07 The class BarcodeFrame
This class is derived from ReportFrame, and you can use it to add a barcode to the report. The barcode may be QRCODE, PDF417 or DATAMATRIX. For QRCODE you can give an additional value which defines the level of error correction (L=low, M=medium, and H=high). You have to add the letter after a comma as you can see in the following example.
$bcfr = new ReportLib\BarcodeFrame("text in the qr code", “QRCODE,H”, 50.0, 50.0);
$body->addFrame($bcfr);
The parameters in the constructor are the additional attributes for the BarcodeFrame. First there is the text of the barcode. Then follows the type of barcode. At last, you can pass a maximal width and height in millimeters for the barcode image.
If you do not pass a maximal width and height, the barcode image will use the whole width and height of the parent frame. You can pass a maximal width or a maximal height or both. If you omit one of them, the barcode frame uses the corresponding size of the parent. The barcode type defines the form of the barcode image. QRCODE and DATAMATRIX codes uses squares and PDF417 uses a rectangle shape. The code image uses as much space as possible in the calculated rectangle. Therefore, the frame can have white space around the code image depending on the alignments and the given sizes.