384 lines
8.7 KiB
JavaScript
384 lines
8.7 KiB
JavaScript
// Peity jQuery plugin version 3.2.0
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// (c) 2015 Ben Pickles
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//
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// http://benpickles.github.io/peity
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//
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// Released under MIT license.
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(function($, document, Math, undefined) {
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var peity = $.fn.peity = function(type, options) {
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if (svgSupported) {
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this.each(function() {
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var $this = $(this)
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var chart = $this.data('_peity')
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if (chart) {
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if (type) chart.type = type
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$.extend(chart.opts, options)
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} else {
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chart = new Peity(
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$this,
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type,
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$.extend({},
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peity.defaults[type],
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$this.data('peity'),
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options)
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)
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$this
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.change(function() { chart.draw() })
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.data('_peity', chart)
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}
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chart.draw()
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});
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}
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return this;
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};
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var Peity = function($el, type, opts) {
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this.$el = $el
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this.type = type
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this.opts = opts
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}
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var PeityPrototype = Peity.prototype
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var svgElement = PeityPrototype.svgElement = function(tag, attrs) {
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return $(
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document.createElementNS('http://www.w3.org/2000/svg', tag)
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).attr(attrs)
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}
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// https://gist.github.com/madrobby/3201472
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var svgSupported = 'createElementNS' in document && svgElement('svg', {})[0].createSVGRect
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PeityPrototype.draw = function() {
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var opts = this.opts
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peity.graphers[this.type].call(this, opts)
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if (opts.after) opts.after.call(this, opts)
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}
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PeityPrototype.fill = function() {
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var fill = this.opts.fill
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return $.isFunction(fill)
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? fill
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: function(_, i) { return fill[i % fill.length] }
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}
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PeityPrototype.prepare = function(width, height) {
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if (!this.$svg) {
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this.$el.hide().after(
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this.$svg = svgElement('svg', {
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"class": "peity"
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})
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)
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}
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return this.$svg
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.empty()
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.data('peity', this)
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.attr({
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height: height,
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width: width
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})
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}
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PeityPrototype.values = function() {
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return $.map(this.$el.text().split(this.opts.delimiter), function(value) {
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return parseFloat(value)
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})
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}
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peity.defaults = {}
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peity.graphers = {}
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peity.register = function(type, defaults, grapher) {
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this.defaults[type] = defaults
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this.graphers[type] = grapher
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}
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peity.register(
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'pie',
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{
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fill: ['#ff9900', '#fff4dd', '#ffc66e'],
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radius: 8
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},
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function(opts) {
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if (!opts.delimiter) {
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var delimiter = this.$el.text().match(/[^0-9\.]/)
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opts.delimiter = delimiter ? delimiter[0] : ","
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}
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var values = $.map(this.values(), function(n) {
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return n > 0 ? n : 0
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})
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if (opts.delimiter == "/") {
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var v1 = values[0]
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var v2 = values[1]
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values = [v1, Math.max(0, v2 - v1)]
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}
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var i = 0
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var length = values.length
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var sum = 0
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for (; i < length; i++) {
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sum += values[i]
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}
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if (!sum) {
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length = 2
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sum = 1
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values = [0, 1]
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}
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var diameter = opts.radius * 2
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var $svg = this.prepare(
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opts.width || diameter,
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opts.height || diameter
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)
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var width = $svg.width()
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, height = $svg.height()
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, cx = width / 2
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, cy = height / 2
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var radius = Math.min(cx, cy)
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, innerRadius = opts.innerRadius
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if (this.type == 'donut' && !innerRadius) {
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innerRadius = radius * 0.5
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}
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var pi = Math.PI
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var fill = this.fill()
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var scale = this.scale = function(value, radius) {
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var radians = value / sum * pi * 2 - pi / 2
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return [
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radius * Math.cos(radians) + cx,
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radius * Math.sin(radians) + cy
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]
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}
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var cumulative = 0
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for (i = 0; i < length; i++) {
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var value = values[i]
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, portion = value / sum
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, $node
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if (portion == 0) continue
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if (portion == 1) {
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if (innerRadius) {
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var x2 = cx - 0.01
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, y1 = cy - radius
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, y2 = cy - innerRadius
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$node = svgElement('path', {
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d: [
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'M', cx, y1,
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'A', radius, radius, 0, 1, 1, x2, y1,
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'L', x2, y2,
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'A', innerRadius, innerRadius, 0, 1, 0, cx, y2
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].join(' ')
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})
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} else {
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$node = svgElement('circle', {
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cx: cx,
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cy: cy,
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r: radius
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})
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}
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} else {
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var cumulativePlusValue = cumulative + value
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var d = ['M'].concat(
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scale(cumulative, radius),
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'A', radius, radius, 0, portion > 0.5 ? 1 : 0, 1,
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scale(cumulativePlusValue, radius),
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'L'
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)
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if (innerRadius) {
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d = d.concat(
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scale(cumulativePlusValue, innerRadius),
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'A', innerRadius, innerRadius, 0, portion > 0.5 ? 1 : 0, 0,
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scale(cumulative, innerRadius)
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)
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} else {
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d.push(cx, cy)
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}
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cumulative += value
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$node = svgElement('path', {
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d: d.join(" ")
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})
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}
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$node.attr('fill', fill.call(this, value, i, values))
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$svg.append($node)
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}
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}
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)
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peity.register(
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'donut',
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$.extend(true, {}, peity.defaults.pie),
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function(opts) {
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peity.graphers.pie.call(this, opts)
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}
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)
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peity.register(
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"line",
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{
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delimiter: ",",
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fill: "#c6d9fd",
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height: 16,
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min: 0,
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stroke: "#4d89f9",
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strokeWidth: 1,
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width: 32
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},
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function(opts) {
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var values = this.values()
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if (values.length == 1) values.push(values[0])
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var max = Math.max.apply(Math, opts.max == undefined ? values : values.concat(opts.max))
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, min = Math.min.apply(Math, opts.min == undefined ? values : values.concat(opts.min))
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var $svg = this.prepare(opts.width, opts.height)
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, strokeWidth = opts.strokeWidth
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, width = $svg.width()
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, height = $svg.height() - strokeWidth
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, diff = max - min
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var xScale = this.x = function(input) {
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return input * (width / (values.length - 1))
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}
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var yScale = this.y = function(input) {
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var y = height
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if (diff) {
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y -= ((input - min) / diff) * height
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}
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return y + strokeWidth / 2
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}
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var zero = yScale(Math.max(min, 0))
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, coords = [0, zero]
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for (var i = 0; i < values.length; i++) {
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coords.push(
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xScale(i),
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yScale(values[i])
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)
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}
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coords.push(width, zero)
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if (opts.fill) {
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$svg.append(
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svgElement('polygon', {
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fill: opts.fill,
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points: coords.join(' ')
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})
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)
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}
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if (strokeWidth) {
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$svg.append(
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svgElement('polyline', {
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fill: 'none',
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points: coords.slice(2, coords.length - 2).join(' '),
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stroke: opts.stroke,
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'stroke-width': strokeWidth,
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'stroke-linecap': 'square'
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})
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)
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}
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}
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);
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peity.register(
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'bar',
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{
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delimiter: ",",
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fill: ["#4D89F9"],
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height: 16,
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min: 0,
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padding: 0.1,
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width: 32
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},
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function(opts) {
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var values = this.values()
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, max = Math.max.apply(Math, opts.max == undefined ? values : values.concat(opts.max))
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, min = Math.min.apply(Math, opts.min == undefined ? values : values.concat(opts.min))
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var $svg = this.prepare(opts.width, opts.height)
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, width = $svg.width()
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, height = $svg.height()
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, diff = max - min
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, padding = opts.padding
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, fill = this.fill()
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var xScale = this.x = function(input) {
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return input * width / values.length
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}
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var yScale = this.y = function(input) {
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return height - (
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diff
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? ((input - min) / diff) * height
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: 1
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)
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}
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for (var i = 0; i < values.length; i++) {
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var x = xScale(i + padding)
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, w = xScale(i + 1 - padding) - x
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, value = values[i]
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, valueY = yScale(value)
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, y1 = valueY
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, y2 = valueY
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, h
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if (!diff) {
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h = 1
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} else if (value < 0) {
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y1 = yScale(Math.min(max, 0))
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} else {
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y2 = yScale(Math.max(min, 0))
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}
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h = y2 - y1
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if (h == 0) {
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h = 1
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if (max > 0 && diff) y1--
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}
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$svg.append(
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svgElement('rect', {
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fill: fill.call(this, value, i, values),
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x: x,
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y: y1,
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width: w,
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height: h
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})
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)
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}
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}
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);
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})(jQuery, document, Math);
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