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Canvas+SVG hover stroke effect
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| border: none | |
| height: 600 |
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> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title></title> | |
| <style> | |
| path { | |
| stroke-linecap: round; | |
| stroke-linejoin: round; | |
| } | |
| .municipalities { | |
| visibility: hidden; | |
| stroke: black; | |
| stroke-width:2; | |
| fill:none; | |
| pointer-events: all; | |
| } | |
| .municipalities.active { | |
| visibility: visible; | |
| } | |
| svg, | |
| canvas { | |
| position: absolute; | |
| top: 0; | |
| left: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <!DOCTYPE html> | |
| <canvas width="960" height="600"></canvas> | |
| <svg width="960" height="600"></svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://d3js.org/topojson.v2.min.js"></script> | |
| <script src="https://unpkg.com/d3-composite-projections@1.0.2"></script> | |
| <script> | |
| var context = d3.select("canvas").node().getContext("2d"), | |
| svg = d3.select("svg"), | |
| width = 960, | |
| height = 600, | |
| path = d3.geoPath(), | |
| canvasPath = d3.geoPath().context(context); | |
| d3.queue() | |
| .defer(d3.json, 'https://gist.githubusercontent.com/LuisSevillano/acce972dd718af898b2c2875bc4e4167/raw/8813c93f7b66366e6bd2f9b1937be0cac24ff59b/municipalities.json') | |
| .defer(d3.csv, 'https://gist.githubusercontent.com/LuisSevillano/acce972dd718af898b2c2875bc4e4167/raw/8813c93f7b66366e6bd2f9b1937be0cac24ff59b/municipalities_population.csv') | |
| .await(function(error, es, population) { | |
| // loop through the csv to create a new object accesible by ids | |
| var data = []; | |
| population.forEach(function(d){ | |
| data[d.id] = {"id":d.id,"rate":+d.rate}; | |
| }); | |
| color = d3.scaleThreshold() | |
| .range(['#d0e4f1','#c0d6e9','#afc7e1','#9fb8da','#8eaad2','#7d9ccb','#6c90c3','#5982bc','#4575b4']) | |
| .domain([5, 9, 19, 49, 74, 124, 249, 499, 1000]); | |
| features = topojson.feature(es, es.objects.municipalities).features; | |
| for (var i = 0; i < features.length; i++) { | |
| if (data[features[i].id]) { | |
| context.fillStyle = color(data[features[i].id].rate); | |
| context.beginPath() | |
| canvasPath(features[i]) | |
| context.fill() | |
| } | |
| } | |
| svg.selectAll(".municipalities") | |
| .data(features) | |
| .enter() | |
| .append("path") | |
| .attr('d', path) | |
| .attr('class', 'municipalities') | |
| .on("mouseover", function(d){ | |
| d3.select(this).classed('active', true) | |
| }) | |
| .on("mouseout", function(d){ | |
| d3.select(this).classed('active', false) | |
| }); | |
| // border | |
| context.beginPath() | |
| canvasPath(topojson.feature(es, es.objects.nation)) | |
| context.strokeStyle = "rgb(100, 100, 100)"; | |
| context.stroke() | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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