public function __construct(Document $doc, $canvas = null)
{
if (self::DEBUG) {
echo __FUNCTION__ . "\n";
}
$dimensions = $doc->getDimensions();
$w = $dimensions["width"];
$h = $dimensions["height"];
if (!$canvas) {
$canvas = new \PDFlib();
/* all strings are expected as utf8 */
$canvas->set_option("stringformat=utf8");
$canvas->set_option("errorpolicy=return");
/* open new PDF file; insert a file name to create the PDF on disk */
if ($canvas->begin_document("", "") == 0) {
die("Error: " . $canvas->get_errmsg());
}
$canvas->set_info("Creator", "PDFlib starter sample");
$canvas->set_info("Title", "starter_graphics");
$canvas->begin_page_ext($w, $h, "");
}
// Flip PDF coordinate system so that the origin is in
// the top left rather than the bottom left
$canvas->setmatrix(1, 0, 0, -1, 0, $h);
$this->width = $w;
$this->height = $h;
$this->canvas = $canvas;
}
/**
* Get a configured instance of PDFLib
* @return \PDFlib
* @throws Exception
*/
protected function getPdf()
{
$pdf = new \PDFlib();
if ($this->_licenseKey) {
try {
$pdf->set_option("license={$this->_licenseKey}");
} catch (PDFlibException $e) {
throw new Exception("Unable to validate PDFLib license key, check that your PDFLib version is compatible with your key: " . $e->getMessage());
}
}
//This means we must check return values of load_font() etc.
$pdf->set_option("errorpolicy=exception");
// open new PDF file in memory
$pdf->begin_document("", "");
$pdf->set_info("Creator", "Jazzee");
$pdf->set_info("Author", "Jazzee Open Application Platform");
return $pdf;
}