/*-

 * XCrHsbCmap.c - X11 library routine to create an HSB ramp colormaps.

 *

 * Copyright (c) 1991, 2011, Oracle and/or its affiliates. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice (including the next

 * paragraph) shall be included in all copies or substantial portions of the

 * Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 *

 * Author: Patrick J. Naughton

 * [email protected]

 */

#include <X11/X.h>

#include <X11/Xos.h>

#include <X11/Xlib.h>

#include "xcolor.h"

Status

XCreateHSBColormap(

    Display    *dsp,

    int         screen,

    Colormap   *cmap,		/* colormap return value */

    int         count,		/* number of entries to use */

    double      h1,		/* starting hue */

    double      s1,		/* starting saturation */

    double      b1,		/* starting brightness */

    double      h2,		/* ending hue */

    double      s2,		/* ending saturation */

    double      b2,		/* ending brightness */

    int         bw,		/* Boolean: True = save black and white */

    Visual    **visual)

{

    u_char      red[256];

    u_char      green[256];

    u_char      blue[256];

    unsigned long pixel;

    Status      status;

    XColor      xcolors[256];

    if (count > 256)

	return BadValue;

    HSBramp(h1, s1, b1, h2, s2, b2, 0, count - 1, red, green, blue);

    if (bw) {

	pixel = WhitePixel(dsp, screen);

	if (pixel < 256)

	    red[pixel] = green[pixel] = blue[pixel] = 0xff;

	pixel = BlackPixel(dsp, screen);

	if (pixel < 256)

	    red[pixel] = green[pixel] = blue[pixel] = 0;

    }

    status = XCreateDynamicColormap(dsp, screen, cmap, visual, xcolors,

				    count, red, green, blue);

    return status;

}