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Zoom Slider
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| var zoomSlider = document.getElementById('zoom'); | |
| var zoomValue = document.getElementById('zoomvalue'); | |
| var map, targetZoom; | |
| var initMap = function() { | |
| var template = 'http://{S}tile.openstreetmap.org/{Z}/{X}/{Y}.png'; | |
| var subdomains = ['', 'a.', 'b.', 'c.']; | |
| var provider = new MM.TemplatedLayer(template, subdomains); | |
| map = new MM.Map('map', provider, null); | |
| map.setCenterZoom(new MM.Location(37.811530, -122.2666097), 9); | |
| targetZoom = map.getZoom(); | |
| zoomSlider.onchange = function() { | |
| var sliderProp = (zoomSlider.value - zoomSlider.min) / (zoomSlider.max - zoomSlider.min); | |
| targetZoom = sliderProp * 18.0; | |
| MM.getFrame(animateToZoom); | |
| }; | |
| zoomValue.innerHTML = targetZoom; | |
| map.addCallback('zoomed', function(){ | |
| zoomValue.innerHTML = map.getZoom().toFixed(2); | |
| zoomSlider.value = map.getZoom() * 1000; | |
| }); | |
| } | |
| var animateToZoom = function() { | |
| var currentZoom = map.getZoom(); | |
| var nextZoom = currentZoom + (targetZoom - currentZoom) * 0.2; | |
| if (Math.abs(nextZoom - currentZoom) < 0.001) { | |
| nextZoom = currentZoom; | |
| } else { | |
| MM.getFrame(animateToZoom); | |
| } | |
| map.setZoom(nextZoom); | |
| zoomValue.innerHTML = nextZoom.toFixed(2); | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset=utf-8 /> | |
| <title>Modest Maps JS Demo | Slide Zoom</title> | |
| <link rel='stylesheet' href='style.css'> | |
| </head> | |
| <body onload='initMap()'> | |
| <div id='map'></div> | |
| <form id='zoom-control'> | |
| <label for='zoom'>Zoom in: </label><span id='zoomvalue'></span> | |
| <input id='zoom' type='range' value='10000' min='0' max='18000'></input> | |
| </form> | |
| <script src='https://rawgithub.com/stamen/modestmaps-js/master/modestmaps.min.js'></script> | |
| <script src='app.js'></script> | |
| </body> | |
| </html> |
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| body { | |
| font: 13px/22px 'Helvetica Neue', Helvetica, sans; | |
| margin: 0; | |
| padding: 0; | |
| } | |
| label { | |
| font-weight: bold; | |
| font-size: 11px; | |
| } | |
| input { | |
| display: block; | |
| } | |
| #map { | |
| position: absolute; | |
| top: 0; left: 0; | |
| width: 100%; | |
| height: 100%; | |
| } | |
| #zoom-control { | |
| background: #fff; | |
| border: 1px solid #808080; | |
| -moz-border-radius: 4px; | |
| border-radius: 4px; | |
| padding: 10px; | |
| position: absolute; | |
| left: 20px; top: 20px; | |
| z-index: 99999999999; | |
| } |
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