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JavaScript

2 years ago
// Peity jQuery plugin version 3.3.0
// (c) 2018 Ben Pickles
//
// http://benpickles.github.io/peity
//
// Released under MIT license.
(function($, document, Math, undefined) {
var peity = $.fn.peity = function(type, options) {
if (svgSupported) {
this.each(function() {
var $this = $(this)
var chart = $this.data('_peity')
if (chart) {
if (type) chart.type = type
$.extend(chart.opts, options)
} else {
chart = new Peity(
$this,
type,
$.extend({},
peity.defaults[type],
$this.data('peity'),
options)
)
$this
.change(function() { chart.draw() })
.data('_peity', chart)
}
chart.draw()
});
}
return this;
};
var Peity = function($el, type, opts) {
this.$el = $el
this.type = type
this.opts = opts
}
var PeityPrototype = Peity.prototype
var svgElement = PeityPrototype.svgElement = function(tag, attrs) {
return $(
document.createElementNS('http://www.w3.org/2000/svg', tag)
).attr(attrs)
}
// https://gist.github.com/madrobby/3201472
var svgSupported = 'createElementNS' in document && svgElement('svg', {})[0].createSVGRect
PeityPrototype.draw = function() {
var opts = this.opts
peity.graphers[this.type].call(this, opts)
if (opts.after) opts.after.call(this, opts)
}
PeityPrototype.fill = function() {
var fill = this.opts.fill
return $.isFunction(fill)
? fill
: function(_, i) { return fill[i % fill.length] }
}
PeityPrototype.prepare = function(width, height) {
if (!this.$svg) {
this.$el.hide().after(
this.$svg = svgElement('svg', {
"class": "peity"
})
)
}
return this.$svg
.empty()
.data('_peity', this)
.attr({
height: height,
width: width
})
}
PeityPrototype.values = function() {
return $.map(this.$el.text().split(this.opts.delimiter), function(value) {
return parseFloat(value)
})
}
peity.defaults = {}
peity.graphers = {}
peity.register = function(type, defaults, grapher) {
this.defaults[type] = defaults
this.graphers[type] = grapher
}
peity.register(
'pie',
{
fill: ['#ff9900', '#fff4dd', '#ffc66e'],
radius: 8
},
function(opts) {
if (!opts.delimiter) {
var delimiter = this.$el.text().match(/[^0-9\.]/)
opts.delimiter = delimiter ? delimiter[0] : ","
}
var values = $.map(this.values(), function(n) {
return n > 0 ? n : 0
})
if (opts.delimiter == "/") {
var v1 = values[0]
var v2 = values[1]
values = [v1, Math.max(0, v2 - v1)]
}
var i = 0
var length = values.length
var sum = 0
for (; i < length; i++) {
sum += values[i]
}
if (!sum) {
length = 2
sum = 1
values = [0, 1]
}
var diameter = opts.radius * 2
var $svg = this.prepare(
opts.width || diameter,
opts.height || diameter
)
var width = $svg.width()
, height = $svg.height()
, cx = width / 2
, cy = height / 2
var radius = Math.min(cx, cy)
, innerRadius = opts.innerRadius
if (this.type == 'donut' && !innerRadius) {
innerRadius = radius * 0.5
}
var pi = Math.PI
var fill = this.fill()
var scale = this.scale = function(value, radius) {
var radians = value / sum * pi * 2 - pi / 2
return [
radius * Math.cos(radians) + cx,
radius * Math.sin(radians) + cy
]
}
var cumulative = 0
for (i = 0; i < length; i++) {
var value = values[i]
, portion = value / sum
, $node
if (portion == 0) continue
if (portion == 1) {
if (innerRadius) {
var x2 = cx - 0.01
, y1 = cy - radius
, y2 = cy - innerRadius
$node = svgElement('path', {
d: [
'M', cx, y1,
'A', radius, radius, 0, 1, 1, x2, y1,
'L', x2, y2,
'A', innerRadius, innerRadius, 0, 1, 0, cx, y2
].join(' '),
'data-value': value,
})
} else {
$node = svgElement('circle', {
cx: cx,
cy: cy,
'data-value': value,
r: radius
})
}
} else {
var cumulativePlusValue = cumulative + value
var d = ['M'].concat(
scale(cumulative, radius),
'A', radius, radius, 0, portion > 0.5 ? 1 : 0, 1,
scale(cumulativePlusValue, radius),
'L'
)
if (innerRadius) {
d = d.concat(
scale(cumulativePlusValue, innerRadius),
'A', innerRadius, innerRadius, 0, portion > 0.5 ? 1 : 0, 0,
scale(cumulative, innerRadius)
)
} else {
d.push(cx, cy)
}
cumulative += value
$node = svgElement('path', {
d: d.join(" "),
'data-value': value,
})
}
$node.attr('fill', fill.call(this, value, i, values))
$svg.append($node)
}
}
)
peity.register(
'donut',
$.extend(true, {}, peity.defaults.pie),
function(opts) {
peity.graphers.pie.call(this, opts)
}
)
peity.register(
"line",
{
delimiter: ",",
fill: "#c6d9fd",
height: 16,
min: 0,
stroke: "#4d89f9",
strokeWidth: 1,
width: 32
},
function(opts) {
var values = this.values()
if (values.length == 1) values.push(values[0])
var max = Math.max.apply(Math, opts.max == undefined ? values : values.concat(opts.max))
, min = Math.min.apply(Math, opts.min == undefined ? values : values.concat(opts.min))
var $svg = this.prepare(opts.width, opts.height)
, strokeWidth = opts.strokeWidth
, width = $svg.width()
, height = $svg.height() - strokeWidth
, diff = max - min
var xScale = this.x = function(input) {
return input * (width / (values.length - 1))
}
var yScale = this.y = function(input) {
var y = height
if (diff) {
y -= ((input - min) / diff) * height
}
return y + strokeWidth / 2
}
var zero = yScale(Math.max(min, 0))
, coords = [0, zero]
for (var i = 0; i < values.length; i++) {
coords.push(
xScale(i),
yScale(values[i])
)
}
coords.push(width, zero)
if (opts.fill) {
$svg.append(
svgElement('polygon', {
fill: opts.fill,
points: coords.join(' ')
})
)
}
if (strokeWidth) {
$svg.append(
svgElement('polyline', {
fill: 'none',
points: coords.slice(2, coords.length - 2).join(' '),
stroke: opts.stroke,
'stroke-width': strokeWidth,
'stroke-linecap': 'square'
})
)
}
}
);
peity.register(
'bar',
{
delimiter: ",",
fill: ["#4D89F9"],
height: 16,
min: 0,
padding: 0.1,
width: 32
},
function(opts) {
var values = this.values()
, max = Math.max.apply(Math, opts.max == undefined ? values : values.concat(opts.max))
, min = Math.min.apply(Math, opts.min == undefined ? values : values.concat(opts.min))
var $svg = this.prepare(opts.width, opts.height)
, width = $svg.width()
, height = $svg.height()
, diff = max - min
, padding = opts.padding
, fill = this.fill()
var xScale = this.x = function(input) {
return input * width / values.length
}
var yScale = this.y = function(input) {
return height - (
diff
? ((input - min) / diff) * height
: 1
)
}
for (var i = 0; i < values.length; i++) {
var x = xScale(i + padding)
, w = xScale(i + 1 - padding) - x
, value = values[i]
, valueY = yScale(value)
, y1 = valueY
, y2 = valueY
, h
if (!diff) {
h = 1
} else if (value < 0) {
y1 = yScale(Math.min(max, 0))
} else {
y2 = yScale(Math.max(min, 0))
}
h = y2 - y1
if (h == 0) {
h = 1
if (max > 0 && diff) y1--
}
$svg.append(
svgElement('rect', {
'data-value': value,
fill: fill.call(this, value, i, values),
x: x,
y: y1,
width: w,
height: h
})
)
}
}
);
})(jQuery, document, Math);
document.addEventListener('DOMContentLoaded', function () {
/* Starts peity
DOC: searches for the class and init. peity based on class
*/
$(".peity-pie").peity("pie");
$('.peity-donut').peity('donut');
$(".peity-line").peity("line");
$(".peity-bar").peity("bar");
});