index.js

/**
 * 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 4.4.5
 *
 * @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, 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 = [];

  // Added to support UTF-8 Characters
  for (var i = 0, l = this.data.length; i < l; i++) {
    var byteArray = [];
    var code = this.data.charCodeAt(i);

    if (binary) {
      byteArray[0] = code;
    } else {
      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 (!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;

  var nCount = oQRCode.getModuleCount();
  var nWidth = Math.round(_htOption.width / nCount);
  var nHeight = Math.round((_htOption.height - _htOption.titleHeight) / nCount);
  if (nWidth <= 1) {
    nWidth = 1;
  }
  if (nHeight <= 1) {
    nHeight = 1;
  }

  _htOption.quietZone = Math.round(_htOption.quietZone);

  _htOption.width = nWidth * nCount;
  _htOption.height = nHeight * nCount + _htOption.titleHeight;

  this._canvas.width = _htOption.width + _htOption.quietZone * 2;
  this._canvas.height = _htOption.height + _htOption.quietZone * 2;

  if (_htOption._drawer == 'svg') {
    this._oContext = new C2S({
      document: win.document,
      XMLSerializer: win.XMLSerializer,
      width: this._canvas.width,
      height: this._canvas.height,
    });
  }

  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.width, _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;
      _oContext.drawImage(
        bgImg,
        0,
        _htOption.titleHeight,
        _htOption.width + _htOption.quietZone * 2,
        _htOption.height + _htOption.quietZone * 2 - _htOption.titleHeight
      );
      _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(
            nLeft + (nWidth * (1 - nowDotScale)) / 2,
            _htOption.titleHeight + nTop + (nHeight * (1 - nowDotScale)) / 2,
            nWidth * nowDotScale,
            nHeight * nowDotScale
          );
        } else {
          if (row == 6) {
            // Timing Pattern
            nowDotScale = _htOption.dotScaleTiming_H;

            _oContext.fillRect(
              nLeft + (nWidth * (1 - nowDotScale)) / 2,
              _htOption.titleHeight + nTop + (nHeight * (1 - nowDotScale)) / 2,
              nWidth * nowDotScale,
              nHeight * nowDotScale
            );
          } else if (col == 6) {
            // Timing Pattern
            nowDotScale = _htOption.dotScaleTiming_V;

            _oContext.fillRect(
              nLeft + (nWidth * (1 - nowDotScale)) / 2,
              _htOption.titleHeight + nTop + (nHeight * (1 - nowDotScale)) / 2,
              nWidth * nowDotScale,
              nHeight * nowDotScale
            );
          } else {
            if (_htOption.backgroundImage) {
              _oContext.fillRect(
                nLeft + (nWidth * (1 - nowDotScale)) / 2,
                _htOption.titleHeight + nTop + (nHeight * (1 - nowDotScale)) / 2,
                nWidth * nowDotScale,
                nHeight * nowDotScale
              );
            } else {
              _oContext.fillRect(
                nLeft + (nWidth * (1 - nowDotScale)) / 2,
                _htOption.titleHeight + nTop + (nHeight * (1 - nowDotScale)) / 2,
                nWidth * nowDotScale,
                nHeight * nowDotScale
              );
            }
          }
        }

        if (_htOption.dotScale != 1 && !eye) {
          _oContext.strokeStyle = _htOption.colorLight;
        }
      }
    }

    if (_htOption.title) {
      _oContext.fillStyle = _htOption.titleBackgroundColor;
      // _oContext.fillRect(0, 0, t._canvas.width, _htOption.titleHeight + this._htOption.quietZone);
      _oContext.fillRect(
        _htOption.quietZone,
        _htOption.quietZone,
        _htOption.width,
        _htOption.titleHeight
      );

      _oContext.font = _htOption.titleFont;
      _oContext.fillStyle = _htOption.titleColor;
      _oContext.textAlign = 'center';
      _oContext.fillText(
        _htOption.title,
        t._canvas.width / 2,
        this._htOption.quietZone + this._htOption.titleTop
      );
    }

    if (_htOption.subTitle) {
      _oContext.font = _htOption.subTitleFont;
      _oContext.fillStyle = _htOption.subTitleColor;
      _oContext.fillText(
        _htOption.subTitle,
        t._canvas.width / 2,
        this._htOption.quietZone + this._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.width + _htOption.quietZone * 2 - imgContainerW) / 2;
        var imgContainerY =
          (_htOption.height + _htOption.titleHeight + _htOption.quietZone * 2 - imgContainerH) / 2;

        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.width + _htOption.quietZone * 2 - imgContainerW) / 2;
          imgContainerY =
            (_htOption.height + _htOption.titleHeight + _htOption.quietZone * 2 - 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 {
      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) {
      this._htOption.onRenderingStart(this._htOption);
    }
    if (this._htOption._drawer == 'svg') {
      let data = this._oContext.getSerializedSvg();
      t.resolve(optimize(data).data);
    } else {
      if (this._htOption.format == 'PNG') {
        // dataUrl = this._canvas.toDataURL()
        this._canvas.toDataURL((err, data) => {
          t.resolve(data);
        }); // defaults to PNG
      } else {
        this._canvas.toDataURL('image/jpeg', (err, data) => {
          t.resolve(data);
        });
      }
    }
  } else if (makeOptions.makeType == 'STREAM') {
    if (this._htOption.onRenderingStart) {
      this._htOption.onRenderingStart(this._htOption);
    }

    if (this._htOption.format == 'PNG') {
      // dataUrl = this._canvas.toDataURL()
      t.resolve(this._canvas.createPNGStream());
    } else {
      t.resolve(this._canvas.createJPEGStream());
    }
  }
};

/**
 * Return whether the QRCode is painted or not
 *
 * @return {Boolean}
 */
Drawing.prototype.isPainted = function () {
  return this._bIsPainted;
};

/**
 * @private
 * @param {Number} nNumber
 */
Drawing.prototype.round = function (nNumber) {
  if (!nNumber) {
    return nNumber;
  }
  return Math.floor(nNumber * 1000) / 1000;
};

function QRCode(vOption) {
  this._htOption = {
    width: 256,
    height: 256,
    typeNumber: 4,
    colorDark: '#000000',
    colorLight: '#ffffff',
    correctLevel: QRErrorCorrectLevel.H,

    dotScale: 1, // For body block, must be greater than 0, less than or equal to 1. default is 1

    dotScaleTiming: 1, // Dafault for timing block , must be greater than 0, less than or equal to 1. default is 1
    dotScaleTiming_H: undefined, // For horizontal timing block, must be greater than 0, less than or equal to 1. default is 1
    dotScaleTiming_V: undefined, // For vertical timing block, must be greater than 0, less than or equal to 1. default is 1

    dotScaleA: 1, // Dafault for alignment block, must be greater than 0, less than or equal to 1. default is 1
    dotScaleAO: undefined, // For alignment outer block, must be greater than 0, less than or equal to 1. default is 1
    dotScaleAI: undefined, // For alignment inner block, must be greater than 0, less than or equal to 1. default is 1

    quietZone: 0,
    quietZoneColor: 'rgba(0,0,0,0)',

    title: '',
    titleFont: 'normal normal bold 16px Arial',
    titleColor: '#000000',
    titleBackgroundColor: '#ffffff',
    titleHeight: 0, // Title Height, Include subTitle
    titleTop: 30, // draws y coordinates. default is 30

    subTitle: '',
    subTitleFont: 'normal normal normal 14px Arial',
    subTitleColor: '#4F4F4F',
    subTitleTop: 60, // draws y coordinates. default is 0

    logo: undefined,
    logoWidth: undefined,
    logoHeight: undefined,
    logoMaxWidth: undefined,
    logoMaxHeight: undefined,
    logoBackgroundColor: '#ffffff',
    logoBackgroundTransparent: false,

    // === Posotion Pattern(Eye) Color
    PO: undefined, // Global Posotion Outer color. if not set, the defaut is `colorDark`
    PI: undefined, // Global Posotion Inner color. if not set, the defaut is `colorDark`
    PO_TL: undefined, // Posotion Outer - Top Left
    PI_TL: undefined, // Posotion Inner - Top Left
    PO_TR: undefined, // Posotion Outer - Top Right
    PI_TR: undefined, // Posotion Inner - Top Right
    PO_BL: undefined, // Posotion Outer - Bottom Left
    PI_BL: undefined, // Posotion Inner - Bottom Left

    // === Alignment Color
    AO: undefined, // Alignment Outer. if not set, the defaut is `colorDark`
    AI: undefined, // Alignment Inner. if not set, the defaut is `colorDark`

    // === Timing Pattern Color
    timing: undefined, // Global Timing color. if not set, the defaut is `colorDark`
    timing_H: undefined, // Horizontal timing color
    timing_V: undefined, // Vertical timing color

    // ==== Backgroud Image
    backgroundImage: undefined, // Background Image
    backgroundImageAlpha: 1, // Background image transparency, value between 0 and 1. default is 1.
    autoColor: false, // Automatic color adjustment(for data block)
    autoColorDark: 'rgba(0, 0, 0, .6)', // Automatic color: dark CSS color
    autoColorLight: 'rgba(255, 255, 255, .7)', // Automatic: color light CSS color

    // ==== Event Handler
    onRenderingStart: undefined,

    // ==== Images format
    format: 'PNG', // 'PNG', 'JPG'
    compressionLevel: 6, // ZLIB compression level (0-9). default is 6
    quality: 0.75, // An object specifying the quality (0 to 1). default is 0.75. (JPGs only)

    // ==== Versions
    version: 0, // The symbol versions of QR Code range from Version 1 to Version 40. default 0 means automatically choose the closest version based on the text length.

    // ==== binary(hex) data mode
    binary: false, // Whether it is binary mode, default is text mode.

    // UTF-8 without BOM
    utf8WithoutBOM: true,
  };
  if (typeof vOption === 'string') {
    vOption = {
      text: vOption,
    };
  }

  // Overwrites options
  if (vOption) {
    for (var i in vOption) {
      this._htOption[i] = vOption[i];
    }
  }

  if (!this._htOption.title && !this._htOption.subTitle) {
    this._htOption.titleHeight = 0;
  }
  if (this._htOption.version < 0 || this._htOption.version > 40) {
    console.warn("QR Code version '" + this._htOption.version + "' is invalidate, reset to 0");
    this._htOption.version = 0;
  }

  this._htOption.format = this._htOption.format.toUpperCase();
  if (this._htOption.format != 'PNG' && this._htOption.format != 'JPG') {
    console.warn("Image format '" + this._htOption.format + "' is invalidate, reset to 'PNG'");
    this._htOption.format = 'PNG';
  }
  if (
    this._htOption.format == 'PNG' &&
    (this._htOption.compressionLevel < 0 || this._htOption.compressionLevel > 9)
  ) {
    console.warn(
      this._htOption.compressionLevel +
        ' is invalidate, PNG compressionLevel must between 0 and 9, now reset to 6. '
    );
    this._htOption.compressionLevel = 1;
  } else if (this._htOption.quality < 0 || this._htOption.quality > 1) {
    console.warn(
      this._htOption.quality +
        ' is invalidate, JPG quality must between 0 and 1, now reset to 0.75. '
    );
    this._htOption.quality = 0.75;
  }

  if (this._htOption.dotScale < 0 || this._htOption.dotScale > 1) {
    console.warn(
      this._htOption.dotScale +
        ' , is invalidate, dotScale must greater than 0, less than or equal to 1, now reset to 1. '
    );
    this._htOption.dotScale = 1;
  }

  if (this._htOption.dotScaleTiming < 0 || this._htOption.dotScaleTiming > 1) {
    console.warn(
      this._htOption.dotScaleTiming +
        ' , is invalidate, dotScaleTiming must greater than 0, less than or equal to 1, now reset to 1. '
    );
    this._htOption.dotScaleTiming = 1;
  }
  if (this._htOption.dotScaleTiming_H) {
    if (this._htOption.dotScaleTiming_H < 0 || this._htOption.dotScaleTiming_H > 1) {
      console.warn(
        this._htOption.dotScaleTiming_H +
          ' , is invalidate, dotScaleTiming_H must greater than 0, less than or equal to 1, now reset to 1. '
      );
      this._htOption.dotScaleTiming_H = 1;
    }
  } else {
    this._htOption.dotScaleTiming_H = this._htOption.dotScaleTiming;
  }

  if (this._htOption.dotScaleTiming_V) {
    if (this._htOption.dotScaleTiming_V < 0 || this._htOption.dotScaleTiming_V > 1) {
      console.warn(
        this._htOption.dotScaleTiming_V +
          ' , is invalidate, dotScaleTiming_V must greater than 0, less than or equal to 1, now reset to 1. '
      );
      this._htOption.dotScaleTiming_V = 1;
    }
  } else {
    this._htOption.dotScaleTiming_V = this._htOption.dotScaleTiming;
  }

  if (this._htOption.dotScaleA < 0 || this._htOption.dotScaleA > 1) {
    console.warn(
      this._htOption.dotScaleA +
        ' , is invalidate, dotScaleA must greater than 0, less than or equal to 1, now reset to 1. '
    );
    this._htOption.dotScaleA = 1;
  }
  if (this._htOption.dotScaleAO) {
    if (this._htOption.dotScaleAO < 0 || this._htOption.dotScaleAO > 1) {
      console.warn(
        this._htOption.dotScaleAO +
          ' , is invalidate, dotScaleAO must greater than 0, less than or equal to 1, now reset to 1. '
      );
      this._htOption.dotScaleAO = 1;
    }
  } else {
    this._htOption.dotScaleAO = this._htOption.dotScaleA;
  }
  if (this._htOption.dotScaleAI) {
    if (this._htOption.dotScaleAI < 0 || this._htOption.dotScaleAI > 1) {
      console.warn(
        this._htOption.dotScaleAI +
          ' , is invalidate, dotScaleAI must greater than 0, less than or equal to 1, now reset to 1. '
      );
      this._htOption.dotScaleAI = 1;
    }
  } else {
    this._htOption.dotScaleAI = this._htOption.dotScaleA;
  }

  if (this._htOption.backgroundImageAlpha < 0 || this._htOption.backgroundImageAlpha > 1) {
    console.warn(
      this._htOption.backgroundImageAlpha +
        ' , is invalidate, backgroundImageAlpha must between 0 and 1, now reset to 1. '
    );
    this._htOption.backgroundImageAlpha = 1;
  }

  if (
    !this._htOption.drawer ||
    (this._htOption.drawer != 'svg' && this._htOption.drawer != 'canvas')
  ) {
    this._htOption.drawer = 'canvas';
  }

  this._htOption.height = this._htOption.height + this._htOption.titleHeight;

  this._oQRCode = null;
  this._oQRCode = new QRCodeModel(
    _getTypeNumber(this._htOption.text, this._htOption),
    this._htOption.correctLevel
  );
  this._oQRCode.addData(this._htOption.text, this._htOption.binary, this._htOption.utf8WithoutBOM);
  this._oQRCode.make();
}

// Save to image file or svg file
QRCode.prototype._toSave = function (saveOptions) {
  var _oDrawing = new Drawing(Object.assign({}, this._htOption));
  _oDrawing.makeOptions = saveOptions;

  try {
    var t = this;
    return new Promise((resolve, reject) => {
      _oDrawing.resolve = resolve;
      _oDrawing.reject = reject;
      _oDrawing.draw(t._oQRCode);
    });
  } catch (e) {
    console.error(e);
  }
};

/**
 * Support save PNG image file
 * @param {Object} path Make the QRCode
 */
QRCode.prototype.saveImage = function (saveOptions) {
  var defOptions = {
    makeType: 'FILE',
    path: null,
  };
  this._htOption._drawer = 'canvas';
  saveOptions = Object.assign(defOptions, saveOptions);
  return this._toSave(saveOptions);
};

/**
 * Save to SVG file
 */
QRCode.prototype.saveSVG = function (saveOptions) {
  var defOptions = {
    makeType: 'FILE',
    path: null,
  };
  this._htOption._drawer = 'svg';
  saveOptions = Object.assign(defOptions, saveOptions);
  return this._toSave(saveOptions);
};

// Get Base64, SVG text or Stream
QRCode.prototype._toData = function (drawer, makeType) {
  var defOptions = {
    makeType: makeType ? makeType : 'URL',
  };
  this._htOption._drawer = drawer;

  var _oDrawing = new Drawing(Object.assign({}, this._htOption));
  _oDrawing.makeOptions = defOptions;

  try {
    var t = this;
    return new Promise((resolve, reject) => {
      _oDrawing.resolve = resolve;
      _oDrawing.reject = reject;
      _oDrawing.draw(t._oQRCode);
    });
  } catch (e) {
    console.error(e);
  }
};

/**
 *Get standard base64 image data url text: 'data:image/png;base64, ...' or SVG data text
 */
QRCode.prototype.toDataURL = function () {
  return this._toData('canvas');
};
/**
 * Get SVG data text: '<svg xmlns:xlink="http://www.w3.org/1999/xlink" ...'
 */
QRCode.prototype.toSVGText = function () {
  return this._toData('svg');
};
/**
 * Get a stream from canvas back
 */
QRCode.prototype.toStream = function () {
  return this._toData('canvas', 'STREAM');
};

/**
 * @name QRCode.CorrectLevel
 */
QRCode.CorrectLevel = QRErrorCorrectLevel;

module.exports = QRCode;