X-Git-Url: http://git.shiar.nl/sheet.git/blobdiff_plain/8b8c77dbf30f70a1e8ade679a62f08e130f959a2..d7efdac99433a38f91de80792fc037351798b267:/termcol.plp diff --git a/termcol.plp b/termcol.plp index 446b9c5..9411ba4 100644 --- a/termcol.plp +++ b/termcol.plp @@ -1,111 +1,192 @@ -<: -use utf8; -use strict; -use warnings; -use open IO => ':utf8'; -use List::Util 'min'; +<(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'], +}); + +:> +

Terminal colours

-our $VERSION = 'v1.0'; +

+ANSI (VT100, ISO-6429) 16-colour text palette +as implemented by various systems and programs. +<: +print + !exists $get{v} ? 'Also see 8-bit legacy hardware palettes.' : + 'Also included are 8-bit legacy hardware palettes.'; +:> +

-$header{content_type} = 'text/html; charset=utf-8'; +

+<: +use Shiar_Sheet::Colour '1.03'; +use List::Util qw( min max ); -:> - +my $palettes = do 'termcol.inc.pl'; +die "Cannot open palette data: $_\n" for $@ || $! || (); - -terminal colour cheat sheet - - - +sub colcell { + my $name = shift // return "\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; - -

Terminal colours

+ my $sample = [ qw(#000 #FFF) ]; + ($name, $sample) = @$name if ref $name eq 'ARRAY'; -

%s

', "\n"; print '', "\n"; - print "\n"; - for my $num (0 .. 15) { - my $rgb = $col{$term}[$num + 2]; - print '', - colcell($term eq 'html' ? $col{-name}[$num] : $num, $rgb, $col{$term}[0]); + printf "\n", $caption; + for my $num (0 .. $#index) { + my ($rgb, $name) = split /:/, $index[$num], 3; + $name ||= $num; + $name = [ $name, ['#333'] ] if $term eq 'xkcd'; + print '', colcell($name, $rgb); } - print "
$term
%s

+:>

-

88-colour space

<: -for my $r (0 .. 3) { - print '

'; - for my $g (0 .. 3) { - print ''; - 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) ]; + } } } + + my $out = ''; + $out .= sprintf '', 3 * @{$_} for @colmap; + my $huerow = $colmap[0][0]; # first {$_} map { @{$_} } @colmap; + for my $h (grep { $huerow->[$_] } 0 .. $#{$huerow}) { + $out .= ''; + $out .= colcell(@$_) for map { $_->[$h] } map { @{$_} } @colmap; + } + + $offset += $dim ** 3; + $greymap{$offset++} = $_ for @{$greyramp}; + + $out .= ''; + my $col = 0; + my $colbreak = scalar map { @$_ } @colmap; # same width as hue rows + for my $num (sort { $greymap{$a} <=> $greymap{$b} } keys %greymap) { + $out .= '' unless $col++ % $colbreak; + $out .= colcell($num, ($greymap{$num}) x 3); + } + + return $out; +} + +{ + print "

88-colour space

\n"; + print "

\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 "

\n"; } -print "\n"; -print '

', map { colcell(80, ($_) x 3) } 46, 92, 115, 139, 162, 185, 208, 231; -print "

\n\n"; -:>

-

+if ($ENV{PATH_INFO} =~ /256/) { + print "

256-colour space

\n"; + print "\n"; + print coltable_hsv(6, + sub { + $_[2] + 6 * ($_[1] + 6 * $_[0]) + 16, + map { $_ && $_*40 + 55 } @_ + }, + [ map { $_ * 10 + 8 } 0 .. 23 ], + ); + print "

\n"; +} +:> +