#!/usr/bin/perl
# Author: Todd Larason <jtl@molehill.org>
# $XFree86: xc/programs/xterm/vttests/256colors2.pl,v 1.1 1999/07/11 08:49:54 dawes Exp $

# use the resources for colors 0-15 - usually more-or-less a
# reproduction of the standard ANSI colors, but possibly more
# pleasing shades

# colors 16-231 are a 6x6x6 color cube
for ( $red = 0 ; $red < 6 ; $red++ ) {
    for ( $green = 0 ; $green < 6 ; $green++ ) {
        for ( $blue = 0 ; $blue < 6 ; $blue++ ) {
            printf( "\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
                    16 + ( $red * 36 ) + ( $green * 6 ) + $blue,
                    int( $red * 42.5 ),
                    int( $green * 42.5 ),
                    int( $blue * 42.5 ) ) ;
        }
    }
}

# colors 232-255 are a grayscale ramp, intentionally leaving out
# black and white
for ( $gray = 0 ; $gray < 24 ; $gray++ ) {
    $level = ( $gray * 10 ) + 8 ;
    printf( "\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
            232 + $gray,
            $level, $level, $level ) ;
}

# display the colors

# first the system ones:
print "System colors:\n" ;
for ( $color = 0 ; $color < 8 ; $color++ ) {
    print "\x1b[48;5;${color}m  " ;
}
print "\x1b[0m\n" ;
for ( $color = 8 ; $color < 16 ; $color++ ) {
    print "\x1b[48;5;${color}m  " ;
}
print "\x1b[0m\n\n" ;

# now the color cube
print "Color cube, 6x6x6:\n" ;
for ( $green = 0 ; $green < 6 ; $green++ ) {
    for ( $red = 0 ; $red < 6 ; $red++ ) {
        for ( $blue = 0 ; $blue < 6 ; $blue++ ) {
            $color = 16 + ( $red * 36 ) + ( $green * 6 ) + $blue ;
            print "\x1b[48;5;${color}m  " ;
        }
        print "\x1b[0m " ;
    }
    print "\n" ;
}

# now the grayscale ramp
print "Grayscale ramp:\n" ;
for ( $color = 232 ; $color < 256 ; $color++ ) {
    print "\x1b[48;5;${color}m  " ;
}
print "\x1b[0m\n" ;