I am writing a PDF file with PDF::API2 and use PDF::API2::Gfx to have an image in PDF file. I like to center the image instead of specifiying the X co-ordinate. I like to allow a certain Y co-ordinate.

#!/usr/bin/perl
use strict;
use warnings;
use PDF::API2;
my $imageFile = 'test.jpg';
my $doc = new PDF::API2( -file => "$0.pdf" );
my $page = $doc->page();
my $gfx = $page->gfx();
my $pic = $doc->image_jpeg( $imageFile );
$gfx->image( $pic, 100, 100, 1 );
$doc->save();
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Thanks..