You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
4.9 KiB
127 lines
4.9 KiB
#
|
|
# QR Code generator demo (Python 2, 3)
|
|
#
|
|
# Copyright (c) Project Nayuki
|
|
# https://www.nayuki.io/page/qr-code-generator-library
|
|
#
|
|
# (MIT License)
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy of
|
|
# this software and associated documentation files (the "Software"), to deal in
|
|
# the Software without restriction, including without limitation the rights to
|
|
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
|
# the Software, and to permit persons to whom the Software is furnished to do so,
|
|
# subject to the following conditions:
|
|
# - The above copyright notice and this permission notice shall be included in
|
|
# all copies or substantial portions of the Software.
|
|
# - The Software is provided "as is", without warranty of any kind, express or
|
|
# implied, including but not limited to the warranties of merchantability,
|
|
# fitness for a particular purpose and noninfringement. In no event shall the
|
|
# authors or copyright holders be liable for any claim, damages or other
|
|
# liability, whether in an action of contract, tort or otherwise, arising from,
|
|
# out of or in connection with the Software or the use or other dealings in the
|
|
# Software.
|
|
#
|
|
|
|
from __future__ import print_function
|
|
import qrcodegen
|
|
|
|
|
|
# ---- Main program ----
|
|
|
|
def main():
|
|
"""The main application program."""
|
|
do_basic_demo()
|
|
do_variety_demo()
|
|
do_segment_demo()
|
|
|
|
|
|
def do_basic_demo():
|
|
"""Creates a single QR Code, then prints it to the console."""
|
|
text = u"Hello, world!" # User-supplied Unicode text
|
|
errcorlvl = qrcodegen.QrCode.Ecc.LOW # Error correction level
|
|
qr = qrcodegen.QrCode.encode_text(text, errcorlvl)
|
|
print_qr(qr)
|
|
|
|
|
|
def do_variety_demo():
|
|
"""Creates a variety of QR Codes that exercise different features of the library, and prints each one to the console."""
|
|
|
|
# Project Nayuki URL
|
|
qr = qrcodegen.QrCode.encode_text("https://www.nayuki.io/", qrcodegen.QrCode.Ecc.HIGH)
|
|
qr = qrcodegen.QrCode(qrcode=qr, mask=3) # Change mask, forcing to mask #3
|
|
print_qr(qr)
|
|
|
|
# Numeric mode encoding (3.33 bits per digit)
|
|
qr = qrcodegen.QrCode.encode_text("314159265358979323846264338327950288419716939937510", qrcodegen.QrCode.Ecc.MEDIUM)
|
|
print_qr(qr)
|
|
|
|
# Alphanumeric mode encoding (5.5 bits per character)
|
|
qr = qrcodegen.QrCode.encode_text("DOLLAR-AMOUNT:$39.87 PERCENTAGE:100.00% OPERATIONS:+-*/", qrcodegen.QrCode.Ecc.HIGH)
|
|
print_qr(qr)
|
|
|
|
# Unicode text as UTF-8, and different masks
|
|
qr = qrcodegen.QrCode.encode_text(u"\u3053\u3093\u306B\u3061\u0077\u0061\u3001\u4E16\u754C\uFF01\u0020\u03B1\u03B2\u03B3\u03B4", qrcodegen.QrCode.Ecc.QUARTILE)
|
|
print_qr(qrcodegen.QrCode(qrcode=qr, mask=0))
|
|
print_qr(qrcodegen.QrCode(qrcode=qr, mask=1))
|
|
print_qr(qrcodegen.QrCode(qrcode=qr, mask=5))
|
|
print_qr(qrcodegen.QrCode(qrcode=qr, mask=7))
|
|
|
|
# Moderately large QR Code using longer text (from Lewis Carroll's Alice in Wonderland)
|
|
qr = qrcodegen.QrCode.encode_text(
|
|
"Alice was beginning to get very tired of sitting by her sister on the bank, "
|
|
"and of having nothing to do: once or twice she had peeped into the book her sister was reading, "
|
|
"but it had no pictures or conversations in it, 'and what is the use of a book,' thought Alice "
|
|
"'without pictures or conversations?' So she was considering in her own mind (as well as she could, "
|
|
"for the hot day made her feel very sleepy and stupid), whether the pleasure of making a "
|
|
"daisy-chain would be worth the trouble of getting up and picking the daisies, when suddenly "
|
|
"a White Rabbit with pink eyes ran close by her.", qrcodegen.QrCode.Ecc.HIGH)
|
|
print_qr(qr)
|
|
|
|
|
|
def do_segment_demo():
|
|
"""Creates QR Codes with manually specified segments for better compactness."""
|
|
|
|
# Illustration "silver"
|
|
silver0 = "THE SQUARE ROOT OF 2 IS 1."
|
|
silver1 = "41421356237309504880168872420969807856967187537694807317667973799"
|
|
qr = qrcodegen.QrCode.encode_text(silver0 + silver1, qrcodegen.QrCode.Ecc.LOW)
|
|
print_qr(qr)
|
|
|
|
segs = [
|
|
qrcodegen.QrSegment.make_alphanumeric(silver0),
|
|
qrcodegen.QrSegment.make_numeric(silver1)]
|
|
qr = qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.LOW)
|
|
print_qr(qr)
|
|
|
|
# Illustration "golden"
|
|
golden0 = u"Golden ratio \u03C6 = 1."
|
|
golden1 = u"6180339887498948482045868343656381177203091798057628621354486227052604628189024497072072041893911374"
|
|
golden2 = u"......"
|
|
qr = qrcodegen.QrCode.encode_text(golden0 + golden1 + golden2, qrcodegen.QrCode.Ecc.LOW)
|
|
print_qr(qr)
|
|
|
|
segs = [
|
|
qrcodegen.QrSegment.make_bytes(golden0.encode("UTF-8")),
|
|
qrcodegen.QrSegment.make_numeric(golden1),
|
|
qrcodegen.QrSegment.make_alphanumeric(golden2)]
|
|
qr = qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.LOW)
|
|
print_qr(qr)
|
|
|
|
|
|
|
|
# ---- Utilities ----
|
|
|
|
def print_qr(qrcode):
|
|
"""Prints the given QrCode object to the console."""
|
|
border = 4
|
|
for y in range(-border, qrcode.get_size() + border):
|
|
for x in range(-border, qrcode.get_size() + border):
|
|
print(u"\u2588 "[qrcode.get_module(x,y)] * 2, end="")
|
|
print()
|
|
print()
|
|
|
|
|
|
# Run the main program
|
|
if __name__ == "__main__":
|
|
main()
|