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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gdkcolor.h"
#include "gdkscreen.h"
#include "gdkinternals.h"
#include <time.h>
/**
* SECTION:colors
* @Short_description: Manipulation of colors
* @Title: Colors
*
* A #GdkColor represents a color.
*
* When working with cairo, it is often more convenient
* to use a #GdkRGBA instead.
*/
/**
* gdk_color_copy:
* @color: a #GdkColor
*
* Makes a copy of a #GdkColor.
*
* The result must be freed using gdk_color_free().
*
* Return value: a copy of @color
*/
GdkColor*
gdk_color_copy (const GdkColor *color)
{
GdkColor *new_color;
g_return_val_if_fail (color != NULL, NULL);
new_color = g_slice_new (GdkColor);
*new_color = *color;
return new_color;
}
/**
* gdk_color_free:
* @color: a #GdkColor
*
* Frees a #GdkColor created with gdk_color_copy().
*/
void
gdk_color_free (GdkColor *color)
{
g_return_if_fail (color != NULL);
g_slice_free (GdkColor, color);
}
/**
* gdk_color_hash:
* @color: a #GdkColor
*
* A hash function suitable for using for a hash
* table that stores #GdkColors.
*
* Return value: The hash function applied to @color
*/
guint
gdk_color_hash (const GdkColor *color)
{
return ((color->red) +
(color->green << 11) +
(color->blue << 22) +
(color->blue >> 6));
}
/**
* gdk_color_equal:
* @colora: a #GdkColor
* @colorb: another #GdkColor
*
* Compares two colors.
*
* Return value: %TRUE if the two colors compare equal
*/
gboolean
gdk_color_equal (const GdkColor *colora,
const GdkColor *colorb)
{
g_return_val_if_fail (colora != NULL, FALSE);
g_return_val_if_fail (colorb != NULL, FALSE);
return ((colora->red == colorb->red) &&
(colora->green == colorb->green) &&
(colora->blue == colorb->blue));
}
G_DEFINE_BOXED_TYPE (GdkColor, gdk_color,
gdk_color_copy,
gdk_color_free)
/**
* gdk_color_parse:
* @spec: the string specifying the color
* @color: (out): the #GdkColor to fill in
*
* Parses a textual specification of a color and fill in the
* @red, @green, and @blue fields of a #GdkColor.
*
* The string can either one of a large set of standard names
* (taken from the X11 `rgb.txt` file), or it can be a hexadecimal
* value in the form “\#rgb” “\#rrggbb”, “\#rrrgggbbb” or
* “\#rrrrggggbbbb” where “r”, “g” and “b” are hex digits of
* the red, green, and blue components of the color, respectively.
* (White in the four forms is “\#fff”, “\#ffffff”, “\#fffffffff”
* and “\#ffffffffffff”).
*
* Return value: %TRUE if the parsing succeeded
*/
gboolean
gdk_color_parse (const gchar *spec,
GdkColor *color)
{
PangoColor pango_color;
if (pango_color_parse (&pango_color, spec))
{
color->red = pango_color.red;
color->green = pango_color.green;
color->blue = pango_color.blue;
return TRUE;
}
else
return FALSE;
}
/**
* gdk_color_to_string:
* @color: a #GdkColor
*
* Returns a textual specification of @color in the hexadecimal
* form `\#rrrrggggbbbb`, where `r`, `g` and `b` are hex digits
* representing the red, green and blue components respectively.
*
* The returned string can be parsed by gdk_color_parse().
*
* Return value: a newly-allocated text string
*
* Since: 2.12
*/
gchar *
gdk_color_to_string (const GdkColor *color)
{
PangoColor pango_color;
g_return_val_if_fail (color != NULL, NULL);
pango_color.red = color->red;
pango_color.green = color->green;
pango_color.blue = color->blue;
return pango_color_to_string (&pango_color);
}
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