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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 3 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, see
* <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <libintl.h>
#include <gtk/gtk.h>
#include "gimpwidgetstypes.h"
#include "gimpintcombobox.h"
#include "gimpintstore.h"
/**
* SECTION: gimpintcombobox
* @title: GimpIntComboBox
* @short_description: A widget providing a popup menu of integer
* values (e.g. enums).
*
* A widget providing a popup menu of integer values (e.g. enums).
**/
enum
{
PROP_0,
PROP_ELLIPSIZE,
PROP_LABEL
};
typedef struct
{
GtkCellRenderer *pixbuf_renderer;
GtkCellRenderer *text_renderer;
PangoEllipsizeMode ellipsize;
gchar *label;
GtkCellRenderer *label_renderer;
GimpIntSensitivityFunc sensitivity_func;
gpointer sensitivity_data;
GDestroyNotify sensitivity_destroy;
} GimpIntComboBoxPrivate;
#define GIMP_INT_COMBO_BOX_GET_PRIVATE(obj) \
((GimpIntComboBoxPrivate *) ((GimpIntComboBox *) (obj))->priv)
static void gimp_int_combo_box_finalize (GObject *object);
static void gimp_int_combo_box_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_int_combo_box_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_int_combo_box_create_cells (GimpIntComboBox *combo_box);
static void gimp_int_combo_box_data_func (GtkCellLayout *layout,
GtkCellRenderer *cell,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data);
G_DEFINE_TYPE (GimpIntComboBox, gimp_int_combo_box, GTK_TYPE_COMBO_BOX)
#define parent_class gimp_int_combo_box_parent_class
static void
gimp_int_combo_box_class_init (GimpIntComboBoxClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gimp_int_combo_box_finalize;
object_class->set_property = gimp_int_combo_box_set_property;
object_class->get_property = gimp_int_combo_box_get_property;
/**
* GimpIntComboBox:ellipsize:
*
* Specifies the preferred place to ellipsize text in the combo-box,
* if the cell renderer does not have enough room to display the
* entire string.
*
* Since: 2.4
*/
g_object_class_install_property (object_class, PROP_ELLIPSIZE,
g_param_spec_enum ("ellipsize", NULL, NULL,
PANGO_TYPE_ELLIPSIZE_MODE,
PANGO_ELLIPSIZE_NONE,
GIMP_PARAM_READWRITE));
/**
* GimpIntComboBox:label:
*
* Sets a label on the combo-box, see gimp_int_combo_box_set_label().
*
* Since: 2.10
*/
g_object_class_install_property (object_class, PROP_LABEL,
g_param_spec_string ("label", NULL, NULL,
NULL,
GIMP_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (GimpIntComboBoxPrivate));
}
static void
gimp_int_combo_box_init (GimpIntComboBox *combo_box)
{
GtkListStore *store;
combo_box->priv = G_TYPE_INSTANCE_GET_PRIVATE (combo_box,
GIMP_TYPE_INT_COMBO_BOX,
GimpIntComboBoxPrivate);
store = gimp_int_store_new ();
gtk_combo_box_set_model (GTK_COMBO_BOX (combo_box), GTK_TREE_MODEL (store));
g_object_unref (store);
gimp_int_combo_box_create_cells (GIMP_INT_COMBO_BOX (combo_box));
}
static void
gimp_int_combo_box_finalize (GObject *object)
{
GimpIntComboBoxPrivate *priv = GIMP_INT_COMBO_BOX_GET_PRIVATE (object);
if (priv->label)
{
g_free (priv->label);
priv->label = NULL;
}
if (priv->sensitivity_destroy)
{
GDestroyNotify d = priv->sensitivity_destroy;
priv->sensitivity_destroy = NULL;
d (priv->sensitivity_data);
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_int_combo_box_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpIntComboBoxPrivate *priv = GIMP_INT_COMBO_BOX_GET_PRIVATE (object);
switch (property_id)
{
case PROP_ELLIPSIZE:
priv->ellipsize = g_value_get_enum (value);
g_object_set_property (G_OBJECT (priv->text_renderer),
pspec->name, value);
break;
case PROP_LABEL:
gimp_int_combo_box_set_label (GIMP_INT_COMBO_BOX (object),
g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_int_combo_box_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpIntComboBoxPrivate *priv = GIMP_INT_COMBO_BOX_GET_PRIVATE (object);
switch (property_id)
{
case PROP_ELLIPSIZE:
g_value_set_enum (value, priv->ellipsize);
break;
case PROP_LABEL:
g_value_set_string (value, priv->label);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/**
* 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.
*
* If you need to construct an empty #GimpIntComboBox, it's best to use
* g_object_new (GIMP_TYPE_INT_COMBO_BOX, NULL).
*
* Return value: a new #GimpIntComboBox.
*
* Since: 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: 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;
combo_box = g_object_new (GIMP_TYPE_INT_COMBO_BOX, NULL);
store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box)));
for (label = first_label, value = first_value;
label;
label = va_arg (values, const gchar *), value = va_arg (values, gint))
{
GtkTreeIter iter = { 0, };
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: 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 || n_values == 0, NULL);
combo_box = g_object_new (GIMP_TYPE_INT_COMBO_BOX, NULL);
store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box)));
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: 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: 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: 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: 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 initial @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: 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;
}
/**
* gimp_int_combo_box_set_label:
* @combo_box: a #GimpIntComboBox
* @label: a string to be shown as label
*
* Sets a caption on the @combo_box that will be displayed
* left-aligned inside the box. When a label is set, the remaining
* contents of the box will be right-aligned. This is useful for
* places where screen estate is rare, like in tool options.
*
* Since: 2.10
**/
void
gimp_int_combo_box_set_label (GimpIntComboBox *combo_box,
const gchar *label)
{
GimpIntComboBoxPrivate *priv;
g_return_if_fail (GIMP_IS_INT_COMBO_BOX (combo_box));
priv = GIMP_INT_COMBO_BOX_GET_PRIVATE (combo_box);
if (label == priv->label)
return;
if (priv->label)
{
g_free (priv->label);
priv->label = NULL;
g_signal_handlers_disconnect_by_func (combo_box,
gimp_int_combo_box_create_cells,
NULL);
}
if (label)
{
priv->label = g_strdup (label);
g_signal_connect (combo_box, "notify::popup-shown",
G_CALLBACK (gimp_int_combo_box_create_cells),
NULL);
}
gimp_int_combo_box_create_cells (combo_box);
g_object_notify (G_OBJECT (combo_box), "label");
}
/**
* gimp_int_combo_box_get_label:
* @combo_box: a #GimpIntComboBox
*
* Returns the label previously set with gimp_int_combo_box_set_label(),
* or %NULL,
*
* Return value: the @combo_box' label.
*
* Since: 2.10
**/
const gchar *
gimp_int_combo_box_get_label (GimpIntComboBox *combo_box)
{
g_return_val_if_fail (GIMP_IS_INT_COMBO_BOX (combo_box), NULL);
return GIMP_INT_COMBO_BOX_GET_PRIVATE (combo_box)->label;
}
/**
* gimp_int_combo_box_set_sensitivity:
* @combo_box: a #GimpIntComboBox
* @func: a function that returns a boolean value, or %NULL to unset
* @data: data to pass to @func
* @destroy: destroy notification for @data
*
* Sets a function that is used to decide about the sensitivity of
* rows in the @combo_box. Use this if you want to set certain rows
* insensitive.
*
* Calling gtk_widget_queue_draw() on the @combo_box will cause the
* sensitivity to be updated.
*
* Since: 2.4
**/
void
gimp_int_combo_box_set_sensitivity (GimpIntComboBox *combo_box,
GimpIntSensitivityFunc func,
gpointer data,
GDestroyNotify destroy)
{
GimpIntComboBoxPrivate *priv;
g_return_if_fail (GIMP_IS_INT_COMBO_BOX (combo_box));
priv = GIMP_INT_COMBO_BOX_GET_PRIVATE (combo_box);
if (priv->sensitivity_destroy)
{
GDestroyNotify d = priv->sensitivity_destroy;
priv->sensitivity_destroy = NULL;
d (priv->sensitivity_data);
}
priv->sensitivity_func = func;
priv->sensitivity_data = data;
priv->sensitivity_destroy = destroy;
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo_box),
priv->pixbuf_renderer,
func ?
gimp_int_combo_box_data_func : NULL,
priv, NULL);
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo_box),
priv->text_renderer,
func ?
gimp_int_combo_box_data_func : NULL,
priv, NULL);
}
/* private functions */
static void
queue_resize_cell_view (GtkContainer *container)
{
GList *children = gtk_container_get_children (container);
GList *list;
for (list = children; list; list = g_list_next (list))
{
if (GTK_IS_CELL_VIEW (list->data))
{
gtk_widget_queue_resize (list->data);
break;
}
else if (GTK_IS_CONTAINER (list->data))
{
queue_resize_cell_view (list->data);
}
}
g_list_free (children);
}
static void
gimp_int_combo_box_create_cells (GimpIntComboBox *combo_box)
{
GimpIntComboBoxPrivate *priv = GIMP_INT_COMBO_BOX_GET_PRIVATE (combo_box);
gboolean shown;
g_object_get (combo_box, "popup-shown", &shown, NULL);
gtk_cell_layout_clear (GTK_CELL_LAYOUT (combo_box));
priv->pixbuf_renderer = gtk_cell_renderer_pixbuf_new ();
g_object_set (priv->pixbuf_renderer,
"xpad", 2,
NULL);
priv->text_renderer = gtk_cell_renderer_text_new ();
if (! shown)
g_object_set (priv->text_renderer,
"ellipsize", priv->ellipsize,
NULL);
if (priv->label && ! shown)
{
priv->label_renderer = gtk_cell_renderer_text_new ();
g_object_set (priv->label_renderer,
"text", priv->label,
NULL);
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box),
priv->label_renderer, FALSE);
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (combo_box),
priv->pixbuf_renderer, FALSE);
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (combo_box),
priv->text_renderer, TRUE);
g_object_set (priv->text_renderer,
"xalign", 1.0,
NULL);
}
else
{
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box),
priv->pixbuf_renderer, FALSE);
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo_box),
priv->text_renderer, TRUE);
}
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_box),
priv->pixbuf_renderer,
"icon-name", GIMP_INT_STORE_ICON_NAME,
"pixbuf", GIMP_INT_STORE_PIXBUF,
NULL);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo_box),
priv->text_renderer,
"text", GIMP_INT_STORE_LABEL,
NULL);
if (priv->sensitivity_func)
{
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo_box),
priv->pixbuf_renderer,
gimp_int_combo_box_data_func,
priv, NULL);
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo_box),
priv->text_renderer,
gimp_int_combo_box_data_func,
priv, NULL);
}
/* HACK: GtkCellView doesn't invalidate itself when stuff is
* added/removed, work around this bug until GTK+ 2.24.19
*/
if (gtk_check_version (2, 24, 19))
{
GList *attached_menus;
queue_resize_cell_view (GTK_CONTAINER (combo_box));
/* HACK HACK HACK OMG */
attached_menus = g_object_get_data (G_OBJECT (combo_box),
"gtk-attached-menus");
for (; attached_menus; attached_menus = g_list_next (attached_menus))
queue_resize_cell_view (attached_menus->data);
}
}
static void
gimp_int_combo_box_data_func (GtkCellLayout *layout,
GtkCellRenderer *cell,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
GimpIntComboBoxPrivate *priv = data;
if (priv->sensitivity_func)
{
gint value;
gboolean sensitive;
gtk_tree_model_get (model, iter,
GIMP_INT_STORE_VALUE, &value,
-1);
sensitive = priv->sensitivity_func (value, priv->sensitivity_data);
g_object_set (cell,
"sensitive", sensitive,
NULL);
}
}
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