Loading indicator for a donut chart
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September 18, 2016 17:24
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Loading Indicator for Donut Chart
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| license: gpl-3.0 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE HTML> | |
| <meta charset="utf-8"> | |
| <html> | |
| <style> | |
| body { | |
| font: 10px sans-serif; | |
| } | |
| div { | |
| padding-left: 100px; | |
| padding-top: 10px; | |
| width: 30%; | |
| margin: 0 auto; | |
| font: 14px; | |
| } | |
| input { | |
| border-top: 0; | |
| border-left: 0; | |
| border-right: 0; | |
| text-align: center; | |
| font: 14px; | |
| width: 60px; | |
| } | |
| </style> | |
| <body> | |
| <script src="https://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| // draw and append the container | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width).attr("height", height); | |
| // set the thickness of the inner and outer radii | |
| var min = Math.min(width, height); | |
| var oRadius = min / 2 * 0.9; | |
| var iRadius = min / 2 * 0.6; | |
| var cornerRadius = 1; | |
| // construct default pie laoyut | |
| var pie = d3.layout.pie().value(function(d){ return d; }); | |
| // construct arc generator | |
| var arc = d3.svg.arc() | |
| .outerRadius(oRadius) | |
| .innerRadius(iRadius) | |
| .cornerRadius(cornerRadius); | |
| // creates the pie chart container | |
| var g = svg.append('g') | |
| .attr('transform', function(){ | |
| if ( window.innerWidth >= 960 ) var shiftWidth = width / 2; | |
| if ( window.innerWidth < 960 ) var shiftWidth = width / 3; | |
| return 'translate(' + shiftWidth + ',' + height / 2 + ')'; | |
| }) | |
| // enter data and draw pie chart | |
| var path = g.datum([1]).selectAll("path") | |
| .data(pie) | |
| .enter().append("path") | |
| .attr("class","piechart") | |
| .attr("fill", '#e2e2e2') | |
| .attr("d", arc) | |
| g.append("circle") | |
| .style("fill", "#00a1dc") | |
| .style("stroke", "white") | |
| .style("stroke-width", 8) | |
| .attr("class", 'loading-dot') | |
| .attr("r", (oRadius - iRadius)/2) | |
| .attr("cx", 0) | |
| .attr("cy", -(iRadius + (oRadius - iRadius)/2)); | |
| rotation(); | |
| function rotation() { | |
| var circle = d3.select('.loading-dot'); | |
| (function repeat() { | |
| var r = (iRadius + (oRadius - iRadius)/2); | |
| var positions = d3.range(-0.5*Math.PI, 1.5*Math.PI, Math.PI/30).map(function(a){ | |
| var cx = r * Math.cos(a); | |
| var cy = r * Math.sin(a); | |
| return {cx: cx, cy: cy}; | |
| }); | |
| var counter = 0; | |
| interval = setInterval(function(){ | |
| var position = positions[counter]; | |
| circle | |
| .attr("cx", position.cx) | |
| .attr("cy", position.cy) | |
| counter++; | |
| if (counter === positions.length){ | |
| clearInterval(interval); | |
| rotation(); | |
| } | |
| }, 15) | |
| })(); | |
| } | |
| </script> | |
| </body> |
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