hedera/vn/field/vn-label.c

/*
 * Copyright (C) 2012 - Juan Ferrer Toribio
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "vn-label.h"

/**
 * SECTION:vn-label
 * @Short_description: a text label widget
 * @Title: VnLabel
 * @See_also: #VnField
 *
 * A label representing a generic value field.
 */
G_DEFINE_TYPE (VnLabel, vn_label, VN_TYPE_FIELD);

/**
 * vn_label_new:
 * 
 * Creates a new #VnLabel
 * 
 * Return value:a #VnLabel 
 **/
VnField * vn_label_new ()
{
	return g_object_new (VN_TYPE_LABEL, NULL);
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Private

static void vn_label_set_value (VnLabel * obj, const GValue * value)
{
	GValue new_value = G_VALUE_INIT;
	gvn_value_to_format_string (value, obj->format, &new_value);
	gtk_label_set_text (obj->label, g_value_get_string (&new_value));
	g_value_unset (&new_value);
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Properties

enum
{
	 PROP_FORMAT = 1
};

static void vn_label_set_property (VnLabel * obj, guint id,
	const GValue * value, GParamSpec * pspec)
{
	switch (id)
	{
		case PROP_FORMAT:
			g_free (obj->format);
			obj->format = g_value_dup_string (value);
			break;
		default:		
			G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);
	}
}

static void vn_label_get_property (VnLabel * obj, guint id,
	GValue * value, GParamSpec * pspec)
{
	switch (id)
	{
		case PROP_FORMAT:
			g_value_set_string (value, obj->format);
			break;
		default:		
			G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);
	}
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Class

static void vn_label_init (VnLabel * obj)
{
	obj->format = NULL;
	obj->label = GTK_LABEL (gtk_label_new (""));
	gtk_misc_set_alignment (GTK_MISC (obj->label), 0, 0.5);
	gtk_widget_show (GTK_WIDGET (obj->label));
	gtk_container_add (GTK_CONTAINER (obj), GTK_WIDGET (obj->label));

	VN_FIELD (obj)->field = GTK_WIDGET (obj->label);
}

static void vn_label_finalize (VnLabel * obj)
{
	g_free (obj->format);
	G_OBJECT_CLASS (vn_label_parent_class)->finalize (G_OBJECT (obj));
}

static void vn_label_class_init (VnLabelClass * klass)
{
	GObjectClass * k = G_OBJECT_CLASS (klass);
	k->set_property = (GObjectSetPropertyFunc) vn_label_set_property;
	k->get_property = (GObjectGetPropertyFunc) vn_label_get_property;
	k->finalize = (GObjectFinalizeFunc) vn_label_finalize;
	VN_FIELD_CLASS (klass)->set_value = (VnFieldSetValueFunc) vn_label_set_value;

	g_object_class_install_property (k, PROP_FORMAT,
		g_param_spec_string ("format"
			,_("Format")
			,_("The format string describing the output of the entry.")
			,NULL
			,G_PARAM_CONSTRUCT | G_PARAM_READWRITE
	));
}