tools/256colors.pl

   1 #!/usr/bin/perl
   2 # Author: Todd Larason <jtl@molehill.org>
   3 # $XFree86: xc/programs/xterm/vttests/256colors2.pl,v 1.2 2002/03/26 01:46:43 dickey Exp $
   4
   5 # use the resources for colors 0-15 - usually more-or-less a
   6 # reproduction of the standard ANSI colors, but possibly more
   7 # pleasing shades
   8
   9 # colors 16-231 are a 6x6x6 color cube
  10 for ($red = 0; $red < 6; $red++) {
  11     for ($green = 0; $green < 6; $green++) {
  12         for ($blue = 0; $blue < 6; $blue++) {
  13             printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
  14                    16 + ($red * 36) + ($green * 6) + $blue,
  15                    ($red ? ($red * 40 + 55) : 0),
  16                    ($green ? ($green * 40 + 55) : 0),
  17                    ($blue ? ($blue * 40 + 55) : 0));
  18         }
  19     }
  20 }
  21
  22 # colors 232-255 are a grayscale ramp, intentionally leaving out
  23 # black and white
  24 for ($gray = 0; $gray < 24; $gray++) {
  25     $level = ($gray * 10) + 8;
  26     printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
  27            232 + $gray, $level, $level, $level);
  28 }
  29
  30
  31 # display the colors
  32
  33 # first the system ones:
  34 print "System colors:\n";
  35 for ($color = 0; $color < 8; $color++) {
  36     print "\x1b[48;5;${color}m  ";
  37 }
  38 print "\x1b[0m\n";
  39 for ($color = 8; $color < 16; $color++) {
  40     print "\x1b[48;5;${color}m  ";
  41 }
  42 print "\x1b[0m\n\n";
  43
  44 # now the color cube
  45 print "Color cube, 6x6x6:\n";
  46 for ($green = 0; $green < 6; $green++) {
  47     for ($red = 0; $red < 6; $red++) {
  48         for ($blue = 0; $blue < 6; $blue++) {
  49             $color = 16 + ($red * 36) + ($green * 6) + $blue;
  50             print "\x1b[48;5;${color}m  ";
  51         }
  52         print "\x1b[0m ";
  53     }
  54     print "\n";
  55 }
  56
  57
  58 # now the grayscale ramp
  59 print "Grayscale ramp:\n";
  60 for ($color = 232; $color < 256; $color++) {
  61     print "\x1b[48;5;${color}m  ";
  62 }
  63 print "\x1b[0m\n";