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our $DATE = '2024-12-21'; # DATE
our $DIST = 'App-ImageMagickUtils'; # DIST
our $VERSION = '0.024'; # VERSION

my $cmdline = Perinci::CmdLine::Any->new(
    url => "/Math/Image/CalcResized/calc_image_resized_size",
    program_name => "calc-image-resized-size",
    read_config => 0,
    read_env => 0,
);

$cmdline->run;

# ABSTRACT: Given size of an image (in WxH, e.g. "2592x1944") and ImageMagick-like resize instruction (e.g. "1024p>"), calculate new resized image
# PODNAME: calc-image-resized-size

__END__

=pod

=encoding UTF-8

=head1 NAME

calc-image-resized-size - Given size of an image (in WxH, e.g. "2592x1944") and ImageMagick-like resize instruction (e.g. "1024p>"), calculate new resized image

=head1 VERSION

This document describes version 0.024 of calc-image-resized-size (from Perl distribution App-ImageMagickUtils), released on 2024-12-21.

=head1 SYNOPSIS

B<calc-image-resized-size> B<L<--help|/"--help, -h, -?">> (or B<L<-h|/"--help, -h, -?">>, B<L<-?|/"--help, -h, -?">>)

B<calc-image-resized-size> B<L<--version|/"--version, -v">> (or B<L<-v|/"--version, -v">>)

B<calc-image-resized-size> [B<L<--format|/"--format=s">>=I<name>|B<L<--json|/"--json">>] [B<L<--(no)naked-res|/"--naked-res">>] [B<L<--page-result|/"--page-result">>[=I<program>]|B<L<--view-result|/"--view-result">>[=I<program>]] -- E<lt>I<L<size|/"-...



See examples in the L</EXAMPLES> section.

=head1 OPTIONS

C<*> marks required options.

=head2 Main options

=over

=item B<--resize>=I<s>*

Resize instruction, follows ImageMagick format.

Resize instruction can be given in several formats:

 Syntax                     Meaning
 -------------------------- ----------------------------------------------------------------
 ""                         No resizing.
 
 SCALE"%"                   Height and width both scaled by specified percentage.
 SCALEX"%x"SCALEY"%"        Height and width individually scaled by specified percentages. (Only one % symbol needed.)
 
 WIDTH                      Width given, height automagically selected to preserve aspect ratio.
 WIDTH">"                   Shrink width if larger, height automagically selected to preserve aspect ratio.
 WIDTH"^"                   Enlarge width if smaller, height automagically selected to preserve aspect ratio.
 
 "x"HEIGHT                  Height given, width automagically selected to preserve aspect ratio.
 "x"HEIGHT">"               Shrink height if larger, width automagically selected to preserve aspect ratio.
 "x"HEIGHT"^"               Enlarge height if smaller, width automagically selected to preserve aspect ratio.
 
 WIDTH"x"HEIGHT             Maximum values of height and width given, aspect ratio preserved.
 WIDTH"x"HEIGHT"^"          Minimum values of height and width given, aspect ratio preserved.
 WIDTH"x"HEIGHT"!"          Width and height emphatically given, original aspect ratio ignored.
 WIDTH"x"HEIGHT">"          Shrinks an image with dimension(s) larger than the corresponding width and/or height argument(s).
 WIDTH"x"HEIGHT"<"          Shrinks an image with dimension(s) larger than the corresponding width and/or height argument(s).
 
 NUMBER"^>"                 Shrink shortest side if larger than number, aspect ratio preserved.
 NUMBER"^<"                 Enlarge shortest side if larger than number, aspect ratio preserved.
 "^"NUMBER">"               Shrink longer side if larger than number, aspect ratio preserved.
 "^"NUMBER"<"               Enlarge longer side if larger than number, aspect ratio preserved.

Currently unsupported:

 AREA"@"                    Resize image to have specified area in pixels. Aspect ratio is preserved.
 X":"Y                      Here x and y denotes an aspect ratio (e.g. 3:2 = 1.5).

Ref: L<http://www.imagemagick.org/script/command-line-processing.php#geometry>


Can also be specified as the 2nd command-line argument.

=item B<--size>=I<s>*

Image/video size, in <width>x<height> format, e.g. 2592x1944.

Can also be specified as the 1st command-line argument.

=back

=head2 Output options

=over

=item B<--format>=I<s>

Choose output format, e.g. json, text.

Default value:

 undef

Output can be displayed in multiple formats, and a suitable default format is
chosen depending on the application and/or whether output destination is
interactive terminal (i.e. whether output is piped). This option specifically
chooses an output format.


=item B<--json>

Set output format to json.

script/calc-image-resized-size  view on Meta::CPAN

Display help message and exit.

=item B<--version>, B<-v>

Display program's version and exit.

=back

=head1 COMPLETION

This script has shell tab completion capability with support for several
shells.

=head2 bash

To activate bash completion for this script, put:

 complete -C calc-image-resized-size calc-image-resized-size

in your bash startup (e.g. F<~/.bashrc>). Your next shell session will then
recognize tab completion for the command. Or, you can also directly execute the
line above in your shell to activate immediately.

It is recommended, however, that you install modules using L<cpanm-shcompgen>
which can activate shell completion for scripts immediately.

=head2 tcsh

To activate tcsh completion for this script, put:

 complete calc-image-resized-size 'p/*/`calc-image-resized-size`/'

in your tcsh startup (e.g. F<~/.tcshrc>). Your next shell session will then
recognize tab completion for the command. Or, you can also directly execute the
line above in your shell to activate immediately.

It is also recommended to install L<shcompgen> (see above).

=head2 other shells

For fish and zsh, install L<shcompgen> as described above.

=head1 EXAMPLES

=head2 no resizing

 % calc-image-resized-size 2592x1944 ''
 2592x1944

=head2 scale (down) to 20%

 % calc-image-resized-size 2592x1944 20%
 518x388

=head2 scale (down) width to 20% but height to 40%

 % calc-image-resized-size 2592x1944 20%x40%
 518x777

=head2 scale (down) width to 20% but height to 40% (first percent sign is optional)

 % calc-image-resized-size 2592x1944 20x40%
 518x777

=head2 set width to 1024px

 % calc-image-resized-size 2592x1944 1024
 1024x768

=head2 shrink width to 1024px

 % calc-image-resized-size 2592x1944 '1024>'
 1024x768

=head2 shrink width to 10240px (no effect since width is already less than 10240px)

 % calc-image-resized-size 2592x1944 '10240>'
 2592x1944

=head2 enlarge width to 1024px (no effect since width is already greater than 1024px

 % calc-image-resized-size 2592x1944 1024^
 2592x1944

=head2 enlarge width to 10240px

 % calc-image-resized-size 2592x1944 10240^
 10240x7680

=head2 set height to 1024px

 % calc-image-resized-size 2592x1944 x1024
 1365x1024

=head2 shrink height to 768px

 % calc-image-resized-size 2592x1944 'x768>'
 1024x768

=head2 shrink height to 7680px (no effect since height is already less than 7680px)

 % calc-image-resized-size 2592x1944 'x7680>'
 2592x1944

=head2 enlarge height to 768px (no effect since height is already greater than 768px)

 % calc-image-resized-size 2592x1944 x768^
 2592x1944

=head2 enlarge height to 7680px

 % calc-image-resized-size 2592x1944 x7680^
 10240x7680

=head2 fit image inside 20000x10000 (no effect since it already fits)

 % calc-image-resized-size 2592x1944 20000x10000
 2592x1944

=head2 fit image inside 20000x1000 (height is reduced to 1000 to make the image fit)