PDFlib Cookbook

cookbook

textflow/starter_textflow

Create multi-column text output which may span multiple pages.

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<?php
/*
 *
 * Textflow starter:
 * Create multi-column text output which may span multiple pages
 *
 * required software: PDFlib/PDFlib+PDI/PPS 9
 * required data: font file
 */

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

$outfilename = "";
$tf = 0;
$llx1= 50; $lly1=50; $urx1=250; $ury1=800;
$llx2=300; $lly2=50; $urx2=500; $ury2=800;

/* Repeat the dummy text to produce more contents */
$count = 50;

$optlist1 = "fontname=NotoSerif-Regular fontsize=10.5 encoding=unicode " .
    "leading=125% fillcolor={gray 0} alignment=justify";
$optlist2 = "fontname=NotoSerif-Regular fontsize=16 encoding=unicode " .
    "fillcolor={rgb 1 0 0} charref";

/* Dummy text for filling the columns. Soft hyphens are marked with
 * the character reference "&shy;" (character references are
 * enabled by the charref option).
 */
$text= 
"Lorem ipsum dolor sit amet, consectetur adi&shy;pi&shy;sicing elit, sed do eius&shy;mod tempor incidi&shy;dunt ut labore et dolore magna ali&shy;qua. Ut enim ad minim ve&shy;niam, quis nostrud exer&shy;citation ull&shy;amco la&shy;bo&shy;ris nisi ut ali&shy;quip ex ea commodo con&shy;sequat. Duis aute irure dolor in repre&shy;henderit in voluptate velit esse cillum dolore eu fugiat nulla pari&shy;atur. Excep&shy;teur sint occae&shy;cat cupi&shy;datat non proident, sunt in culpa qui officia dese&shy;runt mollit anim id est laborum. ";

try {
    $p = new PDFlib();

    $p->set_option("searchpath={" . $searchpath . "}");

    # This means we must check return values of load_font() etc.
    $p->set_option("errorpolicy=return");
    $p->set_option("stringformat=utf8");

    if ($p->begin_document($outfilename, "") == 0) {
        echo("Error: " . $p->get_errmsg());
        exit(1);
    }

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

    /* Create some amount of dummy text and feed it to a Textflow
     * object with alternating options. 
     */
    for ($i=1; $i<=$count; $i++) {
        $num = $i . " ";

        $tf = $p->add_textflow($tf, $num, $optlist2);
        if ($tf == 0) {
            echo("Error: " . $p->get_errmsg());
            exit(1);
        }

        $tf = $p->add_textflow($tf, $text, $optlist1);
        if ($tf == 0) {
            echo("Error: " . $p->get_errmsg());
            exit(1);
        }
    }

    /* Loop until all of the text is placed; create new pages
     * as long as more text needs to be placed. Two columns will
     * be created on all pages.
     */
    do {
        /* Add "showborder" to visualize the fitbox borders */
        $optlist = "verticalalign=justify linespreadlimit=120% ";

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

        /* Fill the first column */
        $result = $p->fit_textflow($tf, $llx1, $lly1, $urx1, $ury1, $optlist);

        /* Fill the second column if we have more text*/
        if ($result != "_stop") {
            $result = $p->fit_textflow($tf, 
                        $llx2, $lly2, $urx2, $ury2, $optlist);
        }

        $p->end_page_ext("");

        /* "_boxfull" means we must continue because there is more text;
         * "_nextpage" is interpreted as "start new column"
         */
    } while ($result == "_boxfull" || $result == "_nextpage");

    /* Check for errors */
    if (!$result == "_stop") {
        /* "_boxempty" happens if the box is very small and doesn't
         * hold any text at all.
         */
        if ($result == "_boxempty") {
            echo("Error: Textflow box too small");
            exit(1);
        } else {
            /* Any other return value is a user exit caused by
             * the "return" option; this requires dedicated code to
             * deal with.
             */
            echo("User return '" . $result . "' found in Textflow");
            exit(1);
        }
    }

    $p->delete_textflow($tf);

    $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_textflow.pdf");
    print $buf;

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

$p = 0;
?>