pdfa/text_to_pdfa

<?php

/* $Id: text_to_pdfa.php,v 1.3 2012/05/03 14:00:37 stm Exp $

 * Text to PDF/A:

 * Output text conforming to PDF/A-1b, taking care of color space and font

 * issues

 *

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

 * Required data: font file

 */

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

$searchpath = dirname(dirname(dirname(__FILE__)))."/input";

$outfile = "";

$title = "Text to PDF/A";

$x = 30; $y = 800;

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");

    $p->set_parameter("textformat", "utf8");

    /* Output all contents conforming to PDF/A-1b */

    if ($p->begin_document($outfile, "pdfa=PDF/A-1b:2005") == 0)

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

   

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

    $p->set_info("Title", $title);

    /* Use sRGB as output intent since it allows the color spaces CIELab,

     * ICC-based, Grayscale, and RGB

     */

    $p->load_iccprofile("sRGB", "usage=outputintent");

   

    $p->begin_page_ext(595, 842, "");

    /* Load the font "LuciduxSans-Oblique" with embedding, since font

     * embedding is required for PDF/A

     */

    $font = $p->load_font("LuciduxSans-Oblique", "unicode", "embedding");

    if ($font == 0)

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

   

    $p->setfont($font, 20);

    /* You might want to embed a PDF core font, e.g. "Helvetica". For a PDF

     * core font, the font metrics are already built into PDFlib, but

     * the font outline file has to be explicitly configured with the

     * "FontOutline" ressource category, e.g.

     *

     * $p->set_parameter("FontOutline", "Helvetica=HV______.pfb");

     *

     */

   

    /* We can use RGB text without any further color related options since

     * we already supplied an output intent profile.

     */

    $p->setcolor("fill", "rgb", 0.7, 0.3, 0.3, 0);

 

    $p->fit_textline("Text with an RGB color conforming to PDF/A-1b:2005",

        $x, $y-=100, "");

 

    /* Similarly, we can use Grayscale text without any further options

     * since we already supplied an output intent profile.

     */

    $p->setcolor("fill", "gray", 0.5, 0, 0, 0);

    $p->fit_textline("Text with a Grayscale color conforming to " .

        "PDF/A-1b:2005", $x, $y-=100, "");

   

    /* For CMYK text we could use an ICC profile explicitly assigned; the

     * code would be as follows:

     *

     * icc = $p->load_iccprofile("ISOcoated.icc", "usage=iccbased");

     * $p->set_value("setcolor:iccprofilecmyk", icc);

     * $p->setcolor("fill", "iccbasedcmyk", 0.6, 0.6, 0, 0);

     * $p->fit_textline("Text with a CMYK color conforming to PDF/A-1b:2005",

     *     x, y-=100, "");

     *

     */

    $p->end_page_ext("");

    $p->end_document("");

    $buf = $p->get_buffer();

    $len = strlen($buf);

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

    header("Content-Length: $len");

    header("Content-Disposition: inline; filename=text_to_pdfa.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;

?>