<?php
/*
 * PDF/UA-1 starter:
 * Create PDF/UA-1 document with various content types including structure
 * elements, artifacts, and interactive elements.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 10
 * Required data: font file, image
 */

/* This is where the data files are. Adjust as necessary. */
$searchpath = dirname(__FILE__,3)."/input";
$imagefile = "lionel.jpg";

$p = null;

try {
    $p = new pdflib();
    /*
     * errorpolicy=exception means that the program will stop
     * if one of the API functions runs into a problem.
     */
    $p->set_option("errorpolicy=exception searchPath={" . $searchpath . "}");

    /* all strings are expected as utf8 */

    $p->begin_document("",
        "pdfua=PDF/UA-1 lang=en " .
        "tag={tagname=Document Title={PDFlib PDF/UA-1 demo}}") ;

    $p->set_info("Creator", "starter_pdfua1");
    $p->set_info("Title", "PDFlib PDF/UA-1 demo");

    /* Automatically create spaces between chunks of text */
    $p->set_option("autospace=true");

    $p->begin_page_ext(0, 0,
            "width=a4.width height=a4.height taborder=structure");

    $p->create_bookmark("PDF/UA-1 demo", "");

    $font = $p->load_font("NotoSerif-Regular", "unicode", "");

    $p->setfont($font, 24.0);

    /* =================== Simple text  ======================== */

    /* Use abbreviated tagging with the "tag" option */
    $p->fit_textline("Introduction to Paper Planes",
        50, 700, "tag={tagname=H1 Title={Introduction}} fontsize=24");

    $p->fit_textline(
        "Paper planes can be made from any kind of paper.", 
        50, 675, "tag={tagname=P} fontsize=12");

    $p->fit_textline("Most paper planes don't have an engine.", 
        50, 650, "tag={tagname=P} fontsize=12");

    /* =================== Interactive Link ======================== */
    /* Open both P and Link elements in a single call */
    $id = $p->begin_item("P", "tag={tagname=Link Title={Kraxi on the Web}}");

    /* Create visible content which represents the link */
    $p->fit_textline("Learn more on the Kraxi website.", 
        50, 625,
        "matchbox={name={kraxi.com}} fontsize=12 " .
        "strokecolor=blue fillcolor=blue underline");

    /* Create URI action */
    $action = $p->create_action("URI", "url={http://www.kraxi.com}");

    /* Create Link annotation on named matchbox "kraxi.com".
     * This automatically creates an OBJR (object reference) element.
     */
    $optlist = "linewidth=0 usematchbox={kraxi.com} " .
        "contents={Link to Kraxi Inc. Web site} " .
        "action={activate=" . $action. " } ";
    $p->create_annotation(0, 0, 0, 0, "Link", $optlist);

    $p->end_item($id);

    /* =================== Image  ======================== */
    /* A grouping element is required as container for Figure and Caption */
    $id = $p->begin_item("Sect", "");
    $image = $p->load_image("auto", $imagefile, "");

    /* The "Placement" attribute is recommended for Figure elements
     * as children of grouping elements.
     */
    $p->fit_image($image, 50, 400,
        "tag={tagname=Figure Placement=Block Alt={Image of Kraxi waiting for customers.}} " .
        "scale=0.5");
    $p->close_image($image);
    /* Caption text below the image; Caption element follows Figure.
     * Since Caption doesn't allow direct content in PDF 1.7 we create
     * an additional P element.
     */
    $p->fit_textline("Kraxi waiting for customers.", 
        50, 375,
        "tag={tagname=Caption tag={tagname=P}} fontsize=12 ");

    $p->end_item($id);

    /* =================== Artifact  ======================== */
    $p->fit_textline("Page 1", 250, 100,
        "tag={tagname=Artifact} fontsize=12");

    $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=starter_pdfua1.pdf");
    print $buf;

}
catch (PDFlibException $e) {
    echo("PDFlib exception occurred in starter_pdfua1 sample:\n" .
        "[" . $e->get_errnum() . "] " . $e->get_apiname() . ": " .
        $e->get_errmsg() . "\n");
    exit(1);
}
catch (Throwable $e) {
    echo($e);
    exit(1);
}

$p = 0;
?>