/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */

/*

 * GData Client

 * Copyright (C) Philip Withnall 2008-2009 <philip@tecnocode.co.uk>

 *

 * GData Client 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 2.1 of the License, or (at your option) any later version.

 *

 * GData Client 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 GData Client.  If not, see <http://www.gnu.org/licenses/>.

 */

/**

 * SECTION:gdata-types

 * @short_description: miscellaneous data types

 * @stability: Stable

 * @include: gdata/gdata-types.h

 *

 * The structures here are used haphazardly across the library, describing

 * various small data types.

 */

#include <glib.h>

#include <glib-object.h>

#include <string.h>

#include <stdlib.h>

#include <libsoup/soup.h>

#include "gdata-types.h"

static gpointer

gdata_color_copy (gpointer color)

{

	return g_memdup (color, sizeof (GDataColor));

}

GType

gdata_color_get_type (void)

{

	static GType type_id = 0;

	if (type_id == 0) {

		type_id = g_boxed_type_register_static (g_intern_static_string ("GDataColor"),

		                                        (GBoxedCopyFunc) gdata_color_copy,

		                                        (GBoxedFreeFunc) g_free);

	}

	return type_id;

}

/**

 * gdata_color_from_hexadecimal:

 * @hexadecimal: a hexadecimal color string

 * @color: (out caller-allocates): a #GDataColor

 *

 * Parses @hexadecimal and returns a #GDataColor describing it in @color.

 *

 * @hexadecimal should be in the form <literal>#<replaceable>rr</replaceable><replaceable>gg</replaceable><replaceable>bb</replaceable></literal>,

 * where <replaceable>rr</replaceable> is a two-digit hexadecimal red intensity value, <replaceable>gg</replaceable> is green

 * and <replaceable>bb</replaceable> is blue. The hash is optional.

 *

 * Return value: %TRUE on success, %FALSE otherwise

 */

gboolean

gdata_color_from_hexadecimal (const gchar *hexadecimal, GDataColor *color)

{

	gint temp;

	g_return_val_if_fail (hexadecimal != NULL, FALSE);

	g_return_val_if_fail (color != NULL, FALSE);

	if (*hexadecimal == '#')

		hexadecimal++;

	if (strlen (hexadecimal) != 6)

		return FALSE;

	/* Red */

	temp = g_ascii_xdigit_value (*(hexadecimal++)) * 16;

	if (temp < 0)

		return FALSE;

	color->red = temp;

	temp = g_ascii_xdigit_value (*(hexadecimal++));

	if (temp < 0)

		return FALSE;

	color->red += temp;

	/* Green */

	temp = g_ascii_xdigit_value (*(hexadecimal++)) * 16;

	if (temp < 0)

		return FALSE;

	color->green = temp;

	temp = g_ascii_xdigit_value (*(hexadecimal++));

	if (temp < 0)

		return FALSE;

	color->green += temp;

	/* Blue */

	temp = g_ascii_xdigit_value (*(hexadecimal++)) * 16;

	if (temp < 0)

		return FALSE;

	color->blue = temp;

	temp = g_ascii_xdigit_value (*(hexadecimal++));

	if (temp < 0)

		return FALSE;

	color->blue += temp;

	return TRUE;

}

/**

 * gdata_color_to_hexadecimal:

 * @color: a #GDataColor

 *

 * Returns a string describing @color in hexadecimal form; in the form <literal>#<replaceable>rr</replaceable><replaceable>gg</replaceable>

 * <replaceable>bb</replaceable></literal>, where <replaceable>rr</replaceable> is a two-digit hexadecimal red intensity value,

 * <replaceable>gg</replaceable> is green and <replaceable>bb</replaceable> is blue. The hash is always present.

 *

 * Return value: the color string; free with g_free()

 *

 * Since: 0.3.0

 */

gchar *

gdata_color_to_hexadecimal (const GDataColor *color)

{

	g_return_val_if_fail (color != NULL, NULL);

	return g_strdup_printf ("#%02x%02x%02x", color->red, color->green, color->blue);

}