|
|
@@ -0,0 +1,1201 @@
|
|
|
+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
|
