Added new HTML+TypeScript demo program, corresponding to the command line demos of all other languages.
Project Nayuki
5 years ago
parent
d5d431a2d4
commit
a2704103bb
@ -0,0 +1,220 @@
|
|||||||
|
/*
|
||||||
|
* QR Code generator output demo (TypeScript)
|
||||||
|
*
|
||||||
|
* Copyright (c) Project Nayuki. (MIT License)
|
||||||
|
* https://www.nayuki.io/page/qr-code-generator-library
|
||||||
|
*
|
||||||
|
* 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.
|
||||||
|
*/
|
||||||
|
|
||||||
|
"use strict";
|
||||||
|
|
||||||
|
|
||||||
|
namespace app {
|
||||||
|
|
||||||
|
let outputElem = document.getElementById("output") as HTMLElement;
|
||||||
|
|
||||||
|
|
||||||
|
// The main application program.
|
||||||
|
function main(): void {
|
||||||
|
while (outputElem.firstChild !== null)
|
||||||
|
outputElem.removeChild(outputElem.firstChild);
|
||||||
|
doBasicDemo();
|
||||||
|
doVarietyDemo();
|
||||||
|
doSegmentDemo();
|
||||||
|
doMaskDemo();
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Creates a single QR Code, then appends it to the document.
|
||||||
|
function doBasicDemo(): void {
|
||||||
|
appendHeading("Basic");
|
||||||
|
const text: string = "Hello, world!"; // User-supplied Unicode text
|
||||||
|
const errCorLvl: qrcodegen.QrCode.Ecc = qrcodegen.QrCode.Ecc.LOW; // Error correction level
|
||||||
|
const qr: qrcodegen.QrCode = qrcodegen.QrCode.encodeText(text, errCorLvl); // Make the QR Code symbol
|
||||||
|
qr.drawCanvas(10, 4, appendCanvas("hello-world-QR")); // Draw it on screen
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Creates a variety of QR Codes that exercise different features of the library, and appends each one to the document.
|
||||||
|
function doVarietyDemo(): void {
|
||||||
|
appendHeading("Variety");
|
||||||
|
let qr: qrcodegen.QrCode;
|
||||||
|
const QrCode = qrcodegen.QrCode; // Abbreviation
|
||||||
|
|
||||||
|
// Numeric mode encoding (3.33 bits per digit)
|
||||||
|
qr = QrCode.encodeText("314159265358979323846264338327950288419716939937510", QrCode.Ecc.MEDIUM);
|
||||||
|
qr.drawCanvas(13, 1, appendCanvas("pi-digits-QR"));
|
||||||
|
|
||||||
|
// Alphanumeric mode encoding (5.5 bits per character)
|
||||||
|
qr = QrCode.encodeText("DOLLAR-AMOUNT:$39.87 PERCENTAGE:100.00% OPERATIONS:+-*/", QrCode.Ecc.HIGH);
|
||||||
|
qr.drawCanvas(10, 2, appendCanvas("alphanumeric-QR"));
|
||||||
|
|
||||||
|
// Unicode text as UTF-8
|
||||||
|
qr = QrCode.encodeText("\u3053\u3093\u306B\u3061wa\u3001\u4E16\u754C\uFF01 \u03B1\u03B2\u03B3\u03B4", QrCode.Ecc.QUARTILE);
|
||||||
|
qr.drawCanvas(10, 3, appendCanvas("unicode-QR"));
|
||||||
|
|
||||||
|
// Moderately large QR Code using longer text (from Lewis Carroll's Alice in Wonderland)
|
||||||
|
qr = QrCode.encodeText(
|
||||||
|
"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.", QrCode.Ecc.HIGH);
|
||||||
|
qr.drawCanvas(6, 10, appendCanvas("alice-wonderland-QR"));
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Creates QR Codes with manually specified segments for better compactness.
|
||||||
|
function doSegmentDemo(): void {
|
||||||
|
appendHeading("Segment");
|
||||||
|
let qr: qrcodegen.QrCode;
|
||||||
|
let segs: Array<qrcodegen.QrSegment>;
|
||||||
|
const QrCode = qrcodegen.QrCode; // Abbreviation
|
||||||
|
const QrSegment = qrcodegen.QrSegment; // Abbreviation
|
||||||
|
|
||||||
|
// Illustration "silver"
|
||||||
|
const silver0: string = "THE SQUARE ROOT OF 2 IS 1.";
|
||||||
|
const silver1: string = "41421356237309504880168872420969807856967187537694807317667973799";
|
||||||
|
qr = QrCode.encodeText(silver0 + silver1, QrCode.Ecc.LOW);
|
||||||
|
qr.drawCanvas(10, 3, appendCanvas("sqrt2-monolithic-QR"));
|
||||||
|
|
||||||
|
segs = [
|
||||||
|
QrSegment.makeAlphanumeric(silver0),
|
||||||
|
QrSegment.makeNumeric(silver1)];
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.LOW);
|
||||||
|
qr.drawCanvas(10, 3, appendCanvas("sqrt2-segmented-QR"));
|
||||||
|
|
||||||
|
// Illustration "golden"
|
||||||
|
const golden0: string = "Golden ratio \u03C6 = 1.";
|
||||||
|
const golden1: string = "6180339887498948482045868343656381177203091798057628621354486227052604628189024497072072041893911374";
|
||||||
|
const golden2: string = "......";
|
||||||
|
qr = QrCode.encodeText(golden0 + golden1 + golden2, QrCode.Ecc.LOW);
|
||||||
|
qr.drawCanvas(8, 5, appendCanvas("phi-monolithic-QR"));
|
||||||
|
|
||||||
|
segs = [
|
||||||
|
QrSegment.makeBytes(toUtf8ByteArray(golden0)),
|
||||||
|
QrSegment.makeNumeric(golden1),
|
||||||
|
QrSegment.makeAlphanumeric(golden2)];
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.LOW);
|
||||||
|
qr.drawCanvas(8, 5, appendCanvas("phi-segmented-QR"));
|
||||||
|
|
||||||
|
// Illustration "Madoka": kanji, kana, Cyrillic, full-width Latin, Greek characters
|
||||||
|
const madoka: string = "\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";
|
||||||
|
qr = QrCode.encodeText(madoka, QrCode.Ecc.LOW);
|
||||||
|
qr.drawCanvas(9, 4, appendCanvas("madoka-utf8-QR"));
|
||||||
|
|
||||||
|
const kanjiCharBits: Array<number> = [ // Kanji mode encoding (13 bits per character)
|
||||||
|
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1,
|
||||||
|
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,
|
||||||
|
0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
|
||||||
|
0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1,
|
||||||
|
0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1,
|
||||||
|
0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0,
|
||||||
|
0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1,
|
||||||
|
0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1,
|
||||||
|
0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1,
|
||||||
|
0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1,
|
||||||
|
0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1,
|
||||||
|
0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0,
|
||||||
|
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0,
|
||||||
|
0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1,
|
||||||
|
0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0,
|
||||||
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
|
||||||
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||||
|
0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1,
|
||||||
|
0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0,
|
||||||
|
0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1,
|
||||||
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||||
|
0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0,
|
||||||
|
0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1,
|
||||||
|
0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1,
|
||||||
|
0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1,
|
||||||
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||||
|
0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0,
|
||||||
|
0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||||||
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
|
||||||
|
];
|
||||||
|
segs = [new QrSegment(QrSegment.Mode.KANJI, kanjiCharBits.length / 13, kanjiCharBits)];
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.LOW);
|
||||||
|
qr.drawCanvas(9, 4, appendCanvas("madoka-kanji-QR"));
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Creates QR Codes with the same size and contents but different mask patterns.
|
||||||
|
function doMaskDemo(): void {
|
||||||
|
appendHeading("Mask");
|
||||||
|
let qr: qrcodegen.QrCode;
|
||||||
|
let segs: Array<qrcodegen.QrSegment>;
|
||||||
|
const QrCode = qrcodegen.QrCode; // Abbreviation
|
||||||
|
|
||||||
|
// Project Nayuki URL
|
||||||
|
segs = qrcodegen.QrSegment.makeSegments("https://www.nayuki.io/");
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.HIGH, QrCode.MIN_VERSION, QrCode.MAX_VERSION, -1, true); // Automatic mask
|
||||||
|
qr.drawCanvas(8, 6, appendCanvas("project-nayuki-automask-QR"));
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.HIGH, QrCode.MIN_VERSION, QrCode.MAX_VERSION, 3, true); // Force mask 3
|
||||||
|
qr.drawCanvas(8, 6, appendCanvas("project-nayuki-mask3-QR"));
|
||||||
|
|
||||||
|
// Chinese text as UTF-8
|
||||||
|
segs = qrcodegen.QrSegment.makeSegments("\u7DAD\u57FA\u767E\u79D1\uFF08Wikipedia\uFF0C\u8046\u807Di/\u02CCw\u026Ak\u1D7B\u02C8pi\u02D0di.\u0259/\uFF09\u662F\u4E00"
|
||||||
|
+ "\u500B\u81EA\u7531\u5167\u5BB9\u3001\u516C\u958B\u7DE8\u8F2F\u4E14\u591A\u8A9E\u8A00\u7684\u7DB2\u8DEF\u767E\u79D1\u5168\u66F8\u5354\u4F5C\u8A08\u756B");
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.MEDIUM, QrCode.MIN_VERSION, QrCode.MAX_VERSION, 0, true); // Force mask 0
|
||||||
|
qr.drawCanvas(10, 3, appendCanvas("unicode-mask0-QR"));
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.MEDIUM, QrCode.MIN_VERSION, QrCode.MAX_VERSION, 1, true); // Force mask 1
|
||||||
|
qr.drawCanvas(10, 3, appendCanvas("unicode-mask1-QR"));
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.MEDIUM, QrCode.MIN_VERSION, QrCode.MAX_VERSION, 5, true); // Force mask 5
|
||||||
|
qr.drawCanvas(10, 3, appendCanvas("unicode-mask5-QR"));
|
||||||
|
qr = QrCode.encodeSegments(segs, QrCode.Ecc.MEDIUM, QrCode.MIN_VERSION, QrCode.MAX_VERSION, 7, true); // Force mask 7
|
||||||
|
qr.drawCanvas(10, 3, appendCanvas("unicode-mask7-QR"));
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
function appendHeading(text: string): void {
|
||||||
|
let h2 = outputElem.appendChild(document.createElement("h2"));
|
||||||
|
h2.textContent = text;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
function appendCanvas(caption: string): HTMLCanvasElement {
|
||||||
|
let p = outputElem.appendChild(document.createElement("p"));
|
||||||
|
p.textContent = caption + ":";
|
||||||
|
let result = document.createElement("canvas");
|
||||||
|
outputElem.appendChild(result);
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
function toUtf8ByteArray(str: string): Array<number> {
|
||||||
|
str = encodeURI(str);
|
||||||
|
let result: Array<number> = [];
|
||||||
|
for (let i = 0; i < str.length; i++) {
|
||||||
|
if (str.charAt(i) != "%")
|
||||||
|
result.push(str.charCodeAt(i));
|
||||||
|
else {
|
||||||
|
result.push(parseInt(str.substr(i + 1, 2), 16));
|
||||||
|
i += 2;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
main();
|
||||||
|
|
||||||
|
}
|
||||||
Loading…
Reference in new issue