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Using leaflet.js to pan and zoom a big image - http://kempe.net/blog/2014/06/14/leaflet-pan-zoom-image.html
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// Using leaflet.js to pan and zoom a big image. | |
// See also: http://kempe.net/blog/2014/06/14/leaflet-pan-zoom-image.html | |
// create the slippy map | |
var map = L.map('image-map', { | |
minZoom: 1, | |
maxZoom: 4, | |
center: [0, 0], | |
zoom: 1, | |
crs: L.CRS.Simple | |
}); | |
// dimensions of the image | |
var w = 2000, | |
h = 1500, | |
url = 'http://kempe.net/images/newspaper-big.jpg'; | |
// calculate the edges of the image, in coordinate space | |
var southWest = map.unproject([0, h], map.getMaxZoom()-1); | |
var northEast = map.unproject([w, 0], map.getMaxZoom()-1); | |
var bounds = new L.LatLngBounds(southWest, northEast); | |
// add the image overlay, | |
// so that it covers the entire map | |
L.imageOverlay(url, bounds).addTo(map); | |
// tell leaflet that the map is exactly as big as the image | |
map.setMaxBounds(bounds); |
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<style> | |
#image-map { | |
width: 100%; | |
height: 300px; | |
border: 1px solid #ccc; | |
margin-bottom: 10px; | |
} | |
</style> | |
<div id="image-map"></div> |
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