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NAME

App::RGBColorUtils - CLI utilities related to RGB color

VERSION

This document describes version 0.004 of App::RGBColorUtils (from Perl distribution App-RGBColorUtils), released on 2023-12-16.

DESCRIPTION

This distributions provides the following command-line utilities:

FUNCTIONS

mix_2_rgb_colors

Usage:

 mix_2_rgb_colors(%args) -> [$status_code, $reason, $payload, \%result_meta]

Mix two RGB colors.

Examples:

  • Example #1:

     mix_2_rgb_colors(color1 => "000000", color2 => "ffffff"); # -> [200, "OK", "7f7f7f", {}]
  • Example #2:

     mix_2_rgb_colors(color1 => "ff0000", color2 => "00ff99"); # -> [200, "OK", "7f7f4c", {}]

This function is not exported.

Arguments ('*' denotes required arguments):

  • color1* => color::rgb24

    (No description)

  • color2* => color::rgb24

    (No description)

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

mix_rgb_colors

Usage:

 mix_rgb_colors(%args) -> [$status_code, $reason, $payload, \%result_meta]

Mix several RGB colors together.

Examples:

  • Example #1:

     mix_rgb_colors(colors => ["000000", "ffffff", "99cc00"]); # -> [200, "OK", 889955, {}]

This function is not exported.

Arguments ('*' denotes required arguments):

  • colors* => array[color::rgb24]

    (No description)

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

rgb_is_dark

Usage:

 rgb_is_dark(%args) -> [$status_code, $reason, $payload, \%result_meta]

Check if RGB color is dark.

Examples:

  • Example #1:

     rgb_is_dark(color => 112211);

    Result:

     [
       200,
       "OK",
       1,
       {
         "cmdline.exit_code" => 0,
         "cmdline.result"    => "RGB color '112211' is dark",
       },
     ]
  • Example #2:

     rgb_is_dark(color => "ffccff");

    Result:

     [
       200,
       "OK",
       0,
       {
         "cmdline.exit_code" => 1,
         "cmdline.result"    => "RGB color 'ffccff' is NOT dark",
       },
     ]

This function is not exported.

Arguments ('*' denotes required arguments):

  • color* => color::rgb24

    (No description)

  • quiet => true

    (No description)

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

rgb_is_light

Usage:

 rgb_is_light(%args) -> [$status_code, $reason, $payload, \%result_meta]

Check if RGB color is light.

Examples:

  • Example #1:

     rgb_is_light(color => 112211);

    Result:

     [
       200,
       "OK",
       0,
       {
         "cmdline.exit_code" => 1,
         "cmdline.result"    => "RGB color '112211' is NOT light",
       },
     ]
  • Example #2:

     rgb_is_light(color => "ffccff");

    Result:

     [
       200,
       "OK",
       1,
       {
         "cmdline.exit_code" => 0,
         "cmdline.result"    => "RGB color 'ffccff' is light",
       },
     ]

This function is not exported.

Arguments ('*' denotes required arguments):

  • color* => color::rgb24

    (No description)

  • quiet => true

    (No description)

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/App-RGBColorUtils.

SOURCE

Source repository is at https://github.com/perlancar/perl-App-RGBColorUtils.

SEE ALSO

Color::RGB::Util

AUTHOR

perlancar <perlancar@cpan.org>

CONTRIBUTING

To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

 % prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE

This software is copyright (c) 2023, 2021, 2019 by perlancar <perlancar@cpan.org>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-RGBColorUtils

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.