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

   1 /* gtktreeviewcolumn.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include "gtktreeviewcolumn.h"
  23
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtktreeprivate.h"
  28 #include "gtkcelllayout.h"
  29 #include "gtkbutton.h"
  30 #include "gtkalignment.h"
  31 #include "gtklabel.h"
  32 #include "gtkhbox.h"
  33 #include "gtkmarshalers.h"
  34 #include "gtkarrow.h"
  35 #include "gtkcellareacontext.h"
  36 #include "gtkcellareabox.h"
  37 #include "gtkprivate.h"
  38 #include "gtkintl.h"
  39 #include "gtktypebuiltins.h"
  40
  41
  42 /**
  43  * SECTION:gtktreeviewcolumn
  44  * @Short_description: A visible column in a GtkTreeView widget
  45  * @Title: GtkTreeViewColumn
  46  * @See_also: #GtkTreeView, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode, #GtkTreeSortable,
  47  *   #GtkTreeModelSort, #GtkListStore, #GtkTreeStore, #GtkCellRenderer, #GtkCellEditable,
  48  *   #GtkCellRendererPixbuf, #GtkCellRendererText, #GtkCellRendererToggle
  49  *
  50  * The GtkTreeViewColumn object represents a visible column in a #GtkTreeView widget.
  51  * It allows to set properties of the column header, and functions as a holding pen for
  52  * the cell renderers which determine how the data in the column is displayed.
  53  *
  54  * Please refer to the <link linkend="TreeWidget">tree widget conceptual overview</link>
  55  * for an overview of all the objects and data types related to the tree widget and how
  56  * they work together.
  57  */
  58
  59
  60 /* Type methods */
  61 static void gtk_tree_view_column_cell_layout_init              (GtkCellLayoutIface      *iface);
  62
  63 /* GObject methods */
  64 static void gtk_tree_view_column_set_property                  (GObject                 *object,
  65                                                                 guint                    prop_id,
  66                                                                 const GValue            *value,
  67                                                                 GParamSpec              *pspec);
  68 static void gtk_tree_view_column_get_property                  (GObject                 *object,
  69                                                                 guint                    prop_id,
  70                                                                 GValue                  *value,
  71                                                                 GParamSpec              *pspec);
  72 static void gtk_tree_view_column_finalize                      (GObject                 *object);
  73 static void gtk_tree_view_column_dispose                       (GObject                 *object);
  74 static GObject *gtk_tree_view_column_constructor               (GType                    type,
  75                                                                 guint                    n_construct_properties,
  76                                                                 GObjectConstructParam   *construct_properties);
  77
  78 /* GtkCellLayout implementation */
  79 static void       gtk_tree_view_column_ensure_cell_area        (GtkTreeViewColumn      *column,
  80                                                                 GtkCellArea            *cell_area);
  81
  82 static GtkCellArea *gtk_tree_view_column_cell_layout_get_area  (GtkCellLayout           *cell_layout);
  83
  84 /* Button handling code */
  85 static void gtk_tree_view_column_create_button                 (GtkTreeViewColumn       *tree_column);
  86 static void gtk_tree_view_column_update_button                 (GtkTreeViewColumn       *tree_column);
  87
  88 /* Button signal handlers */
  89 static gint gtk_tree_view_column_button_event                  (GtkWidget               *widget,
  90                                                                 GdkEvent                *event,
  91                                                                 gpointer                 data);
  92 static void gtk_tree_view_column_button_clicked                (GtkWidget               *widget,
  93                                                                 gpointer                 data);
  94 static gboolean gtk_tree_view_column_mnemonic_activate         (GtkWidget *widget,
  95                                                                 gboolean   group_cycling,
  96                                                                 gpointer   data);
  97
  98 /* Property handlers */
  99 static void gtk_tree_view_model_sort_column_changed            (GtkTreeSortable         *sortable,
 100                                                                 GtkTreeViewColumn       *tree_column);
 101
 102 /* GtkCellArea/GtkCellAreaContext callbacks */
 103 static void gtk_tree_view_column_context_changed               (GtkCellAreaContext      *context,
 104                                                                 GParamSpec              *pspec,
 105                                                                 GtkTreeViewColumn       *tree_column);
 106 static void gtk_tree_view_column_add_editable_callback         (GtkCellArea             *area,
 107                                                                 GtkCellRenderer         *renderer,
 108                                                                 GtkCellEditable         *edit_widget,
 109                                                                 GdkRectangle            *cell_area,
 110                                                                 const gchar             *path_string,
 111                                                                 gpointer                 user_data);
 112 static void gtk_tree_view_column_remove_editable_callback      (GtkCellArea             *area,
 113                                                                 GtkCellRenderer         *renderer,
 114                                                                 GtkCellEditable         *edit_widget,
 115                                                                 gpointer                 user_data);
 116
 117 /* Internal functions */
 118 static void gtk_tree_view_column_sort                          (GtkTreeViewColumn       *tree_column,
 119                                                                 gpointer                 data);
 120 static void gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn       *tree_column);
 121 static void gtk_tree_view_column_set_attributesv               (GtkTreeViewColumn       *tree_column,
 122                                                                 GtkCellRenderer         *cell_renderer,
 123                                                                 va_list                  args);
 124
 125 /* GtkBuildable implementation */
 126 static void gtk_tree_view_column_buildable_init                 (GtkBuildableIface     *iface);
 127
 128
 129 struct _GtkTreeViewColumnPrivate
 130 {
 131   GtkWidget *tree_view;
 132   GtkWidget *button;
 133   GtkWidget *child;
 134   GtkWidget *arrow;
 135   GtkWidget *alignment;
 136   GdkWindow *window;
 137   gfloat xalign;
 138   gulong property_changed_signal;
 139
 140   /* Sizing fields */
 141   /* see gtk+/doc/tree-column-sizing.txt for more information on them */
 142   GtkTreeViewColumnSizing column_type;
 143   gint padding;
 144   gint resized_width;
 145   gint x_offset;
 146   gint width;
 147   gint fixed_width;
 148   gint min_width;
 149   gint max_width;
 150
 151   /* dragging columns */
 152   gint drag_x;
 153   gint drag_y;
 154
 155   gchar *title;
 156
 157   /* Sorting */
 158   gulong      sort_clicked_signal;
 159   gulong      sort_column_changed_signal;
 160   gint        sort_column_id;
 161   GtkSortType sort_order;
 162
 163   /* Cell area */
 164   GtkCellArea        *cell_area;
 165   GtkCellAreaContext *cell_area_context;
 166   gulong              add_editable_signal;
 167   gulong              remove_editable_signal;
 168   gulong              context_changed_signal;
 169
 170   /* Flags */
 171   guint visible             : 1;
 172   guint resizable           : 1;
 173   guint clickable           : 1;
 174   guint dirty               : 1;
 175   guint show_sort_indicator : 1;
 176   guint maybe_reordered     : 1;
 177   guint reorderable         : 1;
 178   guint use_resized_width   : 1;
 179   guint expand              : 1;
 180 };
 181
 182 enum
 183 {
 184   PROP_0,
 185   PROP_VISIBLE,
 186   PROP_RESIZABLE,
 187   PROP_X_OFFSET,
 188   PROP_WIDTH,
 189   PROP_SPACING,
 190   PROP_SIZING,
 191   PROP_FIXED_WIDTH,
 192   PROP_MIN_WIDTH,
 193   PROP_MAX_WIDTH,
 194   PROP_TITLE,
 195   PROP_EXPAND,
 196   PROP_CLICKABLE,
 197   PROP_WIDGET,
 198   PROP_ALIGNMENT,
 199   PROP_REORDERABLE,
 200   PROP_SORT_INDICATOR,
 201   PROP_SORT_ORDER,
 202   PROP_SORT_COLUMN_ID,
 203   PROP_CELL_AREA
 204 };
 205
 206 enum
 207 {
 208   CLICKED,
 209   LAST_SIGNAL
 210 };
 211
 212 static guint tree_column_signals[LAST_SIGNAL] = { 0 };
 213
 214 G_DEFINE_TYPE_WITH_CODE (GtkTreeViewColumn, gtk_tree_view_column, G_TYPE_INITIALLY_UNOWNED,
 215                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 216                                                 gtk_tree_view_column_cell_layout_init)
 217                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 218                                                 gtk_tree_view_column_buildable_init))
 219
 220
 221 static void
 222 gtk_tree_view_column_class_init (GtkTreeViewColumnClass *class)
 223 {
 224   GObjectClass *object_class;
 225
 226   object_class = (GObjectClass*) class;
 227
 228   class->clicked = NULL;
 229
 230   object_class->constructor = gtk_tree_view_column_constructor;
 231   object_class->finalize = gtk_tree_view_column_finalize;
 232   object_class->dispose = gtk_tree_view_column_dispose;
 233   object_class->set_property = gtk_tree_view_column_set_property;
 234   object_class->get_property = gtk_tree_view_column_get_property;
 235
 236   tree_column_signals[CLICKED] =
 237     g_signal_new (I_("clicked"),
 238                   G_OBJECT_CLASS_TYPE (object_class),
 239                   G_SIGNAL_RUN_LAST,
 240                   G_STRUCT_OFFSET (GtkTreeViewColumnClass, clicked),
 241                   NULL, NULL,
 242                   _gtk_marshal_VOID__VOID,
 243                   G_TYPE_NONE, 0);
 244
 245   g_object_class_install_property (object_class,
 246                                    PROP_VISIBLE,
 247                                    g_param_spec_boolean ("visible",
 248                                                         P_("Visible"),
 249                                                         P_("Whether to display the column"),
 250                                                          TRUE,
 251                                                          GTK_PARAM_READWRITE));
 252
 253   g_object_class_install_property (object_class,
 254                                    PROP_RESIZABLE,
 255                                    g_param_spec_boolean ("resizable",
 256                                                          P_("Resizable"),
 257                                                          P_("Column is user-resizable"),
 258                                                          FALSE,
 259                                                          GTK_PARAM_READWRITE));
 260
 261   g_object_class_install_property (object_class,
 262                                    PROP_X_OFFSET,
 263                                    g_param_spec_int ("x-offset",
 264                                                      P_("X position"),
 265                                                      P_("Current X position of the column"),
 266                                                      -G_MAXINT,
 267                                                      G_MAXINT,
 268                                                      0,
 269                                                      GTK_PARAM_READABLE));
 270
 271   g_object_class_install_property (object_class,
 272                                    PROP_WIDTH,
 273                                    g_param_spec_int ("width",
 274                                                      P_("Width"),
 275                                                      P_("Current width of the column"),
 276                                                      0,
 277                                                      G_MAXINT,
 278                                                      0,
 279                                                      GTK_PARAM_READABLE));
 280   g_object_class_install_property (object_class,
 281                                    PROP_SPACING,
 282                                    g_param_spec_int ("spacing",
 283                                                      P_("Spacing"),
 284                                                      P_("Space which is inserted between cells"),
 285                                                      0,
 286                                                      G_MAXINT,
 287                                                      0,
 288                                                      GTK_PARAM_READWRITE));
 289   g_object_class_install_property (object_class,
 290                                    PROP_SIZING,
 291                                    g_param_spec_enum ("sizing",
 292                                                       P_("Sizing"),
 293                                                       P_("Resize mode of the column"),
 294                                                       GTK_TYPE_TREE_VIEW_COLUMN_SIZING,
 295                                                       GTK_TREE_VIEW_COLUMN_GROW_ONLY,
 296                                                       GTK_PARAM_READWRITE));
 297
 298   g_object_class_install_property (object_class,
 299                                    PROP_FIXED_WIDTH,
 300                                    g_param_spec_int ("fixed-width",
 301                                                      P_("Fixed Width"),
 302                                                      P_("Current fixed width of the column"),
 303                                                      1,
 304                                                      G_MAXINT,
 305                                                      1, /* not useful */
 306                                                      GTK_PARAM_READWRITE));
 307
 308   g_object_class_install_property (object_class,
 309                                    PROP_MIN_WIDTH,
 310                                    g_param_spec_int ("min-width",
 311                                                      P_("Minimum Width"),
 312                                                      P_("Minimum allowed width of the column"),
 313                                                      -1,
 314                                                      G_MAXINT,
 315                                                      -1,
 316                                                      GTK_PARAM_READWRITE));
 317
 318   g_object_class_install_property (object_class,
 319                                    PROP_MAX_WIDTH,
 320                                    g_param_spec_int ("max-width",
 321                                                      P_("Maximum Width"),
 322                                                      P_("Maximum allowed width of the column"),
 323                                                      -1,
 324                                                      G_MAXINT,
 325                                                      -1,
 326                                                      GTK_PARAM_READWRITE));
 327
 328   g_object_class_install_property (object_class,
 329                                    PROP_TITLE,
 330                                    g_param_spec_string ("title",
 331                                                         P_("Title"),
 332                                                         P_("Title to appear in column header"),
 333                                                         "",
 334                                                         GTK_PARAM_READWRITE));
 335
 336   g_object_class_install_property (object_class,
 337                                    PROP_EXPAND,
 338                                    g_param_spec_boolean ("expand",
 339                                                          P_("Expand"),
 340                                                          P_("Column gets share of extra width allocated to the widget"),
 341                                                          FALSE,
 342                                                          GTK_PARAM_READWRITE));
 343
 344   g_object_class_install_property (object_class,
 345                                    PROP_CLICKABLE,
 346                                    g_param_spec_boolean ("clickable",
 347                                                         P_("Clickable"),
 348                                                         P_("Whether the header can be clicked"),
 349                                                          FALSE,
 350                                                          GTK_PARAM_READWRITE));
 351
 352
 353   g_object_class_install_property (object_class,
 354                                    PROP_WIDGET,
 355                                    g_param_spec_object ("widget",
 356                                                         P_("Widget"),
 357                                                         P_("Widget to put in column header button instead of column title"),
 358                                                         GTK_TYPE_WIDGET,
 359                                                         GTK_PARAM_READWRITE));
 360
 361   g_object_class_install_property (object_class,
 362                                    PROP_ALIGNMENT,
 363                                    g_param_spec_float ("alignment",
 364                                                        P_("Alignment"),
 365                                                        P_("X Alignment of the column header text or widget"),
 366                                                        0.0,
 367                                                        1.0,
 368                                                        0.0,
 369                                                        GTK_PARAM_READWRITE));
 370
 371   g_object_class_install_property (object_class,
 372                                    PROP_REORDERABLE,
 373                                    g_param_spec_boolean ("reorderable",
 374                                                          P_("Reorderable"),
 375                                                          P_("Whether the column can be reordered around the headers"),
 376                                                          FALSE,
 377                                                          GTK_PARAM_READWRITE));
 378
 379   g_object_class_install_property (object_class,
 380                                    PROP_SORT_INDICATOR,
 381                                    g_param_spec_boolean ("sort-indicator",
 382                                                         P_("Sort indicator"),
 383                                                         P_("Whether to show a sort indicator"),
 384                                                          FALSE,
 385                                                          GTK_PARAM_READWRITE));
 386
 387   g_object_class_install_property (object_class,
 388                                    PROP_SORT_ORDER,
 389                                    g_param_spec_enum ("sort-order",
 390                                                       P_("Sort order"),
 391                                                       P_("Sort direction the sort indicator should indicate"),
 392                                                       GTK_TYPE_SORT_TYPE,
 393                                                       GTK_SORT_ASCENDING,
 394                                                       GTK_PARAM_READWRITE));
 395
 396   /**
 397    * GtkTreeViewColumn:sort-column-id:
 398    *
 399    * Logical sort column ID this column sorts on when selected for sorting. Setting the sort column ID makes the column header
 400    * clickable. Set to %-1 to make the column unsortable.
 401    *
 402    * Since: 2.18
 403    **/
 404   g_object_class_install_property (object_class,
 405                                    PROP_SORT_COLUMN_ID,
 406                                    g_param_spec_int ("sort-column-id",
 407                                                      P_("Sort column ID"),
 408                                                      P_("Logical sort column ID this column sorts on when selected for sorting"),
 409                                                      -1,
 410                                                      G_MAXINT,
 411                                                      -1,
 412                                                      GTK_PARAM_READWRITE));
 413
 414   /**
 415    * GtkTreeViewColumn:cell-area:
 416    *
 417    * The #GtkCellArea used to layout cell renderers for this column.
 418    *
 419    * If no area is specified when creating the tree view column with gtk_tree_view_column_new_with_area()
 420    * a horizontally oriented #GtkCellAreaBox will be used.
 421    *
 422    * Since: 3.0
 423    */
 424   g_object_class_install_property (object_class,
 425                                    PROP_CELL_AREA,
 426                                    g_param_spec_object ("cell-area",
 427                                                         P_("Cell Area"),
 428                                                         P_("The GtkCellArea used to layout cells"),
 429                                                         GTK_TYPE_CELL_AREA,
 430                                                         GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 431
 432   g_type_class_add_private (class, sizeof (GtkTreeViewColumnPrivate));
 433 }
 434
 435 static void
 436 gtk_tree_view_column_custom_tag_end (GtkBuildable *buildable,
 437                                      GtkBuilder   *builder,
 438                                      GObject      *child,
 439                                      const gchar  *tagname,
 440                                      gpointer     *data)
 441 {
 442   /* Just ignore the boolean return from here */
 443   _gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data);
 444 }
 445
 446 static void
 447 gtk_tree_view_column_buildable_init (GtkBuildableIface *iface)
 448 {
 449   iface->add_child = _gtk_cell_layout_buildable_add_child;
 450   iface->custom_tag_start = _gtk_cell_layout_buildable_custom_tag_start;
 451   iface->custom_tag_end = gtk_tree_view_column_custom_tag_end;
 452 }
 453
 454 static void
 455 gtk_tree_view_column_cell_layout_init (GtkCellLayoutIface *iface)
 456 {
 457   iface->get_area = gtk_tree_view_column_cell_layout_get_area;
 458 }
 459
 460 static void
 461 gtk_tree_view_column_init (GtkTreeViewColumn *tree_column)
 462 {
 463   GtkTreeViewColumnPrivate *priv;
 464
 465   tree_column->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_column,
 466                                                    GTK_TYPE_TREE_VIEW_COLUMN,
 467                                                    GtkTreeViewColumnPrivate);
 468   priv = tree_column->priv;
 469
 470   priv->button = NULL;
 471   priv->xalign = 0.0;
 472   priv->width = 0;
 473   priv->padding = -1;
 474   priv->min_width = -1;
 475   priv->max_width = -1;
 476   priv->resized_width = 0;
 477   priv->column_type = GTK_TREE_VIEW_COLUMN_GROW_ONLY;
 478   priv->visible = TRUE;
 479   priv->resizable = FALSE;
 480   priv->expand = FALSE;
 481   priv->clickable = FALSE;
 482   priv->dirty = TRUE;
 483   priv->sort_order = GTK_SORT_ASCENDING;
 484   priv->show_sort_indicator = FALSE;
 485   priv->property_changed_signal = 0;
 486   priv->sort_clicked_signal = 0;
 487   priv->sort_column_changed_signal = 0;
 488   priv->sort_column_id = -1;
 489   priv->reorderable = FALSE;
 490   priv->maybe_reordered = FALSE;
 491   priv->fixed_width = 1;
 492   priv->use_resized_width = FALSE;
 493   priv->title = g_strdup ("");
 494 }
 495
 496 static GObject *
 497 gtk_tree_view_column_constructor (GType                  type,
 498                                   guint                  n_construct_properties,
 499                                   GObjectConstructParam *construct_properties)
 500 {
 501   GtkTreeViewColumn        *tree_column;
 502   GObject                  *object;
 503
 504   object = G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->constructor
 505     (type, n_construct_properties, construct_properties);
 506
 507   tree_column = (GtkTreeViewColumn *) object;
 508
 509   gtk_tree_view_column_ensure_cell_area (tree_column, NULL);
 510
 511   return object;
 512 }
 513
 514 static void
 515 gtk_tree_view_column_dispose (GObject *object)
 516 {
 517   GtkTreeViewColumn        *tree_column = (GtkTreeViewColumn *) object;
 518   GtkTreeViewColumnPrivate *priv        = tree_column->priv;
 519
 520   if (priv->cell_area_context)
 521     {
 522       g_signal_handler_disconnect (priv->cell_area_context,
 523                                    priv->context_changed_signal);
 524
 525       g_object_unref (priv->cell_area_context);
 526
 527       priv->cell_area_context = NULL;
 528       priv->context_changed_signal = 0;
 529     }
 530
 531   if (priv->cell_area)
 532     {
 533       g_signal_handler_disconnect (priv->cell_area,
 534                                    priv->add_editable_signal);
 535       g_signal_handler_disconnect (priv->cell_area,
 536                                    priv->remove_editable_signal);
 537
 538       g_object_unref (priv->cell_area);
 539       priv->cell_area = NULL;
 540       priv->add_editable_signal = 0;
 541       priv->remove_editable_signal = 0;
 542     }
 543
 544   if (priv->child)
 545     {
 546       g_object_unref (priv->child);
 547       priv->child = NULL;
 548     }
 549
 550   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->dispose (object);
 551 }
 552
 553 static void
 554 gtk_tree_view_column_finalize (GObject *object)
 555 {
 556   GtkTreeViewColumn        *tree_column = (GtkTreeViewColumn *) object;
 557   GtkTreeViewColumnPrivate *priv        = tree_column->priv;
 558
 559   g_free (priv->title);
 560
 561   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->finalize (object);
 562 }
 563
 564 static void
 565 gtk_tree_view_column_set_property (GObject         *object,
 566                                    guint            prop_id,
 567                                    const GValue    *value,
 568                                    GParamSpec      *pspec)
 569 {
 570   GtkTreeViewColumn *tree_column;
 571   GtkCellArea       *area;
 572
 573   tree_column = GTK_TREE_VIEW_COLUMN (object);
 574
 575   switch (prop_id)
 576     {
 577     case PROP_VISIBLE:
 578       gtk_tree_view_column_set_visible (tree_column,
 579                                         g_value_get_boolean (value));
 580       break;
 581
 582     case PROP_RESIZABLE:
 583       gtk_tree_view_column_set_resizable (tree_column,
 584                                           g_value_get_boolean (value));
 585       break;
 586
 587     case PROP_SIZING:
 588       gtk_tree_view_column_set_sizing (tree_column,
 589                                        g_value_get_enum (value));
 590       break;
 591
 592     case PROP_FIXED_WIDTH:
 593       gtk_tree_view_column_set_fixed_width (tree_column,
 594                                             g_value_get_int (value));
 595       break;
 596
 597     case PROP_MIN_WIDTH:
 598       gtk_tree_view_column_set_min_width (tree_column,
 599                                           g_value_get_int (value));
 600       break;
 601
 602     case PROP_MAX_WIDTH:
 603       gtk_tree_view_column_set_max_width (tree_column,
 604                                           g_value_get_int (value));
 605       break;
 606
 607     case PROP_SPACING:
 608       gtk_tree_view_column_set_spacing (tree_column,
 609                                         g_value_get_int (value));
 610       break;
 611
 612     case PROP_TITLE:
 613       gtk_tree_view_column_set_title (tree_column,
 614                                       g_value_get_string (value));
 615       break;
 616
 617     case PROP_EXPAND:
 618       gtk_tree_view_column_set_expand (tree_column,
 619                                        g_value_get_boolean (value));
 620       break;
 621
 622     case PROP_CLICKABLE:
 623       gtk_tree_view_column_set_clickable (tree_column,
 624                                           g_value_get_boolean (value));
 625       break;
 626
 627     case PROP_WIDGET:
 628       gtk_tree_view_column_set_widget (tree_column,
 629                                        (GtkWidget*) g_value_get_object (value));
 630       break;
 631
 632     case PROP_ALIGNMENT:
 633       gtk_tree_view_column_set_alignment (tree_column,
 634                                           g_value_get_float (value));
 635       break;
 636
 637     case PROP_REORDERABLE:
 638       gtk_tree_view_column_set_reorderable (tree_column,
 639                                             g_value_get_boolean (value));
 640       break;
 641
 642     case PROP_SORT_INDICATOR:
 643       gtk_tree_view_column_set_sort_indicator (tree_column,
 644                                                g_value_get_boolean (value));
 645       break;
 646
 647     case PROP_SORT_ORDER:
 648       gtk_tree_view_column_set_sort_order (tree_column,
 649                                            g_value_get_enum (value));
 650       break;
 651
 652     case PROP_SORT_COLUMN_ID:
 653       gtk_tree_view_column_set_sort_column_id (tree_column,
 654                                                g_value_get_int (value));
 655       break;
 656
 657     case PROP_CELL_AREA:
 658       /* Construct-only, can only be assigned once */
 659       area = g_value_get_object (value);
 660
 661       if (area)
 662         {
 663           if (tree_column->priv->cell_area != NULL)
 664             {
 665               g_warning ("cell-area has already been set, ignoring construct property");
 666               g_object_ref_sink (area);
 667               g_object_unref (area);
 668             }
 669           else
 670             gtk_tree_view_column_ensure_cell_area (tree_column, area);
 671         }
 672       break;
 673
 674     default:
 675       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 676       break;
 677     }
 678 }
 679
 680 static void
 681 gtk_tree_view_column_get_property (GObject         *object,
 682                                    guint            prop_id,
 683                                    GValue          *value,
 684                                    GParamSpec      *pspec)
 685 {
 686   GtkTreeViewColumn *tree_column;
 687
 688   tree_column = GTK_TREE_VIEW_COLUMN (object);
 689
 690   switch (prop_id)
 691     {
 692     case PROP_VISIBLE:
 693       g_value_set_boolean (value,
 694                            gtk_tree_view_column_get_visible (tree_column));
 695       break;
 696
 697     case PROP_RESIZABLE:
 698       g_value_set_boolean (value,
 699                            gtk_tree_view_column_get_resizable (tree_column));
 700       break;
 701
 702     case PROP_X_OFFSET:
 703       g_value_set_int (value,
 704                        gtk_tree_view_column_get_x_offset (tree_column));
 705       break;
 706
 707     case PROP_WIDTH:
 708       g_value_set_int (value,
 709                        gtk_tree_view_column_get_width (tree_column));
 710       break;
 711
 712     case PROP_SPACING:
 713       g_value_set_int (value,
 714                        gtk_tree_view_column_get_spacing (tree_column));
 715       break;
 716
 717     case PROP_SIZING:
 718       g_value_set_enum (value,
 719                         gtk_tree_view_column_get_sizing (tree_column));
 720       break;
 721
 722     case PROP_FIXED_WIDTH:
 723       g_value_set_int (value,
 724                        gtk_tree_view_column_get_fixed_width (tree_column));
 725       break;
 726
 727     case PROP_MIN_WIDTH:
 728       g_value_set_int (value,
 729                        gtk_tree_view_column_get_min_width (tree_column));
 730       break;
 731
 732     case PROP_MAX_WIDTH:
 733       g_value_set_int (value,
 734                        gtk_tree_view_column_get_max_width (tree_column));
 735       break;
 736
 737     case PROP_TITLE:
 738       g_value_set_string (value,
 739                           gtk_tree_view_column_get_title (tree_column));
 740       break;
 741
 742     case PROP_EXPAND:
 743       g_value_set_boolean (value,
 744                           gtk_tree_view_column_get_expand (tree_column));
 745       break;
 746
 747     case PROP_CLICKABLE:
 748       g_value_set_boolean (value,
 749                            gtk_tree_view_column_get_clickable (tree_column));
 750       break;
 751
 752     case PROP_WIDGET:
 753       g_value_set_object (value,
 754                           (GObject*) gtk_tree_view_column_get_widget (tree_column));
 755       break;
 756
 757     case PROP_ALIGNMENT:
 758       g_value_set_float (value,
 759                          gtk_tree_view_column_get_alignment (tree_column));
 760       break;
 761
 762     case PROP_REORDERABLE:
 763       g_value_set_boolean (value,
 764                            gtk_tree_view_column_get_reorderable (tree_column));
 765       break;
 766
 767     case PROP_SORT_INDICATOR:
 768       g_value_set_boolean (value,
 769                            gtk_tree_view_column_get_sort_indicator (tree_column));
 770       break;
 771
 772     case PROP_SORT_ORDER:
 773       g_value_set_enum (value,
 774                         gtk_tree_view_column_get_sort_order (tree_column));
 775       break;
 776
 777     case PROP_SORT_COLUMN_ID:
 778       g_value_set_int (value,
 779                        gtk_tree_view_column_get_sort_column_id (tree_column));
 780       break;
 781
 782     case PROP_CELL_AREA:
 783       g_value_set_object (value, tree_column->priv->cell_area);
 784       break;
 785
 786     default:
 787       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 788       break;
 789     }
 790 }
 791
 792 /* Implementation of GtkCellLayout interface
 793  */
 794
 795 static void
 796 gtk_tree_view_column_ensure_cell_area (GtkTreeViewColumn *column,
 797                                        GtkCellArea       *cell_area)
 798 {
 799   GtkTreeViewColumnPrivate *priv = column->priv;
 800
 801   if (priv->cell_area)
 802     return;
 803
 804   if (cell_area)
 805     priv->cell_area = cell_area;
 806   else
 807     priv->cell_area = gtk_cell_area_box_new ();
 808
 809   g_object_ref_sink (priv->cell_area);
 810
 811   priv->add_editable_signal =
 812     g_signal_connect (priv->cell_area, "add-editable",
 813                       G_CALLBACK (gtk_tree_view_column_add_editable_callback),
 814                       column);
 815   priv->remove_editable_signal =
 816     g_signal_connect (priv->cell_area, "remove-editable",
 817                       G_CALLBACK (gtk_tree_view_column_remove_editable_callback),
 818                       column);
 819
 820   priv->cell_area_context = gtk_cell_area_create_context (priv->cell_area);
 821
 822   priv->context_changed_signal =
 823     g_signal_connect (priv->cell_area_context, "notify",
 824                       G_CALLBACK (gtk_tree_view_column_context_changed),
 825                       column);
 826 }
 827
 828 static GtkCellArea *
 829 gtk_tree_view_column_cell_layout_get_area (GtkCellLayout   *cell_layout)
 830 {
 831   GtkTreeViewColumn        *column = GTK_TREE_VIEW_COLUMN (cell_layout);
 832   GtkTreeViewColumnPrivate *priv   = column->priv;
 833
 834   if (G_UNLIKELY (!priv->cell_area))
 835     gtk_tree_view_column_ensure_cell_area (column, NULL);
 836
 837   return priv->cell_area;
 838 }
 839
 840 /* Button handling code
 841  */
 842 static void
 843 gtk_tree_view_column_create_button (GtkTreeViewColumn *tree_column)
 844 {
 845   GtkTreeViewColumnPrivate *priv = tree_column->priv;
 846   GtkTreeView *tree_view;
 847   GtkWidget *child;
 848   GtkWidget *hbox;
 849
 850   tree_view = (GtkTreeView *) priv->tree_view;
 851
 852   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
 853   g_return_if_fail (priv->button == NULL);
 854
 855   gtk_widget_push_composite_child ();
 856   priv->button = gtk_button_new ();
 857   gtk_widget_add_events (priv->button, GDK_POINTER_MOTION_MASK);
 858   gtk_widget_pop_composite_child ();
 859
 860   /* make sure we own a reference to it as well. */
 861   if (_gtk_tree_view_get_header_window (tree_view))
 862     gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
 863
 864   gtk_widget_set_parent (priv->button, GTK_WIDGET (tree_view));
 865
 866   g_signal_connect (priv->button, "event",
 867                     G_CALLBACK (gtk_tree_view_column_button_event),
 868                     tree_column);
 869   g_signal_connect (priv->button, "clicked",
 870                     G_CALLBACK (gtk_tree_view_column_button_clicked),
 871                     tree_column);
 872
 873   priv->alignment = gtk_alignment_new (priv->xalign, 0.5, 0.0, 0.0);
 874
 875   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
 876   priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 877
 878   if (priv->child)
 879     child = priv->child;
 880   else
 881     {
 882       child = gtk_label_new (priv->title);
 883       gtk_widget_show (child);
 884     }
 885
 886   g_signal_connect (child, "mnemonic-activate",
 887                     G_CALLBACK (gtk_tree_view_column_mnemonic_activate),
 888                     tree_column);
 889
 890   if (priv->xalign <= 0.5)
 891     gtk_box_pack_end (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
 892   else
 893     gtk_box_pack_start (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
 894
 895   gtk_box_pack_start (GTK_BOX (hbox), priv->alignment, TRUE, TRUE, 0);
 896
 897   gtk_container_add (GTK_CONTAINER (priv->alignment), child);
 898   gtk_container_add (GTK_CONTAINER (priv->button), hbox);
 899
 900   gtk_widget_show (hbox);
 901   gtk_widget_show (priv->alignment);
 902   gtk_tree_view_column_update_button (tree_column);
 903 }
 904
 905 static void
 906 gtk_tree_view_column_update_button (GtkTreeViewColumn *tree_column)
 907 {
 908   GtkTreeViewColumnPrivate *priv = tree_column->priv;
 909   gint sort_column_id = -1;
 910   GtkWidget *hbox;
 911   GtkWidget *alignment;
 912   GtkWidget *arrow;
 913   GtkWidget *current_child;
 914   GtkArrowType arrow_type = GTK_ARROW_NONE;
 915   GtkTreeModel *model;
 916
 917   if (priv->tree_view)
 918     model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
 919   else
 920     model = NULL;
 921
 922   /* Create a button if necessary */
 923   if (priv->visible &&
 924       priv->button == NULL &&
 925       priv->tree_view &&
 926       gtk_widget_get_realized (priv->tree_view))
 927     gtk_tree_view_column_create_button (tree_column);
 928
 929   if (! priv->button)
 930     return;
 931
 932   hbox = gtk_bin_get_child (GTK_BIN (priv->button));
 933   alignment = priv->alignment;
 934   arrow = priv->arrow;
 935   current_child = gtk_bin_get_child (GTK_BIN (alignment));
 936
 937   /* Set up the actual button */
 938   gtk_alignment_set (GTK_ALIGNMENT (alignment), priv->xalign,
 939                      0.5, 0.0, 0.0);
 940
 941   if (priv->child)
 942     {
 943       if (current_child != priv->child)
 944         {
 945           gtk_container_remove (GTK_CONTAINER (alignment),
 946                                 current_child);
 947           gtk_container_add (GTK_CONTAINER (alignment),
 948                              priv->child);
 949         }
 950     }
 951   else
 952     {
 953       if (current_child == NULL)
 954         {
 955           current_child = gtk_label_new (NULL);
 956           gtk_widget_show (current_child);
 957           gtk_container_add (GTK_CONTAINER (alignment),
 958                              current_child);
 959         }
 960
 961       g_return_if_fail (GTK_IS_LABEL (current_child));
 962
 963       if (priv->title)
 964         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 965                                           priv->title);
 966       else
 967         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 968                                           "");
 969     }
 970
 971   if (GTK_IS_TREE_SORTABLE (model))
 972     gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
 973                                           &sort_column_id,
 974                                           NULL);
 975
 976   if (priv->show_sort_indicator)
 977     {
 978       gboolean alternative;
 979
 980       g_object_get (gtk_widget_get_settings (priv->tree_view),
 981                     "gtk-alternative-sort-arrows", &alternative,
 982                     NULL);
 983
 984       switch (priv->sort_order)
 985         {
 986           case GTK_SORT_ASCENDING:
 987             arrow_type = alternative ? GTK_ARROW_UP : GTK_ARROW_DOWN;
 988             break;
 989
 990           case GTK_SORT_DESCENDING:
 991             arrow_type = alternative ? GTK_ARROW_DOWN : GTK_ARROW_UP;
 992             break;
 993
 994           default:
 995             g_warning (G_STRLOC": bad sort order");
 996             break;
 997         }
 998     }
 999
1000   gtk_arrow_set (GTK_ARROW (arrow),
1001                  arrow_type,
1002                  GTK_SHADOW_IN);
1003
1004   /* Put arrow on the right if the text is left-or-center justified, and on the
1005    * left otherwise; do this by packing boxes, so flipping text direction will
1006    * reverse things
1007    */
1008   g_object_ref (arrow);
1009   gtk_container_remove (GTK_CONTAINER (hbox), arrow);
1010
1011   if (priv->xalign <= 0.5)
1012     {
1013       gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
1014     }
1015   else
1016     {
1017       gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
1018       /* move it to the front */
1019       gtk_box_reorder_child (GTK_BOX (hbox), arrow, 0);
1020     }
1021   g_object_unref (arrow);
1022
1023   if (priv->show_sort_indicator
1024       || (GTK_IS_TREE_SORTABLE (model) && priv->sort_column_id >= 0))
1025     gtk_widget_show (arrow);
1026   else
1027     gtk_widget_hide (arrow);
1028
1029   /* It's always safe to hide the button.  It isn't always safe to show it, as
1030    * if you show it before it's realized, it'll get the wrong window. */
1031   if (priv->button &&
1032       priv->tree_view != NULL &&
1033       gtk_widget_get_realized (priv->tree_view))
1034     {
1035       if (priv->visible)
1036         {
1037           if (gdk_window_is_visible (_gtk_tree_view_get_header_window (GTK_TREE_VIEW (priv->tree_view))))
1038             gtk_widget_show_now (priv->button);
1039
1040           if (priv->window)
1041             {
1042               if (priv->resizable)
1043                 {
1044                   gdk_window_show (priv->window);
1045                   gdk_window_raise (priv->window);
1046                 }
1047               else
1048                 {
1049                   gdk_window_hide (priv->window);
1050                 }
1051             }
1052         }
1053       else
1054         {
1055           gtk_widget_hide (priv->button);
1056           if (priv->window)
1057             gdk_window_hide (priv->window);
1058         }
1059     }
1060
1061   if (priv->reorderable || priv->clickable)
1062     {
1063       gtk_widget_set_can_focus (priv->button, TRUE);
1064     }
1065   else
1066     {
1067       gtk_widget_set_can_focus (priv->button, FALSE);
1068       if (gtk_widget_has_focus (priv->button))
1069         {
1070           GtkWidget *toplevel = gtk_widget_get_toplevel (priv->tree_view);
1071           if (gtk_widget_is_toplevel (toplevel))
1072             {
1073               gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
1074             }
1075         }
1076     }
1077   /* Queue a resize on the assumption that we always want to catch all changes
1078    * and columns don't change all that often.
1079    */
1080   if (gtk_widget_get_realized (priv->tree_view))
1081      gtk_widget_queue_resize (priv->tree_view);
1082
1083 }
1084
1085 /* Button signal handlers
1086  */
1087
1088 static gint
1089 gtk_tree_view_column_button_event (GtkWidget *widget,
1090                                    GdkEvent  *event,
1091                                    gpointer   data)
1092 {
1093   GtkTreeViewColumn        *column = (GtkTreeViewColumn *) data;
1094   GtkTreeViewColumnPrivate *priv   = column->priv;
1095
1096   g_return_val_if_fail (event != NULL, FALSE);
1097
1098   if (event->type == GDK_BUTTON_PRESS &&
1099       priv->reorderable &&
1100       ((GdkEventButton *)event)->button == 1)
1101     {
1102       priv->maybe_reordered = TRUE;
1103       gdk_window_get_pointer (gtk_button_get_event_window (GTK_BUTTON (widget)),
1104                               &priv->drag_x,
1105                               &priv->drag_y,
1106                               NULL);
1107       gtk_widget_grab_focus (widget);
1108     }
1109
1110   if (event->type == GDK_BUTTON_RELEASE ||
1111       event->type == GDK_LEAVE_NOTIFY)
1112     priv->maybe_reordered = FALSE;
1113
1114   if (event->type == GDK_MOTION_NOTIFY &&
1115       priv->maybe_reordered &&
1116       (gtk_drag_check_threshold (widget,
1117                                  priv->drag_x,
1118                                  priv->drag_y,
1119                                  (gint) ((GdkEventMotion *)event)->x,
1120                                  (gint) ((GdkEventMotion *)event)->y)))
1121     {
1122       priv->maybe_reordered = FALSE;
1123       _gtk_tree_view_column_start_drag (GTK_TREE_VIEW (priv->tree_view), column,
1124                                         event->motion.device);
1125       return TRUE;
1126     }
1127
1128   if (priv->clickable == FALSE)
1129     {
1130       switch (event->type)
1131         {
1132         case GDK_BUTTON_PRESS:
1133         case GDK_2BUTTON_PRESS:
1134         case GDK_3BUTTON_PRESS:
1135         case GDK_MOTION_NOTIFY:
1136         case GDK_BUTTON_RELEASE:
1137         case GDK_ENTER_NOTIFY:
1138         case GDK_LEAVE_NOTIFY:
1139           return TRUE;
1140         default:
1141           return FALSE;
1142         }
1143     }
1144   return FALSE;
1145 }
1146
1147
1148 static void
1149 gtk_tree_view_column_button_clicked (GtkWidget *widget, gpointer data)
1150 {
1151   g_signal_emit_by_name (data, "clicked");
1152 }
1153
1154 static gboolean
1155 gtk_tree_view_column_mnemonic_activate (GtkWidget *widget,
1156                                         gboolean   group_cycling,
1157                                         gpointer   data)
1158 {
1159   GtkTreeViewColumn        *column = (GtkTreeViewColumn *)data;
1160   GtkTreeViewColumnPrivate *priv   = column->priv;
1161
1162   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), FALSE);
1163
1164   _gtk_tree_view_set_focus_column (GTK_TREE_VIEW (priv->tree_view), column);
1165
1166   if (priv->clickable)
1167     gtk_button_clicked (GTK_BUTTON (priv->button));
1168   else if (gtk_widget_get_can_focus (priv->button))
1169     gtk_widget_grab_focus (priv->button);
1170   else
1171     gtk_widget_grab_focus (priv->tree_view);
1172
1173   return TRUE;
1174 }
1175
1176 static void
1177 gtk_tree_view_model_sort_column_changed (GtkTreeSortable   *sortable,
1178                                          GtkTreeViewColumn *column)
1179 {
1180   GtkTreeViewColumnPrivate *priv = column->priv;
1181   gint sort_column_id;
1182   GtkSortType order;
1183
1184   if (gtk_tree_sortable_get_sort_column_id (sortable,
1185                                             &sort_column_id,
1186                                             &order))
1187     {
1188       if (sort_column_id == priv->sort_column_id)
1189         {
1190           gtk_tree_view_column_set_sort_indicator (column, TRUE);
1191           gtk_tree_view_column_set_sort_order (column, order);
1192         }
1193       else
1194         {
1195           gtk_tree_view_column_set_sort_indicator (column, FALSE);
1196         }
1197     }
1198   else
1199     {
1200       gtk_tree_view_column_set_sort_indicator (column, FALSE);
1201     }
1202 }
1203
1204 static void
1205 gtk_tree_view_column_sort (GtkTreeViewColumn *tree_column,
1206                            gpointer           data)
1207 {
1208   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1209   GtkTreeModel *model;
1210   GtkTreeSortable *sortable;
1211   gint sort_column_id;
1212   GtkSortType order;
1213   gboolean has_sort_column;
1214   gboolean has_default_sort_func;
1215
1216   g_return_if_fail (priv->tree_view != NULL);
1217
1218   model    = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
1219   sortable = GTK_TREE_SORTABLE (model);
1220
1221   has_sort_column =
1222     gtk_tree_sortable_get_sort_column_id (sortable,
1223                                           &sort_column_id,
1224                                           &order);
1225   has_default_sort_func =
1226     gtk_tree_sortable_has_default_sort_func (sortable);
1227
1228   if (has_sort_column &&
1229       sort_column_id == priv->sort_column_id)
1230     {
1231       if (order == GTK_SORT_ASCENDING)
1232         gtk_tree_sortable_set_sort_column_id (sortable,
1233                                               priv->sort_column_id,
1234                                               GTK_SORT_DESCENDING);
1235       else if (order == GTK_SORT_DESCENDING && has_default_sort_func)
1236         gtk_tree_sortable_set_sort_column_id (sortable,
1237                                               GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
1238                                               GTK_SORT_ASCENDING);
1239       else
1240         gtk_tree_sortable_set_sort_column_id (sortable,
1241                                               priv->sort_column_id,
1242                                               GTK_SORT_ASCENDING);
1243     }
1244   else
1245     {
1246       gtk_tree_sortable_set_sort_column_id (sortable,
1247                                             priv->sort_column_id,
1248                                             GTK_SORT_ASCENDING);
1249     }
1250 }
1251
1252 static void
1253 gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn *tree_column)
1254 {
1255   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1256   GtkTreeModel *model;
1257
1258   if (priv->tree_view == NULL)
1259     return;
1260
1261   model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
1262
1263   if (model == NULL)
1264     return;
1265
1266   if (GTK_IS_TREE_SORTABLE (model) &&
1267       priv->sort_column_id != -1)
1268     {
1269       gint real_sort_column_id;
1270       GtkSortType real_order;
1271
1272       if (priv->sort_column_changed_signal == 0)
1273         priv->sort_column_changed_signal =
1274           g_signal_connect (model, "sort-column-changed",
1275                             G_CALLBACK (gtk_tree_view_model_sort_column_changed),
1276                             tree_column);
1277
1278       if (gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
1279                                                 &real_sort_column_id,
1280                                                 &real_order) &&
1281           (real_sort_column_id == priv->sort_column_id))
1282         {
1283           gtk_tree_view_column_set_sort_indicator (tree_column, TRUE);
1284           gtk_tree_view_column_set_sort_order (tree_column, real_order);
1285         }
1286       else
1287         {
1288           gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
1289         }
1290    }
1291 }
1292
1293 static void
1294 gtk_tree_view_column_context_changed  (GtkCellAreaContext      *context,
1295                                        GParamSpec              *pspec,
1296                                        GtkTreeViewColumn       *tree_column)
1297 {
1298   /* Here we want the column re-requested if the underlying context was
1299    * actually reset for any reason, this can happen if the underlying
1300    * area/cell configuration changes (i.e. cell packing properties
1301    * or cell spacing and the like)
1302    *
1303    * Note that we block this handler while requesting for sizes
1304    * so there is no need to check for the new context size being -1,
1305    * we also block the handler when explicitly resetting the context
1306    * so as to avoid some infinite stack recursion.
1307    */
1308   if (!strcmp (pspec->name, "minimum-width") ||
1309       !strcmp (pspec->name, "natural-width") ||
1310       !strcmp (pspec->name, "minimum-height") ||
1311       !strcmp (pspec->name, "natural-height"))
1312     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1313 }
1314
1315 static void
1316 gtk_tree_view_column_add_editable_callback (GtkCellArea       *area,
1317                                             GtkCellRenderer   *renderer,
1318                                             GtkCellEditable   *edit_widget,
1319                                             GdkRectangle      *cell_area,
1320                                             const gchar       *path_string,
1321                                             gpointer           user_data)
1322 {
1323   GtkTreeViewColumn        *column = user_data;
1324   GtkTreeViewColumnPrivate *priv   = column->priv;
1325   GtkTreePath              *path;
1326
1327   if (priv->tree_view)
1328     {
1329       path = gtk_tree_path_new_from_string (path_string);
1330
1331       _gtk_tree_view_add_editable (GTK_TREE_VIEW (priv->tree_view),
1332                                    column,
1333                                    path,
1334                                    edit_widget,
1335                                    cell_area);
1336
1337       gtk_tree_path_free (path);
1338     }
1339 }
1340
1341 static void
1342 gtk_tree_view_column_remove_editable_callback (GtkCellArea     *area,
1343                                                GtkCellRenderer *renderer,
1344                                                GtkCellEditable *edit_widget,
1345                                                gpointer         user_data)
1346 {
1347   GtkTreeViewColumn        *column = user_data;
1348   GtkTreeViewColumnPrivate *priv   = column->priv;
1349
1350   if (priv->tree_view)
1351     _gtk_tree_view_remove_editable (GTK_TREE_VIEW (priv->tree_view),
1352                                     column,
1353                                     edit_widget);
1354 }
1355
1356 /* Exported Private Functions.
1357  * These should only be called by gtktreeview.c or gtktreeviewcolumn.c
1358  */
1359 void
1360 _gtk_tree_view_column_realize_button (GtkTreeViewColumn *column)
1361 {
1362   GtkTreeViewColumnPrivate *priv = column->priv;
1363   GtkAllocation allocation;
1364   GtkTreeView *tree_view;
1365   GdkWindowAttr attr;
1366   guint attributes_mask;
1367   gboolean rtl;
1368
1369   tree_view = (GtkTreeView *)priv->tree_view;
1370   rtl       = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
1371
1372   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
1373   g_return_if_fail (gtk_widget_get_realized (priv->tree_view));
1374   g_return_if_fail (priv->button != NULL);
1375
1376   g_return_if_fail (_gtk_tree_view_get_header_window (tree_view) != NULL);
1377   gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
1378
1379   attr.window_type = GDK_WINDOW_CHILD;
1380   attr.wclass = GDK_INPUT_ONLY;
1381   attr.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
1382   attr.event_mask = gtk_widget_get_events (GTK_WIDGET (tree_view)) |
1383                     (GDK_BUTTON_PRESS_MASK |
1384                      GDK_BUTTON_RELEASE_MASK |
1385                      GDK_POINTER_MOTION_MASK |
1386                      GDK_POINTER_MOTION_HINT_MASK |
1387                      GDK_KEY_PRESS_MASK);
1388   attributes_mask = GDK_WA_CURSOR | GDK_WA_X | GDK_WA_Y;
1389   attr.cursor = gdk_cursor_new_for_display
1390     (gdk_window_get_display (_gtk_tree_view_get_header_window (tree_view)), GDK_SB_H_DOUBLE_ARROW);
1391   attr.y = 0;
1392   attr.width = TREE_VIEW_DRAG_WIDTH;
1393   attr.height = _gtk_tree_view_get_header_height (tree_view);
1394
1395   gtk_widget_get_allocation (priv->button, &allocation);
1396   attr.x       = (allocation.x + (rtl ? 0 : allocation.width)) - TREE_VIEW_DRAG_WIDTH / 2;
1397   priv->window = gdk_window_new (_gtk_tree_view_get_header_window (tree_view),
1398                                  &attr, attributes_mask);
1399   gdk_window_set_user_data (priv->window, tree_view);
1400
1401   gtk_tree_view_column_update_button (column);
1402
1403   g_object_unref (attr.cursor);
1404 }
1405
1406 void
1407 _gtk_tree_view_column_unrealize_button (GtkTreeViewColumn *column)
1408 {
1409   GtkTreeViewColumnPrivate *priv;
1410
1411   g_return_if_fail (column != NULL);
1412
1413   priv = column->priv;
1414   g_return_if_fail (priv->window != NULL);
1415
1416   gdk_window_set_user_data (priv->window, NULL);
1417   gdk_window_destroy (priv->window);
1418   priv->window = NULL;
1419 }
1420
1421 void
1422 _gtk_tree_view_column_unset_model (GtkTreeViewColumn *column,
1423                                    GtkTreeModel      *old_model)
1424 {
1425   GtkTreeViewColumnPrivate *priv = column->priv;
1426
1427   if (priv->sort_column_changed_signal)
1428     {
1429       g_signal_handler_disconnect (old_model,
1430                                    priv->sort_column_changed_signal);
1431       priv->sort_column_changed_signal = 0;
1432     }
1433   gtk_tree_view_column_set_sort_indicator (column, FALSE);
1434 }
1435
1436 void
1437 _gtk_tree_view_column_set_tree_view (GtkTreeViewColumn *column,
1438                                      GtkTreeView       *tree_view)
1439 {
1440   GtkTreeViewColumnPrivate *priv = column->priv;
1441
1442   g_assert (priv->tree_view == NULL);
1443
1444   priv->tree_view = GTK_WIDGET (tree_view);
1445   gtk_tree_view_column_create_button (column);
1446
1447   priv->property_changed_signal =
1448     g_signal_connect_swapped (tree_view,
1449                               "notify::model",
1450                               G_CALLBACK (gtk_tree_view_column_setup_sort_column_id_callback),
1451                               column);
1452
1453   gtk_tree_view_column_setup_sort_column_id_callback (column);
1454 }
1455
1456 void
1457 _gtk_tree_view_column_unset_tree_view (GtkTreeViewColumn *column)
1458 {
1459   GtkTreeViewColumnPrivate *priv = column->priv;
1460
1461   if (priv->tree_view && priv->button)
1462     {
1463       gtk_container_remove (GTK_CONTAINER (priv->tree_view), priv->button);
1464     }
1465   if (priv->property_changed_signal)
1466     {
1467       g_signal_handler_disconnect (priv->tree_view, priv->property_changed_signal);
1468       priv->property_changed_signal = 0;
1469     }
1470
1471   if (priv->sort_column_changed_signal)
1472     {
1473       g_signal_handler_disconnect (gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view)),
1474                                    priv->sort_column_changed_signal);
1475       priv->sort_column_changed_signal = 0;
1476     }
1477
1478   priv->tree_view = NULL;
1479   priv->button = NULL;
1480 }
1481
1482 gboolean
1483 _gtk_tree_view_column_has_editable_cell (GtkTreeViewColumn *column)
1484 {
1485   GtkTreeViewColumnPrivate *priv = column->priv;
1486   gboolean ret = FALSE;
1487   GList *list, *cells;
1488
1489   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
1490
1491   for (list = cells; list; list = list->next)
1492     {
1493       GtkCellRenderer *cell = list->data;
1494       GtkCellRendererMode mode;
1495
1496       g_object_get (cell, "mode", &mode, NULL);
1497
1498       if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
1499         {
1500           ret = TRUE;
1501           break;
1502         }
1503     }
1504
1505   g_list_free (cells);
1506
1507   return ret;
1508 }
1509
1510 /* gets cell being edited */
1511 GtkCellRenderer *
1512 _gtk_tree_view_column_get_edited_cell (GtkTreeViewColumn *column)
1513 {
1514   GtkTreeViewColumnPrivate *priv = column->priv;
1515
1516   return gtk_cell_area_get_edited_cell (priv->cell_area);
1517 }
1518
1519 GtkCellRenderer *
1520 _gtk_tree_view_column_get_cell_at_pos (GtkTreeViewColumn *column,
1521                                        GdkRectangle      *cell_area,
1522                                        GdkRectangle      *background_area,
1523                                        gint               x,
1524                                        gint               y)
1525 {
1526   GtkCellRenderer *match = NULL;
1527   GtkTreeViewColumnPrivate *priv = column->priv;
1528
1529   /* If (x, y) is outside of the background area, immediately return */
1530   if (x < background_area->x ||
1531       x > background_area->x + background_area->width ||
1532       y < background_area->y ||
1533       y > background_area->y + background_area->height)
1534     return NULL;
1535
1536   /* If (x, y) is inside the background area, clamp it to the cell_area
1537    * so that a cell is still returned.  The main reason for doing this
1538    * (on the x axis) is for handling clicks in the indentation area
1539    * (either at the left or right depending on RTL setting).  Another
1540    * reason is for handling clicks on the area where the focus rectangle
1541    * is drawn (this is outside of cell area), this manifests itself
1542    * mainly when a large setting is used for focus-line-width.
1543    */
1544   if (x < cell_area->x)
1545     x = cell_area->x;
1546   else if (x > cell_area->x + cell_area->width)
1547     x = cell_area->x + cell_area->width;
1548
1549   if (y < cell_area->y)
1550     y = cell_area->y;
1551   else if (y > cell_area->y + cell_area->height)
1552     y = cell_area->y + cell_area->height;
1553
1554   match = gtk_cell_area_get_cell_at_position (priv->cell_area,
1555                                               priv->cell_area_context,
1556                                               priv->tree_view,
1557                                               cell_area,
1558                                               x, y,
1559                                               NULL);
1560
1561   return match;
1562 }
1563
1564 gboolean
1565 _gtk_tree_view_column_is_blank_at_pos (GtkTreeViewColumn *column,
1566                                        GdkRectangle      *cell_area,
1567                                        GdkRectangle      *background_area,
1568                                        gint               x,
1569                                        gint               y)
1570 {
1571   GtkCellRenderer *match;
1572   GdkRectangle cell_alloc, aligned_area, inner_area;
1573   GtkTreeViewColumnPrivate *priv = column->priv;
1574
1575   match = _gtk_tree_view_column_get_cell_at_pos (column,
1576                                                  cell_area,
1577                                                  background_area,
1578                                                  x, y);
1579   if (!match)
1580     return FALSE;
1581
1582   gtk_cell_area_get_cell_allocation (priv->cell_area,
1583                                      priv->cell_area_context,
1584                                      priv->tree_view,
1585                                      match,
1586                                      cell_area,
1587                                      &cell_alloc);
1588
1589   gtk_cell_area_inner_cell_area (priv->cell_area, priv->tree_view,
1590                                  &cell_alloc, &inner_area);
1591   gtk_cell_renderer_get_aligned_area (match, priv->tree_view, 0,
1592                                       &inner_area, &aligned_area);
1593
1594   if (x < aligned_area.x ||
1595       x > aligned_area.x + aligned_area.width ||
1596       y < aligned_area.y ||
1597       y > aligned_area.y + aligned_area.height)
1598     return TRUE;
1599
1600   return FALSE;
1601 }
1602
1603 /* Public Functions */
1604
1605
1606 /**
1607  * gtk_tree_view_column_new:
1608  *
1609  * Creates a new #GtkTreeViewColumn.
1610  *
1611  * Return value: A newly created #GtkTreeViewColumn.
1612  **/
1613 GtkTreeViewColumn *
1614 gtk_tree_view_column_new (void)
1615 {
1616   GtkTreeViewColumn *tree_column;
1617
1618   tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, NULL);
1619
1620   return tree_column;
1621 }
1622
1623 /**
1624  * gtk_tree_view_column_new_with_area:
1625  * @area: the #GtkCellArea that the newly created column should use to layout cells.
1626  *
1627  * Creates a new #GtkTreeViewColumn using @area to render its cells.
1628  *
1629  * Return value: A newly created #GtkTreeViewColumn.
1630  *
1631  * Since: 3.0
1632  */
1633 GtkTreeViewColumn *
1634 gtk_tree_view_column_new_with_area (GtkCellArea *area)
1635 {
1636   GtkTreeViewColumn *tree_column;
1637
1638   tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, "cell-area", area, NULL);
1639
1640   return tree_column;
1641 }
1642
1643
1644 /**
1645  * gtk_tree_view_column_new_with_attributes:
1646  * @title: The title to set the header to.
1647  * @cell: The #GtkCellRenderer.
1648  * @Varargs: A %NULL-terminated list of attributes.
1649  *
1650  * Creates a new #GtkTreeViewColumn with a number of default values.  This is
1651  * equivalent to calling gtk_tree_view_column_set_title(),
1652  * gtk_tree_view_column_pack_start(), and
1653  * gtk_tree_view_column_set_attributes() on the newly created #GtkTreeViewColumn.
1654  *
1655  * Here's a simple example:
1656  * |[
1657  *  enum { TEXT_COLUMN, COLOR_COLUMN, N_COLUMNS };
1658  *  ...
1659  *  {
1660  *    GtkTreeViewColumn *column;
1661  *    GtkCellRenderer   *renderer = gtk_cell_renderer_text_new ();
1662  *
1663  *    column = gtk_tree_view_column_new_with_attributes ("Title",
1664  *                                                       renderer,
1665  *                                                       "text", TEXT_COLUMN,
1666  *                                                       "foreground", COLOR_COLUMN,
1667  *                                                       NULL);
1668  *  }
1669  * ]|
1670  *
1671  * Return value: A newly created #GtkTreeViewColumn.
1672  **/
1673 GtkTreeViewColumn *
1674 gtk_tree_view_column_new_with_attributes (const gchar     *title,
1675                                           GtkCellRenderer *cell,
1676                                           ...)
1677 {
1678   GtkTreeViewColumn *retval;
1679   va_list args;
1680
1681   retval = gtk_tree_view_column_new ();
1682
1683   gtk_tree_view_column_set_title (retval, title);
1684   gtk_tree_view_column_pack_start (retval, cell, TRUE);
1685
1686   va_start (args, cell);
1687   gtk_tree_view_column_set_attributesv (retval, cell, args);
1688   va_end (args);
1689
1690   return retval;
1691 }
1692
1693 /**
1694  * gtk_tree_view_column_pack_start:
1695  * @tree_column: A #GtkTreeViewColumn.
1696  * @cell: The #GtkCellRenderer.
1697  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1698  *
1699  * Packs the @cell into the beginning of the column. If @expand is %FALSE, then
1700  * the @cell is allocated no more space than it needs. Any unused space is divided
1701  * evenly between cells for which @expand is %TRUE.
1702  **/
1703 void
1704 gtk_tree_view_column_pack_start (GtkTreeViewColumn *tree_column,
1705                                  GtkCellRenderer   *cell,
1706                                  gboolean           expand)
1707 {
1708   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (tree_column), cell, expand);
1709 }
1710
1711 /**
1712  * gtk_tree_view_column_pack_end:
1713  * @tree_column: A #GtkTreeViewColumn.
1714  * @cell: The #GtkCellRenderer.
1715  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1716  *
1717  * Adds the @cell to end of the column. If @expand is %FALSE, then the @cell
1718  * is allocated no more space than it needs. Any unused space is divided
1719  * evenly between cells for which @expand is %TRUE.
1720  **/
1721 void
1722 gtk_tree_view_column_pack_end (GtkTreeViewColumn  *tree_column,
1723                                GtkCellRenderer    *cell,
1724                                gboolean            expand)
1725 {
1726   gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (tree_column), cell, expand);
1727 }
1728
1729 /**
1730  * gtk_tree_view_column_clear:
1731  * @tree_column: A #GtkTreeViewColumn
1732  *
1733  * Unsets all the mappings on all renderers on the @tree_column.
1734  **/
1735 void
1736 gtk_tree_view_column_clear (GtkTreeViewColumn *tree_column)
1737 {
1738   gtk_cell_layout_clear (GTK_CELL_LAYOUT (tree_column));
1739 }
1740
1741 /**
1742  * gtk_tree_view_column_add_attribute:
1743  * @tree_column: A #GtkTreeViewColumn.
1744  * @cell_renderer: the #GtkCellRenderer to set attributes on
1745  * @attribute: An attribute on the renderer
1746  * @column: The column position on the model to get the attribute from.
1747  *
1748  * Adds an attribute mapping to the list in @tree_column.  The @column is the
1749  * column of the model to get a value from, and the @attribute is the
1750  * parameter on @cell_renderer to be set from the value. So for example
1751  * if column 2 of the model contains strings, you could have the
1752  * "text" attribute of a #GtkCellRendererText get its values from
1753  * column 2.
1754  **/
1755 void
1756 gtk_tree_view_column_add_attribute (GtkTreeViewColumn *tree_column,
1757                                     GtkCellRenderer   *cell_renderer,
1758                                     const gchar       *attribute,
1759                                     gint               column)
1760 {
1761   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (tree_column),
1762                                  cell_renderer, attribute, column);
1763 }
1764
1765 static void
1766 gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
1767                                       GtkCellRenderer   *cell_renderer,
1768                                       va_list            args)
1769 {
1770   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1771   gchar *attribute;
1772   gint column;
1773
1774   attribute = va_arg (args, gchar *);
1775
1776   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (priv->cell_area),
1777                                     cell_renderer);
1778
1779   while (attribute != NULL)
1780     {
1781       column = va_arg (args, gint);
1782       gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (priv->cell_area),
1783                                      cell_renderer, attribute, column);
1784       attribute = va_arg (args, gchar *);
1785     }
1786 }
1787
1788 /**
1789  * gtk_tree_view_column_set_attributes:
1790  * @tree_column: A #GtkTreeViewColumn.
1791  * @cell_renderer: the #GtkCellRenderer we're setting the attributes of
1792  * @Varargs: A %NULL-terminated list of attributes.
1793  *
1794  * Sets the attributes in the list as the attributes of @tree_column.
1795  * The attributes should be in attribute/column order, as in
1796  * gtk_tree_view_column_add_attribute(). All existing attributes
1797  * are removed, and replaced with the new attributes.
1798  **/
1799 void
1800 gtk_tree_view_column_set_attributes (GtkTreeViewColumn *tree_column,
1801                                      GtkCellRenderer   *cell_renderer,
1802                                      ...)
1803 {
1804   va_list args;
1805
1806   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1807   g_return_if_fail (GTK_IS_CELL_RENDERER (cell_renderer));
1808
1809   va_start (args, cell_renderer);
1810   gtk_tree_view_column_set_attributesv (tree_column, cell_renderer, args);
1811   va_end (args);
1812 }
1813
1814
1815 /**
1816  * gtk_tree_view_column_set_cell_data_func:
1817  * @tree_column: A #GtkTreeViewColumn
1818  * @cell_renderer: A #GtkCellRenderer
1819  * @func: (allow-none): The #GtkTreeViewColumnFunc to use.
1820  * @func_data: The user data for @func.
1821  * @destroy: The destroy notification for @func_data
1822  *
1823  * Sets the #GtkTreeViewColumnFunc to use for the column.  This
1824  * function is used instead of the standard attributes mapping for
1825  * setting the column value, and should set the value of @tree_column's
1826  * cell renderer as appropriate.  @func may be %NULL to remove an
1827  * older one.
1828  **/
1829 void
1830 gtk_tree_view_column_set_cell_data_func (GtkTreeViewColumn   *tree_column,
1831                                          GtkCellRenderer     *cell_renderer,
1832                                          GtkTreeCellDataFunc  func,
1833                                          gpointer             func_data,
1834                                          GDestroyNotify       destroy)
1835 {
1836   gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (tree_column),
1837                                       cell_renderer,
1838                                       (GtkCellLayoutDataFunc)func,
1839                                       func_data, destroy);
1840 }
1841
1842
1843 /**
1844  * gtk_tree_view_column_clear_attributes:
1845  * @tree_column: a #GtkTreeViewColumn
1846  * @cell_renderer: a #GtkCellRenderer to clear the attribute mapping on.
1847  *
1848  * Clears all existing attributes previously set with
1849  * gtk_tree_view_column_set_attributes().
1850  **/
1851 void
1852 gtk_tree_view_column_clear_attributes (GtkTreeViewColumn *tree_column,
1853                                        GtkCellRenderer   *cell_renderer)
1854 {
1855   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (tree_column),
1856                                     cell_renderer);
1857 }
1858
1859 /**
1860  * gtk_tree_view_column_set_spacing:
1861  * @tree_column: A #GtkTreeViewColumn.
1862  * @spacing: distance between cell renderers in pixels.
1863  *
1864  * Sets the spacing field of @tree_column, which is the number of pixels to
1865  * place between cell renderers packed into it.
1866  **/
1867 void
1868 gtk_tree_view_column_set_spacing (GtkTreeViewColumn *tree_column,
1869                                   gint               spacing)
1870 {
1871   GtkTreeViewColumnPrivate *priv;
1872
1873   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1874   g_return_if_fail (spacing >= 0);
1875
1876   priv = tree_column->priv;
1877
1878   gtk_cell_area_box_set_spacing (GTK_CELL_AREA_BOX (priv->cell_area),
1879                                  spacing);
1880   if (priv->tree_view)
1881     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1882 }
1883
1884 /**
1885  * gtk_tree_view_column_get_spacing:
1886  * @tree_column: A #GtkTreeViewColumn.
1887  *
1888  * Returns the spacing of @tree_column.
1889  *
1890  * Return value: the spacing of @tree_column.
1891  **/
1892 gint
1893 gtk_tree_view_column_get_spacing (GtkTreeViewColumn *tree_column)
1894 {
1895   GtkTreeViewColumnPrivate *priv;
1896
1897   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1898
1899   priv = tree_column->priv;
1900
1901   return gtk_cell_area_box_get_spacing (GTK_CELL_AREA_BOX (priv->cell_area));
1902 }
1903
1904 /* Options for manipulating the columns */
1905
1906 /**
1907  * gtk_tree_view_column_set_visible:
1908  * @tree_column: A #GtkTreeViewColumn.
1909  * @visible: %TRUE if the @tree_column is visible.
1910  *
1911  * Sets the visibility of @tree_column.
1912  */
1913 void
1914 gtk_tree_view_column_set_visible (GtkTreeViewColumn *tree_column,
1915                                   gboolean           visible)
1916 {
1917   GtkTreeViewColumnPrivate *priv;
1918
1919   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1920
1921   priv    = tree_column->priv;
1922   visible = !! visible;
1923
1924   if (priv->visible == visible)
1925     return;
1926
1927   priv->visible = visible;
1928
1929   if (priv->visible)
1930     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1931
1932   if (priv->tree_view)
1933     _gtk_tree_view_reset_header_styles (GTK_TREE_VIEW (priv->tree_view));
1934
1935   gtk_tree_view_column_update_button (tree_column);
1936   g_object_notify (G_OBJECT (tree_column), "visible");
1937 }
1938
1939 /**
1940  * gtk_tree_view_column_get_visible:
1941  * @tree_column: A #GtkTreeViewColumn.
1942  *
1943  * Returns %TRUE if @tree_column is visible.
1944  *
1945  * Return value: whether the column is visible or not.  If it is visible, then
1946  * the tree will show the column.
1947  **/
1948 gboolean
1949 gtk_tree_view_column_get_visible (GtkTreeViewColumn *tree_column)
1950 {
1951   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
1952
1953   return tree_column->priv->visible;
1954 }
1955
1956 /**
1957  * gtk_tree_view_column_set_resizable:
1958  * @tree_column: A #GtkTreeViewColumn
1959  * @resizable: %TRUE, if the column can be resized
1960  *
1961  * If @resizable is %TRUE, then the user can explicitly resize the column by
1962  * grabbing the outer edge of the column button.  If resizable is %TRUE and
1963  * sizing mode of the column is #GTK_TREE_VIEW_COLUMN_AUTOSIZE, then the sizing
1964  * mode is changed to #GTK_TREE_VIEW_COLUMN_GROW_ONLY.
1965  **/
1966 void
1967 gtk_tree_view_column_set_resizable (GtkTreeViewColumn *tree_column,
1968                                     gboolean           resizable)
1969 {
1970   GtkTreeViewColumnPrivate *priv;
1971
1972   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1973
1974   priv      = tree_column->priv;
1975   resizable = !! resizable;
1976
1977   if (priv->resizable == resizable)
1978     return;
1979
1980   priv->resizable = resizable;
1981
1982   if (resizable && priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1983     gtk_tree_view_column_set_sizing (tree_column, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
1984
1985   gtk_tree_view_column_update_button (tree_column);
1986
1987   g_object_notify (G_OBJECT (tree_column), "resizable");
1988 }
1989
1990 /**
1991  * gtk_tree_view_column_get_resizable:
1992  * @tree_column: A #GtkTreeViewColumn
1993  *
1994  * Returns %TRUE if the @tree_column can be resized by the end user.
1995  *
1996  * Return value: %TRUE, if the @tree_column can be resized.
1997  **/
1998 gboolean
1999 gtk_tree_view_column_get_resizable (GtkTreeViewColumn *tree_column)
2000 {
2001   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2002
2003   return tree_column->priv->resizable;
2004 }
2005
2006
2007 /**
2008  * gtk_tree_view_column_set_sizing:
2009  * @tree_column: A #GtkTreeViewColumn.
2010  * @type: The #GtkTreeViewColumnSizing.
2011  *
2012  * Sets the growth behavior of @tree_column to @type.
2013  **/
2014 void
2015 gtk_tree_view_column_set_sizing (GtkTreeViewColumn       *tree_column,
2016                                  GtkTreeViewColumnSizing  type)
2017 {
2018   GtkTreeViewColumnPrivate *priv;
2019
2020   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2021
2022   priv      = tree_column->priv;
2023
2024   if (type == priv->column_type)
2025     return;
2026
2027   if (type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2028     gtk_tree_view_column_set_resizable (tree_column, FALSE);
2029
2030   priv->column_type = type;
2031
2032   gtk_tree_view_column_update_button (tree_column);
2033
2034   g_object_notify (G_OBJECT (tree_column), "sizing");
2035 }
2036
2037 /**
2038  * gtk_tree_view_column_get_sizing:
2039  * @tree_column: A #GtkTreeViewColumn.
2040  *
2041  * Returns the current type of @tree_column.
2042  *
2043  * Return value: The type of @tree_column.
2044  **/
2045 GtkTreeViewColumnSizing
2046 gtk_tree_view_column_get_sizing (GtkTreeViewColumn *tree_column)
2047 {
2048   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2049
2050   return tree_column->priv->column_type;
2051 }
2052
2053 /**
2054  * gtk_tree_view_column_get_width:
2055  * @tree_column: A #GtkTreeViewColumn.
2056  *
2057  * Returns the current size of @tree_column in pixels.
2058  *
2059  * Return value: The current width of @tree_column.
2060  **/
2061 gint
2062 gtk_tree_view_column_get_width (GtkTreeViewColumn *tree_column)
2063 {
2064   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2065
2066   return tree_column->priv->width;
2067 }
2068
2069 /**
2070  * gtk_tree_view_column_get_x_offset:
2071  * @tree_column: A #GtkTreeViewColumn.
2072  *
2073  * Returns the current X offset of @tree_column in pixels.
2074  *
2075  * Return value: The current X offset of @tree_column.
2076  *
2077  * Since: 3.2
2078  */
2079 gint
2080 gtk_tree_view_column_get_x_offset (GtkTreeViewColumn *tree_column)
2081 {
2082   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2083
2084   return tree_column->priv->x_offset;
2085 }
2086
2087 gint
2088 _gtk_tree_view_column_request_width (GtkTreeViewColumn *tree_column)
2089 {
2090   GtkTreeViewColumnPrivate *priv;
2091   gint real_requested_width;
2092
2093   priv = tree_column->priv;
2094
2095   if (priv->use_resized_width)
2096     {
2097       real_requested_width = priv->resized_width;
2098     }
2099   else if (priv->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2100     {
2101       real_requested_width = priv->fixed_width;
2102     }
2103   else if (gtk_tree_view_get_headers_visible (GTK_TREE_VIEW (priv->tree_view)))
2104     {
2105       gint button_request;
2106       gint requested_width;
2107
2108       gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &requested_width, NULL);
2109       requested_width += priv->padding;
2110
2111       gtk_widget_get_preferred_width (priv->button, &button_request, NULL);
2112       real_requested_width = MAX (requested_width, button_request);
2113     }
2114   else
2115     {
2116       gint requested_width;
2117
2118       gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &requested_width, NULL);
2119       requested_width += priv->padding;
2120
2121       real_requested_width = requested_width;
2122       if (real_requested_width < 0)
2123         real_requested_width = 0;
2124     }
2125
2126   if (priv->min_width != -1)
2127     real_requested_width = MAX (real_requested_width, priv->min_width);
2128
2129   if (priv->max_width != -1)
2130     real_requested_width = MIN (real_requested_width, priv->max_width);
2131
2132   return real_requested_width;
2133 }
2134
2135 void
2136 _gtk_tree_view_column_allocate (GtkTreeViewColumn *tree_column,
2137                                 int                x_offset,
2138                                 int                width)
2139 {
2140   GtkTreeViewColumnPrivate *priv;
2141   GtkAllocation             allocation;
2142   gboolean                  rtl;
2143
2144   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2145
2146   priv = tree_column->priv;
2147
2148   if (priv->width != width)
2149     gtk_widget_queue_draw (priv->tree_view);
2150
2151   priv->x_offset = x_offset;
2152   priv->width = width;
2153
2154   gtk_cell_area_context_allocate (priv->cell_area_context, priv->width - priv->padding, -1);
2155
2156   if (gtk_tree_view_get_headers_visible (GTK_TREE_VIEW (priv->tree_view)))
2157     {
2158       allocation.x      = x_offset;
2159       allocation.y      = 0;
2160       allocation.width  = width;
2161       allocation.height = _gtk_tree_view_get_header_height (GTK_TREE_VIEW (priv->tree_view));
2162
2163       gtk_widget_size_allocate (priv->button, &allocation);
2164     }
2165
2166   if (priv->window)
2167     {
2168       rtl = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
2169       gdk_window_move_resize (priv->window,
2170                               allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2171                               allocation.y,
2172                               TREE_VIEW_DRAG_WIDTH, allocation.height);
2173     }
2174
2175   g_object_notify (G_OBJECT (tree_column), "x-offset");
2176   g_object_notify (G_OBJECT (tree_column), "width");
2177 }
2178
2179 /**
2180  * gtk_tree_view_column_set_fixed_width:
2181  * @tree_column: A #GtkTreeViewColumn.
2182  * @fixed_width: The size to set @tree_column to. Must be greater than 0.
2183  *
2184  * Sets the size of the column in pixels.  This is meaningful only if the sizing
2185  * type is #GTK_TREE_VIEW_COLUMN_FIXED.  The size of the column is clamped to
2186  * the min/max width for the column.  Please note that the min/max width of the
2187  * column doesn't actually affect the "fixed_width" property of the widget, just
2188  * the actual size when displayed.
2189  **/
2190 void
2191 gtk_tree_view_column_set_fixed_width (GtkTreeViewColumn *tree_column,
2192                                       gint               fixed_width)
2193 {
2194   GtkTreeViewColumnPrivate *priv;
2195
2196   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2197   g_return_if_fail (fixed_width > 0);
2198
2199   priv = tree_column->priv;
2200
2201   priv->fixed_width = fixed_width;
2202   priv->use_resized_width = FALSE;
2203
2204   if (priv->tree_view &&
2205       gtk_widget_get_realized (priv->tree_view) &&
2206       priv->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2207     {
2208       gtk_widget_queue_resize (priv->tree_view);
2209     }
2210
2211   g_object_notify (G_OBJECT (tree_column), "fixed-width");
2212 }
2213
2214 /**
2215  * gtk_tree_view_column_get_fixed_width:
2216  * @tree_column: a #GtkTreeViewColumn
2217  *
2218  * Gets the fixed width of the column.  This value is only meaning may not be
2219  * the actual width of the column on the screen, just what is requested.
2220  *
2221  * Return value: the fixed width of the column
2222  **/
2223 gint
2224 gtk_tree_view_column_get_fixed_width (GtkTreeViewColumn *tree_column)
2225 {
2226   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2227
2228   return tree_column->priv->fixed_width;
2229 }
2230
2231 /**
2232  * gtk_tree_view_column_set_min_width:
2233  * @tree_column: A #GtkTreeViewColumn.
2234  * @min_width: The minimum width of the column in pixels, or -1.
2235  *
2236  * Sets the minimum width of the @tree_column.  If @min_width is -1, then the
2237  * minimum width is unset.
2238  **/
2239 void
2240 gtk_tree_view_column_set_min_width (GtkTreeViewColumn *tree_column,
2241                                     gint               min_width)
2242 {
2243   GtkTreeViewColumnPrivate *priv;
2244
2245   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2246   g_return_if_fail (min_width >= -1);
2247
2248   priv = tree_column->priv;
2249
2250   if (min_width == priv->min_width)
2251     return;
2252
2253   if (priv->visible &&
2254       priv->tree_view != NULL &&
2255       gtk_widget_get_realized (priv->tree_view))
2256     {
2257       if (min_width > priv->width)
2258         gtk_widget_queue_resize (priv->tree_view);
2259     }
2260
2261   priv->min_width = min_width;
2262   g_object_freeze_notify (G_OBJECT (tree_column));
2263   if (priv->max_width != -1 && priv->max_width < min_width)
2264     {
2265       priv->max_width = min_width;
2266       g_object_notify (G_OBJECT (tree_column), "max-width");
2267     }
2268   g_object_notify (G_OBJECT (tree_column), "min-width");
2269   g_object_thaw_notify (G_OBJECT (tree_column));
2270
2271   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2272     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
2273                                     tree_column);
2274 }
2275
2276 /**
2277  * gtk_tree_view_column_get_min_width:
2278  * @tree_column: A #GtkTreeViewColumn.
2279  *
2280  * Returns the minimum width in pixels of the @tree_column, or -1 if no minimum
2281  * width is set.
2282  *
2283  * Return value: The minimum width of the @tree_column.
2284  **/
2285 gint
2286 gtk_tree_view_column_get_min_width (GtkTreeViewColumn *tree_column)
2287 {
2288   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
2289
2290   return tree_column->priv->min_width;
2291 }
2292
2293 /**
2294  * gtk_tree_view_column_set_max_width:
2295  * @tree_column: A #GtkTreeViewColumn.
2296  * @max_width: The maximum width of the column in pixels, or -1.
2297  *
2298  * Sets the maximum width of the @tree_column.  If @max_width is -1, then the
2299  * maximum width is unset.  Note, the column can actually be wider than max
2300  * width if it's the last column in a view.  In this case, the column expands to
2301  * fill any extra space.
2302  **/
2303 void
2304 gtk_tree_view_column_set_max_width (GtkTreeViewColumn *tree_column,
2305                                     gint               max_width)
2306 {
2307   GtkTreeViewColumnPrivate *priv;
2308
2309   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2310   g_return_if_fail (max_width >= -1);
2311
2312   priv = tree_column->priv;
2313
2314   if (max_width == priv->max_width)
2315     return;
2316
2317   if (priv->visible &&
2318       priv->tree_view != NULL &&
2319       gtk_widget_get_realized (priv->tree_view))
2320     {
2321       if (max_width != -1 && max_width < priv->width)
2322         gtk_widget_queue_resize (priv->tree_view);
2323     }
2324
2325   priv->max_width = max_width;
2326   g_object_freeze_notify (G_OBJECT (tree_column));
2327   if (max_width != -1 && max_width < priv->min_width)
2328     {
2329       priv->min_width = max_width;
2330       g_object_notify (G_OBJECT (tree_column), "min-width");
2331     }
2332   g_object_notify (G_OBJECT (tree_column), "max-width");
2333   g_object_thaw_notify (G_OBJECT (tree_column));
2334
2335   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2336     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
2337                                     tree_column);
2338 }
2339
2340 /**
2341  * gtk_tree_view_column_get_max_width:
2342  * @tree_column: A #GtkTreeViewColumn.
2343  *
2344  * Returns the maximum width in pixels of the @tree_column, or -1 if no maximum
2345  * width is set.
2346  *
2347  * Return value: The maximum width of the @tree_column.
2348  **/
2349 gint
2350 gtk_tree_view_column_get_max_width (GtkTreeViewColumn *tree_column)
2351 {
2352   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
2353
2354   return tree_column->priv->max_width;
2355 }
2356
2357 /**
2358  * gtk_tree_view_column_clicked:
2359  * @tree_column: a #GtkTreeViewColumn
2360  *
2361  * Emits the "clicked" signal on the column.  This function will only work if
2362  * @tree_column is clickable.
2363  **/
2364 void
2365 gtk_tree_view_column_clicked (GtkTreeViewColumn *tree_column)
2366 {
2367   GtkTreeViewColumnPrivate *priv;
2368
2369   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2370
2371   priv = tree_column->priv;
2372
2373   if (priv->visible &&
2374       priv->button &&
2375       priv->clickable)
2376     gtk_button_clicked (GTK_BUTTON (priv->button));
2377 }
2378
2379 /**
2380  * gtk_tree_view_column_set_title:
2381  * @tree_column: A #GtkTreeViewColumn.
2382  * @title: The title of the @tree_column.
2383  *
2384  * Sets the title of the @tree_column.  If a custom widget has been set, then
2385  * this value is ignored.
2386  **/
2387 void
2388 gtk_tree_view_column_set_title (GtkTreeViewColumn *tree_column,
2389                                 const gchar       *title)
2390 {
2391   GtkTreeViewColumnPrivate *priv;
2392   gchar                    *new_title;
2393
2394   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2395
2396   priv = tree_column->priv;
2397
2398   new_title = g_strdup (title);
2399   g_free (priv->title);
2400   priv->title = new_title;
2401
2402   gtk_tree_view_column_update_button (tree_column);
2403   g_object_notify (G_OBJECT (tree_column), "title");
2404 }
2405
2406 /**
2407  * gtk_tree_view_column_get_title:
2408  * @tree_column: A #GtkTreeViewColumn.
2409  *
2410  * Returns the title of the widget.
2411  *
2412  * Return value: the title of the column. This string should not be
2413  * modified or freed.
2414  **/
2415 G_CONST_RETURN gchar *
2416 gtk_tree_view_column_get_title (GtkTreeViewColumn *tree_column)
2417 {
2418   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2419
2420   return tree_column->priv->title;
2421 }
2422
2423 /**
2424  * gtk_tree_view_column_set_expand:
2425  * @tree_column: A #GtkTreeViewColumn
2426  * @expand: %TRUE if the column should take available extra space, %FALSE if not
2427  *
2428  * Sets the column to take available extra space.  This space is shared equally
2429  * amongst all columns that have the expand set to %TRUE.  If no column has this
2430  * option set, then the last column gets all extra space.  By default, every
2431  * column is created with this %FALSE.
2432  *
2433  * Since: 2.4
2434  **/
2435 void
2436 gtk_tree_view_column_set_expand (GtkTreeViewColumn *tree_column,
2437                                  gboolean           expand)
2438 {
2439   GtkTreeViewColumnPrivate *priv;
2440
2441   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2442
2443   priv = tree_column->priv;
2444
2445   expand = expand?TRUE:FALSE;
2446   if (priv->expand == expand)
2447     return;
2448   priv->expand = expand;
2449
2450   if (priv->visible &&
2451       priv->tree_view != NULL &&
2452       gtk_widget_get_realized (priv->tree_view))
2453     {
2454       /* We want to continue using the original width of the
2455        * column that includes additional space added by the user
2456        * resizing the columns and possibly extra (expanded) space, which
2457        * are not included in the resized width.
2458        */
2459       priv->use_resized_width = FALSE;
2460
2461       gtk_widget_queue_resize (priv->tree_view);
2462     }
2463
2464   g_object_notify (G_OBJECT (tree_column), "expand");
2465 }
2466
2467 /**
2468  * gtk_tree_view_column_get_expand:
2469  * @tree_column: a #GtkTreeViewColumn
2470  *
2471  * Return %TRUE if the column expands to take any available space.
2472  *
2473  * Return value: %TRUE, if the column expands
2474  *
2475  * Since: 2.4
2476  **/
2477 gboolean
2478 gtk_tree_view_column_get_expand (GtkTreeViewColumn *tree_column)
2479 {
2480   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2481
2482   return tree_column->priv->expand;
2483 }
2484
2485 /**
2486  * gtk_tree_view_column_set_clickable:
2487  * @tree_column: A #GtkTreeViewColumn.
2488  * @clickable: %TRUE if the header is active.
2489  *
2490  * Sets the header to be active if @active is %TRUE.  When the header is active,
2491  * then it can take keyboard focus, and can be clicked.
2492  **/
2493 void
2494 gtk_tree_view_column_set_clickable (GtkTreeViewColumn *tree_column,
2495                                     gboolean           clickable)
2496 {
2497   GtkTreeViewColumnPrivate *priv;
2498
2499   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2500
2501   priv = tree_column->priv;
2502
2503   clickable = !! clickable;
2504   if (priv->clickable == clickable)
2505     return;
2506
2507   priv->clickable = clickable;
2508   gtk_tree_view_column_update_button (tree_column);
2509   g_object_notify (G_OBJECT (tree_column), "clickable");
2510 }
2511
2512 /**
2513  * gtk_tree_view_column_get_clickable:
2514  * @tree_column: a #GtkTreeViewColumn
2515  *
2516  * Returns %TRUE if the user can click on the header for the column.
2517  *
2518  * Return value: %TRUE if user can click the column header.
2519  **/
2520 gboolean
2521 gtk_tree_view_column_get_clickable (GtkTreeViewColumn *tree_column)
2522 {
2523   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2524
2525   return tree_column->priv->clickable;
2526 }
2527
2528 /**
2529  * gtk_tree_view_column_set_widget:
2530  * @tree_column: A #GtkTreeViewColumn.
2531  * @widget: (allow-none): A child #GtkWidget, or %NULL.
2532  *
2533  * Sets the widget in the header to be @widget.  If widget is %NULL, then the
2534  * header button is set with a #GtkLabel set to the title of @tree_column.
2535  **/
2536 void
2537 gtk_tree_view_column_set_widget (GtkTreeViewColumn *tree_column,
2538                                  GtkWidget         *widget)
2539 {
2540   GtkTreeViewColumnPrivate *priv;
2541
2542   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2543   g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
2544
2545   priv = tree_column->priv;
2546
2547   if (widget)
2548     g_object_ref_sink (widget);
2549
2550   if (priv->child)
2551     g_object_unref (priv->child);
2552
2553   priv->child = widget;
2554   gtk_tree_view_column_update_button (tree_column);
2555   g_object_notify (G_OBJECT (tree_column), "widget");
2556 }
2557
2558 /**
2559  * gtk_tree_view_column_get_widget:
2560  * @tree_column: A #GtkTreeViewColumn.
2561  *
2562  * Returns the #GtkWidget in the button on the column header.
2563  * If a custom widget has not been set then %NULL is returned.
2564  *
2565  * Return value: (transfer none): The #GtkWidget in the column
2566  *     header, or %NULL
2567  **/
2568 GtkWidget *
2569 gtk_tree_view_column_get_widget (GtkTreeViewColumn *tree_column)
2570 {
2571   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2572
2573   return tree_column->priv->child;
2574 }
2575
2576 /**
2577  * gtk_tree_view_column_set_alignment:
2578  * @tree_column: A #GtkTreeViewColumn.
2579  * @xalign: The alignment, which is between [0.0 and 1.0] inclusive.
2580  *
2581  * Sets the alignment of the title or custom widget inside the column header.
2582  * The alignment determines its location inside the button -- 0.0 for left, 0.5
2583  * for center, 1.0 for right.
2584  **/
2585 void
2586 gtk_tree_view_column_set_alignment (GtkTreeViewColumn *tree_column,
2587                                     gfloat             xalign)
2588 {
2589   GtkTreeViewColumnPrivate *priv;
2590
2591   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2592
2593   priv = tree_column->priv;
2594
2595   xalign = CLAMP (xalign, 0.0, 1.0);
2596
2597   if (priv->xalign == xalign)
2598     return;
2599
2600   priv->xalign = xalign;
2601   gtk_tree_view_column_update_button (tree_column);
2602   g_object_notify (G_OBJECT (tree_column), "alignment");
2603 }
2604
2605 /**
2606  * gtk_tree_view_column_get_alignment:
2607  * @tree_column: A #GtkTreeViewColumn.
2608  *
2609  * Returns the current x alignment of @tree_column.  This value can range
2610  * between 0.0 and 1.0.
2611  *
2612  * Return value: The current alignent of @tree_column.
2613  **/
2614 gfloat
2615 gtk_tree_view_column_get_alignment (GtkTreeViewColumn *tree_column)
2616 {
2617   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0.5);
2618
2619   return tree_column->priv->xalign;
2620 }
2621
2622 /**
2623  * gtk_tree_view_column_set_reorderable:
2624  * @tree_column: A #GtkTreeViewColumn
2625  * @reorderable: %TRUE, if the column can be reordered.
2626  *
2627  * If @reorderable is %TRUE, then the column can be reordered by the end user
2628  * dragging the header.
2629  **/
2630 void
2631 gtk_tree_view_column_set_reorderable (GtkTreeViewColumn *tree_column,
2632                                       gboolean           reorderable)
2633 {
2634   GtkTreeViewColumnPrivate *priv;
2635
2636   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2637
2638   priv = tree_column->priv;
2639
2640   /*  if (reorderable)
2641       gtk_tree_view_column_set_clickable (tree_column, TRUE);*/
2642
2643   if (priv->reorderable == (reorderable?TRUE:FALSE))
2644     return;
2645
2646   priv->reorderable = (reorderable?TRUE:FALSE);
2647   gtk_tree_view_column_update_button (tree_column);
2648   g_object_notify (G_OBJECT (tree_column), "reorderable");
2649 }
2650
2651 /**
2652  * gtk_tree_view_column_get_reorderable:
2653  * @tree_column: A #GtkTreeViewColumn
2654  *
2655  * Returns %TRUE if the @tree_column can be reordered by the user.
2656  *
2657  * Return value: %TRUE if the @tree_column can be reordered by the user.
2658  **/
2659 gboolean
2660 gtk_tree_view_column_get_reorderable (GtkTreeViewColumn *tree_column)
2661 {
2662   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2663
2664   return tree_column->priv->reorderable;
2665 }
2666
2667
2668 /**
2669  * gtk_tree_view_column_set_sort_column_id:
2670  * @tree_column: a #GtkTreeViewColumn
2671  * @sort_column_id: The @sort_column_id of the model to sort on.
2672  *
2673  * Sets the logical @sort_column_id that this column sorts on when this column
2674  * is selected for sorting.  Doing so makes the column header clickable.
2675  **/
2676 void
2677 gtk_tree_view_column_set_sort_column_id (GtkTreeViewColumn *tree_column,
2678                                          gint               sort_column_id)
2679 {
2680   GtkTreeViewColumnPrivate *priv;
2681
2682   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2683   g_return_if_fail (sort_column_id >= -1);
2684
2685   priv = tree_column->priv;
2686
2687   if (priv->sort_column_id == sort_column_id)
2688     return;
2689
2690   priv->sort_column_id = sort_column_id;
2691
2692   /* Handle unsetting the id */
2693   if (sort_column_id == -1)
2694     {
2695       GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
2696
2697       if (priv->sort_clicked_signal)
2698         {
2699           g_signal_handler_disconnect (tree_column, priv->sort_clicked_signal);
2700           priv->sort_clicked_signal = 0;
2701         }
2702
2703       if (priv->sort_column_changed_signal)
2704         {
2705           g_signal_handler_disconnect (model, priv->sort_column_changed_signal);
2706           priv->sort_column_changed_signal = 0;
2707         }
2708
2709       gtk_tree_view_column_set_sort_order (tree_column, GTK_SORT_ASCENDING);
2710       gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
2711       gtk_tree_view_column_set_clickable (tree_column, FALSE);
2712       g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2713       return;
2714     }
2715
2716   gtk_tree_view_column_set_clickable (tree_column, TRUE);
2717
2718   if (! priv->sort_clicked_signal)
2719     priv->sort_clicked_signal = g_signal_connect (tree_column,
2720                                                   "clicked",
2721                                                   G_CALLBACK (gtk_tree_view_column_sort),
2722                                                   NULL);
2723
2724   gtk_tree_view_column_setup_sort_column_id_callback (tree_column);
2725   g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2726 }
2727
2728 /**
2729  * gtk_tree_view_column_get_sort_column_id:
2730  * @tree_column: a #GtkTreeViewColumn
2731  *
2732  * Gets the logical @sort_column_id that the model sorts on when this
2733  * column is selected for sorting.
2734  * See gtk_tree_view_column_set_sort_column_id().
2735  *
2736  * Return value: the current @sort_column_id for this column, or -1 if
2737  *               this column can't be used for sorting.
2738  **/
2739 gint
2740 gtk_tree_view_column_get_sort_column_id (GtkTreeViewColumn *tree_column)
2741 {
2742   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2743
2744   return tree_column->priv->sort_column_id;
2745 }
2746
2747 /**
2748  * gtk_tree_view_column_set_sort_indicator:
2749  * @tree_column: a #GtkTreeViewColumn
2750  * @setting: %TRUE to display an indicator that the column is sorted
2751  *
2752  * Call this function with a @setting of %TRUE to display an arrow in
2753  * the header button indicating the column is sorted. Call
2754  * gtk_tree_view_column_set_sort_order() to change the direction of
2755  * the arrow.
2756  *
2757  **/
2758 void
2759 gtk_tree_view_column_set_sort_indicator (GtkTreeViewColumn     *tree_column,
2760                                          gboolean               setting)
2761 {
2762   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2763
2764   setting = setting != FALSE;
2765
2766   if (setting == tree_column->priv->show_sort_indicator)
2767     return;
2768
2769   tree_column->priv->show_sort_indicator = setting;
2770   gtk_tree_view_column_update_button (tree_column);
2771   g_object_notify (G_OBJECT (tree_column), "sort-indicator");
2772 }
2773
2774 /**
2775  * gtk_tree_view_column_get_sort_indicator:
2776  * @tree_column: a #GtkTreeViewColumn
2777  *
2778  * Gets the value set by gtk_tree_view_column_set_sort_indicator().
2779  *
2780  * Return value: whether the sort indicator arrow is displayed
2781  **/
2782 gboolean
2783 gtk_tree_view_column_get_sort_indicator  (GtkTreeViewColumn     *tree_column)
2784 {
2785   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2786
2787   return tree_column->priv->show_sort_indicator;
2788 }
2789
2790 /**
2791  * gtk_tree_view_column_set_sort_order:
2792  * @tree_column: a #GtkTreeViewColumn
2793  * @order: sort order that the sort indicator should indicate
2794  *
2795  * Changes the appearance of the sort indicator.
2796  *
2797  * This <emphasis>does not</emphasis> actually sort the model.  Use
2798  * gtk_tree_view_column_set_sort_column_id() if you want automatic sorting
2799  * support.  This function is primarily for custom sorting behavior, and should
2800  * be used in conjunction with gtk_tree_sortable_set_sort_column() to do
2801  * that. For custom models, the mechanism will vary.
2802  *
2803  * The sort indicator changes direction to indicate normal sort or reverse sort.
2804  * Note that you must have the sort indicator enabled to see anything when
2805  * calling this function; see gtk_tree_view_column_set_sort_indicator().
2806  **/
2807 void
2808 gtk_tree_view_column_set_sort_order      (GtkTreeViewColumn     *tree_column,
2809                                           GtkSortType            order)
2810 {
2811   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2812
2813   if (order == tree_column->priv->sort_order)
2814     return;
2815
2816   tree_column->priv->sort_order = order;
2817   gtk_tree_view_column_update_button (tree_column);
2818   g_object_notify (G_OBJECT (tree_column), "sort-order");
2819 }
2820
2821 /**
2822  * gtk_tree_view_column_get_sort_order:
2823  * @tree_column: a #GtkTreeViewColumn
2824  *
2825  * Gets the value set by gtk_tree_view_column_set_sort_order().
2826  *
2827  * Return value: the sort order the sort indicator is indicating
2828  **/
2829 GtkSortType
2830 gtk_tree_view_column_get_sort_order      (GtkTreeViewColumn     *tree_column)
2831 {
2832   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2833
2834   return tree_column->priv->sort_order;
2835 }
2836
2837 /**
2838  * gtk_tree_view_column_cell_set_cell_data:
2839  * @tree_column: A #GtkTreeViewColumn.
2840  * @tree_model: The #GtkTreeModel to to get the cell renderers attributes from.
2841  * @iter: The #GtkTreeIter to to get the cell renderer's attributes from.
2842  * @is_expander: %TRUE, if the row has children
2843  * @is_expanded: %TRUE, if the row has visible children
2844  *
2845  * Sets the cell renderer based on the @tree_model and @iter.  That is, for
2846  * every attribute mapping in @tree_column, it will get a value from the set
2847  * column on the @iter, and use that value to set the attribute on the cell
2848  * renderer.  This is used primarily by the #GtkTreeView.
2849  **/
2850 void
2851 gtk_tree_view_column_cell_set_cell_data (GtkTreeViewColumn *tree_column,
2852                                          GtkTreeModel      *tree_model,
2853                                          GtkTreeIter       *iter,
2854                                          gboolean           is_expander,
2855                                          gboolean           is_expanded)
2856 {
2857   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2858
2859   if (tree_model == NULL)
2860     return;
2861
2862   gtk_cell_area_apply_attributes (tree_column->priv->cell_area, tree_model, iter,
2863                                   is_expander, is_expanded);
2864 }
2865
2866 /**
2867  * gtk_tree_view_column_cell_get_size:
2868  * @tree_column: A #GtkTreeViewColumn.
2869  * @cell_area: (allow-none): The area a cell in the column will be allocated, or %NULL
2870  * @x_offset: (out) (allow-none): location to return x offset of a cell relative to @cell_area, or %NULL
2871  * @y_offset: (out) (allow-none): location to return y offset of a cell relative to @cell_area, or %NULL
2872  * @width: (out) (allow-none): location to return width needed to render a cell, or %NULL
2873  * @height: (out) (allow-none): location to return height needed to render a cell, or %NULL
2874  *
2875  * Obtains the width and height needed to render the column.  This is used
2876  * primarily by the #GtkTreeView.
2877  **/
2878 void
2879 gtk_tree_view_column_cell_get_size (GtkTreeViewColumn  *tree_column,
2880                                     const GdkRectangle *cell_area,
2881                                     gint               *x_offset,
2882                                     gint               *y_offset,
2883                                     gint               *width,
2884                                     gint               *height)
2885 {
2886   GtkTreeViewColumnPrivate *priv;
2887   gint min_width = 0, min_height = 0;
2888
2889   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2890
2891   priv = tree_column->priv;
2892
2893   g_signal_handler_block (priv->cell_area_context,
2894                           priv->context_changed_signal);
2895
2896   gtk_cell_area_get_preferred_width (priv->cell_area,
2897                                      priv->cell_area_context,
2898                                      priv->tree_view,
2899                                      NULL, NULL);
2900
2901   gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &min_width, NULL);
2902
2903   gtk_cell_area_get_preferred_height_for_width (priv->cell_area,
2904                                                 priv->cell_area_context,
2905                                                 priv->tree_view,
2906                                                 min_width,
2907                                                 &min_height,
2908                                                 NULL);
2909
2910   g_signal_handler_unblock (priv->cell_area_context,
2911                             priv->context_changed_signal);
2912
2913
2914   if (height)
2915     * height = min_height;
2916   if (width)
2917     * width = min_width;
2918
2919 }
2920
2921 /**
2922  * gtk_tree_view_column_cell_render:
2923  * @tree_column: A #GtkTreeViewColumn.
2924  * @cr: cairo context to draw to
2925  * @background_area: entire cell area (including tree expanders and maybe padding on the sides)
2926  * @cell_area: area normally rendered by a cell renderer
2927  * @flags: flags that affect rendering
2928  *
2929  * Renders the cell contained by #tree_column. This is used primarily by the
2930  * #GtkTreeView.
2931  **/
2932 void
2933 _gtk_tree_view_column_cell_render (GtkTreeViewColumn  *tree_column,
2934                                    cairo_t            *cr,
2935                                    const GdkRectangle *background_area,
2936                                    const GdkRectangle *cell_area,
2937                                    guint               flags,
2938                                    gboolean            draw_focus)
2939 {
2940   GtkTreeViewColumnPrivate *priv;
2941
2942   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2943   g_return_if_fail (cr != NULL);
2944   g_return_if_fail (background_area != NULL);
2945   g_return_if_fail (cell_area != NULL);
2946
2947   priv = tree_column->priv;
2948
2949   cairo_save (cr);
2950
2951   gtk_cell_area_render (priv->cell_area, priv->cell_area_context,
2952                         priv->tree_view, cr,
2953                         background_area, cell_area, flags,
2954                         draw_focus);
2955
2956   cairo_restore (cr);
2957 }
2958
2959 gboolean
2960 _gtk_tree_view_column_cell_event (GtkTreeViewColumn  *tree_column,
2961                                   GdkEvent           *event,
2962                                   const GdkRectangle *cell_area,
2963                                   guint               flags)
2964 {
2965   GtkTreeViewColumnPrivate *priv;
2966
2967   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2968
2969   priv = tree_column->priv;
2970
2971   return gtk_cell_area_event (priv->cell_area,
2972                               priv->cell_area_context,
2973                               priv->tree_view,
2974                               event,
2975                               cell_area,
2976                               flags);
2977 }
2978
2979 /**
2980  * gtk_tree_view_column_cell_is_visible:
2981  * @tree_column: A #GtkTreeViewColumn
2982  *
2983  * Returns %TRUE if any of the cells packed into the @tree_column are visible.
2984  * For this to be meaningful, you must first initialize the cells with
2985  * gtk_tree_view_column_cell_set_cell_data()
2986  *
2987  * Return value: %TRUE, if any of the cells packed into the @tree_column are currently visible
2988  **/
2989 gboolean
2990 gtk_tree_view_column_cell_is_visible (GtkTreeViewColumn *tree_column)
2991 {
2992   GList *list;
2993   GList *cells;
2994   GtkTreeViewColumnPrivate *priv;
2995
2996   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2997
2998   priv = tree_column->priv;
2999
3000   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
3001   for (list = cells; list; list = list->next)
3002     {
3003       if (gtk_cell_renderer_get_visible (list->data))
3004         {
3005           g_list_free (cells);
3006           return TRUE;
3007         }
3008     }
3009
3010   g_list_free (cells);
3011
3012   return FALSE;
3013 }
3014
3015 /**
3016  * gtk_tree_view_column_focus_cell:
3017  * @tree_column: A #GtkTreeViewColumn
3018  * @cell: A #GtkCellRenderer
3019  *
3020  * Sets the current keyboard focus to be at @cell, if the column contains
3021  * 2 or more editable and activatable cells.
3022  *
3023  * Since: 2.2
3024  **/
3025 void
3026 gtk_tree_view_column_focus_cell (GtkTreeViewColumn *tree_column,
3027                                  GtkCellRenderer   *cell)
3028 {
3029   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
3030   g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
3031
3032   gtk_cell_area_set_focus_cell (tree_column->priv->cell_area, cell);
3033 }
3034
3035 void
3036 _gtk_tree_view_column_cell_set_dirty (GtkTreeViewColumn *tree_column,
3037                                       gboolean           install_handler)
3038 {
3039   GtkTreeViewColumnPrivate *priv = tree_column->priv;
3040
3041   priv->dirty = TRUE;
3042   priv->padding = 0;
3043   priv->width = 0;
3044
3045   /* Issue a manual reset on the context to have all
3046    * sizes re-requested for the context.
3047    */
3048   g_signal_handler_block (priv->cell_area_context,
3049                           priv->context_changed_signal);
3050   gtk_cell_area_context_reset (priv->cell_area_context);
3051   g_signal_handler_unblock (priv->cell_area_context,
3052                             priv->context_changed_signal);
3053
3054   if (priv->tree_view &&
3055       gtk_widget_get_realized (priv->tree_view))
3056     {
3057       _gtk_tree_view_install_mark_rows_col_dirty (GTK_TREE_VIEW (priv->tree_view), install_handler);
3058       gtk_widget_queue_resize (priv->tree_view);
3059     }
3060 }
3061
3062 gboolean
3063 _gtk_tree_view_column_cell_get_dirty (GtkTreeViewColumn  *tree_column)
3064 {
3065   return tree_column->priv->dirty;
3066 }
3067
3068 /**
3069  * gtk_tree_view_column_cell_get_position:
3070  * @tree_column: a #GtkTreeViewColumn
3071  * @cell_renderer: a #GtkCellRenderer
3072  * @x_offset: (out) (allow-none): return location for the horizontal
3073  *            position of @cell within @tree_column, may be %NULL
3074  * @width: (out) (allow-none): return location for the width of @cell,
3075  *         may be %NULL
3076  *
3077  * Obtains the horizontal position and size of a cell in a column. If the
3078  * cell is not found in the column, @start_pos and @width are not changed and
3079  * %FALSE is returned.
3080  *
3081  * Return value: %TRUE if @cell belongs to @tree_column.
3082  */
3083 gboolean
3084 gtk_tree_view_column_cell_get_position (GtkTreeViewColumn *tree_column,
3085                                         GtkCellRenderer   *cell_renderer,
3086                                         gint              *x_offset,
3087                                         gint              *width)
3088 {
3089   GtkTreeViewColumnPrivate *priv;
3090   GdkRectangle cell_area;
3091   GdkRectangle allocation;
3092
3093   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
3094   g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell_renderer), FALSE);
3095
3096   priv = tree_column->priv;
3097
3098   gtk_tree_view_get_background_area (GTK_TREE_VIEW (priv->tree_view),
3099                                      NULL, tree_column, &cell_area);
3100
3101   gtk_cell_area_get_cell_allocation (priv->cell_area,
3102                                      priv->cell_area_context,
3103                                      priv->tree_view,
3104                                      cell_renderer,
3105                                      &cell_area,
3106                                      &allocation);
3107
3108   if (x_offset)
3109     {
3110       GdkRectangle button_allocation;
3111
3112       /* Retrieve column offset */
3113       gtk_widget_get_allocation (priv->button, &button_allocation);
3114       *x_offset = allocation.x - button_allocation.x;
3115     }
3116   if (width)
3117     *width = allocation.width;
3118
3119   return TRUE;
3120 }
3121
3122 /**
3123  * gtk_tree_view_column_queue_resize:
3124  * @tree_column: A #GtkTreeViewColumn
3125  *
3126  * Flags the column, and the cell renderers added to this column, to have
3127  * their sizes renegotiated.
3128  *
3129  * Since: 2.8
3130  **/
3131 void
3132 gtk_tree_view_column_queue_resize (GtkTreeViewColumn *tree_column)
3133 {
3134   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
3135
3136   if (tree_column->priv->tree_view)
3137     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
3138 }
3139
3140 /**
3141  * gtk_tree_view_column_get_tree_view:
3142  * @tree_column: A #GtkTreeViewColumn
3143  *
3144  * Returns the #GtkTreeView wherein @tree_column has been inserted.
3145  * If @column is currently not inserted in any tree view, %NULL is
3146  * returned.
3147  *
3148  * Return value: (transfer none): The tree view wherein @column has
3149  *     been inserted if any, %NULL otherwise.
3150  *
3151  * Since: 2.12
3152  */
3153 GtkWidget *
3154 gtk_tree_view_column_get_tree_view (GtkTreeViewColumn *tree_column)
3155 {
3156   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
3157
3158   return tree_column->priv->tree_view;
3159 }
3160
3161 /**
3162  * gtk_tree_view_column_get_button:
3163  * @tree_column: A #GtkTreeViewColumn
3164  *
3165  * Returns the button used in the treeview column header
3166  *
3167  * Return value: (transfer none): The button for the column header.
3168  *
3169  * Since: 3.0
3170  */
3171 GtkWidget *
3172 gtk_tree_view_column_get_button (GtkTreeViewColumn *tree_column)
3173 {
3174   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
3175
3176   return tree_column->priv->button;
3177 }
3178
3179 GdkWindow *
3180 _gtk_tree_view_column_get_window (GtkTreeViewColumn  *column)
3181 {
3182   return column->priv->window;
3183 }
3184
3185 void
3186 _gtk_tree_view_column_push_padding (GtkTreeViewColumn  *column,
3187                                     gint                padding)
3188 {
3189   column->priv->padding = MAX (column->priv->padding, padding);
3190 }
3191
3192 gint
3193 _gtk_tree_view_column_get_requested_width (GtkTreeViewColumn  *column)
3194 {
3195   gint requested_width;
3196
3197   gtk_cell_area_context_get_preferred_width (column->priv->cell_area_context, &requested_width, NULL);
3198
3199   return requested_width + column->priv->padding;
3200 }
3201
3202
3203 void
3204 _gtk_tree_view_column_set_resized_width (GtkTreeViewColumn  *column,
3205                                          gint                width)
3206 {
3207   column->priv->resized_width = width;
3208 }
3209
3210 gint
3211 _gtk_tree_view_column_get_resized_width (GtkTreeViewColumn  *column)
3212 {
3213   return column->priv->resized_width;
3214 }
3215
3216 void
3217 _gtk_tree_view_column_set_use_resized_width (GtkTreeViewColumn  *column,
3218                                              gboolean            use_resized_width)
3219 {
3220   column->priv->use_resized_width = use_resized_width;
3221 }
3222
3223 gboolean
3224 _gtk_tree_view_column_get_use_resized_width (GtkTreeViewColumn  *column)
3225 {
3226   return column->priv->use_resized_width;
3227 }
3228
3229 gint
3230 _gtk_tree_view_column_get_drag_x (GtkTreeViewColumn  *column)
3231 {
3232   return column->priv->drag_x;
3233 }
3234
3235 GtkCellAreaContext *
3236 _gtk_tree_view_column_get_context (GtkTreeViewColumn  *column)
3237 {
3238   return column->priv->cell_area_context;
3239 }