#!/usr/bin/perl
use warnings; use strict;

use PDF::API2;

sub importPageGraphics {
  my ($pdf,$sourcepdf,$sourceindex,$targetindex) = @_;
  $sourceindex ||= 1;
  $targetindex ||= 0; # create new page

  my $sourcepage = $sourcepdf->openpage($sourceindex);
  my $targetpage = $pdf->page($targetindex);

  $targetpage->mediabox($sourcepage->get_trimbox);

  my $gfx = $targetpage->gfx;

  my $xoform =  $pdf->importPageIntoForm($sourcepdf,
                                         $sourceindex);

  $gfx->formimage($xoform, 0, 0, 1.0);
}

my $pdf = PDF::API2->new();
my $src_pdf = PDF::API2->open('/tmp/overlay.pdf');

importPageGraphics($pdf,$src_pdf);

$pdf->saveas('/tmp/test.pdf');