// +---------------------------------------------------------------------- // | CRMEB [ CRMEB赋能开发者，助力企业发展 ] // +---------------------------------------------------------------------- // | Copyright (c) 2016~2021 https://www.crmeb.com All rights reserved. // +---------------------------------------------------------------------- // | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权 // +---------------------------------------------------------------------- // | Author: CRMEB Team // +---------------------------------------------------------------------- let QRCode = {}; (function () { /** * 获取单个字符的utf8编码 * unicode BMP平面约65535个字符 * @param {num} code * return {array} */ function unicodeFormat8(code) { // 1 byte var c0, c1, c2; if (code < 128) { return [code]; // 2 bytes } else if (code < 2048) { c0 = 192 + (code >> 6); c1 = 128 + (code & 63); return [c0, c1]; // 3 bytes } else { c0 = 224 + (code >> 12); c1 = 128 + (code >> 6 & 63); c2 = 128 + (code & 63); return [c0, c1, c2]; } } /** * 获取字符串的utf8编码字节串 * @param {string} string * @return {array} */ function getUTF8Bytes(string) { var utf8codes = []; for (var i = 0; i < string.length; i++) { var code = string.charCodeAt(i); var utf8 = unicodeFormat8(code); for (var j = 0; j < utf8.length; j++) { utf8codes.push(utf8[j]); } } return utf8codes; } /** * 二维码算法实现 * @param {string} data 要编码的信息字符串 * @param {num} errorCorrectLevel 纠错等级 */ function QRCodeAlg(data, errorCorrectLevel) { this.typeNumber = -1; //版本 this.errorCorrectLevel = errorCorrectLevel; this.modules = null; //二维矩阵，存放最终结果 this.moduleCount = 0; //矩阵大小 this.dataCache = null; //数据缓存 this.rsBlocks = null; //版本数据信息 this.totalDataCount = -1; //可使用的数据量 this.data = data; this.utf8bytes = getUTF8Bytes(data); this.make(); } QRCodeAlg.prototype = { constructor: QRCodeAlg, /** * 获取二维码矩阵大小 * @return {num} 矩阵大小 */ getModuleCount: function () { return this.moduleCount; }, /** * 编码 */ make: function () { this.getRightType(); this.dataCache = this.createData(); this.createQrcode(); }, /** * 设置二位矩阵功能图形 * @param {bool} test 表示是否在寻找最好掩膜阶段 * @param {num} maskPattern 掩膜的版本 */ makeImpl: function (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); } this.setupPositionProbePattern(0, 0); this.setupPositionProbePattern(this.moduleCount - 7, 0); this.setupPositionProbePattern(0, this.moduleCount - 7); this.setupPositionAdjustPattern(); this.setupTimingPattern(); this.setupTypeInfo(true, maskPattern); if (this.typeNumber >= 7) { this.setupTypeNumber(true); } this.mapData(this.dataCache, maskPattern); }, /** * 设置二维码的位置探测图形 * @param {num} row 探测图形的中心横坐标 * @param {num} col 探测图形的中心纵坐标 */ 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; } } } }, /** * 创建二维码 * @return {[type]} [description] */ createQrcode: function () { var minLostPoint = 0; var pattern = 0; var bestModules = null; for (var i = 0; i < 8; i++) { this.makeImpl(i); var lostPoint = QRUtil.getLostPoint(this); if (i == 0 || minLostPoint > lostPoint) { minLostPoint = lostPoint; pattern = i; bestModules = this.modules; } } this.modules = bestModules; this.setupTypeInfo(false, pattern); if (this.typeNumber >= 7) { this.setupTypeNumber(false); } }, /** * 设置定位图形 * @return {[type]} [description] */ 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); if (this.modules[6][r] != null) { continue; } this.modules[6][r] = (r % 2 == 0); } }, /** * 设置矫正图形 * @return {[type]} [description] */ 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; } } } } } }, /** * 设置版本信息（7以上版本才有） * @param {bool} test 是否处于判断最佳掩膜阶段 * @return {[type]} [description] */ 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; this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod; } }, /** * 设置格式信息（纠错等级和掩膜版本） * @param {bool} test * @param {num} maskPattern 掩膜版本 * @return {} */ setupTypeInfo: function (test, maskPattern) { var data = (QRErrorCorrectLevel[this.errorCorrectLevel] << 3) | maskPattern; var bits = QRUtil.getBCHTypeInfo(data); // vertical 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; } // horizontal 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; } } // fixed module this.modules[this.moduleCount - 8][8] = (!test); }, /** * 数据编码 * @return {[type]} [description] */ createData: function () { var buffer = new QRBitBuffer(); var lengthBits = this.typeNumber > 9 ? 16 : 8; buffer.put(4, 4); //添加模式 buffer.put(this.utf8bytes.length, lengthBits); for (var i = 0, l = this.utf8bytes.length; i < l; i++) { buffer.put(this.utf8bytes[i], 8); } if (buffer.length + 4 <= this.totalDataCount * 8) { buffer.put(0, 4); } // padding while (buffer.length % 8 != 0) { buffer.putBit(false); } // padding while (true) { if (buffer.length >= this.totalDataCount * 8) { break; } buffer.put(QRCodeAlg.PAD0, 8); if (buffer.length >= this.totalDataCount * 8) { break; } buffer.put(QRCodeAlg.PAD1, 8); } return this.createBytes(buffer); }, /** * 纠错码编码 * @param {buffer} buffer 数据编码 * @return {[type]} */ createBytes: function (buffer) { var offset = 0; var maxDcCount = 0; var maxEcCount = 0; var length = this.rsBlock.length / 3; var rsBlocks = new Array(); for (var i = 0; i < length; i++) { var count = this.rsBlock[i * 3 + 0]; var totalCount = this.rsBlock[i * 3 + 1]; var dataCount = this.rsBlock[i * 3 + 2]; for (var j = 0; j < count; j++) { rsBlocks.push([dataCount, totalCount]); } } var dcdata = new Array(rsBlocks.length); var ecdata = new Array(rsBlocks.length); for (var r = 0; r < rsBlocks.length; r++) { var dcCount = rsBlocks[r][0]; var ecCount = rsBlocks[r][1] - 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 data = new Array(this.totalDataCount); 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; }, /** * 布置模块，构建最终信息 * @param {} data * @param {} maskPattern * @return {} */ 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; } } } } }; /** * 填充字段 */ QRCodeAlg.PAD0 = 0xEC; QRCodeAlg.PAD1 = 0x11; //--------------------------------------------------------------------- // 纠错等级对应的编码 //--------------------------------------------------------------------- var QRErrorCorrectLevel = [1, 0, 3, 2]; //--------------------------------------------------------------------- // 掩膜版本 //--------------------------------------------------------------------- var QRMaskPattern = { PATTERN000: 0, PATTERN001: 1, PATTERN010: 2, PATTERN011: 3, PATTERN100: 4, PATTERN101: 5, PATTERN110: 6, PATTERN111: 7 }; //--------------------------------------------------------------------- // 工具类 //--------------------------------------------------------------------- var QRUtil = { /* 每个版本矫正图形的位置 */ 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), /* BCH编码格式信息 */ 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; }, /* BCH编码版本信息 */ 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; }, /* 获取BCH位信息 */ getBCHDigit: function (data) { var digit = 0; while (data != 0) { digit++; data >>>= 1; } return digit; }, /* 获取版本对应的矫正图形位置 */ getPatternPosition: function (typeNumber) { return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1]; }, /* 掩膜算法 */ 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); } }, /* 获取RS的纠错多项式 */ 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; }, /* 获取评价 */ getLostPoint: function (qrCode) { var moduleCount = qrCode.getModuleCount(), lostPoint = 0, darkCount = 0; for (var row = 0; row < moduleCount; row++) { var sameCount = 0; var head = qrCode.modules[row][0]; for (var col = 0; col < moduleCount; col++) { var current = qrCode.modules[row][col]; //level 3 评价 if (col < moduleCount - 6) { if (current && !qrCode.modules[row][col + 1] && qrCode.modules[row][col + 2] && qrCode.modules[row][col + 3] && qrCode.modules[row][col + 4] && !qrCode.modules[row][col + 5] && qrCode.modules[row][col + 6]) { if (col < moduleCount - 10) { if (qrCode.modules[row][col + 7] && qrCode.modules[row][col + 8] && qrCode.modules[row][col + 9] && qrCode.modules[row][col + 10]) { lostPoint += 40; } } else if (col > 3) { if (qrCode.modules[row][col - 1] && qrCode.modules[row][col - 2] && qrCode.modules[row][col - 3] && qrCode.modules[row][col - 4]) { lostPoint += 40; } } } } //level 2 评价 if ((row < moduleCount - 1) && (col < moduleCount - 1)) { var count = 0; if (current) count++; if (qrCode.modules[row + 1][col]) count++; if (qrCode.modules[row][col + 1]) count++; if (qrCode.modules[row + 1][col + 1]) count++; if (count == 0 || count == 4) { lostPoint += 3; } } //level 1 评价 if (head ^ current) { sameCount++; } else { head = current; if (sameCount >= 5) { lostPoint += (3 + sameCount - 5); } sameCount = 1; } //level 4 评价 if (current) { darkCount++; } } } for (var col = 0; col < moduleCount; col++) { var sameCount = 0; var head = qrCode.modules[0][col]; for (var row = 0; row < moduleCount; row++) { var current = qrCode.modules[row][col]; //level 3 评价 if (row < moduleCount - 6) { if (current && !qrCode.modules[row + 1][col] && qrCode.modules[row + 2][col] && qrCode.modules[row + 3][col] && qrCode.modules[row + 4][col] && !qrCode.modules[row + 5][col] && qrCode.modules[row + 6][col]) { if (row < moduleCount - 10) { if (qrCode.modules[row + 7][col] && qrCode.modules[row + 8][col] && qrCode.modules[row + 9][col] && qrCode.modules[row + 10][col]) { lostPoint += 40; } } else if (row > 3) { if (qrCode.modules[row - 1][col] && qrCode.modules[row - 2][col] && qrCode.modules[row - 3][col] && qrCode.modules[row - 4][col]) { lostPoint += 40; } } } } //level 1 评价 if (head ^ current) { sameCount++; } else { head = current; if (sameCount >= 5) { lostPoint += (3 + sameCount - 5); } sameCount = 1; } } } // LEVEL4 var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5; lostPoint += ratio * 10; return lostPoint; } }; //--------------------------------------------------------------------- // QRMath使用的数学工具 //--------------------------------------------------------------------- var QRMath = { /* 将n转化为a^m */ glog: function (n) { if (n < 1) { throw new Error("glog(" + n + ")"); } return QRMath.LOG_TABLE[n]; }, /* 将a^m转化为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; } //--------------------------------------------------------------------- // QRPolynomial 多项式 //--------------------------------------------------------------------- /** * 多项式类 * @param {Array} num 系数 * @param {num} shift a^shift */ 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; }, /** * 多项式乘法 * @param {QRPolynomial} e 被乘多项式 * @return {[type]} [description] */ 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); }, /** * 多项式模运算 * @param {QRPolynomial} e 模多项式 * @return {} */ mod: function (e) { var tl = this.getLength(), el = e.getLength(); if (tl - el < 0) { return this; } var num = new Array(tl); for (var i = 0; i < tl; i++) { num[i] = this.get(i); } while (num.length >= el) { var ratio = QRMath.glog(num[0]) - QRMath.glog(e.get(0)); for (var i = 0; i < e.getLength(); i++) { num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio); } while (num[0] == 0) { num.shift(); } } return new QRPolynomial(num, 0); } }; //--------------------------------------------------------------------- // RS_BLOCK_TABLE //--------------------------------------------------------------------- /* 二维码各个版本信息[块数, 每块中的数据块数, 每块中的信息块数] */ var RS_BLOCK_TABLE = [ // L // M // Q // H // 1 [1, 26, 19], [1, 26, 16], [1, 26, 13], [1, 26, 9], // 2 [1, 44, 34], [1, 44, 28], [1, 44, 22], [1, 44, 16], // 3 [1, 70, 55], [1, 70, 44], [2, 35, 17], [2, 35, 13], // 4 [1, 100, 80], [2, 50, 32], [2, 50, 24], [4, 25, 9], // 5 [1, 134, 108], [2, 67, 43], [2, 33, 15, 2, 34, 16], [2, 33, 11, 2, 34, 12], // 6 [2, 86, 68], [4, 43, 27], [4, 43, 19], [4, 43, 15], // 7 [2, 98, 78], [4, 49, 31], [2, 32, 14, 4, 33, 15], [4, 39, 13, 1, 40, 14], // 8 [2, 121, 97], [2, 60, 38, 2, 61, 39], [4, 40, 18, 2, 41, 19], [4, 40, 14, 2, 41, 15], // 9 [2, 146, 116], [3, 58, 36, 2, 59, 37], [4, 36, 16, 4, 37, 17], [4, 36, 12, 4, 37, 13], // 10 [2, 86, 68, 2, 87, 69], [4, 69, 43, 1, 70, 44], [6, 43, 19, 2, 44, 20], [6, 43, 15, 2, 44, 16], // 11 [4, 101, 81], [1, 80, 50, 4, 81, 51], [4, 50, 22, 4, 51, 23], [3, 36, 12, 8, 37, 13], // 12 [2, 116, 92, 2, 117, 93], [6, 58, 36, 2, 59, 37], [4, 46, 20, 6, 47, 21], [7, 42, 14, 4, 43, 15], // 13 [4, 133, 107], [8, 59, 37, 1, 60, 38], [8, 44, 20, 4, 45, 21], [12, 33, 11, 4, 34, 12], // 14 [3, 145, 115, 1, 146, 116], [4, 64, 40, 5, 65, 41], [11, 36, 16, 5, 37, 17], [11, 36, 12, 5, 37, 13], // 15 [5, 109, 87, 1, 110, 88], [5, 65, 41, 5, 66, 42], [5, 54, 24, 7, 55, 25], [11, 36, 12], // 16 [5, 122, 98, 1, 123, 99], [7, 73, 45, 3, 74, 46], [15, 43, 19, 2, 44, 20], [3, 45, 15, 13, 46, 16], // 17 [1, 135, 107, 5, 136, 108], [10, 74, 46, 1, 75, 47], [1, 50, 22, 15, 51, 23], [2, 42, 14, 17, 43, 15], // 18 [5, 150, 120, 1, 151, 121], [9, 69, 43, 4, 70, 44], [17, 50, 22, 1, 51, 23], [2, 42, 14, 19, 43, 15], // 19 [3, 141, 113, 4, 142, 114], [3, 70, 44, 11, 71, 45], [17, 47, 21, 4, 48, 22], [9, 39, 13, 16, 40, 14], // 20 [3, 135, 107, 5, 136, 108], [3, 67, 41, 13, 68, 42], [15, 54, 24, 5, 55, 25], [15, 43, 15, 10, 44, 16], // 21 [4, 144, 116, 4, 145, 117], [17, 68, 42], [17, 50, 22, 6, 51, 23], [19, 46, 16, 6, 47, 17], // 22 [2, 139, 111, 7, 140, 112], [17, 74, 46], [7, 54, 24, 16, 55, 25], [34, 37, 13], // 23 [4, 151, 121, 5, 152, 122], [4, 75, 47, 14, 76, 48], [11, 54, 24, 14, 55, 25], [16, 45, 15, 14, 46, 16], // 24 [6, 147, 117, 4, 148, 118], [6, 73, 45, 14, 74, 46], [11, 54, 24, 16, 55, 25], [30, 46, 16, 2, 47, 17], // 25 [8, 132, 106, 4, 133, 107], [8, 75, 47, 13, 76, 48], [7, 54, 24, 22, 55, 25], [22, 45, 15, 13, 46, 16], // 26 [10, 142, 114, 2, 143, 115], [19, 74, 46, 4, 75, 47], [28, 50, 22, 6, 51, 23], [33, 46, 16, 4, 47, 17], // 27 [8, 152, 122, 4, 153, 123], [22, 73, 45, 3, 74, 46], [8, 53, 23, 26, 54, 24], [12, 45, 15, 28, 46, 16], // 28 [3, 147, 117, 10, 148, 118], [3, 73, 45, 23, 74, 46], [4, 54, 24, 31, 55, 25], [11, 45, 15, 31, 46, 16], // 29 [7, 146, 116, 7, 147, 117], [21, 73, 45, 7, 74, 46], [1, 53, 23, 37, 54, 24], [19, 45, 15, 26, 46, 16], // 30 [5, 145, 115, 10, 146, 116], [19, 75, 47, 10, 76, 48], [15, 54, 24, 25, 55, 25], [23, 45, 15, 25, 46, 16], // 31 [13, 145, 115, 3, 146, 116], [2, 74, 46, 29, 75, 47], [42, 54, 24, 1, 55, 25], [23, 45, 15, 28, 46, 16], // 32 [17, 145, 115], [10, 74, 46, 23, 75, 47], [10, 54, 24, 35, 55, 25], [19, 45, 15, 35, 46, 16], // 33 [17, 145, 115, 1, 146, 116], [14, 74, 46, 21, 75, 47], [29, 54, 24, 19, 55, 25], [11, 45, 15, 46, 46, 16], // 34 [13, 145, 115, 6, 146, 116], [14, 74, 46, 23, 75, 47], [44, 54, 24, 7, 55, 25], [59, 46, 16, 1, 47, 17], // 35 [12, 151, 121, 7, 152, 122], [12, 75, 47, 26, 76, 48], [39, 54, 24, 14, 55, 25], [22, 45, 15, 41, 46, 16], // 36 [6, 151, 121, 14, 152, 122], [6, 75, 47, 34, 76, 48], [46, 54, 24, 10, 55, 25], [2, 45, 15, 64, 46, 16], // 37 [17, 152, 122, 4, 153, 123], [29, 74, 46, 14, 75, 47], [49, 54, 24, 10, 55, 25], [24, 45, 15, 46, 46, 16], // 38 [4, 152, 122, 18, 153, 123], [13, 74, 46, 32, 75, 47], [48, 54, 24, 14, 55, 25], [42, 45, 15, 32, 46, 16], // 39 [20, 147, 117, 4, 148, 118], [40, 75, 47, 7, 76, 48], [43, 54, 24, 22, 55, 25], [10, 45, 15, 67, 46, 16], // 40 [19, 148, 118, 6, 149, 119], [18, 75, 47, 31, 76, 48], [34, 54, 24, 34, 55, 25], [20, 45, 15, 61, 46, 16] ]; /** * 根据数据获取对应版本 * @return {[type]} [description] */ QRCodeAlg.prototype.getRightType = function () { for (var typeNumber = 1; typeNumber < 41; typeNumber++) { var rsBlock = RS_BLOCK_TABLE[(typeNumber - 1) * 4 + this.errorCorrectLevel]; if (rsBlock == undefined) { throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + this.errorCorrectLevel); } var length = rsBlock.length / 3; var totalDataCount = 0; for (var i = 0; i < length; i++) { var count = rsBlock[i * 3 + 0]; var dataCount = rsBlock[i * 3 + 2]; totalDataCount += dataCount * count; } var lengthBytes = typeNumber > 9 ? 2 : 1; if (this.utf8bytes.length + lengthBytes < totalDataCount || typeNumber == 40) { this.typeNumber = typeNumber; this.rsBlock = rsBlock; this.totalDataCount = totalDataCount; break; } } }; //--------------------------------------------------------------------- // QRBitBuffer //--------------------------------------------------------------------- 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); }, put: function (num, length) { for (var i = 0; i < length; i++) { this.putBit(((num >>> (length - i - 1)) & 1)); } }, 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++; } }; // xzedit let qrcodeAlgObjCache = []; /** * 二维码构造函数，主要用于绘制 * @param {参数列表} opt 传递参数 * @return {} */ QRCode = function (opt) { //设置默认参数 this.options = { text: '', size: 256, correctLevel: 3, background: '#ffffff', foreground: '#000000', pdground: '#000000', image: '', imageSize: 30, canvasId: opt.canvasId, context: opt.context, usingComponents: opt.usingComponents, showLoading: opt.showLoading, loadingText: opt.loadingText, }; if (typeof opt === 'string') { // 只编码ASCII字符串 opt = { text: opt }; } if (opt) { for (var i in opt) { this.options[i] = opt[i]; } } //使用QRCodeAlg创建二维码结构 var qrCodeAlg = null; for (var i = 0, l = qrcodeAlgObjCache.length; i < l; i++) { if (qrcodeAlgObjCache[i].text == this.options.text && qrcodeAlgObjCache[i].text.correctLevel == this.options.correctLevel) { qrCodeAlg = qrcodeAlgObjCache[i].obj; break; } } if (i == l) { qrCodeAlg = new QRCodeAlg(this.options.text, this.options.correctLevel); qrcodeAlgObjCache.push({ text: this.options.text, correctLevel: this.options.correctLevel, obj: qrCodeAlg }); } /** * 计算矩阵点的前景色 * @param {Obj} config * @param {Number} config.row 点x坐标 * @param {Number} config.col 点y坐标 * @param {Number} config.count 矩阵大小 * @param {Number} config.options 组件的options * @return {String} */ let getForeGround = function (config) { var options = config.options; if (options.pdground && ( (config.row > 1 && config.row < 5 && config.col > 1 && config.col < 5) || (config.row > (config.count - 6) && config.row < (config.count - 2) && config.col > 1 && config.col < 5) || (config.row > 1 && config.row < 5 && config.col > (config.count - 6) && config.col < (config.count - 2)) )) { return options.pdground; } return options.foreground; } // 创建canvas let createCanvas = function (options) { if (options.showLoading) { uni.showLoading({ title: options.loadingText, mask: true }); } var ctx = uni.createCanvasContext(options.canvasId, options.context); var count = qrCodeAlg.getModuleCount(); var ratioSize = options.size; var ratioImgSize = options.imageSize; //计算每个点的长宽 var tileW = (ratioSize / count).toPrecision(4); var tileH = (ratioSize / count).toPrecision(4); //绘制 for (var row = 0; row < count; row++) { for (var col = 0; col < count; col++) { var w = (Math.ceil((col + 1) * tileW) - Math.floor(col * tileW)); var h = (Math.ceil((row + 1) * tileW) - Math.floor(row * tileW)); var foreground = getForeGround({ row: row, col: col, count: count, options: options }); ctx.setFillStyle(qrCodeAlg.modules[row][col] ? foreground : options.background); ctx.fillRect(Math.round(col * tileW), Math.round(row * tileH), w, h); } } if (options.image) { var x = Number(((ratioSize - ratioImgSize) / 2).toFixed(2)); var y = Number(((ratioSize - ratioImgSize) / 2).toFixed(2)); drawRoundedRect(ctx, x, y, ratioImgSize, ratioImgSize, 2, 6, true, true) ctx.drawImage(options.image, x, y, ratioImgSize, ratioImgSize); // 画圆角矩形 function drawRoundedRect(ctxi, x, y, width, height, r, lineWidth, fill, stroke) { ctxi.setLineWidth(lineWidth); ctxi.setFillStyle(options.background); ctxi.setStrokeStyle(options.background); ctxi.beginPath(); // draw top and top right corner ctxi.moveTo(x + r, y); ctxi.arcTo(x + width, y, x + width, y + r, r); // draw right side and bottom right corner ctxi.arcTo(x + width, y + height, x + width - r, y + height, r); // draw bottom and bottom left corner ctxi.arcTo(x, y + height, x, y + height - r, r); // draw left and top left corner ctxi.arcTo(x, y, x + r, y, r); ctxi.closePath(); if (fill) { ctxi.fill(); } if (stroke) { ctxi.stroke(); } } } setTimeout(() => { ctx.draw(true, () => { // 保存到临时区域 setTimeout(() => { uni.canvasToTempFilePath({ width: options.width, height: options.height, destWidth: options.width, destHeight: options.height, canvasId: options.canvasId, quality: Number(1), success: function (res) { if (options.cbResult) { options.cbResult(res.tempFilePath) } }, fail: function (res) { if (options.cbResult) { options.cbResult(res) } }, complete: function () { if (options.showLoading){ uni.hideLoading(); } }, }, options.context); }, options.text.length + 100); }); }, options.usingComponents ? 0 : 150); } createCanvas(this.options); // 空判定 let empty = function (v) { let tp = typeof v, rt = false; if (tp == "number" && String(v) == "") { rt = true } else if (tp == "undefined") { rt = true } else if (tp == "object") { if (JSON.stringify(v) == "{}" || JSON.stringify(v) == "[]" || v == null) rt = true } else if (tp == "string") { if (v == "" || v == "undefined" || v == "null" || v == "{}" || v == "[]") rt = true } else if (tp == "function") { rt = false } return rt } }; QRCode.prototype.clear = function (fn) { var ctx = uni.createCanvasContext(this.options.canvasId, this.options.context) ctx.clearRect(0, 0, this.options.size, this.options.size) ctx.draw(false, () => { if (fn) { fn() } }) }; })() export default QRCode