<?php
/*
 * 
 * Continue note after text:
 * Insert a dot sequence or an arrow image at the end of a Textflow.
 *
 * Place a Textflow while inserting a dot sequence at the end of each fitbox.
 * Use the "width" key of info_textline() to retrieve the width of the dot 
 * sequence. Fit the Textflow with the "createlastindent" option set to the 
 * width of the dot sequence to specify appropriate empty space at the end of 
 * the fitbox. Then, fill the space between the last word and the right fitbox
 * border with the dot sequence using fit_textline(). For placing the dot 
 * sequence use the font and font size of the Textflow by retrieving it with
 * info_textflow() and the "lastfont" and "lastfontsize" options.
 * Similarly, place a Textflow but insert an arrow image at the end of each
 * fitbox.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 10
 * Required data: none
 */

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

$imagefile = "arrow.jpg";

$tf = 0;

$imagewidth = 30;

$fontsize = 20;

$llx = 100; $urx = 400;
$lly_start = 630; $ury_start = 780;
$lly = $lly_start; $ury = $ury_start;
$yoffset = 190;

$dots = "...";

$tftext = 
    "Our paper planes are the ideal way of passing the time. We "
    . "offer revolutionary new developments of the traditional common "
    . "paper planes. If your lesson, conference, or lecture turn out "
    . "to be deadly boring, you can have a wonderful time with our "
    . "planes. All our models are folded from one paper sheet. They "
    . "are exclusively folded without using any adhesive. Several "
    . "mod&shy;els are equipped with a folded landing gear enabling a "
    . "safe land&shy;ing on the intended location pro&shy;vided that "
    . "you have aimed well. Other models are able to fly loops or "
    . "cover long distances. Let them start from a vista point in the "
    . "mountains and see where they touch the ground. "
    . "Have a look at our new paper plane models!";

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");

    if ($p->begin_document($outfile, "") == 0)
        throw new Exception("Error: " . $p->get_errmsg());

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

    $font = $p->load_font("NotoSerif-Bold", "unicode", "");
    if ($font == 0)
        throw new Exception("Error: " . $p->get_errmsg());

    /* Load the image */
    $image = $p->load_image("auto", $imagefile, "");
    if ($image == 0)
        throw new Exception("Error: " . $p->get_errmsg());

    /*
     * ----------------------------------------------------------------
     * Place a Textflow in one ore more fitboxes while inserting
     * three dots at the end of each fitbox
     * ----------------------------------------------------------------
     */

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

    $p->setfont($font, 16);
    $p->fit_textline("Page 1: Three dots will be appended at the end of "
            . "each fitbox", 20, 810, "");

    /* Add the Textflow */
    $optlist = "fontname=NotoSerif-Regular fontsize=" . $fontsize
            . " leading=120% charref alignment=justify ";

    $tf = $p->add_textflow($tf, $tftext, $optlist);
    if ($tf == 0)
        throw new Exception("Error: " . $p->get_errmsg());

    /*
     * Retrieve the length of the text to be inserted at the end of the
     * Textflow
     */
    $optlist = "font=" . $font . " fontsize=" . $fontsize;
    $textwidth = $p->info_textline($dots, "width", $optlist);

    /* Initialize the fitbox rectangle */
    $lly = $lly_start;
    $ury = $ury_start;

    /*
     * Loop until all of the text is placed; create new fitboxes as long
     * as more text needs to be placed.
     */
    do {
        /*
         * Prepare the option list with the "createlastindent" option 
         * set to the text width retrieved for the dots above
         */
        $p->setcolor("stroke", "rgb", 0.99, 0.44, 0.06, 0);

        $optlist = "verticalalign=justify linespreadlimit=120% "
                . "createlastindent={rightindent=" . $textwidth . "} "
                . "showborder";

        /* Place the Textflow */
        $result = $p->fit_textflow($tf, $llx, $lly, $urx, $ury, $optlist);

        /* Check for errors */
        if ($result == "_boxempty")
            throw new Exception("Error: Textflow box too small");

        if ($result != "_stop") {
            /* Get the text position at the end of the Textflow */
            $textendx = $p->info_textflow($tf, "textendx");
            $textendy = $p->info_textflow($tf, "textendy");

            /*
             * Get the font and font size used in the last text line of
             * the fitbox
             */
            $lastfont = $p->info_textflow($tf, "lastfont");
            $lastfontsize = $p->info_textflow($tf, "lastfontsize");

            /* Place the dots at the end of the Textflow */
            $optlist = "font=" . $lastfont . " fontsize=" . $lastfontsize;
            $p->fit_textline($dots, $textendx, $textendy, $optlist);

            $lly -= $yoffset;
            $ury -= $yoffset;
        }

        /* 
         * "_boxfull" means we must continue because there is more text 
         */
    }
    while ($result == "_boxfull");

    $p->delete_textflow($tf);

    $p->end_page_ext("");

    /*
     * -----------------------------------------------------------------
     * Place a Textflow in one ore more fitboxes while inserting an
     * image containing an arrow at the end of each fitbox
     * -----------------------------------------------------------------
     */

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

    $tf = 0;

    $p->setfont($font, 16);
    $p->fit_textline(
            "Page 2: An arrow image will be appended at the end "
                    . "of each fitbox", 20, 810, "");

    /*
     * Retrieve the length of the text to be inserted at the end of the
     * Textflow
     */
    $optlist = "font=" . $font . " fontsize=" . $fontsize;

    /* Define the Textflow options */
    $optlist = "fontname=NotoSerif-Regular fontsize=" . $fontsize
            . " leading=120% charref alignment=justify ";

    /* Add the Textflow */
    $tf = $p->add_textflow($tf, $tftext, $optlist);
    if ($tf == 0)
        throw new Exception("Error: " . $p->get_errmsg());

    /* Initialize the fitbox rectangle */
    $lly = $lly_start;
    $ury = $ury_start;

    /*
     * Loop until all of the text is placed; create new fitboxes as long
     * as more text needs to be placed.
     */
    do {
        /*
         * Prepare the option list with the "createlastindent" option 
         * set to the text width retrieved for the dots above
         */
        $p->setcolor("stroke", "rgb", 1, 0, 0, 0);

        $optlist = "verticalalign=justify linespreadlimit=120% "
                . "createlastindent={rightindent=" . $imagewidth . "}";

        /* Place the Textflow */
        $result = $p->fit_textflow($tf, $llx, $lly, $urx, $ury, $optlist);

        /* Check for errors */
        if ($result == "_boxempty")
            throw new Exception("Error: Textflow box too small");

        if ($result != "_stop") {
            /* Get the text position at the end of the Textflow */
            $textendx = (int) $p->info_textflow($tf, "textendx");
            $textendy = (int) $p->info_textflow($tf, "textendy");

            /* Place the image at the end of the Textflow */
            $optlist = "boxsize={" . $imagewidth . " " . ($fontsize * 0.8)
                    . "} " . "fitmethod=meet position={right top}";

            $p->fit_image($image, $textendx, $textendy, $optlist);

            $lly -= $yoffset;
            $ury -= $yoffset;
        }

        /* 
         * "_boxfull" means we must continue because there is more text
         */
    }
    while ($result == "_boxfull");

    $p->delete_textflow($tf);

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

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

$p = 0;

?>