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package Imager::QRCode;
use warnings;
use strict;
use base qw(Exporter);
use vars qw(@ISA $VERSION @EXPORT_OK);
@EXPORT_OK = qw(plot_qrcode);
use Carp qw(croak);
use Imager 0.55;
BEGIN {
$VERSION = '0.035';
eval {
require XSLoader;
XSLoader::load('Imager::QRCode', $VERSION);
1;
} or do {
require DynaLoader;
push @ISA, 'DynaLoader';
bootstrap Imager::QRCode $VERSION;
};
}
sub new {
my $class = shift;
my $params = scalar ref $_[0] eq 'HASH' ? $_[0] : { @_ };
return bless { params => $params }, $class;
}
sub plot {
my ( $self, $text ) = @_;
defined $text or croak 'Not enough arguments for plot()';
return _imager( _plot($text, $self->{params}) );
}
sub plot_qrcode {
my ( $text, $params ) = @_;
defined $text or croak 'Not enough arguments for plot()';
$params ||= {} if !$params || ref $params ne 'HASH';
return _imager( _plot( $text, $params ) );
}
sub _imager {
my $raw = shift;
ref $raw eq 'Imager::ImgRaw' or croak "_imager() argument must be Imager::ImgRaw";
my $img = Imager->new;
$img->{IMG} = $raw;
return $img;
}
1; # Magic true value required at end of module
__END__
=head1 NAME
Imager::QRCode - Generate QR Code with Imager using libqrencode
=head1 SYNOPSIS
use Imager::QRCode;
my $qrcode = Imager::QRCode->new(
size => 2,
margin => 2,
version => 1,
level => 'M',
casesensitive => 1,
lightcolor => Imager::Color->new(255, 255, 255),
darkcolor => Imager::Color->new(0, 0, 0),
);
my $img = $qrcode->plot("blah blah");
$img->write(file => "qrcode.gif")
or die "Failed to write: " . $img->errstr;
# or exporting function
use Imager::QRCode qw(plot_qrcode);
my $img = plot_qrcode("blah blah", \%params);
$img->write(file => "qrcode.gif")
or die "Failed to write: " . $img->errstr;
=head1 DESCRIPTION
This module allows you to generate QR Code with Imager. This module use libqrencode '2.0.0' and above.
=head1 METHODS
=over 4
=item new
$qrcode = Imager::QRCode->new(%params);
The C<new()> constructor method instantiates a new Imager::QRCode object. C<new()> accepts the following parameters.
=over 4
=item *
C<size> - Horizontal and vertical size of module(dot). Default is 4.
=item *
C<margin> - Margin size of QR Code. Default is 3.
=item *
C<level> - Error correction level. Valid values are 'M', 'L', 'Q' or 'H'. Default is 'L'.
=item *
C<version> - Version of the symbol. If specify '0', this module chooses the minimum version for the input data. Default is '0'.
=item *
C<mode> - Encoding mode. Valid values are 'numerical', 'alpha-numerical', '8-bit' or 'kanji'. Default is '8-bit'.
If not give C<casesensitive> then should be given C<mode>. If 'kanji' is given, characters will be encoded as Shift-JIS characters. If '8-bit' is given, all of non-alpha-numerical characters will be encoded as is. If you want to embed UTF-8 string, choose '8-bit'.
=item *
C<casesensitive> - If your application is case-sensitive using 8-bit characters, set to '1'. Default is '0'.
=back
=item plot($text)
$img = $qrcode->plot("blah blah");
Create a new QR Code image. This method returns Imager object plotted QR Code with the given text.
=back
=head1 EXPORTABLE FUNCTION
=over 4
=item plot_qrcode($text, \%params)
C<$text> is input text. C<%params> is same parameter as C<new()>.
=back
=head1 SEE ALSO
C<Imager>, C<http://www.qrcode.com/>, C<http://megaui.net/fukuchi/works/qrencode/index.en.html>
=head1 AUTHOR
Yoshiki KURIHARA C<< <kurihara __at__ cpan.org> >>
=head1 THANKS
Tokuhiro Matsuno
=head1 LICENCE AND COPYRIGHT
Copyright (c) 2011, Yoshiki KURIHARA C<< <kurihara __at__ cpan.org> >>.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See L<perlartistic>.
|
