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First attempt at centering images and QRs (#250)

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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
This commit is contained in:
Romain Porte
2017-08-31 09:25:35 +02:00
committed by Patrick Kanzler
parent 50c627fbb0
commit b648cfd67f
6 changed files with 74 additions and 10 deletions
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2
examples/qr_code.py
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@@ -16,4 +16,4 @@ if __name__ == '__main__':
# Adapt to your needs
p = Usb(0x0416, 0x5011, profile="POS-5890")
p.qr(content)
p.qr(content, center=True)