1282 lines
33 KiB
JavaScript
1282 lines
33 KiB
JavaScript
/**
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* weapp.qrcode.js v1.0.0 (https://github.com/yingye/weapp-qrcode#readme)
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*/
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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typeof define === 'function' && define.amd ? define(factory) :
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(global.drawQrcode = factory());
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}(this, (function () { 'use strict';
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var hasOwn = Object.prototype.hasOwnProperty;
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var toStr = Object.prototype.toString;
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var defineProperty = Object.defineProperty;
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var gOPD = Object.getOwnPropertyDescriptor;
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var isArray = function isArray(arr) {
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if (typeof Array.isArray === 'function') {
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return Array.isArray(arr);
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}
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return toStr.call(arr) === '[object Array]';
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};
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var isPlainObject = function isPlainObject(obj) {
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if (!obj || toStr.call(obj) !== '[object Object]') {
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return false;
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}
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var hasOwnConstructor = hasOwn.call(obj, 'constructor');
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var hasIsPrototypeOf = obj.constructor && obj.constructor.prototype && hasOwn.call(obj.constructor.prototype, 'isPrototypeOf');
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// Not own constructor property must be Object
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if (obj.constructor && !hasOwnConstructor && !hasIsPrototypeOf) {
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return false;
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}
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// Own properties are enumerated firstly, so to speed up,
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// if last one is own, then all properties are own.
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var key;
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for (key in obj) { /**/ }
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return typeof key === 'undefined' || hasOwn.call(obj, key);
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};
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// If name is '__proto__', and Object.defineProperty is available, define __proto__ as an own property on target
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var setProperty = function setProperty(target, options) {
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if (defineProperty && options.name === '__proto__') {
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defineProperty(target, options.name, {
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enumerable: true,
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configurable: true,
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value: options.newValue,
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writable: true
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});
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} else {
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target[options.name] = options.newValue;
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}
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};
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// Return undefined instead of __proto__ if '__proto__' is not an own property
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var getProperty = function getProperty(obj, name) {
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if (name === '__proto__') {
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if (!hasOwn.call(obj, name)) {
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return void 0;
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} else if (gOPD) {
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// In early versions of node, obj['__proto__'] is buggy when obj has
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// __proto__ as an own property. Object.getOwnPropertyDescriptor() works.
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return gOPD(obj, name).value;
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}
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}
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return obj[name];
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};
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var extend = function extend() {
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var options, name, src, copy, copyIsArray, clone;
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var target = arguments[0];
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var i = 1;
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var length = arguments.length;
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var deep = false;
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// Handle a deep copy situation
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if (typeof target === 'boolean') {
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deep = target;
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target = arguments[1] || {};
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// skip the boolean and the target
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i = 2;
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}
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if (target == null || (typeof target !== 'object' && typeof target !== 'function')) {
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target = {};
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}
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for (; i < length; ++i) {
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options = arguments[i];
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// Only deal with non-null/undefined values
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if (options != null) {
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// Extend the base object
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for (name in options) {
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src = getProperty(target, name);
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copy = getProperty(options, name);
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// Prevent never-ending loop
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if (target !== copy) {
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// Recurse if we're merging plain objects or arrays
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if (deep && copy && (isPlainObject(copy) || (copyIsArray = isArray(copy)))) {
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if (copyIsArray) {
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copyIsArray = false;
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clone = src && isArray(src) ? src : [];
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} else {
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clone = src && isPlainObject(src) ? src : {};
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}
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// Never move original objects, clone them
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setProperty(target, { name: name, newValue: extend(deep, clone, copy) });
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// Don't bring in undefined values
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} else if (typeof copy !== 'undefined') {
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setProperty(target, { name: name, newValue: copy });
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}
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}
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}
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}
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}
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// Return the modified object
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return target;
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};
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//---------------------------------------------------------------------
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// QRCode for JavaScript
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//
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// Copyright (c) 2009 Kazuhiko Arase
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//
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// URL: http://www.d-project.com/
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//
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// Licensed under the MIT license:
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// http://www.opensource.org/licenses/mit-license.php
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//
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// The word "QR Code" is registered trademark of
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// DENSO WAVE INCORPORATED
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// http://www.denso-wave.com/qrcode/faqpatent-e.html
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//
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//---------------------------------------------------------------------
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//---------------------------------------------------------------------
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// QR8bitByte
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//---------------------------------------------------------------------
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function QR8bitByte(data) {
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this.mode = QRMode.MODE_8BIT_BYTE;
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this.data = data;
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}
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QR8bitByte.prototype = {
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getLength: function (buffer) {
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return this.data.length;
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},
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write: function (buffer) {
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for (var i = 0; i < this.data.length; i++) {
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// not JIS ...
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buffer.put(this.data.charCodeAt(i), 8);
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}
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}
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};
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//---------------------------------------------------------------------
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// QRCode
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//---------------------------------------------------------------------
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function QRCode(typeNumber, errorCorrectLevel) {
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this.typeNumber = typeNumber;
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this.errorCorrectLevel = errorCorrectLevel;
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this.modules = null;
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this.moduleCount = 0;
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this.dataCache = null;
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this.dataList = new Array();
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}
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QRCode.prototype = {
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addData: function (data) {
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var newData = new QR8bitByte(data);
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this.dataList.push(newData);
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this.dataCache = null;
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},
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isDark: function (row, col) {
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if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) {
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throw new Error(row + "," + col);
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}
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return this.modules[row][col];
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},
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getModuleCount: function () {
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return this.moduleCount;
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},
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make: function () {
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// Calculate automatically typeNumber if provided is < 1
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if (this.typeNumber < 1) {
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var typeNumber = 1;
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for (typeNumber = 1; typeNumber < 40; typeNumber++) {
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var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, this.errorCorrectLevel);
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var buffer = new QRBitBuffer();
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var totalDataCount = 0;
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for (var i = 0; i < rsBlocks.length; i++) {
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totalDataCount += rsBlocks[i].dataCount;
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}
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for (var i = 0; i < this.dataList.length; i++) {
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var data = this.dataList[i];
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buffer.put(data.mode, 4);
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buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber));
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data.write(buffer);
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}
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if (buffer.getLengthInBits() <= totalDataCount * 8) break;
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}
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this.typeNumber = typeNumber;
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}
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this.makeImpl(false, this.getBestMaskPattern());
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},
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makeImpl: function (test, maskPattern) {
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this.moduleCount = this.typeNumber * 4 + 17;
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this.modules = new Array(this.moduleCount);
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for (var row = 0; row < this.moduleCount; row++) {
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this.modules[row] = new Array(this.moduleCount);
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for (var col = 0; col < this.moduleCount; col++) {
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this.modules[row][col] = null; //(col + row) % 3;
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}
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}
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this.setupPositionProbePattern(0, 0);
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this.setupPositionProbePattern(this.moduleCount - 7, 0);
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this.setupPositionProbePattern(0, this.moduleCount - 7);
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this.setupPositionAdjustPattern();
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this.setupTimingPattern();
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this.setupTypeInfo(test, maskPattern);
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if (this.typeNumber >= 7) {
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this.setupTypeNumber(test);
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}
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if (this.dataCache == null) {
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this.dataCache = QRCode.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);
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}
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this.mapData(this.dataCache, maskPattern);
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},
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setupPositionProbePattern: function (row, col) {
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for (var r = -1; r <= 7; r++) {
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if (row + r <= -1 || this.moduleCount <= row + r) continue;
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for (var c = -1; c <= 7; c++) {
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if (col + c <= -1 || this.moduleCount <= col + c) continue;
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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) {
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this.modules[row + r][col + c] = true;
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} else {
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this.modules[row + r][col + c] = false;
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}
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}
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}
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},
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getBestMaskPattern: function () {
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var minLostPoint = 0;
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var pattern = 0;
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for (var i = 0; i < 8; i++) {
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this.makeImpl(true, i);
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var lostPoint = QRUtil.getLostPoint(this);
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if (i == 0 || minLostPoint > lostPoint) {
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minLostPoint = lostPoint;
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pattern = i;
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}
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}
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return pattern;
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},
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createMovieClip: function (target_mc, instance_name, depth) {
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var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth);
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var cs = 1;
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this.make();
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for (var row = 0; row < this.modules.length; row++) {
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var y = row * cs;
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for (var col = 0; col < this.modules[row].length; col++) {
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var x = col * cs;
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var dark = this.modules[row][col];
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if (dark) {
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qr_mc.beginFill(0, 100);
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qr_mc.moveTo(x, y);
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qr_mc.lineTo(x + cs, y);
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qr_mc.lineTo(x + cs, y + cs);
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qr_mc.lineTo(x, y + cs);
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qr_mc.endFill();
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}
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}
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}
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return qr_mc;
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},
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setupTimingPattern: function () {
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for (var r = 8; r < this.moduleCount - 8; r++) {
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if (this.modules[r][6] != null) {
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continue;
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}
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this.modules[r][6] = r % 2 == 0;
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}
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for (var c = 8; c < this.moduleCount - 8; c++) {
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if (this.modules[6][c] != null) {
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continue;
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}
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this.modules[6][c] = c % 2 == 0;
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}
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},
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setupPositionAdjustPattern: function () {
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var pos = QRUtil.getPatternPosition(this.typeNumber);
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for (var i = 0; i < pos.length; i++) {
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for (var j = 0; j < pos.length; j++) {
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var row = pos[i];
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var col = pos[j];
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if (this.modules[row][col] != null) {
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continue;
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}
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for (var r = -2; r <= 2; r++) {
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for (var c = -2; c <= 2; c++) {
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if (r == -2 || r == 2 || c == -2 || c == 2 || r == 0 && c == 0) {
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this.modules[row + r][col + c] = true;
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} else {
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this.modules[row + r][col + c] = false;
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}
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}
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}
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}
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}
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},
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setupTypeNumber: function (test) {
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var bits = QRUtil.getBCHTypeNumber(this.typeNumber);
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for (var i = 0; i < 18; i++) {
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var mod = !test && (bits >> i & 1) == 1;
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this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod;
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}
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for (var i = 0; i < 18; i++) {
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var mod = !test && (bits >> i & 1) == 1;
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this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
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}
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},
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setupTypeInfo: function (test, maskPattern) {
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var data = this.errorCorrectLevel << 3 | maskPattern;
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var bits = QRUtil.getBCHTypeInfo(data);
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// vertical
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for (var i = 0; i < 15; i++) {
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var mod = !test && (bits >> i & 1) == 1;
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if (i < 6) {
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this.modules[i][8] = mod;
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} else if (i < 8) {
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this.modules[i + 1][8] = mod;
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} else {
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this.modules[this.moduleCount - 15 + i][8] = mod;
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}
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}
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// horizontal
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for (var i = 0; i < 15; i++) {
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var mod = !test && (bits >> i & 1) == 1;
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if (i < 8) {
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this.modules[8][this.moduleCount - i - 1] = mod;
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} else if (i < 9) {
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this.modules[8][15 - i - 1 + 1] = mod;
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} else {
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this.modules[8][15 - i - 1] = mod;
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}
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}
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// fixed module
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this.modules[this.moduleCount - 8][8] = !test;
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},
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mapData: function (data, maskPattern) {
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var inc = -1;
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var row = this.moduleCount - 1;
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var bitIndex = 7;
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var byteIndex = 0;
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for (var col = this.moduleCount - 1; col > 0; col -= 2) {
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if (col == 6) col--;
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while (true) {
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for (var c = 0; c < 2; c++) {
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if (this.modules[row][col - c] == null) {
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var dark = false;
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if (byteIndex < data.length) {
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dark = (data[byteIndex] >>> bitIndex & 1) == 1;
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}
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var mask = QRUtil.getMask(maskPattern, row, col - c);
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if (mask) {
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dark = !dark;
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}
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this.modules[row][col - c] = dark;
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bitIndex--;
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if (bitIndex == -1) {
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byteIndex++;
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bitIndex = 7;
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}
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}
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}
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row += inc;
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if (row < 0 || this.moduleCount <= row) {
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row -= inc;
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inc = -inc;
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break;
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}
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}
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}
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}
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};
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QRCode.PAD0 = 0xEC;
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QRCode.PAD1 = 0x11;
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QRCode.createData = function (typeNumber, errorCorrectLevel, dataList) {
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var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
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var buffer = new QRBitBuffer();
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for (var i = 0; i < dataList.length; i++) {
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var data = dataList[i];
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buffer.put(data.mode, 4);
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buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber));
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data.write(buffer);
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}
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// calc num max data.
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var totalDataCount = 0;
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for (var i = 0; i < rsBlocks.length; i++) {
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totalDataCount += rsBlocks[i].dataCount;
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}
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if (buffer.getLengthInBits() > totalDataCount * 8) {
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throw new Error("code length overflow. (" + buffer.getLengthInBits() + ">" + totalDataCount * 8 + ")");
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}
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// end code
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if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
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buffer.put(0, 4);
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}
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// padding
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while (buffer.getLengthInBits() % 8 != 0) {
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buffer.putBit(false);
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}
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// padding
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while (true) {
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if (buffer.getLengthInBits() >= totalDataCount * 8) {
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break;
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}
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buffer.put(QRCode.PAD0, 8);
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if (buffer.getLengthInBits() >= totalDataCount * 8) {
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break;
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}
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buffer.put(QRCode.PAD1, 8);
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}
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return QRCode.createBytes(buffer, rsBlocks);
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};
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QRCode.createBytes = function (buffer, rsBlocks) {
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var offset = 0;
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var maxDcCount = 0;
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var maxEcCount = 0;
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var dcdata = new Array(rsBlocks.length);
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var ecdata = new Array(rsBlocks.length);
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for (var r = 0; r < rsBlocks.length; r++) {
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var dcCount = rsBlocks[r].dataCount;
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var ecCount = rsBlocks[r].totalCount - dcCount;
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maxDcCount = Math.max(maxDcCount, dcCount);
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maxEcCount = Math.max(maxEcCount, ecCount);
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dcdata[r] = new Array(dcCount);
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for (var i = 0; i < dcdata[r].length; i++) {
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dcdata[r][i] = 0xff & buffer.buffer[i + offset];
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}
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offset += dcCount;
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var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
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var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);
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var modPoly = rawPoly.mod(rsPoly);
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ecdata[r] = new Array(rsPoly.getLength() - 1);
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for (var i = 0; i < ecdata[r].length; i++) {
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var modIndex = i + modPoly.getLength() - ecdata[r].length;
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ecdata[r][i] = modIndex >= 0 ? modPoly.get(modIndex) : 0;
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}
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}
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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;
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRMode
|
|
//---------------------------------------------------------------------
|
|
|
|
var QRMode = {
|
|
MODE_NUMBER: 1 << 0,
|
|
MODE_ALPHA_NUM: 1 << 1,
|
|
MODE_8BIT_BYTE: 1 << 2,
|
|
MODE_KANJI: 1 << 3
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRErrorCorrectLevel
|
|
//---------------------------------------------------------------------
|
|
|
|
var QRErrorCorrectLevel = {
|
|
L: 1,
|
|
M: 0,
|
|
Q: 3,
|
|
H: 2
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRMaskPattern
|
|
//---------------------------------------------------------------------
|
|
|
|
var QRMaskPattern = {
|
|
PATTERN000: 0,
|
|
PATTERN001: 1,
|
|
PATTERN010: 2,
|
|
PATTERN011: 3,
|
|
PATTERN100: 4,
|
|
PATTERN101: 5,
|
|
PATTERN110: 6,
|
|
PATTERN111: 7
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRUtil
|
|
//---------------------------------------------------------------------
|
|
|
|
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) {
|
|
|
|
// 1 - 9
|
|
|
|
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) {
|
|
|
|
// 10 - 26
|
|
|
|
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) {
|
|
|
|
// 27 - 40
|
|
|
|
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;
|
|
|
|
// LEVEL1
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
// LEVEL2
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
// LEVEL3
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
// LEVEL4
|
|
|
|
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;
|
|
}
|
|
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRMath
|
|
//---------------------------------------------------------------------
|
|
|
|
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;
|
|
}
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRPolynomial
|
|
//---------------------------------------------------------------------
|
|
|
|
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);
|
|
}
|
|
|
|
// recursive call
|
|
return new QRPolynomial(num, 0).mod(e);
|
|
}
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRRSBlock
|
|
//---------------------------------------------------------------------
|
|
|
|
function QRRSBlock(totalCount, dataCount) {
|
|
this.totalCount = totalCount;
|
|
this.dataCount = dataCount;
|
|
}
|
|
|
|
QRRSBlock.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]];
|
|
|
|
QRRSBlock.getRSBlocks = function (typeNumber, errorCorrectLevel) {
|
|
|
|
var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
|
|
|
|
if (rsBlock == undefined) {
|
|
throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel);
|
|
}
|
|
|
|
var length = rsBlock.length / 3;
|
|
|
|
var list = new Array();
|
|
|
|
for (var i = 0; i < length; i++) {
|
|
|
|
var count = rsBlock[i * 3 + 0];
|
|
var totalCount = rsBlock[i * 3 + 1];
|
|
var dataCount = rsBlock[i * 3 + 2];
|
|
|
|
for (var j = 0; j < count; j++) {
|
|
list.push(new QRRSBlock(totalCount, dataCount));
|
|
}
|
|
}
|
|
|
|
return list;
|
|
};
|
|
|
|
QRRSBlock.getRsBlockTable = function (typeNumber, errorCorrectLevel) {
|
|
|
|
switch (errorCorrectLevel) {
|
|
case QRErrorCorrectLevel.L:
|
|
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
|
|
case QRErrorCorrectLevel.M:
|
|
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
|
|
case QRErrorCorrectLevel.Q:
|
|
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
|
|
case QRErrorCorrectLevel.H:
|
|
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
|
|
default:
|
|
return undefined;
|
|
}
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// 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) == 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++;
|
|
}
|
|
};
|
|
|
|
// support Chinese
|
|
function utf16to8(str) {
|
|
var out, i, len, c;
|
|
out = '';
|
|
len = str.length;
|
|
for (i = 0; i < len; i++) {
|
|
c = str.charCodeAt(i);
|
|
if (c >= 0x0001 && c <= 0x007F) {
|
|
out += str.charAt(i);
|
|
} else if (c > 0x07FF) {
|
|
out += String.fromCharCode(0xE0 | c >> 12 & 0x0F);
|
|
out += String.fromCharCode(0x80 | c >> 6 & 0x3F);
|
|
out += String.fromCharCode(0x80 | c >> 0 & 0x3F);
|
|
} else {
|
|
out += String.fromCharCode(0xC0 | c >> 6 & 0x1F);
|
|
out += String.fromCharCode(0x80 | c >> 0 & 0x3F);
|
|
}
|
|
}
|
|
return out;
|
|
}
|
|
|
|
function drawQrcode(options) {
|
|
options = options || {};
|
|
options = extend(true, {
|
|
width: 256,
|
|
height: 256,
|
|
x: 0,
|
|
y: 0,
|
|
typeNumber: -1,
|
|
correctLevel: QRErrorCorrectLevel.H,
|
|
background: '#ffffff',
|
|
foreground: '#000000',
|
|
image: {
|
|
imageResource: '',
|
|
dx: 0,
|
|
dy: 0,
|
|
dWidth: 100,
|
|
dHeight: 100
|
|
}
|
|
}, options);
|
|
|
|
if (!options.canvasId && !options.ctx) {
|
|
console.warn('please set canvasId or ctx!');
|
|
return;
|
|
}
|
|
|
|
createCanvas();
|
|
|
|
function createCanvas() {
|
|
// create the qrcode itself
|
|
var qrcode = new QRCode(options.typeNumber, options.correctLevel);
|
|
qrcode.addData(utf16to8(options.text));
|
|
qrcode.make();
|
|
|
|
// get canvas context
|
|
var ctx;
|
|
if (options.ctx) {
|
|
ctx = options.ctx;
|
|
} else {
|
|
ctx = options._this ? wx.createCanvasContext && wx.createCanvasContext(options.canvasId, options._this) : wx.createCanvasContext && wx.createCanvasContext(options.canvasId);
|
|
}
|
|
|
|
// compute tileW/tileH based on options.width/options.height
|
|
var tileW = options.width / qrcode.getModuleCount();
|
|
var tileH = options.height / qrcode.getModuleCount();
|
|
|
|
// draw in the canvas
|
|
for (var row = 0; row < qrcode.getModuleCount(); row++) {
|
|
for (var col = 0; col < qrcode.getModuleCount(); col++) {
|
|
var style = qrcode.isDark(row, col) ? options.foreground : options.background;
|
|
ctx.setFillStyle(style);
|
|
var w = Math.ceil((col + 1) * tileW) - Math.floor(col * tileW);
|
|
var h = Math.ceil((row + 1) * tileW) - Math.floor(row * tileW);
|
|
ctx.fillRect(Math.round(col * tileW) + options.x, Math.round(row * tileH) + options.y, w, h);
|
|
}
|
|
}
|
|
|
|
if (options.image.imageResource) {
|
|
ctx.drawImage(options.image.imageResource, options.image.dx, options.image.dy, options.image.dWidth, options.image.dHeight);
|
|
}
|
|
|
|
ctx.draw(false, function (e) {
|
|
options.callback && options.callback(e);
|
|
});
|
|
}
|
|
}
|
|
|
|
return drawQrcode;
|
|
|
|
})));
|