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 "gtkbox.h"
  33 #include "gtkmarshalers.h"
  34 #include "gtkarrow.h"
  35 #include "gtkcellareacontext.h"
  36 #include "gtkcellareabox.h"
  37 #include "gtkprivate.h"
  38 #include "gtkintl.h"
  39 #include "gtktypebuiltins.h"
  40
  41
  42 /**
  43  * SECTION:gtktreeviewcolumn
  44  * @Short_description: A visible column in a GtkTreeView widget
  45  * @Title: GtkTreeViewColumn
  46  * @See_also: #GtkTreeView, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode, #GtkTreeSortable,
  47  *   #GtkTreeModelSort, #GtkListStore, #GtkTreeStore, #GtkCellRenderer, #GtkCellEditable,
  48  *   #GtkCellRendererPixbuf, #GtkCellRendererText, #GtkCellRendererToggle
  49  *
  50  * The GtkTreeViewColumn object represents a visible column in a #GtkTreeView widget.
  51  * It allows to set properties of the column header, and functions as a holding pen for
  52  * the cell renderers which determine how the data in the column is displayed.
  53  *
  54  * Please refer to the <link linkend="TreeWidget">tree widget conceptual overview</link>
  55  * for an overview of all the objects and data types related to the tree widget and how
  56  * they work together.
  57  */
  58
  59
  60 /* Type methods */
  61 static void gtk_tree_view_column_cell_layout_init              (GtkCellLayoutIface      *iface);
  62
  63 /* GObject methods */
  64 static void gtk_tree_view_column_set_property                  (GObject                 *object,
  65                                                                 guint                    prop_id,
  66                                                                 const GValue            *value,
  67                                                                 GParamSpec              *pspec);
  68 static void gtk_tree_view_column_get_property                  (GObject                 *object,
  69                                                                 guint                    prop_id,
  70                                                                 GValue                  *value,
  71                                                                 GParamSpec              *pspec);
  72 static void gtk_tree_view_column_finalize                      (GObject                 *object);
  73 static void gtk_tree_view_column_dispose                       (GObject                 *object);
  74 static GObject *gtk_tree_view_column_constructor               (GType                    type,
  75                                                                 guint                    n_construct_properties,
  76                                                                 GObjectConstructParam   *construct_properties);
  77
  78 /* GtkCellLayout implementation */
  79 static void       gtk_tree_view_column_ensure_cell_area        (GtkTreeViewColumn      *column,
  80                                                                 GtkCellArea            *cell_area);
  81
  82 static GtkCellArea *gtk_tree_view_column_cell_layout_get_area  (GtkCellLayout           *cell_layout);
  83
  84 /* Button handling code */
  85 static void gtk_tree_view_column_create_button                 (GtkTreeViewColumn       *tree_column);
  86 static void gtk_tree_view_column_update_button                 (GtkTreeViewColumn       *tree_column);
  87
  88 /* Button signal handlers */
  89 static gint gtk_tree_view_column_button_event                  (GtkWidget               *widget,
  90                                                                 GdkEvent                *event,
  91                                                                 gpointer                 data);
  92 static void gtk_tree_view_column_button_clicked                (GtkWidget               *widget,
  93                                                                 gpointer                 data);
  94 static gboolean gtk_tree_view_column_mnemonic_activate         (GtkWidget *widget,
  95                                                                 gboolean   group_cycling,
  96                                                                 gpointer   data);
  97
  98 /* Property handlers */
  99 static void gtk_tree_view_model_sort_column_changed            (GtkTreeSortable         *sortable,
 100                                                                 GtkTreeViewColumn       *tree_column);
 101
 102 /* GtkCellArea/GtkCellAreaContext callbacks */
 103 static void gtk_tree_view_column_context_changed               (GtkCellAreaContext      *context,
 104                                                                 GParamSpec              *pspec,
 105                                                                 GtkTreeViewColumn       *tree_column);
 106 static void gtk_tree_view_column_add_editable_callback         (GtkCellArea             *area,
 107                                                                 GtkCellRenderer         *renderer,
 108                                                                 GtkCellEditable         *edit_widget,
 109                                                                 GdkRectangle            *cell_area,
 110                                                                 const gchar             *path_string,
 111                                                                 gpointer                 user_data);
 112 static void gtk_tree_view_column_remove_editable_callback      (GtkCellArea             *area,
 113                                                                 GtkCellRenderer         *renderer,
 114                                                                 GtkCellEditable         *edit_widget,
 115                                                                 gpointer                 user_data);
 116
 117 /* Internal functions */
 118 static void gtk_tree_view_column_sort                          (GtkTreeViewColumn       *tree_column,
 119                                                                 gpointer                 data);
 120 static void gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn       *tree_column);
 121 static void gtk_tree_view_column_set_attributesv               (GtkTreeViewColumn       *tree_column,
 122                                                                 GtkCellRenderer         *cell_renderer,
 123                                                                 va_list                  args);
 124
 125 /* GtkBuildable implementation */
 126 static void gtk_tree_view_column_buildable_init                 (GtkBuildableIface     *iface);
 127
 128
 129 struct _GtkTreeViewColumnPrivate
 130 {
 131   GtkWidget *tree_view;
 132   GtkWidget *button;
 133   GtkWidget *child;
 134   GtkWidget *arrow;
 135   GtkWidget *alignment;
 136   GdkWindow *window;
 137   gfloat xalign;
 138   gulong property_changed_signal;
 139
 140   /* Sizing fields */
 141   /* see gtk+/doc/tree-column-sizing.txt for more information on them */
 142   GtkTreeViewColumnSizing column_type;
 143   gint padding;
 144   gint resized_width;
 145   gint x_offset;
 146   gint width;
 147   gint fixed_width;
 148   gint min_width;
 149   gint max_width;
 150
 151   /* dragging columns */
 152   gint drag_x;
 153   gint drag_y;
 154
 155   gchar *title;
 156
 157   /* Sorting */
 158   gulong      sort_clicked_signal;
 159   gulong      sort_column_changed_signal;
 160   gint        sort_column_id;
 161   GtkSortType sort_order;
 162
 163   /* Cell area */
 164   GtkCellArea        *cell_area;
 165   GtkCellAreaContext *cell_area_context;
 166   gulong              add_editable_signal;
 167   gulong              remove_editable_signal;
 168   gulong              context_changed_signal;
 169
 170   /* Flags */
 171   guint visible             : 1;
 172   guint resizable           : 1;
 173   guint clickable           : 1;
 174   guint dirty               : 1;
 175   guint show_sort_indicator : 1;
 176   guint maybe_reordered     : 1;
 177   guint reorderable         : 1;
 178   guint use_resized_width   : 1;
 179   guint expand              : 1;
 180 };
 181
 182 enum
 183 {
 184   PROP_0,
 185   PROP_VISIBLE,
 186   PROP_RESIZABLE,
 187   PROP_X_OFFSET,
 188   PROP_WIDTH,
 189   PROP_SPACING,
 190   PROP_SIZING,
 191   PROP_FIXED_WIDTH,
 192   PROP_MIN_WIDTH,
 193   PROP_MAX_WIDTH,
 194   PROP_TITLE,
 195   PROP_EXPAND,
 196   PROP_CLICKABLE,
 197   PROP_WIDGET,
 198   PROP_ALIGNMENT,
 199   PROP_REORDERABLE,
 200   PROP_SORT_INDICATOR,
 201   PROP_SORT_ORDER,
 202   PROP_SORT_COLUMN_ID,
 203   PROP_CELL_AREA
 204 };
 205
 206 enum
 207 {
 208   CLICKED,
 209   LAST_SIGNAL
 210 };
 211
 212 static guint tree_column_signals[LAST_SIGNAL] = { 0 };
 213
 214 G_DEFINE_TYPE_WITH_CODE (GtkTreeViewColumn, gtk_tree_view_column, G_TYPE_INITIALLY_UNOWNED,
 215                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 216                                                 gtk_tree_view_column_cell_layout_init)
 217                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 218                                                 gtk_tree_view_column_buildable_init))
 219
 220
 221 static void
 222 gtk_tree_view_column_class_init (GtkTreeViewColumnClass *class)
 223 {
 224   GObjectClass *object_class;
 225
 226   object_class = (GObjectClass*) class;
 227
 228   class->clicked = NULL;
 229
 230   object_class->constructor = gtk_tree_view_column_constructor;
 231   object_class->finalize = gtk_tree_view_column_finalize;
 232   object_class->dispose = gtk_tree_view_column_dispose;
 233   object_class->set_property = gtk_tree_view_column_set_property;
 234   object_class->get_property = gtk_tree_view_column_get_property;
 235
 236   tree_column_signals[CLICKED] =
 237     g_signal_new (I_("clicked"),
 238                   G_OBJECT_CLASS_TYPE (object_class),
 239                   G_SIGNAL_RUN_LAST,
 240                   G_STRUCT_OFFSET (GtkTreeViewColumnClass, clicked),
 241                   NULL, NULL,
 242                   _gtk_marshal_VOID__VOID,
 243                   G_TYPE_NONE, 0);
 244
 245   g_object_class_install_property (object_class,
 246                                    PROP_VISIBLE,
 247                                    g_param_spec_boolean ("visible",
 248                                                         P_("Visible"),
 249                                                         P_("Whether to display the column"),
 250                                                          TRUE,
 251                                                          GTK_PARAM_READWRITE));
 252
 253   g_object_class_install_property (object_class,
 254                                    PROP_RESIZABLE,
 255                                    g_param_spec_boolean ("resizable",
 256                                                          P_("Resizable"),
 257                                                          P_("Column is user-resizable"),
 258                                                          FALSE,
 259                                                          GTK_PARAM_READWRITE));
 260
 261   g_object_class_install_property (object_class,
 262                                    PROP_X_OFFSET,
 263                                    g_param_spec_int ("x-offset",
 264                                                      P_("X position"),
 265                                                      P_("Current X position of the column"),
 266                                                      -G_MAXINT,
 267                                                      G_MAXINT,
 268                                                      0,
 269                                                      GTK_PARAM_READABLE));
 270
 271   g_object_class_install_property (object_class,
 272                                    PROP_WIDTH,
 273                                    g_param_spec_int ("width",
 274                                                      P_("Width"),
 275                                                      P_("Current width of the column"),
 276                                                      0,
 277                                                      G_MAXINT,
 278                                                      0,
 279                                                      GTK_PARAM_READABLE));
 280   g_object_class_install_property (object_class,
 281                                    PROP_SPACING,
 282                                    g_param_spec_int ("spacing",
 283                                                      P_("Spacing"),
 284                                                      P_("Space which is inserted between cells"),
 285                                                      0,
 286                                                      G_MAXINT,
 287                                                      0,
 288                                                      GTK_PARAM_READWRITE));
 289   g_object_class_install_property (object_class,
 290                                    PROP_SIZING,
 291                                    g_param_spec_enum ("sizing",
 292                                                       P_("Sizing"),
 293                                                       P_("Resize mode of the column"),
 294                                                       GTK_TYPE_TREE_VIEW_COLUMN_SIZING,
 295                                                       GTK_TREE_VIEW_COLUMN_GROW_ONLY,
 296                                                       GTK_PARAM_READWRITE));
 297
 298   g_object_class_install_property (object_class,
 299                                    PROP_FIXED_WIDTH,
 300                                    g_param_spec_int ("fixed-width",
 301                                                      P_("Fixed Width"),
 302                                                      P_("Current fixed width of the column"),
 303                                                      1,
 304                                                      G_MAXINT,
 305                                                      1, /* not useful */
 306                                                      GTK_PARAM_READWRITE));
 307
 308   g_object_class_install_property (object_class,
 309                                    PROP_MIN_WIDTH,
 310                                    g_param_spec_int ("min-width",
 311                                                      P_("Minimum Width"),
 312                                                      P_("Minimum allowed width of the column"),
 313                                                      -1,
 314                                                      G_MAXINT,
 315                                                      -1,
 316                                                      GTK_PARAM_READWRITE));
 317
 318   g_object_class_install_property (object_class,
 319                                    PROP_MAX_WIDTH,
 320                                    g_param_spec_int ("max-width",
 321                                                      P_("Maximum Width"),
 322                                                      P_("Maximum allowed width of the column"),
 323                                                      -1,
 324                                                      G_MAXINT,
 325                                                      -1,
 326                                                      GTK_PARAM_READWRITE));
 327
 328   g_object_class_install_property (object_class,
 329                                    PROP_TITLE,
 330                                    g_param_spec_string ("title",
 331                                                         P_("Title"),
 332                                                         P_("Title to appear in column header"),
 333                                                         "",
 334                                                         GTK_PARAM_READWRITE));
 335
 336   g_object_class_install_property (object_class,
 337                                    PROP_EXPAND,
 338                                    g_param_spec_boolean ("expand",
 339                                                          P_("Expand"),
 340                                                          P_("Column gets share of extra width allocated to the widget"),
 341                                                          FALSE,
 342                                                          GTK_PARAM_READWRITE));
 343
 344   g_object_class_install_property (object_class,
 345                                    PROP_CLICKABLE,
 346                                    g_param_spec_boolean ("clickable",
 347                                                         P_("Clickable"),
 348                                                         P_("Whether the header can be clicked"),
 349                                                          FALSE,
 350                                                          GTK_PARAM_READWRITE));
 351
 352
 353   g_object_class_install_property (object_class,
 354                                    PROP_WIDGET,
 355                                    g_param_spec_object ("widget",
 356                                                         P_("Widget"),
 357                                                         P_("Widget to put in column header button instead of column title"),
 358                                                         GTK_TYPE_WIDGET,
 359                                                         GTK_PARAM_READWRITE));
 360
 361   g_object_class_install_property (object_class,
 362                                    PROP_ALIGNMENT,
 363                                    g_param_spec_float ("alignment",
 364                                                        P_("Alignment"),
 365                                                        P_("X Alignment of the column header text or widget"),
 366                                                        0.0,
 367                                                        1.0,
 368                                                        0.0,
 369                                                        GTK_PARAM_READWRITE));
 370
 371   g_object_class_install_property (object_class,
 372                                    PROP_REORDERABLE,
 373                                    g_param_spec_boolean ("reorderable",
 374                                                          P_("Reorderable"),
 375                                                          P_("Whether the column can be reordered around the headers"),
 376                                                          FALSE,
 377                                                          GTK_PARAM_READWRITE));
 378
 379   g_object_class_install_property (object_class,
 380                                    PROP_SORT_INDICATOR,
 381                                    g_param_spec_boolean ("sort-indicator",
 382                                                         P_("Sort indicator"),
 383                                                         P_("Whether to show a sort indicator"),
 384                                                          FALSE,
 385                                                          GTK_PARAM_READWRITE));
 386
 387   g_object_class_install_property (object_class,
 388                                    PROP_SORT_ORDER,
 389                                    g_param_spec_enum ("sort-order",
 390                                                       P_("Sort order"),
 391                                                       P_("Sort direction the sort indicator should indicate"),
 392                                                       GTK_TYPE_SORT_TYPE,
 393                                                       GTK_SORT_ASCENDING,
 394                                                       GTK_PARAM_READWRITE));
 395
 396   /**
 397    * GtkTreeViewColumn:sort-column-id:
 398    *
 399    * Logical sort column ID this column sorts on when selected for sorting. Setting the sort column ID makes the column header
 400    * clickable. Set to %-1 to make the column unsortable.
 401    *
 402    * Since: 2.18
 403    **/
 404   g_object_class_install_property (object_class,
 405                                    PROP_SORT_COLUMN_ID,
 406                                    g_param_spec_int ("sort-column-id",
 407                                                      P_("Sort column ID"),
 408                                                      P_("Logical sort column ID this column sorts on when selected for sorting"),
 409                                                      -1,
 410                                                      G_MAXINT,
 411                                                      -1,
 412                                                      GTK_PARAM_READWRITE));
 413
 414   /**
 415    * GtkTreeViewColumn:cell-area:
 416    *
 417    * The #GtkCellArea used to layout cell renderers for this column.
 418    *
 419    * If no area is specified when creating the tree view column with gtk_tree_view_column_new_with_area()
 420    * a horizontally oriented #GtkCellAreaBox will be used.
 421    *
 422    * Since: 3.0
 423    */
 424   g_object_class_install_property (object_class,
 425                                    PROP_CELL_AREA,
 426                                    g_param_spec_object ("cell-area",
 427                                                         P_("Cell Area"),
 428                                                         P_("The GtkCellArea used to layout cells"),
 429                                                         GTK_TYPE_CELL_AREA,
 430                                                         GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 431
 432   g_type_class_add_private (class, sizeof (GtkTreeViewColumnPrivate));
 433 }
 434
 435 static void
 436 gtk_tree_view_column_custom_tag_end (GtkBuildable *buildable,
 437                                      GtkBuilder   *builder,
 438                                      GObject      *child,
 439                                      const gchar  *tagname,
 440                                      gpointer     *data)
 441 {
 442   /* Just ignore the boolean return from here */
 443   _gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data);
 444 }
 445
 446 static void
 447 gtk_tree_view_column_buildable_init (GtkBuildableIface *iface)
 448 {
 449   iface->add_child = _gtk_cell_layout_buildable_add_child;
 450   iface->custom_tag_start = _gtk_cell_layout_buildable_custom_tag_start;
 451   iface->custom_tag_end = gtk_tree_view_column_custom_tag_end;
 452 }
 453
 454 static void
 455 gtk_tree_view_column_cell_layout_init (GtkCellLayoutIface *iface)
 456 {
 457   iface->get_area = gtk_tree_view_column_cell_layout_get_area;
 458 }
 459
 460 static void
 461 gtk_tree_view_column_init (GtkTreeViewColumn *tree_column)
 462 {
 463   GtkTreeViewColumnPrivate *priv;
 464
 465   tree_column->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_column,
 466                                                    GTK_TYPE_TREE_VIEW_COLUMN,
 467                                                    GtkTreeViewColumnPrivate);
 468   priv = tree_column->priv;
 469
 470   priv->button = NULL;
 471   priv->xalign = 0.0;
 472   priv->width = 0;
 473   priv->padding = -1;
 474   priv->min_width = -1;
 475   priv->max_width = -1;
 476   priv->resized_width = 0;
 477   priv->column_type = GTK_TREE_VIEW_COLUMN_GROW_ONLY;
 478   priv->visible = TRUE;
 479   priv->resizable = FALSE;
 480   priv->expand = FALSE;
 481   priv->clickable = FALSE;
 482   priv->dirty = TRUE;
 483   priv->sort_order = GTK_SORT_ASCENDING;
 484   priv->show_sort_indicator = FALSE;
 485   priv->property_changed_signal = 0;
 486   priv->sort_clicked_signal = 0;
 487   priv->sort_column_changed_signal = 0;
 488   priv->sort_column_id = -1;
 489   priv->reorderable = FALSE;
 490   priv->maybe_reordered = FALSE;
 491   priv->fixed_width = 1;
 492   priv->use_resized_width = FALSE;
 493   priv->title = g_strdup ("");
 494 }
 495
 496 static GObject *
 497 gtk_tree_view_column_constructor (GType                  type,
 498                                   guint                  n_construct_properties,
 499                                   GObjectConstructParam *construct_properties)
 500 {
 501   GtkTreeViewColumn        *tree_column;
 502   GObject                  *object;
 503
 504   object = G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->constructor
 505     (type, n_construct_properties, construct_properties);
 506
 507   tree_column = (GtkTreeViewColumn *) object;
 508
 509   gtk_tree_view_column_ensure_cell_area (tree_column, NULL);
 510
 511   return object;
 512 }
 513
 514 static void
 515 gtk_tree_view_column_dispose (GObject *object)
 516 {
 517   GtkTreeViewColumn        *tree_column = (GtkTreeViewColumn *) object;
 518   GtkTreeViewColumnPrivate *priv        = tree_column->priv;
 519
 520   /* Remove this column from its treeview,
 521    * in case this column is destroyed before its treeview.
 522    */
 523   if (priv->tree_view)
 524     gtk_tree_view_remove_column (GTK_TREE_VIEW (priv->tree_view), tree_column);
 525
 526   if (priv->cell_area_context)
 527     {
 528       g_signal_handler_disconnect (priv->cell_area_context,
 529                                    priv->context_changed_signal);
 530
 531       g_object_unref (priv->cell_area_context);
 532
 533       priv->cell_area_context = NULL;
 534       priv->context_changed_signal = 0;
 535     }
 536
 537   if (priv->cell_area)
 538     {
 539       g_signal_handler_disconnect (priv->cell_area,
 540                                    priv->add_editable_signal);
 541       g_signal_handler_disconnect (priv->cell_area,
 542                                    priv->remove_editable_signal);
 543
 544       g_object_unref (priv->cell_area);
 545       priv->cell_area = NULL;
 546       priv->add_editable_signal = 0;
 547       priv->remove_editable_signal = 0;
 548     }
 549
 550   if (priv->child)
 551     {
 552       g_object_unref (priv->child);
 553       priv->child = NULL;
 554     }
 555
 556   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->dispose (object);
 557 }
 558
 559 static void
 560 gtk_tree_view_column_finalize (GObject *object)
 561 {
 562   GtkTreeViewColumn        *tree_column = (GtkTreeViewColumn *) object;
 563   GtkTreeViewColumnPrivate *priv        = tree_column->priv;
 564
 565   g_free (priv->title);
 566
 567   G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->finalize (object);
 568 }
 569
 570 static void
 571 gtk_tree_view_column_set_property (GObject         *object,
 572                                    guint            prop_id,
 573                                    const GValue    *value,
 574                                    GParamSpec      *pspec)
 575 {
 576   GtkTreeViewColumn *tree_column;
 577   GtkCellArea       *area;
 578
 579   tree_column = GTK_TREE_VIEW_COLUMN (object);
 580
 581   switch (prop_id)
 582     {
 583     case PROP_VISIBLE:
 584       gtk_tree_view_column_set_visible (tree_column,
 585                                         g_value_get_boolean (value));
 586       break;
 587
 588     case PROP_RESIZABLE:
 589       gtk_tree_view_column_set_resizable (tree_column,
 590                                           g_value_get_boolean (value));
 591       break;
 592
 593     case PROP_SIZING:
 594       gtk_tree_view_column_set_sizing (tree_column,
 595                                        g_value_get_enum (value));
 596       break;
 597
 598     case PROP_FIXED_WIDTH:
 599       gtk_tree_view_column_set_fixed_width (tree_column,
 600                                             g_value_get_int (value));
 601       break;
 602
 603     case PROP_MIN_WIDTH:
 604       gtk_tree_view_column_set_min_width (tree_column,
 605                                           g_value_get_int (value));
 606       break;
 607
 608     case PROP_MAX_WIDTH:
 609       gtk_tree_view_column_set_max_width (tree_column,
 610                                           g_value_get_int (value));
 611       break;
 612
 613     case PROP_SPACING:
 614       gtk_tree_view_column_set_spacing (tree_column,
 615                                         g_value_get_int (value));
 616       break;
 617
 618     case PROP_TITLE:
 619       gtk_tree_view_column_set_title (tree_column,
 620                                       g_value_get_string (value));
 621       break;
 622
 623     case PROP_EXPAND:
 624       gtk_tree_view_column_set_expand (tree_column,
 625                                        g_value_get_boolean (value));
 626       break;
 627
 628     case PROP_CLICKABLE:
 629       gtk_tree_view_column_set_clickable (tree_column,
 630                                           g_value_get_boolean (value));
 631       break;
 632
 633     case PROP_WIDGET:
 634       gtk_tree_view_column_set_widget (tree_column,
 635                                        (GtkWidget*) g_value_get_object (value));
 636       break;
 637
 638     case PROP_ALIGNMENT:
 639       gtk_tree_view_column_set_alignment (tree_column,
 640                                           g_value_get_float (value));
 641       break;
 642
 643     case PROP_REORDERABLE:
 644       gtk_tree_view_column_set_reorderable (tree_column,
 645                                             g_value_get_boolean (value));
 646       break;
 647
 648     case PROP_SORT_INDICATOR:
 649       gtk_tree_view_column_set_sort_indicator (tree_column,
 650                                                g_value_get_boolean (value));
 651       break;
 652
 653     case PROP_SORT_ORDER:
 654       gtk_tree_view_column_set_sort_order (tree_column,
 655                                            g_value_get_enum (value));
 656       break;
 657
 658     case PROP_SORT_COLUMN_ID:
 659       gtk_tree_view_column_set_sort_column_id (tree_column,
 660                                                g_value_get_int (value));
 661       break;
 662
 663     case PROP_CELL_AREA:
 664       /* Construct-only, can only be assigned once */
 665       area = g_value_get_object (value);
 666
 667       if (area)
 668         {
 669           if (tree_column->priv->cell_area != NULL)
 670             {
 671               g_warning ("cell-area has already been set, ignoring construct property");
 672               g_object_ref_sink (area);
 673               g_object_unref (area);
 674             }
 675           else
 676             gtk_tree_view_column_ensure_cell_area (tree_column, area);
 677         }
 678       break;
 679
 680     default:
 681       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 682       break;
 683     }
 684 }
 685
 686 static void
 687 gtk_tree_view_column_get_property (GObject         *object,
 688                                    guint            prop_id,
 689                                    GValue          *value,
 690                                    GParamSpec      *pspec)
 691 {
 692   GtkTreeViewColumn *tree_column;
 693
 694   tree_column = GTK_TREE_VIEW_COLUMN (object);
 695
 696   switch (prop_id)
 697     {
 698     case PROP_VISIBLE:
 699       g_value_set_boolean (value,
 700                            gtk_tree_view_column_get_visible (tree_column));
 701       break;
 702
 703     case PROP_RESIZABLE:
 704       g_value_set_boolean (value,
 705                            gtk_tree_view_column_get_resizable (tree_column));
 706       break;
 707
 708     case PROP_X_OFFSET:
 709       g_value_set_int (value,
 710                        gtk_tree_view_column_get_x_offset (tree_column));
 711       break;
 712
 713     case PROP_WIDTH:
 714       g_value_set_int (value,
 715                        gtk_tree_view_column_get_width (tree_column));
 716       break;
 717
 718     case PROP_SPACING:
 719       g_value_set_int (value,
 720                        gtk_tree_view_column_get_spacing (tree_column));
 721       break;
 722
 723     case PROP_SIZING:
 724       g_value_set_enum (value,
 725                         gtk_tree_view_column_get_sizing (tree_column));
 726       break;
 727
 728     case PROP_FIXED_WIDTH:
 729       g_value_set_int (value,
 730                        gtk_tree_view_column_get_fixed_width (tree_column));
 731       break;
 732
 733     case PROP_MIN_WIDTH:
 734       g_value_set_int (value,
 735                        gtk_tree_view_column_get_min_width (tree_column));
 736       break;
 737
 738     case PROP_MAX_WIDTH:
 739       g_value_set_int (value,
 740                        gtk_tree_view_column_get_max_width (tree_column));
 741       break;
 742
 743     case PROP_TITLE:
 744       g_value_set_string (value,
 745                           gtk_tree_view_column_get_title (tree_column));
 746       break;
 747
 748     case PROP_EXPAND:
 749       g_value_set_boolean (value,
 750                           gtk_tree_view_column_get_expand (tree_column));
 751       break;
 752
 753     case PROP_CLICKABLE:
 754       g_value_set_boolean (value,
 755                            gtk_tree_view_column_get_clickable (tree_column));
 756       break;
 757
 758     case PROP_WIDGET:
 759       g_value_set_object (value,
 760                           (GObject*) gtk_tree_view_column_get_widget (tree_column));
 761       break;
 762
 763     case PROP_ALIGNMENT:
 764       g_value_set_float (value,
 765                          gtk_tree_view_column_get_alignment (tree_column));
 766       break;
 767
 768     case PROP_REORDERABLE:
 769       g_value_set_boolean (value,
 770                            gtk_tree_view_column_get_reorderable (tree_column));
 771       break;
 772
 773     case PROP_SORT_INDICATOR:
 774       g_value_set_boolean (value,
 775                            gtk_tree_view_column_get_sort_indicator (tree_column));
 776       break;
 777
 778     case PROP_SORT_ORDER:
 779       g_value_set_enum (value,
 780                         gtk_tree_view_column_get_sort_order (tree_column));
 781       break;
 782
 783     case PROP_SORT_COLUMN_ID:
 784       g_value_set_int (value,
 785                        gtk_tree_view_column_get_sort_column_id (tree_column));
 786       break;
 787
 788     case PROP_CELL_AREA:
 789       g_value_set_object (value, tree_column->priv->cell_area);
 790       break;
 791
 792     default:
 793       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 794       break;
 795     }
 796 }
 797
 798 /* Implementation of GtkCellLayout interface
 799  */
 800
 801 static void
 802 gtk_tree_view_column_ensure_cell_area (GtkTreeViewColumn *column,
 803                                        GtkCellArea       *cell_area)
 804 {
 805   GtkTreeViewColumnPrivate *priv = column->priv;
 806
 807   if (priv->cell_area)
 808     return;
 809
 810   if (cell_area)
 811     priv->cell_area = cell_area;
 812   else
 813     priv->cell_area = gtk_cell_area_box_new ();
 814
 815   g_object_ref_sink (priv->cell_area);
 816
 817   priv->add_editable_signal =
 818     g_signal_connect (priv->cell_area, "add-editable",
 819                       G_CALLBACK (gtk_tree_view_column_add_editable_callback),
 820                       column);
 821   priv->remove_editable_signal =
 822     g_signal_connect (priv->cell_area, "remove-editable",
 823                       G_CALLBACK (gtk_tree_view_column_remove_editable_callback),
 824                       column);
 825
 826   priv->cell_area_context = gtk_cell_area_create_context (priv->cell_area);
 827
 828   priv->context_changed_signal =
 829     g_signal_connect (priv->cell_area_context, "notify",
 830                       G_CALLBACK (gtk_tree_view_column_context_changed),
 831                       column);
 832 }
 833
 834 static GtkCellArea *
 835 gtk_tree_view_column_cell_layout_get_area (GtkCellLayout   *cell_layout)
 836 {
 837   GtkTreeViewColumn        *column = GTK_TREE_VIEW_COLUMN (cell_layout);
 838   GtkTreeViewColumnPrivate *priv   = column->priv;
 839
 840   if (G_UNLIKELY (!priv->cell_area))
 841     gtk_tree_view_column_ensure_cell_area (column, NULL);
 842
 843   return priv->cell_area;
 844 }
 845
 846 /* Button handling code
 847  */
 848 static void
 849 gtk_tree_view_column_create_button (GtkTreeViewColumn *tree_column)
 850 {
 851   GtkTreeViewColumnPrivate *priv = tree_column->priv;
 852   GtkTreeView *tree_view;
 853   GtkWidget *child;
 854   GtkWidget *hbox;
 855
 856   tree_view = (GtkTreeView *) priv->tree_view;
 857
 858   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
 859   g_return_if_fail (priv->button == NULL);
 860
 861   gtk_widget_push_composite_child ();
 862   priv->button = gtk_button_new ();
 863   gtk_widget_add_events (priv->button, GDK_POINTER_MOTION_MASK);
 864   gtk_widget_pop_composite_child ();
 865
 866   /* make sure we own a reference to it as well. */
 867   if (_gtk_tree_view_get_header_window (tree_view))
 868     gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
 869
 870   gtk_widget_set_parent (priv->button, GTK_WIDGET (tree_view));
 871
 872   g_signal_connect (priv->button, "event",
 873                     G_CALLBACK (gtk_tree_view_column_button_event),
 874                     tree_column);
 875   g_signal_connect (priv->button, "clicked",
 876                     G_CALLBACK (gtk_tree_view_column_button_clicked),
 877                     tree_column);
 878
 879   priv->alignment = gtk_alignment_new (priv->xalign, 0.5, 0.0, 0.0);
 880
 881   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
 882   priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 883
 884   if (priv->child)
 885     child = priv->child;
 886   else
 887     {
 888       child = gtk_label_new (priv->title);
 889       gtk_widget_show (child);
 890     }
 891
 892   g_signal_connect (child, "mnemonic-activate",
 893                     G_CALLBACK (gtk_tree_view_column_mnemonic_activate),
 894                     tree_column);
 895
 896   if (priv->xalign <= 0.5)
 897     gtk_box_pack_end (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
 898   else
 899     gtk_box_pack_start (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
 900
 901   gtk_box_pack_start (GTK_BOX (hbox), priv->alignment, TRUE, TRUE, 0);
 902
 903   gtk_container_add (GTK_CONTAINER (priv->alignment), child);
 904   gtk_container_add (GTK_CONTAINER (priv->button), hbox);
 905
 906   gtk_widget_show (hbox);
 907   gtk_widget_show (priv->alignment);
 908   gtk_tree_view_column_update_button (tree_column);
 909 }
 910
 911 static void
 912 gtk_tree_view_column_update_button (GtkTreeViewColumn *tree_column)
 913 {
 914   GtkTreeViewColumnPrivate *priv = tree_column->priv;
 915   gint sort_column_id = -1;
 916   GtkWidget *hbox;
 917   GtkWidget *alignment;
 918   GtkWidget *arrow;
 919   GtkWidget *current_child;
 920   GtkArrowType arrow_type = GTK_ARROW_NONE;
 921   GtkTreeModel *model;
 922
 923   if (priv->tree_view)
 924     model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
 925   else
 926     model = NULL;
 927
 928   /* Create a button if necessary */
 929   if (priv->visible &&
 930       priv->button == NULL &&
 931       priv->tree_view &&
 932       gtk_widget_get_realized (priv->tree_view))
 933     gtk_tree_view_column_create_button (tree_column);
 934
 935   if (! priv->button)
 936     return;
 937
 938   hbox = gtk_bin_get_child (GTK_BIN (priv->button));
 939   alignment = priv->alignment;
 940   arrow = priv->arrow;
 941   current_child = gtk_bin_get_child (GTK_BIN (alignment));
 942
 943   /* Set up the actual button */
 944   gtk_alignment_set (GTK_ALIGNMENT (alignment), priv->xalign,
 945                      0.5, 0.0, 0.0);
 946
 947   if (priv->child)
 948     {
 949       if (current_child != priv->child)
 950         {
 951           gtk_container_remove (GTK_CONTAINER (alignment),
 952                                 current_child);
 953           gtk_container_add (GTK_CONTAINER (alignment),
 954                              priv->child);
 955         }
 956     }
 957   else
 958     {
 959       if (current_child == NULL)
 960         {
 961           current_child = gtk_label_new (NULL);
 962           gtk_widget_show (current_child);
 963           gtk_container_add (GTK_CONTAINER (alignment),
 964                              current_child);
 965         }
 966
 967       g_return_if_fail (GTK_IS_LABEL (current_child));
 968
 969       if (priv->title)
 970         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 971                                           priv->title);
 972       else
 973         gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
 974                                           "");
 975     }
 976
 977   if (GTK_IS_TREE_SORTABLE (model))
 978     gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
 979                                           &sort_column_id,
 980                                           NULL);
 981
 982   if (priv->show_sort_indicator)
 983     {
 984       gboolean alternative;
 985
 986       g_object_get (gtk_widget_get_settings (priv->tree_view),
 987                     "gtk-alternative-sort-arrows", &alternative,
 988                     NULL);
 989
 990       switch (priv->sort_order)
 991         {
 992           case GTK_SORT_ASCENDING:
 993             arrow_type = alternative ? GTK_ARROW_UP : GTK_ARROW_DOWN;
 994             break;
 995
 996           case GTK_SORT_DESCENDING:
 997             arrow_type = alternative ? GTK_ARROW_DOWN : GTK_ARROW_UP;
 998             break;
 999
1000           default:
1001             g_warning (G_STRLOC": bad sort order");
1002             break;
1003         }
1004     }
1005
1006   gtk_arrow_set (GTK_ARROW (arrow),
1007                  arrow_type,
1008                  GTK_SHADOW_IN);
1009
1010   /* Put arrow on the right if the text is left-or-center justified, and on the
1011    * left otherwise; do this by packing boxes, so flipping text direction will
1012    * reverse things
1013    */
1014   g_object_ref (arrow);
1015   gtk_container_remove (GTK_CONTAINER (hbox), arrow);
1016
1017   if (priv->xalign <= 0.5)
1018     {
1019       gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
1020     }
1021   else
1022     {
1023       gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
1024       /* move it to the front */
1025       gtk_box_reorder_child (GTK_BOX (hbox), arrow, 0);
1026     }
1027   g_object_unref (arrow);
1028
1029   if (priv->show_sort_indicator
1030       || (GTK_IS_TREE_SORTABLE (model) && priv->sort_column_id >= 0))
1031     gtk_widget_show (arrow);
1032   else
1033     gtk_widget_hide (arrow);
1034
1035   /* It's always safe to hide the button.  It isn't always safe to show it, as
1036    * if you show it before it's realized, it'll get the wrong window. */
1037   if (priv->button &&
1038       priv->tree_view != NULL &&
1039       gtk_widget_get_realized (priv->tree_view))
1040     {
1041       if (priv->visible)
1042         {
1043           if (gdk_window_is_visible (_gtk_tree_view_get_header_window (GTK_TREE_VIEW (priv->tree_view))))
1044             gtk_widget_show_now (priv->button);
1045
1046           if (priv->window)
1047             {
1048               if (priv->resizable)
1049                 {
1050                   gdk_window_show (priv->window);
1051                   gdk_window_raise (priv->window);
1052                 }
1053               else
1054                 {
1055                   gdk_window_hide (priv->window);
1056                 }
1057             }
1058         }
1059       else
1060         {
1061           gtk_widget_hide (priv->button);
1062           if (priv->window)
1063             gdk_window_hide (priv->window);
1064         }
1065     }
1066
1067   if (priv->reorderable || priv->clickable)
1068     {
1069       gtk_widget_set_can_focus (priv->button, TRUE);
1070     }
1071   else
1072     {
1073       gtk_widget_set_can_focus (priv->button, FALSE);
1074       if (gtk_widget_has_focus (priv->button))
1075         {
1076           GtkWidget *toplevel = gtk_widget_get_toplevel (priv->tree_view);
1077           if (gtk_widget_is_toplevel (toplevel))
1078             {
1079               gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
1080             }
1081         }
1082     }
1083   /* Queue a resize on the assumption that we always want to catch all changes
1084    * and columns don't change all that often.
1085    */
1086   if (gtk_widget_get_realized (priv->tree_view))
1087      gtk_widget_queue_resize (priv->tree_view);
1088
1089 }
1090
1091 /* Button signal handlers
1092  */
1093
1094 static gint
1095 gtk_tree_view_column_button_event (GtkWidget *widget,
1096                                    GdkEvent  *event,
1097                                    gpointer   data)
1098 {
1099   GtkTreeViewColumn        *column = (GtkTreeViewColumn *) data;
1100   GtkTreeViewColumnPrivate *priv   = column->priv;
1101
1102   g_return_val_if_fail (event != NULL, FALSE);
1103
1104   if (event->type == GDK_BUTTON_PRESS &&
1105       priv->reorderable &&
1106       ((GdkEventButton *)event)->button == 1)
1107     {
1108       priv->maybe_reordered = TRUE;
1109       gdk_window_get_pointer (gtk_button_get_event_window (GTK_BUTTON (widget)),
1110                               &priv->drag_x,
1111                               &priv->drag_y,
1112                               NULL);
1113       gtk_widget_grab_focus (widget);
1114     }
1115
1116   if (event->type == GDK_BUTTON_RELEASE ||
1117       event->type == GDK_LEAVE_NOTIFY)
1118     priv->maybe_reordered = FALSE;
1119
1120   if (event->type == GDK_MOTION_NOTIFY &&
1121       priv->maybe_reordered &&
1122       (gtk_drag_check_threshold (widget,
1123                                  priv->drag_x,
1124                                  priv->drag_y,
1125                                  (gint) ((GdkEventMotion *)event)->x,
1126                                  (gint) ((GdkEventMotion *)event)->y)))
1127     {
1128       priv->maybe_reordered = FALSE;
1129       _gtk_tree_view_column_start_drag (GTK_TREE_VIEW (priv->tree_view), column,
1130                                         event->motion.device);
1131       return TRUE;
1132     }
1133
1134   if (priv->clickable == FALSE)
1135     {
1136       switch (event->type)
1137         {
1138         case GDK_BUTTON_PRESS:
1139         case GDK_2BUTTON_PRESS:
1140         case GDK_3BUTTON_PRESS:
1141         case GDK_MOTION_NOTIFY:
1142         case GDK_BUTTON_RELEASE:
1143         case GDK_ENTER_NOTIFY:
1144         case GDK_LEAVE_NOTIFY:
1145           return TRUE;
1146         default:
1147           return FALSE;
1148         }
1149     }
1150   return FALSE;
1151 }
1152
1153
1154 static void
1155 gtk_tree_view_column_button_clicked (GtkWidget *widget, gpointer data)
1156 {
1157   g_signal_emit_by_name (data, "clicked");
1158 }
1159
1160 static gboolean
1161 gtk_tree_view_column_mnemonic_activate (GtkWidget *widget,
1162                                         gboolean   group_cycling,
1163                                         gpointer   data)
1164 {
1165   GtkTreeViewColumn        *column = (GtkTreeViewColumn *)data;
1166   GtkTreeViewColumnPrivate *priv   = column->priv;
1167
1168   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), FALSE);
1169
1170   _gtk_tree_view_set_focus_column (GTK_TREE_VIEW (priv->tree_view), column);
1171
1172   if (priv->clickable)
1173     gtk_button_clicked (GTK_BUTTON (priv->button));
1174   else if (gtk_widget_get_can_focus (priv->button))
1175     gtk_widget_grab_focus (priv->button);
1176   else
1177     gtk_widget_grab_focus (priv->tree_view);
1178
1179   return TRUE;
1180 }
1181
1182 static void
1183 gtk_tree_view_model_sort_column_changed (GtkTreeSortable   *sortable,
1184                                          GtkTreeViewColumn *column)
1185 {
1186   GtkTreeViewColumnPrivate *priv = column->priv;
1187   gint sort_column_id;
1188   GtkSortType order;
1189
1190   if (gtk_tree_sortable_get_sort_column_id (sortable,
1191                                             &sort_column_id,
1192                                             &order))
1193     {
1194       if (sort_column_id == priv->sort_column_id)
1195         {
1196           gtk_tree_view_column_set_sort_indicator (column, TRUE);
1197           gtk_tree_view_column_set_sort_order (column, order);
1198         }
1199       else
1200         {
1201           gtk_tree_view_column_set_sort_indicator (column, FALSE);
1202         }
1203     }
1204   else
1205     {
1206       gtk_tree_view_column_set_sort_indicator (column, FALSE);
1207     }
1208 }
1209
1210 static void
1211 gtk_tree_view_column_sort (GtkTreeViewColumn *tree_column,
1212                            gpointer           data)
1213 {
1214   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1215   GtkTreeModel *model;
1216   GtkTreeSortable *sortable;
1217   gint sort_column_id;
1218   GtkSortType order;
1219   gboolean has_sort_column;
1220   gboolean has_default_sort_func;
1221
1222   g_return_if_fail (priv->tree_view != NULL);
1223
1224   model    = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
1225   sortable = GTK_TREE_SORTABLE (model);
1226
1227   has_sort_column =
1228     gtk_tree_sortable_get_sort_column_id (sortable,
1229                                           &sort_column_id,
1230                                           &order);
1231   has_default_sort_func =
1232     gtk_tree_sortable_has_default_sort_func (sortable);
1233
1234   if (has_sort_column &&
1235       sort_column_id == priv->sort_column_id)
1236     {
1237       if (order == GTK_SORT_ASCENDING)
1238         gtk_tree_sortable_set_sort_column_id (sortable,
1239                                               priv->sort_column_id,
1240                                               GTK_SORT_DESCENDING);
1241       else if (order == GTK_SORT_DESCENDING && has_default_sort_func)
1242         gtk_tree_sortable_set_sort_column_id (sortable,
1243                                               GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
1244                                               GTK_SORT_ASCENDING);
1245       else
1246         gtk_tree_sortable_set_sort_column_id (sortable,
1247                                               priv->sort_column_id,
1248                                               GTK_SORT_ASCENDING);
1249     }
1250   else
1251     {
1252       gtk_tree_sortable_set_sort_column_id (sortable,
1253                                             priv->sort_column_id,
1254                                             GTK_SORT_ASCENDING);
1255     }
1256 }
1257
1258 static void
1259 gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn *tree_column)
1260 {
1261   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1262   GtkTreeModel *model;
1263
1264   if (priv->tree_view == NULL)
1265     return;
1266
1267   model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
1268
1269   if (model == NULL)
1270     return;
1271
1272   if (GTK_IS_TREE_SORTABLE (model) &&
1273       priv->sort_column_id != -1)
1274     {
1275       gint real_sort_column_id;
1276       GtkSortType real_order;
1277
1278       if (priv->sort_column_changed_signal == 0)
1279         priv->sort_column_changed_signal =
1280           g_signal_connect (model, "sort-column-changed",
1281                             G_CALLBACK (gtk_tree_view_model_sort_column_changed),
1282                             tree_column);
1283
1284       if (gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
1285                                                 &real_sort_column_id,
1286                                                 &real_order) &&
1287           (real_sort_column_id == priv->sort_column_id))
1288         {
1289           gtk_tree_view_column_set_sort_indicator (tree_column, TRUE);
1290           gtk_tree_view_column_set_sort_order (tree_column, real_order);
1291         }
1292       else
1293         {
1294           gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
1295         }
1296    }
1297 }
1298
1299 static void
1300 gtk_tree_view_column_context_changed  (GtkCellAreaContext      *context,
1301                                        GParamSpec              *pspec,
1302                                        GtkTreeViewColumn       *tree_column)
1303 {
1304   /* Here we want the column re-requested if the underlying context was
1305    * actually reset for any reason, this can happen if the underlying
1306    * area/cell configuration changes (i.e. cell packing properties
1307    * or cell spacing and the like)
1308    *
1309    * Note that we block this handler while requesting for sizes
1310    * so there is no need to check for the new context size being -1,
1311    * we also block the handler when explicitly resetting the context
1312    * so as to avoid some infinite stack recursion.
1313    */
1314   if (!strcmp (pspec->name, "minimum-width") ||
1315       !strcmp (pspec->name, "natural-width") ||
1316       !strcmp (pspec->name, "minimum-height") ||
1317       !strcmp (pspec->name, "natural-height"))
1318     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1319 }
1320
1321 static void
1322 gtk_tree_view_column_add_editable_callback (GtkCellArea       *area,
1323                                             GtkCellRenderer   *renderer,
1324                                             GtkCellEditable   *edit_widget,
1325                                             GdkRectangle      *cell_area,
1326                                             const gchar       *path_string,
1327                                             gpointer           user_data)
1328 {
1329   GtkTreeViewColumn        *column = user_data;
1330   GtkTreeViewColumnPrivate *priv   = column->priv;
1331   GtkTreePath              *path;
1332
1333   if (priv->tree_view)
1334     {
1335       path = gtk_tree_path_new_from_string (path_string);
1336
1337       _gtk_tree_view_add_editable (GTK_TREE_VIEW (priv->tree_view),
1338                                    column,
1339                                    path,
1340                                    edit_widget,
1341                                    cell_area);
1342
1343       gtk_tree_path_free (path);
1344     }
1345 }
1346
1347 static void
1348 gtk_tree_view_column_remove_editable_callback (GtkCellArea     *area,
1349                                                GtkCellRenderer *renderer,
1350                                                GtkCellEditable *edit_widget,
1351                                                gpointer         user_data)
1352 {
1353   GtkTreeViewColumn        *column = user_data;
1354   GtkTreeViewColumnPrivate *priv   = column->priv;
1355
1356   if (priv->tree_view)
1357     _gtk_tree_view_remove_editable (GTK_TREE_VIEW (priv->tree_view),
1358                                     column,
1359                                     edit_widget);
1360 }
1361
1362 /* Exported Private Functions.
1363  * These should only be called by gtktreeview.c or gtktreeviewcolumn.c
1364  */
1365 void
1366 _gtk_tree_view_column_realize_button (GtkTreeViewColumn *column)
1367 {
1368   GtkTreeViewColumnPrivate *priv = column->priv;
1369   GtkAllocation allocation;
1370   GtkTreeView *tree_view;
1371   GdkWindowAttr attr;
1372   guint attributes_mask;
1373   gboolean rtl;
1374
1375   tree_view = (GtkTreeView *)priv->tree_view;
1376   rtl       = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
1377
1378   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
1379   g_return_if_fail (gtk_widget_get_realized (priv->tree_view));
1380   g_return_if_fail (priv->button != NULL);
1381
1382   g_return_if_fail (_gtk_tree_view_get_header_window (tree_view) != NULL);
1383   gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
1384
1385   attr.window_type = GDK_WINDOW_CHILD;
1386   attr.wclass = GDK_INPUT_ONLY;
1387   attr.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
1388   attr.event_mask = gtk_widget_get_events (GTK_WIDGET (tree_view)) |
1389                     (GDK_BUTTON_PRESS_MASK |
1390                      GDK_BUTTON_RELEASE_MASK |
1391                      GDK_POINTER_MOTION_MASK |
1392                      GDK_POINTER_MOTION_HINT_MASK |
1393                      GDK_KEY_PRESS_MASK);
1394   attributes_mask = GDK_WA_CURSOR | GDK_WA_X | GDK_WA_Y;
1395   attr.cursor = gdk_cursor_new_for_display
1396     (gdk_window_get_display (_gtk_tree_view_get_header_window (tree_view)), GDK_SB_H_DOUBLE_ARROW);
1397   attr.y = 0;
1398   attr.width = TREE_VIEW_DRAG_WIDTH;
1399   attr.height = _gtk_tree_view_get_header_height (tree_view);
1400
1401   gtk_widget_get_allocation (priv->button, &allocation);
1402   attr.x       = (allocation.x + (rtl ? 0 : allocation.width)) - TREE_VIEW_DRAG_WIDTH / 2;
1403   priv->window = gdk_window_new (_gtk_tree_view_get_header_window (tree_view),
1404                                  &attr, attributes_mask);
1405   gdk_window_set_user_data (priv->window, tree_view);
1406
1407   gtk_tree_view_column_update_button (column);
1408
1409   g_object_unref (attr.cursor);
1410 }
1411
1412 void
1413 _gtk_tree_view_column_unrealize_button (GtkTreeViewColumn *column)
1414 {
1415   GtkTreeViewColumnPrivate *priv;
1416
1417   g_return_if_fail (column != NULL);
1418
1419   priv = column->priv;
1420   g_return_if_fail (priv->window != NULL);
1421
1422   gdk_window_set_user_data (priv->window, NULL);
1423   gdk_window_destroy (priv->window);
1424   priv->window = NULL;
1425 }
1426
1427 void
1428 _gtk_tree_view_column_unset_model (GtkTreeViewColumn *column,
1429                                    GtkTreeModel      *old_model)
1430 {
1431   GtkTreeViewColumnPrivate *priv = column->priv;
1432
1433   if (priv->sort_column_changed_signal)
1434     {
1435       g_signal_handler_disconnect (old_model,
1436                                    priv->sort_column_changed_signal);
1437       priv->sort_column_changed_signal = 0;
1438     }
1439   gtk_tree_view_column_set_sort_indicator (column, FALSE);
1440 }
1441
1442 void
1443 _gtk_tree_view_column_set_tree_view (GtkTreeViewColumn *column,
1444                                      GtkTreeView       *tree_view)
1445 {
1446   GtkTreeViewColumnPrivate *priv = column->priv;
1447
1448   g_assert (priv->tree_view == NULL);
1449
1450   priv->tree_view = GTK_WIDGET (tree_view);
1451   gtk_tree_view_column_create_button (column);
1452
1453   priv->property_changed_signal =
1454     g_signal_connect_swapped (tree_view,
1455                               "notify::model",
1456                               G_CALLBACK (gtk_tree_view_column_setup_sort_column_id_callback),
1457                               column);
1458
1459   gtk_tree_view_column_setup_sort_column_id_callback (column);
1460 }
1461
1462 void
1463 _gtk_tree_view_column_unset_tree_view (GtkTreeViewColumn *column)
1464 {
1465   GtkTreeViewColumnPrivate *priv = column->priv;
1466
1467   if (priv->tree_view && priv->button)
1468     {
1469       gtk_container_remove (GTK_CONTAINER (priv->tree_view), priv->button);
1470     }
1471   if (priv->property_changed_signal)
1472     {
1473       g_signal_handler_disconnect (priv->tree_view, priv->property_changed_signal);
1474       priv->property_changed_signal = 0;
1475     }
1476
1477   if (priv->sort_column_changed_signal)
1478     {
1479       g_signal_handler_disconnect (gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view)),
1480                                    priv->sort_column_changed_signal);
1481       priv->sort_column_changed_signal = 0;
1482     }
1483
1484   priv->tree_view = NULL;
1485   priv->button = NULL;
1486 }
1487
1488 gboolean
1489 _gtk_tree_view_column_has_editable_cell (GtkTreeViewColumn *column)
1490 {
1491   GtkTreeViewColumnPrivate *priv = column->priv;
1492   gboolean ret = FALSE;
1493   GList *list, *cells;
1494
1495   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
1496
1497   for (list = cells; list; list = list->next)
1498     {
1499       GtkCellRenderer *cell = list->data;
1500       GtkCellRendererMode mode;
1501
1502       g_object_get (cell, "mode", &mode, NULL);
1503
1504       if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
1505         {
1506           ret = TRUE;
1507           break;
1508         }
1509     }
1510
1511   g_list_free (cells);
1512
1513   return ret;
1514 }
1515
1516 /* gets cell being edited */
1517 GtkCellRenderer *
1518 _gtk_tree_view_column_get_edited_cell (GtkTreeViewColumn *column)
1519 {
1520   GtkTreeViewColumnPrivate *priv = column->priv;
1521
1522   return gtk_cell_area_get_edited_cell (priv->cell_area);
1523 }
1524
1525 GtkCellRenderer *
1526 _gtk_tree_view_column_get_cell_at_pos (GtkTreeViewColumn *column,
1527                                        GdkRectangle      *cell_area,
1528                                        GdkRectangle      *background_area,
1529                                        gint               x,
1530                                        gint               y)
1531 {
1532   GtkCellRenderer *match = NULL;
1533   GtkTreeViewColumnPrivate *priv = column->priv;
1534
1535   /* If (x, y) is outside of the background area, immediately return */
1536   if (x < background_area->x ||
1537       x > background_area->x + background_area->width ||
1538       y < background_area->y ||
1539       y > background_area->y + background_area->height)
1540     return NULL;
1541
1542   /* If (x, y) is inside the background area, clamp it to the cell_area
1543    * so that a cell is still returned.  The main reason for doing this
1544    * (on the x axis) is for handling clicks in the indentation area
1545    * (either at the left or right depending on RTL setting).  Another
1546    * reason is for handling clicks on the area where the focus rectangle
1547    * is drawn (this is outside of cell area), this manifests itself
1548    * mainly when a large setting is used for focus-line-width.
1549    */
1550   if (x < cell_area->x)
1551     x = cell_area->x;
1552   else if (x > cell_area->x + cell_area->width)
1553     x = cell_area->x + cell_area->width;
1554
1555   if (y < cell_area->y)
1556     y = cell_area->y;
1557   else if (y > cell_area->y + cell_area->height)
1558     y = cell_area->y + cell_area->height;
1559
1560   match = gtk_cell_area_get_cell_at_position (priv->cell_area,
1561                                               priv->cell_area_context,
1562                                               priv->tree_view,
1563                                               cell_area,
1564                                               x, y,
1565                                               NULL);
1566
1567   return match;
1568 }
1569
1570 gboolean
1571 _gtk_tree_view_column_is_blank_at_pos (GtkTreeViewColumn *column,
1572                                        GdkRectangle      *cell_area,
1573                                        GdkRectangle      *background_area,
1574                                        gint               x,
1575                                        gint               y)
1576 {
1577   GtkCellRenderer *match;
1578   GdkRectangle cell_alloc, aligned_area, inner_area;
1579   GtkTreeViewColumnPrivate *priv = column->priv;
1580
1581   match = _gtk_tree_view_column_get_cell_at_pos (column,
1582                                                  cell_area,
1583                                                  background_area,
1584                                                  x, y);
1585   if (!match)
1586     return FALSE;
1587
1588   gtk_cell_area_get_cell_allocation (priv->cell_area,
1589                                      priv->cell_area_context,
1590                                      priv->tree_view,
1591                                      match,
1592                                      cell_area,
1593                                      &cell_alloc);
1594
1595   gtk_cell_area_inner_cell_area (priv->cell_area, priv->tree_view,
1596                                  &cell_alloc, &inner_area);
1597   gtk_cell_renderer_get_aligned_area (match, priv->tree_view, 0,
1598                                       &inner_area, &aligned_area);
1599
1600   if (x < aligned_area.x ||
1601       x > aligned_area.x + aligned_area.width ||
1602       y < aligned_area.y ||
1603       y > aligned_area.y + aligned_area.height)
1604     return TRUE;
1605
1606   return FALSE;
1607 }
1608
1609 /* Public Functions */
1610
1611
1612 /**
1613  * gtk_tree_view_column_new:
1614  *
1615  * Creates a new #GtkTreeViewColumn.
1616  *
1617  * Return value: A newly created #GtkTreeViewColumn.
1618  **/
1619 GtkTreeViewColumn *
1620 gtk_tree_view_column_new (void)
1621 {
1622   GtkTreeViewColumn *tree_column;
1623
1624   tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, NULL);
1625
1626   return tree_column;
1627 }
1628
1629 /**
1630  * gtk_tree_view_column_new_with_area:
1631  * @area: the #GtkCellArea that the newly created column should use to layout cells.
1632  *
1633  * Creates a new #GtkTreeViewColumn using @area to render its cells.
1634  *
1635  * Return value: A newly created #GtkTreeViewColumn.
1636  *
1637  * Since: 3.0
1638  */
1639 GtkTreeViewColumn *
1640 gtk_tree_view_column_new_with_area (GtkCellArea *area)
1641 {
1642   GtkTreeViewColumn *tree_column;
1643
1644   tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, "cell-area", area, NULL);
1645
1646   return tree_column;
1647 }
1648
1649
1650 /**
1651  * gtk_tree_view_column_new_with_attributes:
1652  * @title: The title to set the header to
1653  * @cell: The #GtkCellRenderer
1654  * @...: A %NULL-terminated list of attributes
1655  *
1656  * Creates a new #GtkTreeViewColumn with a number of default values.
1657  * This is equivalent to calling gtk_tree_view_column_set_title(),
1658  * gtk_tree_view_column_pack_start(), and
1659  * gtk_tree_view_column_set_attributes() on the newly created #GtkTreeViewColumn.
1660  *
1661  * Here's a simple example:
1662  * |[
1663  *  enum { TEXT_COLUMN, COLOR_COLUMN, N_COLUMNS };
1664  *  ...
1665  *  {
1666  *    GtkTreeViewColumn *column;
1667  *    GtkCellRenderer   *renderer = gtk_cell_renderer_text_new ();
1668  *
1669  *    column = gtk_tree_view_column_new_with_attributes ("Title",
1670  *                                                       renderer,
1671  *                                                       "text", TEXT_COLUMN,
1672  *                                                       "foreground", COLOR_COLUMN,
1673  *                                                       NULL);
1674  *  }
1675  * ]|
1676  *
1677  * Return value: A newly created #GtkTreeViewColumn.
1678  **/
1679 GtkTreeViewColumn *
1680 gtk_tree_view_column_new_with_attributes (const gchar     *title,
1681                                           GtkCellRenderer *cell,
1682                                           ...)
1683 {
1684   GtkTreeViewColumn *retval;
1685   va_list args;
1686
1687   retval = gtk_tree_view_column_new ();
1688
1689   gtk_tree_view_column_set_title (retval, title);
1690   gtk_tree_view_column_pack_start (retval, cell, TRUE);
1691
1692   va_start (args, cell);
1693   gtk_tree_view_column_set_attributesv (retval, cell, args);
1694   va_end (args);
1695
1696   return retval;
1697 }
1698
1699 /**
1700  * gtk_tree_view_column_pack_start:
1701  * @tree_column: A #GtkTreeViewColumn.
1702  * @cell: The #GtkCellRenderer.
1703  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1704  *
1705  * Packs the @cell into the beginning of the column. If @expand is %FALSE, then
1706  * the @cell is allocated no more space than it needs. Any unused space is divided
1707  * evenly between cells for which @expand is %TRUE.
1708  **/
1709 void
1710 gtk_tree_view_column_pack_start (GtkTreeViewColumn *tree_column,
1711                                  GtkCellRenderer   *cell,
1712                                  gboolean           expand)
1713 {
1714   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (tree_column), cell, expand);
1715 }
1716
1717 /**
1718  * gtk_tree_view_column_pack_end:
1719  * @tree_column: A #GtkTreeViewColumn.
1720  * @cell: The #GtkCellRenderer.
1721  * @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
1722  *
1723  * Adds the @cell to end of the column. If @expand is %FALSE, then the @cell
1724  * is allocated no more space than it needs. Any unused space is divided
1725  * evenly between cells for which @expand is %TRUE.
1726  **/
1727 void
1728 gtk_tree_view_column_pack_end (GtkTreeViewColumn  *tree_column,
1729                                GtkCellRenderer    *cell,
1730                                gboolean            expand)
1731 {
1732   gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (tree_column), cell, expand);
1733 }
1734
1735 /**
1736  * gtk_tree_view_column_clear:
1737  * @tree_column: A #GtkTreeViewColumn
1738  *
1739  * Unsets all the mappings on all renderers on the @tree_column.
1740  **/
1741 void
1742 gtk_tree_view_column_clear (GtkTreeViewColumn *tree_column)
1743 {
1744   gtk_cell_layout_clear (GTK_CELL_LAYOUT (tree_column));
1745 }
1746
1747 /**
1748  * gtk_tree_view_column_add_attribute:
1749  * @tree_column: A #GtkTreeViewColumn.
1750  * @cell_renderer: the #GtkCellRenderer to set attributes on
1751  * @attribute: An attribute on the renderer
1752  * @column: The column position on the model to get the attribute from.
1753  *
1754  * Adds an attribute mapping to the list in @tree_column.  The @column is the
1755  * column of the model to get a value from, and the @attribute is the
1756  * parameter on @cell_renderer to be set from the value. So for example
1757  * if column 2 of the model contains strings, you could have the
1758  * "text" attribute of a #GtkCellRendererText get its values from
1759  * column 2.
1760  **/
1761 void
1762 gtk_tree_view_column_add_attribute (GtkTreeViewColumn *tree_column,
1763                                     GtkCellRenderer   *cell_renderer,
1764                                     const gchar       *attribute,
1765                                     gint               column)
1766 {
1767   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (tree_column),
1768                                  cell_renderer, attribute, column);
1769 }
1770
1771 static void
1772 gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
1773                                       GtkCellRenderer   *cell_renderer,
1774                                       va_list            args)
1775 {
1776   GtkTreeViewColumnPrivate *priv = tree_column->priv;
1777   gchar *attribute;
1778   gint column;
1779
1780   attribute = va_arg (args, gchar *);
1781
1782   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (priv->cell_area),
1783                                     cell_renderer);
1784
1785   while (attribute != NULL)
1786     {
1787       column = va_arg (args, gint);
1788       gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (priv->cell_area),
1789                                      cell_renderer, attribute, column);
1790       attribute = va_arg (args, gchar *);
1791     }
1792 }
1793
1794 /**
1795  * gtk_tree_view_column_set_attributes:
1796  * @tree_column: A #GtkTreeViewColumn
1797  * @cell_renderer: the #GtkCellRenderer we're setting the attributes of
1798  * @...: A %NULL-terminated list of attributes
1799  *
1800  * Sets the attributes in the list as the attributes of @tree_column.
1801  * The attributes should be in attribute/column order, as in
1802  * gtk_tree_view_column_add_attribute(). All existing attributes
1803  * are removed, and replaced with the new attributes.
1804  */
1805 void
1806 gtk_tree_view_column_set_attributes (GtkTreeViewColumn *tree_column,
1807                                      GtkCellRenderer   *cell_renderer,
1808                                      ...)
1809 {
1810   va_list args;
1811
1812   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1813   g_return_if_fail (GTK_IS_CELL_RENDERER (cell_renderer));
1814
1815   va_start (args, cell_renderer);
1816   gtk_tree_view_column_set_attributesv (tree_column, cell_renderer, args);
1817   va_end (args);
1818 }
1819
1820
1821 /**
1822  * gtk_tree_view_column_set_cell_data_func:
1823  * @tree_column: A #GtkTreeViewColumn
1824  * @cell_renderer: A #GtkCellRenderer
1825  * @func: (allow-none): The #GtkTreeViewColumnFunc to use.
1826  * @func_data: The user data for @func.
1827  * @destroy: The destroy notification for @func_data
1828  *
1829  * Sets the #GtkTreeViewColumnFunc to use for the column.  This
1830  * function is used instead of the standard attributes mapping for
1831  * setting the column value, and should set the value of @tree_column's
1832  * cell renderer as appropriate.  @func may be %NULL to remove an
1833  * older one.
1834  **/
1835 void
1836 gtk_tree_view_column_set_cell_data_func (GtkTreeViewColumn   *tree_column,
1837                                          GtkCellRenderer     *cell_renderer,
1838                                          GtkTreeCellDataFunc  func,
1839                                          gpointer             func_data,
1840                                          GDestroyNotify       destroy)
1841 {
1842   gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (tree_column),
1843                                       cell_renderer,
1844                                       (GtkCellLayoutDataFunc)func,
1845                                       func_data, destroy);
1846 }
1847
1848
1849 /**
1850  * gtk_tree_view_column_clear_attributes:
1851  * @tree_column: a #GtkTreeViewColumn
1852  * @cell_renderer: a #GtkCellRenderer to clear the attribute mapping on.
1853  *
1854  * Clears all existing attributes previously set with
1855  * gtk_tree_view_column_set_attributes().
1856  **/
1857 void
1858 gtk_tree_view_column_clear_attributes (GtkTreeViewColumn *tree_column,
1859                                        GtkCellRenderer   *cell_renderer)
1860 {
1861   gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (tree_column),
1862                                     cell_renderer);
1863 }
1864
1865 /**
1866  * gtk_tree_view_column_set_spacing:
1867  * @tree_column: A #GtkTreeViewColumn.
1868  * @spacing: distance between cell renderers in pixels.
1869  *
1870  * Sets the spacing field of @tree_column, which is the number of pixels to
1871  * place between cell renderers packed into it.
1872  **/
1873 void
1874 gtk_tree_view_column_set_spacing (GtkTreeViewColumn *tree_column,
1875                                   gint               spacing)
1876 {
1877   GtkTreeViewColumnPrivate *priv;
1878
1879   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1880   g_return_if_fail (spacing >= 0);
1881
1882   priv = tree_column->priv;
1883
1884   gtk_cell_area_box_set_spacing (GTK_CELL_AREA_BOX (priv->cell_area),
1885                                  spacing);
1886   if (priv->tree_view)
1887     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1888 }
1889
1890 /**
1891  * gtk_tree_view_column_get_spacing:
1892  * @tree_column: A #GtkTreeViewColumn.
1893  *
1894  * Returns the spacing of @tree_column.
1895  *
1896  * Return value: the spacing of @tree_column.
1897  **/
1898 gint
1899 gtk_tree_view_column_get_spacing (GtkTreeViewColumn *tree_column)
1900 {
1901   GtkTreeViewColumnPrivate *priv;
1902
1903   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
1904
1905   priv = tree_column->priv;
1906
1907   return gtk_cell_area_box_get_spacing (GTK_CELL_AREA_BOX (priv->cell_area));
1908 }
1909
1910 /* Options for manipulating the columns */
1911
1912 /**
1913  * gtk_tree_view_column_set_visible:
1914  * @tree_column: A #GtkTreeViewColumn.
1915  * @visible: %TRUE if the @tree_column is visible.
1916  *
1917  * Sets the visibility of @tree_column.
1918  */
1919 void
1920 gtk_tree_view_column_set_visible (GtkTreeViewColumn *tree_column,
1921                                   gboolean           visible)
1922 {
1923   GtkTreeViewColumnPrivate *priv;
1924
1925   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1926
1927   priv    = tree_column->priv;
1928   visible = !! visible;
1929
1930   if (priv->visible == visible)
1931     return;
1932
1933   priv->visible = visible;
1934
1935   if (priv->visible)
1936     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
1937
1938   if (priv->tree_view)
1939     _gtk_tree_view_reset_header_styles (GTK_TREE_VIEW (priv->tree_view));
1940
1941   gtk_tree_view_column_update_button (tree_column);
1942   g_object_notify (G_OBJECT (tree_column), "visible");
1943 }
1944
1945 /**
1946  * gtk_tree_view_column_get_visible:
1947  * @tree_column: A #GtkTreeViewColumn.
1948  *
1949  * Returns %TRUE if @tree_column is visible.
1950  *
1951  * Return value: whether the column is visible or not.  If it is visible, then
1952  * the tree will show the column.
1953  **/
1954 gboolean
1955 gtk_tree_view_column_get_visible (GtkTreeViewColumn *tree_column)
1956 {
1957   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
1958
1959   return tree_column->priv->visible;
1960 }
1961
1962 /**
1963  * gtk_tree_view_column_set_resizable:
1964  * @tree_column: A #GtkTreeViewColumn
1965  * @resizable: %TRUE, if the column can be resized
1966  *
1967  * If @resizable is %TRUE, then the user can explicitly resize the column by
1968  * grabbing the outer edge of the column button.  If resizable is %TRUE and
1969  * sizing mode of the column is #GTK_TREE_VIEW_COLUMN_AUTOSIZE, then the sizing
1970  * mode is changed to #GTK_TREE_VIEW_COLUMN_GROW_ONLY.
1971  **/
1972 void
1973 gtk_tree_view_column_set_resizable (GtkTreeViewColumn *tree_column,
1974                                     gboolean           resizable)
1975 {
1976   GtkTreeViewColumnPrivate *priv;
1977
1978   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
1979
1980   priv      = tree_column->priv;
1981   resizable = !! resizable;
1982
1983   if (priv->resizable == resizable)
1984     return;
1985
1986   priv->resizable = resizable;
1987
1988   if (resizable && priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
1989     gtk_tree_view_column_set_sizing (tree_column, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
1990
1991   gtk_tree_view_column_update_button (tree_column);
1992
1993   g_object_notify (G_OBJECT (tree_column), "resizable");
1994 }
1995
1996 /**
1997  * gtk_tree_view_column_get_resizable:
1998  * @tree_column: A #GtkTreeViewColumn
1999  *
2000  * Returns %TRUE if the @tree_column can be resized by the end user.
2001  *
2002  * Return value: %TRUE, if the @tree_column can be resized.
2003  **/
2004 gboolean
2005 gtk_tree_view_column_get_resizable (GtkTreeViewColumn *tree_column)
2006 {
2007   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2008
2009   return tree_column->priv->resizable;
2010 }
2011
2012
2013 /**
2014  * gtk_tree_view_column_set_sizing:
2015  * @tree_column: A #GtkTreeViewColumn.
2016  * @type: The #GtkTreeViewColumnSizing.
2017  *
2018  * Sets the growth behavior of @tree_column to @type.
2019  **/
2020 void
2021 gtk_tree_view_column_set_sizing (GtkTreeViewColumn       *tree_column,
2022                                  GtkTreeViewColumnSizing  type)
2023 {
2024   GtkTreeViewColumnPrivate *priv;
2025
2026   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2027
2028   priv      = tree_column->priv;
2029
2030   if (type == priv->column_type)
2031     return;
2032
2033   if (type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2034     gtk_tree_view_column_set_resizable (tree_column, FALSE);
2035
2036   priv->column_type = type;
2037
2038   gtk_tree_view_column_update_button (tree_column);
2039
2040   g_object_notify (G_OBJECT (tree_column), "sizing");
2041 }
2042
2043 /**
2044  * gtk_tree_view_column_get_sizing:
2045  * @tree_column: A #GtkTreeViewColumn.
2046  *
2047  * Returns the current type of @tree_column.
2048  *
2049  * Return value: The type of @tree_column.
2050  **/
2051 GtkTreeViewColumnSizing
2052 gtk_tree_view_column_get_sizing (GtkTreeViewColumn *tree_column)
2053 {
2054   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2055
2056   return tree_column->priv->column_type;
2057 }
2058
2059 /**
2060  * gtk_tree_view_column_get_width:
2061  * @tree_column: A #GtkTreeViewColumn.
2062  *
2063  * Returns the current size of @tree_column in pixels.
2064  *
2065  * Return value: The current width of @tree_column.
2066  **/
2067 gint
2068 gtk_tree_view_column_get_width (GtkTreeViewColumn *tree_column)
2069 {
2070   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2071
2072   return tree_column->priv->width;
2073 }
2074
2075 /**
2076  * gtk_tree_view_column_get_x_offset:
2077  * @tree_column: A #GtkTreeViewColumn.
2078  *
2079  * Returns the current X offset of @tree_column in pixels.
2080  *
2081  * Return value: The current X offset of @tree_column.
2082  *
2083  * Since: 3.2
2084  */
2085 gint
2086 gtk_tree_view_column_get_x_offset (GtkTreeViewColumn *tree_column)
2087 {
2088   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2089
2090   return tree_column->priv->x_offset;
2091 }
2092
2093 gint
2094 _gtk_tree_view_column_request_width (GtkTreeViewColumn *tree_column)
2095 {
2096   GtkTreeViewColumnPrivate *priv;
2097   gint real_requested_width;
2098
2099   priv = tree_column->priv;
2100
2101   if (priv->use_resized_width)
2102     {
2103       real_requested_width = priv->resized_width;
2104     }
2105   else if (priv->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2106     {
2107       real_requested_width = priv->fixed_width;
2108     }
2109   else if (gtk_tree_view_get_headers_visible (GTK_TREE_VIEW (priv->tree_view)))
2110     {
2111       gint button_request;
2112       gint requested_width;
2113
2114       gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &requested_width, NULL);
2115       requested_width += priv->padding;
2116
2117       gtk_widget_get_preferred_width (priv->button, &button_request, NULL);
2118       real_requested_width = MAX (requested_width, button_request);
2119     }
2120   else
2121     {
2122       gint requested_width;
2123
2124       gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &requested_width, NULL);
2125       requested_width += priv->padding;
2126
2127       real_requested_width = requested_width;
2128       if (real_requested_width < 0)
2129         real_requested_width = 0;
2130     }
2131
2132   if (priv->min_width != -1)
2133     real_requested_width = MAX (real_requested_width, priv->min_width);
2134
2135   if (priv->max_width != -1)
2136     real_requested_width = MIN (real_requested_width, priv->max_width);
2137
2138   return real_requested_width;
2139 }
2140
2141 void
2142 _gtk_tree_view_column_allocate (GtkTreeViewColumn *tree_column,
2143                                 int                x_offset,
2144                                 int                width)
2145 {
2146   GtkTreeViewColumnPrivate *priv;
2147   gboolean                  rtl;
2148   GtkAllocation             allocation = { 0, 0, 0, 0 };
2149
2150   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2151
2152   priv = tree_column->priv;
2153
2154   if (priv->width != width)
2155     gtk_widget_queue_draw (priv->tree_view);
2156
2157   priv->x_offset = x_offset;
2158   priv->width = width;
2159
2160   gtk_cell_area_context_allocate (priv->cell_area_context, priv->width - priv->padding, -1);
2161
2162   if (gtk_tree_view_get_headers_visible (GTK_TREE_VIEW (priv->tree_view)))
2163     {
2164       allocation.x      = x_offset;
2165       allocation.y      = 0;
2166       allocation.width  = width;
2167       allocation.height = _gtk_tree_view_get_header_height (GTK_TREE_VIEW (priv->tree_view));
2168
2169       gtk_widget_size_allocate (priv->button, &allocation);
2170     }
2171
2172   if (priv->window)
2173     {
2174       rtl = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
2175       gdk_window_move_resize (priv->window,
2176                               allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2177                               allocation.y,
2178                               TREE_VIEW_DRAG_WIDTH, allocation.height);
2179     }
2180
2181   g_object_notify (G_OBJECT (tree_column), "x-offset");
2182   g_object_notify (G_OBJECT (tree_column), "width");
2183 }
2184
2185 /**
2186  * gtk_tree_view_column_set_fixed_width:
2187  * @tree_column: A #GtkTreeViewColumn.
2188  * @fixed_width: The size to set @tree_column to. Must be greater than 0.
2189  *
2190  * Sets the size of the column in pixels.  This is meaningful only if the sizing
2191  * type is #GTK_TREE_VIEW_COLUMN_FIXED.  The size of the column is clamped to
2192  * the min/max width for the column.  Please note that the min/max width of the
2193  * column doesn't actually affect the "fixed_width" property of the widget, just
2194  * the actual size when displayed.
2195  **/
2196 void
2197 gtk_tree_view_column_set_fixed_width (GtkTreeViewColumn *tree_column,
2198                                       gint               fixed_width)
2199 {
2200   GtkTreeViewColumnPrivate *priv;
2201
2202   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2203   g_return_if_fail (fixed_width > 0);
2204
2205   priv = tree_column->priv;
2206
2207   priv->fixed_width = fixed_width;
2208   priv->use_resized_width = FALSE;
2209
2210   if (priv->tree_view &&
2211       gtk_widget_get_realized (priv->tree_view) &&
2212       priv->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2213     {
2214       gtk_widget_queue_resize (priv->tree_view);
2215     }
2216
2217   g_object_notify (G_OBJECT (tree_column), "fixed-width");
2218 }
2219
2220 /**
2221  * gtk_tree_view_column_get_fixed_width:
2222  * @tree_column: a #GtkTreeViewColumn
2223  *
2224  * Gets the fixed width of the column.  This value is only meaning may not be
2225  * the actual width of the column on the screen, just what is requested.
2226  *
2227  * Return value: the fixed width of the column
2228  **/
2229 gint
2230 gtk_tree_view_column_get_fixed_width (GtkTreeViewColumn *tree_column)
2231 {
2232   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2233
2234   return tree_column->priv->fixed_width;
2235 }
2236
2237 /**
2238  * gtk_tree_view_column_set_min_width:
2239  * @tree_column: A #GtkTreeViewColumn.
2240  * @min_width: The minimum width of the column in pixels, or -1.
2241  *
2242  * Sets the minimum width of the @tree_column.  If @min_width is -1, then the
2243  * minimum width is unset.
2244  **/
2245 void
2246 gtk_tree_view_column_set_min_width (GtkTreeViewColumn *tree_column,
2247                                     gint               min_width)
2248 {
2249   GtkTreeViewColumnPrivate *priv;
2250
2251   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2252   g_return_if_fail (min_width >= -1);
2253
2254   priv = tree_column->priv;
2255
2256   if (min_width == priv->min_width)
2257     return;
2258
2259   if (priv->visible &&
2260       priv->tree_view != NULL &&
2261       gtk_widget_get_realized (priv->tree_view))
2262     {
2263       if (min_width > priv->width)
2264         gtk_widget_queue_resize (priv->tree_view);
2265     }
2266
2267   priv->min_width = min_width;
2268   g_object_freeze_notify (G_OBJECT (tree_column));
2269   if (priv->max_width != -1 && priv->max_width < min_width)
2270     {
2271       priv->max_width = min_width;
2272       g_object_notify (G_OBJECT (tree_column), "max-width");
2273     }
2274   g_object_notify (G_OBJECT (tree_column), "min-width");
2275   g_object_thaw_notify (G_OBJECT (tree_column));
2276
2277   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2278     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
2279                                     tree_column);
2280 }
2281
2282 /**
2283  * gtk_tree_view_column_get_min_width:
2284  * @tree_column: A #GtkTreeViewColumn.
2285  *
2286  * Returns the minimum width in pixels of the @tree_column, or -1 if no minimum
2287  * width is set.
2288  *
2289  * Return value: The minimum width of the @tree_column.
2290  **/
2291 gint
2292 gtk_tree_view_column_get_min_width (GtkTreeViewColumn *tree_column)
2293 {
2294   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
2295
2296   return tree_column->priv->min_width;
2297 }
2298
2299 /**
2300  * gtk_tree_view_column_set_max_width:
2301  * @tree_column: A #GtkTreeViewColumn.
2302  * @max_width: The maximum width of the column in pixels, or -1.
2303  *
2304  * Sets the maximum width of the @tree_column.  If @max_width is -1, then the
2305  * maximum width is unset.  Note, the column can actually be wider than max
2306  * width if it's the last column in a view.  In this case, the column expands to
2307  * fill any extra space.
2308  **/
2309 void
2310 gtk_tree_view_column_set_max_width (GtkTreeViewColumn *tree_column,
2311                                     gint               max_width)
2312 {
2313   GtkTreeViewColumnPrivate *priv;
2314
2315   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2316   g_return_if_fail (max_width >= -1);
2317
2318   priv = tree_column->priv;
2319
2320   if (max_width == priv->max_width)
2321     return;
2322
2323   if (priv->visible &&
2324       priv->tree_view != NULL &&
2325       gtk_widget_get_realized (priv->tree_view))
2326     {
2327       if (max_width != -1 && max_width < priv->width)
2328         gtk_widget_queue_resize (priv->tree_view);
2329     }
2330
2331   priv->max_width = max_width;
2332   g_object_freeze_notify (G_OBJECT (tree_column));
2333   if (max_width != -1 && max_width < priv->min_width)
2334     {
2335       priv->min_width = max_width;
2336       g_object_notify (G_OBJECT (tree_column), "min-width");
2337     }
2338   g_object_notify (G_OBJECT (tree_column), "max-width");
2339   g_object_thaw_notify (G_OBJECT (tree_column));
2340
2341   if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2342     _gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
2343                                     tree_column);
2344 }
2345
2346 /**
2347  * gtk_tree_view_column_get_max_width:
2348  * @tree_column: A #GtkTreeViewColumn.
2349  *
2350  * Returns the maximum width in pixels of the @tree_column, or -1 if no maximum
2351  * width is set.
2352  *
2353  * Return value: The maximum width of the @tree_column.
2354  **/
2355 gint
2356 gtk_tree_view_column_get_max_width (GtkTreeViewColumn *tree_column)
2357 {
2358   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
2359
2360   return tree_column->priv->max_width;
2361 }
2362
2363 /**
2364  * gtk_tree_view_column_clicked:
2365  * @tree_column: a #GtkTreeViewColumn
2366  *
2367  * Emits the "clicked" signal on the column.  This function will only work if
2368  * @tree_column is clickable.
2369  **/
2370 void
2371 gtk_tree_view_column_clicked (GtkTreeViewColumn *tree_column)
2372 {
2373   GtkTreeViewColumnPrivate *priv;
2374
2375   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2376
2377   priv = tree_column->priv;
2378
2379   if (priv->visible &&
2380       priv->button &&
2381       priv->clickable)
2382     gtk_button_clicked (GTK_BUTTON (priv->button));
2383 }
2384
2385 /**
2386  * gtk_tree_view_column_set_title:
2387  * @tree_column: A #GtkTreeViewColumn.
2388  * @title: The title of the @tree_column.
2389  *
2390  * Sets the title of the @tree_column.  If a custom widget has been set, then
2391  * this value is ignored.
2392  **/
2393 void
2394 gtk_tree_view_column_set_title (GtkTreeViewColumn *tree_column,
2395                                 const gchar       *title)
2396 {
2397   GtkTreeViewColumnPrivate *priv;
2398   gchar                    *new_title;
2399
2400   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2401
2402   priv = tree_column->priv;
2403
2404   new_title = g_strdup (title);
2405   g_free (priv->title);
2406   priv->title = new_title;
2407
2408   gtk_tree_view_column_update_button (tree_column);
2409   g_object_notify (G_OBJECT (tree_column), "title");
2410 }
2411
2412 /**
2413  * gtk_tree_view_column_get_title:
2414  * @tree_column: A #GtkTreeViewColumn.
2415  *
2416  * Returns the title of the widget.
2417  *
2418  * Return value: the title of the column. This string should not be
2419  * modified or freed.
2420  **/
2421 const gchar *
2422 gtk_tree_view_column_get_title (GtkTreeViewColumn *tree_column)
2423 {
2424   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2425
2426   return tree_column->priv->title;
2427 }
2428
2429 /**
2430  * gtk_tree_view_column_set_expand:
2431  * @tree_column: A #GtkTreeViewColumn
2432  * @expand: %TRUE if the column should take available extra space, %FALSE if not
2433  *
2434  * Sets the column to take available extra space.  This space is shared equally
2435  * amongst all columns that have the expand set to %TRUE.  If no column has this
2436  * option set, then the last column gets all extra space.  By default, every
2437  * column is created with this %FALSE.
2438  *
2439  * Since: 2.4
2440  **/
2441 void
2442 gtk_tree_view_column_set_expand (GtkTreeViewColumn *tree_column,
2443                                  gboolean           expand)
2444 {
2445   GtkTreeViewColumnPrivate *priv;
2446
2447   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2448
2449   priv = tree_column->priv;
2450
2451   expand = expand?TRUE:FALSE;
2452   if (priv->expand == expand)
2453     return;
2454   priv->expand = expand;
2455
2456   if (priv->visible &&
2457       priv->tree_view != NULL &&
2458       gtk_widget_get_realized (priv->tree_view))
2459     {
2460       /* We want to continue using the original width of the
2461        * column that includes additional space added by the user
2462        * resizing the columns and possibly extra (expanded) space, which
2463        * are not included in the resized width.
2464        */
2465       priv->use_resized_width = FALSE;
2466
2467       gtk_widget_queue_resize (priv->tree_view);
2468     }
2469
2470   g_object_notify (G_OBJECT (tree_column), "expand");
2471 }
2472
2473 /**
2474  * gtk_tree_view_column_get_expand:
2475  * @tree_column: a #GtkTreeViewColumn
2476  *
2477  * Return %TRUE if the column expands to take any available space.
2478  *
2479  * Return value: %TRUE, if the column expands
2480  *
2481  * Since: 2.4
2482  **/
2483 gboolean
2484 gtk_tree_view_column_get_expand (GtkTreeViewColumn *tree_column)
2485 {
2486   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2487
2488   return tree_column->priv->expand;
2489 }
2490
2491 /**
2492  * gtk_tree_view_column_set_clickable:
2493  * @tree_column: A #GtkTreeViewColumn.
2494  * @clickable: %TRUE if the header is active.
2495  *
2496  * Sets the header to be active if @active is %TRUE.  When the header is active,
2497  * then it can take keyboard focus, and can be clicked.
2498  **/
2499 void
2500 gtk_tree_view_column_set_clickable (GtkTreeViewColumn *tree_column,
2501                                     gboolean           clickable)
2502 {
2503   GtkTreeViewColumnPrivate *priv;
2504
2505   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2506
2507   priv = tree_column->priv;
2508
2509   clickable = !! clickable;
2510   if (priv->clickable == clickable)
2511     return;
2512
2513   priv->clickable = clickable;
2514   gtk_tree_view_column_update_button (tree_column);
2515   g_object_notify (G_OBJECT (tree_column), "clickable");
2516 }
2517
2518 /**
2519  * gtk_tree_view_column_get_clickable:
2520  * @tree_column: a #GtkTreeViewColumn
2521  *
2522  * Returns %TRUE if the user can click on the header for the column.
2523  *
2524  * Return value: %TRUE if user can click the column header.
2525  **/
2526 gboolean
2527 gtk_tree_view_column_get_clickable (GtkTreeViewColumn *tree_column)
2528 {
2529   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2530
2531   return tree_column->priv->clickable;
2532 }
2533
2534 /**
2535  * gtk_tree_view_column_set_widget:
2536  * @tree_column: A #GtkTreeViewColumn.
2537  * @widget: (allow-none): A child #GtkWidget, or %NULL.
2538  *
2539  * Sets the widget in the header to be @widget.  If widget is %NULL, then the
2540  * header button is set with a #GtkLabel set to the title of @tree_column.
2541  **/
2542 void
2543 gtk_tree_view_column_set_widget (GtkTreeViewColumn *tree_column,
2544                                  GtkWidget         *widget)
2545 {
2546   GtkTreeViewColumnPrivate *priv;
2547
2548   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2549   g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
2550
2551   priv = tree_column->priv;
2552
2553   if (widget)
2554     g_object_ref_sink (widget);
2555
2556   if (priv->child)
2557     g_object_unref (priv->child);
2558
2559   priv->child = widget;
2560   gtk_tree_view_column_update_button (tree_column);
2561   g_object_notify (G_OBJECT (tree_column), "widget");
2562 }
2563
2564 /**
2565  * gtk_tree_view_column_get_widget:
2566  * @tree_column: A #GtkTreeViewColumn.
2567  *
2568  * Returns the #GtkWidget in the button on the column header.
2569  * If a custom widget has not been set then %NULL is returned.
2570  *
2571  * Return value: (transfer none): The #GtkWidget in the column
2572  *     header, or %NULL
2573  **/
2574 GtkWidget *
2575 gtk_tree_view_column_get_widget (GtkTreeViewColumn *tree_column)
2576 {
2577   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
2578
2579   return tree_column->priv->child;
2580 }
2581
2582 /**
2583  * gtk_tree_view_column_set_alignment:
2584  * @tree_column: A #GtkTreeViewColumn.
2585  * @xalign: The alignment, which is between [0.0 and 1.0] inclusive.
2586  *
2587  * Sets the alignment of the title or custom widget inside the column header.
2588  * The alignment determines its location inside the button -- 0.0 for left, 0.5
2589  * for center, 1.0 for right.
2590  **/
2591 void
2592 gtk_tree_view_column_set_alignment (GtkTreeViewColumn *tree_column,
2593                                     gfloat             xalign)
2594 {
2595   GtkTreeViewColumnPrivate *priv;
2596
2597   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2598
2599   priv = tree_column->priv;
2600
2601   xalign = CLAMP (xalign, 0.0, 1.0);
2602
2603   if (priv->xalign == xalign)
2604     return;
2605
2606   priv->xalign = xalign;
2607   gtk_tree_view_column_update_button (tree_column);
2608   g_object_notify (G_OBJECT (tree_column), "alignment");
2609 }
2610
2611 /**
2612  * gtk_tree_view_column_get_alignment:
2613  * @tree_column: A #GtkTreeViewColumn.
2614  *
2615  * Returns the current x alignment of @tree_column.  This value can range
2616  * between 0.0 and 1.0.
2617  *
2618  * Return value: The current alignent of @tree_column.
2619  **/
2620 gfloat
2621 gtk_tree_view_column_get_alignment (GtkTreeViewColumn *tree_column)
2622 {
2623   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0.5);
2624
2625   return tree_column->priv->xalign;
2626 }
2627
2628 /**
2629  * gtk_tree_view_column_set_reorderable:
2630  * @tree_column: A #GtkTreeViewColumn
2631  * @reorderable: %TRUE, if the column can be reordered.
2632  *
2633  * If @reorderable is %TRUE, then the column can be reordered by the end user
2634  * dragging the header.
2635  **/
2636 void
2637 gtk_tree_view_column_set_reorderable (GtkTreeViewColumn *tree_column,
2638                                       gboolean           reorderable)
2639 {
2640   GtkTreeViewColumnPrivate *priv;
2641
2642   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2643
2644   priv = tree_column->priv;
2645
2646   /*  if (reorderable)
2647       gtk_tree_view_column_set_clickable (tree_column, TRUE);*/
2648
2649   if (priv->reorderable == (reorderable?TRUE:FALSE))
2650     return;
2651
2652   priv->reorderable = (reorderable?TRUE:FALSE);
2653   gtk_tree_view_column_update_button (tree_column);
2654   g_object_notify (G_OBJECT (tree_column), "reorderable");
2655 }
2656
2657 /**
2658  * gtk_tree_view_column_get_reorderable:
2659  * @tree_column: A #GtkTreeViewColumn
2660  *
2661  * Returns %TRUE if the @tree_column can be reordered by the user.
2662  *
2663  * Return value: %TRUE if the @tree_column can be reordered by the user.
2664  **/
2665 gboolean
2666 gtk_tree_view_column_get_reorderable (GtkTreeViewColumn *tree_column)
2667 {
2668   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2669
2670   return tree_column->priv->reorderable;
2671 }
2672
2673
2674 /**
2675  * gtk_tree_view_column_set_sort_column_id:
2676  * @tree_column: a #GtkTreeViewColumn
2677  * @sort_column_id: The @sort_column_id of the model to sort on.
2678  *
2679  * Sets the logical @sort_column_id that this column sorts on when this column
2680  * is selected for sorting.  Doing so makes the column header clickable.
2681  **/
2682 void
2683 gtk_tree_view_column_set_sort_column_id (GtkTreeViewColumn *tree_column,
2684                                          gint               sort_column_id)
2685 {
2686   GtkTreeViewColumnPrivate *priv;
2687
2688   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2689   g_return_if_fail (sort_column_id >= -1);
2690
2691   priv = tree_column->priv;
2692
2693   if (priv->sort_column_id == sort_column_id)
2694     return;
2695
2696   priv->sort_column_id = sort_column_id;
2697
2698   /* Handle unsetting the id */
2699   if (sort_column_id == -1)
2700     {
2701       GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
2702
2703       if (priv->sort_clicked_signal)
2704         {
2705           g_signal_handler_disconnect (tree_column, priv->sort_clicked_signal);
2706           priv->sort_clicked_signal = 0;
2707         }
2708
2709       if (priv->sort_column_changed_signal)
2710         {
2711           g_signal_handler_disconnect (model, priv->sort_column_changed_signal);
2712           priv->sort_column_changed_signal = 0;
2713         }
2714
2715       gtk_tree_view_column_set_sort_order (tree_column, GTK_SORT_ASCENDING);
2716       gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
2717       gtk_tree_view_column_set_clickable (tree_column, FALSE);
2718       g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2719       return;
2720     }
2721
2722   gtk_tree_view_column_set_clickable (tree_column, TRUE);
2723
2724   if (! priv->sort_clicked_signal)
2725     priv->sort_clicked_signal = g_signal_connect (tree_column,
2726                                                   "clicked",
2727                                                   G_CALLBACK (gtk_tree_view_column_sort),
2728                                                   NULL);
2729
2730   gtk_tree_view_column_setup_sort_column_id_callback (tree_column);
2731   g_object_notify (G_OBJECT (tree_column), "sort-column-id");
2732 }
2733
2734 /**
2735  * gtk_tree_view_column_get_sort_column_id:
2736  * @tree_column: a #GtkTreeViewColumn
2737  *
2738  * Gets the logical @sort_column_id that the model sorts on when this
2739  * column is selected for sorting.
2740  * See gtk_tree_view_column_set_sort_column_id().
2741  *
2742  * Return value: the current @sort_column_id for this column, or -1 if
2743  *               this column can't be used for sorting.
2744  **/
2745 gint
2746 gtk_tree_view_column_get_sort_column_id (GtkTreeViewColumn *tree_column)
2747 {
2748   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2749
2750   return tree_column->priv->sort_column_id;
2751 }
2752
2753 /**
2754  * gtk_tree_view_column_set_sort_indicator:
2755  * @tree_column: a #GtkTreeViewColumn
2756  * @setting: %TRUE to display an indicator that the column is sorted
2757  *
2758  * Call this function with a @setting of %TRUE to display an arrow in
2759  * the header button indicating the column is sorted. Call
2760  * gtk_tree_view_column_set_sort_order() to change the direction of
2761  * the arrow.
2762  *
2763  **/
2764 void
2765 gtk_tree_view_column_set_sort_indicator (GtkTreeViewColumn     *tree_column,
2766                                          gboolean               setting)
2767 {
2768   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2769
2770   setting = setting != FALSE;
2771
2772   if (setting == tree_column->priv->show_sort_indicator)
2773     return;
2774
2775   tree_column->priv->show_sort_indicator = setting;
2776   gtk_tree_view_column_update_button (tree_column);
2777   g_object_notify (G_OBJECT (tree_column), "sort-indicator");
2778 }
2779
2780 /**
2781  * gtk_tree_view_column_get_sort_indicator:
2782  * @tree_column: a #GtkTreeViewColumn
2783  *
2784  * Gets the value set by gtk_tree_view_column_set_sort_indicator().
2785  *
2786  * Return value: whether the sort indicator arrow is displayed
2787  **/
2788 gboolean
2789 gtk_tree_view_column_get_sort_indicator  (GtkTreeViewColumn     *tree_column)
2790 {
2791   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2792
2793   return tree_column->priv->show_sort_indicator;
2794 }
2795
2796 /**
2797  * gtk_tree_view_column_set_sort_order:
2798  * @tree_column: a #GtkTreeViewColumn
2799  * @order: sort order that the sort indicator should indicate
2800  *
2801  * Changes the appearance of the sort indicator.
2802  *
2803  * This <emphasis>does not</emphasis> actually sort the model.  Use
2804  * gtk_tree_view_column_set_sort_column_id() if you want automatic sorting
2805  * support.  This function is primarily for custom sorting behavior, and should
2806  * be used in conjunction with gtk_tree_sortable_set_sort_column() to do
2807  * that. For custom models, the mechanism will vary.
2808  *
2809  * The sort indicator changes direction to indicate normal sort or reverse sort.
2810  * Note that you must have the sort indicator enabled to see anything when
2811  * calling this function; see gtk_tree_view_column_set_sort_indicator().
2812  **/
2813 void
2814 gtk_tree_view_column_set_sort_order      (GtkTreeViewColumn     *tree_column,
2815                                           GtkSortType            order)
2816 {
2817   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2818
2819   if (order == tree_column->priv->sort_order)
2820     return;
2821
2822   tree_column->priv->sort_order = order;
2823   gtk_tree_view_column_update_button (tree_column);
2824   g_object_notify (G_OBJECT (tree_column), "sort-order");
2825 }
2826
2827 /**
2828  * gtk_tree_view_column_get_sort_order:
2829  * @tree_column: a #GtkTreeViewColumn
2830  *
2831  * Gets the value set by gtk_tree_view_column_set_sort_order().
2832  *
2833  * Return value: the sort order the sort indicator is indicating
2834  **/
2835 GtkSortType
2836 gtk_tree_view_column_get_sort_order      (GtkTreeViewColumn     *tree_column)
2837 {
2838   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
2839
2840   return tree_column->priv->sort_order;
2841 }
2842
2843 /**
2844  * gtk_tree_view_column_cell_set_cell_data:
2845  * @tree_column: A #GtkTreeViewColumn.
2846  * @tree_model: The #GtkTreeModel to to get the cell renderers attributes from.
2847  * @iter: The #GtkTreeIter to to get the cell renderer's attributes from.
2848  * @is_expander: %TRUE, if the row has children
2849  * @is_expanded: %TRUE, if the row has visible children
2850  *
2851  * Sets the cell renderer based on the @tree_model and @iter.  That is, for
2852  * every attribute mapping in @tree_column, it will get a value from the set
2853  * column on the @iter, and use that value to set the attribute on the cell
2854  * renderer.  This is used primarily by the #GtkTreeView.
2855  **/
2856 void
2857 gtk_tree_view_column_cell_set_cell_data (GtkTreeViewColumn *tree_column,
2858                                          GtkTreeModel      *tree_model,
2859                                          GtkTreeIter       *iter,
2860                                          gboolean           is_expander,
2861                                          gboolean           is_expanded)
2862 {
2863   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2864
2865   if (tree_model == NULL)
2866     return;
2867
2868   gtk_cell_area_apply_attributes (tree_column->priv->cell_area, tree_model, iter,
2869                                   is_expander, is_expanded);
2870 }
2871
2872 /**
2873  * gtk_tree_view_column_cell_get_size:
2874  * @tree_column: A #GtkTreeViewColumn.
2875  * @cell_area: (allow-none): The area a cell in the column will be allocated, or %NULL
2876  * @x_offset: (out) (allow-none): location to return x offset of a cell relative to @cell_area, or %NULL
2877  * @y_offset: (out) (allow-none): location to return y offset of a cell relative to @cell_area, or %NULL
2878  * @width: (out) (allow-none): location to return width needed to render a cell, or %NULL
2879  * @height: (out) (allow-none): location to return height needed to render a cell, or %NULL
2880  *
2881  * Obtains the width and height needed to render the column.  This is used
2882  * primarily by the #GtkTreeView.
2883  **/
2884 void
2885 gtk_tree_view_column_cell_get_size (GtkTreeViewColumn  *tree_column,
2886                                     const GdkRectangle *cell_area,
2887                                     gint               *x_offset,
2888                                     gint               *y_offset,
2889                                     gint               *width,
2890                                     gint               *height)
2891 {
2892   GtkTreeViewColumnPrivate *priv;
2893   gint min_width = 0, min_height = 0;
2894
2895   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2896
2897   priv = tree_column->priv;
2898
2899   g_signal_handler_block (priv->cell_area_context,
2900                           priv->context_changed_signal);
2901
2902   gtk_cell_area_get_preferred_width (priv->cell_area,
2903                                      priv->cell_area_context,
2904                                      priv->tree_view,
2905                                      NULL, NULL);
2906
2907   gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &min_width, NULL);
2908
2909   gtk_cell_area_get_preferred_height_for_width (priv->cell_area,
2910                                                 priv->cell_area_context,
2911                                                 priv->tree_view,
2912                                                 min_width,
2913                                                 &min_height,
2914                                                 NULL);
2915
2916   g_signal_handler_unblock (priv->cell_area_context,
2917                             priv->context_changed_signal);
2918
2919
2920   if (height)
2921     * height = min_height;
2922   if (width)
2923     * width = min_width;
2924
2925 }
2926
2927 /**
2928  * gtk_tree_view_column_cell_render:
2929  * @tree_column: A #GtkTreeViewColumn.
2930  * @cr: cairo context to draw to
2931  * @background_area: entire cell area (including tree expanders and maybe padding on the sides)
2932  * @cell_area: area normally rendered by a cell renderer
2933  * @flags: flags that affect rendering
2934  *
2935  * Renders the cell contained by #tree_column. This is used primarily by the
2936  * #GtkTreeView.
2937  **/
2938 void
2939 _gtk_tree_view_column_cell_render (GtkTreeViewColumn  *tree_column,
2940                                    cairo_t            *cr,
2941                                    const GdkRectangle *background_area,
2942                                    const GdkRectangle *cell_area,
2943                                    guint               flags,
2944                                    gboolean            draw_focus)
2945 {
2946   GtkTreeViewColumnPrivate *priv;
2947
2948   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
2949   g_return_if_fail (cr != NULL);
2950   g_return_if_fail (background_area != NULL);
2951   g_return_if_fail (cell_area != NULL);
2952
2953   priv = tree_column->priv;
2954
2955   cairo_save (cr);
2956
2957   gtk_cell_area_render (priv->cell_area, priv->cell_area_context,
2958                         priv->tree_view, cr,
2959                         background_area, cell_area, flags,
2960                         draw_focus);
2961
2962   cairo_restore (cr);
2963 }
2964
2965 gboolean
2966 _gtk_tree_view_column_cell_event (GtkTreeViewColumn  *tree_column,
2967                                   GdkEvent           *event,
2968                                   const GdkRectangle *cell_area,
2969                                   guint               flags)
2970 {
2971   GtkTreeViewColumnPrivate *priv;
2972
2973   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
2974
2975   priv = tree_column->priv;
2976
2977   return gtk_cell_area_event (priv->cell_area,
2978                               priv->cell_area_context,
2979                               priv->tree_view,
2980                               event,
2981                               cell_area,
2982                               flags);
2983 }
2984
2985 /**
2986  * gtk_tree_view_column_cell_is_visible:
2987  * @tree_column: A #GtkTreeViewColumn
2988  *
2989  * Returns %TRUE if any of the cells packed into the @tree_column are visible.
2990  * For this to be meaningful, you must first initialize the cells with
2991  * gtk_tree_view_column_cell_set_cell_data()
2992  *
2993  * Return value: %TRUE, if any of the cells packed into the @tree_column are currently visible
2994  **/
2995 gboolean
2996 gtk_tree_view_column_cell_is_visible (GtkTreeViewColumn *tree_column)
2997 {
2998   GList *list;
2999   GList *cells;
3000   GtkTreeViewColumnPrivate *priv;
3001
3002   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
3003
3004   priv = tree_column->priv;
3005
3006   cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
3007   for (list = cells; list; list = list->next)
3008     {
3009       if (gtk_cell_renderer_get_visible (list->data))
3010         {
3011           g_list_free (cells);
3012           return TRUE;
3013         }
3014     }
3015
3016   g_list_free (cells);
3017
3018   return FALSE;
3019 }
3020
3021 /**
3022  * gtk_tree_view_column_focus_cell:
3023  * @tree_column: A #GtkTreeViewColumn
3024  * @cell: A #GtkCellRenderer
3025  *
3026  * Sets the current keyboard focus to be at @cell, if the column contains
3027  * 2 or more editable and activatable cells.
3028  *
3029  * Since: 2.2
3030  **/
3031 void
3032 gtk_tree_view_column_focus_cell (GtkTreeViewColumn *tree_column,
3033                                  GtkCellRenderer   *cell)
3034 {
3035   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
3036   g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
3037
3038   gtk_cell_area_set_focus_cell (tree_column->priv->cell_area, cell);
3039 }
3040
3041 void
3042 _gtk_tree_view_column_cell_set_dirty (GtkTreeViewColumn *tree_column,
3043                                       gboolean           install_handler)
3044 {
3045   GtkTreeViewColumnPrivate *priv = tree_column->priv;
3046
3047   priv->dirty = TRUE;
3048   priv->padding = 0;
3049   priv->width = 0;
3050
3051   /* Issue a manual reset on the context to have all
3052    * sizes re-requested for the context.
3053    */
3054   g_signal_handler_block (priv->cell_area_context,
3055                           priv->context_changed_signal);
3056   gtk_cell_area_context_reset (priv->cell_area_context);
3057   g_signal_handler_unblock (priv->cell_area_context,
3058                             priv->context_changed_signal);
3059
3060   if (priv->tree_view &&
3061       gtk_widget_get_realized (priv->tree_view))
3062     {
3063       _gtk_tree_view_install_mark_rows_col_dirty (GTK_TREE_VIEW (priv->tree_view), install_handler);
3064       gtk_widget_queue_resize (priv->tree_view);
3065     }
3066 }
3067
3068 gboolean
3069 _gtk_tree_view_column_cell_get_dirty (GtkTreeViewColumn  *tree_column)
3070 {
3071   return tree_column->priv->dirty;
3072 }
3073
3074 /**
3075  * gtk_tree_view_column_cell_get_position:
3076  * @tree_column: a #GtkTreeViewColumn
3077  * @cell_renderer: a #GtkCellRenderer
3078  * @x_offset: (out) (allow-none): return location for the horizontal
3079  *            position of @cell within @tree_column, may be %NULL
3080  * @width: (out) (allow-none): return location for the width of @cell,
3081  *         may be %NULL
3082  *
3083  * Obtains the horizontal position and size of a cell in a column. If the
3084  * cell is not found in the column, @start_pos and @width are not changed and
3085  * %FALSE is returned.
3086  *
3087  * Return value: %TRUE if @cell belongs to @tree_column.
3088  */
3089 gboolean
3090 gtk_tree_view_column_cell_get_position (GtkTreeViewColumn *tree_column,
3091                                         GtkCellRenderer   *cell_renderer,
3092                                         gint              *x_offset,
3093                                         gint              *width)
3094 {
3095   GtkTreeViewColumnPrivate *priv;
3096   GdkRectangle cell_area;
3097   GdkRectangle allocation;
3098
3099   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
3100   g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell_renderer), FALSE);
3101
3102   priv = tree_column->priv;
3103
3104   if (! gtk_cell_area_has_renderer (priv->cell_area, cell_renderer))
3105     return FALSE;
3106
3107   gtk_tree_view_get_background_area (GTK_TREE_VIEW (priv->tree_view),
3108                                      NULL, tree_column, &cell_area);
3109
3110   gtk_cell_area_get_cell_allocation (priv->cell_area,
3111                                      priv->cell_area_context,
3112                                      priv->tree_view,
3113                                      cell_renderer,
3114                                      &cell_area,
3115                                      &allocation);
3116
3117   if (x_offset)
3118     *x_offset = allocation.x - cell_area.x;
3119
3120   if (width)
3121     *width = allocation.width;
3122
3123   return TRUE;
3124 }
3125
3126 /**
3127  * gtk_tree_view_column_queue_resize:
3128  * @tree_column: A #GtkTreeViewColumn
3129  *
3130  * Flags the column, and the cell renderers added to this column, to have
3131  * their sizes renegotiated.
3132  *
3133  * Since: 2.8
3134  **/
3135 void
3136 gtk_tree_view_column_queue_resize (GtkTreeViewColumn *tree_column)
3137 {
3138   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
3139
3140   if (tree_column->priv->tree_view)
3141     _gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
3142 }
3143
3144 /**
3145  * gtk_tree_view_column_get_tree_view:
3146  * @tree_column: A #GtkTreeViewColumn
3147  *
3148  * Returns the #GtkTreeView wherein @tree_column has been inserted.
3149  * If @column is currently not inserted in any tree view, %NULL is
3150  * returned.
3151  *
3152  * Return value: (transfer none): The tree view wherein @column has
3153  *     been inserted if any, %NULL otherwise.
3154  *
3155  * Since: 2.12
3156  */
3157 GtkWidget *
3158 gtk_tree_view_column_get_tree_view (GtkTreeViewColumn *tree_column)
3159 {
3160   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
3161
3162   return tree_column->priv->tree_view;
3163 }
3164
3165 /**
3166  * gtk_tree_view_column_get_button:
3167  * @tree_column: A #GtkTreeViewColumn
3168  *
3169  * Returns the button used in the treeview column header
3170  *
3171  * Return value: (transfer none): The button for the column header.
3172  *
3173  * Since: 3.0
3174  */
3175 GtkWidget *
3176 gtk_tree_view_column_get_button (GtkTreeViewColumn *tree_column)
3177 {
3178   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
3179
3180   return tree_column->priv->button;
3181 }
3182
3183 GdkWindow *
3184 _gtk_tree_view_column_get_window (GtkTreeViewColumn  *column)
3185 {
3186   return column->priv->window;
3187 }
3188
3189 void
3190 _gtk_tree_view_column_push_padding (GtkTreeViewColumn  *column,
3191                                     gint                padding)
3192 {
3193   column->priv->padding = MAX (column->priv->padding, padding);
3194 }
3195
3196 gint
3197 _gtk_tree_view_column_get_requested_width (GtkTreeViewColumn  *column)
3198 {
3199   gint requested_width;
3200
3201   gtk_cell_area_context_get_preferred_width (column->priv->cell_area_context, &requested_width, NULL);
3202
3203   return requested_width + column->priv->padding;
3204 }
3205
3206
3207 void
3208 _gtk_tree_view_column_set_resized_width (GtkTreeViewColumn  *column,
3209                                          gint                width)
3210 {
3211   column->priv->resized_width = width;
3212 }
3213
3214 gint
3215 _gtk_tree_view_column_get_resized_width (GtkTreeViewColumn  *column)
3216 {
3217   return column->priv->resized_width;
3218 }
3219
3220 void
3221 _gtk_tree_view_column_set_use_resized_width (GtkTreeViewColumn  *column,
3222                                              gboolean            use_resized_width)
3223 {
3224   column->priv->use_resized_width = use_resized_width;
3225 }
3226
3227 gboolean
3228 _gtk_tree_view_column_get_use_resized_width (GtkTreeViewColumn  *column)
3229 {
3230   return column->priv->use_resized_width;
3231 }
3232
3233 gint
3234 _gtk_tree_view_column_get_drag_x (GtkTreeViewColumn  *column)
3235 {
3236   return column->priv->drag_x;
3237 }
3238
3239 GtkCellAreaContext *
3240 _gtk_tree_view_column_get_context (GtkTreeViewColumn  *column)
3241 {
3242   return column->priv->cell_area_context;
3243 }