| public static isImagickLoaded ( ) : boolean | ||
| return | boolean | True if Imagick is loaded, false otherwise |
public function __construct()
{
if (!EscposImage::isImagickLoaded()) {
throw new Exception("ImagePrintBuffer requires the imagick extension");
}
$this->font = null;
$this->fontSize = 24;
}
function __construct()
{
if (!EscposImage::isImagickLoaded()) {
throw new Exception("ImagePrintBuffer requires the imagick extension");
}
}
protected function requireGraphicsLibrary()
{
if (!EscposImage::isGdLoaded() && !EscposImage::isImagickLoaded()) {
$this->markTestSkipped("This test requires a graphics library.");
}
}
/**
* Load a PDF for use on the printer
*
* @param string $pdfFile
* The file to load
* @param string $pageWidth
* The width, in pixels, of the printer's output. The first page of the
* PDF will be scaled to approximately fit in this area.
* @throws Exception Where Imagick is not loaded, or where a missing file
* or invalid page number is requested.
* @return multitype:EscposImage Array of images, retrieved from the PDF file.
*/
public static function loadPdf($pdfFile, $pageWidth = 550)
{
if (!EscposImage::isImagickLoaded()) {
throw new Exception(__FUNCTION__ . " requires imagick extension.");
}
/*
* Load first page at very low density (resolution), to figure out what
* density to use to achieve $pageWidth
*/
try {
$image = new \Imagick();
$testRes = 2;
// Test resolution
$image->setresolution($testRes, $testRes);
/* Load document just to measure geometry */
$image->readimage($pdfFile);
$geo = $image->getimagegeometry();
$image->destroy();
$width = $geo['width'];
$newRes = $pageWidth / $width * $testRes;
/* Load entire document in */
$image->setresolution($newRes, $newRes);
$image->readImage($pdfFile);
$pages = $image->getNumberImages();
/* Convert images to Escpos objects */
$ret = array();
for ($i = 0; $i < $pages; $i++) {
$image->setIteratorIndex($i);
$ep = new ImagickEscposImage();
$ep->readImageFromImagick($image);
$ret[] = $ep;
}
return $ret;
} catch (\ImagickException $e) {
/* Wrap in normal exception, so that classes which call this do not
* themselves require imagick as a dependency. */
throw new Exception($e);
}
}
