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package Color::Palette::Types 0.100004; |
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use strict; |
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use warnings; |
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# ABSTRACT: type constraints for use with Color::Palette |
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#pod =head1 BEAR WITH ME |
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#pod |
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#pod I'm not yet sure how best to document a type library. |
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#pod |
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#pod =head1 TYPES |
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#pod |
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#pod The following types are defined: |
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#pod |
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#pod Color - a Graphics::Color object |
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#pod Palette - a Color::Palette::Color object |
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#pod ColorName - a valid color name: /\A[a-z][-a-z0-9]*\z/i |
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#pod |
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#pod ColorDict - a hash mapping ColorName to Color |
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#pod RecursiveColorDict - a hash mapping ColorName to (Color | ColorName) |
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#pod |
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#pod HexColorStr - a string like #000 or #ababab |
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#pod ArrayRGB - an ArrayRef of three Bytes |
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#pod Byte - and Int from 0 to 255 |
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#pod |
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#pod Colors can be coerced from ArrayRGB or HexColorStr, and dicts of colors try to |
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#pod coerce, too. |
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#pod |
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#pod =cut |
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use Graphics::Color::RGB; |
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use List::Util 1.33 qw(all); |
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use MooseX::Types -declare => [ qw( |
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Color Palette |
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ColorName |
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ColorDict |
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RecursiveColorDict |
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HexColorStr |
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ArrayRGB |
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Byte |
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) ]; |
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use MooseX::Types::Moose qw(Str Int ArrayRef HashRef); |
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class_type Color, { class => 'Graphics::Color::RGB' }; |
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class_type Palette, { class => 'Color::Palette' }; |
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subtype ColorName, as Str, where { /\A[a-z][-a-z0-9]*\z/i }; |
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subtype HexColorStr, as Str, where { /\A#?(?:[0-9a-f]{3}|[0-9a-f]{6})\z/i }; |
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subtype Byte, as Int, where { $_ >= 0 and $_ <= 255 }; |
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subtype ArrayRGB, as ArrayRef[Byte], where { @$_ == 3 }; |
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coerce Color, from ArrayRGB, via { |
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Graphics::Color::RGB->new({ |
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red => $_->[0] / 255, |
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green => $_->[1] / 255, |
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blue => $_->[2] / 255, |
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}) |
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}; |
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coerce Color, from HexColorStr, via { |
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my $copy = $_; |
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$copy =~ s/\A#//; |
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my $width = length $copy == 3 ? 2 : 1; |
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my @rgb = $copy =~ /\A([0-9a-f]{1,2})([0-9a-f]{1,2})([0-9a-f]{1,2})\z/; |
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Graphics::Color::RGB->new({ |
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red => hex($rgb[0] x $width) / 255, |
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green => hex($rgb[1] x $width) / 255, |
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blue => hex($rgb[2] x $width) / 255, |
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}); |
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}; |
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subtype ColorDict, as HashRef[ Color ], where { |
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all { is_ColorName($_) } keys %$_; |
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}; |
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coerce ColorDict, from HashRef, via { |
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my $input = $_; |
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return { map {; $_ => to_Color($input->{$_}) } keys %$_ }; |
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}; |
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subtype RecursiveColorDict, as HashRef[ Color | ColorName ], where { |
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all { is_ColorName($_) } keys %$_ |
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}; |
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coerce RecursiveColorDict, from HashRef, via { |
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my $input = $_; |
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my %output; |
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for my $name (keys %$input) { |
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my $val = $input->{ $name }; |
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$output{ $name } = $val, next unless ref $val or is_HexColorStr($val); |
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$output{ $name } = to_Color($val); |
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} |
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return \%output |
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}; |
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1; |
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__END__ |
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=pod |
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=encoding UTF-8 |
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=head1 NAME |
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Color::Palette::Types - type constraints for use with Color::Palette |
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=head1 VERSION |
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version 0.100004 |
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=head1 PERL VERSION |
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This library should run on perls released even a long time ago. It should work |
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on any version of perl released in the last five years. |
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Although it may work on older versions of perl, no guarantee is made that the |
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minimum required version will not be increased. The version may be increased |
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for any reason, and there is no promise that patches will be accepted to lower |
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the minimum required perl. |
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=head1 BEAR WITH ME |
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I'm not yet sure how best to document a type library. |
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=head1 TYPES |
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The following types are defined: |
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Color - a Graphics::Color object |
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Palette - a Color::Palette::Color object |
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ColorName - a valid color name: /\A[a-z][-a-z0-9]*\z/i |
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ColorDict - a hash mapping ColorName to Color |
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RecursiveColorDict - a hash mapping ColorName to (Color | ColorName) |
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HexColorStr - a string like #000 or #ababab |
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ArrayRGB - an ArrayRef of three Bytes |
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Byte - and Int from 0 to 255 |
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Colors can be coerced from ArrayRGB or HexColorStr, and dicts of colors try to |
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coerce, too. |
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151
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=head1 AUTHOR |
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Ricardo SIGNES <cpan@semiotic.systems> |
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=head1 COPYRIGHT AND LICENSE |
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This software is copyright (c) 2022 by Ricardo SIGNES. |
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This is free software; you can redistribute it and/or modify it under |
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the same terms as the Perl 5 programming language system itself. |
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=cut |