<(common.inc.plp)><:
Html({
- title => 'terminal colour cheat sheet',
- version => '1.0',
- description => [
+ 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 code terminal console escape table xterm rxvt
+ 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'],
});
+my @draw = map { [$_, s/\W+\z//] } grep { $_ } split m(/),
+ $get{img} // exists $get{img} && 'compile.png';
+
+my @termlist;
+push @termlist, split /\W+/, $Request || 'default';
+
+say "<h1>$_</h1>\n" for $Request ? 'Colour palettes' : 'Terminal colours';
+
+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.';
+}
:>
-<h1>Terminal colours</h1>
<div class="section">
<:
-use Shiar_Sheet::Colour '1.01';
+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;
+ my $name = shift // return "<td>\n";
my $col = Shiar_Sheet::Colour->new(@_);
my $minhex = $col->rgb24;
my $css = '#' . $col->rgb48;
my $out = sprintf('<td title="%s" style="%s">%s',
join(',', map { int } @$col),
- "background:$css; color:$inverse; padding:0 1ex",
+ "background:$css; color:$inverse",
$name,
);
- $out .= sprintf '<td style="%s"><code>%s</code>', "background:$_; color:$css", $minhex
- for @$sample;
+ $out .= sprintf('<samp style="%s"><small>%s</small></samp>',
+ "background:$_; color:$css", $minhex
+ ) for @$sample;
return "$out\n";
}
-my %col = (
- html => [
- sprintf('<a title="%s" href="%s">html</a>',
- 'HTML keywords (inherited by CSSā„2.1 and SVG), mostly identical to X11',
- 'http://www.w3.org/TR/css3-color/#html4',
- ),
- qw/000000:black 800000:maroon 008000:green 808000:olive
- 000080:navy 800080:purple 008080:cyan C0C0C0:silver
- 808080:gray FF0000:red 00FF00:lime FFFF00:yellow
- 0000FF:blue FF00FF:fuchsia 00FFFF:aqua FFFFFF:white /,
- ],
- cga => [
- undef, # linux console, kde?
- qw/000000 AA0000 00AA00 AA5500 0000AA AA00AA 00AAAA AAAAAA
- 555555 FF5555 55FF55 FFFF55 5555FF FF55FF 55FFFF FFFFFF/,
-# qw/reset bold dim italic underline blink fastblink reverse hidden/,
- ],
- xterm => [
- undef, # rxvt except for blues
- qw/000000 CC0000 00CC00 CCCC00 4682B4 CC00CC 00CCCC E5E5E5
- 4C4C4C FF0000 00FF00 FFFF00 1E90FF FF00FF 00FFFF FFFFFF/,
- ],
- tango => [
- undef, # default Gnome theme
- qw/2E3436 CC0000 4E9A06 C4A000 3465A4 75507B 06989A D3D7CF
- 555753 EF2929 8AE234 FCE94F 729FCF AD7FA8 34E2E2 EEEEEC/,
- ],
- xkcd => [
- sprintf('<a title="%s" href="%s">xkcd</a>',
- 'human averages in xkcd survey results',
- 'http://blog.xkcd.com/2010/05/03/color-survey-results/',
- ),
- qw/000000:black 650021:maroon 15b01a:green 6e750e:olive
- 01153e:navy 7e1e9c:purple 029386:teal c5c9c7:silver
- 929591:grey e50000:red aaff32:lime ffff14:yellow
- 0343df:blue ed0dd9:fuchsia 00ffff:cyan ffffff:white /,
- ],
- android => [
- sprintf('<a href="%s" title="%s">android</a>',
- 'http://developer.android.com/guide/practices/ui_guidelines/icon_design.html',
- 'recommended colour palette for Android icons',
- ),
- qw/FFFFFF:white BFBFBF:light 808080:medium 404040:dark
- 000000:black 6699FF:blue1 3366CC:blue2 003399:blue3
- 99CC33:green1 00CC00:green2 669933:green3 FFCC00:orange1
- FF9900:orange2 FF6600:orange3 CC0000:red /,
- ],
- app => [
- 'Term.app',
- qw/000000 C23621 25BC24 ADAD27 492EE1 D338D3 33BBC8 CBCCCD
- 818383 FC391F 31E722 EAEC23 5833FF F935F8 14F0F0 E9EBEB /,
- ],
- putty => [
- 'PuTTY',
- qw/000000 BB0000 00BB00 BBBB00 0000BB BB00BB 00BBBB BBBBBB
- 555555 FF5555 55FF55 FFFF55 5555FF FF55FF 55FFFF FFFFFF /,
- ],
- slutty => [
- sprintf('<a href="%s" title="%s">SluTTY</a>',
- 'http://www.npjh.com/slutty.html',
- 'PuTTY fork with light colour scheme',
+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 )
),
- qw/000000 9C1D1D 6C9446 AC9A47 335786 8F6496 486768 E0DCDC
- 2F2F2F CD5757 8FC35B D1C45E 5C81A9 BC95B7 76CBCB EEEEEC /,
- ],
- mac2 => [
- 'MacII',
- qw/FFFFFF FBF305 FF6403 DD0907 F20884 4700A5 0000D3 02ABEA
- 1FB714 006412 562C05 90713A C0C0C0 808080 404040 000000 /,
- ],
- risc => [
- 'RISC', # v2/3
- qw/FFFFFF DDDDDD BBBBBB 999999 777777 555555 333333 000000
- 004499 EEEE00 00CC00 DD0000 EEEEBB 558800 FFBB00 00BBFF /,
- ],
- c64 => [
- 'C=64', # commodore 64/128
- map { Shiar_Sheet::Colour->newyuv($_)->rgb48 }
- qw/008080 FF8080 4F4FF5 9FB00A 5FDADA 7F2525 3FFF80 BF0080
- 5F25DA 3F0AB0 7F4FF5 4F8080 778080 BF2525 77FF80 9F8080 /
- ],
- msx => [
- 'MSX',
- map { s{([0-7])}{sprintf '%02X', $1 / 7 * 255}egr }
- qw/ 000 000 161 373 117 237 511 267
- 711 733 661 663 141 625 555 777 /,
- ],
-);
-
-for my $term (qw/cga xterm tango app html xkcd/) {
- print '<table>', "\n";
- printf "<caption>%s</caption>\n", $col{$term}[0] || $term;
- for my $num (1 .. $#{ $col{$term} }) {
- my ($rgb, $name) = split /:/, $col{$term}[$num], 2;
- $name ||= $num - 1;
- $name = [ $name, ['#333'] ] if $term eq 'xkcd';
- print '<tr>', colcell($name, $rgb);
+ $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";
}
- print "</table>\n\n";
-}
-:></div>
-<hr>
+ if (my $palette = $info->{list}) {
+ my $colours = colorder($palette, $reorder);
-<div class="section">
-<h2>88-colour space</h2>
-<:
-for my $r (0 .. 3) {
- print '<table>';
- for my $g (0 .. 3) {
- print '<tr>';
- for my $b (0 .. 3) {
- my $index = $r*4*4 + $g*4 + $b + 16;
- print colcell($index, map {(0, 139, 205, 255)[$_]} $r, $g, $b);
+ 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";
}
- print "</table>\n";
}
-print "\n";
-print '<table><tr>';
-print colcell(80+$_, (($_ + 2 + ($_>0)) * 255/11) x 3) for 0 .. 7;
-print "</table>\n\n";
+sub colorder {
+ my ($palette, $reorder) = @_;
+ return [ map { $palette->[$_] =~ s/:(?![^:])|$/:$_/r } @{$reorder} ]
+ if $reorder;
+ return $palette;
+}
-:></div>
-<: if ($ENV{PATH_INFO} =~ /256/) { :>
-<hr>
+sub coltable_hsv {
+ my ($dim, $rgbval, $greyramp) = @_;
-<div class="section">
-<h2>256-colour space</h2>
-<:
-for my $r (0 .. 5) {
- print '<table>';
- for my $g (0 .. 5) {
- print '<tr>';
- for my $b (0 .. 5) {
- my $index = $r*6*6 + $g*6 + $b + 16;
- print colcell($index, map { $_ && $_*40 + 55 } $r, $g, $b);
+ 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) ];
+ }
}
}
- print "</table>\n";
-}
-print "\n";
- print '<table>';
-for my $row (0, 12) {
- print '<tr>';
- print colcell(232+$_, ($_*10 + 8) x 3) for $row .. $row+11;
+ 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 $out;
}
- print "</table>\n";
-print "\n";
+coltable($_) for @termlist;
:></div>
-<: } :>
<hr>