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