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| 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) {
| // 由于官方还没有统一此接口的输出字段，所以先判定下 支付宝为 res.apFilePath
| if (!empty(res.tempFilePath)) {
| options.cbResult(res.tempFilePath)
| } else if (!empty(res.apFilePath)) {
| options.cbResult(res.apFilePath)
| } else {
| options.cbResult(res.tempFilePath)
| }
| }
| },
| fail: function(res) {
| if (options.cbResult) {
| options.cbResult(res)
| }
| },
| complete: function() {
| 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
|
|
