changed_signal = 0;
 486     }
 487
 488   if (priv->cell_area)
 489     {
 490       g_object_unref (priv->cell_area);
 491       priv->cell_area = NULL;
 492     }
 493
 494   if (priv->child)
 495     {
 496       g_object_unref (priv->child);
 497       priv->child = NULL;
 498     }
 499
 500   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->dispose (object);
 501 }
 502
 503 static void
 504 gtk_tree_view_column_finalize (GObject *object)
 505 {
 506   GtkTreeViewColumn        *tree_column = (GtkTreeViewColumn *) object;
 507   GtkTreeViewColumnPrivate *priv        = tree_column->priv;
 508
 509   g_free (priv->title);
 510
 511   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->finalize (object);
 512 }
 513
 514 static void
 515 gtk_tree_view_column_set_property (GObject         *object,
 516                                    guint            prop_id,
 517                                    const GValue    *value,
 518                                    GParamSpec      *pspec)
 519 {
 520   GtkTreeViewColumn *tree_column;
 521   GtkCellArea       *area;
 522
 523   tree_column = GTK_TREE_VIEW_COLUMN (object);
 524
 525   switch (prop_id)
 526     {
 527     case PROP_VISIBLE:
 528       gtk_tree_view_column_set_visible (tree_column,
 529                                         g_value_get_boolean (value));
 530       break;
 531
 532     case PROP_RESIZABLE:
 533       gtk_tree_view_column_set_resizable (tree_column,
 534                                           g_value_get_boolean (value));
 535       break;
 536
 537     case PROP_SIZING:
 538       gtk_tree_view_column_set_sizing (tree_column,
 539                                        g_value_get_enum (value));
 540       break;
 541
 542     case PROP_FIXED_WIDTH:
 543       gtk_tree_view_column_set_fixed_width (tree_column,
 544                                             g_value_get_int (value));
 545       break;
 546
 547     case PROP_MIN_WIDTH:
 548       gtk_tree_view_column_set_min_width (tree_column,
 549                                           g_value_get_int (value));
 550       break;
 551
 552     case PROP_MAX_WIDTH:
 553       gtk_tree_view_column_set_max_width (tree_column,
 554                                           g_value_get_int (value));
 555       break;
 556
 557     case PROP_SPACING:
 558       gtk_tree_view_column_set_spacing (tree_column,
 559                                         g_value_get_int (value));
 560       break;
 561
 562     case PROP_TITLE:
 563       gtk_tree_view_column_set_title (tree_column,
 564                                       g_value_get_string (value));
 565       break;
 566
 567     case PROP_EXPAND:
 568       gtk_tree_view_column_set_expand (tree_column,
 569                                        g_value_get_boolean (value));
 570       break;
 571
 572     case PROP_CLICKABLE:
 573       gtk_tree_view_column_set_clickable (tree_column,
 574                                           g_value_get_boolean (value));
 575       break;
 576
 577     case PROP_WIDGET:
 578       gtk_tree_view_column_set_widget (tree_column,
 579                                        (GtkWidget*) g_value_get_object (value));
 580       break;
 581
 582     case PROP_ALIGNMENT:
 583       gtk_tree_view_column_set_alignment (tree_column,
 584                                           g_value_get_float (value));
 585       break;
 586
 587     case PROP_REORDERABLE:
 588       gtk_tree_view_column_set_reorderable (tree_column,
 589                                             g_value_get_boolean (value));
 590       break;
 591
 592     case PROP_SORT_INDICATOR:
 593       gtk_tree_view_column_set_sort_indicator (tree_column,
 594                                                g_value_get_boolean (value));
 595       break;
 596
 597     case PROP_SORT_ORDER:
 598       gtk_tree_view_column_set_sort_order (tree_column,
 599                                            g_value_get_enum (value));
 600       break;
 601
 602     case PROP_SORT_COLUMN_ID:
 603       gtk_tree_view_column_set_sort_column_id (tree_column,
 604                                                g_value_get_int (value));
 605       break;
 606
 607     case PROP_CELL_AREA:
 608       /* Construct-only, can only be assigned once */
 609       area = g_value_get_object (value);
 610
 611       if (area)
 612         tree_column->cell_area = g_object_ref_sink (area);
 613       break;
 614
 615     default:
 616       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 617       break;
 618     }
 619 }
 620
 621 static void
 622 gtk_tree_view_column_get_property (GObject         *object,
 623                                    guint            prop_id,
 624                                    GValue          *value,
 625                                    GParamSpec      *pspec)
 626 {
 627   GtkTreeViewColumn *tree_column;
 628
 629   tree_column = GTK_TREE_VIEW_COLUMN (object);
 630
 631   switch (prop_id)
 632     {
 633     case PROP_VISIBLE:
 634       g_value_set_boolean (value,
 635                            gtk_tree_view_column_get_visible (tree_column));
 636       break;
 637
 638     case PROP_RESIZABLE:
 639       g_value_set_boolean (value,
 640                            gtk_tree_view_column_get_resizable (tree_column));
 641       break;
 642
 643     case PROP_WIDTH:
 644       g_value_set_int (value,
 645                        gtk_tree_view_column_get_width (tree_column));
 646       break;
 647
 648     case PROP_SPACING:
 649       g_value_set_int (value,
 650                        gtk_tree_view_column_get_spacing (tree_column));
 651       break;
 652
 653     case PROP_SIZING:
 654       g_value_set_enum (value,
 655                         gtk_tree_view_column_get_sizing (tree_column));
 656       break;
 657
 658     case PROP_FIXED_WIDTH:
 659       g_value_set_int (value,
 660                        gtk_tree_view_column_get_fixed_width (tree_column));
 661       break;
 662
 663     case PROP_MIN_WIDTH:
 664       g_value_set_int (value,
 665                        gtk_tree_view_column_get_min_width (tree_column));
 666       break;
 667
 668     case PROP_MAX_WIDTH:
 669       g_value_set_int (value,
 670                        gtk_tree_view_column_get_max_width (tree_column));
 671       break;
 672
 673     case PROP_TITLE:
 674       g_value_set_string (value,
 675                           gtk_tree_view_column_get_title (tree_column));
 676       break;
 677
 678     case PROP_EXPAND:
 679       g_value_set_boolean (value,
 680                           gtk_tree_view_column_get_expand (tree_column));
 681       break;
 682
 683     case PROP_CLICKABLE:
 684       g_value_set_boolean (value,
 685                            gtk_tree_view_column_get_clickable (tree_column));
 686       break;
 687
 688     case PROP_WIDGET:
 689       g_value_set_object (value,
 690                           (GObject*) gtk_tree_view_column_get_widget (tree_column));
 691       break;
 692
 693     case PROP_ALIGNMENT:
 694       g_value_set_float (value,
 695                          gtk_tree_view_column_get_alignment (tree_column));
 696       break;
 697
 698     case PROP_REORDERABLE:
 699       g_value_set_boolean (value,
 700                            gtk_tree_view_column_get_reorderable (tree_column));
 701       break;
 702
 703     case PROP_SORT_INDICATOR:
 704       g_value_set_boolean (value,
 705                            gtk_tree_view_column_get_sort_indicator (tree_column));
 706       break;
 707
 708     case PROP_SORT_ORDER:
 709       g_value_set_enum (value,
 710                         gtk_tree_view_column_get_sort_order (tree_column));
 711       break;
 712
 713     case PROP_SORT_COLUMN_ID:
 714       g_value_set_int (value,
 715                        gtk_tree_view_column_get_sort_column_id (tree_column));
 716       break;
 717
 718     case PROP_CELL_AREA:
 719       g_value_set_object (value, tree_column->cell_area);
 720       break;
 721
 722     default:
 723       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 724       break;
 725     }
 726 }
 727
 728 /* Implementation of GtkCellLayout interface
 729  */
 730 static GtkCellArea *
 731 gtk_tree_view_column_cell_layout_get_area (GtkCellLayout   *cell_layout)
 732 {
 733   GtkTreeViewColumn        *column = GTK_TREE_VIEW_COLUMN (cell_layout);
 734   GtkTreeViewColumnPrivate *priv   = column->priv;
 735
 736   return priv->cell_area;
 737 }
 738
 739 /* Button handling code
 740  */
 741 static void
 742 gtk_tree_view_column_create_button (GtkTreeViewColumn *tree_column)
 743 {
 744   GtkTreeViewColumnPrivate *priv = tree_column->priv;
 745   GtkTreeView *tree_view;
 746   GtkWidget *child;
 747   GtkWidget *hbox;
 748
 749   tree_view = (GtkTreeView *) priv->tree_view;
 750
 751   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
 752   g_return_if_fail (priv->button == NULL);
 753
 754   gtk_widget_push_composite_child ();
 755   priv->button = gtk_button_new ();
 756   gtk_widget_add_events (priv->button, GDK_POINTER_MOTION_MASK);
 757   gtk_widget_pop_composite_child ();
 758
 759   /* make sure we own a reference to it as well. */
 760   if (tree_view->priv->header_window)
 761     gtk_widget_set_parent_window (priv->button, tree_view->priv->header_window);
 762   gtk_widget_set_parent (priv->button, GTK_WIDGET (tree_view));
 763
 764   g_signal_connect (priv->button, "event",
 765                     G_CALLBACK (gtk_tree_view_column_button_event),
 766                     tree_column);
 767   g_signal_connect (priv->button, "clicked",
 768                     G_CALLBACK (gtk_tree_view_column_button_clicked),
 769                     tree_column);
 770
 771   priv->alignment = gtk_alignment_new (priv->xalign, 0.5, 0.0, 0.0);
 772
 773   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
 774   priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 775
 776   if (priv->child)
 777     child = priv->child;
 778   else
 779     {
 780       child = gtk_label_new (priv->title);
 781       gtk_widget_show (child);
 782     }
 783
 784   g_signal_connect (child, "mnemonic-activate",
 785                     G_CALLBACK (gtk_tree_view_column_mnemonic_activate),
 786                     tree_column);
 787
 788   if (priv->xalign <= 0.5)
 789     gtk_box_pack_end (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
 790   else
 791     gtk_box_pack_start (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
 792
 793   gtk_box_pack_start (GTK_BOX (hbox), priv->alignment, TRUE, TRUE, 0);
 794
 795   gtk_container_add (GTK_CONTAINER (priv->alignment), child);
 796   gtk_container_add (GTK_CONTAINER (priv->button), hbox);
 797
 798   gtk_widget_show (hbox);
 799   gtk_widget_show (priv->alignment);
 800   gtk_tree_view_column_update_button (tree_column);
 801 }
 802
 803 static void
 804 gtk_tree_view_column_update_button (GtkTreeViewColumn *tree_column)
 805 {
 806   GtkTreeViewColumnPrivate *priv = tree_column->priv;
 807   gint sort_column_id = -1;
 808   GtkWidget *hbox;
 809   GtkWidget *alignment;
 810   GtkWidget *arrow;
 811   GtkWidget *current_child;
 812   GtkArrowType arrow_type = GTK_ARROW_NONE;
 813   GtkTreeModel *model;
 814
 815   if (priv->tree_view)
 816     model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
 817   else
 818     model = NULL;
 819
 820   /* Create a button if necessary */
 821   if (priv->visible &&
 822       priv->button == NULL &&
 823       priv->tree_view &&
 824       gtk_widget_get_realized (priv->tree_view))
 825     gtk_tree_view_column_create_button (tree_column);
 826
 827   if (! priv->button)
 828     return;
 829
 830   hbox = gtk_bin_get_child (GTK_BIN (priv->button));
 831   alignment = priv->alignment;
 832   arrow = priv->arrow;
 833   current_child = gtk_bin_get_child (GTK_BIN (alignment));
 834
 835   /* Set up the actual button */
 836   gtk_alignment_set (GTK_ALIGNMENT (alignment), priv->xalign,
 837                      0.5, 0.0, 0.0);
 838
 839   if (priv->child)
 840     {
 841       if (current_child != priv->child)
 842         {
 843           gtk_container_remove (GTK_CONTAINER (alignment),
 844                                 current_child);
 845           gtk_container_add (GTK_CONTAINER (alignment),
 846                              priv->child);
 847         }
 848     }
 849   else
 850     {
 851       if (current_child == NULL)
 852         {
 853           current_child = gtk_label_new (NULL);
 854           gtk_widget_show (current_child);
 855           gtk_container_add (GTK_CONTAINER (alignment),
 856                              current_child);
 857         }
 858
 859       g_return_if_fail (GTK_IS_LABEL (current_child));
 860
 861       if (priv->title)
 862         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 863                                           priv->title);
 864       else
 865         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 866                                           "");
 867     }
 868
 869   if (GTK_IS_TREE_SORTABLE (model))
 870     gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
 871                                           &sort_column_id,
 872                                           NULL);
 873
 874   if (priv->show_sort_indicator)
 875     {
 876       gboolean alternative;
 877
 878       g_object_get (gtk_widget_get_settings (priv->tree_view),
 879                     "gtk-alternative-sort-arrows", &alternative,
 880                     NULL);
 881
 882       switch (priv->sort_order)
 883         {
 884           case GTK_SORT_ASCENDING:
 885             arrow_type = alternative ? GTK_ARROW_UP : GTK_ARROW_DOWN;
 886             break;
 887
 888           case GTK_SORT_DESCENDING:
 889             arrow_type = alternative ? GTK_ARROW_DOWN : GTK_ARROW_UP;
 890             break;
 891
 892           default:
 893             g_warning (G_STRLOC": bad sort order");
 894             break;
 895         }
 896     }
 897
 898   gtk_arrow_set (GTK_ARROW (arrow),
 899                  arrow_type,
 900                  GTK_SHADOW_IN);
 901
 902   /* Put arrow on the right if the text is left-or-center justified, and on the
 903    * left otherwise; do this by packing boxes, so flipping text direction will
 904    * reverse things
 905    */
 906   g_object_ref (arrow);
 907   gtk_container_remove (GTK_CONTAINER (hbox), arrow);
 908
 909   if (priv->xalign <= 0.5)
 910     {
 911       gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
 912     }
 913   else
 914     {
 915       gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
 916       /* move it to the front */
 917       gtk_box_reorder_child (GTK_BOX (hbox), arrow, 0);
 918     }
 919   g_object_unref (arrow);
 920
 921   if (priv->show_sort_indicator
 922       || (GTK_IS_TREE_SORTABLE (model) && priv->sort_column_id >= 0))
 923     gtk_widget_show (arrow);
 924   else
 925     gtk_widget_hide (arrow);
 926
 927   /* It's always safe to hide the button.  It isn't always safe to show it, as
 928    * if you show it before it's realized, it'll get the wrong window. */
 929   if (priv->button &&
 930       priv->tree_view != NULL &&
 931       gtk_widget_get_realized (priv->tree_view))
 932     {
 933       if (priv->visible)
 934         {
 935           gtk_widget_show_now (priv->button);
 936           if (priv->window)
 937             {
 938               if (priv->resizable)
 939                 {
 940                   gdk_window_show (priv->window);
 941                   gdk_window_raise (priv->window);
 942                 }
 943               else
 944                 {
 945                   gdk_window_hide (priv->window);
 946                 }
 947             }
 948         }
 949       else
 950         {
 951           gtk_widget_hide (priv->button);
 952           if (priv->window)
 953             gdk_window_hide (priv->window);
 954         }
 955     }
 956
 957   if (priv->reorderable || priv->clickable)
 958     {
 959       gtk_widget_set_can_focus (priv->button, TRUE);
 960     }
 961   else
 962     {
 963       gtk_widget_set_can_focus (priv->button, FALSE);
 964       if (gtk_widget_has_focus (priv->button))
 965         {
 966           GtkWidget *toplevel = gtk_widget_get_toplevel (priv->tree_view);
 967           if (gtk_widget_is_toplevel (toplevel))
 968             {
 969               gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
 970             }
 971         }
 972     }
 973   /* Queue a resize on the assumption that we always want to catch all changes
 974    * and columns don't change all that often.
 975    */
 976   if (gtk_widget_get_realized (priv->tree_view))
 977      gtk_widget_queue_resize (priv->tree_view);
 978
 979 }
 980
 981 /* Button signal handlers
 982  */
 983
 984 static gint
 985 gtk_tree_view_column_button_event (GtkWidget *widget,
 986                                    GdkEvent  *event,
 987                                    gpointer   data)
 988 {
 989   GtkTreeViewColumn        *column = (GtkTreeViewColumn *) data;
 990   GtkTreeViewColumnPrivate *priv   = column->priv;
 991
 992   g_return_val_if_fail (event != NULL, FALSE);
 993
 994   if (event->type == GDK_BUTTON_PRESS &&
 995       priv->reorderable &&
 996       ((GdkEventButton *)event)->button == 1)
 997     {
 998       priv->maybe_reordered = TRUE;
 999       gdk_window_get_pointer (gtk_button_get_event_window (GTK_BUTTON (widget)),
1000                               &priv->drag_x,
1001                               &priv->drag_y,
1002                               NULL);
1003       gtk_widget_grab_focus (widget);
1004     }
1005
1006   if (event->type == GDK_BUTTON_RELEASE ||
1007       event->type == GDK_LEAVE_NOTIFY)
1008     priv->maybe_reordered = FALSE;
1009
1010   if (event->type == GDK_MOTION_NOTIFY &&
1011       priv->maybe_reordered &&
1012       (gtk_drag_check_threshold (widget,
1013                                  priv->drag_x,
1014                                  priv->drag_y,
1015                                  (gint) ((GdkEventMotion *)event)->x,
1016                                  (gint) ((GdkEventMotion *)event)->y)))
1017     {
1018       priv->maybe_reordered = FALSE;
1019       _gtk_tree_view_column_start_drag (GTK_TREE_VIEW (priv->tree_view), column,
1020                                         event->motion.device);
1021       return TRUE;
1022     }
1023
1024   if (priv->clickable == FALSE)
1025     {
1026       switch (event->type)
1027         {
1028         case GDK_BUTTON_PRESS:
1029         case GDK_2BUTTON_PRESS:
1030         case GDK_3BUTTON_PRESS:
1031         case GDK_MOTION_NOTIFY:
1032         case GDK_BUTTON_RELEASE:
1033         case GDK_ENTER_NOTIFY:
1034         case GDK_LEAVE_NOTIFY:
1035           return TRUE;
1036         default:
1037           return FALSE;
1038         }
1039     }
1040   return FALSE;
1041 }
1042
1043
1044 static void
1045 gtk_tree_view_column_button_clicked (GtkWidget *widget, gpointer data)
1046 {
1047   g_signal_emit_by_name (data, "clicked");
1048 }
1049
1050 static gboolean
1051 gtk_tree_view_column_mnemonic_activate (GtkWidget *widget,
1052                                         gboolean   group_cycling,
1053                                         gpointer   data)
1054 {
1055   GtkTreeViewColumn        *column = (GtkTreeViewColumn *)data;
1056   GtkTreeViewColumnPrivate *priv   = column->priv;
1057
1058   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), FALSE);
1059
1060   /* XXX Direct access to treeview */
1061   GTK_TREE_VIEW (priv->tree_view)->priv->focus_column = column;
1062
1063   if (priv->clickable)
1064     gtk_button_clicked (GTK_BUTTON (priv->button));
1065   else if (gtk_widget_get_can_focus (priv->button))
1066     gtk_widget_grab_focus (priv->button);
1067   else
1068     gtk_widget_grab_focus (priv->tree_view);
1069
1070   return TRUE;
1071 }
1072
1073 static void
1074 gtk_tree_view_model_sort_column_changed (GtkTreeSortable   *sortable,
1075                                          GtkTreeViewColumn *column)
1076 {
1077   GtkTreeViewColumnPrivate *priv = column->priv;
1078   gint sort_column_id;
1079   GtkSortType order;
1080
1081   if (gtk_tree_sortable_get_sort_column_id (sortable,
1082                                             &sort_column_id,
1083                                             &order))
1084     {
1085       if (sort_column_id == priv->sort_column_id)
1086         {
1087           gtk_tree_view_column_set_sort_indicator (column, TRUE);
1088           gtk_tree_view_column_set_sort_order (column, order);
1089         }
1090       else
1091         {
1092           gtk_tree_view_column_set_sort_indicator (column, FALSE);
1093         }
1094     }
1095   else
1096     {
1097       gtk_tree_view_column_set_sort_indicator (column, FALSE);
1098     }
1099 }
1100
1101 static void
1102 gtk_tree_view_column_sort (GtkTreeViewColumn *tree_column,
1103                            gpointer           data)
1104 {
1105   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1106   GtkTreeModel *model;
1107   GtkTreeSortable *sortable;
1108   gint sort_column_id;
1109   GtkSortType order;
1110   gboolean has_sort_column;
1111   gboolean has_default_sort_func;
1112
1113   g_return_if_fail (priv->tree_view != NULL);
1114
1115   model    = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
1116   sortable = GTK_TREE_SORTABLE (model);
1117
1118   has_sort_column =
1119     gtk_tree_sortable_get_sort_column_id (sortable,
1120                                           &sort_column_id,
1121                                           &order);
1122   has_default_sort_func =
1123     gtk_tree_sortable_has_default_sort_func (sortable);
1124
1125   if (has_sort_column &&
1126       sort_column_id == priv->sort_column_id)
1127     {
1128       if (order == GTK_SORT_ASCENDING)
1129         gtk_tree_sortable_set_sort_column_id (sortable,
1130                                               priv->sort_column_id,
1131                                               GTK_SORT_DESCENDING);
1132       else if (order == GTK_SORT_DESCENDING && has_default_sort_func)
1133         gtk_tree_sortable_set_sort_column_id (sortable,
1134                                               GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
1135                                               GTK_SORT_ASCENDING);
1136       else
1137         gtk_tree_sortable_set_sort_column_id (sortable,
1138                                               priv->sort_column_id,
1139                                               GTK_SORT_ASCENDING);
1140     }
1141   else
1142     {
1143       gtk_tree_sortable_set_sort_column_id (sortable,
1144                                             priv->sort_column_id,
1145                                             GTK_SORT_ASCENDING);
1146     }
1147 }
1148
1149 static void
1150 gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn *tree_column)
1151 {
1152   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1153   GtkTreeModel *model;
1154
1155   if (priv->tree_view == NULL)
1156     return;
1157
1158   model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
1159
1160   if (model == NULL)
1161     return;
1162
1163   if (GTK_IS_TREE_SORTABLE (model) &&
1164       priv->sort_column_id != -1)
1165     {
1166       gint real_sort_column_id;
1167       GtkSortType real_order;
1168
1169       if (priv->sort_column_changed_signal == 0)
1170         priv->sort_column_changed_signal =
1171           g_signal_connect (model, "sort-column-changed",
1172                             G_CALLBACK (gtk_tree_view_model_sort_column_changed),
1173                             tree_column);
1174
1175       if (gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
1176                                                 &real_sort_column_id,
1177                                                 &real_order) &&
1178           (real_sort_column_id == priv->sort_column_id))
1179         {
1180           gtk_tree_view_column_set_sort_indicator (tree_column, TRUE);
1181           gtk_tree_view_column_set_sort_order (tree_column, real_order);
1182         }
1183       else
1184         {
1185           gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
1186         }
1187    }
1188 }
1189
1190 static void
1191 gtk_tree_view_column_context_changed  (GtkCellAreaContext      *context,
1192                                        GParamSpec              *pspec,
1193                                        GtkTreeViewColumn       *tree_column)
1194 {
1195   if (!strcmp (pspec->name, "minimum-width") ||
1196       !strcmp (pspec->name, "natural-width") ||
1197       !strcmp (pspec->name, "minimum-height") ||
1198       !strcmp (pspec->name, "natural-height"))
1199     {
1200       /* XXX We want to do something specific if the size actually got cleared
1201        * or if it just grew a little bit because of a data change and we
1202        * are in GROW_ONLY mode.
1203        */
1204       _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1205     }
1206 }
1207
1208 static void
1209 gtk_tree_view_column_add_editable_callback (GtkCellArea       *area,
1210                                             GtkCellRenderer   *renderer,
1211                                             GtkCellEditable   *edit_widget,
1212                                             GdkRectangle      *cell_area,
1213                                             const gchar       *path_string,
1214                                             gpointer           user_data)
1215 {
1216   GtkTreeViewColumn        *column = user_data;
1217   GtkTreeViewColumnPrivate *priv   = column->priv;
1218   GtkTreePath              *path;
1219
1220   path = gtk_tree_path_new_from_string (path_string);
1221
1222   _gtk_tree_view_add_editable (GTK_TREE_VIEW (priv->tree_view),
1223                                column,
1224                                path,
1225                                edit_widget,
1226                                cell_area);
1227
1228   gtk_tree_path_free (path);
1229 }
1230
1231 static void
1232 gtk_tree_view_column_remove_editable_callback (GtkCellArea     *area,
1233                                                GtkCellRenderer *renderer,
1234                                                GtkCellEditable *edit_widget,
1235                                                gpointer         user_data)
1236 {
1237   GtkTreeViewColumn        *column = user_data;
1238   GtkTreeViewColumnPrivate *priv   = column->priv;
1239
1240   _gtk_tree_view_remove_editable (GTK_TREE_VIEW (priv->tree_view),
1241                                   column,
1242                                   edit_widget);
1243 }
1244
1245 /* Exported Private Functions.
1246  * These should only be called by gtktreeview.c or gtktreeviewcolumn.c
1247  */
1248 void
1249 _gtk_tree_view_column_realize_button (GtkTreeViewColumn *column)
1250 {
1251   GtkTreeViewColumnPrivate *priv = column->priv;
1252   GtkAllocation allocation;
1253   GtkTreeView *tree_view;
1254   GdkWindowAttr attr;
1255   guint attributes_mask;
1256   gboolean rtl;
1257
1258   tree_view = (GtkTreeView *)priv->tree_view;
1259   rtl       = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
1260
1261   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
1262   g_return_if_fail (gtk_widget_get_realized (priv->tree_view));
1263   g_return_if_fail (priv->button != NULL);
1264
1265   /* XXX Access to GtkTreeView->priv */
1266   g_return_if_fail (tree_view->priv->header_window != NULL);
1267   gtk_widget_set_parent_window (priv->button, tree_view->priv->header_window);
1268
1269   if (priv->visible)
1270     gtk_widget_show (priv->button);
1271
1272   attr.window_type = GDK_WINDOW_CHILD;
1273   attr.wclass = GDK_INPUT_ONLY;
1274   attr.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
1275   attr.event_mask = gtk_widget_get_events (GTK_WIDGET (tree_view)) |
1276                     (GDK_BUTTON_PRESS_MASK |
1277                      GDK_BUTTON_RELEASE_MASK |
1278                      GDK_POINTER_MOTION_MASK |
1279                      GDK_POINTER_MOTION_HINT_MASK |
1280                      GDK_KEY_PRESS_MASK);
1281   attributes_mask = GDK_WA_CURSOR | GDK_WA_X | GDK_WA_Y;
1282   attr.cursor = gdk_cursor_new_for_display (gdk_window_get_display (tree_view->priv->header_window),
1283                                             GDK_SB_H_DOUBLE_ARROW);
1284   attr.y = 0;
1285   attr.width = TREE_VIEW_DRAG_WIDTH;
1286   attr.height = tree_view->priv->header_height;
1287
1288   gtk_widget_get_allocation (priv->button, &allocation);
1289   attr.x       = (allocation.x + (rtl ? 0 : allocation.width)) - TREE_VIEW_DRAG_WIDTH / 2;
1290   priv->window = gdk_window_new (tree_view->priv->header_window,
1291                                    &attr, attributes_mask);
1292   gdk_window_set_user_data (priv->window, tree_view);
1293
1294   gtk_tree_view_column_update_button (column);
1295
1296   gdk_cursor_unref (attr.cursor);
1297 }
1298
1299 void
1300 _gtk_tree_view_column_unrealize_button (GtkTreeViewColumn *column)
1301 {
1302   GtkTreeViewColumnPrivate *priv;
1303
1304   g_return_if_fail (column != NULL);
1305
1306   priv = column->priv;
1307   g_return_if_fail (priv->window != NULL);
1308
1309   gdk_window_set_user_data (priv->window, NULL);
1310   gdk_window_destroy (priv->window);
1311   priv->window = NULL;
1312 }
1313
1314 void
1315 _gtk_tree_view_column_unset_model (GtkTreeViewColumn *column,
1316                                    GtkTreeModel      *old_model)
1317 {
1318   GtkTreeViewColumnPrivate *priv = column->priv;
1319
1320   if (priv->sort_column_changed_signal)
1321     {
1322       g_signal_handler_disconnect (old_model,
1323                                    priv->sort_column_changed_signal);
1324       priv->sort_column_changed_signal = 0;
1325     }
1326   gtk_tree_view_column_set_sort_indicator (column, FALSE);
1327 }
1328
1329 void
1330 _gtk_tree_view_column_set_tree_view (GtkTreeViewColumn *column,
1331                                      GtkTreeView       *tree_view)
1332 {
1333   GtkTreeViewColumnPrivate *priv = column->priv;
1334
1335   g_assert (priv->tree_view == NULL);
1336
1337   priv->tree_view = GTK_WIDGET (tree_view);
1338   gtk_tree_view_column_create_button (column);
1339
1340   priv->add_editable_signal =
1341     g_signal_connect (priv->cell_area, "add-editable",
1342                       G_CALLBACK (gtk_tree_view_column_add_editable_callback),
1343                       column);
1344   priv->remove_editable_signal =
1345     g_signal_connect (priv->cell_area, "remove-editable",
1346                       G_CALLBACK (gtk_tree_view_column_remove_editable_callback),
1347                       column);
1348
1349   priv->property_changed_signal =
1350     g_signal_connect_swapped (tree_view,
1351                               "notify::model",
1352                               G_CALLBACK (gtk_tree_view_column_setup_sort_column_id_callback),
1353                               column);
1354
1355   gtk_tree_view_column_setup_sort_column_id_callback (column);
1356 }
1357
1358 void
1359 _gtk_tree_view_column_unset_tree_view (GtkTreeViewColumn *column)
1360 {
1361   GtkTreeViewColumnPrivate *priv = column->priv;
1362
1363   if (priv->tree_view && priv->button)
1364     {
1365       gtk_container_remove (GTK_CONTAINER (priv->tree_view), priv->button);
1366     }
1367   if (priv->property_changed_signal)
1368     {
1369       g_signal_handler_disconnect (priv->tree_view, priv->property_changed_signal);
1370       priv->property_changed_signal = 0;
1371     }
1372
1373   if (priv->sort_column_changed_signal)
1374     {
1375       g_signal_handler_disconnect (gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view)),
1376                                    priv->sort_column_changed_signal);
1377       priv->sort_column_changed_signal = 0;
1378     }
1379
1380   priv->tree_view = NULL;
1381   priv->button = NULL;
1382 }
1383
1384 gboolean
1385 _gtk_tree_view_column_has_editable_cell (GtkTreeViewColumn *column)
1386 {
1387   GtkTreeViewColumnPrivate *priv = column->priv;
1388   gboolean ret = FALSE;
1389   GList *list, *cells;
1390
1391   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
1392
1393   for (list = cells; list; list = list->next)
1394     {
1395       GtkCellRenderer *cell = list->data;
1396       GtkCellRendererMode mode;
1397
1398       g_object_get (cell, "mode", &mode, NULL);
1399
1400       if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
1401         {
1402           ret = TRUE;
1403           break;
1404         }
1405     }
1406
1407   g_list_free (cells);
1408
1409   return ret;
1410 }
1411
1412 /* gets cell being edited */
1413 GtkCellRenderer *
1414 _gtk_tree_view_column_get_edited_cell (GtkTreeViewColumn *column)
1415 {
1416   GtkTreeViewColumnPrivate *priv = column->priv;
1417
1418   return gtk_cell_area_get_edited_cell (priv->cell_area);
1419 }
1420
1421 /* Public Functions */
1422
1423
1424 /**
1425  * gtk_tree_view_column_new:
1426  *
1427  * Creates a new #GtkTreeViewColumn.
1428  *
1429  * Return value: A newly created #GtkTreeViewColumn.
1430  **/
1431 GtkTreeViewColumn *
1432 gtk_tree_view_column_new (void)
1433 {
1434   GtkTreeViewColumn *tree_column;
1435
1436   tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, NULL);
1437
1438   return tree_column;
1439 }
1440
1441 /**
1442  * gtk_tree_view_column_new_with_attributes:
1443  * @title: The title to set the header to.
1444  * @cell: The #GtkCellRenderer.
1445  * @Varargs: A %NULL-terminated list of attributes.
1446  *
1447  * Creates a new #GtkTreeViewColumn with a number of default values.  This is
1448  * equivalent to calling gtk_tree_view_column_set_title(),
1449  * gtk_tree_view_column_pack_start(), and
1450  * gtk_tree_view_column_set_attributes() on the newly created #GtkTreeViewColumn.
1451  *
1452  * Here's a simple example:
1453  * |[
1454  *  enum { TEXT_COLUMN, COLOR_COLUMN, N_COLUMNS };
1455  *  ...
1456  *  {
1457  *    GtkTreeViewColumn *column;
1458  *    GtkCellRenderer   *renderer = gtk_cell_renderer_text_new ();
1459  *
1460  *    column = gtk_tree_view_column_new_with_attributes ("Title",
1461  *                                                       renderer,
1462  *                                                       "text", TEXT_COLUMN,
1463  *                                                       "foreground", COLOR_COLUMN,
1464  *                                                       NULL);
1465  *  }
1466  * ]|
1467  *
1468  * Return value: A newly created #GtkTreeViewColumn.
1469  **/
1470 GtkTreeViewColumn *
1471 gtk_tree_view_column_new_with_attributes (const gchar     *title,
1472                                           GtkCellRenderer *cell,
1473                                           ...)
1474 {
1475   GtkTreeViewColumn *retval;
1476   va_list args;
1477
1478   retval = gtk_tree_view_column_new ();
1479
1480   gtk_tree_view_column_set_title (retval, title);
1481   gtk_tree_view_column_pack_start (retval, cell, TRUE);
1482
1483   va_start (args, cell);
1484   gtk_tree_view_column_set_attributesv (retval, cell, args);
1485   va_end (args);
1486
1487   return retval;
1488 }
1489
1490 /**
1491  * gtk_tree_view_column_pack_start:
1492  * @tree_column: A #GtkTreeViewColumn.
1493  * @cell: The #GtkCellRenderer.
1494  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1495  *
1496  * Packs the @cell into the beginning of the column. If @expand is %FALSE, then
1497  * the @cell is allocated no more space than it needs. Any unused space is divided
1498  * evenly between cells for which @expand is %TRUE.
1499  **/
1500 void
1501 gtk_tree_view_column_pack_start (GtkTreeViewColumn *tree_column,
1502                                  GtkCellRenderer   *cell,
1503                                  gboolean           expand)
1504 {
1505   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (tree_column), cell, expand);
1506 }
1507
1508 /**
1509  * gtk_tree_view_column_pack_end:
1510  * @tree_column: A #GtkTreeViewColumn.
1511  * @cell: The #GtkCellRenderer.
1512  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1513  *
1514  * Adds the @cell to end of the column. If @expand is %FALSE, then the @cell
1515  * is allocated no more space than it needs. Any unused space is divided
1516  * evenly between cells for which @expand is %TRUE.
1517  **/
1518 void
1519 gtk_tree_view_column_pack_end (GtkTreeViewColumn  *tree_column,
1520                                GtkCellRenderer    *cell,
1521                                gboolean            expand)
1522 {
1523   gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (tree_column), cell, expand);
1524 }
1525
1526 /**
1527  * gtk_tree_view_column_clear:
1528  * @tree_column: A #GtkTreeViewColumn
1529  *
1530  * Unsets all the mappings on all renderers on the @tree_column.
1531  **/
1532 void
1533 gtk_tree_view_column_clear (GtkTreeViewColumn *tree_column)
1534 {
1535   gtk_cell_layout_clear (GTK_CELL_LAYOUT (tree_column));
1536 }
1537
1538 /**
1539  * gtk_tree_view_column_add_attribute:
1540  * @tree_column: A #GtkTreeViewColumn.
1541  * @cell_renderer: the #GtkCellRenderer to set attributes on
1542  * @attribute: An attribute on the renderer
1543  * @column: The column position on the model to get the attribute from.
1544  *
1545  * Adds an attribute mapping to the list in @tree_column.  The @column is the
1546  * column of the model to get a value from, and the @attribute is the
1547  * parameter on @cell_renderer to be set from the value. So for example
1548  * if column 2 of the model contains strings, you could have the
1549  * "text" attribute of a #GtkCellRendererText get its values from
1550  * column 2.
1551  **/
1552 void
1553 gtk_tree_view_column_add_attribute (GtkTreeViewColumn *tree_column,
1554                                     GtkCellRenderer   *cell_renderer,
1555                                     const gchar       *attribute,
1556                                     gint               column)
1557 {
1558   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (tree_column),
1559                                  cell_renderer, attribute, column);
1560 }
1561
1562 static void
1563 gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
1564                                       GtkCellRenderer   *cell_renderer,
1565                                       va_list            args)
1566 {
1567   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1568   gchar *attribute;
1569   gint column;
1570
1571   attribute = va_arg (args, gchar *);
1572
1573   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (priv->cell_area),
1574                                     cell_renderer);
1575
1576   while (attribute != NULL)
1577     {
1578       column = va_arg (args, gint);
1579       gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (priv->cell_area),
1580                                      cell_renderer, attribute, column);
1581       attribute = va_arg (args, gchar *);
1582     }
1583 }
1584
1585 /**
1586  * gtk_tree_view_column_set_attributes:
1587  * @tree_column: A #GtkTreeViewColumn.
1588  * @cell_renderer: the #GtkCellRenderer we're setting the attributes of
1589  * @Varargs: A %NULL-terminated list of attributes.
1590  *
1591  * Sets the attributes in the list as the attributes of @tree_column.
1592  * The attributes should be in attribute/column order, as in
1593  * gtk_tree_view_column_add_attribute(). All existing attributes
1594  * are removed, and replaced with the new attributes.
1595  **/
1596 void
1597 gtk_tree_view_column_set_attributes (GtkTreeViewColumn *tree_column,
1598                                      GtkCellRenderer   *cell_renderer,
1599                                      ...)
1600 {
1601   va_list args;
1602
1603   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1604   g_return_if_fail (GTK_IS_CELL_RENDERER (cell_renderer));
1605
1606   va_start (args, cell_renderer);
1607   gtk_tree_view_column_set_attributesv (tree_column, cell_renderer, args);
1608   va_end (args);
1609 }
1610
1611
1612 /**
1613  * gtk_tree_view_column_set_cell_data_func:
1614  * @tree_column: A #GtkTreeViewColumn
1615  * @cell_renderer: A #GtkCellRenderer
1616  * @func: The #GtkTreeViewColumnFunc to use.
1617  * @func_data: The user data for @func.
1618  * @destroy: The destroy notification for @func_data
1619  *
1620  * Sets the #GtkTreeViewColumnFunc to use for the column.  This
1621  * function is used instead of the standard attributes mapping for
1622  * setting the column value, and should set the value of @tree_column's
1623  * cell renderer as appropriate.  @func may be %NULL to remove an
1624  * older one.
1625  **/
1626 void
1627 gtk_tree_view_column_set_cell_data_func (GtkTreeViewColumn   *tree_column,
1628                                          GtkCellRenderer     *cell_renderer,
1629                                          GtkTreeCellDataFunc  func,
1630                                          gpointer             func_data,
1631                                          GDestroyNotify       destroy)
1632 {
1633   gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (tree_column),
1634                                       cell_renderer,
1635                                       (GtkCellLayoutDataFunc)func,
1636                                       func_data, destroy);
1637 }
1638
1639
1640 /**
1641  * gtk_tree_view_column_clear_attributes:
1642  * @tree_column: a #GtkTreeViewColumn
1643  * @cell_renderer: a #GtkCellRenderer to clear the attribute mapping on.
1644  *
1645  * Clears all existing attributes previously set with
1646  * gtk_tree_view_column_set_attributes().
1647  **/
1648 void
1649 gtk_tree_view_column_clear_attributes (GtkTreeViewColumn *tree_column,
1650                                        GtkCellRenderer   *cell_renderer)
1651 {
1652   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (tree_column),
1653                                     cell_renderer);
1654 }
1655
1656 /**
1657  * gtk_tree_view_column_set_spacing:
1658  * @tree_column: A #GtkTreeViewColumn.
1659  * @spacing: distance between cell renderers in pixels.
1660  *
1661  * Sets the spacing field of @tree_column, which is the number of pixels to
1662  * place between cell renderers packed into it.
1663  **/
1664 void
1665 gtk_tree_view_column_set_spacing (GtkTreeViewColumn *tree_column,
1666                                   gint               spacing)
1667 {
1668   GtkTreeViewColumnPrivate *priv;
1669
1670   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1671   g_return_if_fail (spacing >= 0);
1672
1673   priv = tree_column->priv;
1674
1675   gtk_cell_area_box_set_spacing (GTK_CELL_AREA_BOX (priv->cell_area),
1676                                  spacing);
1677   if (priv->tree_view)
1678     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1679 }
1680
1681 /**
1682  * gtk_tree_view_column_get_spacing:
1683  * @tree_column: A #GtkTreeViewColumn.
1684  *
1685  * Returns the spacing of @tree_column.
1686  *
1687  * Return value: the spacing of @tree_column.
1688  **/
1689 gint
1690 gtk_tree_view_column_get_spacing (GtkTreeViewColumn *tree_column)
1691 {
1692   GtkTreeViewColumnPrivate *priv;
1693
1694   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1695
1696   priv = tree_column->priv;
1697
1698   return gtk_cell_area_box_get_spacing (GTK_CELL_AREA_BOX (priv->cell_area));
1699 }
1700
1701 /* Options for manipulating the columns */
1702
1703 /**
1704  * gtk_tree_view_column_set_visible:
1705  * @tree_column: A #GtkTreeViewColumn.
1706  * @visible: %TRUE if the @tree_column is visible.
1707  *
1708  * Sets the visibility of @tree_column.
1709  **/
1710 void
1711 gtk_tree_view_column_set_visible (GtkTreeViewColumn *tree_column,
1712                                   gboolean           visible)
1713 {
1714   GtkTreeViewColumnPrivate *priv;
1715
1716   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1717
1718   priv    = tree_column->priv;
1719   visible = !! visible;
1720
1721   if (priv->visible == visible)
1722     return;
1723
1724   priv->visible = visible;
1725
1726   if (priv->visible)
1727     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1728
1729   gtk_tree_view_column_update_button (tree_column);
1730   g_object_notify (G_OBJECT (tree_column), "visible");
1731 }
1732
1733 /**
1734  * gtk_tree_view_column_get_visible:
1735  * @tree_column: A #GtkTreeViewColumn.
1736  *
1737  * Returns %TRUE if @tree_column is visible.
1738  *
1739  * Return value: whether the column is visible or not.  If it is visible, then
1740  * the tree will show the column.
1741  **/
1742 gboolean
1743 gtk_tree_view_column_get_visible (GtkTreeViewColumn *tree_column)
1744 {
1745   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
1746
1747   return tree_column->priv->visible;
1748 }
1749
1750 /**
1751  * gtk_tree_view_column_set_resizable:
1752  * @tree_column: A #GtkTreeViewColumn
1753  * @resizable: %TRUE, if the column can be resized
1754  *
1755  * If @resizable is %TRUE, then the user can explicitly resize the column by
1756  * grabbing the outer edge of the column button.  If resizable is %TRUE and
1757  * sizing mode of the column is #GTK_TREE_VIEW_COLUMN_AUTOSIZE, then the sizing
1758  * mode is changed to #GTK_TREE_VIEW_COLUMN_GROW_ONLY.
1759  **/
1760 void
1761 gtk_tree_view_column_set_resizable (GtkTreeViewColumn *tree_column,
1762                                     gboolean           resizable)
1763 {
1764   GtkTreeViewColumnPrivate *priv;
1765
1766   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1767
1768   priv      = tree_column->priv;
1769   resizable = !! resizable;
1770
1771   if (priv->resizable == resizable)
1772     return;
1773
1774   priv->resizable = resizable;
1775
1776   if (resizable && priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1777     gtk_tree_view_column_set_sizing (tree_column, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
1778
1779   gtk_tree_view_column_update_button (tree_column);
1780
1781   g_object_notify (G_OBJECT (tree_column), "resizable");
1782 }
1783
1784 /**
1785  * gtk_tree_view_column_get_resizable:
1786  * @tree_column: A #GtkTreeViewColumn
1787  *
1788  * Returns %TRUE if the @tree_column can be resized by the end user.
1789  *
1790  * Return value: %TRUE, if the @tree_column can be resized.
1791  **/
1792 gboolean
1793 gtk_tree_view_column_get_resizable (GtkTreeViewColumn *tree_column)
1794 {
1795   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
1796
1797   return tree_column->priv->resizable;
1798 }
1799
1800
1801 /**
1802  * gtk_tree_view_column_set_sizing:
1803  * @tree_column: A #GtkTreeViewColumn.
1804  * @type: The #GtkTreeViewColumnSizing.
1805  *
1806  * Sets the growth behavior of @tree_column to @type.
1807  **/
1808 void
1809 gtk_tree_view_column_set_sizing (GtkTreeViewColumn       *tree_column,
1810                                  GtkTreeViewColumnSizing  type)
1811 {
1812   GtkTreeViewColumnPrivate *priv;
1813
1814   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1815
1816   priv      = tree_column->priv;
1817
1818   if (type == priv->column_type)
1819     return;
1820
1821   if (type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1822     gtk_tree_view_column_set_resizable (tree_column, FALSE);
1823
1824 #if 0
1825   /* I was clearly on crack when I wrote this.  I'm not sure what's supposed to
1826    * be below so I'll leave it until I figure it out.
1827    */
1828   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE &&
1829       priv->requested_width != -1)
1830     {
1831       gtk_tree_view_column_set_sizing (tree_column, priv->requested_width);
1832     }
1833 #endif
1834   priv->column_type = type;
1835
1836   gtk_tree_view_column_update_button (tree_column);
1837
1838   g_object_notify (G_OBJECT (tree_column), "sizing");
1839 }
1840
1841 /**
1842  * gtk_tree_view_column_get_sizing:
1843  * @tree_column: A #GtkTreeViewColumn.
1844  *
1845  * Returns the current type of @tree_column.
1846  *
1847  * Return value: The type of @tree_column.
1848  **/
1849 GtkTreeViewColumnSizing
1850 gtk_tree_view_column_get_sizing (GtkTreeViewColumn *tree_column)
1851 {
1852   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1853
1854   return tree_column->priv->column_type;
1855 }
1856
1857 /**
1858  * gtk_tree_view_column_get_width:
1859  * @tree_column: A #GtkTreeViewColumn.
1860  *
1861  * Returns the current size of @tree_column in pixels.
1862  *
1863  * Return value: The current width of @tree_column.
1864  **/
1865 gint
1866 gtk_tree_view_column_get_width (GtkTreeViewColumn *tree_column)
1867 {
1868   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1869
1870   return tree_column->priv->width;
1871 }
1872
1873 void
1874 _gtk_tree_view_column_set_width (GtkTreeViewColumn *tree_column,
1875                                  int                width,
1876                                  int                internal_width)
1877 {
1878   GtkTreeViewColumnPrivate *priv;
1879
1880   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1881
1882   priv = tree_column->priv;
1883
1884   gtk_cell_area_context_allocate (priv->cell_area_context, internal_width, -1);
1885   priv->width = width;
1886
1887   g_object_notify (G_OBJECT (tree_column), "width");
1888 }
1889
1890 /**
1891  * gtk_tree_view_column_set_fixed_width:
1892  * @tree_column: A #GtkTreeViewColumn.
1893  * @fixed_width: The size to set @tree_column to. Must be greater than 0.
1894  *
1895  * Sets the size of the column in pixels.  This is meaningful only if the sizing
1896  * type is #GTK_TREE_VIEW_COLUMN_FIXED.  The size of the column is clamped to
1897  * the min/max width for the column.  Please note that the min/max width of the
1898  * column doesn't actually affect the "fixed_width" property of the widget, just
1899  * the actual size when displayed.
1900  **/
1901 void
1902 gtk_tree_view_column_set_fixed_width (GtkTreeViewColumn *tree_column,
1903                                       gint               fixed_width)
1904 {
1905   GtkTreeViewColumnPrivate *priv;
1906
1907   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1908   g_return_if_fail (fixed_width > 0);
1909
1910   priv = tree_column->priv;
1911
1912   priv->fixed_width = fixed_width;
1913   priv->use_resized_width = FALSE;
1914
1915   if (priv->tree_view &&
1916       gtk_widget_get_realized (priv->tree_view) &&
1917       priv->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1918     {
1919       gtk_widget_queue_resize (priv->tree_view);
1920     }
1921
1922   g_object_notify (G_OBJECT (tree_column), "fixed-width");
1923 }
1924
1925 /**
1926  * gtk_tree_view_column_get_fixed_width:
1927  * @tree_column: a #GtkTreeViewColumn
1928  *
1929  * Gets the fixed width of the column.  This value is only meaning may not be
1930  * the actual width of the column on the screen, just what is requested.
1931  *
1932  * Return value: the fixed width of the column
1933  **/
1934 gint
1935 gtk_tree_view_column_get_fixed_width (GtkTreeViewColumn *tree_column)
1936 {
1937   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1938
1939   return tree_column->priv->fixed_width;
1940 }
1941
1942 /**
1943  * gtk_tree_view_column_set_min_width:
1944  * @tree_column: A #GtkTreeViewColumn.
1945  * @min_width: The minimum width of the column in pixels, or -1.
1946  *
1947  * Sets the minimum width of the @tree_column.  If @min_width is -1, then the
1948  * minimum width is unset.
1949  **/
1950 void
1951 gtk_tree_view_column_set_min_width (GtkTreeViewColumn *tree_column,
1952                                     gint               min_width)
1953 {
1954   GtkTreeViewColumnPrivate *priv;
1955
1956   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1957   g_return_if_fail (min_width >= -1);
1958
1959   priv = tree_column->priv;
1960
1961   if (min_width == priv->min_width)
1962     return;
1963
1964   if (priv->visible &&
1965       priv->tree_view != NULL &&
1966       gtk_widget_get_realized (priv->tree_view))
1967     {
1968       if (min_width > priv->width)
1969         gtk_widget_queue_resize (priv->tree_view);
1970     }
1971
1972   priv->min_width = min_width;
1973   g_object_freeze_notify (G_OBJECT (tree_column));
1974   if (priv->max_width != -1 && priv->max_width < min_width)
1975     {
1976       priv->max_width = min_width;
1977       g_object_notify (G_OBJECT (tree_column), "max-width");
1978     }
1979   g_object_notify (G_OBJECT (tree_column), "min-width");
1980   g_object_thaw_notify (G_OBJECT (tree_column));
1981
1982   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1983     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
1984                                     tree_column);
1985 }
1986
1987 /**
1988  * gtk_tree_view_column_get_min_width:
1989  * @tree_column: A #GtkTreeViewColumn.
1990  *
1991  * Returns the minimum width in pixels of the @tree_column, or -1 if no minimum
1992  * width is set.
1993  *
1994  * Return value: The minimum width of the @tree_column.
1995  **/
1996 gint
1997 gtk_tree_view_column_get_min_width (GtkTreeViewColumn *tree_column)
1998 {
1999   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
2000
2001   return tree_column->priv->min_width;
2002 }
2003
2004 /**
2005  * gtk_tree_view_column_set_max_width:
2006  * @tree_column: A #GtkTreeViewColumn.
2007  * @max_width: The maximum width of the column in pixels, or -1.
2008  *
2009  * Sets the maximum width of the @tree_column.  If @max_width is -1, then the
2010  * maximum width is unset.  Note, the column can actually be wider than max
2011  * width if it's the last column in a view.  In this case, the column expands to
2012  * fill any extra space.
2013  **/
2014 void
2015 gtk_tree_view_column_set_max_width (GtkTreeViewColumn *tree_column,
2016                                     gint               max_width)
2017 {
2018   GtkTreeViewColumnPrivate *priv;
2019
2020   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2021   g_return_if_fail (max_width >= -1);
2022
2023   priv = tree_column->priv;
2024
2025   if (max_width == priv->max_width)
2026     return;
2027
2028   if (priv->visible &&
2029       priv->tree_view != NULL &&
2030       gtk_widget_get_realized (priv->tree_view))
2031     {
2032       if (max_width != -1 && max_width < priv->width)
2033         gtk_widget_queue_resize (priv->tree_view);
2034     }
2035
2036   priv->max_width = max_width;
2037   g_object_freeze_notify (G_OBJECT (tree_column));
2038   if (max_width != -1 && max_width < priv->min_width)
2039     {
2040       priv->min_width = max_width;
2041       g_object_notify (G_OBJECT (tree_column), "min-width");
2042     }
2043   g_object_notify (G_OBJECT (tree_column), "max-width");
2044   g_object_thaw_notify (G_OBJECT (tree_column));
2045
2046   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2047     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
2048                                     tree_column);
2049 }
2050
2051 /**
2052  * gtk_tree_view_column_get_max_width:
2053  * @tree_column: A #GtkTreeViewColumn.
2054  *
2055  * Returns the maximum width in pixels of the @tree_column, or -1 if no maximum
2056  * width is set.
2057  *
2058  * Return value: The maximum width of the @tree_column.
2059  **/
2060 gint
2061 gtk_tree_view_column_get_max_width (GtkTreeViewColumn *tree_column)
2062 {
2063   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
2064
2065   return tree_column->priv->max_width;
2066 }
2067
2068 /**
2069  * gtk_tree_view_column_clicked:
2070  * @tree_column: a #GtkTreeViewColumn
2071  *
2072  * Emits the "clicked" signal on the column.  This function will only work if
2073  * @tree_column is clickable.
2074  **/
2075 void
2076 gtk_tree_view_column_clicked (GtkTreeViewColumn *tree_column)
2077 {
2078   GtkTreeViewColumnPrivate *priv;
2079
2080   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2081
2082   priv = tree_column->priv;
2083
2084   if (priv->visible &&
2085       priv->button &&
2086       priv->clickable)
2087     gtk_button_clicked (GTK_BUTTON (priv->button));
2088 }
2089
2090 /**
2091  * gtk_tree_view_column_set_title:
2092  * @tree_column: A #GtkTreeViewColumn.
2093  * @title: The title of the @tree_column.
2094  *
2095  * Sets the title of the @tree_column.  If a custom widget has been set, then
2096  * this value is ignored.
2097  **/
2098 void
2099 gtk_tree_view_column_set_title (GtkTreeViewColumn *tree_column,
2100                                 const gchar       *title)
2101 {
2102   GtkTreeViewColumnPrivate *priv;
2103   gchar                    *new_title;
2104
2105   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2106
2107   priv = tree_column->priv;
2108
2109   new_title = g_strdup (title);
2110   g_free (priv->title);
2111   priv->title = new_title;
2112
2113   gtk_tree_view_column_update_button (tree_column);
2114   g_object_notify (G_OBJECT (tree_column), "title");
2115 }
2116
2117 /**
2118  * gtk_tree_view_column_get_title:
2119  * @tree_column: A #GtkTreeViewColumn.
2120  *
2121  * Returns the title of the widget.
2122  *
2123  * Return value: the title of the column. This string should not be
2124  * modified or freed.
2125  **/
2126 G_CONST_RETURN gchar *
2127 gtk_tree_view_column_get_title (GtkTreeViewColumn *tree_column)
2128 {
2129   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2130
2131   return tree_column->priv->title;
2132 }
2133
2134 /**
2135  * gtk_tree_view_column_set_expand:
2136  * @tree_column: A #GtkTreeViewColumn
2137  * @expand: %TRUE if the column should take available extra space, %FALSE if not
2138  *
2139  * Sets the column to take available extra space.  This space is shared equally
2140  * amongst all columns that have the expand set to %TRUE.  If no column has this
2141  * option set, then the last column gets all extra space.  By default, every
2142  * column is created with this %FALSE.
2143  *
2144  * Since: 2.4
2145  **/
2146 void
2147 gtk_tree_view_column_set_expand (GtkTreeViewColumn *tree_column,
2148                                  gboolean           expand)
2149 {
2150   GtkTreeViewColumnPrivate *priv;
2151
2152   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2153
2154   priv = tree_column->priv;
2155
2156   expand = expand?TRUE:FALSE;
2157   if (priv->expand == expand)
2158     return;
2159   priv->expand = expand;
2160
2161   if (priv->visible &&
2162       priv->tree_view != NULL &&
2163       gtk_widget_get_realized (priv->tree_view))
2164     {
2165       /* We want to continue using the original width of the
2166        * column that includes additional space added by the user
2167        * resizing the columns and possibly extra (expanded) space, which
2168        * are not included in the resized width.
2169        */
2170       priv->use_resized_width = FALSE;
2171
2172       gtk_widget_queue_resize (priv->tree_view);
2173     }
2174
2175   g_object_notify (G_OBJECT (tree_column), "expand");
2176 }
2177
2178 /**
2179  * gtk_tree_view_column_get_expand:
2180  * @tree_column: a #GtkTreeViewColumn
2181  *
2182  * Return %TRUE if the column expands to take any available space.
2183  *
2184  * Return value: %TRUE, if the column expands
2185  *
2186  * Since: 2.4
2187  **/
2188 gboolean
2189 gtk_tree_view_column_get_expand (GtkTreeViewColumn *tree_column)
2190 {
2191   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2192
2193   return tree_column->priv->expand;
2194 }
2195
2196 /**
2197  * gtk_tree_view_column_set_clickable:
2198  * @tree_column: A #GtkTreeViewColumn.
2199  * @clickable: %TRUE if the header is active.
2200  *
2201  * Sets the header to be active if @active is %TRUE.  When the header is active,
2202  * then it can take keyboard focus, and can be clicked.
2203  **/
2204 void
2205 gtk_tree_view_column_set_clickable (GtkTreeViewColumn *tree_column,
2206                                     gboolean           clickable)
2207 {
2208   GtkTreeViewColumnPrivate *priv;
2209
2210   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2211
2212   priv = tree_column->priv;
2213
2214   clickable = !! clickable;
2215   if (priv->clickable == clickable)
2216     return;
2217
2218   priv->clickable = clickable;
2219   gtk_tree_view_column_update_button (tree_column);
2220   g_object_notify (G_OBJECT (tree_column), "clickable");
2221 }
2222
2223 /**
2224  * gtk_tree_view_column_get_clickable:
2225  * @tree_column: a #GtkTreeViewColumn
2226  *
2227  * Returns %TRUE if the user can click on the header for the column.
2228  *
2229  * Return value: %TRUE if user can click the column header.
2230  **/
2231 gboolean
2232 gtk_tree_view_column_get_clickable (GtkTreeViewColumn *tree_column)
2233 {
2234   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2235
2236   return tree_column->priv->clickable;
2237 }
2238
2239 /**
2240  * gtk_tree_view_column_set_widget:
2241  * @tree_column: A #GtkTreeViewColumn.
2242  * @widget: (allow-none): A child #GtkWidget, or %NULL.
2243  *
2244  * Sets the widget in the header to be @widget.  If widget is %NULL, then the
2245  * header button is set with a #GtkLabel set to the title of @tree_column.
2246  **/
2247 void
2248 gtk_tree_view_column_set_widget (GtkTreeViewColumn *tree_column,
2249                                  GtkWidget         *widget)
2250 {
2251   GtkTreeViewColumnPrivate *priv;
2252
2253   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2254   g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
2255
2256   priv = tree_column->priv;
2257
2258   if (widget)
2259     g_object_ref_sink (widget);
2260
2261   if (priv->child)
2262     g_object_unref (priv->child);
2263
2264   priv->child = widget;
2265   gtk_tree_view_column_update_button (tree_column);
2266   g_object_notify (G_OBJECT (tree_column), "widget");
2267 }
2268
2269 /**
2270  * gtk_tree_view_column_get_widget:
2271  * @tree_column: A #GtkTreeViewColumn.
2272  *
2273  * Returns the #GtkWidget in the button on the column header.
2274  * If a custom widget has not been set then %NULL is returned.
2275  *
2276  * Return value: (transfer none): The #GtkWidget in the column
2277  *     header, or %NULL
2278  **/
2279 GtkWidget *
2280 gtk_tree_view_column_get_widget (GtkTreeViewColumn *tree_column)
2281 {
2282   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2283
2284   return tree_column->priv->child;
2285 }
2286
2287 /**
2288  * gtk_tree_view_column_set_alignment:
2289  * @tree_column: A #GtkTreeViewColumn.
2290  * @xalign: The alignment, which is between [0.0 and 1.0] inclusive.
2291  *
2292  * Sets the alignment of the title or custom widget inside the column header.
2293  * The alignment determines its location inside the button -- 0.0 for left, 0.5
2294  * for center, 1.0 for right.
2295  **/
2296 void
2297 gtk_tree_view_column_set_alignment (GtkTreeViewColumn *tree_column,
2298                                     gfloat             xalign)
2299 {
2300   GtkTreeViewColumnPrivate *priv;
2301
2302   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2303
2304   priv = tree_column->priv;
2305
2306   xalign = CLAMP (xalign, 0.0, 1.0);
2307
2308   if (priv->xalign == xalign)
2309     return;
2310
2311   priv->xalign = xalign;
2312   gtk_tree_view_column_update_button (tree_column);
2313   g_object_notify (G_OBJECT (tree_column), "alignment");
2314 }
2315
2316 /**
2317  * gtk_tree_view_column_get_alignment:
2318  * @tree_column: A #GtkTreeViewColumn.
2319  *
2320  * Returns the current x alignment of @tree_column.  This value can range
2321  * between 0.0 and 1.0.
2322  *
2323  * Return value: The current alignent of @tree_column.
2324  **/
2325 gfloat
2326 gtk_tree_view_column_get_alignment (GtkTreeViewColumn *tree_column)
2327 {
2328   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0.5);
2329
2330   return tree_column->priv->xalign;
2331 }
2332
2333 /**
2334  * gtk_tree_view_column_set_reorderable:
2335  * @tree_column: A #GtkTreeViewColumn
2336  * @reorderable: %TRUE, if the column can be reordered.
2337  *
2338  * If @reorderable is %TRUE, then the column can be reordered by the end user
2339  * dragging the header.
2340  **/
2341 void
2342 gtk_tree_view_column_set_reorderable (GtkTreeViewColumn *tree_column,
2343                                       gboolean           reorderable)
2344 {
2345   GtkTreeViewColumnPrivate *priv;
2346
2347   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2348
2349   priv = tree_column->priv;
2350
2351   /*  if (reorderable)
2352       gtk_tree_view_column_set_clickable (tree_column, TRUE);*/
2353
2354   if (priv->reorderable == (reorderable?TRUE:FALSE))
2355     return;
2356
2357   priv->reorderable = (reorderable?TRUE:FALSE);
2358   gtk_tree_view_column_update_button (tree_column);
2359   g_object_notify (G_OBJECT (tree_column), "reorderable");
2360 }
2361
2362 /**
2363  * gtk_tree_view_column_get_reorderable:
2364  * @tree_column: A #GtkTreeViewColumn
2365  *
2366  * Returns %TRUE if the @tree_column can be reordered by the user.
2367  *
2368  * Return value: %TRUE if the @tree_column can be reordered by the user.
2369  **/
2370 gboolean
2371 gtk_tree_view_column_get_reorderable (GtkTreeViewColumn *tree_column)
2372 {
2373   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2374
2375   return tree_column->priv->reorderable;
2376 }
2377
2378
2379 /**
2380  * gtk_tree_view_column_set_sort_column_id:
2381  * @tree_column: a #GtkTreeViewColumn
2382  * @sort_column_id: The @sort_column_id of the model to sort on.
2383  *
2384  * Sets the logical @sort_column_id that this column sorts on when this column
2385  * is selected for sorting.  Doing so makes the column header clickable.
2386  **/
2387 void
2388 gtk_tree_view_column_set_sort_column_id (GtkTreeViewColumn *tree_column,
2389                                          gint               sort_column_id)
2390 {
2391   GtkTreeViewColumnPrivate *priv;
2392
2393   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2394   g_return_if_fail (sort_column_id >= -1);
2395
2396   priv = tree_column->priv;
2397
2398   if (priv->sort_column_id == sort_column_id)
2399     return;
2400
2401   priv->sort_column_id = sort_column_id;
2402
2403   /* Handle unsetting the id */
2404   if (sort_column_id == -1)
2405     {
2406       GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
2407
2408       if (priv->sort_clicked_signal)
2409         {
2410           g_signal_handler_disconnect (tree_column, priv->sort_clicked_signal);
2411           priv->sort_clicked_signal = 0;
2412         }
2413
2414       if (priv->sort_column_changed_signal)
2415         {
2416           g_signal_handler_disconnect (model, priv->sort_column_changed_signal);
2417           priv->sort_column_changed_signal = 0;
2418         }
2419
2420       gtk_tree_view_column_set_sort_order (tree_column, GTK_SORT_ASCENDING);
2421       gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
2422       gtk_tree_view_column_set_clickable (tree_column, FALSE);
2423       g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2424       return;
2425     }
2426
2427   gtk_tree_view_column_set_clickable (tree_column, TRUE);
2428
2429   if (! priv->sort_clicked_signal)
2430     priv->sort_clicked_signal = g_signal_connect (tree_column,
2431                                                   "clicked",
2432                                                   G_CALLBACK (gtk_tree_view_column_sort),
2433                                                   NULL);
2434
2435   gtk_tree_view_column_setup_sort_column_id_callback (tree_column);
2436   g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2437 }
2438
2439 /**
2440  * gtk_tree_view_column_get_sort_column_id:
2441  * @tree_column: a #GtkTreeViewColumn
2442  *
2443  * Gets the logical @sort_column_id that the model sorts on when this
2444  * column is selected for sorting.
2445  * See gtk_tree_view_column_set_sort_column_id().
2446  *
2447  * Return value: the current @sort_column_id for this column, or -1 if
2448  *               this column can't be used for sorting.
2449  **/
2450 gint
2451 gtk_tree_view_column_get_sort_column_id (GtkTreeViewColumn *tree_column)
2452 {
2453   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2454
2455   return tree_column->priv->sort_column_id;
2456 }
2457
2458 /**
2459  * gtk_tree_view_column_set_sort_indicator:
2460  * @tree_column: a #GtkTreeViewColumn
2461  * @setting: %TRUE to display an indicator that the column is sorted
2462  *
2463  * Call this function with a @setting of %TRUE to display an arrow in
2464  * the header button indicating the column is sorted. Call
2465  * gtk_tree_view_column_set_sort_order() to change the direction of
2466  * the arrow.
2467  *
2468  **/
2469 void
2470 gtk_tree_view_column_set_sort_indicator (GtkTreeViewColumn     *tree_column,
2471                                          gboolean               setting)
2472 {
2473   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2474
2475   setting = setting != FALSE;
2476
2477   if (setting == tree_column->priv->show_sort_indicator)
2478     return;
2479
2480   tree_column->priv->show_sort_indicator = setting;
2481   gtk_tree_view_column_update_button (tree_column);
2482   g_object_notify (G_OBJECT (tree_column), "sort-indicator");
2483 }
2484
2485 /**
2486  * gtk_tree_view_column_get_sort_indicator:
2487  * @tree_column: a #GtkTreeViewColumn
2488  *
2489  * Gets the value set by gtk_tree_view_column_set_sort_indicator().
2490  *
2491  * Return value: whether the sort indicator arrow is displayed
2492  **/
2493 gboolean
2494 gtk_tree_view_column_get_sort_indicator  (GtkTreeViewColumn     *tree_column)
2495 {
2496   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2497
2498   return tree_column->priv->show_sort_indicator;
2499 }
2500
2501 /**
2502  * gtk_tree_view_column_set_sort_order:
2503  * @tree_column: a #GtkTreeViewColumn
2504  * @order: sort order that the sort indicator should indicate
2505  *
2506  * Changes the appearance of the sort indicator.
2507  *
2508  * This <emphasis>does not</emphasis> actually sort the model.  Use
2509  * gtk_tree_view_column_set_sort_column_id() if you want automatic sorting
2510  * support.  This function is primarily for custom sorting behavior, and should
2511  * be used in conjunction with gtk_tree_sortable_set_sort_column() to do
2512  * that. For custom models, the mechanism will vary.
2513  *
2514  * The sort indicator changes direction to indicate normal sort or reverse sort.
2515  * Note that you must have the sort indicator enabled to see anything when
2516  * calling this function; see gtk_tree_view_column_set_sort_indicator().
2517  **/
2518 void
2519 gtk_tree_view_column_set_sort_order      (GtkTreeViewColumn     *tree_column,
2520                                           GtkSortType            order)
2521 {
2522   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2523
2524   if (order == tree_column->priv->sort_order)
2525     return;
2526
2527   tree_column->priv->sort_order = order;
2528   gtk_tree_view_column_update_button (tree_column);
2529   g_object_notify (G_OBJECT (tree_column), "sort-order");
2530 }
2531
2532 /**
2533  * gtk_tree_view_column_get_sort_order:
2534  * @tree_column: a #GtkTreeViewColumn
2535  *
2536  * Gets the value set by gtk_tree_view_column_set_sort_order().
2537  *
2538  * Return value: the sort order the sort indicator is indicating
2539  **/
2540 GtkSortType
2541 gtk_tree_view_column_get_sort_order      (GtkTreeViewColumn     *tree_column)
2542 {
2543   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2544
2545   return tree_column->priv->sort_order;
2546 }
2547
2548 /**
2549  * gtk_tree_view_column_cell_set_cell_data:
2550  * @tree_column: A #GtkTreeViewColumn.
2551  * @tree_model: The #GtkTreeModel to to get the cell renderers attributes from.
2552  * @iter: The #GtkTreeIter to to get the cell renderer's attributes from.
2553  * @is_expander: %TRUE, if the row has children
2554  * @is_expanded: %TRUE, if the row has visible children
2555  *
2556  * Sets the cell renderer based on the @tree_model and @iter.  That is, for
2557  * every attribute mapping in @tree_column, it will get a value from the set
2558  * column on the @iter, and use that value to set the attribute on the cell
2559  * renderer.  This is used primarily by the #GtkTreeView.
2560  **/
2561 void
2562 gtk_tree_view_column_cell_set_cell_data (GtkTreeViewColumn *tree_column,
2563                                          GtkTreeModel      *tree_model,
2564                                          GtkTreeIter       *iter,
2565                                          gboolean           is_expander,
2566                                          gboolean           is_expanded)
2567 {
2568   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2569
2570   if (tree_model == NULL)
2571     return;
2572
2573   gtk_cell_area_apply_attributes (tree_column->priv->cell_area, tree_model, iter,
2574                                   is_expander, is_expanded);
2575 }
2576
2577 /**
2578  * gtk_tree_view_column_cell_get_size:
2579  * @tree_column: A #GtkTreeViewColumn.
2580  * @cell_area: (allow-none): The area a cell in the column will be allocated, or %NULL
2581  * @x_offset: (allow-none): location to return x offset of a cell relative to @cell_area, or %NULL
2582  * @y_offset: (allow-none): location to return y offset of a cell relative to @cell_area, or %NULL
2583  * @width: (allow-none): location to return width needed to render a cell, or %NULL
2584  * @height: (allow-none): location to return height needed to render a cell, or %NULL
2585  *
2586  * Obtains the width and height needed to render the column.  This is used
2587  * primarily by the #GtkTreeView.
2588  **/
2589 void
2590 gtk_tree_view_column_cell_get_size (GtkTreeViewColumn  *tree_column,
2591                                     const GdkRectangle *cell_area,
2592                                     gint               *x_offset,
2593                                     gint               *y_offset,
2594                                     gint               *width,
2595                                     gint               *height)
2596 {
2597   GtkTreeViewColumnPrivate *priv;
2598   int focus_line_width;
2599
2600   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2601
2602   priv = tree_column->priv;
2603
2604   if (height)
2605     * height = 0;
2606   if (width)
2607     * width = 0;
2608
2609   /* FIXME: This is a temporary hack to get things to allocate mostly right.
2610    *
2611    * We will add twice the focus-line-width to the for-width
2612    * parameter below.  If we do not do this, the height returned is the
2613    * height for two lines of text instead of one.  It feels like some lines
2614    * get less width than expected (due to subtraction of focus_line_width?)
2615    * and will unnecessarily wrap.
2616    */
2617   gtk_widget_style_get (priv->tree_view,
2618                         "focus-line-width", &focus_line_width,
2619                         NULL);
2620
2621   g_signal_handler_block (priv->cell_area_context,
2622                           priv->context_changed_signal);
2623
2624   gtk_cell_area_get_preferred_width (priv->cell_area,
2625                                      priv->cell_area_context,
2626                                      priv->tree_view,
2627                                      width, NULL);
2628   gtk_cell_area_get_preferred_height_for_width (priv->cell_area,
2629                                                 priv->cell_area_context,
2630                                                 priv->tree_view,
2631                                                 *width + focus_line_width * 2,
2632                                                 height,
2633                                                 NULL);
2634
2635   g_signal_handler_unblock (priv->cell_area_context,
2636                             priv->context_changed_signal);
2637
2638
2639   if (height)
2640     * height = min_height;
2641   if (width)
2642     * width = min_width;
2643
2644 }
2645
2646 /**
2647  * gtk_tree_view_column_cell_render:
2648  * @tree_column: A #GtkTreeViewColumn.
2649  * @cr: cairo context to draw to
2650  * @background_area: entire cell area (including tree expanders and maybe padding on the sides)
2651  * @cell_area: area normally rendered by a cell renderer
2652  * @flags: flags that affect rendering
2653  *
2654  * Renders the cell contained by #tree_column. This is used primarily by the
2655  * #GtkTreeView.
2656  **/
2657 void
2658 _gtk_tree_view_column_cell_render (GtkTreeViewColumn  *tree_column,
2659                                    cairo_t            *cr,
2660                                    const GdkRectangle *background_area,
2661                                    const GdkRectangle *cell_area,
2662                                    guint               flags,
2663                                    gboolean            draw_focus)
2664 {
2665   GtkTreeViewColumnPrivate *priv;
2666
2667   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2668   g_return_if_fail (cr != NULL);
2669   g_return_if_fail (background_area != NULL);
2670   g_return_if_fail (cell_area != NULL);
2671
2672   priv = tree_column->priv;
2673
2674   cairo_save (cr);
2675
2676   gtk_cell_area_render (priv->cell_area, priv->cell_area_context,
2677                         priv->tree_view, cr,
2678                         background_area, cell_area, flags,
2679                         draw_focus);
2680
2681   cairo_restore (cr);
2682 }
2683
2684 gboolean
2685 _gtk_tree_view_column_cell_event (GtkTreeViewColumn  *tree_column,
2686                                   GtkCellEditable   **editable_widget,
2687                                   GdkEvent           *event,
2688                                   gchar              *path_string,
2689                                   const GdkRectangle *background_area,
2690                                   const GdkRectangle *cell_area,
2691                                   guint               flags)
2692 {
2693   GtkTreeViewColumnPrivate *priv;
2694
2695   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2696
2697   priv = tree_column->priv;
2698
2699   /* FIXME: Should we pass background area here as well?
2700    * What will happen to the path_string and editable widget
2701    * variables?
2702    *
2703    * Answer, No dont pass background area... editable widgets
2704    * grab the pointer and keyboard so the treeview doesnt
2705    * recieve these events while editable widgets are editing.
2706    *
2707    * Also it's important that gtk_cell_area_apply_attributes be
2708    * called before passing the event to the cell (maybe we need to
2709    * instead use the path_string here to apply the attributes ?,
2710    * if the attributes are applied, the underlying CellArea knows
2711    * the path string, which is expected when handling events).
2712    */
2713   return gtk_cell_area_event (priv->cell_area,
2714                               priv->cell_area_context,
2715                               priv->tree_view,
2716                               event,
2717                               cell_area,
2718                               flags);
2719 }
2720
2721 void
2722 _gtk_tree_view_column_get_focus_area (GtkTreeViewColumn  *tree_column,
2723                                       const GdkRectangle *background_area,
2724                                       const GdkRectangle *cell_area,
2725                                       GdkRectangle       *focus_area)
2726 {
2727   /* FIXME */
2728 #if 0
2729   gtk_tree_view_column_cell_process_action (tree_column,
2730                                             NULL,
2731                                             background_area,
2732                                             cell_area,
2733                                             0,
2734                                             CELL_ACTION_FOCUS,
2735                                             focus_area,
2736                                             NULL, NULL, NULL);
2737 #endif
2738 }
2739
2740
2741 gboolean
2742 _gtk_tree_view_column_cell_focus (GtkTreeViewColumn *tree_column,
2743                                   gint               count,
2744                                   gboolean           left,
2745                                   gboolean           right)
2746 {
2747   gboolean rtl;
2748   GtkDirectionType direction = 0;
2749   GtkTreeViewColumnPrivate *priv = tree_column->priv;
2750
2751   rtl = gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL;
2752
2753   switch (count)
2754     {
2755       case -1:
2756         direction = GTK_DIR_LEFT;
2757         break;
2758
2759       case 1:
2760         direction = GTK_DIR_RIGHT;
2761         break;
2762     }
2763
2764   /* if we are the current focus column and have multiple editable cells,
2765    * try to select the next one, else move the focus to the next column
2766    */
2767
2768   /* XXX Access to GtkTreeViewPrivate */
2769   if (GTK_TREE_VIEW (priv->tree_view)->priv->focus_column == tree_column)
2770     {
2771       if (gtk_cell_area_focus (priv->cell_area, direction))
2772         /* Focus stays in this column, so we are done */
2773         return TRUE;
2774
2775       /* FIXME: RTL support for the following: */
2776       if (count == -1 && !left)
2777         {
2778           direction = GTK_DIR_RIGHT;
2779           gtk_cell_area_focus (priv->cell_area, direction);
2780         }
2781       else if (count == 1 && !right)
2782         {
2783           direction = GTK_DIR_LEFT;
2784           gtk_cell_area_focus (priv->cell_area, direction);
2785         }
2786
2787       return FALSE;
2788     }
2789
2790   return gtk_cell_area_focus (priv->cell_area, direction);
2791 }
2792
2793 /**
2794  * gtk_tree_view_column_cell_is_visible:
2795  * @tree_column: A #GtkTreeViewColumn
2796  *
2797  * Returns %TRUE if any of the cells packed into the @tree_column are visible.
2798  * For this to be meaningful, you must first initialize the cells with
2799  * gtk_tree_view_column_cell_set_cell_data()
2800  *
2801  * Return value: %TRUE, if any of the cells packed into the @tree_column are currently visible
2802  **/
2803 gboolean
2804 gtk_tree_view_column_cell_is_visible (GtkTreeViewColumn *tree_column)
2805 {
2806   GList *list;
2807   GList *cells;
2808   GtkTreeViewColumnPrivate *priv;
2809
2810   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2811
2812   priv = tree_column->priv;
2813
2814   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
2815   for (list = cells; list; list = list->next)
2816     {
2817       if (gtk_cell_renderer_get_visible (list->data))
2818         {
2819           g_list_free (cells);
2820           return TRUE;
2821         }
2822     }
2823
2824   g_list_free (cells);
2825
2826   return FALSE;
2827 }
2828
2829 /**
2830  * gtk_tree_view_column_focus_cell:
2831  * @tree_column: A #GtkTreeViewColumn
2832  * @cell: A #GtkCellRenderer
2833  *
2834  * Sets the current keyboard focus to be at @cell, if the column contains
2835  * 2 or more editable and activatable cells.
2836  *
2837  * Since: 2.2
2838  **/
2839 void
2840 gtk_tree_view_column_focus_cell (GtkTreeViewColumn *tree_column,
2841                                  GtkCellRenderer   *cell)
2842 {
2843   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2844   g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
2845
2846   gtk_cell_area_set_focus_cell (tree_column->priv->cell_area, cell);
2847 }
2848
2849 void
2850 _gtk_tree_view_column_cell_set_dirty (GtkTreeViewColumn *tree_column,
2851                                       gboolean           install_handler)
2852 {
2853   GtkTreeViewColumnPrivate *priv = tree_column->priv;
2854
2855   priv->dirty = TRUE;
2856   priv->requested_width = -1;
2857   priv->width = 0;
2858
2859   if (priv->tree_view &&
2860       gtk_widget_get_realized (priv->tree_view))
2861     {
2862       if (install_handler)
2863         _gtk_tree_view_install_mark_rows_col_dirty (GTK_TREE_VIEW (priv->tree_view));
2864       else
2865         /* XXX Access to GtkTreeViewPrivate */
2866         GTK_TREE_VIEW (priv->tree_view)->priv->mark_rows_col_dirty = TRUE;
2867       gtk_widget_queue_resize (priv->tree_view);
2868     }
2869 }
2870
2871 gboolean
2872 _gtk_tree_view_column_cell_get_dirty (GtkTreeViewColumn  *tree_column)
2873 {
2874   return tree_column->priv->dirty;
2875 }
2876
2877 /**
2878  * gtk_tree_view_column_cell_get_position:
2879  * @tree_column: a #GtkTreeViewColumn
2880  * @cell_renderer: a #GtkCellRenderer
2881  * @start_pos: return location for the horizontal position of @cell within
2882  *            @tree_column, may be %NULL
2883  * @width: return location for the width of @cell, may be %NULL
2884  *
2885  * Obtains the horizontal position and size of a cell in a column. If the
2886  * cell is not found in the column, @start_pos and @width are not changed and
2887  * %FALSE is returned.
2888  *
2889  * Return value: %TRUE if @cell belongs to @tree_column.
2890  */
2891 gboolean
2892 gtk_tree_view_column_cell_get_position (GtkTreeViewColumn *tree_column,
2893                                         GtkCellRenderer   *cell_renderer,
2894                                         gint              *start_pos,
2895                                         gint              *width)
2896 {
2897   GtkTreeViewColumnPrivate *priv;
2898   GdkRectangle zero_cell_area = { 0, };
2899   GdkRectangle allocation;
2900
2901   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2902   g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell_renderer), FALSE);
2903
2904   priv = tree_column->priv;
2905
2906   /* FIXME: Could use a boolean return value for invalid cells */
2907   gtk_cell_area_get_cell_allocation (priv->cell_area,
2908                                      priv->cell_area_context,
2909                                      priv->tree_view,
2910                                      cell_renderer,
2911                                      &zero_cell_area,
2912                                      &allocation);
2913
2914   if (start_pos)
2915     *start_pos = allocation.x;
2916   if (width)
2917     *width = allocation.width;
2918
2919   return TRUE;
2920 }
2921
2922 /**
2923  * gtk_tree_view_column_queue_resize:
2924  * @tree_column: A #GtkTreeViewColumn
2925  *
2926  * Flags the column, and the cell renderers added to this column, to have
2927  * their sizes renegotiated.
2928  *
2929  * Since: 2.8
2930  **/
2931 void
2932 gtk_tree_view_column_queue_resize (GtkTreeViewColumn *tree_column)
2933 {
2934   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2935
2936   if (tree_column->priv->tree_view)
2937     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
2938 }
2939
2940 /**
2941  * gtk_tree_view_column_get_tree_view:
2942  * @tree_column: A #GtkTreeViewColumn
2943  *
2944  * Returns the #GtkTreeView wherein @tree_column has been inserted.
2945  * If @column is currently not inserted in any tree view, %NULL is
2946  * returned.
2947  *
2948  * Return value: (transfer none): The tree view wherein @column has
2949  *     been inserted if any, %NULL otherwise.
2950  *
2951  * Since: 2.12
2952  */
2953 GtkWidget *
2954 gtk_tree_view_column_get_tree_view (GtkTreeViewColumn *tree_column)
2955 {
2956   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2957
2958   return tree_column->priv->tree_view;
2959 }
2960
2961 /**
2962  * gtk_tree_view_column_get_button:
2963  * @tree_column: A #GtkTreeViewColumn
2964  *
2965  * Returns the button used in the treeview column header
2966  *
2967  * Return value: (transfer none): The button for the column header.
2968  *
2969  * Since: 3.0
2970  */
2971 GtkWidget *
2972 gtk_tree_view_column_get_button (GtkTreeViewColumn *tree_column)
2973 {
2974   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2975
2976   return tree_column->priv->button;
2977 }
2978
2979 GdkWindow *
2980 _gtk_tree_view_column_get_window (GtkTreeViewColumn  *column)
2981 {
2982   return column->priv->window;
2983 }
2984
2985 void
2986 _gtk_tree_view_column_set_requested_width (GtkTreeViewColumn  *column,
2987                                            gint                width)
2988 {
2989   column->priv->requested_width = width;
2990 }
2991
2992 gint
2993 _gtk_tree_view_column_get_requested_width (GtkTreeViewColumn  *column)
2994 {
2995   return column->priv->requested_width;
2996 }
2997
2998 void
2999 _gtk_tree_view_column_set_resized_width (GtkTreeViewColumn  *column,
3000                                          gint                width)
3001 {
3002   column->priv->resized_width = width;
3003 }
3004
3005 gint
3006 _gtk_tree_view_column_get_resized_width (GtkTreeViewColumn  *column)
3007 {
3008   return column->priv->resized_width;
3009 }
3010
3011 void
3012 _gtk_tree_view_column_set_use_resized_width (GtkTreeViewColumn  *column,
3013                                              gboolean            use_resized_width)
3014 {
3015   column->priv->use_resized_width = use_resized_width;
3016 }
3017
3018 gboolean
3019 _gtk_tree_view_column_get_use_resized_width (GtkTreeViewColumn  *column)
3020 {
3021   return column->priv->use_resized_width;
3022 }
3023
3024 gint
3025 _gtk_tree_view_column_get_drag_x (GtkTreeViewColumn  *column)
3026 {
3027   return column->priv->drag_x;
3028 }
3029
3030 GtkCellAreaContext *
3031 _gtk_tree_view_column_get_context (GtkTreeViewColumn  *column)
3032 {
3033   return column->priv->cell_area_context;
3034 }