+<(common.inc.plp)><:
+
+Html({
+ title => 'terminal colour cheat sheet',
+ version => '1.0',
+ description => [
+ "Index of all terminal/console colour codes,",
+ "with an example result of various environments.",
+ ],
+ keywords => [qw'
+ color code terminal console escape table xterm rxvt
+ '],
+ data => ['termcol.inc.pl'],
+ stylesheet => [qw'light dark'],
+});
+
+:>
+<h1>Terminal colours</h1>
+
+<p>
+<span title="ECMA-48">ANSI</span> (VT100, ISO-6429) 16-colour text palette
+as implemented by various systems and programs.
<:
-use utf8;
-use strict;
-use warnings;
-use open IO => ':utf8';
-use List::Util 'min';
+print
+ !exists $get{v} ? 'Also see <a href="?v">8-bit legacy hardware</a> palettes.' :
+ 'Also included are 8-bit legacy hardware palettes.';
+:>
+</p>
-our $VERSION = 'v1.0';
+<div class="section">
+<:
+use Shiar_Sheet::Colour '1.03';
+use List::Util qw( min max );
-$header{content_type} = 'text/html; charset=utf-8';
+my $palettes = do 'termcol.inc.pl';
+die "Cannot open palette data: $_\n" for $@ || $! || ();
-:><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
- "http://www.w3.org/TR/html4/loose.dtd">
-<html>
+sub colcell {
+ my $name = shift // return "<td colspan=3>\n";
+ my $col = Shiar_Sheet::Colour->new(@_);
+ my $minhex = $col->rgb24;
+ my $css = '#' . $col->rgb48;
+ my $inverse = '#' . sprintf('%X', $col->luminance/255 < .3 ? 12 : 0) x 3;
-<head>
-<title>terminal colour cheat sheet</title>
-<meta http-equiv="content-type" content="utf-8">
-<link rel="stylesheet" type="text/css" media="all" href="/base.css">
-</head>
+ my $sample = [ qw(#000 #FFF) ];
+ ($name, $sample) = @$name if ref $name eq 'ARRAY';
-<body>
-<h1>Terminal colours</h1>
+ my $out = sprintf('<td title="%s" style="%s">%s',
+ join(',', map { int } @$col),
+ "background:$css; color:$inverse; padding:0 1ex",
+ $name,
+ );
+ $out .= sprintf '<td style="%s"><code>%s</code>', "background:$_; color:$css", $minhex
+ for @$sample;
+ return "$out\n";
+}
-<table>
-<:
-sub luminance {
- # perceived brightness (using ITU-R recommendation 601 luma co-efficients)
- my ($r, $g, $b) = @_;
- return $r*.299 + $g*.587 + $b*.114;
+if ($get{v}) {
+ my %reorder = (
+ arnegame => [ 0,5,9,12 , 3,6,10,13,1 , 4,7,8,11,14,15,2 ],
+ arnegame => [ 0,3,10,6,12,9,13,1 , 5,7,11,8,14,4,15,2 ],
+ c64 => [ 0,2,5,9,6,4,3,15 , 11,10,13,7,14,8,12,1 ],
+ msx2 => [ 0,6,2,10,4,13,7,14 , 1,8,3,11,5,9,12,15 ],
+ risc => [ 7,11,13,14,8,12,15,1, 6,5,10,9,4,3,2,0],
+ mac2 => [ 15,3,9,11,6,5,7,12 , 14,2,8,1,13,4,10,0 ],
+ );
+ $reorder{$_} = $reorder{msx2} for qw( msx1 arnejmp );
+ while (my ($name, $order) = each %reorder) {
+ for my $pal ( $palettes->{$name}) {
+ $pal = [ map { $pal->[$_ + 1] =~ s/:|$/:$_/r } -1, @{$order} ];
+ }
+ }
}
-sub colcell {
- my $id = shift;
- my @rgb = @_ >= 3 ? @_ : (map {hex} $_[0] =~ /(..)/g);
- my $rgb24 = '';
- $rgb24 .= sprintf '%X', min($_ / 17 + .5, 15) for @rgb[0..2];
- my $rgb48 = '';
- $rgb48 .= sprintf '%02X', $_ for @rgb[0..2];
- my $inverse = sprintf('%X', luminance(@rgb)/255 < .3 ? 12 : 0) x 3;
- return sprintf '<td style="%s; padding:0 1ex">%s<td style="%s">%s<td style="%s">%s',
- "background:#$rgb48; color:#$inverse",
- $id,
- "background:#000; color:#$rgb48",
- $rgb24,
- "background:#FFF; color:#$rgb48",
- $rgb24,
+my @termlist = qw( cga xterm tango app html xkcd );
+push @termlist, qw( c64 msx2 mac2 risc arnegame ) if exists $get{v};
+for my $term (@termlist) {
+ my ($info, @index) = @{ $palettes->{$term} };
+ my $caption = $info->{name} // $term;
+ $caption = sprintf('<%s %s>%s</%1$s>',
+ $info->{href} ? 'a' : 'span',
+ join(' ',
+ map { sprintf '%s="%s"', $_, $info->{$_} }
+ grep { defined $info->{$_} }
+ qw( href title )
+ ),
+ $caption,
+ ) if $info->{href} or $info->{title};
+
+ print '<table>', "\n";
+ printf "<caption>%s</caption>\n", $caption;
+ for my $num (0 .. $#index) {
+ my ($rgb, $name) = split /:/, $index[$num], 3;
+ $name ||= $num;
+ $name = [ $name, ['#333'] ] if $term eq 'xkcd';
+ print '<tr>', colcell($name, $rgb);
+ }
+ print "</table>\n\n";
}
-my %col = (
- -name => [
- qw/black maroon green olive navy purple cyan silver
- gray red lime yellow blue fuchsia aqua white/,
- qw/reset bold dim italic underline blink fastblink
- reverse hidden/,
- ],
- html => [
- qw/000000 CCCCCC/,
- qw/000000 800000 008000 808000 000080 800080 008080 C0C0C0
- 808080 FF0000 00FF00 FFFF00 0000FF FF00FF 00FFFF FFFFFF/,
- ],
- cga => [
- qw/000000 CCCCCC/,
- qw/000000 AA0000 00AA00 AA5500 0000AA AA00AA 00AAAA AAAAAA
- 555555 FF5555 55FF55 FFFF55 5555FF FF55FF 55FFFF FFFFFF/,
- ],
- xterm => [
- qw/000000 CCCCCC/,
- qw/000000 CC0000 00CC00 CCCC00 4682B4 CC00CC 00CCCC E5E5E5
- 4C4C4C FF0000 00FF00 FFFF00 1E90FF FF00FF 00FFFF FFFFFF/,
- ],
- tango => [
- qw/000000 CCCCCC/,
- qw/2E3436 CC0000 4E9A06 C4A000 3465A4 75507B 06989A D3D7CF
- 555753 EF2929 8AE234 FCE94F 729FCF AD7FA8 34E2E2 EEEEEC/,
- ],
-);
-
-my @termlist = qw(html cga xterm tango);
-print '<tr>', (map {'<th colspan="3">'.$_} @termlist), "</tr>\n";
-for my $num (0 .. 15) {
- printf('<tr>%s</tr>'."\n",
- join('', map {
- my $rgb = $col{$_}[$num + 2];
- colcell($_ eq 'html' ? $col{-name}[$num] : $num, $rgb, $col{$_}[0])
- } @termlist ),
- );
+if (exists $get{v}) {
+ print "<table class=mapped>\n";
+ print "<caption>Amstrad CPC</caption>\n";
+ print coltable_hsv(3, sub {
+ $_[2] + 3 * ($_[0] + 3 * $_[1]),
+ map { $_ && $_ * 127 + 1 } @_
+ });
+ print "</table>\n\n";
}
-:></table>
+:></div>
+
+<hr>
-<h2>88-colour space</h2>
-<table>
+<div class="section">
<:
-for my $r (0 .. 3) {
- print '<tr>';
- for my $g (0 .. 3) {
- for my $b (0 .. 3) {
- print colcell($r*4*4 + $g*4 + $b + 16, map {(0, 139, 205, 255)[$_]} $r, $g, $b);
+sub coltable_hsv {
+ my ($dim, $rgbval, $greyramp) = @_;
+
+ my $hmax = 2 * $dim * 3; # each face of the rgb cube
+ my $vmax = $dim - 1;
+ my $smax = $dim - 1;
+ $rgbval ||= sub { join('', @_), map { int $_ * 255 / $vmax } @_ };
+ $greyramp ||= [];
+
+ my %greymap; # name => value
+ my @colmap; # saturation => value => hue => [name, r,g,b]
+ my $offset = 16 * ($dim > 3);
+
+ for my $r (0 .. $dim - 1) {
+ for my $g (0 .. $dim - 1) {
+ for my $b (0 .. $dim - 1) {
+ my @rgb = ($r, $g, $b);
+
+ my $h = Shiar_Sheet::Colour->new(@rgb)->hue * $hmax;
+ my $v = max(@rgb);
+ my $s = abs(min(@rgb) - max(@rgb));
+
+ if (!$s) {
+ my ($index, $l) = $rgbval->(@rgb);
+ $greymap{$index} = $l;
+ next;
+ }
+
+ $v = $vmax - $v;
+ $s = $smax - $s - $v;
+
+ $colmap[$s][$v][$h] = [ $rgbval->(@rgb) ];
+ }
}
}
- print "\n";
+
+ my $out = '';
+ $out .= sprintf '<colgroup span=%d>', 3 * @{$_} for @colmap;
+ my $huerow = $colmap[0][0]; # first {$_} map { @{$_} } @colmap;
+ for my $h (grep { $huerow->[$_] } 0 .. $#{$huerow}) {
+ $out .= '<tr>';
+ $out .= colcell(@$_) for map { $_->[$h] } map { @{$_} } @colmap;
+ }
+
+ $offset += $dim ** 3;
+ $greymap{$offset++} = $_ for @{$greyramp};
+
+ $out .= '<tbody>';
+ my $col = 0;
+ my $colbreak = scalar map { @$_ } @colmap; # same width as hue rows
+ for my $num (sort { $greymap{$a} <=> $greymap{$b} } keys %greymap) {
+ $out .= '<tr>' unless $col++ % $colbreak;
+ $out .= colcell($num, ($greymap{$num}) x 3);
+ }
+
+ return $out;
+}
+
+{
+ print "<h2>88-colour space</h2>\n";
+ print "<table class=mapped>\n";
+ print coltable_hsv(4,
+ sub {
+ $_[2] + 4 * ($_[1] + 4 * $_[0]) + 16,
+ map { (0, 139, 205, 255)[$_] } @_
+ },
+ [map { ($_ + 2 + ($_>0)) * 255/11 } 0 .. 7],
+ );
+ print "</table>\n";
+}
+
+if ($ENV{PATH_INFO} =~ /256/) {
+ print "<h2>256-colour space</h2>\n";
+ print "<table class=mapped>\n";
+ print coltable_hsv(6,
+ sub {
+ $_[2] + 6 * ($_[1] + 6 * $_[0]) + 16,
+ map { $_ && $_*40 + 55 } @_
+ },
+ [ map { $_ * 10 + 8 } 0 .. 23 ],
+ );
+ print "</table>\n";
}
-print "\n";
-print '<tr>', map { colcell(80, ($_) x 3) } 46, 92, 115, 139, 162, 185, 208, 231;
-:></table>
+:></div>
+<hr>
git.shiar.nl / sheet.git / blobdiff