general/starter_pvf

<?php

/* $Id: starter_pvf.php,v 1.2 2009/08/04 11:19:07 rp Exp $

 * PDFlib Virtual File system (PVF):

 * Create a PVF file which holds an image or PDF, and import the data from the

 * PVF file

 *

 * This avoids disk access and is especially useful when the same image or PDF

 * is imported multiply. For examples, images which sit in a database don't

 * have to be written and re-read from disk, but can be passed to PDFlib

 * directly in memory. A similar technique can be used for loading other data

 * such as fonts, ICC profiles, etc.

 *

 * Required software: PDFlib Lite/PDFlib/PDFlib+PDI/PPS 7

 * Required data: image file

 */

/* This is where the data files are. Adjust as necessary. */

$searchpath = "../input";

$outfile = "";

$title = "PDFlib Virtual File System";

$imageData = "";

try {

    $p = new pdflib();

    $p->set_parameter("SearchPath", $searchpath);

    /* This means we must check return values of load_font() etc. */

    $p->set_parameter("errorpolicy", "return");

    if ($p->begin_document($outfile, "") == 0)

        throw new Exception("Error: " . $p->get_errmsg());

    $p->set_info("Creator", "PDFlib Cookbook");

    $p->set_info("Title", $title );

    /* We just read some image data from a file; to really benefit

     * from using PVF read the data from a Web site or a database instead

     */

    $imageData = file_get_contents("../input/PDFlib-logo.tif");

    $p->create_pvf("/pvf/image", $imageData, "");

    /* Load the image from the PVF */

    $image = $p->load_image("auto", "/pvf/image" , "");

    if ($image == 0)

        throw new Exception("Error: " . $p->get_errmsg());

    /* Fit the image on page 1 */

    $p->begin_page_ext(595, 842, "");

    $p->fit_image($image, 350, 750, "");

    $p->end_page_ext("");

    /* Fit the image on page 2 */

    $p->begin_page_ext(595, 842, "");

    $p->fit_image($image, 350, 50, "");

    $p->end_page_ext("");

    /* Delete the virtual file to free the allocated memory */

    $p->delete_pvf("/pvf/image");

    $p->end_document("");

    $buf = $p->get_buffer();

    $len = strlen($buf);

    header("Content-type: application/pdf");

    header("Content-Length: $len");

    header("Content-Disposition: inline; filename=starter_pvf.pdf");

    print $buf;

} catch (PDFlibException $e){

    die("PDFlib exception occurred:\n" .

        "[" . $e->get_errnum() . "] " . $e->get_apiname() .

        ": " . $e->get_errmsg() . "\n");

} catch (Exception $e) {

    die($e->getMessage());

}

$p=0;

?>