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Hover map tooltip
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license: mit |
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"> | |
<style> | |
.province { | |
fill: #000; | |
stroke: #fff; | |
stroke-width: 1px; | |
} | |
.province:hover { | |
fill: #666; | |
} | |
.hidden { | |
display: none; | |
} | |
div.tooltip { | |
color: #222; | |
background-color: #fff; | |
padding: .5em; | |
text-shadow: #f5f5f5 0 1px 0; | |
border-radius: 2px; | |
opacity: 0.9; | |
position: absolute; | |
} | |
</style> | |
<body> | |
<script src="https://d3js.org/d3.v5.min.js"></script> | |
<script src="https://d3js.org/topojson.v1.min.js"></script> | |
<script> | |
var width = 690, | |
height = 580; | |
var svg = d3.select('body').append('svg') | |
.attr('width', width) | |
.attr('height', height); | |
var tooltip = d3.select('body').append('div') | |
.attr('class', 'hidden tooltip'); | |
var projection = d3.geoAlbers() | |
.center([45.4, 75.5]) | |
.parallels([45, 70]) | |
.scale(800) | |
.translate([0.65 * width, 0.10 * height]); | |
var path = d3.geoPath() | |
.projection(projection); | |
d3.json('https://raw.githubusercontent.com/codeforamerica/click_that_hood/master/public/data/canada.geojson').then(function(jsondata) { | |
svg.selectAll('.province') | |
.data(jsondata.features) | |
.enter().append('path') | |
.attr('class', function(d) { | |
// chaque forme representant un etat aura | |
// deux classes province et un identifiant venant du json | |
return 'province ' + d.properties.cartodb_id; | |
}) | |
.attr('d', path) // on cree la forme de l'etat | |
.on('mousemove', function(d) { | |
// on recupere la position de la souris | |
var mousePosition = d3.mouse(this); | |
// on affiche le toolip | |
tooltip.classed('hidden', false) | |
// on positionne le tooltip en fonction | |
// de la position de la souris | |
.attr('style', 'left:' + (mousePosition[0] + 15) + | |
'px; top:' + (mousePosition[1] - 35) + 'px') | |
// on recupere le nom de l'etat | |
.html(d.properties.name); | |
}) | |
.on('mouseout', function() { | |
// on cache le toolip | |
tooltip.classed('hidden', true); | |
}); | |
}); | |
</script> | |
</body> |
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