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/*
*
* This file is part of XForms.
*
* XForms 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, or
* (at your option) any later version.
*
* XForms 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 XForms; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*
*/
/*
* $Id: pscol.c,v 0.36 1999/07/17 03:32:50 zhao beta $
*
*.
* This file is part of XForms package
* Copyright (c) 1997-2000 by T.C. Zhao
* All rights reserved.
*.
*
* Take care of color
*/
#include "forms.h"
#include "flinternal.h"
#include <math.h>
#include "fd2ps.h"
#define VN(a) a,#a
#define NV(a) #a,a
/* slightly different from XForms' built-in due to the difference
* between printer and screen
*/
#define PREVIEW
static FL_IMAP fl_imap[] =
{
{NV(FL_BLACK), 0, 0, 0},
{NV(FL_WHITE), 255, 255, 255},
{NV(FL_COL1), 161, 161, 161}, /* default color, gray63 */
{NV(FL_MCOL), 191, 191, 191}, /* used as magic, gray75 */
{NV(FL_RIGHT_BCOL), 41, 41, 41}, /* right gray16 */
{NV(FL_BOTTOM_BCOL), 89, 89, 89}, /* bottom gray35 */
{NV(FL_LEFT_BCOL), 222, 222, 222}, /* left color gray87 */
{NV(FL_SLATEBLUE), 113, 113, 198},
{NV(FL_INDIANRED), 198, 113, 113},
{NV(FL_RED), 255, 0, 0},
{NV(FL_BLUE), 0, 0, 255},
{NV(FL_GREEN), 0, 255, 0},
{NV(FL_YELLOW), 255, 255, 0},
{NV(FL_MAGENTA), 255, 0, 255},
{NV(FL_CYAN), 0, 255, 255},
{NV(FL_TOMATO), 255, 99, 71},
{NV(FL_INACTIVE), 110, 110, 110}, /* gray43 */
{NV(FL_TOP_BCOL), 204, 204, 204}, /* top gray80 */
{NV(FL_PALEGREEN), 113, 198, 113},
{NV(FL_DARKGOLD), 205, 149, 10},
{NV(FL_ORCHID), 205, 105, 201},
{NV(FL_DARKCYAN), 40, 170, 175},
{NV(FL_DARKTOMATO), 139, 54, 38},
{NV(FL_WHEAT), 255, 231, 155},
{NV(FL_DARKORANGE), 255, 128, 0},
{NV(FL_DEEPPINK), 255, 0, 128},
{NV(FL_CHARTREUSE), 128, 255, 0},
{NV(FL_DARKVIOLET), 128, 0, 255},
{NV(FL_SPRINGGREEN), 0, 255, 128},
{NV(FL_DODGERBLUE), 0, 128, 255},
{NV(FL_DOGERBLUE), 0, 128, 255},
{NV(FL_LIGHTER_COL1), 173, 173, 173},
{NV(FL_DARKER_COL1), 153, 153, 153}
};
#define builtin sizeof(fl_imap)/sizeof(fl_imap[0])
/*
* do gamma adjustment
*/
void
apply_gamma(float gamma)
{
FL_IMAP *fm = fl_imap, *fs;
float lastgamma = 1.0;
if (FL_abs(gamma) < 1.0e-3)
{
fprintf(stderr, "fd2ps: Bad Gamma value %.2f\n", gamma);
return;
}
for (fs = fm + builtin; fm < fs; fm++)
{
if (psinfo.verbose)
fprintf(stderr, "fm->r=%d\n", fm->r);
fm->r = (0.4 + 255.0 * (pow((double) fm->r / 255.0, lastgamma / gamma)));
fm->g = (0.4 + 255.0 * (pow((double) fm->g / 255.0, lastgamma / gamma)));
fm->b = (0.4 + 255.0 * (pow((double) fm->b / 255.0, lastgamma / gamma)));
if (psinfo.verbose)
fprintf(stderr, "fm->r=%d\n", fm->r);
}
lastgamma = gamma;
}
void
fl_query_imap(long col, int *r, int *g, int *b)
{
FL_IMAP *flmap = fl_imap, *flmape = flmap + builtin;
for (; flmap < flmape; flmap++)
if (col == flmap->index)
{
*r = flmap->r;
*g = flmap->g;
*b = flmap->b;
return;
}
}
#define C2NC(c) (1.0/255.0*c)
static long cur_color = -1;
void
ps_invalidate_color_cache(void)
{
cur_color = -1;
}
void
ps_color(long color)
{
int r, g, b;
if (color == cur_color)
return;
fl_query_imap(color, &r, &g, &b);
if (psinfo.colorps && (r != g || r != b))
ps_output("%.3g %.3g %.3g RGB ", C2NC(r), C2NC(g), C2NC(b));
else
ps_output("%.3g G ", C2NC(rgb2gray(r, g, b)));
cur_color = color;
}
int
get_gray255(long color)
{
int r, g, b;
fl_query_imap(color, &r, &g, &b);
return rgb2gray(r, g, b) + 0.1;
}
int
fl_get_namedcolor(const char *s)
{
FL_IMAP *flmap = fl_imap, *flmape = flmap + builtin;
for (; s && flmap < flmape; flmap++)
if (strcmp(s, flmap->name) == 0)
return flmap->index;
/* a wild shot */
return atoi(s);
}
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