256colors2.pl

#!/usr/bin/perl

# use strict;
# use warnings;
# Author: Todd Larason <jtl@molehill.org>
# $XFree86: xc/programs/xterm/vttests/256colors2.pl,v 1.2 2002/03/26 01:46:43 dickey 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) + $blue,
        # ($red ? ($red * 40 + 55) : 0),
        # ($green ? ($green * 40 + 55) : 0),
        # ($blue ? ($blue * 40 + 55) : 0));
    # }
  # }
# }
# 
# # colors 232-255 are a grayscale ramp, intentionally leaving out
# # black and white
# for ($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

sub printColor {
  my ($color) = @_;
  my $colStr = sprintf ("%-3d", $color);
  print "\x1b[48;05;${color}m $colStr ";
}

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


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