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gtk2/gtk/gtktreeviewcolumn.c
Kristian Rietveld 4ed781778d Introduce gtk_tree_view_is_blank_at_pos() 
This function is useful to figure out whether the tree view is "blank"
at a given location.  For such locations you might want to popup a
custom popup menu, clear the current selection or start rubber banding.
In the future, we are planning on updating GtkTreeView's user
interactions to take advantage of this new function.

Part of bug 350618.
2011-01-07 15:38:06 +01:00

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/* gtktreeviewcolumn.c
* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gtktreeviewcolumn.h"
#include <string.h>
#include "gtktreeview.h"
#include "gtktreeprivate.h"
#include "gtkcelllayout.h"
#include "gtkbutton.h"
#include "gtkalignment.h"
#include "gtklabel.h"
#include "gtkhbox.h"
#include "gtkmarshalers.h"
#include "gtkarrow.h"
#include "gtkcellareacontext.h"
#include "gtkcellareabox.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtktypebuiltins.h"
/**
* SECTION:gtktreeviewcolumn
* @Short_description: A visible column in a GtkTreeView widget
* @Title: GtkTreeViewColumn
* @See_also: #GtkTreeView, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode, #GtkTreeSortable,
* #GtkTreeModelSort, #GtkListStore, #GtkTreeStore, #GtkCellRenderer, #GtkCellEditable,
* #GtkCellRendererPixbuf, #GtkCellRendererText, #GtkCellRendererToggle
*
* The GtkTreeViewColumn object represents a visible column in a #GtkTreeView widget.
* It allows to set properties of the column header, and functions as a holding pen for
* the cell renderers which determine how the data in the column is displayed.
*
* Please refer to the <link linkend="TreeWidget">tree widget conceptual overview</link>
* for an overview of all the objects and data types related to the tree widget and how
* they work together.
*/
/* Type methods */
static void gtk_tree_view_column_cell_layout_init (GtkCellLayoutIface *iface);
/* GObject methods */
static void gtk_tree_view_column_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_tree_view_column_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_tree_view_column_finalize (GObject *object);
static void gtk_tree_view_column_dispose (GObject *object);
static GObject *gtk_tree_view_column_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_properties);
/* GtkCellLayout implementation */
static GtkCellArea *gtk_tree_view_column_cell_layout_get_area (GtkCellLayout *cell_layout);
/* Button handling code */
static void gtk_tree_view_column_create_button (GtkTreeViewColumn *tree_column);
static void gtk_tree_view_column_update_button (GtkTreeViewColumn *tree_column);
/* Button signal handlers */
static gint gtk_tree_view_column_button_event (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static void gtk_tree_view_column_button_clicked (GtkWidget *widget,
gpointer data);
static gboolean gtk_tree_view_column_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling,
gpointer data);
/* Property handlers */
static void gtk_tree_view_model_sort_column_changed (GtkTreeSortable *sortable,
GtkTreeViewColumn *tree_column);
/* GtkCellArea/GtkCellAreaContext callbacks */
static void gtk_tree_view_column_context_changed (GtkCellAreaContext *context,
GParamSpec *pspec,
GtkTreeViewColumn *tree_column);
static void gtk_tree_view_column_add_editable_callback (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellEditable *edit_widget,
GdkRectangle *cell_area,
const gchar *path_string,
gpointer user_data);
static void gtk_tree_view_column_remove_editable_callback (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellEditable *edit_widget,
gpointer user_data);
/* Internal functions */
static void gtk_tree_view_column_sort (GtkTreeViewColumn *tree_column,
gpointer data);
static void gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn *tree_column);
static void gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell_renderer,
va_list args);
/* GtkBuildable implementation */
static void gtk_tree_view_column_buildable_init (GtkBuildableIface *iface);
struct _GtkTreeViewColumnPrivate
{
GtkWidget *tree_view;
GtkWidget *button;
GtkWidget *child;
GtkWidget *arrow;
GtkWidget *alignment;
GdkWindow *window;
gfloat xalign;
gulong property_changed_signal;
/* Sizing fields */
/* see gtk+/doc/tree-column-sizing.txt for more information on them */
GtkTreeViewColumnSizing column_type;
gint padding;
gint resized_width;
gint width;
gint fixed_width;
gint min_width;
gint max_width;
/* dragging columns */
gint drag_x;
gint drag_y;
gchar *title;
/* Sorting */
gulong sort_clicked_signal;
gulong sort_column_changed_signal;
gint sort_column_id;
GtkSortType sort_order;
/* Cell area */
GtkCellArea *cell_area;
GtkCellAreaContext *cell_area_context;
gulong add_editable_signal;
gulong remove_editable_signal;
gulong context_changed_signal;
/* Flags */
guint visible : 1;
guint resizable : 1;
guint clickable : 1;
guint dirty : 1;
guint show_sort_indicator : 1;
guint maybe_reordered : 1;
guint reorderable : 1;
guint use_resized_width : 1;
guint expand : 1;
};
enum
{
PROP_0,
PROP_VISIBLE,
PROP_RESIZABLE,
PROP_WIDTH,
PROP_SPACING,
PROP_SIZING,
PROP_FIXED_WIDTH,
PROP_MIN_WIDTH,
PROP_MAX_WIDTH,
PROP_TITLE,
PROP_EXPAND,
PROP_CLICKABLE,
PROP_WIDGET,
PROP_ALIGNMENT,
PROP_REORDERABLE,
PROP_SORT_INDICATOR,
PROP_SORT_ORDER,
PROP_SORT_COLUMN_ID,
PROP_CELL_AREA
};
enum
{
CLICKED,
LAST_SIGNAL
};
static guint tree_column_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkTreeViewColumn, gtk_tree_view_column, G_TYPE_INITIALLY_UNOWNED,
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
gtk_tree_view_column_cell_layout_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_tree_view_column_buildable_init))
static void
gtk_tree_view_column_class_init (GtkTreeViewColumnClass *class)
{
GObjectClass *object_class;
object_class = (GObjectClass*) class;
class->clicked = NULL;
object_class->constructor = gtk_tree_view_column_constructor;
object_class->finalize = gtk_tree_view_column_finalize;
object_class->dispose = gtk_tree_view_column_dispose;
object_class->set_property = gtk_tree_view_column_set_property;
object_class->get_property = gtk_tree_view_column_get_property;
tree_column_signals[CLICKED] =
g_signal_new (I_("clicked"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTreeViewColumnClass, clicked),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_object_class_install_property (object_class,
PROP_VISIBLE,
g_param_spec_boolean ("visible",
P_("Visible"),
P_("Whether to display the column"),
TRUE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_RESIZABLE,
g_param_spec_boolean ("resizable",
P_("Resizable"),
P_("Column is user-resizable"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_WIDTH,
g_param_spec_int ("width",
P_("Width"),
P_("Current width of the column"),
0,
G_MAXINT,
0,
GTK_PARAM_READABLE));
g_object_class_install_property (object_class,
PROP_SPACING,
g_param_spec_int ("spacing",
P_("Spacing"),
P_("Space which is inserted between cells"),
0,
G_MAXINT,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_SIZING,
g_param_spec_enum ("sizing",
P_("Sizing"),
P_("Resize mode of the column"),
GTK_TYPE_TREE_VIEW_COLUMN_SIZING,
GTK_TREE_VIEW_COLUMN_GROW_ONLY,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_FIXED_WIDTH,
g_param_spec_int ("fixed-width",
P_("Fixed Width"),
P_("Current fixed width of the column"),
1,
G_MAXINT,
1, /* not useful */
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_MIN_WIDTH,
g_param_spec_int ("min-width",
P_("Minimum Width"),
P_("Minimum allowed width of the column"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_MAX_WIDTH,
g_param_spec_int ("max-width",
P_("Maximum Width"),
P_("Maximum allowed width of the column"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_TITLE,
g_param_spec_string ("title",
P_("Title"),
P_("Title to appear in column header"),
"",
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_EXPAND,
g_param_spec_boolean ("expand",
P_("Expand"),
P_("Column gets share of extra width allocated to the widget"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_CLICKABLE,
g_param_spec_boolean ("clickable",
P_("Clickable"),
P_("Whether the header can be clicked"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_WIDGET,
g_param_spec_object ("widget",
P_("Widget"),
P_("Widget to put in column header button instead of column title"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_ALIGNMENT,
g_param_spec_float ("alignment",
P_("Alignment"),
P_("X Alignment of the column header text or widget"),
0.0,
1.0,
0.0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_REORDERABLE,
g_param_spec_boolean ("reorderable",
P_("Reorderable"),
P_("Whether the column can be reordered around the headers"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_SORT_INDICATOR,
g_param_spec_boolean ("sort-indicator",
P_("Sort indicator"),
P_("Whether to show a sort indicator"),
FALSE,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_SORT_ORDER,
g_param_spec_enum ("sort-order",
P_("Sort order"),
P_("Sort direction the sort indicator should indicate"),
GTK_TYPE_SORT_TYPE,
GTK_SORT_ASCENDING,
GTK_PARAM_READWRITE));
/**
* GtkTreeViewColumn:sort-column-id:
*
* Logical sort column ID this column sorts on when selected for sorting. Setting the sort column ID makes the column header
* clickable. Set to %-1 to make the column unsortable.
*
* Since: 2.18
**/
g_object_class_install_property (object_class,
PROP_SORT_COLUMN_ID,
g_param_spec_int ("sort-column-id",
P_("Sort column ID"),
P_("Logical sort column ID this column sorts on when selected for sorting"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE));
/**
* GtkTreeViewColumn:cell-area:
*
* The #GtkCellArea used to layout cell renderers for this column.
*
* Since: 3.0
*/
g_object_class_install_property (object_class,
PROP_CELL_AREA,
g_param_spec_object ("cell-area",
P_("Cell Area"),
P_("The GtkCellArea used to layout cells"),
GTK_TYPE_CELL_AREA,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_type_class_add_private (class, sizeof (GtkTreeViewColumnPrivate));
}
static void
gtk_tree_view_column_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *data)
{
/* Just ignore the boolean return from here */
_gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data);
}
static void
gtk_tree_view_column_buildable_init (GtkBuildableIface *iface)
{
iface->add_child = _gtk_cell_layout_buildable_add_child;
iface->custom_tag_start = _gtk_cell_layout_buildable_custom_tag_start;
iface->custom_tag_end = gtk_tree_view_column_custom_tag_end;
}
static void
gtk_tree_view_column_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->get_area = gtk_tree_view_column_cell_layout_get_area;
}
static void
gtk_tree_view_column_init (GtkTreeViewColumn *tree_column)
{
GtkTreeViewColumnPrivate *priv;
tree_column->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_column,
GTK_TYPE_TREE_VIEW_COLUMN,
GtkTreeViewColumnPrivate);
priv = tree_column->priv;
priv->button = NULL;
priv->xalign = 0.0;
priv->width = 0;
priv->padding = -1;
priv->min_width = -1;
priv->max_width = -1;
priv->resized_width = 0;
priv->column_type = GTK_TREE_VIEW_COLUMN_GROW_ONLY;
priv->visible = TRUE;
priv->resizable = FALSE;
priv->expand = FALSE;
priv->clickable = FALSE;
priv->dirty = TRUE;
priv->sort_order = GTK_SORT_ASCENDING;
priv->show_sort_indicator = FALSE;
priv->property_changed_signal = 0;
priv->sort_clicked_signal = 0;
priv->sort_column_changed_signal = 0;
priv->sort_column_id = -1;
priv->reorderable = FALSE;
priv->maybe_reordered = FALSE;
priv->fixed_width = 1;
priv->use_resized_width = FALSE;
priv->title = g_strdup ("");
}
static GObject *
gtk_tree_view_column_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_properties)
{
GtkTreeViewColumn *tree_column;
GtkTreeViewColumnPrivate *priv;
GObject *object;
object = G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->constructor
(type, n_construct_properties, construct_properties);
tree_column = (GtkTreeViewColumn *) object;
priv = tree_column->priv;
if (!priv->cell_area)
{
priv->cell_area = gtk_cell_area_box_new ();
g_object_ref_sink (priv->cell_area);
}
gtk_cell_area_set_style_detail (priv->cell_area, "treeview");
priv->add_editable_signal =
g_signal_connect (priv->cell_area, "add-editable",
G_CALLBACK (gtk_tree_view_column_add_editable_callback),
tree_column);
priv->remove_editable_signal =
g_signal_connect (priv->cell_area, "remove-editable",
G_CALLBACK (gtk_tree_view_column_remove_editable_callback),
tree_column);
priv->cell_area_context = gtk_cell_area_create_context (priv->cell_area);
priv->context_changed_signal =
g_signal_connect (priv->cell_area_context, "notify",
G_CALLBACK (gtk_tree_view_column_context_changed), tree_column);
return object;
}
static void
gtk_tree_view_column_dispose (GObject *object)
{
GtkTreeViewColumn *tree_column = (GtkTreeViewColumn *) object;
GtkTreeViewColumnPrivate *priv = tree_column->priv;
if (priv->cell_area_context)
{
g_signal_handler_disconnect (priv->cell_area_context,
priv->context_changed_signal);
g_object_unref (priv->cell_area_context);
priv->cell_area_context = NULL;
priv->context_changed_signal = 0;
}
if (priv->cell_area)
{
g_signal_handler_disconnect (priv->cell_area,
priv->add_editable_signal);
g_signal_handler_disconnect (priv->cell_area,
priv->remove_editable_signal);
g_object_unref (priv->cell_area);
priv->cell_area = NULL;
priv->add_editable_signal = 0;
priv->remove_editable_signal = 0;
}
if (priv->child)
{
g_object_unref (priv->child);
priv->child = NULL;
}
G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->dispose (object);
}
static void
gtk_tree_view_column_finalize (GObject *object)
{
GtkTreeViewColumn *tree_column = (GtkTreeViewColumn *) object;
GtkTreeViewColumnPrivate *priv = tree_column->priv;
g_free (priv->title);
G_OBJECT_CLASS (gtk_tree_view_column_parent_class)->finalize (object);
}
static void
gtk_tree_view_column_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkTreeViewColumn *tree_column;
GtkCellArea *area;
tree_column = GTK_TREE_VIEW_COLUMN (object);
switch (prop_id)
{
case PROP_VISIBLE:
gtk_tree_view_column_set_visible (tree_column,
g_value_get_boolean (value));
break;
case PROP_RESIZABLE:
gtk_tree_view_column_set_resizable (tree_column,
g_value_get_boolean (value));
break;
case PROP_SIZING:
gtk_tree_view_column_set_sizing (tree_column,
g_value_get_enum (value));
break;
case PROP_FIXED_WIDTH:
gtk_tree_view_column_set_fixed_width (tree_column,
g_value_get_int (value));
break;
case PROP_MIN_WIDTH:
gtk_tree_view_column_set_min_width (tree_column,
g_value_get_int (value));
break;
case PROP_MAX_WIDTH:
gtk_tree_view_column_set_max_width (tree_column,
g_value_get_int (value));
break;
case PROP_SPACING:
gtk_tree_view_column_set_spacing (tree_column,
g_value_get_int (value));
break;
case PROP_TITLE:
gtk_tree_view_column_set_title (tree_column,
g_value_get_string (value));
break;
case PROP_EXPAND:
gtk_tree_view_column_set_expand (tree_column,
g_value_get_boolean (value));
break;
case PROP_CLICKABLE:
gtk_tree_view_column_set_clickable (tree_column,
g_value_get_boolean (value));
break;
case PROP_WIDGET:
gtk_tree_view_column_set_widget (tree_column,
(GtkWidget*) g_value_get_object (value));
break;
case PROP_ALIGNMENT:
gtk_tree_view_column_set_alignment (tree_column,
g_value_get_float (value));
break;
case PROP_REORDERABLE:
gtk_tree_view_column_set_reorderable (tree_column,
g_value_get_boolean (value));
break;
case PROP_SORT_INDICATOR:
gtk_tree_view_column_set_sort_indicator (tree_column,
g_value_get_boolean (value));
break;
case PROP_SORT_ORDER:
gtk_tree_view_column_set_sort_order (tree_column,
g_value_get_enum (value));
break;
case PROP_SORT_COLUMN_ID:
gtk_tree_view_column_set_sort_column_id (tree_column,
g_value_get_int (value));
break;
case PROP_CELL_AREA:
/* Construct-only, can only be assigned once */
area = g_value_get_object (value);
if (area)
tree_column->priv->cell_area = g_object_ref_sink (area);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_tree_view_column_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkTreeViewColumn *tree_column;
tree_column = GTK_TREE_VIEW_COLUMN (object);
switch (prop_id)
{
case PROP_VISIBLE:
g_value_set_boolean (value,
gtk_tree_view_column_get_visible (tree_column));
break;
case PROP_RESIZABLE:
g_value_set_boolean (value,
gtk_tree_view_column_get_resizable (tree_column));
break;
case PROP_WIDTH:
g_value_set_int (value,
gtk_tree_view_column_get_width (tree_column));
break;
case PROP_SPACING:
g_value_set_int (value,
gtk_tree_view_column_get_spacing (tree_column));
break;
case PROP_SIZING:
g_value_set_enum (value,
gtk_tree_view_column_get_sizing (tree_column));
break;
case PROP_FIXED_WIDTH:
g_value_set_int (value,
gtk_tree_view_column_get_fixed_width (tree_column));
break;
case PROP_MIN_WIDTH:
g_value_set_int (value,
gtk_tree_view_column_get_min_width (tree_column));
break;
case PROP_MAX_WIDTH:
g_value_set_int (value,
gtk_tree_view_column_get_max_width (tree_column));
break;
case PROP_TITLE:
g_value_set_string (value,
gtk_tree_view_column_get_title (tree_column));
break;
case PROP_EXPAND:
g_value_set_boolean (value,
gtk_tree_view_column_get_expand (tree_column));
break;
case PROP_CLICKABLE:
g_value_set_boolean (value,
gtk_tree_view_column_get_clickable (tree_column));
break;
case PROP_WIDGET:
g_value_set_object (value,
(GObject*) gtk_tree_view_column_get_widget (tree_column));
break;
case PROP_ALIGNMENT:
g_value_set_float (value,
gtk_tree_view_column_get_alignment (tree_column));
break;
case PROP_REORDERABLE:
g_value_set_boolean (value,
gtk_tree_view_column_get_reorderable (tree_column));
break;
case PROP_SORT_INDICATOR:
g_value_set_boolean (value,
gtk_tree_view_column_get_sort_indicator (tree_column));
break;
case PROP_SORT_ORDER:
g_value_set_enum (value,
gtk_tree_view_column_get_sort_order (tree_column));
break;
case PROP_SORT_COLUMN_ID:
g_value_set_int (value,
gtk_tree_view_column_get_sort_column_id (tree_column));
break;
case PROP_CELL_AREA:
g_value_set_object (value, tree_column->priv->cell_area);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* Implementation of GtkCellLayout interface
*/
static GtkCellArea *
gtk_tree_view_column_cell_layout_get_area (GtkCellLayout *cell_layout)
{
GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (cell_layout);
GtkTreeViewColumnPrivate *priv = column->priv;
return priv->cell_area;
}
/* Button handling code
*/
static void
gtk_tree_view_column_create_button (GtkTreeViewColumn *tree_column)
{
GtkTreeViewColumnPrivate *priv = tree_column->priv;
GtkTreeView *tree_view;
GtkWidget *child;
GtkWidget *hbox;
tree_view = (GtkTreeView *) priv->tree_view;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (priv->button == NULL);
gtk_widget_push_composite_child ();
priv->button = gtk_button_new ();
gtk_widget_add_events (priv->button, GDK_POINTER_MOTION_MASK);
gtk_widget_pop_composite_child ();
/* make sure we own a reference to it as well. */
if (_gtk_tree_view_get_header_window (tree_view))
gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
gtk_widget_set_parent (priv->button, GTK_WIDGET (tree_view));
g_signal_connect (priv->button, "event",
G_CALLBACK (gtk_tree_view_column_button_event),
tree_column);
g_signal_connect (priv->button, "clicked",
G_CALLBACK (gtk_tree_view_column_button_clicked),
tree_column);
priv->alignment = gtk_alignment_new (priv->xalign, 0.5, 0.0, 0.0);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
priv->arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
if (priv->child)
child = priv->child;
else
{
child = gtk_label_new (priv->title);
gtk_widget_show (child);
}
g_signal_connect (child, "mnemonic-activate",
G_CALLBACK (gtk_tree_view_column_mnemonic_activate),
tree_column);
if (priv->xalign <= 0.5)
gtk_box_pack_end (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
else
gtk_box_pack_start (GTK_BOX (hbox), priv->arrow, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (hbox), priv->alignment, TRUE, TRUE, 0);
gtk_container_add (GTK_CONTAINER (priv->alignment), child);
gtk_container_add (GTK_CONTAINER (priv->button), hbox);
gtk_widget_show (hbox);
gtk_widget_show (priv->alignment);
gtk_tree_view_column_update_button (tree_column);
}
static void
gtk_tree_view_column_update_button (GtkTreeViewColumn *tree_column)
{
GtkTreeViewColumnPrivate *priv = tree_column->priv;
gint sort_column_id = -1;
GtkWidget *hbox;
GtkWidget *alignment;
GtkWidget *arrow;
GtkWidget *current_child;
GtkArrowType arrow_type = GTK_ARROW_NONE;
GtkTreeModel *model;
if (priv->tree_view)
model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
else
model = NULL;
/* Create a button if necessary */
if (priv->visible &&
priv->button == NULL &&
priv->tree_view &&
gtk_widget_get_realized (priv->tree_view))
gtk_tree_view_column_create_button (tree_column);
if (! priv->button)
return;
hbox = gtk_bin_get_child (GTK_BIN (priv->button));
alignment = priv->alignment;
arrow = priv->arrow;
current_child = gtk_bin_get_child (GTK_BIN (alignment));
/* Set up the actual button */
gtk_alignment_set (GTK_ALIGNMENT (alignment), priv->xalign,
0.5, 0.0, 0.0);
if (priv->child)
{
if (current_child != priv->child)
{
gtk_container_remove (GTK_CONTAINER (alignment),
current_child);
gtk_container_add (GTK_CONTAINER (alignment),
priv->child);
}
}
else
{
if (current_child == NULL)
{
current_child = gtk_label_new (NULL);
gtk_widget_show (current_child);
gtk_container_add (GTK_CONTAINER (alignment),
current_child);
}
g_return_if_fail (GTK_IS_LABEL (current_child));
if (priv->title)
gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
priv->title);
else
gtk_label_set_text_with_mnemonic (GTK_LABEL (current_child),
"");
}
if (GTK_IS_TREE_SORTABLE (model))
gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
&sort_column_id,
NULL);
if (priv->show_sort_indicator)
{
gboolean alternative;
g_object_get (gtk_widget_get_settings (priv->tree_view),
"gtk-alternative-sort-arrows", &alternative,
NULL);
switch (priv->sort_order)
{
case GTK_SORT_ASCENDING:
arrow_type = alternative ? GTK_ARROW_UP : GTK_ARROW_DOWN;
break;
case GTK_SORT_DESCENDING:
arrow_type = alternative ? GTK_ARROW_DOWN : GTK_ARROW_UP;
break;
default:
g_warning (G_STRLOC": bad sort order");
break;
}
}
gtk_arrow_set (GTK_ARROW (arrow),
arrow_type,
GTK_SHADOW_IN);
/* Put arrow on the right if the text is left-or-center justified, and on the
* left otherwise; do this by packing boxes, so flipping text direction will
* reverse things
*/
g_object_ref (arrow);
gtk_container_remove (GTK_CONTAINER (hbox), arrow);
if (priv->xalign <= 0.5)
{
gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
}
else
{
gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
/* move it to the front */
gtk_box_reorder_child (GTK_BOX (hbox), arrow, 0);
}
g_object_unref (arrow);
if (priv->show_sort_indicator
|| (GTK_IS_TREE_SORTABLE (model) && priv->sort_column_id >= 0))
gtk_widget_show (arrow);
else
gtk_widget_hide (arrow);
/* It's always safe to hide the button. It isn't always safe to show it, as
* if you show it before it's realized, it'll get the wrong window. */
if (priv->button &&
priv->tree_view != NULL &&
gtk_widget_get_realized (priv->tree_view))
{
if (priv->visible)
{
if (gdk_window_is_visible (_gtk_tree_view_get_header_window (GTK_TREE_VIEW (priv->tree_view))))
gtk_widget_show_now (priv->button);
if (priv->window)
{
if (priv->resizable)
{
gdk_window_show (priv->window);
gdk_window_raise (priv->window);
}
else
{
gdk_window_hide (priv->window);
}
}
}
else
{
gtk_widget_hide (priv->button);
if (priv->window)
gdk_window_hide (priv->window);
}
}
if (priv->reorderable || priv->clickable)
{
gtk_widget_set_can_focus (priv->button, TRUE);
}
else
{
gtk_widget_set_can_focus (priv->button, FALSE);
if (gtk_widget_has_focus (priv->button))
{
GtkWidget *toplevel = gtk_widget_get_toplevel (priv->tree_view);
if (gtk_widget_is_toplevel (toplevel))
{
gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
}
}
}
/* Queue a resize on the assumption that we always want to catch all changes
* and columns don't change all that often.
*/
if (gtk_widget_get_realized (priv->tree_view))
gtk_widget_queue_resize (priv->tree_view);
}
/* Button signal handlers
*/
static gint
gtk_tree_view_column_button_event (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
GtkTreeViewColumn *column = (GtkTreeViewColumn *) data;
GtkTreeViewColumnPrivate *priv = column->priv;
g_return_val_if_fail (event != NULL, FALSE);
if (event->type == GDK_BUTTON_PRESS &&
priv->reorderable &&
((GdkEventButton *)event)->button == 1)
{
priv->maybe_reordered = TRUE;
gdk_window_get_pointer (gtk_button_get_event_window (GTK_BUTTON (widget)),
&priv->drag_x,
&priv->drag_y,
NULL);
gtk_widget_grab_focus (widget);
}
if (event->type == GDK_BUTTON_RELEASE ||
event->type == GDK_LEAVE_NOTIFY)
priv->maybe_reordered = FALSE;
if (event->type == GDK_MOTION_NOTIFY &&
priv->maybe_reordered &&
(gtk_drag_check_threshold (widget,
priv->drag_x,
priv->drag_y,
(gint) ((GdkEventMotion *)event)->x,
(gint) ((GdkEventMotion *)event)->y)))
{
priv->maybe_reordered = FALSE;
_gtk_tree_view_column_start_drag (GTK_TREE_VIEW (priv->tree_view), column,
event->motion.device);
return TRUE;
}
if (priv->clickable == FALSE)
{
switch (event->type)
{
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_MOTION_NOTIFY:
case GDK_BUTTON_RELEASE:
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
return TRUE;
default:
return FALSE;
}
}
return FALSE;
}
static void
gtk_tree_view_column_button_clicked (GtkWidget *widget, gpointer data)
{
g_signal_emit_by_name (data, "clicked");
}
static gboolean
gtk_tree_view_column_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling,
gpointer data)
{
GtkTreeViewColumn *column = (GtkTreeViewColumn *)data;
GtkTreeViewColumnPrivate *priv = column->priv;
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), FALSE);
_gtk_tree_view_set_focus_column (GTK_TREE_VIEW (priv->tree_view), column);
if (priv->clickable)
gtk_button_clicked (GTK_BUTTON (priv->button));
else if (gtk_widget_get_can_focus (priv->button))
gtk_widget_grab_focus (priv->button);
else
gtk_widget_grab_focus (priv->tree_view);
return TRUE;
}
static void
gtk_tree_view_model_sort_column_changed (GtkTreeSortable *sortable,
GtkTreeViewColumn *column)
{
GtkTreeViewColumnPrivate *priv = column->priv;
gint sort_column_id;
GtkSortType order;
if (gtk_tree_sortable_get_sort_column_id (sortable,
&sort_column_id,
&order))
{
if (sort_column_id == priv->sort_column_id)
{
gtk_tree_view_column_set_sort_indicator (column, TRUE);
gtk_tree_view_column_set_sort_order (column, order);
}
else
{
gtk_tree_view_column_set_sort_indicator (column, FALSE);
}
}
else
{
gtk_tree_view_column_set_sort_indicator (column, FALSE);
}
}
static void
gtk_tree_view_column_sort (GtkTreeViewColumn *tree_column,
gpointer data)
{
GtkTreeViewColumnPrivate *priv = tree_column->priv;
GtkTreeModel *model;
GtkTreeSortable *sortable;
gint sort_column_id;
GtkSortType order;
gboolean has_sort_column;
gboolean has_default_sort_func;
g_return_if_fail (priv->tree_view != NULL);
model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
sortable = GTK_TREE_SORTABLE (model);
has_sort_column =
gtk_tree_sortable_get_sort_column_id (sortable,
&sort_column_id,
&order);
has_default_sort_func =
gtk_tree_sortable_has_default_sort_func (sortable);
if (has_sort_column &&
sort_column_id == priv->sort_column_id)
{
if (order == GTK_SORT_ASCENDING)
gtk_tree_sortable_set_sort_column_id (sortable,
priv->sort_column_id,
GTK_SORT_DESCENDING);
else if (order == GTK_SORT_DESCENDING && has_default_sort_func)
gtk_tree_sortable_set_sort_column_id (sortable,
GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
GTK_SORT_ASCENDING);
else
gtk_tree_sortable_set_sort_column_id (sortable,
priv->sort_column_id,
GTK_SORT_ASCENDING);
}
else
{
gtk_tree_sortable_set_sort_column_id (sortable,
priv->sort_column_id,
GTK_SORT_ASCENDING);
}
}
static void
gtk_tree_view_column_setup_sort_column_id_callback (GtkTreeViewColumn *tree_column)
{
GtkTreeViewColumnPrivate *priv = tree_column->priv;
GtkTreeModel *model;
if (priv->tree_view == NULL)
return;
model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
if (model == NULL)
return;
if (GTK_IS_TREE_SORTABLE (model) &&
priv->sort_column_id != -1)
{
gint real_sort_column_id;
GtkSortType real_order;
if (priv->sort_column_changed_signal == 0)
priv->sort_column_changed_signal =
g_signal_connect (model, "sort-column-changed",
G_CALLBACK (gtk_tree_view_model_sort_column_changed),
tree_column);
if (gtk_tree_sortable_get_sort_column_id (GTK_TREE_SORTABLE (model),
&real_sort_column_id,
&real_order) &&
(real_sort_column_id == priv->sort_column_id))
{
gtk_tree_view_column_set_sort_indicator (tree_column, TRUE);
gtk_tree_view_column_set_sort_order (tree_column, real_order);
}
else
{
gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
}
}
}
static void
gtk_tree_view_column_context_changed (GtkCellAreaContext *context,
GParamSpec *pspec,
GtkTreeViewColumn *tree_column)
{
/* Here we want the column re-requested if the underlying context was
* actually reset for any reason, this can happen if the underlying
* area/cell configuration changes (i.e. cell packing properties
* or cell spacing and the like)
*
* Note that we block this handler while requesting for sizes
* so there is no need to check for the new context size being -1,
* we also block the handler when explicitly resetting the context
* so as to avoid some infinite stack recursion.
*/
if (!strcmp (pspec->name, "minimum-width") ||
!strcmp (pspec->name, "natural-width") ||
!strcmp (pspec->name, "minimum-height") ||
!strcmp (pspec->name, "natural-height"))
_gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
}
static void
gtk_tree_view_column_add_editable_callback (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellEditable *edit_widget,
GdkRectangle *cell_area,
const gchar *path_string,
gpointer user_data)
{
GtkTreeViewColumn *column = user_data;
GtkTreeViewColumnPrivate *priv = column->priv;
GtkTreePath *path;
if (priv->tree_view)
{
path = gtk_tree_path_new_from_string (path_string);
_gtk_tree_view_add_editable (GTK_TREE_VIEW (priv->tree_view),
column,
path,
edit_widget,
cell_area);
gtk_tree_path_free (path);
}
}
static void
gtk_tree_view_column_remove_editable_callback (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellEditable *edit_widget,
gpointer user_data)
{
GtkTreeViewColumn *column = user_data;
GtkTreeViewColumnPrivate *priv = column->priv;
if (priv->tree_view)
_gtk_tree_view_remove_editable (GTK_TREE_VIEW (priv->tree_view),
column,
edit_widget);
}
/* Exported Private Functions.
* These should only be called by gtktreeview.c or gtktreeviewcolumn.c
*/
void
_gtk_tree_view_column_realize_button (GtkTreeViewColumn *column)
{
GtkTreeViewColumnPrivate *priv = column->priv;
GtkAllocation allocation;
GtkTreeView *tree_view;
GdkWindowAttr attr;
guint attributes_mask;
gboolean rtl;
tree_view = (GtkTreeView *)priv->tree_view;
rtl = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (gtk_widget_get_realized (priv->tree_view));
g_return_if_fail (priv->button != NULL);
g_return_if_fail (_gtk_tree_view_get_header_window (tree_view) != NULL);
gtk_widget_set_parent_window (priv->button, _gtk_tree_view_get_header_window (tree_view));
attr.window_type = GDK_WINDOW_CHILD;
attr.wclass = GDK_INPUT_ONLY;
attr.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
attr.event_mask = gtk_widget_get_events (GTK_WIDGET (tree_view)) |
(GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_KEY_PRESS_MASK);
attributes_mask = GDK_WA_CURSOR | GDK_WA_X | GDK_WA_Y;
attr.cursor = gdk_cursor_new_for_display
(gdk_window_get_display (_gtk_tree_view_get_header_window (tree_view)), GDK_SB_H_DOUBLE_ARROW);
attr.y = 0;
attr.width = TREE_VIEW_DRAG_WIDTH;
attr.height = _gtk_tree_view_get_header_height (tree_view);
gtk_widget_get_allocation (priv->button, &allocation);
attr.x = (allocation.x + (rtl ? 0 : allocation.width)) - TREE_VIEW_DRAG_WIDTH / 2;
priv->window = gdk_window_new (_gtk_tree_view_get_header_window (tree_view),
&attr, attributes_mask);
gdk_window_set_user_data (priv->window, tree_view);
gtk_tree_view_column_update_button (column);
g_object_unref (attr.cursor);
}
void
_gtk_tree_view_column_unrealize_button (GtkTreeViewColumn *column)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (column != NULL);
priv = column->priv;
g_return_if_fail (priv->window != NULL);
gdk_window_set_user_data (priv->window, NULL);
gdk_window_destroy (priv->window);
priv->window = NULL;
}
void
_gtk_tree_view_column_unset_model (GtkTreeViewColumn *column,
GtkTreeModel *old_model)
{
GtkTreeViewColumnPrivate *priv = column->priv;
if (priv->sort_column_changed_signal)
{
g_signal_handler_disconnect (old_model,
priv->sort_column_changed_signal);
priv->sort_column_changed_signal = 0;
}
gtk_tree_view_column_set_sort_indicator (column, FALSE);
}
void
_gtk_tree_view_column_set_tree_view (GtkTreeViewColumn *column,
GtkTreeView *tree_view)
{
GtkTreeViewColumnPrivate *priv = column->priv;
g_assert (priv->tree_view == NULL);
priv->tree_view = GTK_WIDGET (tree_view);
gtk_tree_view_column_create_button (column);
priv->property_changed_signal =
g_signal_connect_swapped (tree_view,
"notify::model",
G_CALLBACK (gtk_tree_view_column_setup_sort_column_id_callback),
column);
gtk_tree_view_column_setup_sort_column_id_callback (column);
}
void
_gtk_tree_view_column_unset_tree_view (GtkTreeViewColumn *column)
{
GtkTreeViewColumnPrivate *priv = column->priv;
if (priv->tree_view && priv->button)
{
gtk_container_remove (GTK_CONTAINER (priv->tree_view), priv->button);
}
if (priv->property_changed_signal)
{
g_signal_handler_disconnect (priv->tree_view, priv->property_changed_signal);
priv->property_changed_signal = 0;
}
if (priv->sort_column_changed_signal)
{
g_signal_handler_disconnect (gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view)),
priv->sort_column_changed_signal);
priv->sort_column_changed_signal = 0;
}
priv->tree_view = NULL;
priv->button = NULL;
}
gboolean
_gtk_tree_view_column_has_editable_cell (GtkTreeViewColumn *column)
{
GtkTreeViewColumnPrivate *priv = column->priv;
gboolean ret = FALSE;
GList *list, *cells;
cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
for (list = cells; list; list = list->next)
{
GtkCellRenderer *cell = list->data;
GtkCellRendererMode mode;
g_object_get (cell, "mode", &mode, NULL);
if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
{
ret = TRUE;
break;
}
}
g_list_free (cells);
return ret;
}
/* gets cell being edited */
GtkCellRenderer *
_gtk_tree_view_column_get_edited_cell (GtkTreeViewColumn *column)
{
GtkTreeViewColumnPrivate *priv = column->priv;
return gtk_cell_area_get_edited_cell (priv->cell_area);
}
GtkCellRenderer *
_gtk_tree_view_column_get_cell_at_pos (GtkTreeViewColumn *column,
GdkRectangle *cell_area,
GdkRectangle *background_area,
gint x,
gint y)
{
GtkCellRenderer *match = NULL;
GtkTreeViewColumnPrivate *priv = column->priv;
/* If (x, y) is outside of the background area, immediately return */
if (x < background_area->x ||
x > background_area->x + background_area->width ||
y < background_area->y ||
y > background_area->y + background_area->height)
return NULL;
/* If (x, y) is inside the background area, clamp it to the cell_area
* so that a cell is still returned. The main reason for doing this
* (on the x axis) is for handling clicks in the indentation area
* (either at the left or right depending on RTL setting). Another
* reason is for handling clicks on the area where the focus rectangle
* is drawn (this is outside of cell area), this manifests itself
* mainly when a large setting is used for focus-line-width.
*/
if (x < cell_area->x)
x = cell_area->x;
else if (x > cell_area->x + cell_area->width)
x = cell_area->x + cell_area->width;
if (y < cell_area->y)
y = cell_area->y;
else if (y > cell_area->y + cell_area->height)
y = cell_area->y + cell_area->height;
match = gtk_cell_area_get_cell_at_position (priv->cell_area,
priv->cell_area_context,
priv->tree_view,
cell_area,
x, y,
NULL);
return match;
}
gboolean
_gtk_tree_view_column_is_blank_at_pos (GtkTreeViewColumn *column,
GdkRectangle *cell_area,
GdkRectangle *background_area,
gint x,
gint y)
{
GtkCellRenderer *match;
GdkRectangle cell_alloc, aligned_area, inner_area;
GtkTreeViewColumnPrivate *priv = column->priv;
match = _gtk_tree_view_column_get_cell_at_pos (column,
cell_area,
background_area,
x, y);
if (!match)
return FALSE;
gtk_cell_area_get_cell_allocation (priv->cell_area,
priv->cell_area_context,
priv->tree_view,
match,
cell_area,
&cell_alloc);
gtk_cell_area_inner_cell_area (priv->cell_area, priv->tree_view,
&cell_alloc, &inner_area);
gtk_cell_renderer_get_aligned_area (match, priv->tree_view, 0,
&inner_area, &aligned_area);
if (x < aligned_area.x ||
x > aligned_area.x + aligned_area.width ||
y < aligned_area.y ||
y > aligned_area.y + aligned_area.height)
return TRUE;
return FALSE;
}
/* Public Functions */
/**
* gtk_tree_view_column_new:
*
* Creates a new #GtkTreeViewColumn.
*
* Return value: A newly created #GtkTreeViewColumn.
**/
GtkTreeViewColumn *
gtk_tree_view_column_new (void)
{
GtkTreeViewColumn *tree_column;
tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, NULL);
return tree_column;
}
/**
* gtk_tree_view_column_new_with_area:
* @area: the #GtkCellArea that the newly created column should use to layout cells.
*
* Creates a new #GtkTreeViewColumn using @area to render it's cells.
*
* Return value: A newly created #GtkTreeViewColumn.
*
* Since: 3.0
*/
GtkTreeViewColumn *
gtk_tree_view_column_new_with_area (GtkCellArea *area)
{
GtkTreeViewColumn *tree_column;
tree_column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN, "cell-area", area, NULL);
return tree_column;
}
/**
* gtk_tree_view_column_new_with_attributes:
* @title: The title to set the header to.
* @cell: The #GtkCellRenderer.
* @Varargs: A %NULL-terminated list of attributes.
*
* Creates a new #GtkTreeViewColumn with a number of default values. This is
* equivalent to calling gtk_tree_view_column_set_title(),
* gtk_tree_view_column_pack_start(), and
* gtk_tree_view_column_set_attributes() on the newly created #GtkTreeViewColumn.
*
* Here's a simple example:
* |[
* enum { TEXT_COLUMN, COLOR_COLUMN, N_COLUMNS };
* ...
* {
* GtkTreeViewColumn *column;
* GtkCellRenderer *renderer = gtk_cell_renderer_text_new ();
*
* column = gtk_tree_view_column_new_with_attributes ("Title",
* renderer,
* "text", TEXT_COLUMN,
* "foreground", COLOR_COLUMN,
* NULL);
* }
* ]|
*
* Return value: A newly created #GtkTreeViewColumn.
**/
GtkTreeViewColumn *
gtk_tree_view_column_new_with_attributes (const gchar *title,
GtkCellRenderer *cell,
...)
{
GtkTreeViewColumn *retval;
va_list args;
retval = gtk_tree_view_column_new ();
gtk_tree_view_column_set_title (retval, title);
gtk_tree_view_column_pack_start (retval, cell, TRUE);
va_start (args, cell);
gtk_tree_view_column_set_attributesv (retval, cell, args);
va_end (args);
return retval;
}
/**
* gtk_tree_view_column_pack_start:
* @tree_column: A #GtkTreeViewColumn.
* @cell: The #GtkCellRenderer.
* @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
*
* Packs the @cell into the beginning of the column. If @expand is %FALSE, then
* the @cell is allocated no more space than it needs. Any unused space is divided
* evenly between cells for which @expand is %TRUE.
**/
void
gtk_tree_view_column_pack_start (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell,
gboolean expand)
{
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (tree_column), cell, expand);
}
/**
* gtk_tree_view_column_pack_end:
* @tree_column: A #GtkTreeViewColumn.
* @cell: The #GtkCellRenderer.
* @expand: %TRUE if @cell is to be given extra space allocated to @tree_column.
*
* Adds the @cell to end of the column. If @expand is %FALSE, then the @cell
* is allocated no more space than it needs. Any unused space is divided
* evenly between cells for which @expand is %TRUE.
**/
void
gtk_tree_view_column_pack_end (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell,
gboolean expand)
{
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (tree_column), cell, expand);
}
/**
* gtk_tree_view_column_clear:
* @tree_column: A #GtkTreeViewColumn
*
* Unsets all the mappings on all renderers on the @tree_column.
**/
void
gtk_tree_view_column_clear (GtkTreeViewColumn *tree_column)
{
gtk_cell_layout_clear (GTK_CELL_LAYOUT (tree_column));
}
/**
* gtk_tree_view_column_add_attribute:
* @tree_column: A #GtkTreeViewColumn.
* @cell_renderer: the #GtkCellRenderer to set attributes on
* @attribute: An attribute on the renderer
* @column: The column position on the model to get the attribute from.
*
* Adds an attribute mapping to the list in @tree_column. The @column is the
* column of the model to get a value from, and the @attribute is the
* parameter on @cell_renderer to be set from the value. So for example
* if column 2 of the model contains strings, you could have the
* "text" attribute of a #GtkCellRendererText get its values from
* column 2.
**/
void
gtk_tree_view_column_add_attribute (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell_renderer,
const gchar *attribute,
gint column)
{
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (tree_column),
cell_renderer, attribute, column);
}
static void
gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell_renderer,
va_list args)
{
GtkTreeViewColumnPrivate *priv = tree_column->priv;
gchar *attribute;
gint column;
attribute = va_arg (args, gchar *);
gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (priv->cell_area),
cell_renderer);
while (attribute != NULL)
{
column = va_arg (args, gint);
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (priv->cell_area),
cell_renderer, attribute, column);
attribute = va_arg (args, gchar *);
}
}
/**
* gtk_tree_view_column_set_attributes:
* @tree_column: A #GtkTreeViewColumn.
* @cell_renderer: the #GtkCellRenderer we're setting the attributes of
* @Varargs: A %NULL-terminated list of attributes.
*
* Sets the attributes in the list as the attributes of @tree_column.
* The attributes should be in attribute/column order, as in
* gtk_tree_view_column_add_attribute(). All existing attributes
* are removed, and replaced with the new attributes.
**/
void
gtk_tree_view_column_set_attributes (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell_renderer,
...)
{
va_list args;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell_renderer));
va_start (args, cell_renderer);
gtk_tree_view_column_set_attributesv (tree_column, cell_renderer, args);
va_end (args);
}
/**
* gtk_tree_view_column_set_cell_data_func:
* @tree_column: A #GtkTreeViewColumn
* @cell_renderer: A #GtkCellRenderer
* @func: The #GtkTreeViewColumnFunc to use.
* @func_data: The user data for @func.
* @destroy: The destroy notification for @func_data
*
* Sets the #GtkTreeViewColumnFunc to use for the column. This
* function is used instead of the standard attributes mapping for
* setting the column value, and should set the value of @tree_column's
* cell renderer as appropriate. @func may be %NULL to remove an
* older one.
**/
void
gtk_tree_view_column_set_cell_data_func (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell_renderer,
GtkTreeCellDataFunc func,
gpointer func_data,
GDestroyNotify destroy)
{
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (tree_column),
cell_renderer,
(GtkCellLayoutDataFunc)func,
func_data, destroy);
}
/**
* gtk_tree_view_column_clear_attributes:
* @tree_column: a #GtkTreeViewColumn
* @cell_renderer: a #GtkCellRenderer to clear the attribute mapping on.
*
* Clears all existing attributes previously set with
* gtk_tree_view_column_set_attributes().
**/
void
gtk_tree_view_column_clear_attributes (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell_renderer)
{
gtk_cell_layout_clear_attributes (GTK_CELL_LAYOUT (tree_column),
cell_renderer);
}
/**
* gtk_tree_view_column_set_spacing:
* @tree_column: A #GtkTreeViewColumn.
* @spacing: distance between cell renderers in pixels.
*
* Sets the spacing field of @tree_column, which is the number of pixels to
* place between cell renderers packed into it.
**/
void
gtk_tree_view_column_set_spacing (GtkTreeViewColumn *tree_column,
gint spacing)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (spacing >= 0);
priv = tree_column->priv;
gtk_cell_area_box_set_spacing (GTK_CELL_AREA_BOX (priv->cell_area),
spacing);
if (priv->tree_view)
_gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
}
/**
* gtk_tree_view_column_get_spacing:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the spacing of @tree_column.
*
* Return value: the spacing of @tree_column.
**/
gint
gtk_tree_view_column_get_spacing (GtkTreeViewColumn *tree_column)
{
GtkTreeViewColumnPrivate *priv;
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
priv = tree_column->priv;
return gtk_cell_area_box_get_spacing (GTK_CELL_AREA_BOX (priv->cell_area));
}
/* Options for manipulating the columns */
/**
* gtk_tree_view_column_set_visible:
* @tree_column: A #GtkTreeViewColumn.
* @visible: %TRUE if the @tree_column is visible.
*
* Sets the visibility of @tree_column.
**/
void
gtk_tree_view_column_set_visible (GtkTreeViewColumn *tree_column,
gboolean visible)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
visible = !! visible;
if (priv->visible == visible)
return;
priv->visible = visible;
if (priv->visible)
_gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "visible");
}
/**
* gtk_tree_view_column_get_visible:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns %TRUE if @tree_column is visible.
*
* Return value: whether the column is visible or not. If it is visible, then
* the tree will show the column.
**/
gboolean
gtk_tree_view_column_get_visible (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
return tree_column->priv->visible;
}
/**
* gtk_tree_view_column_set_resizable:
* @tree_column: A #GtkTreeViewColumn
* @resizable: %TRUE, if the column can be resized
*
* If @resizable is %TRUE, then the user can explicitly resize the column by
* grabbing the outer edge of the column button. If resizable is %TRUE and
* sizing mode of the column is #GTK_TREE_VIEW_COLUMN_AUTOSIZE, then the sizing
* mode is changed to #GTK_TREE_VIEW_COLUMN_GROW_ONLY.
**/
void
gtk_tree_view_column_set_resizable (GtkTreeViewColumn *tree_column,
gboolean resizable)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
resizable = !! resizable;
if (priv->resizable == resizable)
return;
priv->resizable = resizable;
if (resizable && priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
gtk_tree_view_column_set_sizing (tree_column, GTK_TREE_VIEW_COLUMN_GROW_ONLY);
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "resizable");
}
/**
* gtk_tree_view_column_get_resizable:
* @tree_column: A #GtkTreeViewColumn
*
* Returns %TRUE if the @tree_column can be resized by the end user.
*
* Return value: %TRUE, if the @tree_column can be resized.
**/
gboolean
gtk_tree_view_column_get_resizable (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
return tree_column->priv->resizable;
}
/**
* gtk_tree_view_column_set_sizing:
* @tree_column: A #GtkTreeViewColumn.
* @type: The #GtkTreeViewColumnSizing.
*
* Sets the growth behavior of @tree_column to @type.
**/
void
gtk_tree_view_column_set_sizing (GtkTreeViewColumn *tree_column,
GtkTreeViewColumnSizing type)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
if (type == priv->column_type)
return;
if (type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
gtk_tree_view_column_set_resizable (tree_column, FALSE);
priv->column_type = type;
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "sizing");
}
/**
* gtk_tree_view_column_get_sizing:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the current type of @tree_column.
*
* Return value: The type of @tree_column.
**/
GtkTreeViewColumnSizing
gtk_tree_view_column_get_sizing (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
return tree_column->priv->column_type;
}
/**
* gtk_tree_view_column_get_width:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the current size of @tree_column in pixels.
*
* Return value: The current width of @tree_column.
**/
gint
gtk_tree_view_column_get_width (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
return tree_column->priv->width;
}
gint
_gtk_tree_view_column_request_width (GtkTreeViewColumn *tree_column)
{
GtkTreeViewColumnPrivate *priv;
gint real_requested_width;
priv = tree_column->priv;
if (priv->use_resized_width)
{
real_requested_width = priv->resized_width;
}
else if (priv->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
{
real_requested_width = priv->fixed_width;
}
else if (gtk_tree_view_get_headers_visible (GTK_TREE_VIEW (priv->tree_view)))
{
gint button_request;
gint requested_width;
gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &requested_width, NULL);
requested_width += priv->padding;
gtk_widget_get_preferred_width (priv->button, &button_request, NULL);
real_requested_width = MAX (requested_width, button_request);
}
else
{
gint requested_width;
gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &requested_width, NULL);
requested_width += priv->padding;
real_requested_width = requested_width;
if (real_requested_width < 0)
real_requested_width = 0;
}
if (priv->min_width != -1)
real_requested_width = MAX (real_requested_width, priv->min_width);
if (priv->max_width != -1)
real_requested_width = MIN (real_requested_width, priv->max_width);
return real_requested_width;
}
void
_gtk_tree_view_column_allocate (GtkTreeViewColumn *tree_column,
int x_offset,
int width)
{
GtkTreeViewColumnPrivate *priv;
GtkAllocation allocation;
gboolean rtl;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
priv->width = width;
gtk_cell_area_context_allocate (priv->cell_area_context, priv->width - priv->padding, -1);
allocation.x = x_offset;
allocation.y = 0;
allocation.width = width;
allocation.height = _gtk_tree_view_get_header_height (GTK_TREE_VIEW (priv->tree_view));
gtk_widget_size_allocate (priv->button, &allocation);
if (priv->window)
{
rtl = (gtk_widget_get_direction (priv->tree_view) == GTK_TEXT_DIR_RTL);
gdk_window_move_resize (priv->window,
allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
allocation.y,
TREE_VIEW_DRAG_WIDTH, allocation.height);
}
g_object_notify (G_OBJECT (tree_column), "width");
}
/**
* gtk_tree_view_column_set_fixed_width:
* @tree_column: A #GtkTreeViewColumn.
* @fixed_width: The size to set @tree_column to. Must be greater than 0.
*
* Sets the size of the column in pixels. This is meaningful only if the sizing
* type is #GTK_TREE_VIEW_COLUMN_FIXED. The size of the column is clamped to
* the min/max width for the column. Please note that the min/max width of the
* column doesn't actually affect the "fixed_width" property of the widget, just
* the actual size when displayed.
**/
void
gtk_tree_view_column_set_fixed_width (GtkTreeViewColumn *tree_column,
gint fixed_width)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (fixed_width > 0);
priv = tree_column->priv;
priv->fixed_width = fixed_width;
priv->use_resized_width = FALSE;
if (priv->tree_view &&
gtk_widget_get_realized (priv->tree_view) &&
priv->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
{
gtk_widget_queue_resize (priv->tree_view);
}
g_object_notify (G_OBJECT (tree_column), "fixed-width");
}
/**
* gtk_tree_view_column_get_fixed_width:
* @tree_column: a #GtkTreeViewColumn
*
* Gets the fixed width of the column. This value is only meaning may not be
* the actual width of the column on the screen, just what is requested.
*
* Return value: the fixed width of the column
**/
gint
gtk_tree_view_column_get_fixed_width (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
return tree_column->priv->fixed_width;
}
/**
* gtk_tree_view_column_set_min_width:
* @tree_column: A #GtkTreeViewColumn.
* @min_width: The minimum width of the column in pixels, or -1.
*
* Sets the minimum width of the @tree_column. If @min_width is -1, then the
* minimum width is unset.
**/
void
gtk_tree_view_column_set_min_width (GtkTreeViewColumn *tree_column,
gint min_width)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (min_width >= -1);
priv = tree_column->priv;
if (min_width == priv->min_width)
return;
if (priv->visible &&
priv->tree_view != NULL &&
gtk_widget_get_realized (priv->tree_view))
{
if (min_width > priv->width)
gtk_widget_queue_resize (priv->tree_view);
}
priv->min_width = min_width;
g_object_freeze_notify (G_OBJECT (tree_column));
if (priv->max_width != -1 && priv->max_width < min_width)
{
priv->max_width = min_width;
g_object_notify (G_OBJECT (tree_column), "max-width");
}
g_object_notify (G_OBJECT (tree_column), "min-width");
g_object_thaw_notify (G_OBJECT (tree_column));
if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
_gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
tree_column);
}
/**
* gtk_tree_view_column_get_min_width:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the minimum width in pixels of the @tree_column, or -1 if no minimum
* width is set.
*
* Return value: The minimum width of the @tree_column.
**/
gint
gtk_tree_view_column_get_min_width (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
return tree_column->priv->min_width;
}
/**
* gtk_tree_view_column_set_max_width:
* @tree_column: A #GtkTreeViewColumn.
* @max_width: The maximum width of the column in pixels, or -1.
*
* Sets the maximum width of the @tree_column. If @max_width is -1, then the
* maximum width is unset. Note, the column can actually be wider than max
* width if it's the last column in a view. In this case, the column expands to
* fill any extra space.
**/
void
gtk_tree_view_column_set_max_width (GtkTreeViewColumn *tree_column,
gint max_width)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (max_width >= -1);
priv = tree_column->priv;
if (max_width == priv->max_width)
return;
if (priv->visible &&
priv->tree_view != NULL &&
gtk_widget_get_realized (priv->tree_view))
{
if (max_width != -1 && max_width < priv->width)
gtk_widget_queue_resize (priv->tree_view);
}
priv->max_width = max_width;
g_object_freeze_notify (G_OBJECT (tree_column));
if (max_width != -1 && max_width < priv->min_width)
{
priv->min_width = max_width;
g_object_notify (G_OBJECT (tree_column), "min-width");
}
g_object_notify (G_OBJECT (tree_column), "max-width");
g_object_thaw_notify (G_OBJECT (tree_column));
if (priv->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
_gtk_tree_view_column_autosize (GTK_TREE_VIEW (priv->tree_view),
tree_column);
}
/**
* gtk_tree_view_column_get_max_width:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the maximum width in pixels of the @tree_column, or -1 if no maximum
* width is set.
*
* Return value: The maximum width of the @tree_column.
**/
gint
gtk_tree_view_column_get_max_width (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
return tree_column->priv->max_width;
}
/**
* gtk_tree_view_column_clicked:
* @tree_column: a #GtkTreeViewColumn
*
* Emits the "clicked" signal on the column. This function will only work if
* @tree_column is clickable.
**/
void
gtk_tree_view_column_clicked (GtkTreeViewColumn *tree_column)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
if (priv->visible &&
priv->button &&
priv->clickable)
gtk_button_clicked (GTK_BUTTON (priv->button));
}
/**
* gtk_tree_view_column_set_title:
* @tree_column: A #GtkTreeViewColumn.
* @title: The title of the @tree_column.
*
* Sets the title of the @tree_column. If a custom widget has been set, then
* this value is ignored.
**/
void
gtk_tree_view_column_set_title (GtkTreeViewColumn *tree_column,
const gchar *title)
{
GtkTreeViewColumnPrivate *priv;
gchar *new_title;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
new_title = g_strdup (title);
g_free (priv->title);
priv->title = new_title;
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "title");
}
/**
* gtk_tree_view_column_get_title:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the title of the widget.
*
* Return value: the title of the column. This string should not be
* modified or freed.
**/
G_CONST_RETURN gchar *
gtk_tree_view_column_get_title (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
return tree_column->priv->title;
}
/**
* gtk_tree_view_column_set_expand:
* @tree_column: A #GtkTreeViewColumn
* @expand: %TRUE if the column should take available extra space, %FALSE if not
*
* Sets the column to take available extra space. This space is shared equally
* amongst all columns that have the expand set to %TRUE. If no column has this
* option set, then the last column gets all extra space. By default, every
* column is created with this %FALSE.
*
* Since: 2.4
**/
void
gtk_tree_view_column_set_expand (GtkTreeViewColumn *tree_column,
gboolean expand)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
expand = expand?TRUE:FALSE;
if (priv->expand == expand)
return;
priv->expand = expand;
if (priv->visible &&
priv->tree_view != NULL &&
gtk_widget_get_realized (priv->tree_view))
{
/* We want to continue using the original width of the
* column that includes additional space added by the user
* resizing the columns and possibly extra (expanded) space, which
* are not included in the resized width.
*/
priv->use_resized_width = FALSE;
gtk_widget_queue_resize (priv->tree_view);
}
g_object_notify (G_OBJECT (tree_column), "expand");
}
/**
* gtk_tree_view_column_get_expand:
* @tree_column: a #GtkTreeViewColumn
*
* Return %TRUE if the column expands to take any available space.
*
* Return value: %TRUE, if the column expands
*
* Since: 2.4
**/
gboolean
gtk_tree_view_column_get_expand (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
return tree_column->priv->expand;
}
/**
* gtk_tree_view_column_set_clickable:
* @tree_column: A #GtkTreeViewColumn.
* @clickable: %TRUE if the header is active.
*
* Sets the header to be active if @active is %TRUE. When the header is active,
* then it can take keyboard focus, and can be clicked.
**/
void
gtk_tree_view_column_set_clickable (GtkTreeViewColumn *tree_column,
gboolean clickable)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
clickable = !! clickable;
if (priv->clickable == clickable)
return;
priv->clickable = clickable;
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "clickable");
}
/**
* gtk_tree_view_column_get_clickable:
* @tree_column: a #GtkTreeViewColumn
*
* Returns %TRUE if the user can click on the header for the column.
*
* Return value: %TRUE if user can click the column header.
**/
gboolean
gtk_tree_view_column_get_clickable (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
return tree_column->priv->clickable;
}
/**
* gtk_tree_view_column_set_widget:
* @tree_column: A #GtkTreeViewColumn.
* @widget: (allow-none): A child #GtkWidget, or %NULL.
*
* Sets the widget in the header to be @widget. If widget is %NULL, then the
* header button is set with a #GtkLabel set to the title of @tree_column.
**/
void
gtk_tree_view_column_set_widget (GtkTreeViewColumn *tree_column,
GtkWidget *widget)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
priv = tree_column->priv;
if (widget)
g_object_ref_sink (widget);
if (priv->child)
g_object_unref (priv->child);
priv->child = widget;
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "widget");
}
/**
* gtk_tree_view_column_get_widget:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the #GtkWidget in the button on the column header.
* If a custom widget has not been set then %NULL is returned.
*
* Return value: (transfer none): The #GtkWidget in the column
* header, or %NULL
**/
GtkWidget *
gtk_tree_view_column_get_widget (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
return tree_column->priv->child;
}
/**
* gtk_tree_view_column_set_alignment:
* @tree_column: A #GtkTreeViewColumn.
* @xalign: The alignment, which is between [0.0 and 1.0] inclusive.
*
* Sets the alignment of the title or custom widget inside the column header.
* The alignment determines its location inside the button -- 0.0 for left, 0.5
* for center, 1.0 for right.
**/
void
gtk_tree_view_column_set_alignment (GtkTreeViewColumn *tree_column,
gfloat xalign)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
xalign = CLAMP (xalign, 0.0, 1.0);
if (priv->xalign == xalign)
return;
priv->xalign = xalign;
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "alignment");
}
/**
* gtk_tree_view_column_get_alignment:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the current x alignment of @tree_column. This value can range
* between 0.0 and 1.0.
*
* Return value: The current alignent of @tree_column.
**/
gfloat
gtk_tree_view_column_get_alignment (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0.5);
return tree_column->priv->xalign;
}
/**
* gtk_tree_view_column_set_reorderable:
* @tree_column: A #GtkTreeViewColumn
* @reorderable: %TRUE, if the column can be reordered.
*
* If @reorderable is %TRUE, then the column can be reordered by the end user
* dragging the header.
**/
void
gtk_tree_view_column_set_reorderable (GtkTreeViewColumn *tree_column,
gboolean reorderable)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
/* if (reorderable)
gtk_tree_view_column_set_clickable (tree_column, TRUE);*/
if (priv->reorderable == (reorderable?TRUE:FALSE))
return;
priv->reorderable = (reorderable?TRUE:FALSE);
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "reorderable");
}
/**
* gtk_tree_view_column_get_reorderable:
* @tree_column: A #GtkTreeViewColumn
*
* Returns %TRUE if the @tree_column can be reordered by the user.
*
* Return value: %TRUE if the @tree_column can be reordered by the user.
**/
gboolean
gtk_tree_view_column_get_reorderable (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
return tree_column->priv->reorderable;
}
/**
* gtk_tree_view_column_set_sort_column_id:
* @tree_column: a #GtkTreeViewColumn
* @sort_column_id: The @sort_column_id of the model to sort on.
*
* Sets the logical @sort_column_id that this column sorts on when this column
* is selected for sorting. Doing so makes the column header clickable.
**/
void
gtk_tree_view_column_set_sort_column_id (GtkTreeViewColumn *tree_column,
gint sort_column_id)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (sort_column_id >= -1);
priv = tree_column->priv;
if (priv->sort_column_id == sort_column_id)
return;
priv->sort_column_id = sort_column_id;
/* Handle unsetting the id */
if (sort_column_id == -1)
{
GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW (priv->tree_view));
if (priv->sort_clicked_signal)
{
g_signal_handler_disconnect (tree_column, priv->sort_clicked_signal);
priv->sort_clicked_signal = 0;
}
if (priv->sort_column_changed_signal)
{
g_signal_handler_disconnect (model, priv->sort_column_changed_signal);
priv->sort_column_changed_signal = 0;
}
gtk_tree_view_column_set_sort_order (tree_column, GTK_SORT_ASCENDING);
gtk_tree_view_column_set_sort_indicator (tree_column, FALSE);
gtk_tree_view_column_set_clickable (tree_column, FALSE);
g_object_notify (G_OBJECT (tree_column), "sort-column-id");
return;
}
gtk_tree_view_column_set_clickable (tree_column, TRUE);
if (! priv->sort_clicked_signal)
priv->sort_clicked_signal = g_signal_connect (tree_column,
"clicked",
G_CALLBACK (gtk_tree_view_column_sort),
NULL);
gtk_tree_view_column_setup_sort_column_id_callback (tree_column);
g_object_notify (G_OBJECT (tree_column), "sort-column-id");
}
/**
* gtk_tree_view_column_get_sort_column_id:
* @tree_column: a #GtkTreeViewColumn
*
* Gets the logical @sort_column_id that the model sorts on when this
* column is selected for sorting.
* See gtk_tree_view_column_set_sort_column_id().
*
* Return value: the current @sort_column_id for this column, or -1 if
* this column can't be used for sorting.
**/
gint
gtk_tree_view_column_get_sort_column_id (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
return tree_column->priv->sort_column_id;
}
/**
* gtk_tree_view_column_set_sort_indicator:
* @tree_column: a #GtkTreeViewColumn
* @setting: %TRUE to display an indicator that the column is sorted
*
* Call this function with a @setting of %TRUE to display an arrow in
* the header button indicating the column is sorted. Call
* gtk_tree_view_column_set_sort_order() to change the direction of
* the arrow.
*
**/
void
gtk_tree_view_column_set_sort_indicator (GtkTreeViewColumn *tree_column,
gboolean setting)
{
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
setting = setting != FALSE;
if (setting == tree_column->priv->show_sort_indicator)
return;
tree_column->priv->show_sort_indicator = setting;
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "sort-indicator");
}
/**
* gtk_tree_view_column_get_sort_indicator:
* @tree_column: a #GtkTreeViewColumn
*
* Gets the value set by gtk_tree_view_column_set_sort_indicator().
*
* Return value: whether the sort indicator arrow is displayed
**/
gboolean
gtk_tree_view_column_get_sort_indicator (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
return tree_column->priv->show_sort_indicator;
}
/**
* gtk_tree_view_column_set_sort_order:
* @tree_column: a #GtkTreeViewColumn
* @order: sort order that the sort indicator should indicate
*
* Changes the appearance of the sort indicator.
*
* This <emphasis>does not</emphasis> actually sort the model. Use
* gtk_tree_view_column_set_sort_column_id() if you want automatic sorting
* support. This function is primarily for custom sorting behavior, and should
* be used in conjunction with gtk_tree_sortable_set_sort_column() to do
* that. For custom models, the mechanism will vary.
*
* The sort indicator changes direction to indicate normal sort or reverse sort.
* Note that you must have the sort indicator enabled to see anything when
* calling this function; see gtk_tree_view_column_set_sort_indicator().
**/
void
gtk_tree_view_column_set_sort_order (GtkTreeViewColumn *tree_column,
GtkSortType order)
{
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
if (order == tree_column->priv->sort_order)
return;
tree_column->priv->sort_order = order;
gtk_tree_view_column_update_button (tree_column);
g_object_notify (G_OBJECT (tree_column), "sort-order");
}
/**
* gtk_tree_view_column_get_sort_order:
* @tree_column: a #GtkTreeViewColumn
*
* Gets the value set by gtk_tree_view_column_set_sort_order().
*
* Return value: the sort order the sort indicator is indicating
**/
GtkSortType
gtk_tree_view_column_get_sort_order (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
return tree_column->priv->sort_order;
}
/**
* gtk_tree_view_column_cell_set_cell_data:
* @tree_column: A #GtkTreeViewColumn.
* @tree_model: The #GtkTreeModel to to get the cell renderers attributes from.
* @iter: The #GtkTreeIter to to get the cell renderer's attributes from.
* @is_expander: %TRUE, if the row has children
* @is_expanded: %TRUE, if the row has visible children
*
* Sets the cell renderer based on the @tree_model and @iter. That is, for
* every attribute mapping in @tree_column, it will get a value from the set
* column on the @iter, and use that value to set the attribute on the cell
* renderer. This is used primarily by the #GtkTreeView.
**/
void
gtk_tree_view_column_cell_set_cell_data (GtkTreeViewColumn *tree_column,
GtkTreeModel *tree_model,
GtkTreeIter *iter,
gboolean is_expander,
gboolean is_expanded)
{
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
if (tree_model == NULL)
return;
gtk_cell_area_apply_attributes (tree_column->priv->cell_area, tree_model, iter,
is_expander, is_expanded);
}
/**
* gtk_tree_view_column_cell_get_size:
* @tree_column: A #GtkTreeViewColumn.
* @cell_area: (allow-none): The area a cell in the column will be allocated, or %NULL
* @x_offset: (allow-none): location to return x offset of a cell relative to @cell_area, or %NULL
* @y_offset: (allow-none): location to return y offset of a cell relative to @cell_area, or %NULL
* @width: (allow-none): location to return width needed to render a cell, or %NULL
* @height: (allow-none): location to return height needed to render a cell, or %NULL
*
* Obtains the width and height needed to render the column. This is used
* primarily by the #GtkTreeView.
**/
void
gtk_tree_view_column_cell_get_size (GtkTreeViewColumn *tree_column,
const GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height)
{
GtkTreeViewColumnPrivate *priv;
gint min_width = 0, min_height = 0;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
priv = tree_column->priv;
g_signal_handler_block (priv->cell_area_context,
priv->context_changed_signal);
gtk_cell_area_get_preferred_width (priv->cell_area,
priv->cell_area_context,
priv->tree_view,
NULL, NULL);
gtk_cell_area_context_get_preferred_width (priv->cell_area_context, &min_width, NULL);
gtk_cell_area_get_preferred_height_for_width (priv->cell_area,
priv->cell_area_context,
priv->tree_view,
min_width,
&min_height,
NULL);
g_signal_handler_unblock (priv->cell_area_context,
priv->context_changed_signal);
if (height)
* height = min_height;
if (width)
* width = min_width;
}
/**
* gtk_tree_view_column_cell_render:
* @tree_column: A #GtkTreeViewColumn.
* @cr: cairo context to draw to
* @background_area: entire cell area (including tree expanders and maybe padding on the sides)
* @cell_area: area normally rendered by a cell renderer
* @flags: flags that affect rendering
*
* Renders the cell contained by #tree_column. This is used primarily by the
* #GtkTreeView.
**/
void
_gtk_tree_view_column_cell_render (GtkTreeViewColumn *tree_column,
cairo_t *cr,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
guint flags,
gboolean draw_focus)
{
GtkTreeViewColumnPrivate *priv;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (cr != NULL);
g_return_if_fail (background_area != NULL);
g_return_if_fail (cell_area != NULL);
priv = tree_column->priv;
cairo_save (cr);
gtk_cell_area_render (priv->cell_area, priv->cell_area_context,
priv->tree_view, cr,
background_area, cell_area, flags,
draw_focus);
cairo_restore (cr);
}
gboolean
_gtk_tree_view_column_cell_event (GtkTreeViewColumn *tree_column,
GdkEvent *event,
const GdkRectangle *cell_area,
guint flags)
{
GtkTreeViewColumnPrivate *priv;
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
priv = tree_column->priv;
return gtk_cell_area_event (priv->cell_area,
priv->cell_area_context,
priv->tree_view,
event,
cell_area,
flags);
}
/**
* gtk_tree_view_column_cell_is_visible:
* @tree_column: A #GtkTreeViewColumn
*
* Returns %TRUE if any of the cells packed into the @tree_column are visible.
* For this to be meaningful, you must first initialize the cells with
* gtk_tree_view_column_cell_set_cell_data()
*
* Return value: %TRUE, if any of the cells packed into the @tree_column are currently visible
**/
gboolean
gtk_tree_view_column_cell_is_visible (GtkTreeViewColumn *tree_column)
{
GList *list;
GList *cells;
GtkTreeViewColumnPrivate *priv;
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
priv = tree_column->priv;
cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (priv->cell_area));
for (list = cells; list; list = list->next)
{
if (gtk_cell_renderer_get_visible (list->data))
{
g_list_free (cells);
return TRUE;
}
}
g_list_free (cells);
return FALSE;
}
/**
* gtk_tree_view_column_focus_cell:
* @tree_column: A #GtkTreeViewColumn
* @cell: A #GtkCellRenderer
*
* Sets the current keyboard focus to be at @cell, if the column contains
* 2 or more editable and activatable cells.
*
* Since: 2.2
**/
void
gtk_tree_view_column_focus_cell (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell)
{
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
gtk_cell_area_set_focus_cell (tree_column->priv->cell_area, cell);
}
void
_gtk_tree_view_column_cell_set_dirty (GtkTreeViewColumn *tree_column,
gboolean install_handler)
{
GtkTreeViewColumnPrivate *priv = tree_column->priv;
priv->dirty = TRUE;
priv->padding = 0;
priv->width = 0;
/* Issue a manual reset on the context to have all
* sizes re-requested for the context.
*/
g_signal_handler_block (priv->cell_area_context,
priv->context_changed_signal);
gtk_cell_area_context_reset (priv->cell_area_context);
g_signal_handler_unblock (priv->cell_area_context,
priv->context_changed_signal);
if (priv->tree_view &&
gtk_widget_get_realized (priv->tree_view))
{
_gtk_tree_view_install_mark_rows_col_dirty (GTK_TREE_VIEW (priv->tree_view), install_handler);
gtk_widget_queue_resize (priv->tree_view);
}
}
gboolean
_gtk_tree_view_column_cell_get_dirty (GtkTreeViewColumn *tree_column)
{
return tree_column->priv->dirty;
}
/**
* gtk_tree_view_column_cell_get_position:
* @tree_column: a #GtkTreeViewColumn
* @cell_renderer: a #GtkCellRenderer
* @x_offset: return location for the horizontal position of @cell within
* @tree_column, may be %NULL
* @width: return location for the width of @cell, may be %NULL
*
* Obtains the horizontal position and size of a cell in a column. If the
* cell is not found in the column, @start_pos and @width are not changed and
* %FALSE is returned.
*
* Return value: %TRUE if @cell belongs to @tree_column.
*/
gboolean
gtk_tree_view_column_cell_get_position (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell_renderer,
gint *x_offset,
gint *width)
{
GtkTreeViewColumnPrivate *priv;
GdkRectangle cell_area;
GdkRectangle allocation;
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell_renderer), FALSE);
priv = tree_column->priv;
gtk_tree_view_get_background_area (GTK_TREE_VIEW (priv->tree_view),
NULL, tree_column, &cell_area);
gtk_cell_area_get_cell_allocation (priv->cell_area,
priv->cell_area_context,
priv->tree_view,
cell_renderer,
&cell_area,
&allocation);
if (x_offset)
{
GdkRectangle button_allocation;
/* Retrieve column offset */
gtk_widget_get_allocation (priv->button, &button_allocation);
*x_offset = allocation.x - button_allocation.x;
}
if (width)
*width = allocation.width;
return TRUE;
}
/**
* gtk_tree_view_column_queue_resize:
* @tree_column: A #GtkTreeViewColumn
*
* Flags the column, and the cell renderers added to this column, to have
* their sizes renegotiated.
*
* Since: 2.8
**/
void
gtk_tree_view_column_queue_resize (GtkTreeViewColumn *tree_column)
{
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
if (tree_column->priv->tree_view)
_gtk_tree_view_column_cell_set_dirty (tree_column, TRUE);
}
/**
* gtk_tree_view_column_get_tree_view:
* @tree_column: A #GtkTreeViewColumn
*
* Returns the #GtkTreeView wherein @tree_column has been inserted.
* If @column is currently not inserted in any tree view, %NULL is
* returned.
*
* Return value: (transfer none): The tree view wherein @column has
* been inserted if any, %NULL otherwise.
*
* Since: 2.12
*/
GtkWidget *
gtk_tree_view_column_get_tree_view (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
return tree_column->priv->tree_view;
}
/**
* gtk_tree_view_column_get_button:
* @tree_column: A #GtkTreeViewColumn
*
* Returns the button used in the treeview column header
*
* Return value: (transfer none): The button for the column header.
*
* Since: 3.0
*/
GtkWidget *
gtk_tree_view_column_get_button (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
return tree_column->priv->button;
}
GdkWindow *
_gtk_tree_view_column_get_window (GtkTreeViewColumn *column)
{
return column->priv->window;
}
void
_gtk_tree_view_column_push_padding (GtkTreeViewColumn *column,
gint padding)
{
column->priv->padding = MAX (column->priv->padding, padding);
}
gint
_gtk_tree_view_column_get_requested_width (GtkTreeViewColumn *column)
{
gint requested_width;
gtk_cell_area_context_get_preferred_width (column->priv->cell_area_context, &requested_width, NULL);
return requested_width + column->priv->padding;
}
void
_gtk_tree_view_column_set_resized_width (GtkTreeViewColumn *column,
gint width)
{
column->priv->resized_width = width;
}
gint
_gtk_tree_view_column_get_resized_width (GtkTreeViewColumn *column)
{
return column->priv->resized_width;
}
void
_gtk_tree_view_column_set_use_resized_width (GtkTreeViewColumn *column,
gboolean use_resized_width)
{
column->priv->use_resized_width = use_resized_width;
}
gboolean
_gtk_tree_view_column_get_use_resized_width (GtkTreeViewColumn *column)
{
return column->priv->use_resized_width;
}
gint
_gtk_tree_view_column_get_drag_x (GtkTreeViewColumn *column)
{
return column->priv->drag_x;
}
GtkCellAreaContext *
_gtk_tree_view_column_get_context (GtkTreeViewColumn *column)
{
return column->priv->cell_area_context;
}
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