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refactor access of private member _img of qrcode 

Since version 2.5 python-qrcode allows the direct access of the
PIL-functions. (We require version 4 and above).
Thus, we can simply call qr_img.convert() without accessing the private
member.
This refactoring is identical in functionality.
This commit is contained in:
Patrick Kanzler 2016-08-15 23:24:06 +02:00
parent e8d91a6735
commit 798893caee
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1 changed files with 3 additions and 2 deletions
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5
src/escpos/escpos.py
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@ -157,7 +157,7 @@ class Escpos(object):
if not native: if not native:
# Map ESC/POS error correction levels to python 'qrcode' library constant and render to an image # Map ESC/POS error correction levels to python 'qrcode' library constant and render to an image
if model != QR_MODEL_2: if model != QR_MODEL_2:
raise ValueError("Invalid QR model for python-qrcode rendering (must be QR_MODEL_2)") raise ValueError("Invalid QR model for qrlib rendering (must be QR_MODEL_2)")
python_qr_ec = { python_qr_ec = {
QR_ECLEVEL_H: qrcode.constants.ERROR_CORRECT_H, QR_ECLEVEL_H: qrcode.constants.ERROR_CORRECT_H,
QR_ECLEVEL_L: qrcode.constants.ERROR_CORRECT_L, QR_ECLEVEL_L: qrcode.constants.ERROR_CORRECT_L,
@ -168,7 +168,8 @@ class Escpos(object):
qr_code.add_data(content) qr_code.add_data(content)
qr_code.make(fit=True) qr_code.make(fit=True)
qr_img = qr_code.make_image() qr_img = qr_code.make_image()
im = qr_img.convert("RGB") # Convert the RGB image in printable image im = qr_img._img.convert("RGB")
# Convert the RGB image in printable image
self.image(im) self.image(im)
return return
# Native 2D code printing # Native 2D code printing