form_fields/form_tab_order
Define the position of each form field in the tab order, i.e. when the user presses the "Tab" key.
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<?php
/*
* Form tab order:
* Define the position of each form field in the tab order, i.e. when the user
* presses the "Tab" key.
*
* By default the tab order of fields will be implicitly defined according to
* their creation order. Using the "taborder" option another tab order can
* be defined. Create a matrix of text fields row by row but define the tab
* order column by column.
*
* 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 = "Form Tab Order";
$width=130; $height=30; $llx = 10; $lly = 600;
try {
$p = new pdflib();
/* This means we must check return values of load_font() etc. */
$p->set_option("errorpolicy=return");
$p->set_option("searchpath={" . $searchpath . "}");
if ($p->begin_document($outfile, "") == 0)
throw new Exception("Error: " . $p->get_errmsg());
$p->set_info("Creator", "PDFlib Cookbook");
$p->set_info("Title", $title);
$font = $p->load_font("NotoSerif-Regular", "winansi",
"simplefont nosubsetting");
if ($font == 0)
throw new Exception("Error: " . $p->get_errmsg());
/* Start page */
$p->begin_page_ext(0, 0, " width=a4.width height=a4.height");
$p->setfont($font, 14);
$p->fit_textline("Press \"Tab\" to move from one field to the next in " .
"the tab order defined.", $llx, $lly, "");
/* Create a matrix of text fields row by row but define the tab order
* column by column (taborder=...). Each text fields show its position
* in the tab order (currentvalue={...}).
*/
$optlist = "backgroundcolor={rgb 0.95 1 0.95} bordercolor={gray 0} " .
"alignment=center font=" . $font . " fontsize=18";
$lly-= 50;
for ($i = 1; $i <= 3; $i++) {
for ($j = 1, $tab=$i; $j <= 3; $j++, $tab+=3) {
$p->create_field($llx, $lly, $llx + $width, $lly + $height,
"field" . $tab, "textfield", $optlist . " taborder=" . $tab .
" currentvalue={tab position " . $tab . "}");
$llx+=$width + 20;
}
$llx = 10;
$lly -= $height + 30;
}
$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=form_tab_order.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;
?>