blob: 11a64bf7f838eae24c9aa8d2b0c1233dbab05ccf (
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from PIL import Image
import base64
from io import BytesIO
# Support both the qrcode library (current) and the qrencode one (legacy)
def generate_base64_qr(s, version, requested_size):
if not version:
version = 5
try:
import qrcode
qrimage = qrcode.make(s, version=version, border=0)
except ImportError:
try:
import qrencode
(ver, size, qrimage) = qrencode.encode(s, version=version, level=qrencode.QR_ECLEVEL_M)
except ImportError:
return ""
if qrimage.size[0] != requested_size:
if qrimage.size[0] < requested_size:
size = (requested_size // qrimage.size[0]) * qrimage.size[0]
else:
size = qrimage.size[0] // (qrimage.size[0] // requested_size + 1)
qrimage = qrimage.resize((size, size), Image.NEAREST)
b = BytesIO()
qrimage.save(b, "png")
return base64.b64encode(b.getvalue()).decode('ascii')
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