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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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-1999. 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 <time.h>
#include "gdkcolor.h"
#include "gdkinternals.h"
GdkColormap*
gdk_colormap_ref (GdkColormap *cmap)
{
return (GdkColormap *) g_object_ref (G_OBJECT (cmap));
}
void
gdk_colormap_unref (GdkColormap *cmap)
{
g_object_unref (G_OBJECT (cmap));
}
GdkVisual *
gdk_colormap_get_visual (GdkColormap *colormap)
{
g_return_val_if_fail (GDK_IS_COLORMAP (colormap), NULL);
return colormap->visual;
}
void
gdk_colors_store (GdkColormap *colormap,
GdkColor *colors,
gint ncolors)
{
gint i;
for (i = 0; i < ncolors; i++)
{
colormap->colors[i].pixel = colors[i].pixel;
colormap->colors[i].red = colors[i].red;
colormap->colors[i].green = colors[i].green;
colormap->colors[i].blue = colors[i].blue;
}
gdk_colormap_change (colormap, ncolors);
}
/*
*--------------------------------------------------------------
* gdk_color_copy
*
* Copy a color structure into new storage.
*
* Arguments:
* "color" is the color struct to copy.
*
* Results:
* A new color structure. Free it with gdk_color_free.
*
*--------------------------------------------------------------
*/
static GMemChunk *color_chunk;
GdkColor*
gdk_color_copy (const GdkColor *color)
{
GdkColor *new_color;
g_return_val_if_fail (color != NULL, NULL);
if (color_chunk == NULL)
color_chunk = g_mem_chunk_new ("colors",
sizeof (GdkColor),
4096,
G_ALLOC_AND_FREE);
new_color = g_chunk_new (GdkColor, color_chunk);
*new_color = *color;
return new_color;
}
/*
*--------------------------------------------------------------
* gdk_color_free
*
* Free a color structure obtained from gdk_color_copy. Do not use
* with other color structures.
*
* Arguments:
* "color" is the color struct to free.
*
*-------------------------------------------------------------- */
void
gdk_color_free (GdkColor *color)
{
g_assert (color_chunk != NULL);
g_return_if_fail (color != NULL);
g_mem_chunk_free (color_chunk, color);
}
gboolean
gdk_color_white (GdkColormap *colormap,
GdkColor *color)
{
gint return_val;
g_return_val_if_fail (colormap != NULL, FALSE);
if (color)
{
color->red = 65535;
color->green = 65535;
color->blue = 65535;
return_val = gdk_color_alloc (colormap, color);
}
else
return_val = FALSE;
return return_val;
}
gboolean
gdk_color_black (GdkColormap *colormap,
GdkColor *color)
{
gint return_val;
g_return_val_if_fail (colormap != NULL, FALSE);
if (color)
{
color->red = 0;
color->green = 0;
color->blue = 0;
return_val = gdk_color_alloc (colormap, color);
}
else
return_val = FALSE;
return return_val;
}
/********************
* Color allocation *
********************/
gboolean
gdk_colormap_alloc_color (GdkColormap *colormap,
GdkColor *color,
gboolean writeable,
gboolean best_match)
{
gboolean success;
gdk_colormap_alloc_colors (colormap, color, 1, writeable, best_match,
&success);
return success;
}
gboolean
gdk_color_alloc (GdkColormap *colormap,
GdkColor *color)
{
gboolean success;
gdk_colormap_alloc_colors (colormap, color, 1, FALSE, TRUE, &success);
return success;
}
guint
gdk_color_hash (const GdkColor *colora)
{
return ((colora->red) +
(colora->green << 11) +
(colora->blue << 22) +
(colora->blue >> 6));
}
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));
}
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