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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. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file pscol.c
*
* This file is part of XForms package
* Copyright (c) 1997-2000 by T.C. Zhao
* All rights reserved.
*
* Take care of color
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "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 FLI_IMAP fl_imap[ ] =
{
{ NV( FL_BLACK), 0, 0, 0, 0, 0},
{ NV( FL_WHITE), 255, 255, 255, 0, 0},
{ NV( FL_COL1), 161, 161, 161, 0, 0}, /* default color, gray63 */
{ NV( FL_MCOL), 191, 191, 191, 0, 0}, /* used as magic, gray75 */
{ NV( FL_RIGHT_BCOL), 41, 41, 41, 0, 0}, /* right gray16 */
{ NV( FL_BOTTOM_BCOL), 89, 89, 89, 0, 0}, /* bottom gray35 */
{ NV( FL_LEFT_BCOL), 222, 222, 222, 0, 0}, /* left color gray87 */
{ NV( FL_SLATEBLUE), 113, 113, 198, 0, 0},
{ NV( FL_INDIANRED), 198, 113, 113, 0, 0},
{ NV( FL_RED), 255, 0, 0, 0, 0},
{ NV( FL_BLUE), 0, 0, 255, 0, 0},
{ NV( FL_GREEN), 0, 255, 0, 0, 0},
{ NV( FL_YELLOW), 255, 255, 0, 0, 0},
{ NV( FL_MAGENTA), 255, 0, 255, 0, 0},
{ NV( FL_CYAN), 0, 255, 255, 0, 0},
{ NV( FL_TOMATO), 255, 99, 71, 0, 0},
{ NV( FL_INACTIVE), 110, 110, 110, 0, 0}, /* gray43 */
{ NV( FL_TOP_BCOL), 204, 204, 204, 0, 0}, /* top gray80 */
{ NV( FL_PALEGREEN), 113, 198, 113, 0, 0},
{ NV( FL_DARKGOLD), 205, 149, 10, 0, 0},
{ NV( FL_ORCHID), 205, 105, 201, 0, 0},
{ NV( FL_DARKCYAN), 40, 170, 175, 0, 0},
{ NV( FL_DARKTOMATO), 139, 54, 38, 0, 0},
{ NV( FL_WHEAT), 255, 231, 155, 0, 0},
{ NV( FL_DARKORANGE), 255, 128, 0, 0, 0},
{ NV( FL_DEEPPINK), 255, 0, 128, 0, 0},
{ NV( FL_CHARTREUSE), 128, 255, 0, 0, 0},
{ NV( FL_DARKVIOLET), 128, 0, 255, 0, 0},
{ NV( FL_SPRINGGREEN), 0, 255, 128, 0, 0},
{ NV( FL_DODGERBLUE), 0, 128, 255, 0, 0},
{ NV( FL_DOGERBLUE), 0, 128, 255, 0, 0},
{ NV( FL_LIGHTER_COL1), 173, 173, 173, 0, 0},
{ NV( FL_DARKER_COL1), 153, 153, 153, 0, 0}
};
#define builtin sizeof(fl_imap)/sizeof(fl_imap[0])
/***************************************
* do gamma adjustment
***************************************/
void
apply_gamma( float gamma )
{
FLI_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( fm->r / 255.0, lastgamma / gamma );
fm->g = 0.4 + 255.0 * pow( fm->g / 255.0, lastgamma / gamma );
fm->b = 0.4 + 255.0 * pow( 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 )
{
FLI_IMAP *flmap = fl_imap,
*flmape = flmap + builtin;
for ( ; flmap < flmape; flmap++ )
if ( col == ( long ) 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 = 0,
g = 0,
b = 0;
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 = 0,
g = 0,
b = 0;
fl_query_imap( color, &r, &g, &b );
return rgb2gray( r, g, b ) + 0.1;
}
/***************************************
***************************************/
int
fl_get_namedcolor( const char * s )
{
FLI_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 );
}
/*
* Local variables:
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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