87 lines
2.0 KiB
Perl
87 lines
2.0 KiB
Perl
#!/usr/bin/perl
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# $XTermId: 256colors2.pl,v 1.8 2007/07/17 00:44:54 tom Exp $
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# Authors: Todd Larason <jtl@molehill.org>
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# Thomas E Dickey
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#
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# use the resources for colors 0-15 - usually more-or-less a
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# reproduction of the standard ANSI colors, but possibly more
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# pleasing shades
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use strict;
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use Getopt::Std;
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our ($opt_r);
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&getopts('r') || die("Usage: $0 [-r]");
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our ($red, $green, $blue);
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our ($gray, $level, $color);
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sub map_cube($) {
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my $value = $_[0];
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$value = (5 - $value) if defined($opt_r);
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return $value;
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}
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sub map_gray($) {
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my $value = $_[0];
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$value = (23 - $value) if defined($opt_r);
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return $value;
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}
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# colors 16-231 are a 6x6x6 color cube
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for ($red = 0; $red < 6; $red++) {
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for ($green = 0; $green < 6; $green++) {
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for ($blue = 0; $blue < 6; $blue++) {
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printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
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16 + (map_cube($red) * 36) + (map_cube($green) * 6) + map_cube($blue),
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($red ? ($red * 40 + 55) : 0),
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($green ? ($green * 40 + 55) : 0),
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($blue ? ($blue * 40 + 55) : 0));
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}
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}
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}
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# colors 232-255 are a grayscale ramp, intentionally leaving out
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# black and white
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for ($gray = 0; $gray < 24; $gray++) {
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$level = (map_gray($gray) * 10) + 8;
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printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
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232 + $gray, $level, $level, $level);
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}
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# display the colors
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# first the system ones:
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print "System colors:\n";
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for ($color = 0; $color < 8; $color++) {
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print "\x1b[48;5;${color}m ";
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}
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print "\x1b[0m\n";
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for ($color = 8; $color < 16; $color++) {
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print "\x1b[48;5;${color}m ";
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}
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print "\x1b[0m\n\n";
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# now the color cube
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print "Color cube, 6x6x6:\n";
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for ($green = 0; $green < 6; $green++) {
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for ($red = 0; $red < 6; $red++) {
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for ($blue = 0; $blue < 6; $blue++) {
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$color = 16 + ($red * 36) + ($green * 6) + $blue;
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print "\x1b[48;5;${color}m ";
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}
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print "\x1b[0m ";
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}
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print "\n";
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}
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# now the grayscale ramp
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print "Grayscale ramp:\n";
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for ($color = 232; $color < 256; $color++) {
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print "\x1b[48;5;${color}m ";
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}
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print "\x1b[0m\n";
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