-<:
-use utf8;
-use strict;
-use warnings;
-use open IO => ':utf8';
+<(common.inc.plp)><:
+
+if (my ($name) = $Request =~ /(.+)\.gpl\z/) {
+ my $palettes = Data('termcol');
+ my $palette = $palettes->{$name}
+ or Abort("Palette '$name' not found", 404);
+ ref $palette ne 'ARRAY'
+ or Abort("Group contains multiple palettes: ".join(', ', @{$palette}));
+
+ $header{content_type} = 'text/x-gimp-gpl';
+ say 'GIMP Palette';
+ say 'Name: ', $palette->{name} // $name;
+ say 'Columns: 8';
+ say '#';
+ for (@{ $palette->{list} }) {
+ my ($rgb, $name) = split /:/, $_, 3;
+ say join ' ', unpack('C*', pack 'H6', $rgb), $name;
+ }
+ exit;
+}
-our $VERSION = 'v1.0';
+Html({
+ title => ($Request ? 'terminal colour' : 'colour palettes') . ' cheat sheet',
+ version => '1.4',
+ description => [!$Request ? "Comparison of various colour palettes." : (
+ "Index of all terminal/console colour codes,",
+ "with an example result of various environments.",
+ )],
+ keywords => [qw'
+ color colour code terminal console escape table xterm rxvt
+ ansi vt100 8bit 4bit cga ega vga rgb hsv game emulator display
+ '],
+ data => ['termcol.inc.pl'],
+ stylesheet => [qw'light dark'],
+});
-$header{content_type} = 'text/html; charset=utf-8';
+my @draw = map { [$_, s/\W+\z//] } grep { $_ } split m(/),
+ $get{img} // exists $get{img} && 'compile.png';
-:><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
- "http://www.w3.org/TR/html4/loose.dtd">
-<html>
+my @termlist;
+push @termlist, split /\W+/, $Request || 'default';
-<head>
-<title>terminal colour cheat sheet</title>
-<meta http-equiv="content-type" content="utf-8">
-<link rel="stylesheet" type="text/css" media="all" href="/base.css">
-</head>
+say "<h1>$_</h1>\n" for $Request ? 'Colour palettes' : 'Terminal colours';
-<body>
-<h1>Terminal colours</h1>
+say '<p>';
+if ("@termlist" eq 'default') {
+ say '<span title="ECMA-48">ANSI</span> (VT100, ISO-6429) 16-colour text palette';
+ say 'as implemented by various systems and programs.';
+ say 'Also see <a href="/termcol/legacy">8-bit legacy hardware</a> palettes.';
+}
+elsif ("@termlist" eq 'legacy') {
+ say 'Colour palettes of various 8-bit legacy systems and retro games.';
+ say 'Also see <a href="/termcol">ANSI console</a> palettes.';
+}
+else {
+ say 'Comparison of requested colour palettes.';
+}
+:>
-<table>
-<tr><th>#<td>xterm</tr>
+<div class="section">
<:
-my %col = (
- -name => [
- qw/black red green orange blue magenta cyan gray
- gray red green yellow blue magenta cyan white/,
- qw/reset bold dim italic underline blink fastblink
- reverse hidden/,
- ],
- linux => [
- qw/000 CCC/,
- qw/000 A00 0A0 A50 00A A0A 0AA AAA
- 555 F55 5F5 FF5 55F F5F 5FF FFF/,
- ],
- xterm => [
- qw/000 CCC/,
- qw/000 C00 0C0 CC0 4682B4 C0C 0CC E5E5E5
- 4C4C4C F00 0F0 FF0 1E90FF F0F 0FF FFF/,
- ],
- tango => [
- qw/000 CCC/,
- qw/2E3436 CC0000 4E9A06 C4A000 3465A4 75507B 06989A D3D7CF
- 555753 EF2929 8AE234 FCE94F 729FCF AD7FA8 34E2E2 EEEEEC/,
- ],
-);
-
-for my $num (0 .. 15) {
- printf('<tr><th>%d<td>%s%s</tr>'."\n",
- $num,
- $col{-name}[$num],
- join('', map {sprintf '<td style="%s"> ▪ ',
- 'background:#'.$col{$_}[0].'; color:#'.$col{$_}[$num + 2],
- } qw/linux xterm tango/ ),
+use Shiar_Sheet::Colour 1.04;
+use List::Util qw( min max );
+use POSIX qw( ceil );
+
+my $palettes = Data('termcol');
+
+sub colcell {
+ my $name = shift // return "<td>\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;
+
+ my $sample = [ qw(#000 #FFF) ];
+ ($name, $sample) = @$name if ref $name eq 'ARRAY';
+
+ my $out = sprintf('<td title="%s" style="%s">%s',
+ join(',', map { int } @$col),
+ "background:$css; color:$inverse",
+ $name,
);
+ $out .= sprintf('<samp style="%s"><small>%s</small></samp>',
+ "background:$_; color:$css", $minhex
+ ) for @$sample;
+ return "$out\n";
+}
+
+sub img_egapal {
+ my ($palette, $imgfile, $reindex) = @_;
+ return eval {
+ require Imager;
+ require MIME::Base64;
+
+ my @imgpal = map { Imager::Color->new(ref $_ ? @$_ : $_) } @{$palette};
+ state $imgcache = {};
+ my $img = $imgcache->{$imgfile}
+ //= Imager->new(file => "data/palimage/$imgfile")
+ or die Imager->errstr.$/;
+
+ do {
+ if ($reindex) {
+ $img->to_paletted({
+ make_colors => 'none',
+ colors => \@imgpal,
+ translate => 'closest',
+ });
+ }
+ else {
+ @{[ $img->getcolors ]} == @imgpal
+ or die "incompatible palette size\n";
+ $img->setcolors(colors => \@imgpal);
+ $img;
+ }
+ }->write(data => \my $imgdata, type => 'png');
+ return sprintf '<img src="data:image/png;base64,%s">',
+ MIME::Base64::encode_base64($imgdata);
+ } || $@;
+}
+
+sub coltable {
+ my ($term) = @_;
+ my $info = $palettes->{$term};
+
+ if (ref $info eq 'ARRAY') {
+ coltable($_) for @{$info};
+ return;
+ }
+
+ if (ref $info eq 'CODE') {
+ coltable($_) for $info->($palettes);
+ return;
+ }
+
+ ref $info eq 'HASH' or return;
+ my $order = $get{order} && $get{order}.'order';
+ my $reorder = $info->{$order} // $palettes->{ $info->{parent} }->{$order};
+
+ 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 $info->{title};
+
+ if ($info->{table} or $info->{rgbmap}) {
+ say '<table class="color mapped">';
+ say sprintf '<caption>%s</caption>', $caption;
+
+ print coltable_hsv(@{$_}) for $info->{rgbmap} || ();
+
+ if (my $table = $info->{table}) {
+ $table = [ @{$table}[@{$reorder}] ] if $reorder;
+
+ for my $row (@$table) {
+ if (!$row) {
+ say '<tbody>';
+ next;
+ }
+ print '<tr>';
+ print colcell(ref $_ ? @$_ : $_ ? reverse split /:/ : undef) for @$row;
+ }
+
+ if (@draw) {
+ my $width = scalar @{ $table->[0] };
+ my @imgpal = map {
+ [ ref $_ ? @{$_}[1 .. 3] : map {hex} /(..)(..)(..)/ ]
+ } map { @{$_} } @{$table};
+ for (@draw) {
+ print "<tr><td colspan=$width>", img_egapal(\@imgpal, @{$_});
+ }
+ }
+ }
+
+ say "</table>\n";
+ }
+
+ if (my $palette = $info->{list}) {
+ my $colours = colorder($palette, $reorder);
+
+ my $rows = 8;
+ my $columns = ceil(@{$palette} / $rows);
+
+ say '<table class=color>';
+ say sprintf '<caption>%s</caption>', $caption;
+ for my $row (0 .. $rows - 1) {
+ print '<tr>';
+ for my $col (0 .. $columns - 1) {
+ my $num = $row + $col * $rows;
+ my ($rgb, $name) = split /:/, $colours->[$num], 3;
+ $name //= $rgb && $num;
+ $name = [ $name, [] ] if $term =~ /^msx/ and !$name; # no bg for transparency
+ $name = [ $name, ['#333'] ] if $term eq 'xkcd';
+ print colcell($name, $rgb);
+ }
+ }
+
+ for (@draw) {
+ my $imgpal = colorder($palette,
+ $info->{ansiorder} // $palettes->{ $info->{parent} }->{ansiorder}
+ );
+ print "<tr><td colspan=$columns>", img_egapal($imgpal, @{$_});
+ }
+ say "</table>\n";
+ }
+}
+
+sub colorder {
+ my ($palette, $reorder) = @_;
+ return [ map { $palette->[$_] =~ s/:(?![^:])|$/:$_/r } @{$reorder} ]
+ if $reorder;
+ return $palette;
+}
+
+sub coltable_hsv {
+ my ($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 / $vmax } @_ };
+
+ my @greymap = @{$greyramp || []}; # [name, r, g=l, b]
+ my @colmap; # saturation => value => hue => [name, r,g,b]
+
+ 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, $s, $v) = Shiar_Sheet::Colour->new(@rgb)->hsv;
+
+ if (!$s) {
+ if (@greymap) {
+ push @greymap, [ $rgbval->(@rgb) ];
+ next;
+ }
+
+ $h = 1; # greyscale hue
+ $s = $smax - $v + 1; # spread brightness over saturation groups
+ $v &&= $smax # highest saturation
+ or $v = $s = 1; # black at initial column
+ }
+
+ $h *= $hmax;
+ $v = $vmax - $v;
+ $s = $smax - $s - $v;
+
+ $colmap[$s][$v][$h] = [ $rgbval->(@rgb) ];
+ }
+ }
+ }
+
+ my $out = '';
+ $out .= sprintf '<colgroup span=%d>', scalar @{$_} 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 { reverse @{$_} } @colmap;
+ }
+
+ if (@greymap) {
+ $out .= '<tbody>';
+ my $col = 0;
+ my $colbreak = scalar map { @$_ } @colmap; # same width as hue rows
+ for my $cell (sort { $a->[1] <=> $b->[1] || $a->[0] <=> $b->[0] } @greymap) {
+ $out .= '<tr>' unless $col++ % $colbreak;
+ $out .= colcell(@{$cell});
+ }
+ }
+
+ if (@draw) {
+ my @palette = map { [ @{$_}[1 .. 3] ] } @greymap, map {@$_} map {@$_} @colmap;
+ my $tablespan = scalar map { @$_ } @colmap;
+ my $imgdata = img_egapal(\@palette, @{ $draw[0] });
+ $out .= "<tr><td colspan=$tablespan>$imgdata";
+ }
+
+ return $out;
}
-:></table>
+
+coltable($_) for @termlist;
+:></div>
+<hr>
git.shiar.nl / sheet.git / blobdiff