Adapted from Mike Bostocks's drag slider.
Last active
November 10, 2017 09:29
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Date slider
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| license: mit |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { | |
| font-family:"avenir next", Arial, sans-serif; | |
| font-size: 12px; | |
| color: #696969; | |
| } | |
| .ticks { | |
| font-size: 10px; | |
| } | |
| .track, | |
| .track-inset, | |
| .track-overlay { | |
| stroke-linecap: round; | |
| } | |
| .track { | |
| stroke: #000; | |
| stroke-opacity: 0.3; | |
| stroke-width: 10px; | |
| } | |
| .track-inset { | |
| stroke: #ddd; | |
| stroke-width: 8px; | |
| } | |
| .track-overlay { | |
| pointer-events: stroke; | |
| stroke-width: 50px; | |
| stroke: transparent; | |
| cursor: crosshair; | |
| } | |
| .handle { | |
| fill: #fff; | |
| stroke: #000; | |
| stroke-opacity: 0.5; | |
| stroke-width: 1.25px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="slider"></div> | |
| <script> | |
| var formatDateIntoYear = d3.timeFormat("%Y"); | |
| var formatDate = d3.timeFormat("%b %Y"); | |
| var startDate = new Date("2004-11-01"), | |
| endDate = new Date("2017-04-01"); | |
| var margin = {top:0, right:50, bottom:0, left:50}, | |
| width = 960 -margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var svg = d3.select("#slider") | |
| .append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height); | |
| var x = d3.scaleTime() | |
| .domain([startDate, endDate]) | |
| .range([0, width]) | |
| .clamp(true); | |
| var slider = svg.append("g") | |
| .attr("class", "slider") | |
| .attr("transform", "translate(" + margin.left + "," + height / 2 + ")"); | |
| slider.append("line") | |
| .attr("class", "track") | |
| .attr("x1", x.range()[0]) | |
| .attr("x2", x.range()[1]) | |
| .select(function() { return this.parentNode.appendChild(this.cloneNode(true)); }) | |
| .attr("class", "track-inset") | |
| .select(function() { return this.parentNode.appendChild(this.cloneNode(true)); }) | |
| .attr("class", "track-overlay") | |
| .call(d3.drag() | |
| .on("start.interrupt", function() { slider.interrupt(); }) | |
| .on("start drag", function() { hue(x.invert(d3.event.x)); })); | |
| slider.insert("g", ".track-overlay") | |
| .attr("class", "ticks") | |
| .attr("transform", "translate(0," + 18 + ")") | |
| .selectAll("text") | |
| .data(x.ticks(10)) | |
| .enter() | |
| .append("text") | |
| .attr("x", x) | |
| .attr("y", 10) | |
| .attr("text-anchor", "middle") | |
| .text(function(d) { return formatDateIntoYear(d); }); | |
| var label = slider.append("text") | |
| .attr("class", "label") | |
| .attr("text-anchor", "middle") | |
| .text(formatDate(startDate)) | |
| .attr("transform", "translate(0," + (-25) + ")") | |
| var handle = slider.insert("circle", ".track-overlay") | |
| .attr("class", "handle") | |
| .attr("r", 9); | |
| function hue(h) { | |
| handle.attr("cx", x(h)); | |
| label | |
| .attr("x", x(h)) | |
| .text(formatDate(h)); | |
| svg.style("background-color", d3.hsl(h/1000000000, 0.8, 0.8)); | |
| } | |
| </script> | |
| </body> |
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