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Add example combining draw and modify interaction

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tsauerwein
2014-05-26 13:31:14 +02:00
parent 70e3cb3598
commit 88197360c1
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examples/draw-and-modify-features.html Normal file
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="chrome=1">
<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
<link rel="stylesheet" href="../css/ol.css" type="text/css">
<link rel="stylesheet" href="../resources/bootstrap/css/bootstrap.min.css" type="text/css">
<link rel="stylesheet" href="../resources/layout.css" type="text/css">
<link rel="stylesheet" href="../resources/bootstrap/css/bootstrap-responsive.min.css" type="text/css">
<title>Draw and modify features example</title>
</head>
<body>
<div class="navbar navbar-inverse navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<a class="brand" href="./"><img src="../resources/logo.png"> OpenLayers 3 Examples</a>
</div>
</div>
</div>
<div class="container-fluid">
<div class="row-fluid">
<div class="span12">
<div id="map" class="map"></div>
</div>
</div>
<div class="row-fluid">
<div class="span12">
<h4 id="title">Draw and modify features example</h4>
<p id="shortdesc">Example of using the ol.interaction.Draw interaction together with
the ol.interaction.Modify interaction.</p>
<form class="form-inline">
<label>Geometry type &nbsp;</label>
<select id="type">
<option value="Point">Point</option>
<option value="LineString">LineString</option>
<option value="Polygon">Polygon</option>
</select>
</form>
<div id="docs">
<p>See the <a href="draw-and-modify-features.js" target="_blank">draw-and-modify-features.js source</a> to see how this is done.</p>
</div>
<div id="tags">draw, edit, modify, vector, featureoverlay</div>
</div>
</div>
</div>
<script src="jquery.min.js" type="text/javascript"></script>
<script src="../resources/example-behaviour.js" type="text/javascript"></script>
<script src="loader.js?id=draw-and-modify-features" type="text/javascript"></script>
</body>
</html>

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examples/draw-and-modify-features.js Normal file
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goog.require('ol.FeatureOverlay');
goog.require('ol.Map');
goog.require('ol.View2D');
goog.require('ol.events.condition');
goog.require('ol.interaction');
goog.require('ol.interaction.Draw');
goog.require('ol.interaction.Modify');
goog.require('ol.layer.Tile');
goog.require('ol.source.MapQuest');
goog.require('ol.style.Circle');
goog.require('ol.style.Fill');
goog.require('ol.style.Stroke');
goog.require('ol.style.Style');
var raster = new ol.layer.Tile({
source: new ol.source.MapQuest({layer: 'sat'})
});
var map = new ol.Map({
layers: [raster],
target: 'map',
view: new ol.View2D({
center: [-11000000, 4600000],
zoom: 4
})
});
// The features are not added to a regular vector layer/source,
// but to a feature overlay which holds a collection of features.
// This collection is passed to the modify and also the draw
// interaction, so that both can add or modify features.
var featureOverlay = new ol.FeatureOverlay({
style: new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(255, 255, 255, 0.2)'
}),
stroke: new ol.style.Stroke({
color: '#ffcc33',
width: 2
}),
image: new ol.style.Circle({
radius: 7,
fill: new ol.style.Fill({
color: '#ffcc33'
})
})
})
});
featureOverlay.setMap(map);
var modify = new ol.interaction.Modify({
features: featureOverlay.getFeatures(),
// the SHIFT key must be pressed to delete vertices, so
// that new vertices can be drawn at the same position
// of existing vertices
deleteCondition: function(event) {
return ol.events.condition.shiftKeyOnly(event) &&
ol.events.condition.singleClick(event);
}
});
map.addInteraction(modify);
var draw; // global so we can remove it later
function addInteraction() {
draw = new ol.interaction.Draw({
features: featureOverlay.getFeatures(),
type: /** @type {ol.geom.GeometryType} */ (typeSelect.value)
});
map.addInteraction(draw);
}
var typeSelect = document.getElementById('type');
/**
* Let user change the geometry type.
* @param {Event} e Change event.
*/
typeSelect.onchange = function(e) {
map.removeInteraction(draw);
addInteraction();
};
addInteraction();