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pie-donut.html
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pie-donut.html
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<!--
@license
Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<link rel="import" href="../polymer/polymer.html">
<link rel="import" href="../import-d3/import-d3.html">
<!--
An element providing a solution to no problem in particular.
Example:
<pie-donut></pie-donut>
@demo
-->
<dom-module id="pie-donut">
<style is="custom-style">
:host {
display: block;
box-sizing: border-box;
}
.arc path {
stroke: #fff;
}
.pieDonut{
text-anchor:middle;
font-size:0.7em;
}
</style>
<template>
<div id="{{elementId}}" class="pieDonut"></div>
</template>
</dom-module>
<script>
Polymer({
is: 'pie-donut',
properties: {
data:{
type:Array,
value:[[10,'hi'],[90,'was'],[50,'los']],
observer:'update'
},
radius:{
type:Number,
value:300,
observer:'update'
},
innerRadius:{
type:Number,
value:200
},
chartHeight:{
type:Number,
value:600
},
chartWidth:{
type:Number,
value:600
},
colorRange:{
type:Array,
value:["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]
},
elementId:{
type:String,
value:''
}
},
attached:function(){
this.elementId = 'd3PieDonut_' + String(new Date().getTime());
this.plot();
},
update:function(){
if (this.elementId) {
this.plot();
};
},
plot:function(){
document.getElementById(this.elementId).innerHTML = '';
var color = d3.scale.ordinal()
.range(this.colorRange);
var canvas = d3.select('#' + this.elementId).append('svg')
.attr('width',this.chartWidth)
.attr('height',this.chartHeight);
var group = canvas.append('g')
.attr('transform','translate(' + this.radius + ',' + this.radius + ')');
var arc = d3.svg.arc()
.innerRadius(this.innerRadius)
.outerRadius(this.radius);
var pie = d3.layout.pie()
.value(function(d) { return d[0]; });
var arcs = group.selectAll('.arc')
.data(pie(this.data))
.enter()
.append('g')
.attr('class','arc');
arcs.append('path')
.attr('d', arc)
.attr('fill',function (d) { return color(d.data[0]); });
arcs.append('text')
.attr('transform', function (d) { return 'translate(' + arc.centroid(d) + ')'; })
.attr('class','label')
.text(function(d) { return d.data[1]; });
}
});
</script>