qrcode-generator-ts
Version:
Typescript QR Code generator based on https://github.com/kazuhikoarase/qrcode-generator
251 lines • 9.68 kB
JavaScript
;
var Mode_1 = require('./Mode');
var ErrorCorrectLevel_1 = require('./ErrorCorrectLevel');
var Polynomial_1 = require('./Polynomial');
var QRMath_1 = require('./QRMath');
var MaskPattern_1 = require('./MaskPattern');
;
var QRUtil = (function () {
function QRUtil() {
throw 'error';
}
QRUtil.getPatternPosition = function (typeNumber) {
return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
};
QRUtil.getMaxLength = function (typeNumber, mode, errorCorrectLevel) {
var t = typeNumber - 1;
var e = 0;
var m = 0;
switch (errorCorrectLevel) {
case ErrorCorrectLevel_1.ErrorCorrectLevel.L:
e = 0;
break;
case ErrorCorrectLevel_1.ErrorCorrectLevel.M:
e = 1;
break;
case ErrorCorrectLevel_1.ErrorCorrectLevel.Q:
e = 2;
break;
case ErrorCorrectLevel_1.ErrorCorrectLevel.H:
e = 3;
break;
default:
throw 'e:' + errorCorrectLevel;
}
switch (mode) {
case Mode_1.Mode.MODE_NUMBER:
m = 0;
break;
case Mode_1.Mode.MODE_ALPHA_NUM:
m = 1;
break;
case Mode_1.Mode.MODE_8BIT_BYTE:
m = 2;
break;
case Mode_1.Mode.MODE_KANJI:
m = 3;
break;
default:
throw 'm:' + mode;
}
return QRUtil.MAX_LENGTH[t][e][m];
};
QRUtil.getErrorCorrectPolynomial = function (errorCorrectLength) {
var a = new Polynomial_1.Polynomial([1]);
for (var i = 0; i < errorCorrectLength; i += 1) {
a = a.multiply(new Polynomial_1.Polynomial([1, QRMath_1.QRMath.gexp(i)]));
}
return a;
};
QRUtil.getMaskFunc = function (maskPattern) {
switch (maskPattern) {
case MaskPattern_1.MaskPattern.PATTERN000:
return function (i, j) { return (i + j) % 2 == 0; };
case MaskPattern_1.MaskPattern.PATTERN001:
return function (i, j) { return i % 2 == 0; };
case MaskPattern_1.MaskPattern.PATTERN010:
return function (i, j) { return j % 3 == 0; };
case MaskPattern_1.MaskPattern.PATTERN011:
return function (i, j) { return (i + j) % 3 == 0; };
case MaskPattern_1.MaskPattern.PATTERN100:
return function (i, j) { return (~~(i / 2) + ~~(j / 3)) % 2 == 0; };
case MaskPattern_1.MaskPattern.PATTERN101:
return function (i, j) { return (i * j) % 2 + (i * j) % 3 == 0; };
case MaskPattern_1.MaskPattern.PATTERN110:
return function (i, j) { return ((i * j) % 2 + (i * j) % 3) % 2 == 0; };
case MaskPattern_1.MaskPattern.PATTERN111:
return function (i, j) { return ((i * j) % 3 + (i + j) % 2) % 2 == 0; };
default:
throw 'mask:' + maskPattern;
}
};
QRUtil.getLostPoint = function (qrCode) {
var moduleCount = qrCode.getModuleCount();
var lostPoint = 0;
for (var row = 0; row < moduleCount; row += 1) {
for (var col = 0; col < moduleCount; col += 1) {
var sameCount = 0;
var dark = qrCode.isDark(row, col);
for (var r = -1; r <= 1; r += 1) {
if (row + r < 0 || moduleCount <= row + r) {
continue;
}
for (var c = -1; c <= 1; c += 1) {
if (col + c < 0 || moduleCount <= col + c) {
continue;
}
if (r == 0 && c == 0) {
continue;
}
if (dark == qrCode.isDark(row + r, col + c)) {
sameCount += 1;
}
}
}
if (sameCount > 5) {
lostPoint += (3 + sameCount - 5);
}
}
}
for (var row = 0; row < moduleCount - 1; row += 1) {
for (var col = 0; col < moduleCount - 1; col += 1) {
var count = 0;
if (qrCode.isDark(row, col))
count += 1;
if (qrCode.isDark(row + 1, col))
count += 1;
if (qrCode.isDark(row, col + 1))
count += 1;
if (qrCode.isDark(row + 1, col + 1))
count += 1;
if (count == 0 || count == 4) {
lostPoint += 3;
}
}
}
for (var row = 0; row < moduleCount; row += 1) {
for (var col = 0; col < moduleCount - 6; col += 1) {
if (qrCode.isDark(row, col)
&& !qrCode.isDark(row, col + 1)
&& qrCode.isDark(row, col + 2)
&& qrCode.isDark(row, col + 3)
&& qrCode.isDark(row, col + 4)
&& !qrCode.isDark(row, col + 5)
&& qrCode.isDark(row, col + 6)) {
lostPoint += 40;
}
}
}
for (var col = 0; col < moduleCount; col += 1) {
for (var row = 0; row < moduleCount - 6; row += 1) {
if (qrCode.isDark(row, col)
&& !qrCode.isDark(row + 1, col)
&& qrCode.isDark(row + 2, col)
&& qrCode.isDark(row + 3, col)
&& qrCode.isDark(row + 4, col)
&& !qrCode.isDark(row + 5, col)
&& qrCode.isDark(row + 6, col)) {
lostPoint += 40;
}
}
}
var darkCount = 0;
for (var col = 0; col < moduleCount; col += 1) {
for (var row = 0; row < moduleCount; row += 1) {
if (qrCode.isDark(row, col)) {
darkCount += 1;
}
}
}
var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
lostPoint += ratio * 10;
return lostPoint;
};
QRUtil.getBCHTypeInfo = function (data) {
var d = data << 10;
while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) {
d ^= (QRUtil.G15 << (QRUtil.getBCHDigit(d) -
QRUtil.getBCHDigit(QRUtil.G15)));
}
return ((data << 10) | d) ^ QRUtil.G15_MASK;
};
QRUtil.getBCHTypeNumber = function (data) {
var d = data << 12;
while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) {
d ^= (QRUtil.G18 << (QRUtil.getBCHDigit(d) -
QRUtil.getBCHDigit(QRUtil.G18)));
}
return (data << 12) | d;
};
QRUtil.getBCHDigit = function (data) {
var digit = 0;
while (data != 0) {
digit += 1;
data >>>= 1;
}
return digit;
};
QRUtil.PATTERN_POSITION_TABLE = [
[],
[6, 18],
[6, 22],
[6, 26],
[6, 30],
[6, 34],
[6, 22, 38],
[6, 24, 42],
[6, 26, 46],
[6, 28, 50],
[6, 30, 54],
[6, 32, 58],
[6, 34, 62],
[6, 26, 46, 66],
[6, 26, 48, 70],
[6, 26, 50, 74],
[6, 30, 54, 78],
[6, 30, 56, 82],
[6, 30, 58, 86],
[6, 34, 62, 90],
[6, 28, 50, 72, 94],
[6, 26, 50, 74, 98],
[6, 30, 54, 78, 102],
[6, 28, 54, 80, 106],
[6, 32, 58, 84, 110],
[6, 30, 58, 86, 114],
[6, 34, 62, 90, 118],
[6, 26, 50, 74, 98, 122],
[6, 30, 54, 78, 102, 126],
[6, 26, 52, 78, 104, 130],
[6, 30, 56, 82, 108, 134],
[6, 34, 60, 86, 112, 138],
[6, 30, 58, 86, 114, 142],
[6, 34, 62, 90, 118, 146],
[6, 30, 54, 78, 102, 126, 150],
[6, 24, 50, 76, 102, 128, 154],
[6, 28, 54, 80, 106, 132, 158],
[6, 32, 58, 84, 110, 136, 162],
[6, 26, 54, 82, 110, 138, 166],
[6, 30, 58, 86, 114, 142, 170]
];
QRUtil.MAX_LENGTH = [
[[41, 25, 17, 10], [34, 20, 14, 8], [27, 16, 11, 7], [17, 10, 7, 4]],
[[77, 47, 32, 20], [63, 38, 26, 16], [48, 29, 20, 12], [34, 20, 14, 8]],
[[127, 77, 53, 32], [101, 61, 42, 26], [77, 47, 32, 20], [58, 35, 24, 15]],
[[187, 114, 78, 48], [149, 90, 62, 38], [111, 67, 46, 28], [82, 50, 34, 21]],
[[255, 154, 106, 65], [202, 122, 84, 52], [144, 87, 60, 37], [106, 64, 44, 27]],
[[322, 195, 134, 82], [255, 154, 106, 65], [178, 108, 74, 45], [139, 84, 58, 36]],
[[370, 224, 154, 95], [293, 178, 122, 75], [207, 125, 86, 53], [154, 93, 64, 39]],
[[461, 279, 192, 118], [365, 221, 152, 93], [259, 157, 108, 66], [202, 122, 84, 52]],
[[552, 335, 230, 141], [432, 262, 180, 111], [312, 189, 130, 80], [235, 143, 98, 60]],
[[652, 395, 271, 167], [513, 311, 213, 131], [364, 221, 151, 93], [288, 174, 119, 74]]
];
QRUtil.G15 = (1 << 10) | (1 << 8) | (1 << 5)
| (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0);
QRUtil.G18 = (1 << 12) | (1 << 11) | (1 << 10)
| (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0);
QRUtil.G15_MASK = (1 << 14) | (1 << 12) | (1 << 10)
| (1 << 4) | (1 << 1);
return QRUtil;
}());
exports.QRUtil = QRUtil;
//# sourceMappingURL=QRUtil.js.map