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Full example of using leaflet to pan and zoom a big image, as described at http://kempe.net/blog/2014/06/14/leaflet-pan-zoom-image.html
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| <html> | |
| <!-- See also: http://kempe.net/blog/2014/06/14/leaflet-pan-zoom-image.html --> | |
| <head> | |
| <link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.css"></script> | |
| <style> | |
| #image-map { | |
| width: 100%; | |
| height: 300px; | |
| border: 1px solid #ccc; | |
| margin-bottom: 10px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="image-map"></div> | |
| <script src="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.js"></script> | |
| <script> | |
| // 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); | |
| </script> | |
| </body> | |
| </html> |
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