1506 lines
63 KiB
JavaScript
1506 lines
63 KiB
JavaScript
; var QSCanvas = (function () {
|
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const platform = getPlatform(), isUni = platform == 'uni', isNode = platform == 'node',
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isWeb = platform == 'web', imgCache = {}, vmCache = {},
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asyncDrawWhiteList = Object.freeze(['init', 'initAsyncDrawMode', 'initArgs', 'initCanvas', 'handleCtx', 'initData',
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'draw', 'toImage', 'updateCanvasWH', 'clear', 'restoreAsyncDrawMode']),
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calcMethods = Object.freeze(['setPaintbrush', 'setPaintbrushProp', 'resetPaintbrush', 'savePaintbrush',
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'restorePaintbrush', 'calcText', 'calcImg', 'measureText', 'loadImage']),
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asyncDrawMethods = Object.freeze(['setPaintbrush', 'setPaintbrushProp', 'resetPaintbrush', 'savePaintbrush',
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'restorePaintbrush', 'drawText', 'drawStraightLine', 'drawDoubleStraightLine', 'drawDotted',
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'drawDottedStraightLine', 'drawLine', 'drawTextDecoration', 'drawImg', 'drawQrCode', 'setCircle', 'setRect']),
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allSelfMethods = Object.freeze(['setPaintbrush', 'setPaintbrushProp', 'resetPaintbrush', 'savePaintbrush',
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'restorePaintbrush', 'drawText', 'drawStraightLine', 'drawDoubleStraightLine', 'drawDotted',
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'drawDottedStraightLine', 'drawLine', 'drawTextDecoration', 'drawImg', 'drawQrCode', 'setCircle',
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'setRect', 'calcText', 'calcImg', 'measureText', 'loadImage', 'drawArray', 'drawItem']),
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needReturnMethods = Object.freeze(['drawText', 'drawImg']),
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commonMethods = Object.freeze(["drawImage", "putImageData", "getImageData", "createImageData", "addPage", "save",
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"restore", "rotate", "translate", "transform", "getTransform", "resetTransform", "setTransform", "isPointInPath",
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"scale", "clip", "fill", "stroke", "fillText", "strokeText", "fillRect", "strokeRect", "clearRect", "rect",
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"measureText", "moveTo", "lineTo", "bezierCurveTo", "quadraticCurveTo", "beginPath", "closePath", "arc", "arcTo",
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"ellipse", "setLineDash", "getLineDash", "createPattern", "createLinearGradient", "createRadialGradient"])
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let nodeCanvas, id = 1
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// #ifndef APP-PLUS
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// #ifndef H5
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// #ifndef MP
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// #ifndef QUICKAPP-WEBVIEW
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// #ifndef QUICKAPP-WEBVIEW-UNION
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// #ifndef QUICKAPP-WEBVIEW-HUAWEI
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if (isNode) {
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try { nodeCanvas = require('canvas') }
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catch (e) { if (isNode) throw new Error('node环境依赖node-canvas!') }
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}
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// #endif
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// #endif
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// #endif
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// #endif
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// #endif
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// #endif
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/**
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* 判断是否是undefined, uni中的undefined不是字符串
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*/
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function notUnd(t) {
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return String(t) != 'undefined'
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}
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function isNull(a) {
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return !((a || a == 0) && !['undefined', 'null'].includes(String(a)))
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}
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/**
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* 判断环境
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*/
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function getPlatform() {
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if (notUnd(typeof uni)) return 'uni'
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if (notUnd(typeof window) && notUnd(typeof document)) return 'web'
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return 'node'
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}
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/**
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* 获取实例
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*/
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function getCtx(vm, args) {
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if (isUni) {
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if (!args.canvasId) {
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throw new Error('canvasId 不能为空')
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}
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}
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let canvas, obj = {}
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switch (platform) {
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case 'uni':
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canvas = uni.createCanvasContext(args.canvasId, vm)
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obj.canvas = canvas;
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obj.ctx = canvas;
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break
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case 'web':
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canvas = args?.canvasId ? document.getElementById(args?.canvasId) : document.createElement('canvas')
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canvas.width = args?.width || 10
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canvas.height = args?.height || 10
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obj.canvas = canvas
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obj.ctx = canvas.getContext('2d')
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break
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case 'node':
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canvas = nodeCanvas.createCanvas(args?.width || 10, args?.height || 10)
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obj.canvas = canvas
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obj.ctx = canvas.getContext('2d')
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break
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}
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return obj
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}
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class QSCanvas {
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#nc
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constructor(obj, vm) {
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this._id = id++
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vmCache[this._id] = vm
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if(obj) {
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this.init(obj)
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}
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}
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init(obj = {}) {
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this.initArgs(obj).initData().initCanvas().handleCtx().resetPaintbrush()
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if(this._data.asyncDrawMode === true) {
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this.#nc = new QSCanvas({ asyncDrawMode: false })
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this.initAsyncDrawMode()
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}
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}
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initAsyncDrawMode() {
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if(isUni) return
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const ctxMethods = this._data.ctxMethods
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const arr = [...new Set([...allSelfMethods, ...ctxMethods])]
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for(let i = 0; i < arr.length; i++) {
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const item = arr[i]
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this.handleAsyncDrawModeItem(item)
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}
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}
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handleAsyncDrawModeItem(i) {
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if(isUni) return
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if(asyncDrawWhiteList.includes(i)) {
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console.log('白名单跳过')
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return
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}
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if(typeof this[i] == 'function') {
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if(!this._data.nMethods[i]) this._data.nMethods[i] = this[i]
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let _this = this
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this[i] = function () {
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let r
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if(calcMethods.includes(i)) {
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r = _this.#nc[i](...arguments)
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}
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if(r && r !== _this && r !== _this.#nc) return r
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if(asyncDrawMethods.includes(i) || _this._data.ctxMethods.includes(i) ) {
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_this._data.asyncDrawQueue.push({ method: i, args: arguments })
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}
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if(needReturnMethods.includes(i)) {
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return _this.#nc[i](...arguments)
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}
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}
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}
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}
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restoreAsyncDrawMode() {
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if(isUni) return
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const nMethods = this._data.nMethods
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for(const i in nMethods) {
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this[i] = nMethods[i]
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}
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}
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initArgs(obj = {}) {
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this._args = obj
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return this
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}
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initCanvas() {
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const canvasObj = getCtx(vmCache[this._id], this._args)
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this.canvas = canvasObj.canvas
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this.ctx = canvasObj.ctx
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return this
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}
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/**
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* 使QSCanvas拥有原有方法
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*/
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handleCtx() {
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const ctx = this.ctx
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const active = (i)=>{
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this._data.ctxMethods.push(i)
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this[i] =
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ctx[i].bind(ctx)
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return
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function a() {
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return ctx[i](...arguments)
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}
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}
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for (const i in ctx) {
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if (typeof ctx[i] == 'function') {
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if (!this[i]) {
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active(i)
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}
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}
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}
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for(let k = 0; k < commonMethods.length; k++) {
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const i = commonMethods[k]
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if (typeof ctx[i] == 'function') {
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if (!this[i]) {
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active(i)
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}
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}
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}
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return this
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}
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initData() {
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this._data = {
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oldPaintbrushProps: {}, savedPaintbrushProps: [],
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font: { fontStyle: 'normal', fontVariant: 'normal', fontWeight: 'normal', fontSize: 10, fontFamily: 'sans-serif' },
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height: this._args.height || 10, width: this._args.width || 10,
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whChange: false,
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asyncDrawQueue: [],
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nMethods: {},
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asyncDrawMode: (isNode || isWeb)?this._args.asyncDrawMode !== false:false,
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ctxMethods: []
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}
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return this
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}
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/**
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* 设置画笔
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*/
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setPaintbrush(obj = {}) {
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filterPaintbrushProps(obj);
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for (const k in obj) {
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this.setPaintbrushProp(k, obj[k])
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}
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return this
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}
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/**
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* 设置画笔操作兼容uni
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*/
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setPaintbrushProp(prop, data) {
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if (isNull(prop) || isNull(data)) return;
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prop = hyphen2Hump(prop)
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const ctx = this.ctx;
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if (prop == 'font') {
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if (data) {
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if (typeof data != 'object') {
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console.warn('font属性需Object格式')
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return
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}
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for (const k in data) if (isNull(data[k])) delete (data[k])
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const font = { ...this._data.font, ...data }
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if(isUni) font.fontSize = Math.round(font.fontSize)
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this._data.font = font
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const f = this._data.font
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this._data.oldPaintbrushProps[prop] = f;
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const setFont = ()=>{
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ctx.font = `${f.fontStyle || 'normal'} ${f.fontVariant || 'normal'} ${f.fontWeight || 'normal'} ${f.fontSize ?? 10}px ${f.fontFamily || 'sans-serif'}`
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}
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if(isUni) {
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// #ifdef MP-TOUTIAO
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ctx.setFontSize(f.fontSize)
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// #endif
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// #ifndef MP-TOUTIAO
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setFont()
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// #endif
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}else setFont()
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}
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} else {
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this._data.oldPaintbrushProps[prop] = data;
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const fnn = 'set' + prop[0].toUpperCase() + prop.slice(1);
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if (typeof ctx?.[fnn] == 'function') {
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ctx[fnn](data);
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}
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else {
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ctx[prop] = data;
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}
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}
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return this
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}
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/**
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* 重置画笔
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*/
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resetPaintbrush(obj = {}) {
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this.setPaintbrush({
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fillStyle: '#000000',
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strokeStyle: '#000000',
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shadowColor: '#000000',
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shadowBlur: 0,
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shadowOffsetX: 0,
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shadowOffsetY: 0,
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lineCap: 'butt',
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lineJoin: 'miter',
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lineWidth: 1,
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miterLimit: 10,
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font: this._data.font,
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textAlign: 'start',
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textBaseline: 'top',
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globalAlpha: 1.0,
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globalCompositeOperation: 'source-over',
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...obj
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})
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return this
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}
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saveAndSetPaintbrush(paintbrushProps = {}) {
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this.savePaintbrush()
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this.setPaintbrush(paintbrushProps)
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return this
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}
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/**
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* 保存画笔设置
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*/
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savePaintbrush() {
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this._data.savedPaintbrushProps.unshift({ ...this._data.oldPaintbrushProps })
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return this
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}
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/**
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* 恢复上次保存的画笔设置
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*/
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restorePaintbrush() {
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const savedProps = this._data.savedPaintbrushProps.shift()
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if (savedProps) this._data.oldPaintbrushProps = { ...this._data.oldPaintbrushProps, ...savedProps }
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this.resetPaintbrush({ ...this._data.oldPaintbrushProps })
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return this
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}
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/**
|
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* 更新画布宽高
|
||
*/
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updateCanvasWH(obj = {}) {
|
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let { width, height, delay } = obj, setCanvasWH = this._args?.setCanvasWH
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width = width || this._data?.width || 10
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height = height || this._data?.height || 10
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||
return new Promise((rs, rj) => {
|
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if (isUni) {
|
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if (!setCanvasWH || typeof setCanvasWH != 'function') {
|
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rj('setCanvasWH异常, uni-app 请在初始化时传入setCanvasWH函数')
|
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return
|
||
}
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setCanvasWH({ height, width })
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setTimeout(() => {
|
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rs()
|
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}, delay ?? 50)
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} else {
|
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this.canvas.height = height
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this.canvas.width = width
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rs()
|
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}
|
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}).then(r => {
|
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if (this._data.width != width || this._data.height != height) {
|
||
this._data.whChange = true
|
||
}
|
||
this._data.width = width
|
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this._data.height = height
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if(!this._data.asyncDrawMode) this.resetPaintbrush(this._data.oldPaintbrushProps)
|
||
})
|
||
}
|
||
|
||
/**
|
||
* 清除画布内容
|
||
*/
|
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clear() {
|
||
this.ctx.clearRect(0, 0, this._data.width || 999999, this._data.height || 999999)
|
||
return this
|
||
}
|
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|
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/**
|
||
* 兼容uni draw
|
||
*/
|
||
draw(obj = {}) {
|
||
const { reserve } = obj
|
||
return new Promise((rs, rj) => {
|
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if (isUni) {
|
||
let done = false
|
||
const settimeoutkey = setTimeout(()=>{
|
||
if(!done) {
|
||
rs()
|
||
}else{
|
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clearTimeout(settimeoutkey)
|
||
}
|
||
}, 3000)
|
||
this.ctx.draw(reserve ?? false, ()=>{
|
||
done = true
|
||
clearTimeout(settimeoutkey)
|
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rs()
|
||
})
|
||
} else {
|
||
if(this._data.asyncDrawMode) {
|
||
if(reserve !== true) this.clear()
|
||
this.restoreAsyncDrawMode()
|
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this.resetPaintbrush()
|
||
const arr = this._data.asyncDrawQueue
|
||
new Promise(async(resolve, reject)=>{
|
||
for(let i = 0; i < arr.length; i++) {
|
||
const item = arr[i]
|
||
try {
|
||
const r = this[item.method].call(this, ...item.args)
|
||
if(typeof r?.then == 'function') await r
|
||
} catch (error) {
|
||
reject(error)
|
||
return
|
||
}
|
||
}
|
||
resolve()
|
||
})
|
||
.then(()=>{
|
||
this._data.asyncDrawQueue = []
|
||
this.initAsyncDrawMode()
|
||
rs()
|
||
})
|
||
.catch(err=>{
|
||
this.initAsyncDrawMode()
|
||
rj(err)
|
||
})
|
||
}else{
|
||
rs()
|
||
}
|
||
}
|
||
})
|
||
}
|
||
|
||
/**
|
||
* canvas2image
|
||
*/
|
||
toImage(obj = {}) {
|
||
return new Promise((rs, rj) => {
|
||
if (isUni) {
|
||
const canvasId = this._args.canvasId
|
||
if (!canvasId) {
|
||
rj('canvasId不存在')
|
||
return
|
||
}
|
||
uni.canvasToTempFilePath({
|
||
...obj,
|
||
canvasId: canvasId,
|
||
success: r => {
|
||
obj.success?.(r)
|
||
rs(r.tempFilePath)
|
||
},
|
||
fail: err => {
|
||
obj.fail?.(err)
|
||
rj(err)
|
||
}
|
||
}, vmCache[this._id])
|
||
} else {
|
||
rs(this.canvas.toDataURL(`image/${['jpg', 'jpeg'].includes(obj.fileType) ? 'jpeg' : 'png'
|
||
}`, obj.quality ?? 1))
|
||
}
|
||
})
|
||
}
|
||
|
||
/**
|
||
* 计算文字多行
|
||
*/
|
||
calcText(obj = {}) {
|
||
const line = obj.line || -1
|
||
return new Promise((rs, rj) => {
|
||
try {
|
||
this.saveAndSetPaintbrush({
|
||
...(obj.paintbrushProps || {})
|
||
})
|
||
const mt = this.measureText
|
||
let splitTexts = [], str = obj.val, width = 0
|
||
function run(text, endLine) {
|
||
let endLineWidth = 0
|
||
const textWidth = mt(text).width
|
||
if (endLine) {
|
||
if (textWidth < obj.maxWidth || text.length < 2) {
|
||
return { index: text.length, ellipsis: false, width: textWidth }
|
||
}else{
|
||
endLineWidth = mt('...').width
|
||
}
|
||
}
|
||
const textWidthEndLineWidth = textWidth + endLineWidth
|
||
if (textWidthEndLineWidth < obj.maxWidth || text.length < 2) {
|
||
return { index: text.length, ellipsis: false, width: textWidthEndLineWidth }
|
||
}
|
||
let loop = true, mid = Math.floor((text.length + 1) / 2), oldMid = 1, mode = '', tw
|
||
while (loop) {
|
||
if (mid <= 1) {
|
||
loop = false
|
||
break
|
||
}
|
||
if (mid > text.length) {
|
||
mid = text.length
|
||
loop = false
|
||
break
|
||
}
|
||
const t = text.substr(0, mid)
|
||
tw = mt(t).width + endLineWidth
|
||
if (tw > obj.maxWidth) {
|
||
text = t
|
||
if ((mode == 'xy' && Math.abs(oldMid - mid) < 1)) {
|
||
loop = false
|
||
} else {
|
||
mode = 'dy'
|
||
oldMid = mid
|
||
mid = Math.floor((t.length + 1) / 2)
|
||
}
|
||
} else if (tw == obj.maxWidth) {
|
||
loop = false
|
||
} else {
|
||
if (mid <= 1 || (Math.abs(oldMid - mid) < 1)) {
|
||
loop = false
|
||
} else {
|
||
mode = 'xy'
|
||
oldMid = mid
|
||
mid += Math.floor((text.length - mid) / 2)
|
||
}
|
||
}
|
||
}
|
||
return { index: mid, ellipsis: endLine, width: tw }
|
||
}
|
||
const font = {...this._data.font}
|
||
if(obj.maxWidth) {
|
||
let i = 0
|
||
while (str.length) {
|
||
const endLine = line > 0 && splitTexts.length + 1 >= line, {index:len, ellipsis, width} = run(str, endLine);
|
||
const txt = str.substr(0, len)
|
||
splitTexts.push({ ...obj, val: txt, y: i ? obj.y + (font.fontSize + (obj.lineHeight || 0)) * i : obj.y, width })
|
||
if (endLine) {
|
||
if(ellipsis)splitTexts[splitTexts.length - 1].val += '...'
|
||
str = ''
|
||
}
|
||
else
|
||
str = str.slice(len)
|
||
|
||
i++
|
||
}
|
||
width = splitTexts.length == 1?splitTexts[0].width:splitTexts.length > 1?obj.maxWidth:0
|
||
}else{
|
||
splitTexts = [obj]
|
||
width = mt(obj.val).width
|
||
}
|
||
this.restorePaintbrush()
|
||
rs({
|
||
...obj, calcTexts: splitTexts, _calc: true,
|
||
left: obj.x, top: obj.y, right: obj.x + width, bottom: (splitTexts[splitTexts.length - 1].y + font.fontSize),
|
||
width: width, height: (splitTexts[splitTexts.length - 1].y + font.fontSize) - obj.y , fontSize: font.fontSize
|
||
})
|
||
} catch (error) {
|
||
rj(error)
|
||
}
|
||
})
|
||
}
|
||
|
||
/* 绘制 */
|
||
|
||
/**
|
||
* 绘制文本
|
||
*/
|
||
drawText(obj = {}) {
|
||
return new Promise(async (rs, rj) => {
|
||
try {
|
||
if (!obj.val) {
|
||
console.warn(`需绘制的文本为空`)
|
||
rs()
|
||
return
|
||
}
|
||
this.saveAndSetPaintbrush({
|
||
...(obj.paintbrushProps || {})
|
||
})
|
||
const ft = (obj) => {
|
||
this.fillText(obj.val, obj.x, obj.y)
|
||
},
|
||
ftItem = (item) => {
|
||
ft(item)
|
||
if (item.textDecoration) this.drawTextDecoration(item)
|
||
}
|
||
|
||
const calcR = obj._calc?obj:await this.calcText(obj)
|
||
for (let i = 0; i < calcR.calcTexts.length; i++) {
|
||
ftItem(calcR.calcTexts[i])
|
||
}
|
||
this.restorePaintbrush()
|
||
rs(calcR)
|
||
} catch (error) {
|
||
rj(error)
|
||
}
|
||
})
|
||
}
|
||
|
||
drawStraightLine(obj = {}) {
|
||
const { x1, y1, x2, y2, paintbrushProps } = obj, ctx = this.ctx
|
||
ctx.beginPath()
|
||
ctx.moveTo(x1, y1)
|
||
ctx.lineTo(x2, y2)
|
||
this.saveAndSetPaintbrush(paintbrushProps || {})
|
||
ctx.stroke()
|
||
this.restorePaintbrush()
|
||
}
|
||
|
||
drawDoubleStraightLine(obj = {}) {
|
||
let { gap } = obj
|
||
gap = gap ?? 1
|
||
this.drawStraightLine(obj)
|
||
this.drawStraightLine({ ...obj, y1: obj.y1 + gap, y2: obj.y2 + gap })
|
||
}
|
||
|
||
drawDotted(obj = {}) {
|
||
this.setCircle(obj)
|
||
if(obj.clip) obj.clip = false
|
||
this.saveAndSetPaintbrush(obj.paintbrushProps || {})
|
||
this.ctx.fill()
|
||
this.restorePaintbrush()
|
||
}
|
||
|
||
drawDottedStraightLine(obj = {}) {
|
||
let { x1, x2, y1, y2, gap, width, paintbrushProps } = obj
|
||
x2 = x2 - width
|
||
gap = gap || 1
|
||
const len = Math.sqrt(Math.pow(x1 - x2, 2) + Math.pow(y1 - y2, 2))
|
||
const points = getPoints(x1, y1, x2, y2, Math.floor((len - gap) / (width + gap)), 9999999999)
|
||
this.saveAndSetPaintbrush(paintbrushProps)
|
||
this.drawDotted({ x: x1, y: y1, d: width })
|
||
for (let i = 0; i < points.length; i++)
|
||
this.drawDotted({ x: points[i][0], y: points[i][1], d: width })
|
||
|
||
this.drawDotted({ x: x2, y: y2, d: width })
|
||
this.restorePaintbrush()
|
||
}
|
||
|
||
drawLine(obj = {}) {
|
||
const { style } = obj
|
||
switch (style) {
|
||
case 'double':
|
||
obj.gap = (obj.width || 1) * 1.5
|
||
this.drawDoubleStraightLine(obj)
|
||
break
|
||
case 'solide':
|
||
this.drawStraightLine(obj)
|
||
break
|
||
case 'dotted':
|
||
obj.gap = (obj.gap || 1) * 1.5
|
||
obj.paintbrushProps = { fillStyle: obj.color }
|
||
this.drawDottedStraightLine(obj)
|
||
break
|
||
}
|
||
}
|
||
|
||
/**
|
||
* {
|
||
...(drawText属性),
|
||
textDecoration: {
|
||
line, //类型 同css text-decoration-line
|
||
color, //线颜色
|
||
width, //线宽度
|
||
* }
|
||
* }
|
||
*/
|
||
drawTextDecoration(obj = {}) {
|
||
this.savePaintbrush()
|
||
const oldProps = this._data.oldPaintbrushProps, tw = this.measureText(obj.val).width, tD = obj.textDecoration, line = tD.line || 'line-through', color = tD.color || obj.color || oldProps.fillStyle || '#000000', width = tD.thickness || tD.width || (obj.fontSize ? obj.fontSize * 0.1 : false) || 1, style = tD.style || 'solide', offset = tD.offset || 0, gap = tD.gap ?? 1, fontSize = (obj.fontSize || this._data.font.fontSize)
|
||
this.setPaintbrush({ lineWidth: width, strokeStyle: color })
|
||
let y = 0
|
||
switch (line) {
|
||
case 'line-through':
|
||
y = obj.y + fontSize / 2 - width / 2
|
||
break
|
||
case 'underline':
|
||
y = obj.y + fontSize
|
||
break
|
||
case 'overline':
|
||
y = obj.y
|
||
break
|
||
}
|
||
switch (oldProps.textBaseline) {
|
||
case 'top':
|
||
y += width / 2
|
||
break
|
||
case 'bottom':
|
||
y -= fontSize
|
||
break
|
||
case 'center':
|
||
y -= fontSize / 2
|
||
break
|
||
}
|
||
y += offset
|
||
switch (line) {
|
||
case 'line-through':
|
||
case 'underline':
|
||
case 'overline':
|
||
this.drawLine({ x1: obj.x, y1: y, x2: obj.x + tw, y2: y, style, gap, width, color })
|
||
break
|
||
}
|
||
this.restorePaintbrush()
|
||
}
|
||
|
||
/**
|
||
* 绘制图片
|
||
*/
|
||
drawImg(obj = {}) {
|
||
return new Promise(async (rs, rj) => {
|
||
try {
|
||
if (!obj.val) {
|
||
console.warn(`需绘制的图片为空`)
|
||
rs()
|
||
return
|
||
}
|
||
const calcR = obj._calc?obj:await this.calcImg(obj)
|
||
if(calcR?.drawImageArgs && Array.isArray(calcR.drawImageArgs)) this.ctx.drawImage(...(calcR?.drawImageArgs || []))
|
||
rs(calcR)
|
||
} catch (error) {
|
||
rj(error)
|
||
}
|
||
})
|
||
}
|
||
|
||
calcImg(obj = {}) {
|
||
return new Promise(async (rs, rj)=>{
|
||
try {
|
||
if (!obj.val) {
|
||
console.warn(`需绘制的图片为空`)
|
||
rs()
|
||
return
|
||
}
|
||
const img = await this.loadImage(obj.val), mode = obj.mode || 'scaleToFill'
|
||
let arr, x = obj.x || 0, y = obj.y || 0, w = obj.width || 0, h = obj.height || 0, sw = img.width, sh = img.height, sx = 0, sy = 0
|
||
const get_6 = ()=>{
|
||
if(isUni) {
|
||
// #ifdef MP-BAIDU
|
||
return [x, y, w, h, sx, sy, sw, sh]
|
||
// #endif
|
||
}
|
||
return [sx, sy, sw, sh, x, y, w, h]
|
||
}
|
||
switch(mode) {
|
||
case 'aspectFit':
|
||
h = img.height / img.width * w
|
||
if (h < obj.height) {
|
||
y = Number(obj.y) + obj.height / 2 - h/2
|
||
} else {
|
||
h = obj.height
|
||
w = img.width / img.height * h
|
||
x = Number(obj.x) + obj.width / 2 - w/2
|
||
}
|
||
arr = get_6()
|
||
break
|
||
case 'aspectFill':
|
||
h = img.height / img.width * w
|
||
if (h < obj.height) {
|
||
h = obj.height
|
||
sx = img.width / img.height * obj.height
|
||
sx = (sx - obj.width) / sx * img.width / 2
|
||
sw = img.width - sx * 2
|
||
} else {
|
||
sy = (h - obj.height) / h * img.height / 2
|
||
sh = img.height - sy * 2
|
||
}
|
||
w = obj.width
|
||
h = obj.height
|
||
arr = get_6()
|
||
break
|
||
case 'widthFix':
|
||
h = obj.height = img.height / img.width * obj.width
|
||
arr = [x, y, w, h]
|
||
break
|
||
case 'heightFix':
|
||
w = obj.width = img.width / img.height * obj.height
|
||
arr = [x, y, w, h]
|
||
break
|
||
default:
|
||
arr = [x, y, w, h]
|
||
}
|
||
arr.unshift(isUni ? img.toString() : img)
|
||
rs({ ...obj, drawImageArgs: [...arr], img, left: obj.x, top: obj.y, right: obj.x + obj.width, bottom: obj.y + obj.height, _calc: true })
|
||
} catch (error) {
|
||
rj(error)
|
||
}
|
||
})
|
||
}
|
||
|
||
/**
|
||
* 绘制二维码
|
||
* 诗小柒 的二维码生成器代码
|
||
*/
|
||
drawQrCode(obj = {}) {
|
||
return new Promise((rs, rj) => {
|
||
if (!obj?.val) {
|
||
console.warn("绘制二维码val为空")
|
||
rs()
|
||
return
|
||
}
|
||
this.savePaintbrush()
|
||
let qrcodeAlgObjCache = [];
|
||
let options = {
|
||
text: String(obj.val || '') || '', // 生成内容
|
||
size: Number(obj.size || 0) || 200, // 二维码大小
|
||
background: String(obj.background || '') || '#ffffff', // 背景色
|
||
foreground: String(obj.foreground || '') || '#000000', // 前景色
|
||
pdground: String(obj.pdground || '') || '#000000', // 定位角点颜色
|
||
correctLevel: Number(obj.correctLevel || 0) || 3, // 容错级别
|
||
dx: Number(obj.x || 0) || 0, // x轴距离
|
||
dy: Number(obj.y || 0) || 0 // y轴距离
|
||
}
|
||
let qrCodeAlg = null;
|
||
let d = 0;
|
||
for (var i = 0, l = qrcodeAlgObjCache.length; i < l; i++) {
|
||
d = i;
|
||
if (qrcodeAlgObjCache[i].text == options.text && qrcodeAlgObjCache[i].text.correctLevel == options.correctLevel) {
|
||
qrCodeAlg = qrcodeAlgObjCache[i].obj;
|
||
break;
|
||
}
|
||
}
|
||
if (d == l) {
|
||
qrCodeAlg = new QRCodeAlg(options.text, options.correctLevel);
|
||
qrcodeAlgObjCache.push({
|
||
text: options.text,
|
||
correctLevel: options.correctLevel,
|
||
obj: qrCodeAlg
|
||
});
|
||
}
|
||
let getForeGround = function (config) {
|
||
let 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;
|
||
}
|
||
let count = qrCodeAlg.getModuleCount();
|
||
let ratioSize = options.size;
|
||
let tileW = (ratioSize / count);
|
||
let tileH = (ratioSize / count);
|
||
for (let row = 0; row < count; row++) {
|
||
for (let col = 0; col < count; col++) {
|
||
let w = (((col + 1) * tileW) - (col * tileW));
|
||
let h = (((row + 1) * tileW) - (row * tileW));
|
||
let foreground = getForeGround({
|
||
row: row,
|
||
col: col,
|
||
count: count,
|
||
options: options
|
||
});
|
||
this.setPaintbrush({ fillStyle: qrCodeAlg.modules[row][col] ? foreground : options.background });
|
||
this.ctx.fillRect(options.dx + (col * tileW), options.dy + (row * tileH), w, h);
|
||
}
|
||
}
|
||
this.restorePaintbrush()
|
||
|
||
rs({...obj, height: obj.size, width: obj.size, left: obj.x, top: obj.y, right: obj.x + obj.width, bottom: obj.y + obj.size});
|
||
})
|
||
}
|
||
|
||
/**
|
||
* 圆形
|
||
*/
|
||
setCircle(obj = {}) {
|
||
const ctx = this.ctx
|
||
let { x, y, d, mode } = obj
|
||
mode = mode || 'leftTop'
|
||
const r = d / 2
|
||
if (obj.clip) ctx.save()
|
||
ctx.beginPath();
|
||
switch (mode) {
|
||
case 'leftTop':
|
||
ctx.arc(x + r, y + r, r, 0, 2 * Math.PI);
|
||
break
|
||
case 'center':
|
||
ctx.arc(x, y, r, 0, 2 * Math.PI);
|
||
break
|
||
}
|
||
ctx.closePath();
|
||
if (obj.clip) ctx.clip()
|
||
return this
|
||
}
|
||
|
||
/**
|
||
* 矩形
|
||
*/
|
||
setRect(obj = {}) {
|
||
const ctx = this.ctx
|
||
const { x, y, r, height, width } = obj
|
||
if (obj.clip) ctx.save()
|
||
ctx.beginPath();
|
||
if (r && r > 0) {
|
||
ctx.arc(x + r, y + r, r, 1 * Math.PI, 1.5 * Math.PI);
|
||
ctx.lineTo(x + width - r, y);
|
||
ctx.arc(x + width - r, y + r, r, 1.5 * Math.PI, 0);
|
||
ctx.lineTo(x + width, y + height - r);
|
||
ctx.arc(x + width - r, y + height - r, r, 0, .5 * Math.PI);
|
||
ctx.lineTo(x + r, y + height);
|
||
ctx.arc(x + r, y + height - r, r, .5 * Math.PI, 1 * Math.PI);
|
||
ctx.lineTo(x, y + r);
|
||
} else {
|
||
ctx.moveTo(x, y);
|
||
ctx.lineTo(x + width, y);
|
||
ctx.lineTo(x + width, y + height);
|
||
ctx.lineTo(x, y + height);
|
||
ctx.lineTo(x, y);
|
||
}
|
||
ctx.closePath();
|
||
if (obj.clip) ctx.clip()
|
||
return this
|
||
}
|
||
|
||
/**
|
||
* 加载图片
|
||
*/
|
||
loadImage(url) {
|
||
return new Promise(async (resolve, reject) => {
|
||
if (!url) {
|
||
console.warn('加载图片url为空')
|
||
resolve()
|
||
return
|
||
}
|
||
if (imgCache[url]) {
|
||
resolve(imgCache[url])
|
||
return
|
||
}
|
||
let img
|
||
try {
|
||
switch (platform) {
|
||
case 'uni':
|
||
img = await new Promise((rs, rj) => {
|
||
if (url._loaded) {
|
||
rs(url)
|
||
return
|
||
}
|
||
if(~url.indexOf('data:image')) {
|
||
let tempFilePath = url, imageInfoR = {}
|
||
// #ifndef MP-ALIPAY
|
||
imgTools.base64ToPath(url)
|
||
.then(t=>{
|
||
tempFilePath = t
|
||
// #ifndef MP-BAIDU
|
||
uni.getImageInfo({
|
||
src: tempFilePath,
|
||
success: imgInfo => {
|
||
imageInfoR = imgInfo
|
||
// #endif
|
||
// #endif
|
||
const uniImg = new String(tempFilePath)
|
||
for (const i in imageInfoR) uniImg[i] = imageInfoR[i]
|
||
uniImg._loaded = true
|
||
rs(uniImg)
|
||
// #ifndef MP-ALIPAY
|
||
// #ifndef MP-BAIDU
|
||
},
|
||
fail: (err) => rj(err)
|
||
})
|
||
// #endif
|
||
})
|
||
.catch(err=>{
|
||
rj(err)
|
||
})
|
||
// #endif
|
||
}else if(url.substr(0, 4) == 'http'){
|
||
uni.downloadFile({
|
||
url: url,
|
||
success: ({ tempFilePath }) => {
|
||
uni.getImageInfo({
|
||
src: tempFilePath,
|
||
success: imageInfoR => {
|
||
const uniImg = new String(tempFilePath)
|
||
for (const i in imageInfoR) uniImg[i] = imageInfoR[i]
|
||
uniImg._loaded = true
|
||
rs(uniImg)
|
||
},
|
||
fail: (err) => rj(err)
|
||
})
|
||
},
|
||
fail: (error) => rj(error)
|
||
})
|
||
}else{
|
||
uni.getImageInfo({
|
||
src: url,
|
||
success: imageInfoR => {
|
||
const uniImg = new String(url)
|
||
for (const i in imageInfoR) uniImg[i] = imageInfoR[i]
|
||
uniImg._loaded = true
|
||
rs(uniImg)
|
||
},
|
||
fail: (err) => rj(err)
|
||
})
|
||
}
|
||
});
|
||
break
|
||
case 'web':
|
||
img = await new Promise((rs, rj) => {
|
||
/* url instanceof Image */
|
||
if (typeof url != 'string') {
|
||
rs(url)
|
||
return
|
||
}
|
||
// node 也可以用这种方式
|
||
const imgObj = new Image()
|
||
imgObj.onload = () => {
|
||
rs(imgObj)
|
||
}
|
||
imgObj.onerror = err => {
|
||
rj(err)
|
||
}
|
||
imgObj.src = url
|
||
})
|
||
break
|
||
case 'node':
|
||
img = await new Promise((rs, rj) => {
|
||
/* url instanceof nodeCanvas.Image */
|
||
if (typeof url != 'string') {
|
||
rs(url)
|
||
return
|
||
}
|
||
nodeCanvas.loadImage(url)
|
||
.then(res => {
|
||
rs(res)
|
||
})
|
||
.catch(err => {
|
||
rj(err)
|
||
})
|
||
})
|
||
break
|
||
}
|
||
} catch (error) {
|
||
reject(error)
|
||
}
|
||
imgCache[url] = img
|
||
resolve(img)
|
||
})
|
||
}
|
||
|
||
drawArray(data) {
|
||
return new Promise(async (rs, rj)=>{
|
||
try {
|
||
if(!data) {
|
||
rj('drawArray需绘制参数不存在')
|
||
return
|
||
}
|
||
if(!Array.isArray(data)) {
|
||
rj('drawArray参数需要是Array')
|
||
return
|
||
}
|
||
|
||
data = [...data].sort((a, b)=>(a?.zIndex ?? 0) - (b?.zIndex ?? 0))
|
||
const arr = []
|
||
for(let i = 0; i < data.length; i++) {
|
||
const item = data[i]
|
||
let r
|
||
switch(typeof item) {
|
||
case 'function':
|
||
r = item()
|
||
if(typeof r?.then == 'function') r = await r
|
||
break
|
||
case 'object':
|
||
if(Array.isArray(item)) r = await this.drawArray(item)
|
||
else r = await this.drawItem(item)
|
||
break
|
||
}
|
||
arr.push({ item: item, result: r})
|
||
}
|
||
rs(arr)
|
||
} catch (error) {
|
||
rj(error)
|
||
}
|
||
})
|
||
}
|
||
|
||
drawItem(obj = {}) {
|
||
return new Promise(async (rs, rj)=>{
|
||
try {
|
||
let r
|
||
switch(obj.type) {
|
||
case 'text':
|
||
r = await this.drawText(obj)
|
||
break
|
||
case 'image':
|
||
r = await this.drawImg(obj)
|
||
break
|
||
case 'qrcode':
|
||
r = await this.drawQrCode(obj)
|
||
break
|
||
case 'method':
|
||
r = this[obj.name]?.(...(obj.data?Array.isArray(obj.data)?obj.data:[obj.data]:[]))
|
||
if(typeof r?.then == 'function') r = await r
|
||
break
|
||
case 'function':
|
||
r = obj.val?.()
|
||
if(typeof r?.then == 'function') r = await r
|
||
break
|
||
}
|
||
rs(r)
|
||
} catch (error) {
|
||
rj(error)
|
||
}
|
||
})
|
||
}
|
||
|
||
drawRichText(html) {
|
||
return new Promise(async (rs, rj)=>{
|
||
if(!html) {
|
||
rj('drawRichText需绘制参数不存在')
|
||
return
|
||
}
|
||
if(typeof html == 'string') html = htmlParse(html)
|
||
const result = []
|
||
function run(arr, parent) {
|
||
return new Promise(async (res, rej)=>{
|
||
for(let i = 0; i < arr.length; i++) {
|
||
const item = arr[i]
|
||
|
||
if(item.type == 'text') {
|
||
|
||
}else{
|
||
switch(item.name) {
|
||
case 'img':
|
||
|
||
break
|
||
}
|
||
}
|
||
|
||
|
||
result.push(item)
|
||
|
||
if(item.children?.length) {
|
||
item.__handle = function(obj) {
|
||
|
||
}
|
||
try {
|
||
await run(item.children, item)
|
||
} catch (error) {
|
||
rej(error)
|
||
return
|
||
}
|
||
}
|
||
}
|
||
res(result)
|
||
})
|
||
}
|
||
|
||
try {
|
||
rs({ html: html, htmlParses: await run(html) })
|
||
} catch (error) {
|
||
rj(error)
|
||
}
|
||
})
|
||
}
|
||
}
|
||
|
||
|
||
function filterPaintbrushProps(obj) {
|
||
switch (obj?.textBaseline) {
|
||
case 'normal':
|
||
if (isUni) obj.textBaseline = 'alphabetic'
|
||
break
|
||
case 'hanging':
|
||
if (isUni) obj.textBaseline = 'top'
|
||
break
|
||
case 'ideographic':
|
||
if (isUni) obj.textBaseline = 'bottom'
|
||
break
|
||
}
|
||
|
||
switch (obj?.textAlign) {
|
||
case 'start':
|
||
obj.textAlign = 'left'
|
||
break
|
||
case 'end':
|
||
obj.textAlign = 'right'
|
||
break
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 驼峰转连字符
|
||
*/
|
||
function hump2Hyphen(s) {
|
||
return s.replace(/([A-Z])/g, '-$1').toLowerCase()
|
||
}
|
||
|
||
/**
|
||
* 连字符转驼峰
|
||
*/
|
||
function hyphen2Hump(s) {
|
||
if(!s) return ''
|
||
const arr= s.split("-");
|
||
for(var i=1;i<arr.length;i++){
|
||
arr[i]=arr[i].charAt(0).toUpperCase()+arr[i].substring(1);
|
||
}
|
||
return arr.join("");
|
||
}
|
||
|
||
/**
|
||
* 原文链接：https://blog.csdn.net/kingviewer/article/details/120346353
|
||
* 获取指定两点间圆弧上的点
|
||
* @param x1 起点经度
|
||
* @param y1 起点纬度
|
||
* @param x2 终点经度
|
||
* @param y2 终点纬度
|
||
* @param pointCount 要获取的点的数量
|
||
* @param level 弧度大小标定值，0~∞ 0为半圆，越大越接近直线
|
||
* @returns {*[x, y]} 从起点到终点的顺序排列的结果点经纬度数组
|
||
*/
|
||
function getPoints(x1, y1, x2, y2, pointCount, level) {
|
||
let a, b, rSquare, k, kv, points = [];
|
||
if (x1 === x2) {
|
||
a = x1 + (y2 - y1) * level
|
||
b = y1 + (y2 - y1) / 2;
|
||
rSquare = (x1 - a) ** 2 + (y1 - b) ** 2;
|
||
} else if (y1 === y2) {
|
||
a = x1 + (x2 - x1) / 2;
|
||
b = y1 - (x2 - x1) * level
|
||
rSquare = (x1 - a) ** 2 + (y1 - b) ** 2;
|
||
} else {
|
||
let xc = (x1 + x2) / 2, yc = (y1 + y2) / 2,
|
||
lenSquare = ((x2 - x1) ** 2 + (y2 - y1) ** 2) * (level ** 2);
|
||
k = (x2 - x1) / (y1 - y2);
|
||
let l = yc - k * xc;
|
||
let a1 = 1 + k ** 2, b1 = 2 * k * (l - yc) - 2 * xc, c1 = xc ** 2 + (l - yc) ** 2 - lenSquare;
|
||
kv = -1 / k;
|
||
a = (-b1 + Math.sqrt(b1 ** 2 - 4 * a1 * c1) * ((kv > 0 && x2 > x1 || kv < 0 && x2 < x1) ? 1 : -1)) / (2 * a1);
|
||
b = k * a + l;
|
||
rSquare = (x1 - a) ** 2 + (y1 - b) ** 2;
|
||
}
|
||
|
||
if (x1 === x2 || Math.abs(kv) > 1) {
|
||
let yDistance = y2 - y1;
|
||
let yDis = yDistance / (pointCount + 1);
|
||
for (let i = 0; i < pointCount; i++) {
|
||
let y = y1 + yDis * (i + 1);
|
||
let x = Math.sqrt(rSquare - (y - b) ** 2) * (y2 > y1 ? -1 : 1) + a;
|
||
points.push([x, y]);
|
||
}
|
||
} else {
|
||
let xDistance = x2 - x1;
|
||
let xDis = xDistance / (pointCount + 1);
|
||
for (let i = 0; i < pointCount; i++) {
|
||
let x = x1 + xDis * (i + 1);
|
||
let y = Math.sqrt(rSquare - (x - a) ** 2) * (x2 > x1 ? 1 : -1) + b;
|
||
points.push([x, y]);
|
||
}
|
||
}
|
||
|
||
return points;
|
||
}
|
||
|
||
var QRCodeAlg = (function () {
|
||
function unicodeFormat8(code) { var c0, c1, c2; if (code < 128) { return [code] } else if (code < 2048) { c0 = 192 + (code >> 6); c1 = 128 + (code & 63); return [c0, c1] } else { c0 = 224 + (code >> 12); c1 = 128 + (code >> 6 & 63); c2 = 128 + (code & 63); return [c0, c1, c2] } } 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 } function QRCodeAlg(data, errorCorrectLevel) { this.typeNumber = -1; this.errorCorrectLevel = errorCorrectLevel; this.modules = null; this.moduleCount = 0; this.dataCache = null; this.rsBlocks = null; this.totalDataCount = -1; this.data = data; this.utf8bytes = getUTF8Bytes(data); this.make() } QRCodeAlg.prototype = { constructor: QRCodeAlg, getModuleCount: function () { return this.moduleCount }, make: function () { this.getRightType(); this.dataCache = this.createData(); this.createQrcode() }, 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) }, 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 } } } }, 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) } }, 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) } }, 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; this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod } }, setupTypeInfo: function (test, maskPattern) { var data = (QRErrorCorrectLevel[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 } 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) }, createData: function () { var buffer = new QRBitBuffer(); var lengthBits = this.typeNumber > 9 ? 16 : 8; buffer.put(4, 4); 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) } while (buffer.length % 8 != 0) { buffer.putBit(false) } 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) }, 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 }, 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 } } } } }; QRCodeAlg.PAD0 = 0xEC; QRCodeAlg.PAD1 = 0x11; var QRErrorCorrectLevel = [1, 0, 3, 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 }, 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]; 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 } } } } 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 } } if (head ^ current) { sameCount++ } else { head = current; if (sameCount >= 5) { lostPoint += (3 + sameCount - 5) } sameCount = 1 } 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]; 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 } } } } if (head ^ current) { sameCount++ } else { head = current; if (sameCount >= 5) { lostPoint += (3 + sameCount - 5) } sameCount = 1 } } } 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) { 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) } }; var 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]]; 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 } } }; 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++ } };
|
||
|
||
return QRCodeAlg
|
||
})()
|
||
|
||
var htmlParse = (function () {
|
||
var startTag=/^<([-A-Za-z0-9_]+)((?:\s+[a-zA-Z_:][-a-zA-Z0-9_:.]*(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*)\s*(\/?)>/;var endTag=/^<\/([-A-Za-z0-9_]+)[^>]*>/;var attr=/([a-zA-Z_:][-a-zA-Z0-9_:.]*)(?:\s*=\s*(?:(?:"((?:\\.|[^"])*)")|(?:'((?:\\.|[^'])*)')|([^>\s]+)))?/g;var empty=makeMap('area,base,basefont,br,col,frame,hr,img,input,link,meta,param,embed,command,keygen,source,track,wbr');var block=makeMap('a,address,article,applet,aside,audio,blockquote,button,canvas,center,dd,del,dir,div,dl,dt,fieldset,figcaption,figure,footer,form,frameset,h1,h2,h3,h4,h5,h6,header,hgroup,hr,iframe,isindex,li,map,menu,noframes,noscript,object,ol,output,p,pre,section,script,table,tbody,td,tfoot,th,thead,tr,ul,video');var inline=makeMap('abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,code,del,dfn,em,font,i,iframe,img,input,ins,kbd,label,map,object,q,s,samp,script,select,small,span,strike,strong,sub,sup,textarea,tt,u,var');var closeSelf=makeMap('colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr');var fillAttrs=makeMap('checked,compact,declare,defer,disabled,ismap,multiple,nohref,noresize,noshade,nowrap,readonly,selected');var special=makeMap('script,style');function HTMLParser(html,handler){var index;var chars;var match;var stack=[];var last=html;stack.last=function(){return this[this.length-1];};while(html){chars=true;if(!stack.last()||!special[stack.last()]){if(html.indexOf('<!--')==0){index=html.indexOf('-->');if(index>=0){if(handler.comment){handler.comment(html.substring(4,index));}
|
||
html=html.substring(index+3);chars=false;}}else if(html.indexOf('</')==0){match=html.match(endTag);if(match){html=html.substring(match[0].length);match[0].replace(endTag,parseEndTag);chars=false;}}else if(html.indexOf('<')==0){match=html.match(startTag);if(match){html=html.substring(match[0].length);match[0].replace(startTag,parseStartTag);chars=false;}}
|
||
if(chars){index=html.indexOf('<');var text=index<0?html:html.substring(0,index);html=index<0?'':html.substring(index);if(handler.chars){handler.chars(text);}}}else{html=html.replace(new RegExp('([\\s\\S]*?)<\/'+stack.last()+'[^>]*>'),function(all,text){text=text.replace(/<!--([\s\S]*?)-->|<!\[CDATA\[([\s\S]*?)]]>/g,'$1$2');if(handler.chars){handler.chars(text);}
|
||
return'';});parseEndTag('',stack.last());}
|
||
if(html==last){throw'Parse Error: '+html;}
|
||
last=html;}
|
||
parseEndTag();function parseStartTag(tag,tagName,rest,unary){tagName=tagName.toLowerCase();if(block[tagName]){while(stack.last()&&inline[stack.last()]){parseEndTag('',stack.last());}}
|
||
if(closeSelf[tagName]&&stack.last()==tagName){parseEndTag('',tagName);}
|
||
unary=empty[tagName]||!!unary;if(!unary){stack.push(tagName);}
|
||
if(handler.start){var attrs=[];rest.replace(attr,function(match,name){var value=arguments[2]?arguments[2]:arguments[3]?arguments[3]:arguments[4]?arguments[4]:fillAttrs[name]?name:'';attrs.push({name:name,value:value,escaped:value.replace(/(^|[^\\])"/g,'$1\\\"')});});if(handler.start){handler.start(tagName,attrs,unary);}}}
|
||
function parseEndTag(tag,tagName){if(!tagName){var pos=0;}
|
||
else{for(var pos=stack.length-1;pos>=0;pos--){if(stack[pos]==tagName){break;}}}
|
||
if(pos>=0){for(var i=stack.length-1;i>=pos;i--){if(handler.end){handler.end(stack[i]);}}
|
||
stack.length=pos;}}}
|
||
function makeMap(str){var obj={};var items=str.split(',');for(var i=0;i<items.length;i++){obj[items[i]]=true;}
|
||
return obj;}
|
||
function removeDOCTYPE(html){return html.replace(/<\?xml.*\?>\n/,'').replace(/<!doctype.*>\n/,'').replace(/<!DOCTYPE.*>\n/,'');}
|
||
function parseAttrs(attrs){return attrs.reduce(function(pre,attr){var value=attr.value;var name=attr.name;if(pre[name]){pre[name]=pre[name]+" "+value;}else{pre[name]=value;}
|
||
return pre;},{});}
|
||
function parseHtml(html){html=removeDOCTYPE(html);var stacks=[];var results={node:'root',children:[]};HTMLParser(html,{start:function start(tag,attrs,unary){var node={name:tag};if(attrs.length!==0){node.attrs=parseAttrs(attrs);}
|
||
if(unary){var parent=stacks[0]||results;if(!parent.children){parent.children=[];}
|
||
parent.children.push(node);}else{stacks.unshift(node);}},end:function end(tag){var node=stacks.shift();if(node.name!==tag)console.error('invalid state: mismatch end tag');if(stacks.length===0){results.children.push(node);}else{var parent=stacks[0];if(!parent.children){parent.children=[];}
|
||
parent.children.push(node);}},chars:function chars(text){var node={type:'text',text:text};if(stacks.length===0){results.children.push(node);}else{var parent=stacks[0];if(!parent.children){parent.children=[];}
|
||
parent.children.push(node);}},comment:function comment(text){var node={node:'comment',text:text};var parent=stacks[0];if(!parent.children){parent.children=[];}
|
||
parent.children.push(node);}});return results.children;}
|
||
return parseHtml;
|
||
})()
|
||
|
||
var imgTools = (function () {
|
||
function getLocalFilePath(path) {
|
||
if (path.indexOf('_www') === 0 || path.indexOf('_doc') === 0 || path.indexOf('_documents') === 0 || path.indexOf('_downloads') === 0) {
|
||
return path
|
||
}
|
||
if (path.indexOf('file://') === 0) {
|
||
return path
|
||
}
|
||
if (path.indexOf('/storage/emulated/0/') === 0) {
|
||
return path
|
||
}
|
||
if (path.indexOf('/') === 0) {
|
||
var localFilePath = plus.io.convertAbsoluteFileSystem(path)
|
||
if (localFilePath !== path) {
|
||
return localFilePath
|
||
} else {
|
||
path = path.substr(1)
|
||
}
|
||
}
|
||
return '_www/' + path
|
||
}
|
||
|
||
function dataUrlToBase64(str) {
|
||
var array = str.split(',')
|
||
return array[array.length - 1]
|
||
}
|
||
|
||
var index = 0
|
||
function getNewFileId() {
|
||
return Date.now() + String(index++)
|
||
}
|
||
|
||
function biggerThan(v1, v2) {
|
||
var v1Array = v1.split('.')
|
||
var v2Array = v2.split('.')
|
||
var update = false
|
||
for (var index = 0; index < v2Array.length; index++) {
|
||
var diff = v1Array[index] - v2Array[index]
|
||
if (diff !== 0) {
|
||
update = diff > 0
|
||
break
|
||
}
|
||
}
|
||
return update
|
||
}
|
||
|
||
function pathToBase64(path) {
|
||
return new Promise(function(resolve, reject) {
|
||
if (typeof window === 'object' && 'document' in window) {
|
||
if (typeof FileReader === 'function') {
|
||
var xhr = new XMLHttpRequest()
|
||
xhr.open('GET', path, true)
|
||
xhr.responseType = 'blob'
|
||
xhr.onload = function() {
|
||
if (this.status === 200) {
|
||
let fileReader = new FileReader()
|
||
fileReader.onload = function(e) {
|
||
resolve(e.target.result)
|
||
}
|
||
fileReader.onerror = reject
|
||
fileReader.readAsDataURL(this.response)
|
||
}
|
||
}
|
||
xhr.onerror = reject
|
||
xhr.send()
|
||
return
|
||
}
|
||
var canvas = document.createElement('canvas')
|
||
var c2x = canvas.getContext('2d')
|
||
var img = new Image
|
||
img.onload = function() {
|
||
canvas.width = img.width
|
||
canvas.height = img.height
|
||
c2x.drawImage(img, 0, 0)
|
||
resolve(canvas.toDataURL())
|
||
canvas.height = canvas.width = 0
|
||
}
|
||
img.onerror = reject
|
||
img.src = path
|
||
return
|
||
}
|
||
if (typeof plus === 'object') {
|
||
plus.io.resolveLocalFileSystemURL(getLocalFilePath(path), function(entry) {
|
||
entry.file(function(file) {
|
||
var fileReader = new plus.io.FileReader()
|
||
fileReader.onload = function(data) {
|
||
resolve(data.target.result)
|
||
}
|
||
fileReader.onerror = function(error) {
|
||
reject(error)
|
||
}
|
||
fileReader.readAsDataURL(file)
|
||
}, function(error) {
|
||
reject(error)
|
||
})
|
||
}, function(error) {
|
||
reject(error)
|
||
})
|
||
return
|
||
}
|
||
if (typeof wx === 'object' && wx.canIUse('getFileSystemManager')) {
|
||
wx.getFileSystemManager().readFile({
|
||
filePath: path,
|
||
encoding: 'base64',
|
||
success: function(res) {
|
||
resolve('data:image/png;base64,' + res.data)
|
||
},
|
||
fail: function(error) {
|
||
reject(error)
|
||
}
|
||
})
|
||
return
|
||
}
|
||
reject(new Error('not support'))
|
||
})
|
||
}
|
||
|
||
function base64ToPath(base64) {
|
||
return new Promise(function(resolve, reject) {
|
||
if (typeof window === 'object' && 'document' in window) {
|
||
base64 = base64.split(',')
|
||
var type = base64[0].match(/:(.*?);/)[1]
|
||
var str = atob(base64[1])
|
||
var n = str.length
|
||
var array = new Uint8Array(n)
|
||
while (n--) {
|
||
array[n] = str.charCodeAt(n)
|
||
}
|
||
return resolve((window.URL || window.webkitURL).createObjectURL(new Blob([array], { type: type })))
|
||
}
|
||
var extName = base64.split(',')[0].match(/data\:\S+\/(\S+);/)
|
||
if (extName) {
|
||
extName = extName[1]
|
||
} else {
|
||
reject(new Error('base64 error'))
|
||
}
|
||
var fileName = getNewFileId() + '.' + extName
|
||
if (typeof plus === 'object') {
|
||
var basePath = '_doc'
|
||
var dirPath = 'uniapp_temp'
|
||
var filePath = basePath + '/' + dirPath + '/' + fileName
|
||
if (!biggerThan(plus.os.name === 'Android' ? '1.9.9.80627' : '1.9.9.80472', plus.runtime.innerVersion)) {
|
||
plus.io.resolveLocalFileSystemURL(basePath, function(entry) {
|
||
entry.getDirectory(dirPath, {
|
||
create: true,
|
||
exclusive: false,
|
||
}, function(entry) {
|
||
entry.getFile(fileName, {
|
||
create: true,
|
||
exclusive: false,
|
||
}, function(entry) {
|
||
entry.createWriter(function(writer) {
|
||
writer.onwrite = function() {
|
||
resolve(filePath)
|
||
}
|
||
writer.onerror = reject
|
||
writer.seek(0)
|
||
writer.writeAsBinary(dataUrlToBase64(base64))
|
||
}, reject)
|
||
}, reject)
|
||
}, reject)
|
||
}, reject)
|
||
return
|
||
}
|
||
var bitmap = new plus.nativeObj.Bitmap(fileName)
|
||
bitmap.loadBase64Data(base64, function() {
|
||
bitmap.save(filePath, {}, function() {
|
||
bitmap.clear()
|
||
resolve(filePath)
|
||
}, function(error) {
|
||
bitmap.clear()
|
||
reject(error)
|
||
})
|
||
}, function(error) {
|
||
bitmap.clear()
|
||
reject(error)
|
||
})
|
||
return
|
||
}
|
||
|
||
function getEnvPath() {
|
||
if(typeof my === 'object' && my?.env?.USER_DATA_PATH) {
|
||
// console.log('my')
|
||
return my.env.USER_DATA_PATH
|
||
}
|
||
if(typeof swan === 'object' && swan?.env?.USER_DATA_PATH) {
|
||
// console.log('swan')
|
||
return swan.env.USER_DATA_PATH
|
||
}
|
||
if(typeof tt === 'object' && tt?.env?.USER_DATA_PATH) {
|
||
// console.log('tt')
|
||
return tt.env.USER_DATA_PATH
|
||
}
|
||
if(typeof qq === 'object' && qq?.env?.USER_DATA_PATH) {
|
||
// console.log('qq')
|
||
return qq.env.USER_DATA_PATH
|
||
}
|
||
if(typeof qh === 'object' && qh?.env?.USER_DATA_PATH) {
|
||
// console.log('qh')
|
||
return qh.env.USER_DATA_PATH
|
||
}
|
||
if(typeof wx === 'object' && wx?.env?.USER_DATA_PATH) {
|
||
// console.log('wx')
|
||
return wx.env.USER_DATA_PATH
|
||
}
|
||
return 'https://user'
|
||
}
|
||
|
||
try{
|
||
var filePath = getEnvPath() + '/' + fileName
|
||
uni.getFileSystemManager().writeFile({
|
||
filePath: filePath,
|
||
data: dataUrlToBase64(base64),
|
||
encoding: 'base64',
|
||
success: function() {
|
||
resolve(filePath)
|
||
},
|
||
fail: function(error) {
|
||
reject(error)
|
||
}
|
||
})
|
||
}catch(e){
|
||
//TODO handle the exception
|
||
reject(new Error('not support'))
|
||
}
|
||
})
|
||
}
|
||
|
||
return {pathToBase64, base64ToPath}
|
||
})()
|
||
|
||
if (notUnd(typeof module)) {
|
||
module.exports = QSCanvas
|
||
}
|
||
|
||
return QSCanvas
|
||
})();
|
||
|
||
|