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/* -*- 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);
}
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