easyqrcodejs-nodejs
Version:
NodeJS QRCode generator. Can save image or svg to file, get standard base64 image data url text or get SVG serialized text. Cross-browser QRCode generator for pure javascript. Support Dot style, Logo, Background image, Colorful, Title etc. settings. suppo
1,694 lines (1,604 loc) • 62.5 kB
JavaScript
/**
* EasyQRCodeJS-NodeJS
*
* NodeJS QRCode generator. Can save image or svg to file, get standard base64 image data url text or get SVG serialized text. Cross-browser QRCode generator for pure javascript. Support Dot style, Logo, Background image, Colorful, Title etc. settings. support binary mode.(Running without DOM on server side)
*
* Version 4.5.3
*
* @author [ inthinkcolor@gmail.com ]
*
* @see https://github.com/ushelp/EasyQRCodeJS-NodeJS
* @see http://www.easyproject.cn/easyqrcodejs/tryit.html
* @see https://github.com/ushelp/EasyQRCodeJS
*
* Copyright 2017 Ray, EasyProject
* Released under the MIT license
*
* [Node.js]
*
*/
var { createCanvas, loadImage, Image } = require("canvas");
var jsdom = require("jsdom");
var C2S = require("./canvas2svg");
var fs = require("fs");
var { optimize } = require("svgo");
const { JSDOM } = jsdom;
const win = new JSDOM().window;
function QR8bitByte(data, binary, utf8WithoutBOM) {
this.mode = QRMode.MODE_8BIT_BYTE;
this.data = data;
this.parsedData = [];
function toUTF8Array(str) {
var utf8 = [];
for (var i = 0; i < str.length; i++) {
var charcode = str.charCodeAt(i);
if (charcode < 0x80) utf8.push(charcode);
else if (charcode < 0x800) {
utf8.push(0xc0 | (charcode >> 6), 0x80 | (charcode & 0x3f));
} else if (charcode < 0xd800 || charcode >= 0xe000) {
utf8.push(
0xe0 | (charcode >> 12),
0x80 | ((charcode >> 6) & 0x3f),
0x80 | (charcode & 0x3f)
);
} else {
i++;
charcode =
0x10000 + (((charcode & 0x3ff) << 10) | (str.charCodeAt(i) & 0x3ff));
utf8.push(
0xf0 | (charcode >> 18),
0x80 | ((charcode >> 12) & 0x3f),
0x80 | ((charcode >> 6) & 0x3f),
0x80 | (charcode & 0x3f)
);
}
}
return utf8;
}
if (binary) {
for (var i = 0, l = this.data.length; i < l; i++) {
var byteArray = [];
var code = this.data.charCodeAt(i);
byteArray[0] = code;
this.parsedData.push(byteArray);
}
this.parsedData = Array.prototype.concat.apply([], this.parsedData);
} else {
this.parsedData = toUTF8Array(data);
}
this.parsedData = Array.prototype.concat.apply([], this.parsedData);
if (!utf8WithoutBOM && this.parsedData.length != this.data.length) {
this.parsedData.unshift(191);
this.parsedData.unshift(187);
this.parsedData.unshift(239);
}
}
QR8bitByte.prototype = {
getLength: function (buffer) {
return this.parsedData.length;
},
write: function (buffer) {
for (var i = 0, l = this.parsedData.length; i < l; i++) {
buffer.put(this.parsedData[i], 8);
}
},
};
function QRCodeModel(typeNumber, errorCorrectLevel) {
this.typeNumber = typeNumber;
this.errorCorrectLevel = errorCorrectLevel;
this.modules = null;
this.moduleCount = 0;
this.dataCache = null;
this.dataList = [];
}
QRCodeModel.prototype = {
addData: function (data, binary, utf8WithoutBOM) {
var newData = new QR8bitByte(data, binary, utf8WithoutBOM);
this.dataList.push(newData);
this.dataCache = null;
},
isDark: function (row, col) {
if (
row < 0 ||
this.moduleCount <= row ||
col < 0 ||
this.moduleCount <= col
) {
throw new Error(row + "," + col);
}
return this.modules[row][col][0];
},
getEye: function (row, col) {
if (
row < 0 ||
this.moduleCount <= row ||
col < 0 ||
this.moduleCount <= col
) {
throw new Error(row + "," + col);
}
var block = this.modules[row][col]; // [isDark(ture/false), EyeOuterOrInner(O/I), Position(TL/TR/BL/A) ]
if (block[1]) {
var type = "P" + block[1] + "_" + block[2]; //PO_TL, PI_TL, PO_TR, PI_TR, PO_BL, PI_BL
if (block[2] == "A") {
type = "A" + block[1]; // AI, AO
}
return {
isDarkBlock: block[0],
type: type,
};
} else {
return null;
}
},
getModuleCount: function () {
return this.moduleCount;
},
make: function () {
this.makeImpl(false, this.getBestMaskPattern());
},
makeImpl: function (test, maskPattern) {
this.moduleCount = this.typeNumber * 4 + 17;
this.modules = new Array(this.moduleCount);
for (var row = 0; row < this.moduleCount; row++) {
this.modules[row] = new Array(this.moduleCount);
for (var col = 0; col < this.moduleCount; col++) {
this.modules[row][col] = []; // [isDark(ture/false), EyeOuterOrInner(O/I), Position(TL/TR/BL) ]
}
}
this.setupPositionProbePattern(0, 0, "TL"); // TopLeft, TL
this.setupPositionProbePattern(this.moduleCount - 7, 0, "BL"); // BotoomLeft, BL
this.setupPositionProbePattern(0, this.moduleCount - 7, "TR"); // TopRight, TR
this.setupPositionAdjustPattern("A"); // Alignment, A
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: function (row, col, posName) {
for (var r = -1; r <= 7; r++) {
if (row + r <= -1 || this.moduleCount <= row + r) continue;
for (var c = -1; c <= 7; c++) {
if (col + c <= -1 || this.moduleCount <= col + c) continue;
if (
(0 <= r && r <= 6 && (c == 0 || c == 6)) ||
(0 <= c && c <= 6 && (r == 0 || r == 6)) ||
(2 <= r && r <= 4 && 2 <= c && c <= 4)
) {
this.modules[row + r][col + c][0] = true;
this.modules[row + r][col + c][2] = posName; // Position
if (r == -0 || c == -0 || r == 6 || c == 6) {
this.modules[row + r][col + c][1] = "O"; // Position Outer
} else {
this.modules[row + r][col + c][1] = "I"; // Position Inner
}
} else {
this.modules[row + r][col + c][0] = false;
}
}
}
},
getBestMaskPattern: function () {
var minLostPoint = 0;
var pattern = 0;
for (var i = 0; i < 8; i++) {
this.makeImpl(true, i);
var lostPoint = QRUtil.getLostPoint(this);
if (i == 0 || minLostPoint > lostPoint) {
minLostPoint = lostPoint;
pattern = i;
}
}
return pattern;
},
createMovieClip: function (target_mc, instance_name, depth) {
var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth);
var cs = 1;
this.make();
for (var row = 0; row < this.modules.length; row++) {
var y = row * cs;
for (var col = 0; col < this.modules[row].length; col++) {
var x = col * cs;
var dark = this.modules[row][col][0];
if (dark) {
qr_mc.beginFill(0, 100);
qr_mc.moveTo(x, y);
qr_mc.lineTo(x + cs, y);
qr_mc.lineTo(x + cs, y + cs);
qr_mc.lineTo(x, y + cs);
qr_mc.endFill();
}
}
}
return qr_mc;
},
setupTimingPattern: function () {
for (var r = 8; r < this.moduleCount - 8; r++) {
if (this.modules[r][6][0] != null) {
continue;
}
this.modules[r][6][0] = r % 2 == 0;
}
for (var c = 8; c < this.moduleCount - 8; c++) {
if (this.modules[6][c][0] != null) {
continue;
}
this.modules[6][c][0] = c % 2 == 0;
}
},
setupPositionAdjustPattern: function (posName) {
var pos = QRUtil.getPatternPosition(this.typeNumber);
for (var i = 0; i < pos.length; i++) {
for (var j = 0; j < pos.length; j++) {
var row = pos[i];
var col = pos[j];
if (this.modules[row][col][0] != null) {
continue;
}
for (var r = -2; r <= 2; r++) {
for (var c = -2; c <= 2; c++) {
if (r == -2 || r == 2 || c == -2 || c == 2 || (r == 0 && c == 0)) {
this.modules[row + r][col + c][0] = true;
this.modules[row + r][col + c][2] = posName; // Position
if (r == -2 || c == -2 || r == 2 || c == 2) {
this.modules[row + r][col + c][1] = "O"; // Position Outer
} else {
this.modules[row + r][col + c][1] = "I"; // Position Inner
}
} else {
this.modules[row + r][col + c][0] = false;
}
}
}
}
}
},
setupTypeNumber: function (test) {
var bits = QRUtil.getBCHTypeNumber(this.typeNumber);
for (var i = 0; i < 18; i++) {
var mod = !test && ((bits >> i) & 1) == 1;
this.modules[Math.floor(i / 3)][(i % 3) + this.moduleCount - 8 - 3][0] =
mod;
}
for (var i = 0; i < 18; i++) {
var mod = !test && ((bits >> i) & 1) == 1;
this.modules[(i % 3) + this.moduleCount - 8 - 3][Math.floor(i / 3)][0] =
mod;
}
},
setupTypeInfo: function (test, maskPattern) {
var data = (this.errorCorrectLevel << 3) | maskPattern;
var bits = QRUtil.getBCHTypeInfo(data);
for (var i = 0; i < 15; i++) {
var mod = !test && ((bits >> i) & 1) == 1;
if (i < 6) {
this.modules[i][8][0] = mod;
} else if (i < 8) {
this.modules[i + 1][8][0] = mod;
} else {
this.modules[this.moduleCount - 15 + i][8][0] = mod;
}
}
for (var i = 0; i < 15; i++) {
var mod = !test && ((bits >> i) & 1) == 1;
if (i < 8) {
this.modules[8][this.moduleCount - i - 1][0] = mod;
} else if (i < 9) {
this.modules[8][15 - i - 1 + 1][0] = mod;
} else {
this.modules[8][15 - i - 1][0] = mod;
}
}
this.modules[this.moduleCount - 8][8][0] = !test;
},
mapData: function (data, maskPattern) {
var inc = -1;
var row = this.moduleCount - 1;
var bitIndex = 7;
var byteIndex = 0;
for (var col = this.moduleCount - 1; col > 0; col -= 2) {
if (col == 6) col--;
while (true) {
for (var c = 0; c < 2; c++) {
if (this.modules[row][col - c][0] == null) {
var dark = false;
if (byteIndex < data.length) {
dark = ((data[byteIndex] >>> bitIndex) & 1) == 1;
}
var mask = QRUtil.getMask(maskPattern, row, col - c);
if (mask) {
dark = !dark;
}
this.modules[row][col - c][0] = 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 = function (typeNumber, errorCorrectLevel, dataList) {
var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
var buffer = new QRBitBuffer();
for (var i = 0; i < dataList.length; i++) {
var data = dataList[i];
buffer.put(data.mode, 4);
buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber));
data.write(buffer);
}
var totalDataCount = 0;
for (var 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 +
")"
);
}
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 = function (buffer, rsBlocks) {
var offset = 0;
var maxDcCount = 0;
var maxEcCount = 0;
var dcdata = new Array(rsBlocks.length);
var ecdata = new Array(rsBlocks.length);
for (var r = 0; r < rsBlocks.length; r++) {
var dcCount = rsBlocks[r].dataCount;
var ecCount = rsBlocks[r].totalCount - dcCount;
maxDcCount = Math.max(maxDcCount, dcCount);
maxEcCount = Math.max(maxEcCount, ecCount);
dcdata[r] = new Array(dcCount);
for (var i = 0; i < dcdata[r].length; i++) {
dcdata[r][i] = 0xff & buffer.buffer[i + offset];
}
offset += dcCount;
var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);
var modPoly = rawPoly.mod(rsPoly);
ecdata[r] = new Array(rsPoly.getLength() - 1);
for (var i = 0; i < ecdata[r].length; i++) {
var modIndex = i + modPoly.getLength() - ecdata[r].length;
ecdata[r][i] = modIndex >= 0 ? modPoly.get(modIndex) : 0;
}
}
var totalCodeCount = 0;
for (var i = 0; i < rsBlocks.length; i++) {
totalCodeCount += rsBlocks[i].totalCount;
}
var data = new Array(totalCodeCount);
var index = 0;
for (var i = 0; i < maxDcCount; i++) {
for (var r = 0; r < rsBlocks.length; r++) {
if (i < dcdata[r].length) {
data[index++] = dcdata[r][i];
}
}
}
for (var i = 0; i < maxEcCount; i++) {
for (var r = 0; r < rsBlocks.length; r++) {
if (i < ecdata[r].length) {
data[index++] = ecdata[r][i];
}
}
}
return data;
};
var QRMode = {
MODE_NUMBER: 1 << 0,
MODE_ALPHA_NUM: 1 << 1,
MODE_8BIT_BYTE: 1 << 2,
MODE_KANJI: 1 << 3,
};
var QRErrorCorrectLevel = {
L: 1,
M: 0,
Q: 3,
H: 2,
};
var QRMaskPattern = {
PATTERN000: 0,
PATTERN001: 1,
PATTERN010: 2,
PATTERN011: 3,
PATTERN100: 4,
PATTERN101: 5,
PATTERN110: 6,
PATTERN111: 7,
};
var 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);
}
},
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);
}
} 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);
}
} 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);
}
} else {
throw new Error("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;
},
};
var QRMath = {
glog: function (n) {
if (n < 1) {
throw new Error("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 (var i = 0; i < 8; i++) {
QRMath.EXP_TABLE[i] = 1 << i;
}
for (var 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 (var i = 0; i < 255; i++) {
QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i;
}
function QRPolynomial(num, shift) {
if (num.length == undefined) {
throw new Error(num.length + "/" + shift);
}
var offset = 0;
while (offset < num.length && num[offset] == 0) {
offset++;
}
this.num = new Array(num.length - offset + shift);
for (var i = 0; i < num.length - offset; i++) {
this.num[i] = num[i + offset];
}
}
QRPolynomial.prototype = {
get: function (index) {
return this.num[index];
},
getLength: function () {
return this.num.length;
},
multiply: function (e) {
var num = new Array(this.getLength() + e.getLength() - 1);
for (var i = 0; i < this.getLength(); i++) {
for (var 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: function (e) {
if (this.getLength() - e.getLength() < 0) {
return this;
}
var ratio = QRMath.glog(this.get(0)) - QRMath.glog(e.get(0));
var num = new Array(this.getLength());
for (var i = 0; i < this.getLength(); i++) {
num[i] = this.get(i);
}
for (var i = 0; i < e.getLength(); i++) {
num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio);
}
return new QRPolynomial(num, 0).mod(e);
},
};
function QRRSBlock(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, 7, 37, 13],
[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) {
var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
if (rsBlock == undefined) {
throw new Error(
"bad rs block @ typeNumber:" +
typeNumber +
"/errorCorrectLevel:" +
errorCorrectLevel
);
}
var length = rsBlock.length / 3;
var list = [];
for (var i = 0; i < length; i++) {
var count = rsBlock[i * 3 + 0];
var totalCount = rsBlock[i * 3 + 1];
var dataCount = rsBlock[i * 3 + 2];
for (var 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 + 0];
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;
}
};
function QRBitBuffer() {
this.buffer = [];
this.length = 0;
}
QRBitBuffer.prototype = {
get: function (index) {
var bufIndex = Math.floor(index / 8);
return ((this.buffer[bufIndex] >>> (7 - (index % 8))) & 1) == 1;
},
put: function (num, length) {
for (var i = 0; i < length; i++) {
this.putBit(((num >>> (length - i - 1)) & 1) == 1);
}
},
getLengthInBits: function () {
return this.length;
},
putBit: function (bit) {
var 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++;
},
};
var 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],
];
/**
* Get the type by string length
*
* @private
* @param {String} sText
* @param {Number} nCorrectLevel
* @return {Number} type
*/
function _getTypeNumber(sText, _htOption) {
var nCorrectLevel = _htOption.correctLevel;
var nType = 1;
var length = _getUTF8Length(sText);
for (var i = 0, len = QRCodeLimitLength.length; i < len; i++) {
var nLimit = 0;
switch (nCorrectLevel) {
case QRErrorCorrectLevel.L:
nLimit = QRCodeLimitLength[i][0];
break;
case QRErrorCorrectLevel.M:
nLimit = QRCodeLimitLength[i][1];
break;
case QRErrorCorrectLevel.Q:
nLimit = QRCodeLimitLength[i][2];
break;
case QRErrorCorrectLevel.H:
nLimit = QRCodeLimitLength[i][3];
break;
}
if (length <= nLimit) {
break;
} else {
nType++;
}
}
if (nType > QRCodeLimitLength.length) {
throw new Error(
"Too long data. the CorrectLevel." +
["M", "L", "H", "Q"][nCorrectLevel] +
" limit length is " +
nLimit
);
}
if (_htOption.version != 0) {
if (nType <= _htOption.version) {
nType = _htOption.version;
_htOption.runVersion = nType;
} else {
console.warn(
"QR Code version " +
_htOption.version +
" too small, run version use " +
nType
);
_htOption.runVersion = nType;
}
}
return nType;
}
function _getUTF8Length(sText) {
var replacedText = encodeURI(sText)
.toString()
.replace(/\%[0-9a-fA-F]{2}/g, "a");
return replacedText.length + (replacedText.length != sText.length ? 3 : 0);
}
/**
* Drawing QRCode by using canvas
*
* @constructor
* @param {HTMLElement} el
* @param {Object} htOption QRCode Options
*/
var Drawing = function (htOption) {
this._bIsPainted = false;
this._htOption = htOption;
this._canvas = createCanvas(200, 200);
if (this._htOption._drawer == "svg") {
this._oContext = {};
} else {
this._oContext = this._canvas.getContext("2d");
}
this._bSupportDataURI = null;
};
/**
* Draw the QRCode
*
* @param {QRCode} oQRCode
*/
Drawing.prototype.draw = function (oQRCode) {
var _htOption = this._htOption;
// QRCode Size
var nCount = oQRCode.getModuleCount();
var nWidth = _htOption.width / nCount;
var nHeight = _htOption.height / nCount;
if (nWidth <= 1) {
nWidth = 1;
}
if (nHeight <= 1) {
nHeight = 1;
}
nWidth = Math.round(nWidth);
nHeight = Math.round(nHeight);
var calculatedQRWidth = nWidth * nCount;
var calculatedQRHeight = nHeight * nCount;
_htOption.heightWithTitle = calculatedQRHeight + _htOption.titleHeight;
_htOption.realHeight = _htOption.heightWithTitle + _htOption.quietZone * 2;
_htOption.realWidth = calculatedQRWidth + _htOption.quietZone * 2;
_htOption.calculatedQRWidth = calculatedQRWidth;
_htOption.calculatedQRHeight = calculatedQRHeight;
this._canvas.width = _htOption.realWidth;
this._canvas.height = _htOption.realHeight;
if (_htOption._drawer == "svg") {
this._oContext = new C2S({
document: win.document,
XMLSerializer: win.XMLSerializer,
width: _htOption.width + this._htOption.quietZone * 2,
height:
_htOption.height + _htOption.titleHeight + this._htOption.quietZone * 2,
veiwBoxWidth: _htOption.realWidth,
veiwBoxHeight: _htOption.realHeight,
});
}
this._oContext.patternQuality = "best"; //'fast'|'good'|'best'|'nearest'|'bilinear'
this._oContext.quality = "best"; //'fast'|'good'|'best'|'nearest'|'bilinear'
this._oContext.textDrawingMode = "path"; // 'path'|'glyph'
this._oContext.antialias = "gray"; // 'default'|'none'|'gray'|'subpixel'
var _oContext = this._oContext;
var autoColorDark = _htOption.autoColorDark;
var autoColorLight = _htOption.autoColorLight;
var notAutoColorLight = "rgba(0,0,0,0)";
// JPG
if (_htOption.format == "JPG") {
_htOption.logoBackgroundTransparent = false;
autoColorDark = _htOption.colorDark;
autoColorLight = _htOption.colorLight;
notAutoColorLight = _htOption.colorLight;
if (_htOption.backgroundImage) {
_oContext.fillStyle = _htOption.colorLight;
_oContext.fillRect(0, 0, this._canvas.width, this._canvas.height);
} else {
if (
_htOption.quietZoneColor == "rgba(0,0,0,0)" ||
_htOption.quietZoneColor == "transparent"
) {
_htOption.quietZoneColor = "#ffffff";
}
_oContext.fillStyle = _htOption.colorLight;
_oContext.fillRect(0, 0, this._canvas.width, this._canvas.height);
}
} else {
_oContext.lineWidth = 0;
_oContext.fillStyle = _htOption.colorLight;
_oContext.fillRect(0, 0, this._canvas.width, this._canvas.height);
_oContext.clearRect(
_htOption.quietZone,
_htOption.quietZone,
_htOption.calculatedQRWidth,
_htOption.titleHeight
);
}
var t = this;
function drawQuietZoneColor() {
if (_htOption.quietZone > 0 && _htOption.quietZoneColor) {
// top
_oContext.lineWidth = 0;
_oContext.fillStyle = _htOption.quietZoneColor;
_oContext.fillRect(0, 0, t._canvas.width, _htOption.quietZone);
// left
_oContext.fillRect(
0,
_htOption.quietZone,
_htOption.quietZone,
t._canvas.height - _htOption.quietZone * 2
);
// right
_oContext.fillRect(
t._canvas.width - _htOption.quietZone,
_htOption.quietZone,
_htOption.quietZone,
t._canvas.height - _htOption.quietZone * 2
);
// bottom
_oContext.fillRect(
0,
t._canvas.height - _htOption.quietZone,
t._canvas.width,
_htOption.quietZone
);
}
}
if (_htOption.backgroundImage) {
// backgroundImage
var bgImg = new Image();
bgImg.onload = function () {
_oContext.globalAlpha = 1;
_oContext.globalAlpha = _htOption.backgroundImageAlpha;
if ((_htOption.title || _htOption.subTitle) && _htOption.titleHeight) {
_oContext.drawImage(
bgImg,
_htOption.quietZone,
_htOption.quietZone + _htOption.titleHeight,
_htOption.width,
_htOption.height
);
} else {
_oContext.drawImage(
bgImg,
0,
0,
_htOption.realWidth,
_htOption.realHeight
);
}
_oContext.globalAlpha = 1;
drawQrcode.call(t, oQRCode);
};
bgImg.onerror = function (e) {
t.reject(e);
};
bgImg.originalSrc = _htOption.backgroundImage;
bgImg.src = _htOption.backgroundImage;
// DoSomething
} else {
drawQrcode.call(t, oQRCode);
}
function drawQrcode(oQRCode) {
for (var row = 0; row < nCount; row++) {
for (var col = 0; col < nCount; col++) {
var nLeft = col * nWidth + _htOption.quietZone;
var nTop = row * nHeight + _htOption.quietZone;
var bIsDark = oQRCode.isDark(row, col);
var eye = oQRCode.getEye(row, col); // { isDark: true/false, type: PO_TL, PI_TL, PO_TR, PI_TR, PO_BL, PI_BL };
var nowDotScale = _htOption.dotScale;
_oContext.lineWidth = 0;
// Color handler
var dColor;
var lColor;
if (eye) {
dColor =
_htOption[eye.type] ||
_htOption[eye.type.substring(0, 2)] ||
_htOption.colorDark;
lColor = _htOption.colorLight;
} else {
if (_htOption.backgroundImage) {
lColor = "rgba(0,0,0,0)";
if (row == 6) {
// dColor = _htOption.timing_H || _htOption.timing || _htOption.colorDark;
if (_htOption.autoColor) {
dColor =
_htOption.timing_H ||
_htOption.timing ||
_htOption.autoColorDark;
lColor = _htOption.autoColorLight;
} else {
dColor =
_htOption.timing_H || _htOption.timing || _htOption.colorDark;
}
} else if (col == 6) {
// dColor = _htOption.timing_V || _htOption.timing || _htOption.colorDark;
if (_htOption.autoColor) {
dColor =
_htOption.timing_V ||
_htOption.timing ||
_htOption.autoColorDark;
lColor = _htOption.autoColorLight;
} else {
dColor =
_htOption.timing_V || _htOption.timing || _htOption.colorDark;
}
} else {
if (_htOption.autoColor) {
dColor = _htOption.autoColorDark;
lColor = _htOption.autoColorLight;
} else {
dColor = _htOption.colorDark;
}
}
} else {
if (row == 6) {
dColor =
_htOption.timing_H || _htOption.timing || _htOption.colorDark;
} else if (col == 6) {
dColor =
_htOption.timing_V || _htOption.timing || _htOption.colorDark;
} else {
dColor = _htOption.colorDark;
}
lColor = _htOption.colorLight;
}
}
_oContext.strokeStyle = bIsDark ? dColor : lColor;
_oContext.fillStyle = bIsDark ? dColor : lColor;
if (eye) {
// Is eye
bIsDark = eye.isDarkBlock;
var type = eye.type;
if (type == "AO") {
nowDotScale = _htOption.dotScaleAO;
} else if (type == "AI") {
nowDotScale = _htOption.dotScaleAI;
} else {
nowDotScale = 1;
}
if (_htOption.backgroundImage && _htOption.autoColor) {
dColor =
(eye.type == "AO" ? _htOption.AI : _htOption.AO) ||
_htOption.autoColorDark;
lColor = _htOption.autoColorLight;
} else {
dColor = (eye.type == "AO" ? _htOption.AI : _htOption.AO) || dColor;
}
_oContext.fillRect(
Math.ceil(nLeft + (nWidth * (1 - nowDotScale)) / 2),
Math.ceil(
_htOption.titleHeight + nTop + (nHeight * (1 - nowDotScale)) / 2
),
Math.ceil(nWidth * nowDotScale),
Math.ceil(nHeight * nowDotScale)
);
} else {
if (row == 6) {
// Timing Pattern
nowDotScale = _htOption.dotScaleTiming_H;
_oContext.fillRect(
Math.ceil(nLeft + (nWidth * (1 - nowDotScale)) / 2),
Math.ceil(
_htOption.titleHeight + nTop + (nHeight * (1 - nowDotScale)) / 2
),
Math.ceil(nWidth * nowDotScale),
Math.ceil(nHeight * nowDotScale)
);
} else if (col == 6) {
// Timing Pattern
nowDotScale = _htOption.dotScaleTiming_V;
_oContext.fillRect(
Math.ceil(nLeft + (nWidth * (1 - nowDotScale)) / 2),
Math.ceil(
_htOption.titleHeight + nTop + (nHeight * (1 - nowDotScale)) / 2
),
Math.ceil(nWidth * nowDotScale),
Math.ceil(nHeight * nowDotScale)
);
} else {
if (_htOption.backgroundImage) {
_oContext.fillRect(
Math.ceil(nLeft + (nWidth * (1 - nowDotScale)) / 2),
Math.ceil(
_htOption.titleHeight +
nTop +
(nHeight * (1 - nowDotScale)) / 2
),
Math.ceil(nWidth * nowDotScale),
Math.ceil(nHeight * nowDotScale)
);
} else {
_oContext.fillRect(
Math.ceil(nLeft + (nWidth * (1 - nowDotScale)) / 2),
Math.ceil(
_htOption.titleHeight +
nTop +
(nHeight * (1 - nowDotScale)) / 2
),
Math.ceil(nWidth * nowDotScale),
Math.ceil(nHeight * nowDotScale)
);
}
}
}
if (_htOption.dotScale != 1 && !eye) {
_oContext.strokeStyle = _htOption.colorLight;
}
}
}
if (_htOption.title) {
_oContext.fillStyle = _htOption.titleBackgroundColor;
_oContext.fillRect(
_htOption.quietZone,
_htOption.quietZone,
_htOption.calculatedQRWidth,
_htOption.titleHeight
);
_oContext.font = _htOption.titleFont;
_oContext.fillStyle = _htOption.titleColor;
_oContext.textAlign = "center";
_oContext.fillText(
_htOption.title,
t._canvas.width / 2,
_htOption.quietZone + _htOption.titleTop
);
}
if (_htOption.subTitle) {
_oContext.font = _htOption.subTitleFont;
_oContext.fillStyle = _htOption.subTitleColor;
_oContext.fillText(
_htOption.subTitle,
t._canvas.width / 2,
_htOption.quietZone + _htOption.subTitleTop
);
}
if (_htOption.logo) {
var img = new Image();
var _this = this;
function generateLogoImg(img) {
var imgContainerW = Math.round(_htOption.width / 3.5);
var imgContainerH = Math.round(_htOption.height / 3.5);
if (imgContainerW !== imgContainerH) {
imgContainerW = imgContainerH;
}
if (_htOption.logoMaxWidth) {
imgContainerW = Math.round(_htOption.logoMaxWidth);
} else if (_htOption.logoWidth) {
imgContainerW = Math.round(_htOption.logoWidth);
}
if (_htOption.logoMaxHeight) {
imgContainerH = Math.round(_htOption.logoMaxHeight);
} else if (_htOption.logoHeight) {
imgContainerH = Math.round(_htOption.logoHeight);
}
var nw;
var nh;
if (typeof img.naturalWidth == "undefined") {
// IE 6/7/8
nw = img.width;
nh = img.height;
} else {
// HTML5 browsers
nw = img.naturalWidth;
nh = img.naturalHeight;
}
if (_htOption.logoMaxWidth || _htOption.logoMaxHeight) {
if (_htOption.logoMaxWidth && nw <= imgContainerW) {
imgContainerW = nw;
}
if (_htOption.logoMaxHeight && nh <= imgContainerH) {
imgContainerH = nh;
}
if (nw <= imgContainerW && nh <= imgContainerH) {
imgContainerW = nw;
imgContainerH = nh;
}
}
var imgContainerX = (_htOption.realWidth - imgContainerW) / 2;
var imgContainerY =
(_htOption.calculatedQRHeight - imgContainerH) / 2 +
_htOption.titleHeight +
_htOption.quietZone;
var imgScale = Math.min(imgContainerW / nw, imgContainerH / nh);
var imgW = nw * imgScale;
var imgH = nh * imgScale;
if (_htOption.logoMaxWidth || _htOption.logoMaxHeight) {
imgContainerW = imgW;
imgContainerH = imgH;
imgContainerX = (_htOption.realWidth - imgContainerW) / 2;
imgContainerY = (_htOption.realWidth - imgContainerH) / 2;
}
// Did Not Use Transparent Logo Image
if (!_htOption.logoBackgroundTransparent) {
//if (!_htOption.logoBackgroundColor) {
//_htOption.logoBackgroundColor = '#ffffff';
//}
_oContext.fillStyle = _htOption.logoBackgroundColor;
_oContext.fillRect(
imgContainerX,
imgContainerY,
imgContainerW,
imgContainerH
);
}
_oContext.drawImage(
img,
imgContainerX + (imgContainerW - imgW) / 2,
imgContainerY + (imgContainerH - imgH) / 2,
imgW,
imgH
);
drawQuietZoneColor();
_this._bIsPainted = true;
_this.makeImage();
}
img.onload = function () {
generateLogoImg(img);
};
img.onerror = function (e) {
// console.error(e);
t.reject(e);
};
img.originalSrc = _htOption.logo;
img.src = _htOption.logo;
// if (img.complete) {
// img.onload = null;
// generateLogoImg(img);
// return;
// }
} else {
drawQuietZoneColor();
this._bIsPainted = true;
this.makeImage();
}
}
};
/**
* Make the image from Canvas
*/
Drawing.prototype.makeImage = function () {
var makeOptions = this.makeOptions;
var t = this;
if (makeOptions.makeType == "FILE") {
if (this._htOption.onRenderingStart) {
this._htOption.onRenderingStart(this._htOption);
}
if (this._htOption._drawer == "svg") {
let data = this._oContext.getSerializedSvg();
fs.writeFile(
makeOptions.path,
optimize(data).data,
"utf8",
function (err) {
if (err) {
t.reject(err);
}
t.resolve({});
}
);
} else {
function scaleCanvas(canvas, newWidth, newHeight) {
// var buffer = canvas.toBuffer('image/png');
// canvas.width = newWidth;
// canvas.height = newHeight;
// var img = new Image();
// img.src = buffer;
// img.onload = () => {
// canvas.width = newWidth;
// canvas.height = newHeight;
// ctx.drawImage(img, 0, 0, newWidth, newHeight);
// };
const newCanvas = createCanvas(newWidth, newHeight);
const newCtx = newCanvas.getContext("2d");
newCtx.drawImage(canvas, 0, 0, newWidth, newHeight);
return newCanvas;
}
this._canvas = scaleCanvas(
this._canvas,
this._htOption.width + this._htOption.quietZone * 2,
this._htOption.height +
this._htOption.titleHeight +
this._htOption.quietZone * 2
);
this._oContext = this._canvas.getContext("2d");
var out = fs.createWriteStream(makeOptions.path);
var stream = undefined;
if (this._htOption.format == "PNG") {
stream = this._canvas.createPNGStream({
compressionLevel: this._htOption.compressionLevel,
});
} else {
stream = this._canvas.createJPEGStream({
quality: this._htOption.quality,
});
}
stream.pipe(out);
out.on("finish", () => {
t.resolve({});
});
}
} else if (makeOptions.makeType == "URL") {
if (this._htOption.onRenderingStart) {