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gimp/libgimpwidgets/gimpintcombobox.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpintcombobox.c
* Copyright (C) 2004 Sven Neumann <sven@gimp.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 <libintl.h>
#include <gtk/gtk.h>
#include "gimpwidgetstypes.h"
#include "gimpintcombobox.h"
#include "gimpintstore.h"
static void gimp_int_combo_box_init (GimpIntComboBox *combo_box);
GType
gimp_int_combo_box_get_type (void)
{
static GType box_type = 0;
if (! box_type)
{
static const GTypeInfo box_info =
{
sizeof (GimpIntComboBoxClass),
NULL, /* base_init */
NULL, /* base_finalize */
NULL, /* class_init */
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpIntComboBox),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_int_combo_box_init
};
box_type = g_type_register_static (GTK_TYPE_COMBO_BOX,
"GimpIntComboBox",
&box_info, 0);
}
return box_type;
}
static void
gimp_int_combo_box_init (GimpIntComboBox *combo_box)
{
GtkListStore *store;
GtkCellRenderer *cell;
store = gimp_int_store_new ();
gtk_combo_box_set_model (GTK_COMBO_BOX (combo_box), GTK_TREE_MODEL (store));
g_object_unref (store);
cell = gtk_cell_renderer_pixbuf_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box), cell, FALSE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_box), cell,
"stock_id", GIMP_INT_STORE_STOCK_ID,
"pixbuf", GIMP_INT_STORE_PIXBUF,
NULL);
cell = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box), cell, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_box), cell,
"text", GIMP_INT_STORE_LABEL,
NULL);
}
/**
* gimp_int_combo_box_new:
* @first_label: the label of the first item
* @first_value: the value of the first item
* @...: a %NULL terminated list of more label, value pairs
*
* Creates a GtkComboBox that has integer values associated with each
* item. The items to fill the combo box with are specified as a %NULL
* terminated list of label/value pairs.
*
* Return value: a new #GimpIntComboBox.
*
* Since: GIMP 2.2
**/
GtkWidget *
gimp_int_combo_box_new (const gchar *first_label,
gint first_value,
...)
{
GtkWidget *combo_box;
va_list args;
va_start (args, first_value);
combo_box = gimp_int_combo_box_new_valist (first_label, first_value, args);
va_end (args);
return combo_box;
}
/**
* gimp_int_combo_box_new_valist:
* @first_label: the label of the first item
* @first_value: the value of the first item
* @values: a va_list with more values
*
* A variant of gimp_int_combo_box_new() that takes a va_list of
* label/value pairs. Probably only useful for language bindings.
*
* Return value: a new #GimpIntComboBox.
*
* Since: GIMP 2.2
**/
GtkWidget *
gimp_int_combo_box_new_valist (const gchar *first_label,
gint first_value,
va_list values)
{
GtkWidget *combo_box;
GtkListStore *store;
const gchar *label;
gint value;
store = gimp_int_store_new ();
combo_box = g_object_new (GIMP_TYPE_INT_COMBO_BOX,
"model", store,
NULL);
g_object_unref (store);
for (label = first_label, value = first_value;
label;
label = va_arg (values, const gchar *), value = va_arg (values, gint))
{
GtkTreeIter iter;
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
GIMP_INT_STORE_VALUE, value,
GIMP_INT_STORE_LABEL, label,
-1);
}
return combo_box;
}
/**
* gimp_int_combo_box_new_array:
* @n_values: the number of values
* @labels: an array of labels (array length must be @n_values)
*
* A variant of gimp_int_combo_box_new() that takes an array of labels.
* The array indices are used as values.
*
* Return value: a new #GimpIntComboBox.
*
* Since: GIMP 2.2
**/
GtkWidget *
gimp_int_combo_box_new_array (gint n_values,
const gchar *labels[])
{
GtkWidget *combo_box;
GtkListStore *store;
gint i;
g_return_val_if_fail (n_values > 0, NULL);
g_return_val_if_fail (labels != NULL, NULL);
store = gimp_int_store_new ();
combo_box = g_object_new (GIMP_TYPE_INT_COMBO_BOX,
"model", store,
NULL);
g_object_unref (store);
for (i = 0; i < n_values; i++)
{
GtkTreeIter iter;
if (labels[i])
{
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
GIMP_INT_STORE_VALUE, i,
GIMP_INT_STORE_LABEL, gettext (labels[i]),
-1);
}
}
return combo_box;
}
/**
* gimp_int_combo_box_prepend:
* @combo_box: a #GimpIntComboBox
* @...: pairs of column number and value, terminated with -1
*
* This function provides a convenient way to prepend items to a
* #GimpIntComboBox. It prepends a row to the @combo_box's list store
* and calls gtk_list_store_set() for you.
*
* The column number must be taken from the enum #GimpIntStoreColumns.
*
* Since: GIMP 2.2
**/
void
gimp_int_combo_box_prepend (GimpIntComboBox *combo_box,
...)
{
GtkListStore *store;
GtkTreeIter iter;
va_list args;
g_return_if_fail (GIMP_IS_INT_COMBO_BOX (combo_box));
store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box)));
va_start (args, combo_box);
gtk_list_store_prepend (store, &iter);
gtk_list_store_set_valist (store, &iter, args);
va_end (args);
}
/**
* gimp_int_combo_box_append:
* @combo_box: a #GimpIntComboBox
* @...: pairs of column number and value, terminated with -1
*
* This function provides a convenient way to append items to a
* #GimpIntComboBox. It appends a row to the @combo_box's list store
* and calls gtk_list_store_set() for you.
*
* The column number must be taken from the enum #GimpIntStoreColumns.
*
* Since: GIMP 2.2
**/
void
gimp_int_combo_box_append (GimpIntComboBox *combo_box,
...)
{
GtkListStore *store;
GtkTreeIter iter;
va_list args;
g_return_if_fail (GIMP_IS_INT_COMBO_BOX (combo_box));
store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box)));
va_start (args, combo_box);
gtk_list_store_append (store, &iter);
gtk_list_store_set_valist (store, &iter, args);
va_end (args);
}
/**
* gimp_int_combo_box_set_active:
* @combo_box: a #GimpIntComboBox
* @value: an integer value
*
* Looks up the item that belongs to the given @value and makes it the
* selected item in the @combo_box.
*
* Return value: %TRUE on success or %FALSE if there was no item for
* this value.
*
* Since: GIMP 2.2
**/
gboolean
gimp_int_combo_box_set_active (GimpIntComboBox *combo_box,
gint value)
{
GtkTreeModel *model;
GtkTreeIter iter;
g_return_val_if_fail (GIMP_IS_INT_COMBO_BOX (combo_box), FALSE);
model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
if (gimp_int_store_lookup_by_value (model, value, &iter))
{
gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo_box), &iter);
return TRUE;
}
return FALSE;
}
/**
* gimp_int_combo_box_get_active:
* @combo_box: a #GimpIntComboBox
* @value: return location for the integer value
*
* Retrieves the value of the selected (active) item in the @combo_box.
*
* Return value: %TRUE if @value has been set or %FALSE if no item was
* active.
*
* Since: GIMP 2.2
**/
gboolean
gimp_int_combo_box_get_active (GimpIntComboBox *combo_box,
gint *value)
{
GtkTreeIter iter;
g_return_val_if_fail (GIMP_IS_INT_COMBO_BOX (combo_box), FALSE);
g_return_val_if_fail (value != NULL, FALSE);
if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (combo_box), &iter))
{
gtk_tree_model_get (gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box)),
&iter,
GIMP_INT_STORE_VALUE, value,
-1);
return TRUE;
}
return FALSE;
}
/**
* gimp_int_combo_box_connect:
* @combo_box: a #GimpIntComboBox
* @value: the value to set
* @callback: a callback to connect to the @combo_box's "changed" signal
* @data: a pointer passed as data to g_signal_connect()
*
* A convenience function that sets the inital @value of a
* #GimpIntComboBox and connects @callback to the "changed"
* signal.
*
* This function also calls the @callback once after setting the
* initial @value. This is often convenient when working with combo
* boxes that select a default active item (like for example
* gimp_drawable_combo_box_new). If you pass an invalid initial
* @value, the @callback will be called with the default item active.
*
* Return value: the signal handler ID as returned by g_signal_connect()
*
* Since: GIMP 2.2
**/
gulong
gimp_int_combo_box_connect (GimpIntComboBox *combo_box,
gint value,
GCallback callback,
gpointer data)
{
gulong handler = 0;
g_return_val_if_fail (GIMP_IS_INT_COMBO_BOX (combo_box), 0);
if (callback)
handler = g_signal_connect (combo_box, "changed", callback, data);
if (! gimp_int_combo_box_set_active (combo_box, value))
g_signal_emit_by_name (combo_box, "changed", NULL);
return handler;
}
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