875 lines
24 KiB
JavaScript
875 lines
24 KiB
JavaScript
(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.Legend = factory());
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}(this, (function () { 'use strict';
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/**
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* 新建canvas
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*
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* @param {number} width 宽
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* @param {number} height 高
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*/
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function Canvas(width, height) {
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var canvas;
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if (typeof document === 'undefined') {
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// var Canvas = require('canvas');
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// canvas = new Canvas(width, height);
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} else {
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var canvas = document.createElement('canvas');
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if (width) {
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canvas.width = canvas.style.width = width;
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}
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if (height) {
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canvas.height = canvas.style.height = height;
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}
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}
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return canvas;
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}
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/**
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* 颜色工具类
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* @date 2017-06-28
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*/
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function ColorUtil() {
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this.startColor = '#ffffff';
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this.endColor = '#4CE35B';
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this.step = 5;
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}
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/**
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* @description 将rgb表示方式转换为hex表示方式("rgb(21,12,150)")或者（[21,12,150])
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* @param {string} 返回rgb颜色值
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* @returns 返回hex颜色值
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*/
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ColorUtil.prototype.rgb2hex = function (rgb) {
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var _this = rgb;
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var strHex = "#";
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var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
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if (Object.prototype.toString.call(_this) === '[object Array]') {
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for (var i = 0; i < _this.length; i++) {
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var hex = Number(_this[i]).toString(16);
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hex = hex < 10 ? 0 + '' + hex : hex; // 保证每个rgb的值为2位
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if (hex === "0") {
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hex += hex;
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}
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strHex += hex;
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}
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if (strHex.length !== 7) {
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strHex = _this;
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}
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return strHex;
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} else if (/^(rgb|RGB)/.test(_this)) {
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var aColor = _this.replace(/(?:(|)|rgb|RGB)*/g, "").split(",");
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strHex = "#";
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for (var i = 0; i < aColor.length; i++) {
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var hex = Number(aColor[i]).toString(16);
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hex = hex < 10 ? 0 + '' + hex : hex; // 保证每个rgb的值为2位
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if (hex === "0") {
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hex += hex;
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}
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strHex += hex;
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}
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if (strHex.length !== 7) {
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strHex = _this;
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}
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return strHex;
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} else if (reg.test(_this)) {
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var aNum = _this.replace(/#/, "").split("");
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if (aNum.length === 6) {
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return _this;
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} else if (aNum.length === 3) {
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strHex = "#";
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for (var i = 0; i < aNum.length; i += 1) {
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numHex += aNum[i] + aNum[i];
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}
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return numHex;
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}
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} else {
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return _this;
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}
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};
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/**
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* @description 将hex表示方式转换为rgb表示方式(这里返回rgb数组模式)
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* @param {string} hex 颜色值
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* @returns 返回rgb数组模式
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*/
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ColorUtil.prototype.hex2rgb = function (hex) {
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var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
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var hex = hex.toLowerCase();
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if (hex && reg.test(hex)) {
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if (hex.length === 4) {
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var sColorNew = "#";
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for (var i = 1; i < 4; i += 1) {
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sColorNew += hex.slice(i, i + 1).concat(hex.slice(i, i + 1));
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}
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hex = sColorNew;
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}
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//处理六位的颜色值
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var sColorChange = [];
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for (var i = 1; i < 7; i += 2) {
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sColorChange.push(parseInt("0x" + hex.slice(i, i + 2)));
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}
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return sColorChange;
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} else {
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return hex;
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}
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};
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/**
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* @description 获取一组渐变色('#1abc9c','#333fff',5)
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* @param {string} startColor 起始颜色
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* @param {string} endColor 结束颜色
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* @param {number} step 分段数
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* @returns 返回渐变颜色数组
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*/
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ColorUtil.prototype.getGradientColor = function (startColor, endColor, step) {
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startColor = startColor || this.startColor;
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endColor = endColor || this.endColor;
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step = step || this.step;
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var startRGB = this.hex2rgb(startColor); //转换为rgb数组模式
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var startR = startRGB[0];
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var startG = startRGB[1];
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var startB = startRGB[2];
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var endRGB = this.hex2rgb(endColor);
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var endR = endRGB[0];
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var endG = endRGB[1];
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var endB = endRGB[2];
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var sR = (endR - startR) / step; //总差值
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var sG = (endG - startG) / step;
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var sB = (endB - startB) / step;
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var colorArr = [];
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for (var i = 0; i < step; i++) {
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//计算每一步的hex值
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var hex = this.rgb2hex([parseInt(sR * i + startR), parseInt(sG * i + startG), parseInt(sB * i + startB)]);
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colorArr.push(hex);
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}
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return colorArr;
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};
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/**
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* Tween.js - Licensed under the MIT license
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* https://github.com/tweenjs/tween.js
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* ----------------------------------------------
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*
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* See https://github.com/tweenjs/tween.js/graphs/contributors for the full list of contributors.
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* Thank you all, you're awesome!
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*/
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var TWEEN = TWEEN || function () {
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var _tweens = [];
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return {
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getAll: function getAll() {
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return _tweens;
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},
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removeAll: function removeAll() {
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_tweens = [];
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},
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add: function add(tween) {
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_tweens.push(tween);
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},
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remove: function remove(tween) {
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var i = _tweens.indexOf(tween);
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if (i !== -1) {
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_tweens.splice(i, 1);
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}
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},
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update: function update(time, preserve) {
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if (_tweens.length === 0) {
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return false;
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}
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var i = 0;
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time = time !== undefined ? time : TWEEN.now();
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while (i < _tweens.length) {
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if (_tweens[i].update(time) || preserve) {
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i++;
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} else {
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_tweens.splice(i, 1);
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}
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}
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return true;
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}
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};
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}();
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// Include a performance.now polyfill.
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// In node.js, use process.hrtime.
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if (typeof window === 'undefined' && typeof process !== 'undefined') {
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TWEEN.now = function () {
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var time = process.hrtime();
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// Convert [seconds, nanoseconds] to milliseconds.
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return time[0] * 1000 + time[1] / 1000000;
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};
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}
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// In a browser, use window.performance.now if it is available.
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else if (typeof window !== 'undefined' && window.performance !== undefined && window.performance.now !== undefined) {
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// This must be bound, because directly assigning this function
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// leads to an invocation exception in Chrome.
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TWEEN.now = window.performance.now.bind(window.performance);
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}
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// Use Date.now if it is available.
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else if (Date.now !== undefined) {
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TWEEN.now = Date.now;
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}
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// Otherwise, use 'new Date().getTime()'.
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else {
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TWEEN.now = function () {
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return new Date().getTime();
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};
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}
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TWEEN.Tween = function (object) {
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var _object = object;
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var _valuesStart = {};
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var _valuesEnd = {};
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var _valuesStartRepeat = {};
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var _duration = 1000;
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var _repeat = 0;
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var _repeatDelayTime;
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var _yoyo = false;
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var _isPlaying = false;
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var _reversed = false;
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var _delayTime = 0;
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var _startTime = null;
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var _easingFunction = TWEEN.Easing.Linear.None;
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var _interpolationFunction = TWEEN.Interpolation.Linear;
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var _chainedTweens = [];
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var _onStartCallback = null;
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var _onStartCallbackFired = false;
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var _onUpdateCallback = null;
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var _onCompleteCallback = null;
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var _onStopCallback = null;
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this.to = function (properties, duration) {
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_valuesEnd = properties;
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if (duration !== undefined) {
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_duration = duration;
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}
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return this;
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};
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this.start = function (time) {
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TWEEN.add(this);
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_isPlaying = true;
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_onStartCallbackFired = false;
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_startTime = time !== undefined ? time : TWEEN.now();
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_startTime += _delayTime;
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for (var property in _valuesEnd) {
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// Check if an Array was provided as property value
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if (_valuesEnd[property] instanceof Array) {
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if (_valuesEnd[property].length === 0) {
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continue;
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}
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// Create a local copy of the Array with the start value at the front
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_valuesEnd[property] = [_object[property]].concat(_valuesEnd[property]);
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}
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// If `to()` specifies a property that doesn't exist in the source object,
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// we should not set that property in the object
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if (_object[property] === undefined) {
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continue;
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}
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// Save the starting value.
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_valuesStart[property] = _object[property];
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if (_valuesStart[property] instanceof Array === false) {
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_valuesStart[property] *= 1.0; // Ensures we're using numbers, not strings
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}
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_valuesStartRepeat[property] = _valuesStart[property] || 0;
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}
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return this;
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};
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this.stop = function () {
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if (!_isPlaying) {
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return this;
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}
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TWEEN.remove(this);
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_isPlaying = false;
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if (_onStopCallback !== null) {
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_onStopCallback.call(_object, _object);
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}
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this.stopChainedTweens();
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return this;
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};
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this.end = function () {
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this.update(_startTime + _duration);
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return this;
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};
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this.stopChainedTweens = function () {
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for (var i = 0, numChainedTweens = _chainedTweens.length; i < numChainedTweens; i++) {
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_chainedTweens[i].stop();
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}
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};
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this.delay = function (amount) {
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_delayTime = amount;
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return this;
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};
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this.repeat = function (times) {
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_repeat = times;
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return this;
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};
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this.repeatDelay = function (amount) {
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_repeatDelayTime = amount;
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return this;
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};
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this.yoyo = function (yoyo) {
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_yoyo = yoyo;
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return this;
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};
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this.easing = function (easing) {
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_easingFunction = easing;
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return this;
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};
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this.interpolation = function (interpolation) {
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_interpolationFunction = interpolation;
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return this;
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};
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this.chain = function () {
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_chainedTweens = arguments;
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return this;
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};
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this.onStart = function (callback) {
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_onStartCallback = callback;
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return this;
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};
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this.onUpdate = function (callback) {
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_onUpdateCallback = callback;
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return this;
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};
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this.onComplete = function (callback) {
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_onCompleteCallback = callback;
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return this;
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};
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this.onStop = function (callback) {
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_onStopCallback = callback;
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return this;
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};
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this.update = function (time) {
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var property;
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var elapsed;
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var value;
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if (time < _startTime) {
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return true;
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}
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if (_onStartCallbackFired === false) {
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if (_onStartCallback !== null) {
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_onStartCallback.call(_object, _object);
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}
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_onStartCallbackFired = true;
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}
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elapsed = (time - _startTime) / _duration;
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elapsed = elapsed > 1 ? 1 : elapsed;
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value = _easingFunction(elapsed);
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for (property in _valuesEnd) {
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// Don't update properties that do not exist in the source object
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if (_valuesStart[property] === undefined) {
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continue;
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}
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var start = _valuesStart[property] || 0;
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var end = _valuesEnd[property];
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if (end instanceof Array) {
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_object[property] = _interpolationFunction(end, value);
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} else {
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// Parses relative end values with start as base (e.g.: +10, -3)
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if (typeof end === 'string') {
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if (end.charAt(0) === '+' || end.charAt(0) === '-') {
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end = start + parseFloat(end);
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} else {
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end = parseFloat(end);
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}
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}
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// Protect against non numeric properties.
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if (typeof end === 'number') {
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_object[property] = start + (end - start) * value;
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}
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}
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}
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if (_onUpdateCallback !== null) {
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_onUpdateCallback.call(_object, value);
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}
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if (elapsed === 1) {
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if (_repeat > 0) {
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if (isFinite(_repeat)) {
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_repeat--;
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}
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// Reassign starting values, restart by making startTime = now
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for (property in _valuesStartRepeat) {
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if (typeof _valuesEnd[property] === 'string') {
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_valuesStartRepeat[property] = _valuesStartRepeat[property] + parseFloat(_valuesEnd[property]);
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}
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if (_yoyo) {
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var tmp = _valuesStartRepeat[property];
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_valuesStartRepeat[property] = _valuesEnd[property];
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_valuesEnd[property] = tmp;
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}
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_valuesStart[property] = _valuesStartRepeat[property];
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}
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if (_yoyo) {
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_reversed = !_reversed;
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}
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if (_repeatDelayTime !== undefined) {
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_startTime = time + _repeatDelayTime;
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} else {
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_startTime = time + _delayTime;
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}
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return true;
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} else {
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if (_onCompleteCallback !== null) {
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_onCompleteCallback.call(_object, _object);
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}
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for (var i = 0, numChainedTweens = _chainedTweens.length; i < numChainedTweens; i++) {
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// Make the chained tweens start exactly at the time they should,
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// even if the `update()` method was called way past the duration of the tween
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_chainedTweens[i].start(_startTime + _duration);
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}
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return false;
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}
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}
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return true;
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};
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};
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TWEEN.Easing = {
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Linear: {
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None: function None(k) {
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return k;
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}
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},
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Quadratic: {
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In: function In(k) {
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return k * k;
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},
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Out: function Out(k) {
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return k * (2 - k);
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},
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InOut: function InOut(k) {
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if ((k *= 2) < 1) {
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return 0.5 * k * k;
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}
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return -0.5 * (--k * (k - 2) - 1);
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}
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},
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Cubic: {
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In: function In(k) {
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return k * k * k;
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},
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Out: function Out(k) {
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return --k * k * k + 1;
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},
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InOut: function InOut(k) {
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if ((k *= 2) < 1) {
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return 0.5 * k * k * k;
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}
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return 0.5 * ((k -= 2) * k * k + 2);
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}
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},
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Quartic: {
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In: function In(k) {
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return k * k * k * k;
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},
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Out: function Out(k) {
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return 1 - --k * k * k * k;
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},
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InOut: function InOut(k) {
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if ((k *= 2) < 1) {
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return 0.5 * k * k * k * k;
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}
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return -0.5 * ((k -= 2) * k * k * k - 2);
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}
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},
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Quintic: {
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In: function In(k) {
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return k * k * k * k * k;
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},
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Out: function Out(k) {
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return --k * k * k * k * k + 1;
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},
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InOut: function InOut(k) {
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if ((k *= 2) < 1) {
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return 0.5 * k * k * k * k * k;
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}
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return 0.5 * ((k -= 2) * k * k * k * k + 2);
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}
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},
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Sinusoidal: {
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In: function In(k) {
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return 1 - Math.cos(k * Math.PI / 2);
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|
},
|
|
Out: function Out(k) {
|
|
return Math.sin(k * Math.PI / 2);
|
|
},
|
|
InOut: function InOut(k) {
|
|
return 0.5 * (1 - Math.cos(Math.PI * k));
|
|
}
|
|
},
|
|
Exponential: {
|
|
In: function In(k) {
|
|
return k === 0 ? 0 : Math.pow(1024, k - 1);
|
|
},
|
|
Out: function Out(k) {
|
|
return k === 1 ? 1 : 1 - Math.pow(2, -10 * k);
|
|
},
|
|
InOut: function InOut(k) {
|
|
if (k === 0) {
|
|
return 0;
|
|
}
|
|
if (k === 1) {
|
|
return 1;
|
|
}
|
|
if ((k *= 2) < 1) {
|
|
return 0.5 * Math.pow(1024, k - 1);
|
|
}
|
|
return 0.5 * (-Math.pow(2, -10 * (k - 1)) + 2);
|
|
}
|
|
},
|
|
Circular: {
|
|
In: function In(k) {
|
|
return 1 - Math.sqrt(1 - k * k);
|
|
},
|
|
Out: function Out(k) {
|
|
return Math.sqrt(1 - --k * k);
|
|
},
|
|
InOut: function InOut(k) {
|
|
if ((k *= 2) < 1) {
|
|
return -0.5 * (Math.sqrt(1 - k * k) - 1);
|
|
}
|
|
return 0.5 * (Math.sqrt(1 - (k -= 2) * k) + 1);
|
|
}
|
|
},
|
|
Elastic: {
|
|
In: function In(k) {
|
|
if (k === 0) {
|
|
return 0;
|
|
}
|
|
if (k === 1) {
|
|
return 1;
|
|
}
|
|
return -Math.pow(2, 10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI);
|
|
},
|
|
Out: function Out(k) {
|
|
if (k === 0) {
|
|
return 0;
|
|
}
|
|
if (k === 1) {
|
|
return 1;
|
|
}
|
|
return Math.pow(2, -10 * k) * Math.sin((k - 0.1) * 5 * Math.PI) + 1;
|
|
},
|
|
InOut: function InOut(k) {
|
|
|
|
if (k === 0) {
|
|
return 0;
|
|
}
|
|
|
|
if (k === 1) {
|
|
return 1;
|
|
}
|
|
|
|
k *= 2;
|
|
|
|
if (k < 1) {
|
|
return -0.5 * Math.pow(2, 10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI);
|
|
}
|
|
|
|
return 0.5 * Math.pow(2, -10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI) + 1;
|
|
}
|
|
|
|
},
|
|
Back: {
|
|
In: function In(k) {
|
|
var s = 1.70158;
|
|
return k * k * ((s + 1) * k - s);
|
|
},
|
|
Out: function Out(k) {
|
|
var s = 1.70158;
|
|
return --k * k * ((s + 1) * k + s) + 1;
|
|
},
|
|
InOut: function InOut(k) {
|
|
var s = 1.70158 * 1.525;
|
|
if ((k *= 2) < 1) {
|
|
return 0.5 * (k * k * ((s + 1) * k - s));
|
|
}
|
|
return 0.5 * ((k -= 2) * k * ((s + 1) * k + s) + 2);
|
|
}
|
|
},
|
|
Bounce: {
|
|
In: function In(k) {
|
|
return 1 - TWEEN.Easing.Bounce.Out(1 - k);
|
|
},
|
|
Out: function Out(k) {
|
|
if (k < 1 / 2.75) {
|
|
return 7.5625 * k * k;
|
|
} else if (k < 2 / 2.75) {
|
|
return 7.5625 * (k -= 1.5 / 2.75) * k + 0.75;
|
|
} else if (k < 2.5 / 2.75) {
|
|
return 7.5625 * (k -= 2.25 / 2.75) * k + 0.9375;
|
|
} else {
|
|
return 7.5625 * (k -= 2.625 / 2.75) * k + 0.984375;
|
|
}
|
|
},
|
|
InOut: function InOut(k) {
|
|
if (k < 0.5) {
|
|
return TWEEN.Easing.Bounce.In(k * 2) * 0.5;
|
|
}
|
|
return TWEEN.Easing.Bounce.Out(k * 2 - 1) * 0.5 + 0.5;
|
|
}
|
|
}
|
|
};
|
|
|
|
TWEEN.Interpolation = {
|
|
Linear: function Linear(v, k) {
|
|
var m = v.length - 1;
|
|
var f = m * k;
|
|
var i = Math.floor(f);
|
|
var fn = TWEEN.Interpolation.Utils.Linear;
|
|
|
|
if (k < 0) {
|
|
return fn(v[0], v[1], f);
|
|
}
|
|
|
|
if (k > 1) {
|
|
return fn(v[m], v[m - 1], m - f);
|
|
}
|
|
|
|
return fn(v[i], v[i + 1 > m ? m : i + 1], f - i);
|
|
},
|
|
Bezier: function Bezier(v, k) {
|
|
var b = 0;
|
|
var n = v.length - 1;
|
|
var pw = Math.pow;
|
|
var bn = TWEEN.Interpolation.Utils.Bernstein;
|
|
|
|
for (var i = 0; i <= n; i++) {
|
|
b += pw(1 - k, n - i) * pw(k, i) * v[i] * bn(n, i);
|
|
}
|
|
|
|
return b;
|
|
},
|
|
CatmullRom: function CatmullRom(v, k) {
|
|
var m = v.length - 1;
|
|
var f = m * k;
|
|
var i = Math.floor(f);
|
|
var fn = TWEEN.Interpolation.Utils.CatmullRom;
|
|
|
|
if (v[0] === v[m]) {
|
|
if (k < 0) {
|
|
i = Math.floor(f = m * (1 + k));
|
|
}
|
|
return fn(v[(i - 1 + m) % m], v[i], v[(i + 1) % m], v[(i + 2) % m], f - i);
|
|
} else {
|
|
if (k < 0) {
|
|
return v[0] - (fn(v[0], v[0], v[1], v[1], -f) - v[0]);
|
|
}
|
|
if (k > 1) {
|
|
return v[m] - (fn(v[m], v[m], v[m - 1], v[m - 1], f - m) - v[m]);
|
|
}
|
|
return fn(v[i ? i - 1 : 0], v[i], v[m < i + 1 ? m : i + 1], v[m < i + 2 ? m : i + 2], f - i);
|
|
}
|
|
},
|
|
Utils: {
|
|
Linear: function Linear(p0, p1, t) {
|
|
return (p1 - p0) * t + p0;
|
|
},
|
|
Bernstein: function Bernstein(n, i) {
|
|
var fc = TWEEN.Interpolation.Utils.Factorial;
|
|
return fc(n) / fc(i) / fc(n - i);
|
|
},
|
|
Factorial: function () {
|
|
var a = [1];
|
|
return function (n) {
|
|
var s = 1;
|
|
if (a[n]) {
|
|
return a[n];
|
|
}
|
|
for (var i = n; i > 1; i--) {
|
|
s *= i;
|
|
}
|
|
a[n] = s;
|
|
return s;
|
|
};
|
|
}(),
|
|
CatmullRom: function CatmullRom(p0, p1, p2, p3, t) {
|
|
var v0 = (p2 - p0) * 0.5;
|
|
var v1 = (p3 - p1) * 0.5;
|
|
var t2 = t * t;
|
|
var t3 = t * t2;
|
|
|
|
return (2 * p1 - 2 * p2 + v0 + v1) * t3 + (-3 * p1 + 3 * p2 - 2 * v0 - v1) * t2 + v0 * t + p1;
|
|
}
|
|
}
|
|
};
|
|
|
|
var Legend = function Legend(id, options) {
|
|
var width = window.innerWidth,
|
|
height = window.innerHeight,
|
|
canvas = new Canvas(width, height),
|
|
context = canvas.getContext('2d');
|
|
|
|
document.getElementById(id).appendChild(canvas);
|
|
var p = document.getElementById('process');
|
|
var coords = {
|
|
x: 0,
|
|
y: 0
|
|
};
|
|
var tween = new TWEEN.Tween(coords).to({
|
|
x: width,
|
|
y: height
|
|
}, 2000).easing(TWEEN.Easing.Quadratic.InOut).onUpdate(function () {
|
|
p.style.width = this.y + 'px';
|
|
console.log(this.x, this.y);
|
|
}).start();
|
|
|
|
requestAnimationFrame(animate);
|
|
|
|
function animate(time) {
|
|
requestAnimationFrame(animate);
|
|
TWEEN.update(time);
|
|
}
|
|
|
|
function Rect(x, y, color, width, height) {
|
|
this.x = x;
|
|
this.y = y;
|
|
this.width = width || 20;
|
|
this.height = height || 10;
|
|
this.color = color;
|
|
this.cancle = false;
|
|
|
|
this.clickEvent = this.clickEvent.bind(this);
|
|
this.mousemoveEvent = this.mousemoveEvent.bind(this);
|
|
this.bindEvent();
|
|
}
|
|
|
|
Rect.prototype.clickEvent = function (e) {
|
|
if (e.x >= this.x && e.x <= this.x + this.width && e.y >= this.y && e.y <= this.y + this.height) {
|
|
this.cancle ? this.reset() : this.update();
|
|
}
|
|
};
|
|
|
|
Rect.prototype.mousemoveEvent = function (e) {
|
|
if (e.x >= this.x && e.x <= this.x + this.width && e.y >= this.y && e.y <= this.y + this.height) {
|
|
canvas.style.cursor = 'pointer';
|
|
} else {
|
|
canvas.style.cursor = 'default';
|
|
}
|
|
};
|
|
|
|
Rect.prototype.bindEvent = function (e) {
|
|
canvas.addEventListener('click', this.clickEvent);
|
|
canvas.addEventListener('mousemove', this.mousemoveEvent);
|
|
};
|
|
|
|
Rect.prototype.update = function (e) {
|
|
context.fillStyle = '#eee';
|
|
context.fillRect(this.x, this.y, this.width, this.height);
|
|
this.cancle = true;
|
|
};
|
|
|
|
Rect.prototype.reset = function (e) {
|
|
context.fillStyle = this.color;
|
|
context.fillRect(this.x, this.y, this.width, this.height);
|
|
this.cancle = false;
|
|
};
|
|
|
|
var colorUtil = new ColorUtil();
|
|
|
|
var colorArr = colorUtil.getGradientColor(options.startColor, options.endColor, options.step);
|
|
|
|
//分段值域
|
|
for (var i = 0, len = colorArr.length; i < len; i++) {
|
|
var color = colorArr[i];
|
|
var gap = 15;
|
|
var rect = new Rect(width / 4, height / 4 + 15 * i, color);
|
|
drawRect(rect);
|
|
}
|
|
|
|
//渐变色条
|
|
var lineRect = new Rect(width / 2, height / 4, '#A6E32D', 20, 150);
|
|
drawRect(lineRect);
|
|
|
|
function drawRect(rect) {
|
|
context.save();
|
|
context.beginPath();
|
|
context.fillStyle = rect.color;
|
|
context.fillRect(rect.x, rect.y, rect.width, rect.height);
|
|
context.closePath();
|
|
context.restore();
|
|
}
|
|
};
|
|
|
|
return Legend;
|
|
|
|
})));
|