| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210 | (function (root, factory) {  if (typeof define === 'function' && define.amd) {    // AMD. Register as an anonymous module.    define(factory);  } else if (typeof exports === 'object') {    // Node. Does not work with strict CommonJS, but    // only CommonJS-like enviroments that support module.exports,    // like Node.    module.exports = factory();  } else {    // Browser globals (root is window)    root.Sparkline = factory();  }}(window, function () {  function extend(specific, general) {    var obj = {};    for (var key in general) {      obj[key] = key in specific ? specific[key] : general[key];    }    return obj;  }  function Sparkline(element, options) {    this.element = element;    this.options = extend(options || {}, Sparkline.options);    init: {      this.element.innerHTML = "<canvas></canvas>";      this.canvas = this.element.firstChild;      this.context = this.canvas.getContext("2d");      this.ratio = window.devicePixelRatio || 1;      if (this.options.tooltip) {        this.canvas.style.position = "relative";        this.canvas.onmousemove = showTooltip.bind(this);      }    }  }  Sparkline.options = {    width: 100,    height: null,    lineColor: "black",    lineWidth: 1.5,    startColor: "transparent",    endColor: "black",    maxColor: "transparent",    minColor: "transparent",    minValue: null,    maxValue: null,    minMaxValue: null,    maxMinValue: null,    dotRadius: 2.5,    tooltip: null,    fillBelow: true,    fillLighten: 0.5,    startLine: false,    endLine: false,    minLine: false,    maxLine: false,    bottomLine: false,    topLine: false,    averageLine: false  };  Sparkline.init = function (element, options) {    return new Sparkline(element, options);  };  Sparkline.draw = function (element, points, options) {    var sparkline = new Sparkline(element, options);    sparkline.draw(points);    return sparkline;  }  function getY(minValue, maxValue, offsetY, height, index) {    var range = maxValue - minValue;    if (range == 0) {      return offsetY + height / 2;    } else {      return (offsetY + height) - ((this[index] - minValue) / range) * height;    }  }  function drawDot(radius, x1, x2, color, line, x, y) {    this.context.beginPath();    this.context.fillStyle = color;    this.context.arc(x, y, radius, 0, Math.PI * 2, false);    this.context.fill();    drawLine.call(this, x1, x2, line, x, y);  }  function drawLine(x1, x2, style, x, y){    if(!style) return;    this.context.save();    this.context.strokeStyle = style.color || 'black';    this.context.lineWidth = (style.width || 1) * this.ratio;    this.context.globalAlpha = style.alpha || 1;    this.context.beginPath();    this.context.moveTo(style.direction != 'right' ? x1 : x, y);    this.context.lineTo(style.direction != 'left' ? x2 : x, y);    this.context.stroke();    this.context.restore();  }  function showTooltip(e) {    var x = e.offsetX || e.layerX || 0;    var delta = ((this.options.width - this.options.dotRadius * 2) / (this.points.length - 1));    var index = minmax(0, Math.round((x - this.options.dotRadius) / delta), this.points.length - 1);    this.canvas.title = this.options.tooltip(this.points[index], index, this.points);  }  Sparkline.prototype.draw = function (points) {    points = points || [];    this.points = points;    this.canvas.width = this.options.width * this.ratio;    this.canvas.style.width = this.options.width + 'px';    var pxHeight = this.options.height || this.element.offsetHeight;    this.canvas.height = pxHeight * this.ratio;    this.canvas.style.height = pxHeight + 'px';    var lineWidth = this.options.lineWidth * this.ratio;    var offsetX = Math.max(this.options.dotRadius * this.ratio, lineWidth/2);    var offsetY = Math.max(this.options.dotRadius * this.ratio, lineWidth/2);    var width = this.canvas.width - offsetX * 2;    var height = this.canvas.height - offsetY * 2;    var minValue = Math.min.apply(Math, points);    var maxValue = Math.max.apply(Math, points);    var bottomValue = this.options.minValue != undefined ? this.options.minValue : Math.min(minValue, this.options.maxMinValue != undefined ? this.options.maxMinValue : minValue);    var topValue = this.options.maxValue != undefined ? this.options.maxValue : Math.max(maxValue, this.options.minMaxValue != undefined ? this.options.minMaxValue : maxValue);    var minX = offsetX;    var maxX = offsetX;    var x = offsetX;    var y = getY.bind(points, bottomValue, topValue, offsetY, height);    var delta = width / (points.length - 1);    var dot = drawDot.bind(this, this.options.dotRadius * this.ratio, offsetX, width + offsetX);    var line = drawLine.bind(this, offsetX, width + offsetX);    this.context.save();    this.context.strokeStyle = this.options.lineColor;    this.context.fillStyle = this.options.lineColor;    this.context.lineWidth = lineWidth;    this.context.lineCap = 'round';    this.context.lineJoin = 'round';    if(this.options.fillBelow && points.length > 1){      this.context.save();      this.context.beginPath();      this.context.moveTo(x, y(0));      for (var i = 1; i < points.length; i++) {        x += delta;        minX = points[i] == minValue ? x : minX;        maxX = points[i] == maxValue ? x : maxX;        this.context.lineTo(x, y(i));      }      this.context.lineTo(width+offsetX, height + offsetY + lineWidth/2);      this.context.lineTo(offsetX, height + offsetY + lineWidth/2);      this.context.fill();      if(this.options.fillLighten > 0){        this.context.fillStyle = 'white';        this.context.globalAlpha = this.options.fillLighten;        this.context.fill();        this.context.globalAlpha = 1;      }else if(this.options.fillLighten < 0){        this.context.fillStyle = 'black';        this.context.globalAlpha = -this.options.fillLighten;        this.context.fill();      }      this.context.restore();    }    x = offsetX;    this.context.beginPath();    this.context.moveTo(x, y(0));    for (var i = 1; i < points.length; i++) {      x += delta;      this.context.lineTo(x, y(i));    }    this.context.stroke();    this.context.restore();    line(this.options.bottomLine, 0, offsetY);    line(this.options.topLine, 0, height + offsetY+lineWidth/2);    dot(this.options.startColor, this.options.startLine, offsetX + (points.length == 1 ? width / 2 : 0), y(0));    dot(this.options.endColor, this.options.endLine, offsetX + (points.length == 1 ? width / 2 : width), y(points.length-1));    dot(this.options.minColor, this.options.minLine, minX + (points.length == 1 ? width / 2 : 0), y(points.indexOf(minValue)));    dot(this.options.maxColor, this.options.maxLine, maxX + (points.length == 1 ? width / 2 : 0), y(points.indexOf(maxValue)));    //line(this.options.averageLine, )  }  function minmax(a, b, c) {    return Math.max(a, Math.min(b, c));  }  return Sparkline;}));
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