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dengrui/jsFile/qrcode.js

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首次git
2021-08-26 01:49:06 +00:00
/**
* qrcode-wx-miniprogram
*/
let QRMode = {
MODE_NUMBER: 1 << 0,
MODE_ALPHA_NUM: 1 << 1,
MODE_8BIT_BYTE: 1 << 2,
MODE_KANJI: 1 << 3
},
QRErrorCorrectLevel = {
L: 1,
M: 0,
Q: 3,
H: 2
},
QRMaskPattern = {
PATTERN000: 0,
PATTERN001: 1,
PATTERN010: 2,
PATTERN011: 3,
PATTERN100: 4,
PATTERN101: 5,
PATTERN110: 6,
PATTERN111: 7
},
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]
],
G15: (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
G18: (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
G15_MASK: (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1),
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;
},
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;
},
getBCHDigit: function(data) {
var digit = 0;
while (data != 0) {
digit++;
data >>>= 1;
}
return digit;
},
getPatternPosition: function(typeNumber) {
return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
},
getMask: function(maskPattern, i, j) {
switch (maskPattern) {
case QRMaskPattern.PATTERN000:
return (i + j) % 2 == 0;
case QRMaskPattern.PATTERN001:
return i % 2 == 0;
case QRMaskPattern.PATTERN010:
return j % 3 == 0;
case QRMaskPattern.PATTERN011:
return (i + j) % 3 == 0;
case QRMaskPattern.PATTERN100:
return (Math.floor(i / 2) + Math.floor(j / 3)) % 2 == 0;
case QRMaskPattern.PATTERN101:
return (i * j) % 2 + (i * j) % 3 == 0;
case QRMaskPattern.PATTERN110:
return ((i * j) % 2 + (i * j) % 3) % 2 == 0;
case QRMaskPattern.PATTERN111:
return ((i * j) % 3 + (i + j) % 2) % 2 == 0;
default:
//throw new Error("bad maskPattern:" + maskPattern);
throwError("bad maskPattern:" + maskPattern);
}
},
getErrorCorrectPolynomial: function(errorCorrectLength) {
var a = new QRPolynomial([1], 0);
for (var i = 0; i < errorCorrectLength; i++) {
a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0));
}
return a;
},
getLengthInBits: function(mode, type) {
if (1 <= type && type < 10) {
switch (mode) {
case QRMode.MODE_NUMBER:
return 10;
case QRMode.MODE_ALPHA_NUM:
return 9;
case QRMode.MODE_8BIT_BYTE:
return 8;
case QRMode.MODE_KANJI:
return 8;
default:
//throw new Error("mode:" + mode);
throwError("mode:" + mode);
}
} else if (type < 27) {
switch (mode) {
case QRMode.MODE_NUMBER:
return 12;
case QRMode.MODE_ALPHA_NUM:
return 11;
case QRMode.MODE_8BIT_BYTE:
return 16;
case QRMode.MODE_KANJI:
return 10;
default:
//throw new Error("mode:" + mode);
throwError("mode:" + mode);
}
} else if (type < 41) {
switch (mode) {
case QRMode.MODE_NUMBER:
return 14;
case QRMode.MODE_ALPHA_NUM:
return 13;
case QRMode.MODE_8BIT_BYTE:
return 16;
case QRMode.MODE_KANJI:
return 12;
default:
//throw new Error("mode:" + mode);
throwError("mode:" + mode);
}
} else {
//throw new Error("type:" + type);
throwError("type:" + type);
}
},
getLostPoint: function(qrCode) {
var moduleCount = qrCode.getModuleCount();
var lostPoint = 0;
for (var row = 0; row < moduleCount; row++) {
for (var col = 0; col < moduleCount; col++) {
var sameCount = 0;
var dark = qrCode.isDark(row, col);
for (var r = -1; r <= 1; r++) {
if (row + r < 0 || moduleCount <= row + r) {
continue;
}
for (var c = -1; c <= 1; c++) {
if (col + c < 0 || moduleCount <= col + c) {
continue;
}
if (r == 0 && c == 0) {
continue;
}
if (dark == qrCode.isDark(row + r, col + c)) {
sameCount++;
}
}
}
if (sameCount > 5) {
lostPoint += (3 + sameCount - 5);
}
}
}
for (var row = 0; row < moduleCount - 1; row++) {
for (var col = 0; col < moduleCount - 1; col++) {
var count = 0;
if (qrCode.isDark(row, col)) count++;
if (qrCode.isDark(row + 1, col)) count++;
if (qrCode.isDark(row, col + 1)) count++;
if (qrCode.isDark(row + 1, col + 1)) count++;
if (count == 0 || count == 4) {
lostPoint += 3;
}
}
}
for (var row = 0; row < moduleCount; row++) {
for (var col = 0; col < moduleCount - 6; col++) {
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++) {
for (var row = 0; row < moduleCount - 6; row++) {
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++) {
for (var row = 0; row < moduleCount; row++) {
if (qrCode.isDark(row, col)) {
darkCount++;
}
}
}
var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
lostPoint += ratio * 10;
return lostPoint;
}
},
QRMath = {
glog: function(n) {
if (n < 1) {
//throw new Error("glog(" + n + ")");
throwError("glog(" + n + ")");
}
return QRMath.LOG_TABLE[n];
},
gexp: function(n) {
while (n < 0) {
n += 255;
}
while (n >= 256) {
n -= 255;
}
return QRMath.EXP_TABLE[n];
},
EXP_TABLE: new Array(256),
LOG_TABLE: new Array(256)
};
for (let i = 0; i < 8; i++) {
QRMath.EXP_TABLE[i] = 1 << i;
}
for (let i = 8; i < 256; i++) {
QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4] ^ QRMath.EXP_TABLE[i - 5] ^ QRMath.EXP_TABLE[i - 6] ^ QRMath
.EXP_TABLE[i - 8];
}
for (let i = 0; i < 255; i++) {
QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i;
}
/*
* class QR8bitByte
* */
class QR8bitByte {
constructor(data) {
this.mode = QRMode.MODE_8BIT_BYTE;
this.data = data;
this.parsedData = [];
// Added to support UTF-8 Characters
for (let i = 0, l = this.data.length; i < l; i++) {
let byteArray = [],
code = this.data.charCodeAt(i);
if (code > 0x10000) {
byteArray[0] = 0xF0 | ((code & 0x1C0000) >>> 18);
byteArray[1] = 0x80 | ((code & 0x3F000) >>> 12);
byteArray[2] = 0x80 | ((code & 0xFC0) >>> 6);
byteArray[3] = 0x80 | (code & 0x3F);
} else if (code > 0x800) {
byteArray[0] = 0xE0 | ((code & 0xF000) >>> 12);
byteArray[1] = 0x80 | ((code & 0xFC0) >>> 6);
byteArray[2] = 0x80 | (code & 0x3F);
} else if (code > 0x80) {
byteArray[0] = 0xC0 | ((code & 0x7C0) >>> 6);
byteArray[1] = 0x80 | (code & 0x3F);
} else {
byteArray[0] = code;
}
this.parsedData.push(byteArray);
}
this.parsedData = Array.prototype.concat.apply([], this.parsedData);
if (this.parsedData.length !== this.data.length) {
this.parsedData.unshift(191);
this.parsedData.unshift(187);
this.parsedData.unshift(239);
}
}
getLength(buffer) {
return this.parsedData.length;
}
write(buffer) {
for (let i = 0, l = this.parsedData.length; i < l; i++) {
buffer.put(this.parsedData[i], 8);
}
}
}
/*
* class QRCodeModel
* */
class QRCodeModel {
constructor(typeNumber, errorCorrectLevel) {
this.typeNumber = typeNumber;
this.errorCorrectLevel = errorCorrectLevel;
this.modules = null;
this.moduleCount = 0;
this.dataCache = null;
this.dataList = [];
}
addData(data) {
let newData = new QR8bitByte(data);
this.dataList.push(newData);
this.dataCache = null;
}
isDark(row, col) {
if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) {
//throw new Error(row + ',' + col);
throwError(row + ',' + col);
}
return this.modules[row][col];
}
getModuleCount() {
return this.moduleCount;
}
make() {
this.makeImpl(false, this.getBestMaskPattern());
}
makeImpl(test, maskPattern) {
this.moduleCount = this.typeNumber * 4 + 17;
this.modules = new Array(this.moduleCount);
for (let row = 0; row < this.moduleCount; row++) {
this.modules[row] = new Array(this.moduleCount);
for (let col = 0; col < this.moduleCount; col++) {
this.modules[row][col] = null;
}
}
this.setupPositionProbePattern(0, 0);
this.setupPositionProbePattern(this.moduleCount - 7, 0);
this.setupPositionProbePattern(0, this.moduleCount - 7);
this.setupPositionAdjustPattern();
this.setupTimingPattern();
this.setupTypeInfo(test, maskPattern);
if (this.typeNumber >= 7) {
this.setupTypeNumber(test);
}
if (this.dataCache == null) {
this.dataCache = QRCodeModel.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);
}
this.mapData(this.dataCache, maskPattern);
}
setupPositionProbePattern(row, col) {
for (let r = -1; r <= 7; r++) {
if (row + r <= -1 || this.moduleCount <= row + r) {
continue;
}
for (let c = -1; c <= 7; c++) {
if (col + c <= -1 || this.moduleCount <= col + c) {
continue;
}
this.modules[row + r][col + c] = (0 <= r && r <= 6 && (c == 0 || c == 6)) ||
(0 <= c && c <= 6 && (r == 0 || r == 6)) || (2 <= r && r <= 4 && 2 <= c && c <= 4)
}
}
}
getBestMaskPattern() {
let minLostPoint = 0,
pattern = 0;
for (let i = 0; i < 8; i++) {
this.makeImpl(true, i);
let lostPoint = QRUtil.getLostPoint(this);
if (i == 0 || minLostPoint > lostPoint) {
minLostPoint = lostPoint;
pattern = i;
}
}
return pattern;
}
setupTimingPattern() {
for (let r = 8; r < this.moduleCount - 8; r++) {
if (this.modules[r][6] != null) {
continue;
}
this.modules[r][6] = (r % 2 == 0);
}
for (let c = 8; c < this.moduleCount - 8; c++) {
if (this.modules[6][c] != null) {
continue;
}
this.modules[6][c] = (c % 2 == 0);
}
}
setupPositionAdjustPattern() {
let pos = QRUtil.getPatternPosition(this.typeNumber);
for (let i = 0; i < pos.length; i++) {
for (let j = 0; j < pos.length; j++) {
let row = pos[i],
col = pos[j];
if (this.modules[row][col] != null) {
continue;
}
for (let r = -2; r <= 2; r++) {
for (let c = -2; c <= 2; c++) {
this.modules[row + r][col + c] = r == -2 || r == 2 || c == -2 || c == 2 || (r == 0 && c ==
0);
}
}
}
}
}
setupTypeNumber(test) {
let bits = QRUtil.getBCHTypeNumber(this.typeNumber);
for (let i = 0; i < 18; i++) {
this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = (!test && ((bits >> i) & 1) == 1);
}
for (let i = 0; i < 18; i++) {
this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = (!test && ((bits >> i) & 1) == 1);
}
}
setupTypeInfo(test, maskPattern) {
let data = (this.errorCorrectLevel << 3) | maskPattern,
bits = QRUtil.getBCHTypeInfo(data);
for (let i = 0; i < 15; i++) {
let mod = (!test && ((bits >> i) & 1) == 1);
if (i < 6) {
this.modules[i][8] = mod;
} else if (i < 8) {
this.modules[i + 1][8] = mod;
} else {
this.modules[this.moduleCount - 15 + i][8] = mod;
}
}
for (let i = 0; i < 15; i++) {
let mod = (!test && ((bits >> i) & 1) == 1);
if (i < 8) {
this.modules[8][this.moduleCount - i - 1] = mod;
} else if (i < 9) {
this.modules[8][15 - i - 1 + 1] = mod;
} else {
this.modules[8][15 - i - 1] = mod;
}
}
this.modules[this.moduleCount - 8][8] = (!test);
}
mapData(data, maskPattern) {
let inc = -1,
row = this.moduleCount - 1,
bitIndex = 7,
byteIndex = 0;
for (let col = this.moduleCount - 1; col > 0; col -= 2) {
if (col == 6) col--;
while (true) {
for (let c = 0; c < 2; c++) {
if (this.modules[row][col - c] == null) {
let dark = false;
if (byteIndex < data.length) {
dark = (((data[byteIndex] >>> bitIndex) & 1) == 1);
}
let mask = QRUtil.getMask(maskPattern, row, col - c);
if (mask) {
dark = !dark;
}
this.modules[row][col - c] = dark;
bitIndex--;
if (bitIndex == -1) {
byteIndex++;
bitIndex = 7;
}
}
}
row += inc;
if (row < 0 || this.moduleCount <= row) {
row -= inc;
inc = -inc;
break;
}
}
}
}
}
QRCodeModel.PAD0 = 0xEC;
QRCodeModel.PAD1 = 0x11;
QRCodeModel.createData = (typeNumber, errorCorrectLevel, dataList) => {
let rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel),
buffer = new QRBitBuffer();
for (let i = 0; i < dataList.length; i++) {
let data = dataList[i];
buffer.put(data.mode, 4);
buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber));
data.write(buffer);
}
let totalDataCount = 0;
for (let i = 0; i < rsBlocks.length; i++) {
totalDataCount += rsBlocks[i].dataCount;
}
if (buffer.getLengthInBits() > totalDataCount * 8) {
/*
throw new Error("code length overflow. (" +
buffer.getLengthInBits() +
">" +
totalDataCount * 8 +
")");
*/
throwError("code length overflow. (" +
buffer.getLengthInBits() +
">" +
totalDataCount * 8 +
")");
}
if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
buffer.put(0, 4);
}
while (buffer.getLengthInBits() % 8 != 0) {
buffer.putBit(false);
}
while (true) {
if (buffer.getLengthInBits() >= totalDataCount * 8) {
break;
}
buffer.put(QRCodeModel.PAD0, 8);
if (buffer.getLengthInBits() >= totalDataCount * 8) {
break;
}
buffer.put(QRCodeModel.PAD1, 8);
}
return QRCodeModel.createBytes(buffer, rsBlocks);
};
QRCodeModel.createBytes = (buffer, rsBlocks) => {
let offset = 0,
maxDcCount = 0,
maxEcCount = 0,
dcData = new Array(rsBlocks.length),
ecData = new Array(rsBlocks.length);
for (let r = 0; r < rsBlocks.length; r++) {
let dcCount = rsBlocks[r].dataCount,
ecCount = rsBlocks[r].totalCount - dcCount;
maxDcCount = Math.max(maxDcCount, dcCount);
maxEcCount = Math.max(maxEcCount, ecCount);
dcData[r] = new Array(dcCount);
for (let i = 0; i < dcData[r].length; i++) {
dcData[r][i] = 0xff & buffer.buffer[i + offset];
}
offset += dcCount;
let rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount),
rawPoly = new QRPolynomial(dcData[r], rsPoly.getLength() - 1),
modPoly = rawPoly.mod(rsPoly);
ecData[r] = new Array(rsPoly.getLength() - 1);
for (let i = 0; i < ecData[r].length; i++) {
let modIndex = i + modPoly.getLength() - ecData[r].length;
ecData[r][i] = (modIndex >= 0) ? modPoly.get(modIndex) : 0;
}
}
let totalCodeCount = 0;
for (let i = 0; i < rsBlocks.length; i++) {
totalCodeCount += rsBlocks[i].totalCount;
}
let data = new Array(totalCodeCount),
index = 0;
for (let i = 0; i < maxDcCount; i++) {
for (let r = 0; r < rsBlocks.length; r++) {
if (i < dcData[r].length) {
data[index++] = dcData[r][i];
}
}
}
for (let i = 0; i < maxEcCount; i++) {
for (let r = 0; r < rsBlocks.length; r++) {
if (i < ecData[r].length) {
data[index++] = ecData[r][i];
}
}
}
return data;
};
/*
* class QRPolynomial
* */
class QRPolynomial {
constructor(num, shift) {
if (num.length == undefined) {
//throw new Error(num.length + '/' + shift);
throwError(num.length + '/' + shift);
}
let offset = 0;
while (offset < num.length && num[offset] == 0) {
offset++;
}
this.num = new Array(num.length - offset + shift);
for (let i = 0; i < num.length - offset; i++) {
this.num[i] = num[i + offset];
}
}
get(index) {
return this.num[index];
}
getLength() {
return this.num.length;
}
multiply(e) {
let num = new Array(this.getLength() + e.getLength() - 1);
for (let i = 0; i < this.getLength(); i++) {
for (let j = 0; j < e.getLength(); j++) {
num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i)) + QRMath.glog(e.get(j)));
}
}
return new QRPolynomial(num, 0);
}
mod(e) {
if (this.getLength() - e.getLength() < 0) {
return this;
}
let ratio = QRMath.glog(this.get(0)) - QRMath.glog(e.get(0)),
num = new Array(this.getLength());
for (let i = 0; i < this.getLength(); i++) {
num[i] = this.get(i);
}
for (let i = 0; i < e.getLength(); i++) {
num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio);
}
return new QRPolynomial(num, 0).mod(e);
}
}
/*
* class QRRSBlock
* */
class QRRSBlock {
constructor(totalCount, dataCount) {
this.totalCount = totalCount;
this.dataCount = dataCount;
}
}
QRRSBlock.RS_BLOCK_TABLE = [
[1, 26, 19],
[1, 26, 16],
[1, 26, 13],
[1, 26, 9],
[1, 44, 34],
[1, 44, 28],
[1, 44, 22],
[1, 44, 16],
[1, 70, 55],
[1, 70, 44],
[2, 35, 17],
[2, 35, 13],
[1, 100, 80],
[2, 50, 32],
[2, 50, 24],
[4, 25, 9],
[1, 134, 108],
[2, 67, 43],
[2, 33, 15, 2, 34, 16],
[2, 33, 11, 2, 34, 12],
[2, 86, 68],
[4, 43, 27],
[4, 43, 19],
[4, 43, 15],
[2, 98, 78],
[4, 49, 31],
[2, 32, 14, 4, 33, 15],
[4, 39, 13, 1, 40, 14],
[2, 121, 97],
[2, 60, 38, 2, 61, 39],
[4, 40, 18, 2, 41, 19],
[4, 40, 14, 2, 41, 15],
[2, 146, 116],
[3, 58, 36, 2, 59, 37],
[4, 36, 16, 4, 37, 17],
[4, 36, 12, 4, 37, 13],
[2, 86, 68, 2, 87, 69],
[4, 69, 43, 1, 70, 44],
[6, 43, 19, 2, 44, 20],
[6, 43, 15, 2, 44, 16],
[4, 101, 81],
[1, 80, 50, 4, 81, 51],
[4, 50, 22, 4, 51, 23],
[3, 36, 12, 8, 37, 13],
[2, 116, 92, 2, 117, 93],
[6, 58, 36, 2, 59, 37],
[4, 46, 20, 6, 47, 21],
[7, 42, 14, 4, 43, 15],
[4, 133, 107],
[8, 59, 37, 1, 60, 38],
[8, 44, 20, 4, 45, 21],
[12, 33, 11, 4, 34, 12],
[3, 145, 115, 1, 146, 116],
[4, 64, 40, 5, 65, 41],
[11, 36, 16, 5, 37, 17],
[11, 36, 12, 5, 37, 13],
[5, 109, 87, 1, 110, 88],
[5, 65, 41, 5, 66, 42],
[5, 54, 24, 7, 55, 25],
[11, 36, 12],
[5, 122, 98, 1, 123, 99],
[7, 73, 45, 3, 74, 46],
[15, 43, 19, 2, 44, 20],
[3, 45, 15, 13, 46, 16],
[1, 135, 107, 5, 136, 108],
[10, 74, 46, 1, 75, 47],
[1, 50, 22, 15, 51, 23],
[2, 42, 14, 17, 43, 15],
[5, 150, 120, 1, 151, 121],
[9, 69, 43, 4, 70, 44],
[17, 50, 22, 1, 51, 23],
[2, 42, 14, 19, 43, 15],
[3, 141, 113, 4, 142, 114],
[3, 70, 44, 11, 71, 45],
[17, 47, 21, 4, 48, 22],
[9, 39, 13, 16, 40, 14],
[3, 135, 107, 5, 136, 108],
[3, 67, 41, 13, 68, 42],
[15, 54, 24, 5, 55, 25],
[15, 43, 15, 10, 44, 16],
[4, 144, 116, 4, 145, 117],
[17, 68, 42],
[17, 50, 22, 6, 51, 23],
[19, 46, 16, 6, 47, 17],
[2, 139, 111, 7, 140, 112],
[17, 74, 46],
[7, 54, 24, 16, 55, 25],
[34, 37, 13],
[4, 151, 121, 5, 152, 122],
[4, 75, 47, 14, 76, 48],
[11, 54, 24, 14, 55, 25],
[16, 45, 15, 14, 46, 16],
[6, 147, 117, 4, 148, 118],
[6, 73, 45, 14, 74, 46],
[11, 54, 24, 16, 55, 25],
[30, 46, 16, 2, 47, 17],
[8, 132, 106, 4, 133, 107],
[8, 75, 47, 13, 76, 48],
[7, 54, 24, 22, 55, 25],
[22, 45, 15, 13, 46, 16],
[10, 142, 114, 2, 143, 115],
[19, 74, 46, 4, 75, 47],
[28, 50, 22, 6, 51, 23],
[33, 46, 16, 4, 47, 17],
[8, 152, 122, 4, 153, 123],
[22, 73, 45, 3, 74, 46],
[8, 53, 23, 26, 54, 24],
[12, 45, 15, 28, 46, 16],
[3, 147, 117, 10, 148, 118],
[3, 73, 45, 23, 74, 46],
[4, 54, 24, 31, 55, 25],
[11, 45, 15, 31, 46, 16],
[7, 146, 116, 7, 147, 117],
[21, 73, 45, 7, 74, 46],
[1, 53, 23, 37, 54, 24],
[19, 45, 15, 26, 46, 16],
[5, 145, 115, 10, 146, 116],
[19, 75, 47, 10, 76, 48],
[15, 54, 24, 25, 55, 25],
[23, 45, 15, 25, 46, 16],
[13, 145, 115, 3, 146, 116],
[2, 74, 46, 29, 75, 47],
[42, 54, 24, 1, 55, 25],
[23, 45, 15, 28, 46, 16],
[17, 145, 115],
[10, 74, 46, 23, 75, 47],
[10, 54, 24, 35, 55, 25],
[19, 45, 15, 35, 46, 16],
[17, 145, 115, 1, 146, 116],
[14, 74, 46, 21, 75, 47],
[29, 54, 24, 19, 55, 25],
[11, 45, 15, 46, 46, 16],
[13, 145, 115, 6, 146, 116],
[14, 74, 46, 23, 75, 47],
[44, 54, 24, 7, 55, 25],
[59, 46, 16, 1, 47, 17],
[12, 151, 121, 7, 152, 122],
[12, 75, 47, 26, 76, 48],
[39, 54, 24, 14, 55, 25],
[22, 45, 15, 41, 46, 16],
[6, 151, 121, 14, 152, 122],
[6, 75, 47, 34, 76, 48],
[46, 54, 24, 10, 55, 25],
[2, 45, 15, 64, 46, 16],
[17, 152, 122, 4, 153, 123],
[29, 74, 46, 14, 75, 47],
[49, 54, 24, 10, 55, 25],
[24, 45, 15, 46, 46, 16],
[4, 152, 122, 18, 153, 123],
[13, 74, 46, 32, 75, 47],
[48, 54, 24, 14, 55, 25],
[42, 45, 15, 32, 46, 16],
[20, 147, 117, 4, 148, 118],
[40, 75, 47, 7, 76, 48],
[43, 54, 24, 22, 55, 25],
[10, 45, 15, 67, 46, 16],
[19, 148, 118, 6, 149, 119],
[18, 75, 47, 31, 76, 48],
[34, 54, 24, 34, 55, 25],
[20, 45, 15, 61, 46, 16]
];
QRRSBlock.getRSBlocks = function(typeNumber, errorCorrectLevel) {
let rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
if (!rsBlock) {
//throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel);
throwError("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel);
}
let length = rsBlock.length / 3,
list = [];
for (let i = 0; i < length; i++) {
let count = rsBlock[i * 3],
totalCount = rsBlock[i * 3 + 1],
dataCount = rsBlock[i * 3 + 2];
for (let j = 0; j < count; j++) {
list.push(new QRRSBlock(totalCount, dataCount));
}
}
return list;
};
QRRSBlock.getRsBlockTable = function(typeNumber, errorCorrectLevel) {
switch (errorCorrectLevel) {
case QRErrorCorrectLevel.L:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4];
case QRErrorCorrectLevel.M:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
case QRErrorCorrectLevel.Q:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
case QRErrorCorrectLevel.H:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
default:
return undefined;
}
};
/*
* class QRBitBuffer
* */
class QRBitBuffer {
constructor() {
this.buffer = [];
this.length = 0;
}
get(index) {
let bufIndex = Math.floor(index / 8);
return ((this.buffer[bufIndex] >>> (7 - index % 8)) & 1) == 1;
}
put(num, length) {
for (let i = 0; i < length; i++) {
this.putBit(((num >>> (length - i - 1)) & 1) == 1);
}
}
getLengthInBits() {
return this.length;
}
putBit(bit) {
let bufIndex = Math.floor(this.length / 8);
if (this.buffer.length <= bufIndex) {
this.buffer.push(0);
}
if (bit) {
this.buffer[bufIndex] |= (0x80 >>> (this.length % 8));
}
this.length++;
}
}
/*
* Class Drawing
* */
class Drawing {
constructor(el, opts) {
this._opts = opts;
this._el = el;
this._ctx = uni.createCanvasContext(el);
}
draw(QRCode) {
let ctx = this._ctx,
opts = this._opts;
var ctxPosFix = opts.width / 20;
//console.log(opts.width)
let count = QRCode.getModuleCount(),
width = (opts.width - 2 * ctxPosFix) / count,
height = (opts.height - 2 * ctxPosFix) / count,
roundedWidth = Math.round(width),
roundedHeight = Math.round(height);
this.clear();
ctx.setFillStyle('#fff');
ctx.fillRect(0, 0, this._opts.width + 4 * ctxPosFix, this._opts.width + 4 * ctxPosFix);
for (let row = 0; row < count; row++) {
for (let col = 0; col < count; col++) {
let isDark = QRCode.isDark(row, col),
left = col * width + ctxPosFix,
top = row * height + ctxPosFix;
ctx.setStrokeStyle(isDark ? opts.colorDark : opts.colorLight);
ctx.setLineWidth(1);
ctx.setFillStyle(isDark ? opts.colorDark : opts.colorLight);
ctx.fillRect(left, top, width, height);
ctx.strokeRect(
Math.floor(left) + 0.5,
Math.floor(top) + 0.5,
roundedWidth,
roundedHeight
);
ctx.strokeRect(
Math.ceil(left) - 0.5,
Math.ceil(top) - 0.5,
roundedWidth,
roundedHeight
);
}
}
this._opts.logo && this.drawImg(this._opts.logo, this._opts.width, ctx);
ctx.draw();
this._bIsPainted = true;
//console.log(this._opts.successTips);
//anlib
//console.log('-------- console.log(-------', drawingOptsSuccessTips);
if (this._opts.successTips && drawingOptsSuccessTips) {
// uni.hideLoading();
uni.showToast({
title: '生成成功',
icon: 'success',
duration: 1000
});
}
drawingOptsSuccessTips = true;
}
clear() {
this._ctx.clearRect(0, 0, this._opts.width, this._opts.height);
}
/** anlib **/
/**
* 二维码上添加图片
*/
drawImg(src, width, ctx) {
// logo相对二维码的比例
var scale = 5;
// logo相对二维码的大小
var imgSize = width / scale;
// 偏移位置起始点
var imgPos = width / scale * 2;
// 二维码边框尺寸，这里设置为原宽度的80分之一
var imgPosFix = width / 80;
//console.log('width', width);
//console.log('imgSize', imgSize);
//console.log('imgPos', imgPos);
//console.log('imgPosFix', imgPosFix);
//console.log('src', src);
ctx.setFillStyle('#fff');
ctx.fillRect(imgPos - imgPosFix, imgPos - imgPosFix, imgSize + imgPosFix * 2, imgSize + imgPosFix * 2);
ctx.beginPath();
ctx.moveTo(imgPos - imgPosFix, imgPos - imgPosFix);
ctx.stroke();
ctx.closePath();
ctx.drawImage(src, imgPos, imgPos, imgSize, imgSize);
ctx.beginPath();
}
}
/*
* Class QRCode
* */
let QRCode = (() => {
/**
* Get the type by string length
* @author anlib
* @private
* @param {String} text
* @param {Number} correctLevel
* @return {Number} type
*/
function getTypeNumber(text, correctLevel) {
let type = 1,
length = getUTF8Length(text),
QRCodeLimitLength = [
[17, 14, 11, 7],
[32, 26, 20, 14],
[53, 42, 32, 24],
[78, 62, 46, 34],
[106, 84, 60, 44],
[134, 106, 74, 58],
[154, 122, 86, 64],
[192, 152, 108, 84],
[230, 180, 130, 98],
[271, 213, 151, 119],
[321, 251, 177, 137],
[367, 287, 203, 155],
[425, 331, 241, 177],
[458, 362, 258, 194],
[520, 412, 292, 220],
[586, 450, 322, 250],
[644, 504, 364, 280],
[718, 560, 394, 310],
[792, 624, 442, 338],
[858, 666, 482, 382],
[929, 711, 509, 403],
[1003, 779, 565, 439],
[1091, 857, 611, 461],
[1171, 911, 661, 511],
[1273, 997, 715, 535],
[1367, 1059, 751, 593],
[1465, 1125, 805, 625],
[1528, 1190, 868, 658],
[1628, 1264, 908, 698],
[1732, 1370, 982, 742],
[1840, 1452, 1030, 790],
[1952, 1538, 1112, 842],
[2068, 1628, 1168, 898],
[2188, 1722, 1228, 958],
[2303, 1809, 1283, 983],
[2431, 1911, 1351, 1051],
[2563, 1989, 1423, 1093],
[2699, 2099, 1499, 1139],
[2809, 2213, 1579, 1219],
[2953, 2331, 1663, 1273]
];
for (let i = 0, len = QRCodeLimitLength.length; i <= len; i++) {
let limit = 0;
switch (correctLevel) {
case QRErrorCorrectLevel.L:
limit = QRCodeLimitLength[i][0];
break;
case QRErrorCorrectLevel.M:
limit = QRCodeLimitLength[i][1];
break;
case QRErrorCorrectLevel.Q:
limit = QRCodeLimitLength[i][2];
break;
case QRErrorCorrectLevel.H:
limit = QRCodeLimitLength[i][3];
break;
}
if (length <= limit) {
break;
} else {
type++;
}
}
if (type > QRCodeLimitLength.length) {
// throw new Error('Too long data'); //supfire
throwError('Too long data');
}
return type;
}
function getUTF8Length(text) {
let replacedText = encodeURI(text).toString().replace(/\%[0-9a-fA-F]{2}/g, 'a');
return replacedText.length + (replacedText.length != text ? 3 : 0);
}
class Fn {
constructor(el, opts) {
this._opts = {
width: 300,
height: 300,
typeNumber: 4,
colorDark: '#000000',
colorLight: '#ffffff',
correctLevel: Fn.correctLevel.H,
logo: false,
successTips: false,
};
if (typeof opts === 'string') {
opts = {
text: opts
};
}
// Overwrites options 简单拷贝
if (opts) {
for (let i in opts) {
if (opts.hasOwnProperty(i)) {
this._opts[i] = opts[i];
}
}
}
this._el = el;
this._QRCode = null;
this._drawing = new Drawing(this._el, this._opts);
if (this._opts.text) {
this.makeCode(this._opts.text);
}
}
makeCode(text) {
this._QRCode = new QRCodeModel(getTypeNumber(text, this._opts.correctLevel), this._opts
.correctLevel);
this._QRCode.addData(text);
this._QRCode.make();
this._drawing.draw(this._QRCode);
}
clear() {
this._drawing.clear();
}
}
Fn.correctLevel = QRErrorCorrectLevel;
return Fn;
})();
/** anlib **/
let drawingOptsSuccessTips = true;
/**
* 抛出错误
*/
function throwError(str) {
// uni.hideLoading();
uni.showToast({
title: '有字符暂不支持',
icon: 'none',
duration: 2000
});
drawingOptsSuccessTips = false;
//console.log(' drawingOptsSuccessTips ', drawingOptsSuccessTips);
//console.log('---------str', str)
//throw new Error(str);
}
// module.exports = QRCode;
export default QRCode;