Html({
title => 'terminal colour cheat sheet',
- version => '1.0',
+ version => '1.1',
description => [
"Index of all terminal/console colour codes,",
"with an example result of various environments.",
stylesheet => [qw'light dark'],
});
+my @draw = map { [$_, s/\W+\z//] } grep { $_ } split m(/),
+ $get{img} // exists $get{img} && 'indi.png';
+
my @termlist;
push @termlist, split /\W+/, $ENV{PATH_INFO} || 'default';
-my %termgroup = (
- default => [qw( ansi xkcd ansi88 )],
- more => [qw( ansi legacy ansi256 )],
- msx => [qw( msx1 msx2 arnejmp )],
- ansi => [qw( cga xterm tango app html )],
- legacy => [qw( c64 msx2 mac2 risc arnegame cpc )],
-);
-@{$_} = map { $termgroup{$_} ? @{ $termgroup{$_} } : $_ } @{$_}
- for values %termgroup, \@termlist;
-
:>
<h1>Terminal colours</h1>
as implemented by various systems and programs.
<:
print
- "@termlist" ne "@{ $termgroup{default} }" ? 'Additional palettes are included as specified.' :
+ "@termlist" ne 'default' ? 'Additional palettes are included as specified.' :
'Also see <a href="/termcol/more">8-bit legacy hardware</a> palettes.';
:>
</p>
<div class="section">
<:
-use Shiar_Sheet::Colour '1.03';
+use Shiar_Sheet::Colour 1.04;
use List::Util qw( min max );
+use POSIX qw( ceil );
my $palettes = do 'termcol.inc.pl';
die "Cannot open palette data: $_\n" for $@ || $! || ();
+my $more = do 'termcol-xcolor.inc.pl';
+$palettes = {%$palettes, %$more};
sub colcell {
- my $name = shift // return "<td colspan=3>\n";
+ 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";
}
-for my $term (@termlist) {
+sub img_egapal {
+ my ($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};
+ }
+
ref $info eq 'HASH' or next;
+
my $caption = $info->{name} // $term;
$caption = sprintf('<%s %s>%s</%1$s>',
$info->{href} ? 'a' : 'span',
) if $info->{href} or $info->{title};
if (my $mapinfo = $info->{rgbmap}) {
- print '<table class="mapped">'."\n";
+ print '<table class="color mapped">'."\n";
printf "<caption>%s</caption>\n", $caption;
print coltable_hsv(@{$mapinfo});
print "</table>\n\n";
}
- if (my $colours = $info->{list}) {
- if (my $reorder = $info->{ansiorder} and $get{v}) {
- $colours = [ map { $colours->[$_] =~ s/:|$/:$_/r } @{$reorder} ];
+ if (my $table = $info->{table}) {
+ print '<table class="color mapped">'."\n";
+ printf "<caption>%s</caption>\n", $caption;
+ for my $row (@$table) {
+ 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=$width>", img_egapal(\@imgpal, @{$_});
}
+ }
+ print "</table>\n\n";
+ }
- print '<table>', "\n";
+ if (my $palette = $info->{list}) {
+ my $order = $get{order} && $get{order}.'order';
+ my $colours = colorder($palette,
+ $info->{$order} // $palettes->{ $info->{parent} }->{$order}
+ );
+
+ my $rows = 8;
+ my $columns = ceil(@{$palette} / $rows);
+
+ print '<table class=color>', "\n";
printf "<caption>%s</caption>\n", $caption;
- for my $num (0 .. $#{$colours}) {
- my ($rgb, $name) = split /:/, $colours->[$num], 3;
- $name ||= $num;
- $name = [ $name, [] ] if $term =~ /^msx/ and !$num;
- $name = [ $name, ['#333'] ] if $term eq 'xkcd';
- print '<tr>', colcell($name, $rgb);
+ 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 $term =~ /^msx/ and !$num;
+ $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($imgpal, @{$_});
}
print "</table>\n\n";
}
}
+sub colorder {
+ my ($palette, $reorder) = @_;
+ return [ map { $palette->[$_] =~ s/:(?![^:])|$/:$_/r } @{$reorder} ]
+ if $reorder;
+ return $palette;
+}
+
sub coltable_hsv {
my ($dim, $rgbval, $greyramp) = @_;
my $vmax = $dim - 1;
my $smax = $dim - 1;
$rgbval ||= sub { join('', @_), map { int $_ * 255 / $vmax } @_ };
- $greyramp ||= [];
- my %greymap; # name => value
+ my @greymap = @{$greyramp || []}; # [name, r, g=l, b]
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 $s = abs(min(@rgb) - max(@rgb));
+ my ($h, $s, $v) = Shiar_Sheet::Colour->new(@rgb)->hsv;
if (!$s) {
- my ($index, $l) = $rgbval->(@rgb);
- $greymap{$index} = $l;
- next;
+ 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;
}
my $out = '';
- $out .= sprintf '<colgroup span=%d>', 3 * @{$_} for @colmap;
+ $out .= sprintf '<colgroup span=%d>', scalar @{$_} 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 { @{$_} } @colmap;
+ $out .= colcell(@$_) for map { $_->[$h] } map { reverse @{$_} } @colmap;
}
- $offset += $dim ** 3;
- $greymap{$offset++} = $_ for @{$greyramp};
+ 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});
+ }
+ }
- $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);
+ 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 $out;
}
+coltable($_) for @termlist;
:></div>
<hr>
git.shiar.nl / sheet.git / blobdiff