text: (function (global, factory) {
      typeof exports === "object" && typeof module !== "undefined" ? module.exports = factory() : typeof define === "function" && define.amd ? define(factory) : (global.drawQrcode = factory())
  }(this, (function () {
      var hasOwn = Object.prototype.hasOwnProperty;
      var toStr = Object.prototype.toString;
      var defineProperty = Object.defineProperty;
      var gOPD = Object.getOwnPropertyDescriptor;
      var isArray = function isArray(arr) {
          if (typeof Array.isArray === "function") {
              return Array.isArray(arr)
          }
          return toStr.call(arr) === "[object Array]"
      };
      var isPlainObject = function isPlainObject(obj) {
          if (!obj || toStr.call(obj) !== "[object Object]") {
              return false
          }
          var hasOwnConstructor = hasOwn.call(obj, "constructor");
          var hasIsPrototypeOf = obj.constructor && obj.constructor.prototype && hasOwn.call(obj.constructor.prototype, "isPrototypeOf");
          if (obj.constructor && !hasOwnConstructor && !hasIsPrototypeOf) {
              return false
          }
          var key;
          for (key in obj) {
          }
          return typeof key === "undefined" || hasOwn.call(obj, key)
      };
      var setProperty = function setProperty(target, options) {
          if (defineProperty && options.name === "__proto__") {
              defineProperty(target, options.name, {
                  enumerable: true,
                  configurable: true,
                  value: options.newValue,
                  writable: true
              })
          } else {
              target[options.name] = options.newValue
          }
      };
      var getProperty = function getProperty(obj, name) {
          if (name === "__proto__") {
              if (!hasOwn.call(obj, name)) {
                  return void 0
              } else {
                  if (gOPD) {
                      return gOPD(obj, name).value
                  }
              }
          }
          return obj[name]
      };
      var extend = function extend() {
          var options, name, src, copy, copyIsArray, clone;
          var target = arguments[0];
          var i = 1;
          var length = arguments.length;
          var deep = false;
          if (typeof target === "boolean") {
              deep = target;
              target = arguments[1] || {};
              i = 2
          }
          if (target == null || (typeof target !== "object" && typeof target !== "function")) {
              target = {}
          }
          for (; i < length; ++i) {
              options = arguments[i];
              if (options != null) {
                  for (name in options) {
                      src = getProperty(target, name);
                      copy = getProperty(options, name);
                      if (target !== copy) {
                          if (deep && copy && (isPlainObject(copy) || (copyIsArray = isArray(copy)))) {
                              if (copyIsArray) {
                                  copyIsArray = false;
                                  clone = src && isArray(src) ? src : []
                              } else {
                                  clone = src && isPlainObject(src) ? src : {}
                              }
                              setProperty(target, {name: name, newValue: extend(deep, clone, copy)})
                          } else {
                              if (typeof copy !== "undefined") {
                                  setProperty(target, {name: name, newValue: copy})
                              }
                          }
                      }
                  }
              }
          }
          return target
      };
  
      function QR8bitByte(data) {
          this.mode = QRMode.MODE_8BIT_BYTE;
          this.data = data
      }
  
      QR8bitByte.prototype = {
          getLength: function (buffer) {
              return this.data.length
          }, write: function (buffer) {
              for (var i = 0; i < this.data.length; i++) {
                  buffer.put(this.data.charCodeAt(i), 8)
              }
          }
      };
  
      function QRCode(typeNumber, errorCorrectLevel) {
          this.typeNumber = typeNumber;
          this.errorCorrectLevel = errorCorrectLevel;
          this.modules = null;
          this.moduleCount = 0;
          this.dataCache = null;
          this.dataList = new Array()
      }
  
      QRCode.prototype = {
          addData: function (data) {
              var newData = new QR8bitByte(data);
              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]
          }, getModuleCount: function () {
              return this.moduleCount
          }, make: function () {
              if (this.typeNumber < 1) {
                  var typeNumber = 1;
                  for (typeNumber = 1; typeNumber < 40; typeNumber++) {
                      var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, this.errorCorrectLevel);
                      var buffer = new QRBitBuffer();
                      var totalDataCount = 0;
                      for (var i = 0; i < rsBlocks.length; i++) {
                          totalDataCount += rsBlocks[i].dataCount
                      }
                      for (var i = 0; i < this.dataList.length; i++) {
                          var data = this.dataList[i];
                          buffer.put(data.mode, 4);
                          buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber));
                          data.write(buffer)
                      }
                      if (buffer.getLengthInBits() <= totalDataCount * 8) {
                          break
                      }
                  }
                  this.typeNumber = typeNumber
              }
              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] = null
                  }
              }
              this.setupPositionProbePattern(0, 0);
              this.setupPositionProbePattern(this.moduleCount - 7, 0);
              this.setupPositionProbePattern(0, this.moduleCount - 7);
              this.setupPositionAdjustPattern();
              this.setupTimingPattern();
              this.setupTypeInfo(test, maskPattern);
              if (this.typeNumber >= 7) {
                  this.setupTypeNumber(test)
              }
              if (this.dataCache == null) {
                  this.dataCache = QRCode.createData(this.typeNumber, this.errorCorrectLevel, this.dataList)
              }
              this.mapData(this.dataCache, maskPattern)
          }, setupPositionProbePattern: function (row, col) {
              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] = true
                      } else {
                          this.modules[row + r][col + c] = 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];
                      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] != null) {
                      continue
                  }
                  this.modules[r][6] = r % 2 == 0
              }
              for (var c = 8; c < this.moduleCount - 8; c++) {
                  if (this.modules[6][c] != null) {
                      continue
                  }
                  this.modules[6][c] = c % 2 == 0
              }
          }, setupPositionAdjustPattern: function () {
              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] != 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] = true
                              } else {
                                  this.modules[row + r][col + c] = 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] = 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)] = 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] = mod
                  } else {
                      if (i < 8) {
                          this.modules[i + 1][8] = mod
                      } else {
                          this.modules[this.moduleCount - 15 + i][8] = 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] = mod
                  } else {
                      if (i < 9) {
                          this.modules[8][15 - i - 1 + 1] = mod
                      } else {
                          this.modules[8][15 - i - 1] = mod
                      }
                  }
              }
              this.modules[this.moduleCount - 8][8] = !test
          }, mapData: 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] == 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] = dark;
                              bitIndex--;
                              if (bitIndex == -1) {
                                  byteIndex++;
                                  bitIndex = 7
                              }
                          }
                      }
                      row += inc;
                      if (row < 0 || this.moduleCount <= row) {
                          row -= inc;
                          inc = -inc;
                          break
                      }
                  }
              }
          }
      };
      QRCode.PAD0 = 236;
      QRCode.PAD1 = 17;
      QRCode.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(QRCode.PAD0, 8);
              if (buffer.getLengthInBits() >= totalDataCount * 8) {
                  break
              }
              buffer.put(QRCode.PAD1, 8)
          }
          return QRCode.createBytes(buffer, rsBlocks)
      };
      QRCode.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] = 255 & 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], [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 = new Array();
          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 = new Array();
          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] |= 128 >>> this.length % 8
              }
              this.length++
          }
      };
  
      function utf16to8(str) {
          var out, i, len, c;
          out = "";
          len = str.length;
          for (i = 0; i < len; i++) {
              c = str.charCodeAt(i);
              if (c >= 1 && c <= 127) {
                  out += str.charAt(i)
              } else {
                  if (c > 2047) {
                      out += String.fromCharCode(224 | c >> 12 & 15);
                      out += String.fromCharCode(128 | c >> 6 & 63);
                      out += String.fromCharCode(128 | c >> 0 & 63)
                  } else {
                      out += String.fromCharCode(192 | c >> 6 & 31);
                      out += String.fromCharCode(128 | c >> 0 & 63)
                  }
              }
          }
          return out
      }
  
      function drawQrcode(options) {
          options = options || {};
          options = extend(true, {
              width: 256,
              height: 256,
              x: 0,
              y: 0,
              typeNumber: -1,
              correctLevel: QRErrorCorrectLevel.H,
              background: "#ffffff",
              foreground: "#000000",
              image: {imageResource: "", dx: 0, dy: 0, dWidth: 100, dHeight: 100}
          }, options);
          if (!options.canvasId && !options.ctx) {
              console.warn("please set canvasId or ctx!");
              return
          }
          createCanvas();
  
          function createCanvas() {
              var qrcode = new QRCode(options.typeNumber, options.correctLevel);
              qrcode.addData(utf16to8(options.text));
              qrcode.make();
              var ctx;
              if (options.ctx) {
                  ctx = options.ctx
              } else {
                  ctx = options._this ? wx.createCanvasContext && wx.createCanvasContext(options.canvasId, options._this) : wx.createCanvasContext && wx.createCanvasContext(options.canvasId)
              }
              var tileW = options.width / qrcode.getModuleCount();
              var tileH = options.height / qrcode.getModuleCount();
              for (var row = 0; row < qrcode.getModuleCount(); row++) {
                  for (var col = 0; col < qrcode.getModuleCount(); col++) {
                      var style = qrcode.isDark(row, col) ? options.foreground : options.background;
                      ctx.setFillStyle(style);
                      var w = Math.ceil((col + 1) * tileW) - Math.floor(col * tileW);
                      var h = Math.ceil((row + 1) * tileW) - Math.floor(row * tileW);
                      ctx.fillRect(Math.round(col * tileW) + options.x, Math.round(row * tileH) + options.y, w, h)
                  }
              }
              if (options.image.imageResource) {
                  ctx.drawImage(options.image.imageResource, options.image.dx, options.image.dy, options.image.dWidth, options.image.dHeight)
              }
              ctx.draw(false, function (e) {
                  options.callback && options.callback(e)
              })
          }
      }
  
      return drawQrcode
  })));
  