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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "config.h"
  19
  20 #include "gtktreeviewcolumn.h"
  21
  22 #include <string.h>
  23
  24 #include "gtktreeview.h"
  25 #include "gtktreeprivate.h"
  26 #include "gtkcelllayout.h"
  27 #include "gtkbutton.h"
  28 #include "gtkalignment.h"
  29 #include "gtklabel.h"
  30 #include "gtkbox.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkarrow.h"
  33 #include "gtkcellareacontext.h"
  34 #include "gtkcellareabox.h"
  35 #include "gtkprivate.h"
  36 #include "gtkintl.h"
  37 #include "gtktypebuiltins.h"
  38 #include "a11y/gtktreeviewaccessibleprivate.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 void       gtk_tree_view_column_ensure_cell_area        (GtkTreeViewColumn      *column,
  79                                                                 GtkCellArea            *cell_area);
  80
  81 static GtkCellArea *gtk_tree_view_column_cell_layout_get_area  (GtkCellLayout           *cell_layout);
  82
  83 /* Button handling code */
  84 static void gtk_tree_view_column_create_button                 (GtkTreeViewColumn       *tree_column);
  85 static void gtk_tree_view_column_update_button                 (GtkTreeViewColumn       *tree_column);
  86
  87 /* Button signal handlers */
  88 static gint gtk_tree_view_column_button_event                  (GtkWidget               *widget,
  89                                                                 GdkEvent                *event,
  90                                                                 gpointer                 data);
  91 static void gtk_tree_view_column_button_clicked                (GtkWidget               *widget,
  92                                                                 gpointer                 data);
  93 static gboolean gtk_tree_view_column_mnemonic_activate         (GtkWidget *widget,
  94                                                                 gboolean   group_cycling,
  95                                                                 gpointer   data);
  96
  97 /* Property handlers */
  98 static void gtk_tree_view_model_sort_column_changed            (GtkTreeSortable         *sortable,
  99                                                                 GtkTreeViewColumn       *tree_column);
 100
 101 /* GtkCellArea/GtkCellAreaContext callbacks */
 102 static void gtk_tree_view_column_context_changed               (GtkCellAreaContext      *context,
 103                                                                 GParamSpec              *pspec,
 104                                                                 GtkTreeViewColumn       *tree_column);
 105 static void gtk_tree_view_column_add_editable_callback         (GtkCellArea             *area,
 106                                                                 GtkCellRenderer         *renderer,
 107                                                                 GtkCellEditable         *edit_widget,
 108                                                                 GdkRectangle            *cell_area,
 109                                                                 const gchar             *path_string,
 110                                                                 gpointer                 user_data);
 111 static void gtk_tree_view_column_remove_editable_callback      (GtkCellArea             *area,
 112                                                                 GtkCellRenderer         *renderer,
 113                                                                 GtkCellEditable         *edit_widget,
 114                                                                 gpointer                 user_data);
 115
 116 /* Internal functions */
 117 static void gtk_tree_view_column_sort                          (GtkTreeViewColumn       *tree_column,
 118                                                                 gpointer                 data);
 119 static void gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn       *tree_column);
 120 static void gtk_tree_view_column_set_attributesv               (GtkTreeViewColumn       *tree_column,
 121                                                                 GtkCellRenderer         *cell_renderer,
 122                                                                 va_list                  args);
 123
 124 /* GtkBuildable implementation */
 125 static void gtk_tree_view_column_buildable_init                 (GtkBuildableIface     *iface);
 126
 127
 128 struct _GtkTreeViewColumnPrivate
 129 {
 130   GtkWidget *tree_view;
 131   GtkWidget *button;
 132   GtkWidget *child;
 133   GtkWidget *arrow;
 134   GtkWidget *alignment;
 135   GdkWindow *window;
 136   gfloat xalign;
 137   gulong property_changed_signal;
 138
 139   /* Sizing fields */
 140   /* see gtk+/doc/tree-column-sizing.txt for more information on them */
 141   GtkTreeViewColumnSizing column_type;
 142   gint padding;
 143   gint x_offset;
 144   gint width;
 145   gint fixed_width;
 146   gint min_width;
 147   gint max_width;
 148
 149   /* dragging columns */
 150   gint drag_x;
 151   gint drag_y;
 152
 153   gchar *title;
 154
 155   /* Sorting */
 156   gulong      sort_clicked_signal;
 157   gulong      sort_column_changed_signal;
 158   gint        sort_column_id;
 159   GtkSortType sort_order;
 160
 161   /* Cell area */
 162   GtkCellArea        *cell_area;
 163   GtkCellAreaContext *cell_area_context;
 164   gulong              add_editable_signal;
 165   gulong              remove_editable_signal;
 166   gulong              context_changed_signal;
 167
 168   /* Flags */
 169   guint visible             : 1;
 170   guint resizable           : 1;
 171   guint clickable           : 1;
 172   guint dirty               : 1;
 173   guint show_sort_indicator : 1;
 174   guint maybe_reordered     : 1;
 175   guint reorderable         : 1;
 176   guint expand              : 1;
 177 };
 178
 179 enum
 180 {
 181   PROP_0,
 182   PROP_VISIBLE,
 183   PROP_RESIZABLE,
 184   PROP_X_OFFSET,
 185   PROP_WIDTH,
 186   PROP_SPACING,
 187   PROP_SIZING,
 188   PROP_FIXED_WIDTH,
 189   PROP_MIN_WIDTH,
 190   PROP_MAX_WIDTH,
 191   PROP_TITLE,
 192   PROP_EXPAND,
 193   PROP_CLICKABLE,
 194   PROP_WIDGET,
 195   PROP_ALIGNMENT,
 196   PROP_REORDERABLE,
 197   PROP_SORT_INDICATOR,
 198   PROP_SORT_ORDER,
 199   PROP_SORT_COLUMN_ID,
 200   PROP_CELL_AREA
 201 };
 202
 203 enum
 204 {
 205   CLICKED,
 206   LAST_SIGNAL
 207 };
 208
 209 static guint tree_column_signals[LAST_SIGNAL] = { 0 };
 210
 211 G_DEFINE_TYPE_WITH_CODE (GtkTreeViewColumn, gtk_tree_view_column, G_TYPE_INITIALLY_UNOWNED,
 212                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 213                                                 gtk_tree_view_column_cell_layout_init)
 214                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 215                                                 gtk_tree_view_column_buildable_init))
 216
 217
 218 static void
 219 gtk_tree_view_column_class_init (GtkTreeViewColumnClass *class)
 220 {
 221   GObjectClass *object_class;
 222
 223   object_class = (GObjectClass*) class;
 224
 225   class->clicked = NULL;
 226
 227   object_class->constructor = gtk_tree_view_column_constructor;
 228   object_class->finalize = gtk_tree_view_column_finalize;
 229   object_class->dispose = gtk_tree_view_column_dispose;
 230   object_class->set_property = gtk_tree_view_column_set_property;
 231   object_class->get_property = gtk_tree_view_column_get_property;
 232
 233   tree_column_signals[CLICKED] =
 234     g_signal_new (I_("clicked"),
 235                   G_OBJECT_CLASS_TYPE (object_class),
 236                   G_SIGNAL_RUN_LAST,
 237                   G_STRUCT_OFFSET (GtkTreeViewColumnClass, clicked),
 238                   NULL, NULL,
 239                   _gtk_marshal_VOID__VOID,
 240                   G_TYPE_NONE, 0);
 241
 242   g_object_class_install_property (object_class,
 243                                    PROP_VISIBLE,
 244                                    g_param_spec_boolean ("visible",
 245                                                         P_("Visible"),
 246                                                         P_("Whether to display the column"),
 247                                                          TRUE,
 248                                                          GTK_PARAM_READWRITE));
 249
 250   g_object_class_install_property (object_class,
 251                                    PROP_RESIZABLE,
 252                                    g_param_spec_boolean ("resizable",
 253                                                          P_("Resizable"),
 254                                                          P_("Column is user-resizable"),
 255                                                          FALSE,
 256                                                          GTK_PARAM_READWRITE));
 257
 258   g_object_class_install_property (object_class,
 259                                    PROP_X_OFFSET,
 260                                    g_param_spec_int ("x-offset",
 261                                                      P_("X position"),
 262                                                      P_("Current X position of the column"),
 263                                                      -G_MAXINT,
 264                                                      G_MAXINT,
 265                                                      0,
 266                                                      GTK_PARAM_READABLE));
 267
 268   g_object_class_install_property (object_class,
 269                                    PROP_WIDTH,
 270                                    g_param_spec_int ("width",
 271                                                      P_("Width"),
 272                                                      P_("Current width of the column"),
 273                                                      0,
 274                                                      G_MAXINT,
 275                                                      0,
 276                                                      GTK_PARAM_READABLE));
 277   g_object_class_install_property (object_class,
 278                                    PROP_SPACING,
 279                                    g_param_spec_int ("spacing",
 280                                                      P_("Spacing"),
 281                                                      P_("Space which is inserted between cells"),
 282                                                      0,
 283                                                      G_MAXINT,
 284                                                      0,
 285                                                      GTK_PARAM_READWRITE));
 286   g_object_class_install_property (object_class,
 287                                    PROP_SIZING,
 288                                    g_param_spec_enum ("sizing",
 289                                                       P_("Sizing"),
 290                                                       P_("Resize mode of the column"),
 291                                                       GTK_TYPE_TREE_VIEW_COLUMN_SIZING,
 292                                                       GTK_TREE_VIEW_COLUMN_GROW_ONLY,
 293                                                       GTK_PARAM_READWRITE));
 294
 295   g_object_class_install_property (object_class,
 296                                    PROP_FIXED_WIDTH,
 297                                    g_param_spec_int ("fixed-width",
 298                                                      P_("Fixed Width"),
 299                                                      P_("Current fixed width of the column"),
 300                                                      -1,
 301                                                      G_MAXINT,
 302                                                      -1,
 303                                                      GTK_PARAM_READWRITE));
 304
 305   g_object_class_install_property (object_class,
 306                                    PROP_MIN_WIDTH,
 307                                    g_param_spec_int ("min-width",
 308                                                      P_("Minimum Width"),
 309                                                      P_("Minimum allowed width of the column"),
 310                                                      -1,
 311                                                      G_MAXINT,
 312                                                      -1,
 313                                                      GTK_PARAM_READWRITE));
 314
 315   g_object_class_install_property (object_class,
 316                                    PROP_MAX_WIDTH,
 317                                    g_param_spec_int ("max-width",
 318                                                      P_("Maximum Width"),
 319                                                      P_("Maximum allowed width of the column"),
 320                                                      -1,
 321                                                      G_MAXINT,
 322                                                      -1,
 323                                                      GTK_PARAM_READWRITE));
 324
 325   g_object_class_install_property (object_class,
 326                                    PROP_TITLE,
 327                                    g_param_spec_string ("title",
 328                                                         P_("Title"),
 329                                                         P_("Title to appear in column header"),
 330                                                         "",
 331                                                         GTK_PARAM_READWRITE));
 332
 333   g_object_class_install_property (object_class,
 334                                    PROP_EXPAND,
 335                                    g_param_spec_boolean ("expand",
 336                                                          P_("Expand"),
 337                                                          P_("Column gets share of extra width allocated to the widget"),
 338                                                          FALSE,
 339                                                          GTK_PARAM_READWRITE));
 340
 341   g_object_class_install_property (object_class,
 342                                    PROP_CLICKABLE,
 343                                    g_param_spec_boolean ("clickable",
 344                                                         P_("Clickable"),
 345                                                         P_("Whether the header can be clicked"),
 346                                                          FALSE,
 347                                                          GTK_PARAM_READWRITE));
 348
 349
 350   g_object_class_install_property (object_class,
 351                                    PROP_WIDGET,
 352                                    g_param_spec_object ("widget",
 353                                                         P_("Widget"),
 354                                                         P_("Widget to put in column header button instead of column title"),
 355                                                         GTK_TYPE_WIDGET,
 356                                                         GTK_PARAM_READWRITE));
 357
 358   g_object_class_install_property (object_class,
 359                                    PROP_ALIGNMENT,
 360                                    g_param_spec_float ("alignment",
 361                                                        P_("Alignment"),
 362                                                        P_("X Alignment of the column header text or widget"),
 363                                                        0.0,
 364                                                        1.0,
 365                                                        0.0,
 366                                                        GTK_PARAM_READWRITE));
 367
 368   g_object_class_install_property (object_class,
 369                                    PROP_REORDERABLE,
 370                                    g_param_spec_boolean ("reorderable",
 371                                                          P_("Reorderable"),
 372                                                          P_("Whether the column can be reordered around the headers"),
 373                                                          FALSE,
 374                                                          GTK_PARAM_READWRITE));
 375
 376   g_object_class_install_property (object_class,
 377                                    PROP_SORT_INDICATOR,
 378                                    g_param_spec_boolean ("sort-indicator",
 379                                                         P_("Sort indicator"),
 380                                                         P_("Whether to show a sort indicator"),
 381                                                          FALSE,
 382                                                          GTK_PARAM_READWRITE));
 383
 384   g_object_class_install_property (object_class,
 385                                    PROP_SORT_ORDER,
 386                                    g_param_spec_enum ("sort-order",
 387                                                       P_("Sort order"),
 388                                                       P_("Sort direction the sort indicator should indicate"),
 389                                                       GTK_TYPE_SORT_TYPE,
 390                                                       GTK_SORT_ASCENDING,
 391                                                       GTK_PARAM_READWRITE));
 392
 393   /**
 394    * GtkTreeViewColumn:sort-column-id:
 395    *
 396    * Logical sort column ID this column sorts on when selected for sorting. Setting the sort column ID makes the column header
 397    * clickable. Set to -1 to make the column unsortable.
 398    *
 399    * Since: 2.18
 400    **/
 401   g_object_class_install_property (object_class,
 402                                    PROP_SORT_COLUMN_ID,
 403                                    g_param_spec_int ("sort-column-id",
 404                                                      P_("Sort column ID"),
 405                                                      P_("Logical sort column ID this column sorts on when selected for sorting"),
 406                                                      -1,
 407                                                      G_MAXINT,
 408                                                      -1,
 409                                                      GTK_PARAM_READWRITE));
 410
 411   /**
 412    * GtkTreeViewColumn:cell-area:
 413    *
 414    * The #GtkCellArea used to layout cell renderers for this column.
 415    *
 416    * If no area is specified when creating the tree view column with gtk_tree_view_column_new_with_area()
 417    * a horizontally oriented #GtkCellAreaBox will be used.
 418    *
 419    * Since: 3.0
 420    */
 421   g_object_class_install_property (object_class,
 422                                    PROP_CELL_AREA,
 423                                    g_param_spec_object ("cell-area",
 424                                                         P_("Cell Area"),
 425                                                         P_("The GtkCellArea used to layout cells"),
 426                                                         GTK_TYPE_CELL_AREA,
 427                                                         GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 428
 429   g_type_class_add_private (class, sizeof (GtkTreeViewColumnPrivate));
 430 }
 431
 432 static void
 433 gtk_tree_view_column_custom_tag_end (GtkBuildable *buildable,
 434                                      GtkBuilder   *builder,
 435                                      GObject      *child,
 436                                      const gchar  *tagname,
 437                                      gpointer     *data)
 438 {
 439   /* Just ignore the boolean return from here */
 440   _gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data);
 441 }
 442
 443 static void
 444 gtk_tree_view_column_buildable_init (GtkBuildableIface *iface)
 445 {
 446   iface->add_child = _gtk_cell_layout_buildable_add_child;
 447   iface->custom_tag_start = _gtk_cell_layout_buildable_custom_tag_start;
 448   iface->custom_tag_end = gtk_tree_view_column_custom_tag_end;
 449 }
 450
 451 static void
 452 gtk_tree_view_column_cell_layout_init (GtkCellLayoutIface *iface)
 453 {
 454   iface->get_area = gtk_tree_view_column_cell_layout_get_area;
 455 }
 456
 457 static void
 458 gtk_tree_view_column_init (GtkTreeViewColumn *tree_column)
 459 {
 460   GtkTreeViewColumnPrivate *priv;
 461
 462   tree_column->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_column,
 463                                                    GTK_TYPE_TREE_VIEW_COLUMN,
 464                                                    GtkTreeViewColumnPrivate);
 465   priv = tree_column->priv;
 466
 467   priv->button = NULL;
 468   priv->xalign = 0.0;
 469   priv->width = 0;
 470   priv->padding = -1;
 471   priv->min_width = -1;
 472   priv->max_width = -1;
 473   priv->column_type = GTK_TREE_VIEW_COLUMN_GROW_ONLY;
 474   priv->visible = TRUE;
 475   priv->resizable = FALSE;
 476   priv->expand = FALSE;
 477   priv->clickable = FALSE;
 478   priv->dirty = TRUE;
 479   priv->sort_order = GTK_SORT_ASCENDING;
 480   priv->show_sort_indicator = FALSE;
 481   priv->property_changed_signal = 0;
 482   priv->sort_clicked_signal = 0;
 483   priv->sort_column_changed_signal = 0;
 484   priv->sort_column_id = -1;
 485   priv->reorderable = FALSE;
 486   priv->maybe_reordered = FALSE;
 487   priv->fixed_width = -1;
 488   priv->title = g_strdup ("");
 489 }
 490
 491 static GObject *
 492 gtk_tree_view_column_constructor (GType                  type,
 493                                   guint                  n_construct_properties,
 494                                   GObjectConstructParam *construct_properties)
 495 {
 496   GtkTreeViewColumn        *tree_column;
 497   GObject                  *object;
 498
 499   object = G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->constructor
 500     (type, n_construct_properties, construct_properties);
 501
 502   tree_column = (GtkTreeViewColumn *) object;
 503
 504   gtk_tree_view_column_ensure_cell_area (tree_column, NULL);
 505
 506   return object;
 507 }
 508
 509 static void
 510 gtk_tree_view_column_dispose (GObject *object)
 511 {
 512   GtkTreeViewColumn        *tree_column = (GtkTreeViewColumn *) object;
 513   GtkTreeViewColumnPrivate *priv        = tree_column->priv;
 514
 515   /* Remove this column from its treeview,
 516    * in case this column is destroyed before its treeview.
 517    */
 518   if (priv->tree_view)
 519     gtk_tree_view_remove_column (GTK_TREE_VIEW (priv->tree_view), tree_column);
 520
 521   if (priv->cell_area_context)
 522     {
 523       g_signal_handler_disconnect (priv->cell_area_context,
 524                                    priv->context_changed_signal);
 525
 526       g_object_unref (priv->cell_area_context);
 527
 528       priv->cell_area_context = NULL;
 529       priv->context_changed_signal = 0;
 530     }
 531
 532   if (priv->cell_area)
 533     {
 534       g_signal_handler_disconnect (priv->cell_area,
 535                                    priv->add_editable_signal);
 536       g_signal_handler_disconnect (priv->cell_area,
 537                                    priv->remove_editable_signal);
 538
 539       g_object_unref (priv->cell_area);
 540       priv->cell_area = NULL;
 541       priv->add_editable_signal = 0;
 542       priv->remove_editable_signal = 0;
 543     }
 544
 545   if (priv->child)
 546     {
 547       g_object_unref (priv->child);
 548       priv->child = NULL;
 549     }
 550
 551   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->dispose (object);
 552 }
 553
 554 static void
 555 gtk_tree_view_column_finalize (GObject *object)
 556 {
 557   GtkTreeViewColumn        *tree_column = (GtkTreeViewColumn *) object;
 558   GtkTreeViewColumnPrivate *priv        = tree_column->priv;
 559
 560   g_free (priv->title);
 561
 562   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->finalize (object);
 563 }
 564
 565 static void
 566 gtk_tree_view_column_set_property (GObject         *object,
 567                                    guint            prop_id,
 568                                    const GValue    *value,
 569                                    GParamSpec      *pspec)
 570 {
 571   GtkTreeViewColumn *tree_column;
 572   GtkCellArea       *area;
 573
 574   tree_column = GTK_TREE_VIEW_COLUMN (object);
 575
 576   switch (prop_id)
 577     {
 578     case PROP_VISIBLE:
 579       gtk_tree_view_column_set_visible (tree_column,
 580                                         g_value_get_boolean (value));
 581       break;
 582
 583     case PROP_RESIZABLE:
 584       gtk_tree_view_column_set_resizable (tree_column,
 585                                           g_value_get_boolean (value));
 586       break;
 587
 588     case PROP_SIZING:
 589       gtk_tree_view_column_set_sizing (tree_column,
 590                                        g_value_get_enum (value));
 591       break;
 592
 593     case PROP_FIXED_WIDTH:
 594       gtk_tree_view_column_set_fixed_width (tree_column,
 595                                             g_value_get_int (value));
 596       break;
 597
 598     case PROP_MIN_WIDTH:
 599       gtk_tree_view_column_set_min_width (tree_column,
 600                                           g_value_get_int (value));
 601       break;
 602
 603     case PROP_MAX_WIDTH:
 604       gtk_tree_view_column_set_max_width (tree_column,
 605                                           g_value_get_int (value));
 606       break;
 607
 608     case PROP_SPACING:
 609       gtk_tree_view_column_set_spacing (tree_column,
 610                                         g_value_get_int (value));
 611       break;
 612
 613     case PROP_TITLE:
 614       gtk_tree_view_column_set_title (tree_column,
 615                                       g_value_get_string (value));
 616       break;
 617
 618     case PROP_EXPAND:
 619       gtk_tree_view_column_set_expand (tree_column,
 620                                        g_value_get_boolean (value));
 621       break;
 622
 623     case PROP_CLICKABLE:
 624       gtk_tree_view_column_set_clickable (tree_column,
 625                                           g_value_get_boolean (value));
 626       break;
 627
 628     case PROP_WIDGET:
 629       gtk_tree_view_column_set_widget (tree_column,
 630                                        (GtkWidget*) g_value_get_object (value));
 631       break;
 632
 633     case PROP_ALIGNMENT:
 634       gtk_tree_view_column_set_alignment (tree_column,
 635                                           g_value_get_float (value));
 636       break;
 637
 638     case PROP_REORDERABLE:
 639       gtk_tree_view_column_set_reorderable (tree_column,
 640                                             g_value_get_boolean (value));
 641       break;
 642
 643     case PROP_SORT_INDICATOR:
 644       gtk_tree_view_column_set_sort_indicator (tree_column,
 645                                                g_value_get_boolean (value));
 646       break;
 647
 648     case PROP_SORT_ORDER:
 649       gtk_tree_view_column_set_sort_order (tree_column,
 650                                            g_value_get_enum (value));
 651       break;
 652
 653     case PROP_SORT_COLUMN_ID:
 654       gtk_tree_view_column_set_sort_column_id (tree_column,
 655                                                g_value_get_int (value));
 656       break;
 657
 658     case PROP_CELL_AREA:
 659       /* Construct-only, can only be assigned once */
 660       area = g_value_get_object (value);
 661
 662       if (area)
 663         {
 664           if (tree_column->priv->cell_area != NULL)
 665             {
 666               g_warning ("cell-area has already been set, ignoring construct property");
 667               g_object_ref_sink (area);
 668               g_object_unref (area);
 669             }
 670           else
 671             gtk_tree_view_column_ensure_cell_area (tree_column, area);
 672         }
 673       break;
 674
 675     default:
 676       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 677       break;
 678     }
 679 }
 680
 681 static void
 682 gtk_tree_view_column_get_property (GObject         *object,
 683                                    guint            prop_id,
 684                                    GValue          *value,
 685                                    GParamSpec      *pspec)
 686 {
 687   GtkTreeViewColumn *tree_column;
 688
 689   tree_column = GTK_TREE_VIEW_COLUMN (object);
 690
 691   switch (prop_id)
 692     {
 693     case PROP_VISIBLE:
 694       g_value_set_boolean (value,
 695                            gtk_tree_view_column_get_visible (tree_column));
 696       break;
 697
 698     case PROP_RESIZABLE:
 699       g_value_set_boolean (value,
 700                            gtk_tree_view_column_get_resizable (tree_column));
 701       break;
 702
 703     case PROP_X_OFFSET:
 704       g_value_set_int (value,
 705                        gtk_tree_view_column_get_x_offset (tree_column));
 706       break;
 707
 708     case PROP_WIDTH:
 709       g_value_set_int (value,
 710                        gtk_tree_view_column_get_width (tree_column));
 711       break;
 712
 713     case PROP_SPACING:
 714       g_value_set_int (value,
 715                        gtk_tree_view_column_get_spacing (tree_column));
 716       break;
 717
 718     case PROP_SIZING:
 719       g_value_set_enum (value,
 720                         gtk_tree_view_column_get_sizing (tree_column));
 721       break;
 722
 723     case PROP_FIXED_WIDTH:
 724       g_value_set_int (value,
 725                        gtk_tree_view_column_get_fixed_width (tree_column));
 726       break;
 727
 728     case PROP_MIN_WIDTH:
 729       g_value_set_int (value,
 730                        gtk_tree_view_column_get_min_width (tree_column));
 731       break;
 732
 733     case PROP_MAX_WIDTH:
 734       g_value_set_int (value,
 735                        gtk_tree_view_column_get_max_width (tree_column));
 736       break;
 737
 738     case PROP_TITLE:
 739       g_value_set_string (value,
 740                           gtk_tree_view_column_get_title (tree_column));
 741       break;
 742
 743     case PROP_EXPAND:
 744       g_value_set_boolean (value,
 745                           gtk_tree_view_column_get_expand (tree_column));
 746       break;
 747
 748     case PROP_CLICKABLE:
 749       g_value_set_boolean (value,
 750                            gtk_tree_view_column_get_clickable (tree_column));
 751       break;
 752
 753     case PROP_WIDGET:
 754       g_value_set_object (value,
 755                           (GObject*) gtk_tree_view_column_get_widget (tree_column));
 756       break;
 757
 758     case PROP_ALIGNMENT:
 759       g_value_set_float (value,
 760                          gtk_tree_view_column_get_alignment (tree_column));
 761       break;
 762
 763     case PROP_REORDERABLE:
 764       g_value_set_boolean (value,
 765                            gtk_tree_view_column_get_reorderable (tree_column));
 766       break;
 767
 768     case PROP_SORT_INDICATOR:
 769       g_value_set_boolean (value,
 770                            gtk_tree_view_column_get_sort_indicator (tree_column));
 771       break;
 772
 773     case PROP_SORT_ORDER:
 774       g_value_set_enum (value,
 775                         gtk_tree_view_column_get_sort_order (tree_column));
 776       break;
 777
 778     case PROP_SORT_COLUMN_ID:
 779       g_value_set_int (value,
 780                        gtk_tree_view_column_get_sort_column_id (tree_column));
 781       break;
 782
 783     case PROP_CELL_AREA:
 784       g_value_set_object (value, tree_column->priv->cell_area);
 785       break;
 786
 787     default:
 788       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 789       break;
 790     }
 791 }
 792
 793 /* Implementation of GtkCellLayout interface
 794  */
 795
 796 static void
 797 gtk_tree_view_column_ensure_cell_area (GtkTreeViewColumn *column,
 798                                        GtkCellArea       *cell_area)
 799 {
 800   GtkTreeViewColumnPrivate *priv = column->priv;
 801
 802   if (priv->cell_area)
 803     return;
 804
 805   if (cell_area)
 806     priv->cell_area = cell_area;
 807   else
 808     priv->cell_area = gtk_cell_area_box_new ();
 809
 810   g_object_ref_sink (priv->cell_area);
 811
 812   priv->add_editable_signal =
 813     g_signal_connect (priv->cell_area, "add-editable",
 814                       G_CALLBACK (gtk_tree_view_column_add_editable_callback),
 815                       column);
 816   priv->remove_editable_signal =
 817     g_signal_connect (priv->cell_area, "remove-editable",
 818                       G_CALLBACK (gtk_tree_view_column_remove_editable_callback),
 819                       column);
 820
 821   priv->cell_area_context = gtk_cell_area_create_context (priv->cell_area);
 822
 823   priv->context_changed_signal =
 824     g_signal_connect (priv->cell_area_context, "notify",
 825                       G_CALLBACK (gtk_tree_view_column_context_changed),
 826                       column);
 827 }
 828
 829 static GtkCellArea *
 830 gtk_tree_view_column_cell_layout_get_area (GtkCellLayout   *cell_layout)
 831 {
 832   GtkTreeViewColumn        *column = GTK_TREE_VIEW_COLUMN (cell_layout);
 833   GtkTreeViewColumnPrivate *priv   = column->priv;
 834
 835   if (G_UNLIKELY (!priv->cell_area))
 836     gtk_tree_view_column_ensure_cell_area (column, NULL);
 837
 838   return priv->cell_area;
 839 }
 840
 841 /* Button handling code
 842  */
 843 static void
 844 gtk_tree_view_column_create_button (GtkTreeViewColumn *tree_column)
 845 {
 846   GtkTreeViewColumnPrivate *priv = tree_column->priv;
 847   GtkTreeView *tree_view;
 848   GtkWidget *child;
 849   GtkWidget *hbox;
 850
 851   tree_view = (GtkTreeView *) priv->tree_view;
 852
 853   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
 854   g_return_if_fail (priv->button == NULL);
 855
 856   gtk_widget_push_composite_child ();
 857   priv->button = gtk_button_new ();
 858   if (priv->visible)
 859     gtk_widget_show (priv->button);
 860   gtk_widget_add_events (priv->button, GDK_POINTER_MOTION_MASK);
 861   gtk_widget_pop_composite_child ();
 862
 863   /* make sure we own a reference to it as well. */
 864   if (_gtk_tree_view_get_header_window (tree_view))
 865     gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
 866
 867   gtk_widget_set_parent (priv->button, GTK_WIDGET (tree_view));
 868
 869   g_signal_connect (priv->button, "event",
 870                     G_CALLBACK (gtk_tree_view_column_button_event),
 871                     tree_column);
 872   g_signal_connect (priv->button, "clicked",
 873                     G_CALLBACK (gtk_tree_view_column_button_clicked),
 874                     tree_column);
 875
 876   priv->alignment = gtk_alignment_new (priv->xalign, 0.5, 0.0, 0.0);
 877
 878   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
 879   priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 880
 881   if (priv->child)
 882     child = priv->child;
 883   else
 884     {
 885       child = gtk_label_new (priv->title);
 886       gtk_widget_show (child);
 887     }
 888
 889   g_signal_connect (child, "mnemonic-activate",
 890                     G_CALLBACK (gtk_tree_view_column_mnemonic_activate),
 891                     tree_column);
 892
 893   if (priv->xalign <= 0.5)
 894     gtk_box_pack_end (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
 895   else
 896     gtk_box_pack_start (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
 897
 898   gtk_box_pack_start (GTK_BOX (hbox), priv->alignment, TRUE, TRUE, 0);
 899
 900   gtk_container_add (GTK_CONTAINER (priv->alignment), child);
 901   gtk_container_add (GTK_CONTAINER (priv->button), hbox);
 902
 903   gtk_widget_show (hbox);
 904   gtk_widget_show (priv->alignment);
 905   gtk_tree_view_column_update_button (tree_column);
 906 }
 907
 908 static void
 909 gtk_tree_view_column_update_button (GtkTreeViewColumn *tree_column)
 910 {
 911   GtkTreeViewColumnPrivate *priv = tree_column->priv;
 912   gint sort_column_id = -1;
 913   GtkWidget *hbox;
 914   GtkWidget *alignment;
 915   GtkWidget *arrow;
 916   GtkWidget *current_child;
 917   GtkArrowType arrow_type = GTK_ARROW_NONE;
 918   GtkTreeModel *model;
 919
 920   if (priv->tree_view)
 921     model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
 922   else
 923     model = NULL;
 924
 925   /* Create a button if necessary */
 926   if (priv->visible &&
 927       priv->button == NULL &&
 928       priv->tree_view &&
 929       gtk_widget_get_realized (priv->tree_view))
 930     gtk_tree_view_column_create_button (tree_column);
 931
 932   if (! priv->button)
 933     return;
 934
 935   hbox = gtk_bin_get_child (GTK_BIN (priv->button));
 936   alignment = priv->alignment;
 937   arrow = priv->arrow;
 938   current_child = gtk_bin_get_child (GTK_BIN (alignment));
 939
 940   /* Set up the actual button */
 941   gtk_alignment_set (GTK_ALIGNMENT (alignment), priv->xalign,
 942                      0.5, 0.0, 0.0);
 943
 944   if (priv->child)
 945     {
 946       if (current_child != priv->child)
 947         {
 948           gtk_container_remove (GTK_CONTAINER (alignment),
 949                                 current_child);
 950           gtk_container_add (GTK_CONTAINER (alignment),
 951                              priv->child);
 952         }
 953     }
 954   else
 955     {
 956       if (current_child == NULL)
 957         {
 958           current_child = gtk_label_new (NULL);
 959           gtk_widget_show (current_child);
 960           gtk_container_add (GTK_CONTAINER (alignment),
 961                              current_child);
 962         }
 963
 964       g_return_if_fail (GTK_IS_LABEL (current_child));
 965
 966       if (priv->title)
 967         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 968                                           priv->title);
 969       else
 970         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 971                                           "");
 972     }
 973
 974   if (GTK_IS_TREE_SORTABLE (model))
 975     gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
 976                                           &sort_column_id,
 977                                           NULL);
 978
 979   if (priv->show_sort_indicator)
 980     {
 981       gboolean alternative;
 982
 983       g_object_get (gtk_widget_get_settings (priv->tree_view),
 984                     "gtk-alternative-sort-arrows", &alternative,
 985                     NULL);
 986
 987       switch (priv->sort_order)
 988         {
 989           case GTK_SORT_ASCENDING:
 990             arrow_type = alternative ? GTK_ARROW_UP : GTK_ARROW_DOWN;
 991             break;
 992
 993           case GTK_SORT_DESCENDING:
 994             arrow_type = alternative ? GTK_ARROW_DOWN : GTK_ARROW_UP;
 995             break;
 996
 997           default:
 998             g_warning (G_STRLOC": bad sort order");
 999             break;
1000         }
1001     }
1002
1003   gtk_arrow_set (GTK_ARROW (arrow),
1004                  arrow_type,
1005                  GTK_SHADOW_IN);
1006
1007   /* Put arrow on the right if the text is left-or-center justified, and on the
1008    * left otherwise; do this by packing boxes, so flipping text direction will
1009    * reverse things
1010    */
1011   g_object_ref (arrow);
1012   gtk_container_remove (GTK_CONTAINER (hbox), arrow);
1013
1014   if (priv->xalign <= 0.5)
1015     {
1016       gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
1017     }
1018   else
1019     {
1020       gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
1021       /* move it to the front */
1022       gtk_box_reorder_child (GTK_BOX (hbox), arrow, 0);
1023     }
1024   g_object_unref (arrow);
1025
1026   if (priv->show_sort_indicator
1027       || (GTK_IS_TREE_SORTABLE (model) && priv->sort_column_id >= 0))
1028     gtk_widget_show (arrow);
1029   else
1030     gtk_widget_hide (arrow);
1031
1032   /* It's always safe to hide the button.  It isn't always safe to show it, as
1033    * if you show it before it's realized, it'll get the wrong window. */
1034   if (priv->button &&
1035       priv->tree_view != NULL &&
1036       gtk_widget_get_realized (priv->tree_view))
1037     {
1038       if (priv->visible &&
1039           gdk_window_is_visible (_gtk_tree_view_get_header_window (GTK_TREE_VIEW (priv->tree_view))))
1040         {
1041           gtk_widget_show (priv->button);
1042
1043           if (priv->window)
1044             {
1045               if (priv->resizable)
1046                 {
1047                   gdk_window_show (priv->window);
1048                   gdk_window_raise (priv->window);
1049                 }
1050               else
1051                 {
1052                   gdk_window_hide (priv->window);
1053                 }
1054             }
1055         }
1056       else
1057         {
1058           gtk_widget_hide (priv->button);
1059           if (priv->window)
1060             gdk_window_hide (priv->window);
1061         }
1062     }
1063
1064   if (priv->reorderable || priv->clickable)
1065     {
1066       gtk_widget_set_can_focus (priv->button, TRUE);
1067     }
1068   else
1069     {
1070       gtk_widget_set_can_focus (priv->button, FALSE);
1071       if (gtk_widget_has_focus (priv->button))
1072         {
1073           GtkWidget *toplevel = gtk_widget_get_toplevel (priv->tree_view);
1074           if (gtk_widget_is_toplevel (toplevel))
1075             {
1076               gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
1077             }
1078         }
1079     }
1080   /* Queue a resize on the assumption that we always want to catch all changes
1081    * and columns don't change all that often.
1082    */
1083   if (gtk_widget_get_realized (priv->tree_view))
1084      gtk_widget_queue_resize (priv->tree_view);
1085
1086 }
1087
1088 /* Button signal handlers
1089  */
1090
1091 static gint
1092 gtk_tree_view_column_button_event (GtkWidget *widget,
1093                                    GdkEvent  *event,
1094                                    gpointer   data)
1095 {
1096   GtkTreeViewColumn        *column = (GtkTreeViewColumn *) data;
1097   GtkTreeViewColumnPrivate *priv   = column->priv;
1098
1099   g_return_val_if_fail (event != NULL, FALSE);
1100
1101   if (event->type == GDK_BUTTON_PRESS &&
1102       priv->reorderable &&
1103       ((GdkEventButton *)event)->button == GDK_BUTTON_PRIMARY)
1104     {
1105       priv->maybe_reordered = TRUE;
1106       gdk_window_get_device_position (gtk_button_get_event_window (GTK_BUTTON (widget)),
1107                                       gdk_event_get_device (event),
1108                                       &priv->drag_x,
1109                                       &priv->drag_y,
1110                                       NULL);
1111       gtk_widget_grab_focus (widget);
1112     }
1113
1114   if (event->type == GDK_BUTTON_RELEASE ||
1115       event->type == GDK_LEAVE_NOTIFY)
1116     priv->maybe_reordered = FALSE;
1117
1118   if (event->type == GDK_MOTION_NOTIFY &&
1119       priv->maybe_reordered &&
1120       (gtk_drag_check_threshold (widget,
1121                                  priv->drag_x,
1122                                  priv->drag_y,
1123                                  (gint) ((GdkEventMotion *)event)->x,
1124                                  (gint) ((GdkEventMotion *)event)->y)))
1125     {
1126       priv->maybe_reordered = FALSE;
1127       _gtk_tree_view_column_start_drag (GTK_TREE_VIEW (priv->tree_view), column,
1128                                         event->motion.device);
1129       return TRUE;
1130     }
1131
1132   if (priv->clickable == FALSE)
1133     {
1134       switch (event->type)
1135         {
1136         case GDK_BUTTON_PRESS:
1137         case GDK_2BUTTON_PRESS:
1138         case GDK_3BUTTON_PRESS:
1139         case GDK_MOTION_NOTIFY:
1140         case GDK_BUTTON_RELEASE:
1141         case GDK_ENTER_NOTIFY:
1142         case GDK_LEAVE_NOTIFY:
1143           return TRUE;
1144         default:
1145           return FALSE;
1146         }
1147     }
1148   return FALSE;
1149 }
1150
1151
1152 static void
1153 gtk_tree_view_column_button_clicked (GtkWidget *widget, gpointer data)
1154 {
1155   g_signal_emit_by_name (data, "clicked");
1156 }
1157
1158 static gboolean
1159 gtk_tree_view_column_mnemonic_activate (GtkWidget *widget,
1160                                         gboolean   group_cycling,
1161                                         gpointer   data)
1162 {
1163   GtkTreeViewColumn        *column = (GtkTreeViewColumn *)data;
1164   GtkTreeViewColumnPrivate *priv   = column->priv;
1165
1166   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), FALSE);
1167
1168   _gtk_tree_view_set_focus_column (GTK_TREE_VIEW (priv->tree_view), column);
1169
1170   if (priv->clickable)
1171     gtk_button_clicked (GTK_BUTTON (priv->button));
1172   else if (gtk_widget_get_can_focus (priv->button))
1173     gtk_widget_grab_focus (priv->button);
1174   else
1175     gtk_widget_grab_focus (priv->tree_view);
1176
1177   return TRUE;
1178 }
1179
1180 static void
1181 gtk_tree_view_model_sort_column_changed (GtkTreeSortable   *sortable,
1182                                          GtkTreeViewColumn *column)
1183 {
1184   GtkTreeViewColumnPrivate *priv = column->priv;
1185   gint sort_column_id;
1186   GtkSortType order;
1187
1188   if (gtk_tree_sortable_get_sort_column_id (sortable,
1189                                             &sort_column_id,
1190                                             &order))
1191     {
1192       if (sort_column_id == priv->sort_column_id)
1193         {
1194           gtk_tree_view_column_set_sort_indicator (column, TRUE);
1195           gtk_tree_view_column_set_sort_order (column, order);
1196         }
1197       else
1198         {
1199           gtk_tree_view_column_set_sort_indicator (column, FALSE);
1200         }
1201     }
1202   else
1203     {
1204       gtk_tree_view_column_set_sort_indicator (column, FALSE);
1205     }
1206 }
1207
1208 static void
1209 gtk_tree_view_column_sort (GtkTreeViewColumn *tree_column,
1210                            gpointer           data)
1211 {
1212   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1213   GtkTreeModel *model;
1214   GtkTreeSortable *sortable;
1215   gint sort_column_id;
1216   GtkSortType order;
1217   gboolean has_sort_column;
1218   gboolean has_default_sort_func;
1219
1220   g_return_if_fail (priv->tree_view != NULL);
1221
1222   model    = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
1223   sortable = GTK_TREE_SORTABLE (model);
1224
1225   has_sort_column =
1226     gtk_tree_sortable_get_sort_column_id (sortable,
1227                                           &sort_column_id,
1228                                           &order);
1229   has_default_sort_func =
1230     gtk_tree_sortable_has_default_sort_func (sortable);
1231
1232   if (has_sort_column &&
1233       sort_column_id == priv->sort_column_id)
1234     {
1235       if (order == GTK_SORT_ASCENDING)
1236         gtk_tree_sortable_set_sort_column_id (sortable,
1237                                               priv->sort_column_id,
1238                                               GTK_SORT_DESCENDING);
1239       else if (order == GTK_SORT_DESCENDING && has_default_sort_func)
1240         gtk_tree_sortable_set_sort_column_id (sortable,
1241                                               GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
1242                                               GTK_SORT_ASCENDING);
1243       else
1244         gtk_tree_sortable_set_sort_column_id (sortable,
1245                                               priv->sort_column_id,
1246                                               GTK_SORT_ASCENDING);
1247     }
1248   else
1249     {
1250       gtk_tree_sortable_set_sort_column_id (sortable,
1251                                             priv->sort_column_id,
1252                                             GTK_SORT_ASCENDING);
1253     }
1254 }
1255
1256 static void
1257 gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn *tree_column)
1258 {
1259   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1260   GtkTreeModel *model;
1261
1262   if (priv->tree_view == NULL)
1263     return;
1264
1265   model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
1266
1267   if (model == NULL)
1268     return;
1269
1270   if (GTK_IS_TREE_SORTABLE (model) &&
1271       priv->sort_column_id != -1)
1272     {
1273       gint real_sort_column_id;
1274       GtkSortType real_order;
1275
1276       if (priv->sort_column_changed_signal == 0)
1277         priv->sort_column_changed_signal =
1278           g_signal_connect (model, "sort-column-changed",
1279                             G_CALLBACK (gtk_tree_view_model_sort_column_changed),
1280                             tree_column);
1281
1282       if (gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
1283                                                 &real_sort_column_id,
1284                                                 &real_order) &&
1285           (real_sort_column_id == priv->sort_column_id))
1286         {
1287           gtk_tree_view_column_set_sort_indicator (tree_column, TRUE);
1288           gtk_tree_view_column_set_sort_order (tree_column, real_order);
1289         }
1290       else
1291         {
1292           gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
1293         }
1294    }
1295 }
1296
1297 static void
1298 gtk_tree_view_column_context_changed  (GtkCellAreaContext      *context,
1299                                        GParamSpec              *pspec,
1300                                        GtkTreeViewColumn       *tree_column)
1301 {
1302   /* Here we want the column re-requested if the underlying context was
1303    * actually reset for any reason, this can happen if the underlying
1304    * area/cell configuration changes (i.e. cell packing properties
1305    * or cell spacing and the like)
1306    *
1307    * Note that we block this handler while requesting for sizes
1308    * so there is no need to check for the new context size being -1,
1309    * we also block the handler when explicitly resetting the context
1310    * so as to avoid some infinite stack recursion.
1311    */
1312   if (!strcmp (pspec->name, "minimum-width") ||
1313       !strcmp (pspec->name, "natural-width") ||
1314       !strcmp (pspec->name, "minimum-height") ||
1315       !strcmp (pspec->name, "natural-height"))
1316     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1317 }
1318
1319 static void
1320 gtk_tree_view_column_add_editable_callback (GtkCellArea       *area,
1321                                             GtkCellRenderer   *renderer,
1322                                             GtkCellEditable   *edit_widget,
1323                                             GdkRectangle      *cell_area,
1324                                             const gchar       *path_string,
1325                                             gpointer           user_data)
1326 {
1327   GtkTreeViewColumn        *column = user_data;
1328   GtkTreeViewColumnPrivate *priv   = column->priv;
1329   GtkTreePath              *path;
1330
1331   if (priv->tree_view)
1332     {
1333       path = gtk_tree_path_new_from_string (path_string);
1334
1335       _gtk_tree_view_add_editable (GTK_TREE_VIEW (priv->tree_view),
1336                                    column,
1337                                    path,
1338                                    edit_widget,
1339                                    cell_area);
1340
1341       gtk_tree_path_free (path);
1342     }
1343 }
1344
1345 static void
1346 gtk_tree_view_column_remove_editable_callback (GtkCellArea     *area,
1347                                                GtkCellRenderer *renderer,
1348                                                GtkCellEditable *edit_widget,
1349                                                gpointer         user_data)
1350 {
1351   GtkTreeViewColumn        *column = user_data;
1352   GtkTreeViewColumnPrivate *priv   = column->priv;
1353
1354   if (priv->tree_view)
1355     _gtk_tree_view_remove_editable (GTK_TREE_VIEW (priv->tree_view),
1356                                     column,
1357                                     edit_widget);
1358 }
1359
1360 /* Exported Private Functions.
1361  * These should only be called by gtktreeview.c or gtktreeviewcolumn.c
1362  */
1363 void
1364 _gtk_tree_view_column_realize_button (GtkTreeViewColumn *column)
1365 {
1366   GtkTreeViewColumnPrivate *priv = column->priv;
1367   GtkAllocation allocation;
1368   GtkTreeView *tree_view;
1369   GdkWindowAttr attr;
1370   guint attributes_mask;
1371   gboolean rtl;
1372
1373   tree_view = (GtkTreeView *)priv->tree_view;
1374   rtl       = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
1375
1376   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
1377   g_return_if_fail (gtk_widget_get_realized (priv->tree_view));
1378   g_return_if_fail (priv->button != NULL);
1379
1380   g_return_if_fail (_gtk_tree_view_get_header_window (tree_view) != NULL);
1381   gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
1382
1383   attr.window_type = GDK_WINDOW_CHILD;
1384   attr.wclass = GDK_INPUT_ONLY;
1385   attr.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
1386   attr.event_mask = gtk_widget_get_events (GTK_WIDGET (tree_view)) |
1387                     (GDK_BUTTON_PRESS_MASK |
1388                      GDK_BUTTON_RELEASE_MASK |
1389                      GDK_POINTER_MOTION_MASK |
1390                      GDK_POINTER_MOTION_HINT_MASK |
1391                      GDK_KEY_PRESS_MASK);
1392   attributes_mask = GDK_WA_CURSOR | GDK_WA_X | GDK_WA_Y;
1393   attr.cursor = gdk_cursor_new_for_display
1394     (gdk_window_get_display (_gtk_tree_view_get_header_window (tree_view)), GDK_SB_H_DOUBLE_ARROW);
1395   attr.y = 0;
1396   attr.width = TREE_VIEW_DRAG_WIDTH;
1397   attr.height = _gtk_tree_view_get_header_height (tree_view);
1398
1399   gtk_widget_get_allocation (priv->button, &allocation);
1400   attr.x       = (allocation.x + (rtl ? 0 : allocation.width)) - TREE_VIEW_DRAG_WIDTH / 2;
1401   priv->window = gdk_window_new (_gtk_tree_view_get_header_window (tree_view),
1402                                  &attr, attributes_mask);
1403   gtk_widget_register_window (GTK_WIDGET (tree_view), priv->window);
1404
1405   gtk_tree_view_column_update_button (column);
1406
1407   g_object_unref (attr.cursor);
1408 }
1409
1410 void
1411 _gtk_tree_view_column_unrealize_button (GtkTreeViewColumn *column)
1412 {
1413   GtkTreeViewColumnPrivate *priv;
1414
1415   g_return_if_fail (column != NULL);
1416
1417   priv = column->priv;
1418   g_return_if_fail (priv->window != NULL);
1419
1420   gtk_widget_unregister_window (GTK_WIDGET (priv->tree_view), priv->window);
1421   gdk_window_destroy (priv->window);
1422   priv->window = NULL;
1423 }
1424
1425 void
1426 _gtk_tree_view_column_unset_model (GtkTreeViewColumn *column,
1427                                    GtkTreeModel      *old_model)
1428 {
1429   GtkTreeViewColumnPrivate *priv = column->priv;
1430
1431   if (priv->sort_column_changed_signal)
1432     {
1433       g_signal_handler_disconnect (old_model,
1434                                    priv->sort_column_changed_signal);
1435       priv->sort_column_changed_signal = 0;
1436     }
1437   gtk_tree_view_column_set_sort_indicator (column, FALSE);
1438 }
1439
1440 void
1441 _gtk_tree_view_column_set_tree_view (GtkTreeViewColumn *column,
1442                                      GtkTreeView       *tree_view)
1443 {
1444   GtkTreeViewColumnPrivate *priv = column->priv;
1445
1446   g_assert (priv->tree_view == NULL);
1447
1448   priv->tree_view = GTK_WIDGET (tree_view);
1449   gtk_tree_view_column_create_button (column);
1450
1451   priv->property_changed_signal =
1452     g_signal_connect_swapped (tree_view,
1453                               "notify::model",
1454                               G_CALLBACK (gtk_tree_view_column_setup_sort_column_id_callback),
1455                               column);
1456
1457   gtk_tree_view_column_setup_sort_column_id_callback (column);
1458 }
1459
1460 void
1461 _gtk_tree_view_column_unset_tree_view (GtkTreeViewColumn *column)
1462 {
1463   GtkTreeViewColumnPrivate *priv = column->priv;
1464
1465   if (priv->tree_view && priv->button)
1466     {
1467       gtk_container_remove (GTK_CONTAINER (priv->tree_view), priv->button);
1468     }
1469   if (priv->property_changed_signal)
1470     {
1471       g_signal_handler_disconnect (priv->tree_view, priv->property_changed_signal);
1472       priv->property_changed_signal = 0;
1473     }
1474
1475   if (priv->sort_column_changed_signal)
1476     {
1477       g_signal_handler_disconnect (gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view)),
1478                                    priv->sort_column_changed_signal);
1479       priv->sort_column_changed_signal = 0;
1480     }
1481
1482   priv->tree_view = NULL;
1483   priv->button = NULL;
1484 }
1485
1486 gboolean
1487 _gtk_tree_view_column_has_editable_cell (GtkTreeViewColumn *column)
1488 {
1489   GtkTreeViewColumnPrivate *priv = column->priv;
1490   gboolean ret = FALSE;
1491   GList *list, *cells;
1492
1493   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
1494
1495   for (list = cells; list; list = list->next)
1496     {
1497       GtkCellRenderer *cell = list->data;
1498       GtkCellRendererMode mode;
1499
1500       g_object_get (cell, "mode", &mode, NULL);
1501
1502       if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
1503         {
1504           ret = TRUE;
1505           break;
1506         }
1507     }
1508
1509   g_list_free (cells);
1510
1511   return ret;
1512 }
1513
1514 /* gets cell being edited */
1515 GtkCellRenderer *
1516 _gtk_tree_view_column_get_edited_cell (GtkTreeViewColumn *column)
1517 {
1518   GtkTreeViewColumnPrivate *priv = column->priv;
1519
1520   return gtk_cell_area_get_edited_cell (priv->cell_area);
1521 }
1522
1523 GtkCellRenderer *
1524 _gtk_tree_view_column_get_cell_at_pos (GtkTreeViewColumn *column,
1525                                        GdkRectangle      *cell_area,
1526                                        GdkRectangle      *background_area,
1527                                        gint               x,
1528                                        gint               y)
1529 {
1530   GtkCellRenderer *match = NULL;
1531   GtkTreeViewColumnPrivate *priv = column->priv;
1532
1533   /* If (x, y) is outside of the background area, immediately return */
1534   if (x < background_area->x ||
1535       x > background_area->x + background_area->width ||
1536       y < background_area->y ||
1537       y > background_area->y + background_area->height)
1538     return NULL;
1539
1540   /* If (x, y) is inside the background area, clamp it to the cell_area
1541    * so that a cell is still returned.  The main reason for doing this
1542    * (on the x axis) is for handling clicks in the indentation area
1543    * (either at the left or right depending on RTL setting).  Another
1544    * reason is for handling clicks on the area where the focus rectangle
1545    * is drawn (this is outside of cell area), this manifests itself
1546    * mainly when a large setting is used for focus-line-width.
1547    */
1548   if (x < cell_area->x)
1549     x = cell_area->x;
1550   else if (x > cell_area->x + cell_area->width)
1551     x = cell_area->x + cell_area->width;
1552
1553   if (y < cell_area->y)
1554     y = cell_area->y;
1555   else if (y > cell_area->y + cell_area->height)
1556     y = cell_area->y + cell_area->height;
1557
1558   match = gtk_cell_area_get_cell_at_position (priv->cell_area,
1559                                               priv->cell_area_context,
1560                                               priv->tree_view,
1561                                               cell_area,
1562                                               x, y,
1563                                               NULL);
1564
1565   return match;
1566 }
1567
1568 gboolean
1569 _gtk_tree_view_column_is_blank_at_pos (GtkTreeViewColumn *column,
1570                                        GdkRectangle      *cell_area,
1571                                        GdkRectangle      *background_area,
1572                                        gint               x,
1573                                        gint               y)
1574 {
1575   GtkCellRenderer *match;
1576   GdkRectangle cell_alloc, aligned_area, inner_area;
1577   GtkTreeViewColumnPrivate *priv = column->priv;
1578
1579   match = _gtk_tree_view_column_get_cell_at_pos (column,
1580                                                  cell_area,
1581                                                  background_area,
1582                                                  x, y);
1583   if (!match)
1584     return FALSE;
1585
1586   gtk_cell_area_get_cell_allocation (priv->cell_area,
1587                                      priv->cell_area_context,
1588                                      priv->tree_view,
1589                                      match,
1590                                      cell_area,
1591                                      &cell_alloc);
1592
1593   gtk_cell_area_inner_cell_area (priv->cell_area, priv->tree_view,
1594                                  &cell_alloc, &inner_area);
1595   gtk_cell_renderer_get_aligned_area (match, priv->tree_view, 0,
1596                                       &inner_area, &aligned_area);
1597
1598   if (x < aligned_area.x ||
1599       x > aligned_area.x + aligned_area.width ||
1600       y < aligned_area.y ||
1601       y > aligned_area.y + aligned_area.height)
1602     return TRUE;
1603
1604   return FALSE;
1605 }
1606
1607 /* Public Functions */
1608
1609
1610 /**
1611  * gtk_tree_view_column_new:
1612  *
1613  * Creates a new #GtkTreeViewColumn.
1614  *
1615  * Return value: A newly created #GtkTreeViewColumn.
1616  **/
1617 GtkTreeViewColumn *
1618 gtk_tree_view_column_new (void)
1619 {
1620   GtkTreeViewColumn *tree_column;
1621
1622   tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, NULL);
1623
1624   return tree_column;
1625 }
1626
1627 /**
1628  * gtk_tree_view_column_new_with_area:
1629  * @area: the #GtkCellArea that the newly created column should use to layout cells.
1630  *
1631  * Creates a new #GtkTreeViewColumn using @area to render its cells.
1632  *
1633  * Return value: A newly created #GtkTreeViewColumn.
1634  *
1635  * Since: 3.0
1636  */
1637 GtkTreeViewColumn *
1638 gtk_tree_view_column_new_with_area (GtkCellArea *area)
1639 {
1640   GtkTreeViewColumn *tree_column;
1641
1642   tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, "cell-area", area, NULL);
1643
1644   return tree_column;
1645 }
1646
1647
1648 /**
1649  * gtk_tree_view_column_new_with_attributes:
1650  * @title: The title to set the header to
1651  * @cell: The #GtkCellRenderer
1652  * @...: A %NULL-terminated list of attributes
1653  *
1654  * Creates a new #GtkTreeViewColumn with a number of default values.
1655  * This is equivalent to calling gtk_tree_view_column_set_title(),
1656  * gtk_tree_view_column_pack_start(), and
1657  * gtk_tree_view_column_set_attributes() on the newly created #GtkTreeViewColumn.
1658  *
1659  * Here's a simple example:
1660  * |[
1661  *  enum { TEXT_COLUMN, COLOR_COLUMN, N_COLUMNS };
1662  *  ...
1663  *  {
1664  *    GtkTreeViewColumn *column;
1665  *    GtkCellRenderer   *renderer = gtk_cell_renderer_text_new ();
1666  *
1667  *    column = gtk_tree_view_column_new_with_attributes ("Title",
1668  *                                                       renderer,
1669  *                                                       "text", TEXT_COLUMN,
1670  *                                                       "foreground", COLOR_COLUMN,
1671  *                                                       NULL);
1672  *  }
1673  * ]|
1674  *
1675  * Return value: A newly created #GtkTreeViewColumn.
1676  **/
1677 GtkTreeViewColumn *
1678 gtk_tree_view_column_new_with_attributes (const gchar     *title,
1679                                           GtkCellRenderer *cell,
1680                                           ...)
1681 {
1682   GtkTreeViewColumn *retval;
1683   va_list args;
1684
1685   retval = gtk_tree_view_column_new ();
1686
1687   gtk_tree_view_column_set_title (retval, title);
1688   gtk_tree_view_column_pack_start (retval, cell, TRUE);
1689
1690   va_start (args, cell);
1691   gtk_tree_view_column_set_attributesv (retval, cell, args);
1692   va_end (args);
1693
1694   return retval;
1695 }
1696
1697 /**
1698  * gtk_tree_view_column_pack_start:
1699  * @tree_column: A #GtkTreeViewColumn.
1700  * @cell: The #GtkCellRenderer.
1701  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1702  *
1703  * Packs the @cell into the beginning of the column. If @expand is %FALSE, then
1704  * the @cell is allocated no more space than it needs. Any unused space is divided
1705  * evenly between cells for which @expand is %TRUE.
1706  **/
1707 void
1708 gtk_tree_view_column_pack_start (GtkTreeViewColumn *tree_column,
1709                                  GtkCellRenderer   *cell,
1710                                  gboolean           expand)
1711 {
1712   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (tree_column), cell, expand);
1713 }
1714
1715 /**
1716  * gtk_tree_view_column_pack_end:
1717  * @tree_column: A #GtkTreeViewColumn.
1718  * @cell: The #GtkCellRenderer.
1719  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1720  *
1721  * Adds the @cell to end of the column. If @expand is %FALSE, then the @cell
1722  * is allocated no more space than it needs. Any unused space is divided
1723  * evenly between cells for which @expand is %TRUE.
1724  **/
1725 void
1726 gtk_tree_view_column_pack_end (GtkTreeViewColumn  *tree_column,
1727                                GtkCellRenderer    *cell,
1728                                gboolean            expand)
1729 {
1730   gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (tree_column), cell, expand);
1731 }
1732
1733 /**
1734  * gtk_tree_view_column_clear:
1735  * @tree_column: A #GtkTreeViewColumn
1736  *
1737  * Unsets all the mappings on all renderers on the @tree_column.
1738  **/
1739 void
1740 gtk_tree_view_column_clear (GtkTreeViewColumn *tree_column)
1741 {
1742   gtk_cell_layout_clear (GTK_CELL_LAYOUT (tree_column));
1743 }
1744
1745 /**
1746  * gtk_tree_view_column_add_attribute:
1747  * @tree_column: A #GtkTreeViewColumn.
1748  * @cell_renderer: the #GtkCellRenderer to set attributes on
1749  * @attribute: An attribute on the renderer
1750  * @column: The column position on the model to get the attribute from.
1751  *
1752  * Adds an attribute mapping to the list in @tree_column.  The @column is the
1753  * column of the model to get a value from, and the @attribute is the
1754  * parameter on @cell_renderer to be set from the value. So for example
1755  * if column 2 of the model contains strings, you could have the
1756  * "text" attribute of a #GtkCellRendererText get its values from
1757  * column 2.
1758  **/
1759 void
1760 gtk_tree_view_column_add_attribute (GtkTreeViewColumn *tree_column,
1761                                     GtkCellRenderer   *cell_renderer,
1762                                     const gchar       *attribute,
1763                                     gint               column)
1764 {
1765   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (tree_column),
1766                                  cell_renderer, attribute, column);
1767 }
1768
1769 static void
1770 gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
1771                                       GtkCellRenderer   *cell_renderer,
1772                                       va_list            args)
1773 {
1774   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1775   gchar *attribute;
1776   gint column;
1777
1778   attribute = va_arg (args, gchar *);
1779
1780   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (priv->cell_area),
1781                                     cell_renderer);
1782
1783   while (attribute != NULL)
1784     {
1785       column = va_arg (args, gint);
1786       gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (priv->cell_area),
1787                                      cell_renderer, attribute, column);
1788       attribute = va_arg (args, gchar *);
1789     }
1790 }
1791
1792 /**
1793  * gtk_tree_view_column_set_attributes:
1794  * @tree_column: A #GtkTreeViewColumn
1795  * @cell_renderer: the #GtkCellRenderer we're setting the attributes of
1796  * @...: A %NULL-terminated list of attributes
1797  *
1798  * Sets the attributes in the list as the attributes of @tree_column.
1799  * The attributes should be in attribute/column order, as in
1800  * gtk_tree_view_column_add_attribute(). All existing attributes
1801  * are removed, and replaced with the new attributes.
1802  */
1803 void
1804 gtk_tree_view_column_set_attributes (GtkTreeViewColumn *tree_column,
1805                                      GtkCellRenderer   *cell_renderer,
1806                                      ...)
1807 {
1808   va_list args;
1809
1810   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1811   g_return_if_fail (GTK_IS_CELL_RENDERER (cell_renderer));
1812
1813   va_start (args, cell_renderer);
1814   gtk_tree_view_column_set_attributesv (tree_column, cell_renderer, args);
1815   va_end (args);
1816 }
1817
1818
1819 /**
1820  * gtk_tree_view_column_set_cell_data_func:
1821  * @tree_column: A #GtkTreeViewColumn
1822  * @cell_renderer: A #GtkCellRenderer
1823  * @func: (allow-none): The #GtkTreeCellDataFunc to use.
1824  * @func_data: The user data for @func.
1825  * @destroy: The destroy notification for @func_data
1826  *
1827  * Sets the #GtkTreeCellDataFunc to use for the column.  This
1828  * function is used instead of the standard attributes mapping for
1829  * setting the column value, and should set the value of @tree_column's
1830  * cell renderer as appropriate.  @func may be %NULL to remove an
1831  * older one.
1832  **/
1833 void
1834 gtk_tree_view_column_set_cell_data_func (GtkTreeViewColumn   *tree_column,
1835                                          GtkCellRenderer     *cell_renderer,
1836                                          GtkTreeCellDataFunc  func,
1837                                          gpointer             func_data,
1838                                          GDestroyNotify       destroy)
1839 {
1840   gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (tree_column),
1841                                       cell_renderer,
1842                                       (GtkCellLayoutDataFunc)func,
1843                                       func_data, destroy);
1844 }
1845
1846
1847 /**
1848  * gtk_tree_view_column_clear_attributes:
1849  * @tree_column: a #GtkTreeViewColumn
1850  * @cell_renderer: a #GtkCellRenderer to clear the attribute mapping on.
1851  *
1852  * Clears all existing attributes previously set with
1853  * gtk_tree_view_column_set_attributes().
1854  **/
1855 void
1856 gtk_tree_view_column_clear_attributes (GtkTreeViewColumn *tree_column,
1857                                        GtkCellRenderer   *cell_renderer)
1858 {
1859   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (tree_column),
1860                                     cell_renderer);
1861 }
1862
1863 /**
1864  * gtk_tree_view_column_set_spacing:
1865  * @tree_column: A #GtkTreeViewColumn.
1866  * @spacing: distance between cell renderers in pixels.
1867  *
1868  * Sets the spacing field of @tree_column, which is the number of pixels to
1869  * place between cell renderers packed into it.
1870  **/
1871 void
1872 gtk_tree_view_column_set_spacing (GtkTreeViewColumn *tree_column,
1873                                   gint               spacing)
1874 {
1875   GtkTreeViewColumnPrivate *priv;
1876
1877   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1878   g_return_if_fail (spacing >= 0);
1879
1880   priv = tree_column->priv;
1881
1882   gtk_cell_area_box_set_spacing (GTK_CELL_AREA_BOX (priv->cell_area),
1883                                  spacing);
1884   if (priv->tree_view)
1885     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1886 }
1887
1888 /**
1889  * gtk_tree_view_column_get_spacing:
1890  * @tree_column: A #GtkTreeViewColumn.
1891  *
1892  * Returns the spacing of @tree_column.
1893  *
1894  * Return value: the spacing of @tree_column.
1895  **/
1896 gint
1897 gtk_tree_view_column_get_spacing (GtkTreeViewColumn *tree_column)
1898 {
1899   GtkTreeViewColumnPrivate *priv;
1900
1901   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1902
1903   priv = tree_column->priv;
1904
1905   return gtk_cell_area_box_get_spacing (GTK_CELL_AREA_BOX (priv->cell_area));
1906 }
1907
1908 /* Options for manipulating the columns */
1909
1910 /**
1911  * gtk_tree_view_column_set_visible:
1912  * @tree_column: A #GtkTreeViewColumn.
1913  * @visible: %TRUE if the @tree_column is visible.
1914  *
1915  * Sets the visibility of @tree_column.
1916  */
1917 void
1918 gtk_tree_view_column_set_visible (GtkTreeViewColumn *tree_column,
1919                                   gboolean           visible)
1920 {
1921   GtkTreeViewColumnPrivate *priv;
1922
1923   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1924
1925   priv    = tree_column->priv;
1926   visible = !! visible;
1927
1928   if (priv->visible == visible)
1929     return;
1930
1931   priv->visible = visible;
1932
1933   if (priv->visible)
1934     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1935
1936   if (priv->tree_view)
1937     {
1938       _gtk_tree_view_reset_header_styles (GTK_TREE_VIEW (priv->tree_view));
1939       _gtk_tree_view_accessible_toggle_visibility (GTK_TREE_VIEW (priv->tree_view),
1940                                                    tree_column);
1941     }
1942
1943   gtk_tree_view_column_update_button (tree_column);
1944   g_object_notify (G_OBJECT (tree_column), "visible");
1945 }
1946
1947 /**
1948  * gtk_tree_view_column_get_visible:
1949  * @tree_column: A #GtkTreeViewColumn.
1950  *
1951  * Returns %TRUE if @tree_column is visible.
1952  *
1953  * Return value: whether the column is visible or not.  If it is visible, then
1954  * the tree will show the column.
1955  **/
1956 gboolean
1957 gtk_tree_view_column_get_visible (GtkTreeViewColumn *tree_column)
1958 {
1959   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
1960
1961   return tree_column->priv->visible;
1962 }
1963
1964 /**
1965  * gtk_tree_view_column_set_resizable:
1966  * @tree_column: A #GtkTreeViewColumn
1967  * @resizable: %TRUE, if the column can be resized
1968  *
1969  * If @resizable is %TRUE, then the user can explicitly resize the column by
1970  * grabbing the outer edge of the column button.  If resizable is %TRUE and
1971  * sizing mode of the column is #GTK_TREE_VIEW_COLUMN_AUTOSIZE, then the sizing
1972  * mode is changed to #GTK_TREE_VIEW_COLUMN_GROW_ONLY.
1973  **/
1974 void
1975 gtk_tree_view_column_set_resizable (GtkTreeViewColumn *tree_column,
1976                                     gboolean           resizable)
1977 {
1978   GtkTreeViewColumnPrivate *priv;
1979
1980   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1981
1982   priv      = tree_column->priv;
1983   resizable = !! resizable;
1984
1985   if (priv->resizable == resizable)
1986     return;
1987
1988   priv->resizable = resizable;
1989
1990   if (resizable && priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1991     gtk_tree_view_column_set_sizing (tree_column, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
1992
1993   gtk_tree_view_column_update_button (tree_column);
1994
1995   g_object_notify (G_OBJECT (tree_column), "resizable");
1996 }
1997
1998 /**
1999  * gtk_tree_view_column_get_resizable:
2000  * @tree_column: A #GtkTreeViewColumn
2001  *
2002  * Returns %TRUE if the @tree_column can be resized by the end user.
2003  *
2004  * Return value: %TRUE, if the @tree_column can be resized.
2005  **/
2006 gboolean
2007 gtk_tree_view_column_get_resizable (GtkTreeViewColumn *tree_column)
2008 {
2009   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2010
2011   return tree_column->priv->resizable;
2012 }
2013
2014
2015 /**
2016  * gtk_tree_view_column_set_sizing:
2017  * @tree_column: A #GtkTreeViewColumn.
2018  * @type: The #GtkTreeViewColumnSizing.
2019  *
2020  * Sets the growth behavior of @tree_column to @type.
2021  **/
2022 void
2023 gtk_tree_view_column_set_sizing (GtkTreeViewColumn       *tree_column,
2024                                  GtkTreeViewColumnSizing  type)
2025 {
2026   GtkTreeViewColumnPrivate *priv;
2027
2028   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2029
2030   priv      = tree_column->priv;
2031
2032   if (type == priv->column_type)
2033     return;
2034
2035   if (type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2036     gtk_tree_view_column_set_resizable (tree_column, FALSE);
2037
2038   priv->column_type = type;
2039
2040   gtk_tree_view_column_update_button (tree_column);
2041
2042   g_object_notify (G_OBJECT (tree_column), "sizing");
2043 }
2044
2045 /**
2046  * gtk_tree_view_column_get_sizing:
2047  * @tree_column: A #GtkTreeViewColumn.
2048  *
2049  * Returns the current type of @tree_column.
2050  *
2051  * Return value: The type of @tree_column.
2052  **/
2053 GtkTreeViewColumnSizing
2054 gtk_tree_view_column_get_sizing (GtkTreeViewColumn *tree_column)
2055 {
2056   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2057
2058   return tree_column->priv->column_type;
2059 }
2060
2061 /**
2062  * gtk_tree_view_column_get_width:
2063  * @tree_column: A #GtkTreeViewColumn.
2064  *
2065  * Returns the current size of @tree_column in pixels.
2066  *
2067  * Return value: The current width of @tree_column.
2068  **/
2069 gint
2070 gtk_tree_view_column_get_width (GtkTreeViewColumn *tree_column)
2071 {
2072   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2073
2074   return tree_column->priv->width;
2075 }
2076
2077 /**
2078  * gtk_tree_view_column_get_x_offset:
2079  * @tree_column: A #GtkTreeViewColumn.
2080  *
2081  * Returns the current X offset of @tree_column in pixels.
2082  *
2083  * Return value: The current X offset of @tree_column.
2084  *
2085  * Since: 3.2
2086  */
2087 gint
2088 gtk_tree_view_column_get_x_offset (GtkTreeViewColumn *tree_column)
2089 {
2090   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2091
2092   return tree_column->priv->x_offset;
2093 }
2094
2095 void
2096 _gtk_tree_view_column_request_width (GtkTreeViewColumn *tree_column,
2097                                      gint              *minimum,
2098                                      gint              *natural)
2099 {
2100   GtkTreeViewColumnPrivate *priv = tree_column->priv;
2101   gint minimum_width = 1, natural_width = 1;
2102   gint button_minimum, button_natural;
2103
2104   if (priv->column_type != GTK_TREE_VIEW_COLUMN_FIXED)
2105     {
2106       gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &minimum_width, &natural_width);
2107       minimum_width += priv->padding;
2108       natural_width += priv->padding;
2109
2110       if (gtk_tree_view_get_headers_visible (GTK_TREE_VIEW (priv->tree_view)))
2111         {
2112           gtk_widget_get_preferred_width (priv->button, &button_minimum, &button_natural);
2113           minimum_width = MAX (minimum_width, button_minimum);
2114           natural_width = MAX (natural_width, button_natural);
2115         }
2116     }
2117
2118   if (priv->fixed_width != -1)
2119     natural_width = MAX (priv->fixed_width, minimum_width);
2120
2121   if (priv->min_width != -1)
2122     {
2123       minimum_width = MAX (minimum_width, priv->min_width);
2124       natural_width = MAX (natural_width, priv->min_width);
2125     }
2126
2127   if (priv->max_width != -1)
2128     {
2129       minimum_width = MIN (minimum_width, priv->max_width);
2130       natural_width = MIN (natural_width, priv->max_width);
2131     }
2132
2133   if (minimum != NULL)
2134     *minimum = minimum_width;
2135   if (natural != NULL)
2136     *natural = natural_width;
2137 }
2138
2139 void
2140 _gtk_tree_view_column_allocate (GtkTreeViewColumn *tree_column,
2141                                 int                x_offset,
2142                                 int                width)
2143 {
2144   GtkTreeViewColumnPrivate *priv;
2145   gboolean                  rtl;
2146   GtkAllocation             allocation = { 0, 0, 0, 0 };
2147
2148   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2149
2150   priv = tree_column->priv;
2151
2152   if (priv->width != width)
2153     gtk_widget_queue_draw (priv->tree_view);
2154
2155   priv->x_offset = x_offset;
2156   priv->width = width;
2157
2158   gtk_cell_area_context_allocate (priv->cell_area_context, priv->width - priv->padding, -1);
2159
2160   if (gtk_tree_view_get_headers_visible (GTK_TREE_VIEW (priv->tree_view)))
2161     {
2162       allocation.x      = x_offset;
2163       allocation.y      = 0;
2164       allocation.width  = width;
2165       allocation.height = _gtk_tree_view_get_header_height (GTK_TREE_VIEW (priv->tree_view));
2166
2167       gtk_widget_size_allocate (priv->button, &allocation);
2168     }
2169
2170   if (priv->window)
2171     {
2172       rtl = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
2173       gdk_window_move_resize (priv->window,
2174                               allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2175                               allocation.y,
2176                               TREE_VIEW_DRAG_WIDTH, allocation.height);
2177     }
2178
2179   g_object_notify (G_OBJECT (tree_column), "x-offset");
2180   g_object_notify (G_OBJECT (tree_column), "width");
2181 }
2182
2183 /**
2184  * gtk_tree_view_column_set_fixed_width:
2185  * @tree_column: A #GtkTreeViewColumn.
2186  * @fixed_width: The new fixed width, in pixels, or -1.
2187  *
2188  * If @fixed_width is not -1, sets the fixed width of @tree_column; otherwise
2189  * unsets it.  The effective value of @fixed_width is clamped between the
2190  * minumum and maximum width of the column; however, the value stored in the
2191  * "fixed-width" property is not clamped.  If the column sizing is
2192  * #GTK_TREE_VIEW_COLUMN_GROW_ONLY or #GTK_TREE_VIEW_COLUMN_AUTOSIZE, setting a
2193  * fixed width overrides the automatically calculated width.  Note that
2194  * @fixed_width is only a hint to GTK+; the width actually allocated to the
2195  * column may be greater or less than requested.
2196  *
2197  * Along with "expand", the "fixed-width" property changes when the column is
2198  * resized by the user.
2199  **/
2200 void
2201 gtk_tree_view_column_set_fixed_width (GtkTreeViewColumn *tree_column,
2202                                       gint               fixed_width)
2203 {
2204   GtkTreeViewColumnPrivate *priv;
2205
2206   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2207   g_return_if_fail (fixed_width >= -1);
2208
2209   priv = tree_column->priv;
2210
2211   priv->fixed_width = fixed_width;
2212
2213   if (priv->visible &&
2214       priv->tree_view != NULL &&
2215       gtk_widget_get_realized (priv->tree_view))
2216     {
2217       gtk_widget_queue_resize (priv->tree_view);
2218     }
2219
2220   g_object_notify (G_OBJECT (tree_column), "fixed-width");
2221 }
2222
2223 /**
2224  * gtk_tree_view_column_get_fixed_width:
2225  * @tree_column: A #GtkTreeViewColumn.
2226  *
2227  * Gets the fixed width of the column.  This may not be the actual displayed
2228  * width of the column; for that, use gtk_tree_view_column_get_width().
2229  *
2230  * Return value: The fixed width of the column.
2231  **/
2232 gint
2233 gtk_tree_view_column_get_fixed_width (GtkTreeViewColumn *tree_column)
2234 {
2235   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2236
2237   return tree_column->priv->fixed_width;
2238 }
2239
2240 /**
2241  * gtk_tree_view_column_set_min_width:
2242  * @tree_column: A #GtkTreeViewColumn.
2243  * @min_width: The minimum width of the column in pixels, or -1.
2244  *
2245  * Sets the minimum width of the @tree_column.  If @min_width is -1, then the
2246  * minimum width is unset.
2247  **/
2248 void
2249 gtk_tree_view_column_set_min_width (GtkTreeViewColumn *tree_column,
2250                                     gint               min_width)
2251 {
2252   GtkTreeViewColumnPrivate *priv;
2253
2254   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2255   g_return_if_fail (min_width >= -1);
2256
2257   priv = tree_column->priv;
2258
2259   if (min_width == priv->min_width)
2260     return;
2261
2262   if (priv->visible &&
2263       priv->tree_view != NULL &&
2264       gtk_widget_get_realized (priv->tree_view))
2265     {
2266       if (min_width > priv->width)
2267         gtk_widget_queue_resize (priv->tree_view);
2268     }
2269
2270   priv->min_width = min_width;
2271   g_object_freeze_notify (G_OBJECT (tree_column));
2272   if (priv->max_width != -1 && priv->max_width < min_width)
2273     {
2274       priv->max_width = min_width;
2275       g_object_notify (G_OBJECT (tree_column), "max-width");
2276     }
2277   g_object_notify (G_OBJECT (tree_column), "min-width");
2278   g_object_thaw_notify (G_OBJECT (tree_column));
2279
2280   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2281     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
2282                                     tree_column);
2283 }
2284
2285 /**
2286  * gtk_tree_view_column_get_min_width:
2287  * @tree_column: A #GtkTreeViewColumn.
2288  *
2289  * Returns the minimum width in pixels of the @tree_column, or -1 if no minimum
2290  * width is set.
2291  *
2292  * Return value: The minimum width of the @tree_column.
2293  **/
2294 gint
2295 gtk_tree_view_column_get_min_width (GtkTreeViewColumn *tree_column)
2296 {
2297   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
2298
2299   return tree_column->priv->min_width;
2300 }
2301
2302 /**
2303  * gtk_tree_view_column_set_max_width:
2304  * @tree_column: A #GtkTreeViewColumn.
2305  * @max_width: The maximum width of the column in pixels, or -1.
2306  *
2307  * Sets the maximum width of the @tree_column.  If @max_width is -1, then the
2308  * maximum width is unset.  Note, the column can actually be wider than max
2309  * width if it's the last column in a view.  In this case, the column expands to
2310  * fill any extra space.
2311  **/
2312 void
2313 gtk_tree_view_column_set_max_width (GtkTreeViewColumn *tree_column,
2314                                     gint               max_width)
2315 {
2316   GtkTreeViewColumnPrivate *priv;
2317
2318   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2319   g_return_if_fail (max_width >= -1);
2320
2321   priv = tree_column->priv;
2322
2323   if (max_width == priv->max_width)
2324     return;
2325
2326   if (priv->visible &&
2327       priv->tree_view != NULL &&
2328       gtk_widget_get_realized (priv->tree_view))
2329     {
2330       if (max_width != -1 && max_width < priv->width)
2331         gtk_widget_queue_resize (priv->tree_view);
2332     }
2333
2334   priv->max_width = max_width;
2335   g_object_freeze_notify (G_OBJECT (tree_column));
2336   if (max_width != -1 && max_width < priv->min_width)
2337     {
2338       priv->min_width = max_width;
2339       g_object_notify (G_OBJECT (tree_column), "min-width");
2340     }
2341   g_object_notify (G_OBJECT (tree_column), "max-width");
2342   g_object_thaw_notify (G_OBJECT (tree_column));
2343
2344   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2345     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
2346                                     tree_column);
2347 }
2348
2349 /**
2350  * gtk_tree_view_column_get_max_width:
2351  * @tree_column: A #GtkTreeViewColumn.
2352  *
2353  * Returns the maximum width in pixels of the @tree_column, or -1 if no maximum
2354  * width is set.
2355  *
2356  * Return value: The maximum width of the @tree_column.
2357  **/
2358 gint
2359 gtk_tree_view_column_get_max_width (GtkTreeViewColumn *tree_column)
2360 {
2361   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
2362
2363   return tree_column->priv->max_width;
2364 }
2365
2366 /**
2367  * gtk_tree_view_column_clicked:
2368  * @tree_column: a #GtkTreeViewColumn
2369  *
2370  * Emits the "clicked" signal on the column.  This function will only work if
2371  * @tree_column is clickable.
2372  **/
2373 void
2374 gtk_tree_view_column_clicked (GtkTreeViewColumn *tree_column)
2375 {
2376   GtkTreeViewColumnPrivate *priv;
2377
2378   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2379
2380   priv = tree_column->priv;
2381
2382   if (priv->visible &&
2383       priv->button &&
2384       priv->clickable)
2385     gtk_button_clicked (GTK_BUTTON (priv->button));
2386 }
2387
2388 /**
2389  * gtk_tree_view_column_set_title:
2390  * @tree_column: A #GtkTreeViewColumn.
2391  * @title: The title of the @tree_column.
2392  *
2393  * Sets the title of the @tree_column.  If a custom widget has been set, then
2394  * this value is ignored.
2395  **/
2396 void
2397 gtk_tree_view_column_set_title (GtkTreeViewColumn *tree_column,
2398                                 const gchar       *title)
2399 {
2400   GtkTreeViewColumnPrivate *priv;
2401   gchar                    *new_title;
2402
2403   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2404
2405   priv = tree_column->priv;
2406
2407   new_title = g_strdup (title);
2408   g_free (priv->title);
2409   priv->title = new_title;
2410
2411   gtk_tree_view_column_update_button (tree_column);
2412   g_object_notify (G_OBJECT (tree_column), "title");
2413 }
2414
2415 /**
2416  * gtk_tree_view_column_get_title:
2417  * @tree_column: A #GtkTreeViewColumn.
2418  *
2419  * Returns the title of the widget.
2420  *
2421  * Return value: the title of the column. This string should not be
2422  * modified or freed.
2423  **/
2424 const gchar *
2425 gtk_tree_view_column_get_title (GtkTreeViewColumn *tree_column)
2426 {
2427   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2428
2429   return tree_column->priv->title;
2430 }
2431
2432 /**
2433  * gtk_tree_view_column_set_expand:
2434  * @tree_column: A #GtkTreeViewColumn.
2435  * @expand: %TRUE if the column should expand to fill available space.
2436  *
2437  * Sets the column to take available extra space.  This space is shared equally
2438  * amongst all columns that have the expand set to %TRUE.  If no column has this
2439  * option set, then the last column gets all extra space.  By default, every
2440  * column is created with this %FALSE.
2441  *
2442  * Along with "fixed-width", the "expand" property changes when the column is
2443  * resized by the user.
2444  *
2445  * Since: 2.4
2446  **/
2447 void
2448 gtk_tree_view_column_set_expand (GtkTreeViewColumn *tree_column,
2449                                  gboolean           expand)
2450 {
2451   GtkTreeViewColumnPrivate *priv;
2452
2453   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2454
2455   priv = tree_column->priv;
2456
2457   expand = expand?TRUE:FALSE;
2458   if (priv->expand == expand)
2459     return;
2460   priv->expand = expand;
2461
2462   if (priv->visible &&
2463       priv->tree_view != NULL &&
2464       gtk_widget_get_realized (priv->tree_view))
2465     {
2466       gtk_widget_queue_resize (priv->tree_view);
2467     }
2468
2469   g_object_notify (G_OBJECT (tree_column), "expand");
2470 }
2471
2472 /**
2473  * gtk_tree_view_column_get_expand:
2474  * @tree_column: A #GtkTreeViewColumn.
2475  *
2476  * Returns %TRUE if the column expands to fill available space.
2477  *
2478  * Return value: %TRUE if the column expands to fill available space.
2479  *
2480  * Since: 2.4
2481  **/
2482 gboolean
2483 gtk_tree_view_column_get_expand (GtkTreeViewColumn *tree_column)
2484 {
2485   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2486
2487   return tree_column->priv->expand;
2488 }
2489
2490 /**
2491  * gtk_tree_view_column_set_clickable:
2492  * @tree_column: A #GtkTreeViewColumn.
2493  * @clickable: %TRUE if the header is active.
2494  *
2495  * Sets the header to be active if @clickable is %TRUE.  When the header is
2496  * active, then it can take keyboard focus, and can be clicked.
2497  **/
2498 void
2499 gtk_tree_view_column_set_clickable (GtkTreeViewColumn *tree_column,
2500                                     gboolean           clickable)
2501 {
2502   GtkTreeViewColumnPrivate *priv;
2503
2504   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2505
2506   priv = tree_column->priv;
2507
2508   clickable = !! clickable;
2509   if (priv->clickable == clickable)
2510     return;
2511
2512   priv->clickable = clickable;
2513   gtk_tree_view_column_update_button (tree_column);
2514   g_object_notify (G_OBJECT (tree_column), "clickable");
2515 }
2516
2517 /**
2518  * gtk_tree_view_column_get_clickable:
2519  * @tree_column: a #GtkTreeViewColumn
2520  *
2521  * Returns %TRUE if the user can click on the header for the column.
2522  *
2523  * Return value: %TRUE if user can click the column header.
2524  **/
2525 gboolean
2526 gtk_tree_view_column_get_clickable (GtkTreeViewColumn *tree_column)
2527 {
2528   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2529
2530   return tree_column->priv->clickable;
2531 }
2532
2533 /**
2534  * gtk_tree_view_column_set_widget:
2535  * @tree_column: A #GtkTreeViewColumn.
2536  * @widget: (allow-none): A child #GtkWidget, or %NULL.
2537  *
2538  * Sets the widget in the header to be @widget.  If widget is %NULL, then the
2539  * header button is set with a #GtkLabel set to the title of @tree_column.
2540  **/
2541 void
2542 gtk_tree_view_column_set_widget (GtkTreeViewColumn *tree_column,
2543                                  GtkWidget         *widget)
2544 {
2545   GtkTreeViewColumnPrivate *priv;
2546
2547   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2548   g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
2549
2550   priv = tree_column->priv;
2551
2552   if (widget)
2553     g_object_ref_sink (widget);
2554
2555   if (priv->child)
2556     g_object_unref (priv->child);
2557
2558   priv->child = widget;
2559   gtk_tree_view_column_update_button (tree_column);
2560   g_object_notify (G_OBJECT (tree_column), "widget");
2561 }
2562
2563 /**
2564  * gtk_tree_view_column_get_widget:
2565  * @tree_column: A #GtkTreeViewColumn.
2566  *
2567  * Returns the #GtkWidget in the button on the column header.
2568  * If a custom widget has not been set then %NULL is returned.
2569  *
2570  * Return value: (transfer none): The #GtkWidget in the column
2571  *     header, or %NULL
2572  **/
2573 GtkWidget *
2574 gtk_tree_view_column_get_widget (GtkTreeViewColumn *tree_column)
2575 {
2576   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2577
2578   return tree_column->priv->child;
2579 }
2580
2581 /**
2582  * gtk_tree_view_column_set_alignment:
2583  * @tree_column: A #GtkTreeViewColumn.
2584  * @xalign: The alignment, which is between [0.0 and 1.0] inclusive.
2585  *
2586  * Sets the alignment of the title or custom widget inside the column header.
2587  * The alignment determines its location inside the button -- 0.0 for left, 0.5
2588  * for center, 1.0 for right.
2589  **/
2590 void
2591 gtk_tree_view_column_set_alignment (GtkTreeViewColumn *tree_column,
2592                                     gfloat             xalign)
2593 {
2594   GtkTreeViewColumnPrivate *priv;
2595
2596   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2597
2598   priv = tree_column->priv;
2599
2600   xalign = CLAMP (xalign, 0.0, 1.0);
2601
2602   if (priv->xalign == xalign)
2603     return;
2604
2605   priv->xalign = xalign;
2606   gtk_tree_view_column_update_button (tree_column);
2607   g_object_notify (G_OBJECT (tree_column), "alignment");
2608 }
2609
2610 /**
2611  * gtk_tree_view_column_get_alignment:
2612  * @tree_column: A #GtkTreeViewColumn.
2613  *
2614  * Returns the current x alignment of @tree_column.  This value can range
2615  * between 0.0 and 1.0.
2616  *
2617  * Return value: The current alignent of @tree_column.
2618  **/
2619 gfloat
2620 gtk_tree_view_column_get_alignment (GtkTreeViewColumn *tree_column)
2621 {
2622   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0.5);
2623
2624   return tree_column->priv->xalign;
2625 }
2626
2627 /**
2628  * gtk_tree_view_column_set_reorderable:
2629  * @tree_column: A #GtkTreeViewColumn
2630  * @reorderable: %TRUE, if the column can be reordered.
2631  *
2632  * If @reorderable is %TRUE, then the column can be reordered by the end user
2633  * dragging the header.
2634  **/
2635 void
2636 gtk_tree_view_column_set_reorderable (GtkTreeViewColumn *tree_column,
2637                                       gboolean           reorderable)
2638 {
2639   GtkTreeViewColumnPrivate *priv;
2640
2641   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2642
2643   priv = tree_column->priv;
2644
2645   /*  if (reorderable)
2646       gtk_tree_view_column_set_clickable (tree_column, TRUE);*/
2647
2648   if (priv->reorderable == (reorderable?TRUE:FALSE))
2649     return;
2650
2651   priv->reorderable = (reorderable?TRUE:FALSE);
2652   gtk_tree_view_column_update_button (tree_column);
2653   g_object_notify (G_OBJECT (tree_column), "reorderable");
2654 }
2655
2656 /**
2657  * gtk_tree_view_column_get_reorderable:
2658  * @tree_column: A #GtkTreeViewColumn
2659  *
2660  * Returns %TRUE if the @tree_column can be reordered by the user.
2661  *
2662  * Return value: %TRUE if the @tree_column can be reordered by the user.
2663  **/
2664 gboolean
2665 gtk_tree_view_column_get_reorderable (GtkTreeViewColumn *tree_column)
2666 {
2667   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2668
2669   return tree_column->priv->reorderable;
2670 }
2671
2672
2673 /**
2674  * gtk_tree_view_column_set_sort_column_id:
2675  * @tree_column: a #GtkTreeViewColumn
2676  * @sort_column_id: The @sort_column_id of the model to sort on.
2677  *
2678  * Sets the logical @sort_column_id that this column sorts on when this column
2679  * is selected for sorting.  Doing so makes the column header clickable.
2680  **/
2681 void
2682 gtk_tree_view_column_set_sort_column_id (GtkTreeViewColumn *tree_column,
2683                                          gint               sort_column_id)
2684 {
2685   GtkTreeViewColumnPrivate *priv;
2686
2687   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2688   g_return_if_fail (sort_column_id >= -1);
2689
2690   priv = tree_column->priv;
2691
2692   if (priv->sort_column_id == sort_column_id)
2693     return;
2694
2695   priv->sort_column_id = sort_column_id;
2696
2697   /* Handle unsetting the id */
2698   if (sort_column_id == -1)
2699     {
2700       GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
2701
2702       if (priv->sort_clicked_signal)
2703         {
2704           g_signal_handler_disconnect (tree_column, priv->sort_clicked_signal);
2705           priv->sort_clicked_signal = 0;
2706         }
2707
2708       if (priv->sort_column_changed_signal)
2709         {
2710           g_signal_handler_disconnect (model, priv->sort_column_changed_signal);
2711           priv->sort_column_changed_signal = 0;
2712         }
2713
2714       gtk_tree_view_column_set_sort_order (tree_column, GTK_SORT_ASCENDING);
2715       gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
2716       gtk_tree_view_column_set_clickable (tree_column, FALSE);
2717       g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2718       return;
2719     }
2720
2721   gtk_tree_view_column_set_clickable (tree_column, TRUE);
2722
2723   if (! priv->sort_clicked_signal)
2724     priv->sort_clicked_signal = g_signal_connect (tree_column,
2725                                                   "clicked",
2726                                                   G_CALLBACK (gtk_tree_view_column_sort),
2727                                                   NULL);
2728
2729   gtk_tree_view_column_setup_sort_column_id_callback (tree_column);
2730   g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2731 }
2732
2733 /**
2734  * gtk_tree_view_column_get_sort_column_id:
2735  * @tree_column: a #GtkTreeViewColumn
2736  *
2737  * Gets the logical @sort_column_id that the model sorts on when this
2738  * column is selected for sorting.
2739  * See gtk_tree_view_column_set_sort_column_id().
2740  *
2741  * Return value: the current @sort_column_id for this column, or -1 if
2742  *               this column can't be used for sorting.
2743  **/
2744 gint
2745 gtk_tree_view_column_get_sort_column_id (GtkTreeViewColumn *tree_column)
2746 {
2747   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2748
2749   return tree_column->priv->sort_column_id;
2750 }
2751
2752 /**
2753  * gtk_tree_view_column_set_sort_indicator:
2754  * @tree_column: a #GtkTreeViewColumn
2755  * @setting: %TRUE to display an indicator that the column is sorted
2756  *
2757  * Call this function with a @setting of %TRUE to display an arrow in
2758  * the header button indicating the column is sorted. Call
2759  * gtk_tree_view_column_set_sort_order() to change the direction of
2760  * the arrow.
2761  *
2762  **/
2763 void
2764 gtk_tree_view_column_set_sort_indicator (GtkTreeViewColumn     *tree_column,
2765                                          gboolean               setting)
2766 {
2767   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2768
2769   setting = setting != FALSE;
2770
2771   if (setting == tree_column->priv->show_sort_indicator)
2772     return;
2773
2774   tree_column->priv->show_sort_indicator = setting;
2775   gtk_tree_view_column_update_button (tree_column);
2776   g_object_notify (G_OBJECT (tree_column), "sort-indicator");
2777 }
2778
2779 /**
2780  * gtk_tree_view_column_get_sort_indicator:
2781  * @tree_column: a #GtkTreeViewColumn
2782  *
2783  * Gets the value set by gtk_tree_view_column_set_sort_indicator().
2784  *
2785  * Return value: whether the sort indicator arrow is displayed
2786  **/
2787 gboolean
2788 gtk_tree_view_column_get_sort_indicator  (GtkTreeViewColumn     *tree_column)
2789 {
2790   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2791
2792   return tree_column->priv->show_sort_indicator;
2793 }
2794
2795 /**
2796  * gtk_tree_view_column_set_sort_order:
2797  * @tree_column: a #GtkTreeViewColumn
2798  * @order: sort order that the sort indicator should indicate
2799  *
2800  * Changes the appearance of the sort indicator.
2801  *
2802  * This <emphasis>does not</emphasis> actually sort the model.  Use
2803  * gtk_tree_view_column_set_sort_column_id() if you want automatic sorting
2804  * support.  This function is primarily for custom sorting behavior, and should
2805  * be used in conjunction with gtk_tree_sortable_set_sort_column_id() to do
2806  * that. For custom models, the mechanism will vary.
2807  *
2808  * The sort indicator changes direction to indicate normal sort or reverse sort.
2809  * Note that you must have the sort indicator enabled to see anything when
2810  * calling this function; see gtk_tree_view_column_set_sort_indicator().
2811  **/
2812 void
2813 gtk_tree_view_column_set_sort_order      (GtkTreeViewColumn     *tree_column,
2814                                           GtkSortType            order)
2815 {
2816   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2817
2818   if (order == tree_column->priv->sort_order)
2819     return;
2820
2821   tree_column->priv->sort_order = order;
2822   gtk_tree_view_column_update_button (tree_column);
2823   g_object_notify (G_OBJECT (tree_column), "sort-order");
2824 }
2825
2826 /**
2827  * gtk_tree_view_column_get_sort_order:
2828  * @tree_column: a #GtkTreeViewColumn
2829  *
2830  * Gets the value set by gtk_tree_view_column_set_sort_order().
2831  *
2832  * Return value: the sort order the sort indicator is indicating
2833  **/
2834 GtkSortType
2835 gtk_tree_view_column_get_sort_order      (GtkTreeViewColumn     *tree_column)
2836 {
2837   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2838
2839   return tree_column->priv->sort_order;
2840 }
2841
2842 /**
2843  * gtk_tree_view_column_cell_set_cell_data:
2844  * @tree_column: A #GtkTreeViewColumn.
2845  * @tree_model: The #GtkTreeModel to to get the cell renderers attributes from.
2846  * @iter: The #GtkTreeIter to to get the cell renderer's attributes from.
2847  * @is_expander: %TRUE, if the row has children
2848  * @is_expanded: %TRUE, if the row has visible children
2849  *
2850  * Sets the cell renderer based on the @tree_model and @iter.  That is, for
2851  * every attribute mapping in @tree_column, it will get a value from the set
2852  * column on the @iter, and use that value to set the attribute on the cell
2853  * renderer.  This is used primarily by the #GtkTreeView.
2854  **/
2855 void
2856 gtk_tree_view_column_cell_set_cell_data (GtkTreeViewColumn *tree_column,
2857                                          GtkTreeModel      *tree_model,
2858                                          GtkTreeIter       *iter,
2859                                          gboolean           is_expander,
2860                                          gboolean           is_expanded)
2861 {
2862   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2863
2864   if (tree_model == NULL)
2865     return;
2866
2867   gtk_cell_area_apply_attributes (tree_column->priv->cell_area, tree_model, iter,
2868                                   is_expander, is_expanded);
2869 }
2870
2871 /**
2872  * gtk_tree_view_column_cell_get_size:
2873  * @tree_column: A #GtkTreeViewColumn.
2874  * @cell_area: (allow-none): The area a cell in the column will be allocated, or %NULL
2875  * @x_offset: (out) (allow-none): location to return x offset of a cell relative to @cell_area, or %NULL
2876  * @y_offset: (out) (allow-none): location to return y offset of a cell relative to @cell_area, or %NULL
2877  * @width: (out) (allow-none): location to return width needed to render a cell, or %NULL
2878  * @height: (out) (allow-none): location to return height needed to render a cell, or %NULL
2879  *
2880  * Obtains the width and height needed to render the column.  This is used
2881  * primarily by the #GtkTreeView.
2882  **/
2883 void
2884 gtk_tree_view_column_cell_get_size (GtkTreeViewColumn  *tree_column,
2885                                     const GdkRectangle *cell_area,
2886                                     gint               *x_offset,
2887                                     gint               *y_offset,
2888                                     gint               *width,
2889                                     gint               *height)
2890 {
2891   GtkTreeViewColumnPrivate *priv;
2892   gint min_width = 0, min_height = 0;
2893
2894   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2895
2896   priv = tree_column->priv;
2897
2898   g_signal_handler_block (priv->cell_area_context,
2899                           priv->context_changed_signal);
2900
2901   gtk_cell_area_get_preferred_width (priv->cell_area,
2902                                      priv->cell_area_context,
2903                                      priv->tree_view,
2904                                      NULL, NULL);
2905
2906   gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &min_width, NULL);
2907
2908   gtk_cell_area_get_preferred_height_for_width (priv->cell_area,
2909                                                 priv->cell_area_context,
2910                                                 priv->tree_view,
2911                                                 min_width,
2912                                                 &min_height,
2913                                                 NULL);
2914
2915   g_signal_handler_unblock (priv->cell_area_context,
2916                             priv->context_changed_signal);
2917
2918
2919   if (height)
2920     * height = min_height;
2921   if (width)
2922     * width = min_width;
2923
2924 }
2925
2926 /**
2927  * gtk_tree_view_column_cell_render:
2928  * @tree_column: A #GtkTreeViewColumn.
2929  * @cr: cairo context to draw to
2930  * @background_area: entire cell area (including tree expanders and maybe padding on the sides)
2931  * @cell_area: area normally rendered by a cell renderer
2932  * @flags: flags that affect rendering
2933  *
2934  * Renders the cell contained by #tree_column. This is used primarily by the
2935  * #GtkTreeView.
2936  **/
2937 void
2938 _gtk_tree_view_column_cell_render (GtkTreeViewColumn  *tree_column,
2939                                    cairo_t            *cr,
2940                                    const GdkRectangle *background_area,
2941                                    const GdkRectangle *cell_area,
2942                                    guint               flags,
2943                                    gboolean            draw_focus)
2944 {
2945   GtkTreeViewColumnPrivate *priv;
2946
2947   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2948   g_return_if_fail (cr != NULL);
2949   g_return_if_fail (background_area != NULL);
2950   g_return_if_fail (cell_area != NULL);
2951
2952   priv = tree_column->priv;
2953
2954   cairo_save (cr);
2955
2956   gtk_cell_area_render (priv->cell_area, priv->cell_area_context,
2957                         priv->tree_view, cr,
2958                         background_area, cell_area, flags,
2959                         draw_focus);
2960
2961   cairo_restore (cr);
2962 }
2963
2964 gboolean
2965 _gtk_tree_view_column_cell_event (GtkTreeViewColumn  *tree_column,
2966                                   GdkEvent           *event,
2967                                   const GdkRectangle *cell_area,
2968                                   guint               flags)
2969 {
2970   GtkTreeViewColumnPrivate *priv;
2971
2972   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2973
2974   priv = tree_column->priv;
2975
2976   return gtk_cell_area_event (priv->cell_area,
2977                               priv->cell_area_context,
2978                               priv->tree_view,
2979                               event,
2980                               cell_area,
2981                               flags);
2982 }
2983
2984 /**
2985  * gtk_tree_view_column_cell_is_visible:
2986  * @tree_column: A #GtkTreeViewColumn
2987  *
2988  * Returns %TRUE if any of the cells packed into the @tree_column are visible.
2989  * For this to be meaningful, you must first initialize the cells with
2990  * gtk_tree_view_column_cell_set_cell_data()
2991  *
2992  * Return value: %TRUE, if any of the cells packed into the @tree_column are currently visible
2993  **/
2994 gboolean
2995 gtk_tree_view_column_cell_is_visible (GtkTreeViewColumn *tree_column)
2996 {
2997   GList *list;
2998   GList *cells;
2999   GtkTreeViewColumnPrivate *priv;
3000
3001   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
3002
3003   priv = tree_column->priv;
3004
3005   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
3006   for (list = cells; list; list = list->next)
3007     {
3008       if (gtk_cell_renderer_get_visible (list->data))
3009         {
3010           g_list_free (cells);
3011           return TRUE;
3012         }
3013     }
3014
3015   g_list_free (cells);
3016
3017   return FALSE;
3018 }
3019
3020 /**
3021  * gtk_tree_view_column_focus_cell:
3022  * @tree_column: A #GtkTreeViewColumn
3023  * @cell: A #GtkCellRenderer
3024  *
3025  * Sets the current keyboard focus to be at @cell, if the column contains
3026  * 2 or more editable and activatable cells.
3027  *
3028  * Since: 2.2
3029  **/
3030 void
3031 gtk_tree_view_column_focus_cell (GtkTreeViewColumn *tree_column,
3032                                  GtkCellRenderer   *cell)
3033 {
3034   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
3035   g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
3036
3037   gtk_cell_area_set_focus_cell (tree_column->priv->cell_area, cell);
3038 }
3039
3040 void
3041 _gtk_tree_view_column_cell_set_dirty (GtkTreeViewColumn *tree_column,
3042                                       gboolean           install_handler)
3043 {
3044   GtkTreeViewColumnPrivate *priv = tree_column->priv;
3045
3046   priv->dirty = TRUE;
3047   priv->padding = 0;
3048   priv->width = 0;
3049
3050   /* Issue a manual reset on the context to have all
3051    * sizes re-requested for the context.
3052    */
3053   g_signal_handler_block (priv->cell_area_context,
3054                           priv->context_changed_signal);
3055   gtk_cell_area_context_reset (priv->cell_area_context);
3056   g_signal_handler_unblock (priv->cell_area_context,
3057                             priv->context_changed_signal);
3058
3059   if (priv->tree_view &&
3060       gtk_widget_get_realized (priv->tree_view))
3061     {
3062       _gtk_tree_view_install_mark_rows_col_dirty (GTK_TREE_VIEW (priv->tree_view), install_handler);
3063       gtk_widget_queue_resize (priv->tree_view);
3064     }
3065 }
3066
3067 gboolean
3068 _gtk_tree_view_column_cell_get_dirty (GtkTreeViewColumn  *tree_column)
3069 {
3070   return tree_column->priv->dirty;
3071 }
3072
3073 /**
3074  * gtk_tree_view_column_cell_get_position:
3075  * @tree_column: a #GtkTreeViewColumn
3076  * @cell_renderer: a #GtkCellRenderer
3077  * @x_offset: (out) (allow-none): return location for the horizontal
3078  *            position of @cell within @tree_column, may be %NULL
3079  * @width: (out) (allow-none): return location for the width of @cell,
3080  *         may be %NULL
3081  *
3082  * Obtains the horizontal position and size of a cell in a column. If the
3083  * cell is not found in the column, @start_pos and @width are not changed and
3084  * %FALSE is returned.
3085  *
3086  * Return value: %TRUE if @cell belongs to @tree_column.
3087  */
3088 gboolean
3089 gtk_tree_view_column_cell_get_position (GtkTreeViewColumn *tree_column,
3090                                         GtkCellRenderer   *cell_renderer,
3091                                         gint              *x_offset,
3092                                         gint              *width)
3093 {
3094   GtkTreeViewColumnPrivate *priv;
3095   GdkRectangle cell_area;
3096   GdkRectangle allocation;
3097
3098   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
3099   g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell_renderer), FALSE);
3100
3101   priv = tree_column->priv;
3102
3103   if (! gtk_cell_area_has_renderer (priv->cell_area, cell_renderer))
3104     return FALSE;
3105
3106   gtk_tree_view_get_background_area (GTK_TREE_VIEW (priv->tree_view),
3107                                      NULL, tree_column, &cell_area);
3108
3109   gtk_cell_area_get_cell_allocation (priv->cell_area,
3110                                      priv->cell_area_context,
3111                                      priv->tree_view,
3112                                      cell_renderer,
3113                                      &cell_area,
3114                                      &allocation);
3115
3116   if (x_offset)
3117     *x_offset = allocation.x - cell_area.x;
3118
3119   if (width)
3120     *width = allocation.width;
3121
3122   return TRUE;
3123 }
3124
3125 /**
3126  * gtk_tree_view_column_queue_resize:
3127  * @tree_column: A #GtkTreeViewColumn
3128  *
3129  * Flags the column, and the cell renderers added to this column, to have
3130  * their sizes renegotiated.
3131  *
3132  * Since: 2.8
3133  **/
3134 void
3135 gtk_tree_view_column_queue_resize (GtkTreeViewColumn *tree_column)
3136 {
3137   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
3138
3139   if (tree_column->priv->tree_view)
3140     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
3141 }
3142
3143 /**
3144  * gtk_tree_view_column_get_tree_view:
3145  * @tree_column: A #GtkTreeViewColumn
3146  *
3147  * Returns the #GtkTreeView wherein @tree_column has been inserted.
3148  * If @column is currently not inserted in any tree view, %NULL is
3149  * returned.
3150  *
3151  * Return value: (transfer none): The tree view wherein @column has
3152  *     been inserted if any, %NULL otherwise.
3153  *
3154  * Since: 2.12
3155  */
3156 GtkWidget *
3157 gtk_tree_view_column_get_tree_view (GtkTreeViewColumn *tree_column)
3158 {
3159   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
3160
3161   return tree_column->priv->tree_view;
3162 }
3163
3164 /**
3165  * gtk_tree_view_column_get_button:
3166  * @tree_column: A #GtkTreeViewColumn
3167  *
3168  * Returns the button used in the treeview column header
3169  *
3170  * Return value: (transfer none): The button for the column header.
3171  *
3172  * Since: 3.0
3173  */
3174 GtkWidget *
3175 gtk_tree_view_column_get_button (GtkTreeViewColumn *tree_column)
3176 {
3177   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
3178
3179   return tree_column->priv->button;
3180 }
3181
3182 GdkWindow *
3183 _gtk_tree_view_column_get_window (GtkTreeViewColumn  *column)
3184 {
3185   return column->priv->window;
3186 }
3187
3188 void
3189 _gtk_tree_view_column_push_padding (GtkTreeViewColumn  *column,
3190                                     gint                padding)
3191 {
3192   column->priv->padding = MAX (column->priv->padding, padding);
3193 }
3194
3195 gint
3196 _gtk_tree_view_column_get_requested_width (GtkTreeViewColumn  *column)
3197 {
3198   gint requested_width;
3199
3200   gtk_cell_area_context_get_preferred_width (column->priv->cell_area_context, &requested_width, NULL);
3201
3202   return requested_width + column->priv->padding;
3203 }
3204
3205 gint
3206 _gtk_tree_view_column_get_drag_x (GtkTreeViewColumn  *column)
3207 {
3208   return column->priv->drag_x;
3209 }
3210
3211 GtkCellAreaContext *
3212 _gtk_tree_view_column_get_context (GtkTreeViewColumn  *column)
3213 {
3214   return column->priv->cell_area_context;
3215 }