248 lines
9.5 KiB
HTML
248 lines
9.5 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="chrome=1">
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<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css" type="text/css">
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" type="text/css">
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<link rel="stylesheet" href="./resources/prism/prism.css" type="text/css">
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<link rel="stylesheet" href="../css/ol.css" type="text/css">
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<link rel="stylesheet" href="./resources/layout.css" type="text/css">
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<script src="./resources/zeroclipboard/ZeroClipboard.min.js"></script>
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<title>Box selection example</title>
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</head>
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<body>
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<header class="navbar" role="navigation">
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<div class="container" id="navbar-inner-container">
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<a class="navbar-brand" href="./"><img src="./resources/logo-70x70.png"> OpenLayers 3 Examples</a>
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</div>
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</header>
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<div class="container-fluid">
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<div class="row-fluid">
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<div class="span12">
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<div id="map" class="map"></div>
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</div>
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<div class="span4 offset4 pull-right">
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<div id="info" class="alert alert-success">
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</div>
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</div>
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</div>
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<div class="row-fluid">
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<div class="span12">
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<h4 id="title">Box selection example</h4>
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<p id="shortdesc">Using a DragBox interaction to select features.</p>
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<div id="docs"><p>This example shows how to use a <code>DragBox</code> interaction to select features. Selected features are added to the feature overlay of a select interaction (<code>ol.interaction.Select</code>) for highlighting.</p> <p>Use <code>SHIFT+drag</code> to draw boxes.</p>
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</div>
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<div id="tags">DragBox, feature, selection, box</div>
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<div id="api-links">Related API documentation: <ul class="inline"><li><a href="../apidoc/ol.Map.html" title="API documentation for ol.Map">ol.Map</a></li>,<li><a href="../apidoc/ol.View.html" title="API documentation for ol.View">ol.View</a></li>,<li><a href="../apidoc/ol.events.condition.html" title="API documentation for ol.events.condition">ol.events.condition</a></li>,<li><a href="../apidoc/ol.format.GeoJSON.html" title="API documentation for ol.format.GeoJSON">ol.format.GeoJSON</a></li>,<li><a href="../apidoc/ol.interaction.DragBox.html" title="API documentation for ol.interaction.DragBox">ol.interaction.DragBox</a></li>,<li><a href="../apidoc/ol.interaction.Select.html" title="API documentation for ol.interaction.Select">ol.interaction.Select</a></li>,<li><a href="../apidoc/ol.layer.Tile.html" title="API documentation for ol.layer.Tile">ol.layer.Tile</a></li>,<li><a href="../apidoc/ol.layer.Vector.html" title="API documentation for ol.layer.Vector">ol.layer.Vector</a></li>,<li><a href="../apidoc/ol.source.OSM.html" title="API documentation for ol.source.OSM">ol.source.OSM</a></li>,<li><a href="../apidoc/ol.source.Vector.html" title="API documentation for ol.source.Vector">ol.source.Vector</a></li>,<li><a href="../apidoc/ol.style.Stroke.html" title="API documentation for ol.style.Stroke">ol.style.Stroke</a></li>,<li><a href="../apidoc/ol.style.Style.html" title="API documentation for ol.style.Style">ol.style.Style</a></li></ul></div>
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</div>
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</div>
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<div class="row-fluid">
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<div id="source-controls">
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<a id="copy-button"><i class="fa fa-clipboard"></i> Copy</a>
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<a id="jsfiddle-button"><i class="fa fa-jsfiddle"></i> Edit</a>
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</div>
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<form method="POST" id="jsfiddle-form" target="_blank" action="http://jsfiddle.net/api/post/jquery/1.11.0/">
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<textarea class="hidden" name="js">var vectorSource = new ol.source.Vector({
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url: 'data/geojson/countries.geojson',
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format: new ol.format.GeoJSON()
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});
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var map = new ol.Map({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.OSM()
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}),
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new ol.layer.Vector({
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source: vectorSource
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})
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],
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renderer: 'canvas',
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target: 'map',
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view: new ol.View({
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center: [0, 0],
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zoom: 2
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})
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});
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// a normal select interaction to handle click
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var select = new ol.interaction.Select();
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map.addInteraction(select);
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var selectedFeatures = select.getFeatures();
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// a DragBox interaction used to select features by drawing boxes
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var dragBox = new ol.interaction.DragBox({
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condition: ol.events.condition.shiftKeyOnly,
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style: new ol.style.Style({
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stroke: new ol.style.Stroke({
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color: [0, 0, 255, 1]
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})
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})
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});
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map.addInteraction(dragBox);
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var infoBox = document.getElementById('info');
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dragBox.on('boxend', function(e) {
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// features that intersect the box are added to the collection of
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// selected features, and their names are displayed in the "info"
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// div
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var info = [];
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var extent = dragBox.getGeometry().getExtent();
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vectorSource.forEachFeatureIntersectingExtent(extent, function(feature) {
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selectedFeatures.push(feature);
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info.push(feature.get('name'));
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});
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if (info.length > 0) {
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infoBox.innerHTML = info.join(', ');
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}
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});
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// clear selection when drawing a new box and when clicking on the map
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dragBox.on('boxstart', function(e) {
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selectedFeatures.clear();
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infoBox.innerHTML = '&nbsp;';
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});
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map.on('click', function() {
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selectedFeatures.clear();
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infoBox.innerHTML = '&nbsp;';
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});
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</textarea>
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<textarea class="hidden" name="css"></textarea>
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<textarea class="hidden" name="html"><div class="row-fluid">
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<div class="span12">
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<div id="map" class="map"></div>
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</div>
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<div class="span4 offset4 pull-right">
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<div id="info" class="alert alert-success">
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&nbsp;
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</div>
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</div>
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</div>
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</textarea>
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<input type="hidden" name="wrap" value="l">
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<input type="hidden" name="resources" value="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css,https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js,http://openlayers.org/en/v3.9.0/css/ol.css,http://openlayers.org/en/v3.9.0/build/ol.js">
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</form>
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<pre><code id="example-source" class="language-markup"><!DOCTYPE html>
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<html>
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<head>
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<title>Box selection example</title>
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<script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
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<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
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<link rel="stylesheet" href="http://openlayers.org/en/v3.9.0/css/ol.css" type="text/css">
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<script src="http://openlayers.org/en/v3.9.0/build/ol.js"></script>
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</head>
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<body>
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<div class="container-fluid">
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<div class="row-fluid">
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<div class="span12">
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<div id="map" class="map"></div>
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</div>
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<div class="span4 offset4 pull-right">
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<div id="info" class="alert alert-success">
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&nbsp;
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</div>
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</div>
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</div>
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</div>
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<script>
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var vectorSource = new ol.source.Vector({
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url: 'data/geojson/countries.geojson',
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format: new ol.format.GeoJSON()
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});
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var map = new ol.Map({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.OSM()
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}),
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new ol.layer.Vector({
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source: vectorSource
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})
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],
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renderer: 'canvas',
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target: 'map',
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view: new ol.View({
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center: [0, 0],
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zoom: 2
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})
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});
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// a normal select interaction to handle click
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var select = new ol.interaction.Select();
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map.addInteraction(select);
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var selectedFeatures = select.getFeatures();
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// a DragBox interaction used to select features by drawing boxes
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var dragBox = new ol.interaction.DragBox({
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condition: ol.events.condition.shiftKeyOnly,
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style: new ol.style.Style({
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stroke: new ol.style.Stroke({
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color: [0, 0, 255, 1]
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})
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})
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});
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map.addInteraction(dragBox);
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var infoBox = document.getElementById('info');
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dragBox.on('boxend', function(e) {
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// features that intersect the box are added to the collection of
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// selected features, and their names are displayed in the "info"
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// div
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var info = [];
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var extent = dragBox.getGeometry().getExtent();
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vectorSource.forEachFeatureIntersectingExtent(extent, function(feature) {
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selectedFeatures.push(feature);
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info.push(feature.get('name'));
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});
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if (info.length > 0) {
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infoBox.innerHTML = info.join(', ');
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}
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});
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// clear selection when drawing a new box and when clicking on the map
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dragBox.on('boxstart', function(e) {
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selectedFeatures.clear();
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infoBox.innerHTML = '&nbsp;';
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});
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map.on('click', function() {
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selectedFeatures.clear();
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infoBox.innerHTML = '&nbsp;';
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});
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</script>
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</body>
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</html></code></pre>
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</div>
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</div>
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<script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
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<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
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<script src="./resources/common.js"></script>
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<script src="./resources/prism/prism.min.js"></script>
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<script src="loader.js?id=box-selection"></script>
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</body>
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</html>
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