建站是什么东西,我的个人网页图片,爱奇艺网站建设费,经营范围网站建设市面上提供了各种各样的二维码组件#xff0c;做了一简单的uniapp二维码组件#xff0c;二维码实现依赖davidshimjs/qrcodejs。
组件特点
跨浏览器支持#xff1a;利用Canvas元素实现二维码的跨浏览器兼容性#xff0c;兼容微信小程序、h5、app。 无依赖性#xff1a;QR…市面上提供了各种各样的二维码组件做了一简单的uniapp二维码组件二维码实现依赖davidshimjs/qrcodejs。
组件特点
跨浏览器支持利用Canvas元素实现二维码的跨浏览器兼容性兼容微信小程序、h5、app。 无依赖性QRCode.js完全独立工作不需要依赖其他外部JavaScript库确保了其轻量级和易集成的特点。 高度可配置提供了丰富的配置选项如设置二维码的尺寸、颜色暗色和亮色区域、纠错级别等让开发者可以根据实际需求进行灵活配置。 动态更改通过API方法可以在运行时清除或重新生成二维码内容满足动态变化的需求。 组件库实现
template view classqrcode :style{width:width px, height:width px} canvas :style{width:width px, height:width px, background:bgc} :canvas-idelid/canvas /view /template
script import qrCode from ./weapp-qrcode.js export default { data() { return { elid: this.$u.guid(), bgc: rgba(200, 200, 200, 0.1), //测试画布是否与内容相同大小 canvasQrPath: this.qrPath, // level: } }, props: { text: { type: String, default: hello }, width: { type: Number, default: 200 }, quality: { type: String, default: L //二维码质量L/M/Q/H }, colorDark: { type: String, default: #000000 }, colorLight: { type: String, default: #ffffff }, qrPath: { type: String, default: } }, // 在实例挂载完成后被立即调用 mounted() { //兼容非动态取值(二维码为固定内容) this.couponQrCode() }, watch: { text(newVal, oldVal) { //监测到text值发生改变时重新绘制 console.log(最新值是 newVal, 原来的值是 oldVal); this.couponQrCode() } }, methods: { // 二维码生成工具 couponQrCode() { var that this; if (this.quality L) { this.level qrCode.CorrectLevel.L } else if (this.quality M) { this.level qrCode.CorrectLevel.M } else if (this.quality Q) { this.level qrCode.CorrectLevel.Q } else if (this.quality H) { this.level qrCode.CorrectLevel.H } else { this.level qrCode.CorrectLevel.L } new qrCode(this.elid, { text: this.text, width: this.width, height: this.width, showLoading: true, // 是否显示loading loadingText: 二维码生成中, // loading文字 colorDark: this.colorDark, //二维码暗部颜色 colorLight: this.colorLight, //二维码亮部颜色 correctLevel: this.level, //二维码质量L/M/Q/H usingIn: this //在自定义组件下第二个参数传入组件实例this }) // 把当前画布指定区域的内容导出生成图片并返回文件路径。 // uni.canvasToTempFilePath({ // canvasId: this.elid, // success: (res) { // // 在H5平台下tempFilePath 为 base64 // // console.log(yz-qr图片路径:, res.tempFilePath) // this.canvasQrPath res.tempFilePath // this.$emit(update:qrPath, this.canvasQrPath) // } // }, this); console.log(绘制完成); } } } /script
style .qrcode { display: flex; align-items: center; justify-content: center; } /style
组件库依赖类
//Core code comes from https://github.com/davidshimjs/qrcodejsvar QRCode;(function() {/*** Get the type by string length* * private* param {String} sText* param {Number} nCorrectLevel* return {Number} type*/function _getTypeNumber(sText, nCorrectLevel) {var nType 1;var length _getUTF8Length(sText);for (var i 0, len QRCodeLimitLength.length; i len; i) {var nLimit 0;switch (nCorrectLevel) {case QRErrorCorrectLevel.L:nLimit QRCodeLimitLength[i][0];break;case QRErrorCorrectLevel.M:nLimit QRCodeLimitLength[i][1];break;case QRErrorCorrectLevel.Q:nLimit QRCodeLimitLength[i][2];break;case QRErrorCorrectLevel.H:nLimit QRCodeLimitLength[i][3];break;}if (length nLimit) {break;} else {nType;}}if (nType QRCodeLimitLength.length) {throw new Error(Too long data);}return nType;}function _getUTF8Length(sText) {var replacedText encodeURI(sText).toString().replace(/\%[0-9a-fA-F]{2}/g, a);return replacedText.length (replacedText.length ! sText ? 3 : 0);}function QR8bitByte(data) {this.mode QRMode.MODE_8BIT_BYTE;this.data data;this.parsedData [];// Added to support UTF-8 Charactersfor (var i 0, l this.data.length; i l; i) {var byteArray [];var code this.data.charCodeAt(i);if (code 0x10000) {byteArray[0] 0xF0 | ((code 0x1C0000) 18);byteArray[1] 0x80 | ((code 0x3F000) 12);byteArray[2] 0x80 | ((code 0xFC0) 6);byteArray[3] 0x80 | (code 0x3F);} else if (code 0x800) {byteArray[0] 0xE0 | ((code 0xF000) 12);byteArray[1] 0x80 | ((code 0xFC0) 6);byteArray[2] 0x80 | (code 0x3F);} else if (code 0x80) {byteArray[0] 0xC0 | ((code 0x7C0) 6);byteArray[1] 0x80 | (code 0x3F);} else {byteArray[0] code;}this.parsedData.push(byteArray);}this.parsedData Array.prototype.concat.apply([], this.parsedData);if (this.parsedData.length ! this.data.length) {this.parsedData.unshift(191);this.parsedData.unshift(187);this.parsedData.unshift(239);}}QR8bitByte.prototype {getLength: function(buffer) {return this.parsedData.length;},write: function(buffer) {for (var i 0, l this.parsedData.length; i l; i) {buffer.put(this.parsedData[i], 8);}}};// QRCodeModelfunction QRCodeModel(typeNumber, errorCorrectLevel) {this.typeNumber typeNumber;this.errorCorrectLevel errorCorrectLevel;this.modules null;this.moduleCount 0;this.dataCache null;this.dataList [];}QRCodeModel.prototype {addData: function(data) {var newData new QR8bitByte(data);this.dataList.push(newData);this.dataCache null;},isDark: function(row, col) {if (row 0 || this.moduleCount row || col 0 || this.moduleCount col) {throw new Error(row , col);}return this.modules[row][col];},getModuleCount: function() {return this.moduleCount;},make: function() {this.makeImpl(false, this.getBestMaskPattern());},makeImpl: function(test, maskPattern) {this.moduleCount this.typeNumber * 4 17;this.modules new Array(this.moduleCount);for (var row 0; row this.moduleCount; row) {this.modules[row] new Array(this.moduleCount);for (var col 0; col this.moduleCount; col) {this.modules[row][col] null;}}this.setupPositionProbePattern(0, 0);this.setupPositionProbePattern(this.moduleCount - 7, 0);this.setupPositionProbePattern(0, this.moduleCount - 7);this.setupPositionAdjustPattern();this.setupTimingPattern();this.setupTypeInfo(test, maskPattern);if (this.typeNumber 7) {this.setupTypeNumber(test);}if (this.dataCache null) {this.dataCache QRCodeModel.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);}this.mapData(this.dataCache, maskPattern);},setupPositionProbePattern: function(row, col) {for (var r -1; r 7; r) {if (row r -1 || this.moduleCount row r) continue;for (var c -1; c 7; c) {if (col c -1 || this.moduleCount col c) continue;if ((0 r r 6 (c 0 || c 6)) || (0 c c 6 (r 0 || r 6)) || (2 r r 4 2 c c 4)) {this.modules[row r][col c] true;} else {this.modules[row r][col c] false;}}}},getBestMaskPattern: function() {var minLostPoint 0;var pattern 0;for (var i 0; i 8; i) {this.makeImpl(true, i);var lostPoint QRUtil.getLostPoint(this);if (i 0 || minLostPoint lostPoint) {minLostPoint lostPoint;pattern i;}}return pattern;},createMovieClip: function(target_mc, instance_name, depth) {var qr_mc target_mc.createEmptyMovieClip(instance_name, depth);var cs 1;this.make();for (var row 0; row this.modules.length; row) {var y row * cs;for (var col 0; col this.modules[row].length; col) {var x col * cs;var dark this.modules[row][col];if (dark) {qr_mc.beginFill(0, 100);qr_mc.moveTo(x, y);qr_mc.lineTo(x cs, y);qr_mc.lineTo(x cs, y cs);qr_mc.lineTo(x, y cs);qr_mc.endFill();}}}return qr_mc;},setupTimingPattern: function() {for (var r 8; r this.moduleCount - 8; r) {if (this.modules[r][6] ! null) {continue;}this.modules[r][6] (r % 2 0);}for (var c 8; c this.moduleCount - 8; c) {if (this.modules[6][c] ! null) {continue;}this.modules[6][c] (c % 2 0);}},setupPositionAdjustPattern: function() {var pos QRUtil.getPatternPosition(this.typeNumber);for (var i 0; i pos.length; i) {for (var j 0; j pos.length; j) {var row pos[i];var col pos[j];if (this.modules[row][col] ! null) {continue;}for (var r -2; r 2; r) {for (var c -2; c 2; c) {if (r -2 || r 2 || c -2 || c 2 || (r 0 c 0)) {this.modules[row r][col c] true;} else {this.modules[row r][col c] false;}}}}}},setupTypeNumber: function(test) {var bits QRUtil.getBCHTypeNumber(this.typeNumber);for (var i 0; i 18; i) {var mod (!test ((bits i) 1) 1);this.modules[Math.floor(i / 3)][i % 3 this.moduleCount - 8 - 3] mod;}for (var i 0; i 18; i) {var mod (!test ((bits i) 1) 1);this.modules[i % 3 this.moduleCount - 8 - 3][Math.floor(i / 3)] mod;}},setupTypeInfo: function(test, maskPattern) {var data (this.errorCorrectLevel 3) | maskPattern;var bits QRUtil.getBCHTypeInfo(data);for (var i 0; i 15; i) {var mod (!test ((bits i) 1) 1);if (i 6) {this.modules[i][8] mod;} else if (i 8) {this.modules[i 1][8] mod;} else {this.modules[this.moduleCount - 15 i][8] mod;}}for (var i 0; i 15; i) {var mod (!test ((bits i) 1) 1);if (i 8) {this.modules[8][this.moduleCount - i - 1] mod;} else if (i 9) {this.modules[8][15 - i - 1 1] mod;} else {this.modules[8][15 - i - 1] mod;}}this.modules[this.moduleCount - 8][8] (!test);},mapData: function(data, maskPattern) {var inc -1;var row this.moduleCount - 1;var bitIndex 7;var byteIndex 0;for (var col this.moduleCount - 1; col 0; col - 2) {if (col 6) col--;while (true) {for (var c 0; c 2; c) {if (this.modules[row][col - c] null) {var dark false;if (byteIndex data.length) {dark (((data[byteIndex] bitIndex) 1) 1);}var mask QRUtil.getMask(maskPattern, row, col - c);if (mask) {dark !dark;}this.modules[row][col - c] dark;bitIndex--;if (bitIndex -1) {byteIndex;bitIndex 7;}}}row inc;if (row 0 || this.moduleCount row) {row - inc;inc -inc;break;}}}}};QRCodeModel.PAD0 0xEC;QRCodeModel.PAD1 0x11;QRCodeModel.createData function(typeNumber, errorCorrectLevel, dataList) {var rsBlocks QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);var buffer new QRBitBuffer();for (var i 0; i dataList.length; i) {var data dataList[i];buffer.put(data.mode, 4);buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber));data.write(buffer);}var totalDataCount 0;for (var i 0; i rsBlocks.length; i) {totalDataCount rsBlocks[i].dataCount;}if (buffer.getLengthInBits() totalDataCount * 8) {throw new Error(code length overflow. ( buffer.getLengthInBits() totalDataCount * 8 ));}if (buffer.getLengthInBits() 4 totalDataCount * 8) {buffer.put(0, 4);}while (buffer.getLengthInBits() % 8 ! 0) {buffer.putBit(false);}while (true) {if (buffer.getLengthInBits() totalDataCount * 8) {break;}buffer.put(QRCodeModel.PAD0, 8);if (buffer.getLengthInBits() totalDataCount * 8) {break;}buffer.put(QRCodeModel.PAD1, 8);}return QRCodeModel.createBytes(buffer, rsBlocks);};QRCodeModel.createBytes function(buffer, rsBlocks) {var offset 0;var maxDcCount 0;var maxEcCount 0;var dcdata new Array(rsBlocks.length);var ecdata new Array(rsBlocks.length);for (var r 0; r rsBlocks.length; r) {var dcCount rsBlocks[r].dataCount;var ecCount rsBlocks[r].totalCount - dcCount;maxDcCount Math.max(maxDcCount, dcCount);maxEcCount Math.max(maxEcCount, ecCount);dcdata[r] new Array(dcCount);for (var i 0; i dcdata[r].length; i) {dcdata[r][i] 0xff buffer.buffer[i offset];}offset dcCount;var rsPoly QRUtil.getErrorCorrectPolynomial(ecCount);var rawPoly new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);var modPoly rawPoly.mod(rsPoly);ecdata[r] new Array(rsPoly.getLength() - 1);for (var i 0; i ecdata[r].length; i) {var modIndex i modPoly.getLength() - ecdata[r].length;ecdata[r][i] (modIndex 0) ? modPoly.get(modIndex) : 0;}}var totalCodeCount 0;for (var i 0; i rsBlocks.length; i) {totalCodeCount rsBlocks[i].totalCount;}var data new Array(totalCodeCount);var index 0;for (var i 0; i maxDcCount; i) {for (var r 0; r rsBlocks.length; r) {if (i dcdata[r].length) {data[index] dcdata[r][i];}}}for (var i 0; i maxEcCount; i) {for (var r 0; r rsBlocks.length; r) {if (i ecdata[r].length) {data[index] ecdata[r][i];}}}return data;};var QRMode {MODE_NUMBER: 1 0,MODE_ALPHA_NUM: 1 1,MODE_8BIT_BYTE: 1 2,MODE_KANJI: 1 3};var QRErrorCorrectLevel {L: 1,M: 0,Q: 3,H: 2};var QRMaskPattern {PATTERN000: 0,PATTERN001: 1,PATTERN010: 2,PATTERN011: 3,PATTERN100: 4,PATTERN101: 5,PATTERN110: 6,PATTERN111: 7};var QRUtil {PATTERN_POSITION_TABLE: [[],[6, 18],[6, 22],[6, 26],[6, 30],[6, 34],[6, 22, 38],[6, 24, 42],[6, 26, 46],[6, 28, 50],[6, 30, 54],[6, 32, 58],[6, 34, 62],[6, 26, 46, 66],[6, 26, 48, 70],[6, 26, 50, 74],[6, 30, 54, 78],[6, 30, 56, 82],[6, 30, 58, 86],[6, 34, 62, 90],[6, 28, 50, 72, 94],[6, 26, 50, 74, 98],[6, 30, 54, 78, 102],[6, 28, 54, 80, 106],[6, 32, 58, 84, 110],[6, 30, 58, 86, 114],[6, 34, 62, 90, 118],[6, 26, 50, 74, 98, 122],[6, 30, 54, 78, 102, 126],[6, 26, 52, 78, 104, 130],[6, 30, 56, 82, 108, 134],[6, 34, 60, 86, 112, 138],[6, 30, 58, 86, 114, 142],[6, 34, 62, 90, 118, 146],[6, 30, 54, 78, 102, 126, 150],[6, 24, 50, 76, 102, 128, 154],[6, 28, 54, 80, 106, 132, 158],[6, 32, 58, 84, 110, 136, 162],[6, 26, 54, 82, 110, 138, 166],[6, 30, 58, 86, 114, 142, 170]],G15: (1 10) | (1 8) | (1 5) | (1 4) | (1 2) | (1 1) | (1 0),G18: (1 12) | (1 11) | (1 10) | (1 9) | (1 8) | (1 5) | (1 2) | (1 0),G15_MASK: (1 14) | (1 12) | (1 10) | (1 4) | (1 1),getBCHTypeInfo: function(data) {var d data 10;while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) 0) {d ^ (QRUtil.G15 (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15)));}return ((data 10) | d) ^ QRUtil.G15_MASK;},getBCHTypeNumber: function(data) {var d data 12;while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) 0) {d ^ (QRUtil.G18 (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18)));}return (data 12) | d;},getBCHDigit: function(data) {var digit 0;while (data ! 0) {digit;data 1;}return digit;},getPatternPosition: function(typeNumber) {return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];},getMask: function(maskPattern, i, j) {switch (maskPattern) {case QRMaskPattern.PATTERN000:return (i j) % 2 0;case QRMaskPattern.PATTERN001:return i % 2 0;case QRMaskPattern.PATTERN010:return j % 3 0;case QRMaskPattern.PATTERN011:return (i j) % 3 0;case QRMaskPattern.PATTERN100:return (Math.floor(i / 2) Math.floor(j / 3)) % 2 0;case QRMaskPattern.PATTERN101:return (i * j) % 2 (i * j) % 3 0;case QRMaskPattern.PATTERN110:return ((i * j) % 2 (i * j) % 3) % 2 0;case QRMaskPattern.PATTERN111:return ((i * j) % 3 (i j) % 2) % 2 0;default:throw new Error(bad maskPattern: maskPattern);}},getErrorCorrectPolynomial: function(errorCorrectLength) {var a new QRPolynomial([1], 0);for (var i 0; i errorCorrectLength; i) {a a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0));}return a;},getLengthInBits: function(mode, type) {if (1 type type 10) {switch (mode) {case QRMode.MODE_NUMBER:return 10;case QRMode.MODE_ALPHA_NUM:return 9;case QRMode.MODE_8BIT_BYTE:return 8;case QRMode.MODE_KANJI:return 8;default:throw new Error(mode: mode);}} else if (type 27) {switch (mode) {case QRMode.MODE_NUMBER:return 12;case QRMode.MODE_ALPHA_NUM:return 11;case QRMode.MODE_8BIT_BYTE:return 16;case QRMode.MODE_KANJI:return 10;default:throw new Error(mode: mode);}} else if (type 41) {switch (mode) {case QRMode.MODE_NUMBER:return 14;case QRMode.MODE_ALPHA_NUM:return 13;case QRMode.MODE_8BIT_BYTE:return 16;case QRMode.MODE_KANJI:return 12;default:throw new Error(mode: mode);}} else {throw new Error(type: type);}},getLostPoint: function(qrCode) {var moduleCount qrCode.getModuleCount();var lostPoint 0;for (var row 0; row moduleCount; row) {for (var col 0; col moduleCount; col) {var sameCount 0;var dark qrCode.isDark(row, col);for (var r -1; r 1; r) {if (row r 0 || moduleCount row r) {continue;}for (var c -1; c 1; c) {if (col c 0 || moduleCount col c) {continue;}if (r 0 c 0) {continue;}if (dark qrCode.isDark(row r, col c)) {sameCount;}}}if (sameCount 5) {lostPoint (3 sameCount - 5);}}}for (var row 0; row moduleCount - 1; row) {for (var col 0; col moduleCount - 1; col) {var count 0;if (qrCode.isDark(row, col)) count;if (qrCode.isDark(row 1, col)) count;if (qrCode.isDark(row, col 1)) count;if (qrCode.isDark(row 1, col 1)) count;if (count 0 || count 4) {lostPoint 3;}}}for (var row 0; row moduleCount; row) {for (var col 0; col moduleCount - 6; col) {if (qrCode.isDark(row, col) !qrCode.isDark(row, col 1) qrCode.isDark(row, col 2) qrCode.isDark(row, col 3) qrCode.isDark(row, col 4) !qrCode.isDark(row, col 5) qrCode.isDark(row, col 6)) {lostPoint 40;}}}for (var col 0; col moduleCount; col) {for (var row 0; row moduleCount - 6; row) {if (qrCode.isDark(row, col) !qrCode.isDark(row 1, col) qrCode.isDark(row 2,col) qrCode.isDark(row 3, col) qrCode.isDark(row 4, col) !qrCode.isDark(row 5, col) qrCode.isDark(row 6, col)) {lostPoint 40;}}}var darkCount 0;for (var col 0; col moduleCount; col) {for (var row 0; row moduleCount; row) {if (qrCode.isDark(row, col)) {darkCount;}}}var ratio Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;lostPoint ratio * 10;return lostPoint;}};var QRMath {glog: function(n) {if (n 1) {throw new Error(glog( n ));}return QRMath.LOG_TABLE[n];},gexp: function(n) {while (n 0) {n 255;}while (n 256) {n - 255;}return QRMath.EXP_TABLE[n];},EXP_TABLE: new Array(256),LOG_TABLE: new Array(256)};for (var i 0; i 8; i) {QRMath.EXP_TABLE[i] 1 i;}for (var i 8; i 256; i) {QRMath.EXP_TABLE[i] QRMath.EXP_TABLE[i - 4] ^ QRMath.EXP_TABLE[i - 5] ^ QRMath.EXP_TABLE[i - 6] ^ QRMath.EXP_TABLE[i - 8];}for (var i 0; i 255; i) {QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] i;}function QRPolynomial(num, shift) {if (num.length undefined) {throw new Error(num.length / shift);}var offset 0;while (offset num.length num[offset] 0) {offset;}this.num new Array(num.length - offset shift);for (var i 0; i num.length - offset; i) {this.num[i] num[i offset];}}QRPolynomial.prototype {get: function(index) {return this.num[index];},getLength: function() {return this.num.length;},multiply: function(e) {var num new Array(this.getLength() e.getLength() - 1);for (var i 0; i this.getLength(); i) {for (var j 0; j e.getLength(); j) {num[i j] ^ QRMath.gexp(QRMath.glog(this.get(i)) QRMath.glog(e.get(j)));}}return new QRPolynomial(num, 0);},mod: function(e) {if (this.getLength() - e.getLength() 0) {return this;}var ratio QRMath.glog(this.get(0)) - QRMath.glog(e.get(0));var num new Array(this.getLength());for (var i 0; i this.getLength(); i) {num[i] this.get(i);}for (var i 0; i e.getLength(); i) {num[i] ^ QRMath.gexp(QRMath.glog(e.get(i)) ratio);}return new QRPolynomial(num, 0).mod(e);}};function QRRSBlock(totalCount, dataCount) {this.totalCount totalCount;this.dataCount dataCount;}QRRSBlock.RS_BLOCK_TABLE [[1, 26, 19],[1, 26, 16],[1, 26, 13],[1, 26, 9],[1, 44, 34],[1, 44, 28],[1, 44, 22],[1, 44, 16],[1, 70, 55],[1, 70, 44],[2, 35, 17],[2, 35, 13],[1, 100, 80],[2, 50, 32],[2, 50, 24],[4, 25, 9],[1, 134, 108],[2, 67, 43],[2, 33, 15, 2, 34, 16],[2, 33, 11, 2, 34, 12],[2, 86, 68],[4, 43, 27],[4, 43, 19],[4, 43, 15],[2, 98, 78],[4, 49, 31],[2, 32, 14, 4, 33, 15],[4, 39, 13, 1, 40, 14],[2, 121, 97],[2, 60, 38, 2, 61, 39],[4, 40, 18, 2, 41, 19],[4, 40, 14, 2, 41, 15],[2, 146, 116],[3, 58, 36, 2, 59, 37],[4, 36, 16, 4, 37, 17],[4, 36, 12, 4, 37, 13],[2, 86, 68, 2, 87, 69],[4, 69, 43, 1, 70, 44],[6, 43, 19, 2, 44, 20],[6, 43, 15, 2, 44, 16],[4, 101, 81],[1, 80, 50, 4, 81, 51],[4, 50, 22, 4, 51, 23],[3, 36, 12, 8, 37, 13],[2, 116, 92, 2, 117, 93],[6, 58, 36, 2, 59, 37],[4, 46, 20, 6, 47, 21],[7, 42, 14, 4, 43, 15],[4, 133, 107],[8, 59, 37, 1, 60, 38],[8, 44, 20, 4, 45, 21],[12, 33, 11, 4, 34, 12],[3, 145, 115, 1, 146, 116],[4, 64, 40, 5, 65, 41],[11, 36, 16, 5, 37, 17],[11, 36, 12, 5, 37, 13],[5, 109, 87, 1, 110, 88],[5, 65, 41, 5, 66, 42],[5, 54, 24, 7, 55, 25],[11, 36, 12],[5, 122, 98, 1, 123, 99],[7, 73, 45, 3, 74, 46],[15, 43, 19, 2, 44, 20],[3, 45, 15, 13, 46, 16],[1, 135, 107, 5, 136, 108],[10, 74, 46, 1, 75, 47],[1, 50, 22, 15, 51, 23],[2, 42, 14, 17, 43, 15],[5, 150, 120, 1, 151, 121],[9, 69, 43, 4, 70, 44],[17, 50, 22, 1, 51, 23],[2, 42, 14, 19, 43, 15],[3, 141, 113, 4, 142, 114],[3, 70, 44, 11, 71, 45],[17, 47, 21, 4, 48, 22],[9, 39, 13, 16, 40, 14],[3, 135, 107, 5, 136, 108],[3, 67, 41, 13, 68, 42],[15, 54, 24, 5, 55, 25],[15, 43, 15, 10, 44, 16],[4, 144, 116, 4, 145, 117],[17, 68, 42],[17, 50, 22, 6, 51, 23],[19, 46, 16, 6, 47, 17],[2, 139, 111, 7, 140, 112],[17, 74, 46],[7, 54, 24, 16, 55, 25],[34, 37, 13],[4, 151, 121, 5, 152, 122],[4, 75, 47, 14, 76, 48],[11, 54, 24, 14, 55, 25],[16, 45, 15, 14, 46, 16],[6, 147, 117, 4, 148, 118],[6, 73, 45, 14, 74, 46],[11, 54, 24, 16, 55, 25],[30, 46, 16, 2, 47, 17],[8, 132, 106, 4, 133, 107],[8, 75, 47, 13, 76, 48],[7, 54, 24, 22, 55, 25],[22, 45, 15, 13, 46, 16],[10, 142, 114, 2, 143, 115],[19, 74, 46, 4, 75, 47],[28, 50, 22, 6, 51, 23],[33, 46, 16, 4, 47, 17],[8, 152, 122, 4, 153, 123],[22, 73, 45, 3, 74, 46],[8, 53, 23, 26, 54, 24],[12, 45, 15, 28, 46, 16],[3, 147, 117, 10, 148, 118],[3, 73, 45, 23, 74, 46],[4, 54, 24, 31, 55, 25],[11, 45, 15, 31, 46, 16],[7, 146, 116, 7, 147, 117],[21, 73, 45, 7, 74, 46],[1, 53, 23, 37, 54, 24],[19, 45, 15, 26, 46, 16],[5, 145, 115, 10, 146, 116],[19, 75, 47, 10, 76, 48],[15, 54, 24, 25, 55, 25],[23, 45, 15, 25, 46, 16],[13, 145, 115, 3, 146, 116],[2, 74, 46, 29, 75, 47],[42, 54, 24, 1, 55, 25],[23, 45, 15, 28, 46, 16],[17, 145, 115],[10, 74, 46, 23, 75, 47],[10, 54, 24, 35, 55, 25],[19, 45, 15, 35, 46, 16],[17, 145, 115, 1, 146, 116],[14, 74, 46, 21, 75, 47],[29, 54, 24, 19, 55, 25],[11, 45, 15, 46, 46, 16],[13, 145, 115, 6, 146, 116],[14, 74, 46, 23, 75, 47],[44, 54, 24, 7, 55, 25],[59, 46, 16, 1, 47, 17],[12, 151, 121, 7, 152, 122],[12, 75, 47, 26, 76, 48],[39, 54, 24, 14, 55, 25],[22, 45, 15, 41, 46, 16],[6, 151, 121, 14, 152, 122],[6, 75, 47, 34, 76, 48],[46, 54, 24, 10, 55, 25],[2, 45, 15, 64, 46, 16],[17, 152, 122, 4, 153, 123],[29, 74, 46, 14, 75, 47],[49, 54, 24, 10, 55, 25],[24, 45, 15, 46, 46, 16],[4, 152, 122, 18, 153, 123],[13, 74, 46, 32, 75, 47],[48, 54, 24, 14, 55, 25],[42, 45, 15, 32, 46, 16],[20, 147, 117, 4, 148, 118],[40, 75, 47, 7, 76, 48],[43, 54, 24, 22, 55, 25],[10, 45, 15, 67, 46, 16],[19, 148, 118, 6, 149, 119],[18, 75, 47, 31, 76, 48],[34, 54, 24, 34, 55, 25],[20, 45, 15, 61, 46, 16]];QRRSBlock.getRSBlocks function(typeNumber, errorCorrectLevel) {var rsBlock QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);if (rsBlock undefined) {throw new Error(bad rs block typeNumber: typeNumber /errorCorrectLevel: errorCorrectLevel);}var length rsBlock.length / 3;var list [];for (var i 0; i length; i) {var count rsBlock[i * 3 0];var totalCount rsBlock[i * 3 1];var dataCount rsBlock[i * 3 2];for (var j 0; j count; j) {list.push(new QRRSBlock(totalCount, dataCount));}}return list;};QRRSBlock.getRsBlockTable function(typeNumber, errorCorrectLevel) {switch (errorCorrectLevel) {case QRErrorCorrectLevel.L:return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 0];case QRErrorCorrectLevel.M:return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 1];case QRErrorCorrectLevel.Q:return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 2];case QRErrorCorrectLevel.H:return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 3];default:return undefined;}};function QRBitBuffer() {this.buffer [];this.length 0;}QRBitBuffer.prototype {get: function(index) {var bufIndex Math.floor(index / 8);return ((this.buffer[bufIndex] (7 - index % 8)) 1) 1;},put: function(num, length) {for (var i 0; i length; i) {this.putBit(((num (length - i - 1)) 1) 1);}},getLengthInBits: function() {return this.length;},putBit: function(bit) {var bufIndex Math.floor(this.length / 8);if (this.buffer.length bufIndex) {this.buffer.push(0);}if (bit) {this.buffer[bufIndex] | (0x80 (this.length % 8));}this.length;}};var QRCodeLimitLength [[17, 14, 11, 7],[32, 26, 20, 14],[53, 42, 32, 24],[78, 62, 46, 34],[106, 84, 60, 44],[134, 106, 74, 58],[154, 122, 86, 64],[192, 152, 108, 84],[230, 180, 130, 98],[271, 213, 151, 119],[321, 251, 177, 137],[367, 287, 203, 155],[425, 331, 241, 177],[458, 362, 258, 194],[520, 412, 292, 220],[586, 450, 322, 250],[644, 504, 364, 280],[718, 560, 394, 310],[792, 624, 442, 338],[858, 666, 482, 382],[929, 711, 509, 403],[1003, 779, 565, 439],[1091, 857, 611, 461],[1171, 911, 661, 511],[1273, 997, 715, 535],[1367, 1059, 751, 593],[1465, 1125, 805, 625],[1528, 1190, 868, 658],[1628, 1264, 908, 698],[1732, 1370, 982, 742],[1840, 1452, 1030, 790],[1952, 1538, 1112, 842],[2068, 1628, 1168, 898],[2188, 1722, 1228, 958],[2303, 1809, 1283, 983],[2431, 1911, 1351, 1051],[2563, 1989, 1423, 1093],[2699, 2099, 1499, 1139],[2809, 2213, 1579, 1219],[2953, 2331, 1663, 1273]];// QRCode objectQRCode function(canvasId, vOption) {this._htOption {width: 256,height: 256,typeNumber: 4,colorDark: #000000,colorLight: #ffffff,correctLevel: QRErrorCorrectLevel.H};if (typeof vOption string) {vOption {text: vOption};}// Overwrites optionsif (vOption) {for (var i in vOption) {this._htOption[i] vOption[i];}}this._oQRCode null;this.canvasId canvasIdif (this._htOption.text this.canvasId) {this.makeCode(this._htOption.text);}};QRCode.prototype.makeCode function(sText) {this._oQRCode new QRCodeModel(_getTypeNumber(sText, this._htOption.correctLevel), this._htOption.correctLevel);this._oQRCode.addData(sText);this._oQRCode.make();this.makeImage();};QRCode.prototype.makeImage function() {var _oContextif (this._htOption.usingIn) {_oContext wx.createCanvasContext(this.canvasId, this._htOption.usingIn)} else {_oContext wx.createCanvasContext(this.canvasId)}var _htOption this._htOption;var oQRCode this._oQRCodevar nCount oQRCode.getModuleCount();var nWidth _htOption.width / nCount;var nHeight _htOption.height / nCount;var nRoundedWidth Math.round(nWidth);var nRoundedHeight Math.round(nHeight);if (_htOption.image _htOption.image ! ) {_oContext.drawImage(_htOption.image, 0, 0, _htOption.width, _htOption.height)}for (var row 0; row nCount; row) {for (var col 0; col nCount; col) {var bIsDark oQRCode.isDark(row, col);var nLeft col * nWidth;var nTop row * nHeight;_oContext.setStrokeStyle(bIsDark ? _htOption.colorDark : _htOption.colorLight)// _oContext.setStrokeStyle(yellow)_oContext.setLineWidth(1)_oContext.setFillStyle(bIsDark ? _htOption.colorDark : _htOption.colorLight)// _oContext.setFillStyle(red)// if (bIsDark) {_oContext.fillRect(nLeft, nTop, nWidth, nHeight);// }// 안티 앨리어싱 방지 처리// if (bIsDark) {_oContext.strokeRect(Math.floor(nLeft) 0.5,Math.floor(nTop) 0.5,nRoundedWidth,nRoundedHeight);_oContext.strokeRect(Math.ceil(nLeft) - 0.5,Math.ceil(nTop) - 0.5,nRoundedWidth,nRoundedHeight);// }// _oContext.fillRect(// Math.floor(nLeft) 0.5,// Math.floor(nTop) 0.5,// nRoundedWidth,// nRoundedHeight// );// _oContext.fillRect(// Math.ceil(nLeft) - 0.5,// Math.ceil(nTop) - 0.5,// nRoundedWidth,// nRoundedHeight// );// _oContext.clearRect(// Math.floor(nLeft) 0.5,// Math.floor(nTop) 0.5,// nRoundedWidth,// nRoundedHeight// );// _oContext.clearRect(// Math.ceil(nLeft) - 0.5,// Math.ceil(nTop) - 0.5,// nRoundedWidth,// nRoundedHeight// );}}_oContext.draw()};// 保存为图片将临时路径传给回调QRCode.prototype.exportImage function(callback) {if (!callback) {return}wx.canvasToTempFilePath({x: 0,y: 0,width: this._htOption.width,height: this._htOption.height,destWidth: this._htOption.width,destHeight: this._htOption.height,canvasId: this.canvasId,success: function(res) {console.log(res.tempFilePath)callback(res.tempFilePath)}})}QRCode.CorrectLevel QRErrorCorrectLevel;
})();export default QRCode组件库使用
templateview classcontainer container329152view classflex flex-wrap diygw-col-24 flex-direction-column items-centerview classdiygw-col-0diy-qrcode :width100 :textqrcode/diy-qrcode/view/viewview classclearfix/view/view
/templatescriptexport default {data() {return {//用户全局信息userInfo: {},//页面传参globalOption: {},//自定义全局变量globalData: {},qrcode: https://www.diygw.com};},onShareAppMessage(e) {},onShow() {this.setCurrentPage(this);},onLoad(option) {this.setCurrentPage(this);if (option) {this.setData({globalOption: this.getOption(option)});}this.init();},methods: {async init() {await this.clickFunction();},// 调用方法 自定义方法async clickFunction(param) {let thiz this;this.sct 2;},// 新增方法 自定义方法async cFunction(param) {let thiz this;console.log(this.sct);}}};
/scriptstyle langscss scoped.container329152 {}
/styleuniapp二维码组件库已经测试兼容了微信小程序、h5、app等平台。
