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gtk2/gtk/gtktreeviewcolumn.c
Havoc Pennington e248e4e79e sync to tree changes 
2001-01-19  Havoc Pennington  <hp@redhat.com>

	* demos/gtk-demo/main.c (button_press_event_cb): sync to tree changes

	* gtk/gtkrbtree.c (_gtk_rbtree_node_find_offset): fix this
	function

	* gtk/gtktreeviewcolumn.c (gtk_tree_view_column_set_widget):
	implement

	* gtk/gtktreeview.c (gtk_tree_view_move_to): rename
	scroll_to_cell, matches TextView scroll functions better
	(gtk_tree_view_tree_to_widget_coords): new function
	(gtk_tree_view_widget_to_tree_coords): new function
	(gtk_tree_view_get_visible_rect): new function
	(gtk_tree_view_get_path_at_pos): accept negative coordinates
	(gtk_tree_view_draw_node_focus_rect): new function moved from
	draw_focus, also, use width of bin_window as width of the focus
	rect
	(gtk_tree_view_expand_row): fix bug where it didn't recognize
	already-expanded rows
	(gtk_tree_view_get_cell_rect): new function
	(gtk_tree_view_get_path_at_pos): return the click position
	relative to the passed-in cell
	(gtk_tree_view_set_expander_column): new function

	* configure.in: remove gtk-config-2.0 chmod

	* gtk/gtktextview.c (gtk_text_view_drag_motion): small cleanups,
	and properly handle drags with targets we don't understand
	(gtk_text_view_drag_end): don't stop scrolling, the source isn't
	scrolling anyway
	(gtk_text_view_drag_drop): stop scrolling here though, and set the
	mark invisible

	* gtk/gtkdnd.c (gtk_drag_dest_find_target): export as a public
	function
	(gtk_drag_dest_get_target_list): new function
	(gtk_drag_dest_set_target_list): new function

	* gtk/gtktreeview.c: Add a bunch of drag-and-drop implementation

	* gtk/gtktreeprivate.h (struct _GtkTreeViewPrivate): add fields
	related to drag-and-drop
2001-01-19 22:39:19 +00:00

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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 "gtktreeviewcolumn.h"
#include "gtktreeprivate.h"
#include "gtksignal.h"
#include "gtkbutton.h"
#include "gtkalignment.h"
#include "gtklabel.h"
#include "gtkintl.h"
enum
{
PROP_0,
PROP_CELL_RENDERER,
PROP_VISIBLE,
PROP_SIZING,
PROP_WIDTH,
PROP_MIN_WIDTH,
PROP_MAX_WIDTH,
PROP_TITLE,
PROP_CLICKABLE,
PROP_WIDGET,
PROP_JUSTIFICATION
};
enum
{
CLICKED,
LAST_SIGNAL
};
static void gtk_tree_view_column_init (GtkTreeViewColumn *tree_column);
static void gtk_tree_view_column_class_init (GtkTreeViewColumnClass *klass);
static void gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
va_list args);
static void gtk_real_tree_column_clicked (GtkTreeViewColumn *tree_column);
static void gtk_tree_view_column_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec,
const gchar *trailer);
static void gtk_tree_view_column_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer);
static GtkObjectClass *parent_class = NULL;
static guint tree_column_signals[LAST_SIGNAL] = { 0 };
GtkType
gtk_tree_view_column_get_type (void)
{
static GtkType tree_column_type = 0;
if (!tree_column_type)
{
static const GTypeInfo tree_column_info =
{
sizeof (GtkTreeViewColumnClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_tree_view_column_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkTreeViewColumn),
0,
(GInstanceInitFunc) gtk_tree_view_column_init,
};
tree_column_type = g_type_register_static (GTK_TYPE_OBJECT, "GtkTreeViewColumn", &tree_column_info, 0);
}
return tree_column_type;
}
static void
gtk_tree_view_column_class_init (GtkTreeViewColumnClass *class)
{
GObjectClass *object_class;
object_class = (GObjectClass*) class;
parent_class = g_type_class_peek_parent (class);
class->clicked = gtk_real_tree_column_clicked;
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_newc ("clicked",
GTK_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTreeViewColumnClass, clicked),
NULL,
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
g_object_class_install_property (object_class,
PROP_CELL_RENDERER,
g_param_spec_object ("cell_renderer",
_("Cell renderer"),
_("Cell renderer object to use for rendering the cell"),
GTK_TYPE_CELL_RENDERER,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_VISIBLE,
g_param_spec_boolean ("visible",
_("Visible"),
_("Whether to display the colomn"),
TRUE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_SIZING,
g_param_spec_enum ("sizing",
_("Sizing"),
_("Resize mode of the column"),
GTK_TYPE_TREE_VIEW_COLUMN_SIZING,
GTK_TREE_VIEW_COLUMN_AUTOSIZE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_WIDTH,
g_param_spec_int ("width",
_("Width"),
_("Current width of the column"),
1,
G_MAXINT,
1, /* not useful */
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_MIN_WIDTH,
g_param_spec_int ("min_width",
_("Minimum Width"),
_("Minimum allowed width of the column"),
-1,
G_MAXINT,
1,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_MAX_WIDTH,
g_param_spec_int ("max_width",
_("Maximum Width"),
_("Maximum allowed width of the column"),
-1,
G_MAXINT,
G_MAXINT,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_TITLE,
g_param_spec_string ("title",
_("Title"),
_("Title to appear in column header"),
"",
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_CLICKABLE,
g_param_spec_boolean ("clickable",
_("Clickable"),
_("Whether the header can be clicked"),
TRUE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_WIDGET,
g_param_spec_object ("widget",
_("Widget"),
_("Widget to put in column header button instead of column title"),
GTK_TYPE_WIDGET,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_JUSTIFICATION,
g_param_spec_enum ("justification",
_("Justification"),
_("Justification of the column"),
GTK_TYPE_JUSTIFICATION,
GTK_JUSTIFY_LEFT,
G_PARAM_READABLE | G_PARAM_WRITABLE));
}
static void
gtk_tree_view_column_init (GtkTreeViewColumn *tree_column)
{
tree_column->button = NULL;
tree_column->justification = GTK_JUSTIFY_LEFT;
tree_column->width = 1;
tree_column->min_width = -1;
tree_column->max_width = -1;
tree_column->cell = NULL;
tree_column->attributes = NULL;
tree_column->column_type = GTK_TREE_VIEW_COLUMN_AUTOSIZE;
tree_column->visible = TRUE;
tree_column->button_active = FALSE;
tree_column->dirty = TRUE;
}
static void
gtk_tree_view_column_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec,
const gchar *trailer)
{
GtkTreeViewColumn *tree_column;
tree_column = GTK_TREE_VIEW_COLUMN (object);
switch (prop_id)
{
case PROP_CELL_RENDERER:
gtk_tree_view_column_set_cell_renderer (tree_column,
(GtkCellRenderer*)
g_value_get_object (value));
break;
case PROP_VISIBLE:
gtk_tree_view_column_set_visible (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_WIDTH:
gtk_tree_view_column_set_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_TITLE:
gtk_tree_view_column_set_title (tree_column,
g_value_get_string (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_JUSTIFICATION:
gtk_tree_view_column_set_justification (tree_column,
g_value_get_enum (value));
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,
const gchar *trailer)
{
GtkTreeViewColumn *tree_column;
tree_column = GTK_TREE_VIEW_COLUMN (object);
switch (prop_id)
{
case PROP_CELL_RENDERER:
g_value_set_object (value, (GObject*) tree_column->cell);
break;
case PROP_VISIBLE:
g_value_set_boolean (value, tree_column->visible);
break;
case PROP_SIZING:
g_value_set_enum (value, tree_column->column_type);
break;
case PROP_WIDTH:
g_value_set_int (value, tree_column->width);
break;
case PROP_MIN_WIDTH:
g_value_set_int (value, tree_column->min_width);
break;
case PROP_MAX_WIDTH:
g_value_set_int (value, tree_column->max_width);
break;
case PROP_TITLE:
g_value_set_string (value, tree_column->title);
break;
case PROP_CLICKABLE:
g_value_set_boolean (value, tree_column->button_active);
break;
case PROP_WIDGET:
g_warning ("FIXME");
break;
case PROP_JUSTIFICATION:
g_value_set_enum (value, tree_column->justification);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* used to make the buttons 'unclickable' */
static gint
gtk_tree_view_passive_func (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
g_return_val_if_fail (event != NULL, FALSE);
switch (event->type)
{
case GDK_MOTION_NOTIFY:
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
return TRUE;
default:
break;
}
return FALSE;
}
static void
gtk_real_tree_column_clicked (GtkTreeViewColumn *tree_column)
{
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
}
/**
* gtk_tree_view_column_new:
*
* Creates a new #GtkTreeViewColumn.
*
* Return value: A newly created #GtkTreeViewColumn.
**/
GtkTreeViewColumn *
gtk_tree_view_column_new (void)
{
GtkTreeViewColumn *retval;
retval = GTK_TREE_VIEW_COLUMN (gtk_type_new (GTK_TYPE_TREE_COLUMN));
return retval;
}
/**
* 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_set_cell_renderer, and
* @gtk_tree_view_column_set_attributes on the newly created #GtkTreeViewColumn.
*
* Return value: A newly created #GtkTreeViewColumn.
**/
GtkTreeViewColumn *
gtk_tree_view_column_new_with_attributes (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_set_cell_renderer (retval, cell);
va_start (args, cell);
gtk_tree_view_column_set_attributesv (retval, args);
va_end (args);
return retval;
}
/**
* gtk_tree_view_column_set_cell_renderer:
* @tree_column: A #GtkTreeViewColumn.
* @cell: The #GtkCellRenderer, or NULL.
*
* Sets the cell renderer of the @tree_column. If there is a cell
* renderer already set, then it is removed. If @cell is NULL, then
* the cell renderer is unset.
**/
void
gtk_tree_view_column_set_cell_renderer (GtkTreeViewColumn *tree_column,
GtkCellRenderer *cell)
{
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
if (cell)
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
if (cell)
g_object_ref (G_OBJECT (cell));
if (tree_column->cell)
g_object_unref (G_OBJECT (tree_column->cell));
tree_column->cell = cell;
g_object_notify (G_OBJECT (tree_column), "cell_renderer");
}
/**
* gtk_tree_view_column_add_attribute:
* @tree_column: A #GtkTreeViewColumn.
* @attribute: An attribute on the columns cell
* @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 position on the model to get a value from, and the @attribute is the
* parameter on the @tree_column's cell renderer to set that value to.
**/
void
gtk_tree_view_column_add_attribute (GtkTreeViewColumn *tree_column,
gchar *attribute,
gint column)
{
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
tree_column->attributes = g_slist_prepend (tree_column->attributes,
GINT_TO_POINTER (column));
tree_column->attributes = g_slist_prepend (tree_column->attributes,
g_strdup (attribute));
}
static void
gtk_tree_view_column_set_attributesv (GtkTreeViewColumn *tree_column,
va_list args)
{
gchar *attribute;
gint column;
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
attribute = va_arg (args, gchar *);
gtk_tree_view_column_clear_attributes (tree_column);
while (attribute != NULL)
{
column = va_arg (args, gint);
gtk_tree_view_column_add_attribute (tree_column,
attribute,
column);
attribute = va_arg (args, gchar *);
}
}
/**
* gtk_tree_view_column_set_attributes:
* @tree_column: A #GtkTreeViewColumn.
* @Varargs: A NULL terminated listing 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,
...)
{
va_list args;
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
va_start (args, tree_column);
gtk_tree_view_column_set_attributesv (tree_column, args);
va_end (args);
}
/**
* gtk_tree_view_column_clear_attributes:
* @tree_column: a #GtkTreeViewColumn
*
* Clears all existing attributes previously set with
* gtk_tree_view_column_set_attributes().
**/
void
gtk_tree_view_column_clear_attributes (GtkTreeViewColumn *tree_column)
{
GSList *list;
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
list = tree_column->attributes;
while (list && list->next)
{
g_free (list->data);
list = list->next->next;
}
g_slist_free (tree_column->attributes);
tree_column->attributes = NULL;
}
/**
* gtk_tree_view_column_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.
*
* Sets the cell renderer based on the @tree_model and @tree_node. That is, for
* every attribute mapping in @tree_column, it will get a value from the set
* column on the @tree_node, and use that value to set the attribute on the cell
* renderer.
**/
void
gtk_tree_view_column_set_cell_data (GtkTreeViewColumn *tree_column,
GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GSList *list;
GValue value = { 0, };
GObject *cell;
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (tree_column->cell != NULL);
if (tree_model == NULL)
return;
if (tree_column->func && (* tree_column->func) (tree_column,
tree_model,
iter,
tree_column->func_data))
return;
cell = (GObject *) tree_column->cell;
list = tree_column->attributes;
while (list && list->next)
{
gtk_tree_model_get_value (tree_model, iter,
GPOINTER_TO_INT (list->next->data),
&value);
g_object_set_property (cell, (gchar *) list->data, &value);
g_value_unset (&value);
list = list->next->next;
}
}
/* 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)
{
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
visible = !! visible;
if (tree_column->visible == visible)
return;
tree_column->visible = visible;
if (visible)
{
gtk_widget_show (tree_column->button);
if (GTK_WIDGET_REALIZED (tree_column->tree_view))
gdk_window_show (tree_column->window);
}
else
{
gtk_widget_hide (tree_column->button);
if (GTK_WIDGET_REALIZED (tree_column->tree_view))
gdk_window_hide (tree_column->window);
}
if (GTK_WIDGET_REALIZED (tree_column->tree_view))
_gtk_tree_view_set_size (GTK_TREE_VIEW (tree_column->tree_view), -1, -1);
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 (tree_column != NULL, FALSE);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), FALSE);
return tree_column->visible;
}
/**
* 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)
{
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
if (type == tree_column->column_type)
return;
tree_column->column_type = type;
switch (type)
{
case GTK_TREE_VIEW_COLUMN_AUTOSIZE:
tree_column->dirty = TRUE;
case GTK_TREE_VIEW_COLUMN_FIXED:
if (GTK_WIDGET_REALIZED (tree_column->tree_view))
gdk_window_hide (tree_column->window);
break;
default:
if (GTK_WIDGET_REALIZED (tree_column->tree_view))
{
gdk_window_show (tree_column->window);
gdk_window_raise (tree_column->window);
}
break;
}
gtk_widget_queue_resize (tree_column->tree_view);
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.
**/
gint
gtk_tree_view_column_get_sizing (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (tree_column != NULL, 0);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
return tree_column->column_type;
}
/**
* gtk_tree_view_column_get_size:
* @tree_column: A #GtkTreeViewColumn.
*
* Returns the current size of the @tree_column in pixels.
*
* Return value: The current size of the @tree_column.
**/
gint
gtk_tree_view_column_get_size (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (tree_column != NULL, 0);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), 0);
return tree_column->width;
}
/**
* gtk_tree_view_column_set_width:
* @tree_column: A #GtkTreeViewColumn.
* @size: The size to set the @tree_column to.
*
* Sets the size of the column in pixels, unless the the column type is
* #GTK_TREE_VIEW_COLUMN_AUTOSIZE. In this case, the value is discarded as the
* size of the column is based on the calculated width of the column. The
* width is clamped to the min/max width for the column.
**/
void
gtk_tree_view_column_set_width (GtkTreeViewColumn *tree_column,
gint size)
{
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (size > 0);
if (tree_column->min_width != -1 &&
size < tree_column->min_width)
size = tree_column->min_width;
else if (tree_column->max_width != -1 &&
size > tree_column->max_width)
size = tree_column->max_width;
if (tree_column->width == size)
return;
tree_column->width = size;
if (GTK_WIDGET_REALIZED (tree_column->tree_view))
gtk_widget_queue_resize (tree_column->tree_view);
g_object_notify (G_OBJECT (tree_column), "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)
{
gint real_min_width;
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (min_width >= -1);
if (min_width == tree_column->min_width)
return;
real_min_width = (tree_column->min_width == -1) ?
tree_column->button->requisition.width : tree_column->min_width;
/* We want to queue a resize if the either the old min_size or the
* new min_size determined the size of the column */
if (GTK_WIDGET_REALIZED (tree_column->tree_view) &&
((tree_column->min_width > tree_column->width) ||
(tree_column->min_width == -1 &&
tree_column->button->requisition.width > tree_column->width) ||
(min_width > tree_column->width) ||
(min_width == -1 &&
tree_column->button->requisition.width > tree_column->width)))
gtk_widget_queue_resize (tree_column->tree_view);
if (tree_column->max_width != -1 &&
tree_column->max_width < real_min_width)
tree_column->max_width = real_min_width;
tree_column->min_width = min_width;
g_object_notify (G_OBJECT (tree_column), "min_width");
}
/**
* 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 (tree_column != NULL, -1);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
return tree_column->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.
**/
void
gtk_tree_view_column_set_max_width (GtkTreeViewColumn *tree_column,
gint max_width)
{
gint real_min_width;
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (max_width >= -1);
if (max_width == tree_column->max_width)
return;
real_min_width = tree_column->min_width == -1 ?
tree_column->button->requisition.width : tree_column->min_width;
if (GTK_WIDGET_REALIZED (tree_column->tree_view) &&
((tree_column->max_width < tree_column->width) ||
(max_width != -1 && max_width < tree_column->width)))
gtk_widget_queue_resize (tree_column->tree_view);
tree_column->max_width = max_width;
if (real_min_width > max_width)
tree_column->min_width = max_width;
g_object_notify (G_OBJECT (tree_column), "max_width");
}
/**
* 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 (tree_column != NULL, -1);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), -1);
return tree_column->max_width;
}
/**
* gtk_tree_view_column_clicked:
* @tree_column: a #GtkTreeViewColumn
*
* Emits the "clicked" signal on the column.
**/
void
gtk_tree_view_column_clicked (GtkTreeViewColumn *tree_column)
{
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
gtk_signal_emit (GTK_OBJECT (tree_column), tree_column_signals[CLICKED]);
}
static void
update_button_contents (GtkTreeViewColumn *tree_column)
{
if (tree_column->button)
{
GtkWidget *current_child = GTK_BIN (GTK_BIN (tree_column->button)->child)->child;
if (tree_column->child)
{
if (current_child != tree_column->child)
{
gtk_container_remove (GTK_CONTAINER (tree_column->button),
current_child);
gtk_container_add (GTK_CONTAINER (tree_column->button),
tree_column->child);
}
}
else
{
if (current_child == NULL)
{
current_child = gtk_label_new (NULL);
gtk_widget_show (current_child);
gtk_container_add (GTK_CONTAINER (tree_column->button),
current_child);
}
g_return_if_fail (GTK_IS_LABEL (current_child));
if (tree_column->title)
gtk_label_set_text (GTK_LABEL (current_child),
tree_column->title);
else
gtk_label_set_text (GTK_LABEL (current_child),
"");
}
}
}
/**
* 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,
gchar *title)
{
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_free (tree_column->title);
if (title)
tree_column->title = g_strdup (title);
else
tree_column->title = NULL;
update_button_contents (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. This value should not be modified.
*
* Return value: the title of the column.
**/
gchar *
gtk_tree_view_column_get_title (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (tree_column != NULL, NULL);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
return tree_column->title;
}
/**
* gtk_tree_view_column_set_clickable:
* @tree_column: A #GtkTreeViewColumn.
* @active: 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 active)
{
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
if (!tree_column->button)
return;
if (tree_column->button_active == active)
return;
tree_column->button_active = active;
if (active)
{
gtk_signal_disconnect_by_func (GTK_OBJECT (tree_column->button),
(GtkSignalFunc) gtk_tree_view_passive_func,
NULL);
GTK_WIDGET_SET_FLAGS (tree_column->button, GTK_CAN_FOCUS);
if (GTK_WIDGET_VISIBLE (tree_column->tree_view))
gtk_widget_queue_draw (tree_column->button);
}
else
{
gtk_signal_connect (GTK_OBJECT (tree_column->button),
"event",
(GtkSignalFunc) gtk_tree_view_passive_func,
NULL);
GTK_WIDGET_UNSET_FLAGS (tree_column->button, GTK_CAN_FOCUS);
if (GTK_WIDGET_VISIBLE (tree_column->tree_view))
gtk_widget_queue_draw (tree_column->button);
}
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: whether the 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->button_active;
}
/**
* gtk_tree_view_column_set_widget:
* @tree_column: A #GtkTreeViewColumn.
* @widget: 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)
{
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
if (widget)
{
gtk_object_ref (GTK_OBJECT (widget));
gtk_object_sink (GTK_OBJECT (widget));
}
if (tree_column->child)
gtk_object_unref (GTK_OBJECT (tree_column->child));
tree_column->child = widget;
update_button_contents (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 in the column header. If a custom
* widget has not been set, then this will be a #GtkAlignment with a #GtkLabel
* in it.
*
* Return value: The #GtkWidget in the column header.
**/
GtkWidget *
gtk_tree_view_column_get_widget (GtkTreeViewColumn *tree_column)
{
g_return_val_if_fail (tree_column != NULL, NULL);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column), NULL);
return tree_column->child;
}
/**
* gtk_tree_view_column_set_justification:
* @tree_column: A #GtkTreeViewColumn.
* @justification: The justification of the title.
*
* Sets the justification of the title inside the column header. If a custom
* widget has been set, then this value is discarded.
**/
void
gtk_tree_view_column_set_justification (GtkTreeViewColumn *tree_column,
GtkJustification justification)
{
GtkWidget *alignment;
g_return_if_fail (tree_column != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (tree_column));
if (tree_column->justification == justification)
return;
tree_column->justification = justification;
alignment = GTK_BIN (tree_column->button)->child;
if (GTK_IS_ALIGNMENT (alignment))
{
switch (tree_column->justification)
{
case GTK_JUSTIFY_LEFT:
gtk_alignment_set (GTK_ALIGNMENT (alignment), 0.0, 0.5, 0.0, 0.0);
break;
case GTK_JUSTIFY_RIGHT:
gtk_alignment_set (GTK_ALIGNMENT (alignment), 1.0, 0.5, 0.0, 0.0);
break;
case GTK_JUSTIFY_CENTER:
gtk_alignment_set (GTK_ALIGNMENT (alignment), 0.5, 0.5, 0.0, 0.0);
break;
case GTK_JUSTIFY_FILL:
gtk_alignment_set (GTK_ALIGNMENT (alignment), 0.5, 0.5, 0.0, 0.0);
break;
default:
break;
}
}
g_object_notify (G_OBJECT (tree_column), "justification");
}
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