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186 lines
7.9 KiB
186 lines
7.9 KiB
#
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# QR Code generator demo (Python 2, 3)
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#
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# Run this command-line program with no arguments. The program computes a bunch of demonstration
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# QR Codes and prints them to the console. Also, the SVG code for one QR Code is printed as a sample.
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#
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# Copyright (c) Project Nayuki. (MIT License)
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# https://www.nayuki.io/page/qr-code-generator-library
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy of
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# this software and associated documentation files (the "Software"), to deal in
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# the Software without restriction, including without limitation the rights to
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# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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# the Software, and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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# - The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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# - The Software is provided "as is", without warranty of any kind, express or
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# implied, including but not limited to the warranties of merchantability,
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# fitness for a particular purpose and noninfringement. In no event shall the
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# authors or copyright holders be liable for any claim, damages or other
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# liability, whether in an action of contract, tort or otherwise, arising from,
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# out of or in connection with the Software or the use or other dealings in the
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# Software.
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#
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from __future__ import print_function
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import qrcodegen
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# ---- Main program ----
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def main():
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"""The main application program."""
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do_basic_demo()
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do_variety_demo()
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do_segment_demo()
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do_mask_demo()
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def do_basic_demo():
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"""Creates a single QR Code, then prints it to the console."""
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text = u"Hello, world!" # User-supplied Unicode text
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errcorlvl = qrcodegen.QrCode.Ecc.LOW # Error correction level
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# Make and print the QR Code symbol
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qr = qrcodegen.QrCode.encode_text(text, errcorlvl)
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print_qr(qr)
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print(qr.to_svg_str(4))
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def do_variety_demo():
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"""Creates a variety of QR Codes that exercise different features of the library, and prints each one to the console."""
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# Numeric mode encoding (3.33 bits per digit)
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qr = qrcodegen.QrCode.encode_text("314159265358979323846264338327950288419716939937510", qrcodegen.QrCode.Ecc.MEDIUM)
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print_qr(qr)
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# Alphanumeric mode encoding (5.5 bits per character)
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qr = qrcodegen.QrCode.encode_text("DOLLAR-AMOUNT:$39.87 PERCENTAGE:100.00% OPERATIONS:+-*/", qrcodegen.QrCode.Ecc.HIGH)
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print_qr(qr)
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# Unicode text as UTF-8
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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)
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print_qr(qr)
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# Moderately large QR Code using longer text (from Lewis Carroll's Alice in Wonderland)
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qr = qrcodegen.QrCode.encode_text(
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"Alice was beginning to get very tired of sitting by her sister on the bank, "
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"and of having nothing to do: once or twice she had peeped into the book her sister was reading, "
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"but it had no pictures or conversations in it, 'and what is the use of a book,' thought Alice "
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"'without pictures or conversations?' So she was considering in her own mind (as well as she could, "
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"for the hot day made her feel very sleepy and stupid), whether the pleasure of making a "
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"daisy-chain would be worth the trouble of getting up and picking the daisies, when suddenly "
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"a White Rabbit with pink eyes ran close by her.", qrcodegen.QrCode.Ecc.HIGH)
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print_qr(qr)
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def do_segment_demo():
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"""Creates QR Codes with manually specified segments for better compactness."""
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# Illustration "silver"
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silver0 = "THE SQUARE ROOT OF 2 IS 1."
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silver1 = "41421356237309504880168872420969807856967187537694807317667973799"
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qr = qrcodegen.QrCode.encode_text(silver0 + silver1, qrcodegen.QrCode.Ecc.LOW)
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print_qr(qr)
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segs = [
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qrcodegen.QrSegment.make_alphanumeric(silver0),
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qrcodegen.QrSegment.make_numeric(silver1)]
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qr = qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.LOW)
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print_qr(qr)
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# Illustration "golden"
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golden0 = u"Golden ratio \u03C6 = 1."
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golden1 = u"6180339887498948482045868343656381177203091798057628621354486227052604628189024497072072041893911374"
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golden2 = u"......"
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qr = qrcodegen.QrCode.encode_text(golden0 + golden1 + golden2, qrcodegen.QrCode.Ecc.LOW)
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print_qr(qr)
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segs = [
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qrcodegen.QrSegment.make_bytes(golden0.encode("UTF-8")),
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qrcodegen.QrSegment.make_numeric(golden1),
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qrcodegen.QrSegment.make_alphanumeric(golden2)]
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qr = qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.LOW)
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print_qr(qr)
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# Illustration "Madoka": kanji, kana, Greek, Cyrillic, full-width Latin characters
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madoka = u"\u300C\u9B54\u6CD5\u5C11\u5973\u307E\u3069\u304B\u2606\u30DE\u30AE\u30AB\u300D\u3063\u3066\u3001\u3000\u0418\u0410\u0418\u3000\uFF44\uFF45\uFF53\uFF55\u3000\u03BA\u03B1\uFF1F"
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qr = qrcodegen.QrCode.encode_text(madoka, qrcodegen.QrCode.Ecc.LOW)
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print_qr(qr)
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kanjiCharBits = [ # Kanji mode encoding (13 bits per character)
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0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1,
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1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,
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0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
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0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1,
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0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1,
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0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0,
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0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1,
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0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1,
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0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1,
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0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1,
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0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1,
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0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0,
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0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0,
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0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1,
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0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1,
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0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0,
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0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1,
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0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1,
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0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0,
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0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
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]
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segs = [qrcodegen.QrSegment(qrcodegen.QrSegment.Mode.KANJI, len(kanjiCharBits) // 13, kanjiCharBits)]
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qr = qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.LOW)
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print_qr(qr)
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def do_mask_demo():
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"""Creates QR Codes with the same size and contents but different mask patterns."""
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# Project Nayuki URL
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segs = qrcodegen.QrSegment.make_segments("https://www.nayuki.io/")
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print_qr(qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.HIGH, mask=-1)) # Automatic mask
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print_qr(qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.HIGH, mask=3)) # Force mask 3
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# Chinese text as UTF-8
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segs = qrcodegen.QrSegment.make_segments(
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u"\u7DAD\u57FA\u767E\u79D1\uFF08\u0057\u0069\u006B\u0069\u0070\u0065\u0064\u0069\u0061\uFF0C"
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"\u8046\u807D\u0069\u002F\u02CC\u0077\u026A\u006B\u1D7B\u02C8\u0070\u0069\u02D0\u0064\u0069"
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"\u002E\u0259\u002F\uFF09\u662F\u4E00\u500B\u81EA\u7531\u5167\u5BB9\u3001\u516C\u958B\u7DE8"
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"\u8F2F\u4E14\u591A\u8A9E\u8A00\u7684\u7DB2\u8DEF\u767E\u79D1\u5168\u66F8\u5354\u4F5C\u8A08"
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"\u756B")
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print_qr(qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.MEDIUM, mask=0)) # Force mask 0
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print_qr(qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.MEDIUM, mask=1)) # Force mask 1
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print_qr(qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.MEDIUM, mask=5)) # Force mask 5
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print_qr(qrcodegen.QrCode.encode_segments(segs, qrcodegen.QrCode.Ecc.MEDIUM, mask=7)) # Force mask 7
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# ---- Utilities ----
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def print_qr(qrcode):
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"""Prints the given QrCode object to the console."""
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border = 4
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for y in range(-border, qrcode.get_size() + border):
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for x in range(-border, qrcode.get_size() + border):
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print(u"\u2588 "[1 if qrcode.get_module(x,y) else 0] * 2, end="")
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print()
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print()
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# Run the main program
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if __name__ == "__main__":
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main()
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