Jim Turner > JSON-signature-to-image-1.0 > signature-to-image

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NAME ^

signature-to-image

AUTHOR ^

This Perl Module: Jim Turner <http://home.mesh.net/turnerjw/jim>

Original PHP code: Thomas J Bradley <hey@thomasjbradley.ca> <http://thomasjbradley.ca/lab/signature-to-image>

COPYRIGHT ^

Copyright (c) 2011 Jim Turner <http://home.mesh.net/turnerjw/jim>. All rights reserved.

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

This is a derived work from signature-to-image.php (see below):

Signature to Image: A supplemental script for Signature Pad that generates an image of the signature's JSON output server-side using PHP.

project ca.thomasjbradley.applications.signaturetoimage

author Thomas J Bradley <hey@thomasjbradley.ca>

link http://thomasjbradley.ca/lab/signature-to-image

link http://github.com/thomasjbradley/signature-to-image

copyright Copyright MMXI, Thomas J Bradley

license New BSD License

version 1.0.1

Perl version created 2011/12/02 by Jim Turner

SYNOPSIS ^

signature-to-image.pl [--multiplier=#(5)] [--penwidth=#(2)] [--xmax=#(198)] [--ymax=#(55)] [--pen_color='r,g,b'(20,83,148)] [--background_color='r,g,b'(255,255,255)] json-file|-

-or-

cat jason-file | signature-to-image.pl [--multiplier=#(5)] [--penwidth=#(2)] [--xmax=#(198)] [--ymax=#(55)] [--pen_color='r,g,b'(20,83,148)] [--background_color='r,g,b'(255,255,255)] - >imagefile.png

-or-

#!/usr/bin/perl -w

require "signature-to-image.pl"

my ($img, $err) = &sig2png($json_image [, multiplier => #(5)] [, penwidth => #(2)] [, xmax => #(198)] [, ymax => #(55)] [, pen_color => 'r,g,b'(20,83,148)] [, background_color => 'r,g,b'(255,255,255)])

if ($err =~ /success/) {

        print $img;

} else {

        warn "..Could not create png image from json signature string ($err)!\n";

}

PREREQUISITES ^

        GDlib for perl;
        JSON::Parse;

PURPOSE ^

Create a Perl version of Thomas Bradley's signature-to-image.php for a client.

METHODS ^

sig2png ( STR [, options ] )

Converts a json string to a PNG image and returns an array containing the image as a binary string followed by "success" or an empty image string followed by an error message.

Options:

        multiplier => #  - Multiple image size by # pixels (default 5)
        penwidth => #  - Width in pixels of each vector to be drawn (will be multiplied by C<multiplier>) (default 2).
        xmax => #  - maximum width in pixels of the generated image (will be multiplied by C<multiplier>) (default 198).
        ymax => #  - maximum height in pixels of the generated image (will be multiplied by C<multiplier>) (default 55).
        pen_color => "r#,g#,b#"  - RGB values (0-255) for color to draw the signature in (default "20,83,148").
        background_color => "r#,g#,b#"  - RGB values (0-255) for background color (default "255,255,255").

KEYWORDS ^

JSON, JSON::Parse, signature-to-image

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