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

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