mirror of
https://github.com/Viglino/ol-ext.git
synced 2026-01-25 17:36:21 +00:00
137 lines
4.0 KiB
HTML
137 lines
4.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<!--
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Copyright (c) 2016-2018 Jean-Marc VIGLINO,
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released under CeCILL-B (french BSD like) licence: http://www.cecill.info/
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-->
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<title>ol-ext: Magnify overlay</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="description" content="iconic font and scalable vector icons for OL3" />
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<meta name="keywords" content="ol3, overlay, magnify, glass, zoom" />
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<!-- jQuery -->
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<script type="text/javascript" src="https://code.jquery.com/jquery-1.11.0.min.js"></script>
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<!-- Openlayers -->
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@latest/ol.css" />
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<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@latest/dist/ol.js"></script>
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<!-- ol-ext -->
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<link rel="stylesheet" href="../../dist/ol-ext.min.css" />
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<script type="text/javascript" src="../../dist/ol-ext.js"></script>
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<!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
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<script src="https://unpkg.com/elm-pep"></script>
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<link rel="stylesheet" href="../style.css" />
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<style>
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.oview {
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color: #fff;
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background: #369;
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padding: 0.5em;
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display: inline-block;
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margin-right: 0.5em;
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}
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</style>
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</head>
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<body>
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<a href="https://github.com/Viglino/ol-ext" class="icss-github-corner"><i></i></a>
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<a href="../../index.html">
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<h1>ol-ext: Magnify overlay</h1>
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</a>
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<div class="info">
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The <i>ol/Overlay/Magnify</i> add a "magnifying glass" effect to a map that displays
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a portion of the map at a different zoom (and actually display different content).
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<br/>
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The magnifying glass can be placed outside the map's viewport using the target as for a control.
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</div>
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<!-- the map -->
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<div id="map" style="width:600px; height:400px;"></div>
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<div>
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<div class="oview">
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External magnify
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<div class="overview" style="width:150px; height:150px;"></div>
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</div>
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</div>
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<div class="options">
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Zoom offset: <input id="zoom" type="number" value="1" step="0.5" style="width:4em" />
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<br />
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Layer:
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<select onchange="setOVLayer(this.value)">
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<option value="0">OSM</option>
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<option value="1" selected>IGN</option>
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</select>
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</div>
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<script type="text/javascript">
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// The map
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var map=new ol.Map ({
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target: 'map',
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view: new ol.View ({
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zoom: 15,
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center: [270148, 6247782]
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}),
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layers: [ new ol.layer.Geoportail({ layer: 'GEOGRAPHICALGRIDSYSTEMS.PLANIGNV2' }) ]
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});
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// Layers for the overview
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var layersOV1 = [
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new ol.layer.Tile({
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source: new ol.source.OSM(),
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// Use preload to have tile when moving
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preload: 12
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}),
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new ol.layer.Geoportail({
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layer: 'GEOGRAPHICALGRIDSYSTEMS.PLANIGNV2',
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// Use preload to have tile when moving
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preload: 12
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})
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];
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var layersOV2 = [
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new ol.layer.Tile({ source: new ol.source.OSM() }),
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new ol.layer.Geoportail({
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layer: 'GEOGRAPHICALGRIDSYSTEMS.PLANIGNV2',
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// Use preload to have tile when moving
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preload: 12
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})
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];
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setOVLayer($(".options select").val());
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// New control on the map
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var ov = new ol.Overlay.Magnify({
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layers: layersOV1,
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zoomOffset: Number($("#zoom").val()),
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});
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map.addOverlay(ov);
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var ov2 = new ol.Overlay.Magnify({
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layers: layersOV2,
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target: $(".overview").get(0),
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zoomOffset: Number($("#zoom").val()),
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});
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map.addOverlay(ov2);
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// Options changes
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function setOVLayer (n) {
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layersOV1[n].setVisible(true);
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layersOV1[1-n].setVisible(false);
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layersOV2[n].setVisible(true);
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layersOV2[1-n].setVisible(false);
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}
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$("#zoom").on("change", function () {
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ov.set("zoomOffset", Number($("#zoom").val()));
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ov2.set("zoomOffset", Number($("#zoom").val()));
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});
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</script>
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</body>
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</html> |