Romain Porte b648cfd67f First attempt at centering images and QRs (#250)
This was tested on ZJ-5890 with success. By default centering is
deactivated for backward compatibility. Trying to center a QR code in
native mode will raise an exception as we do not know ATM if the native
rendering is centered by default or not.

* Added basic tests for center feature

* Check image size before centering
2017-08-31 09:25:35 +02:00
..
2017-08-10 21:54:52 +02:00