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Merge pull request #982 from tschaub/moveend

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Fire a moveend event when the view settles.
This commit is contained in:
Tim Schaub
2013-09-10 16:36:31 -07:00
parent 643e4592c5 6617969d36
commit c845d85a31
4 changed files with 115 additions and 1 deletions
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59
examples/moveend.html Normal file
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@@ -0,0 +1,59 @@
<!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>Moveend Example</title>
</head>
<body>
<div class="navbar navbar-inverse navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<a class="brand" href="./">OpenLayers 3 Examples</a>
<ul class="nav pull-right">
<li><iframe class="github-watch-button" src="http://ghbtns.com/github-btn.html?user=openlayers&repo=ol3&type=watch&count=true"
allowtransparency="true" frameborder="0" scrolling="0" height="20" width="90"></iframe></li>
<li><a href="https://twitter.com/share" class="twitter-share-button" data-count="none" data-hashtags="openlayers">&nbsp;</a></li>
<li><div class="g-plusone-wrapper"><div class="g-plusone" data-size="medium" data-annotation="none"></div></div></li>
</ul>
</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">Move end example</h4>
<p id="shortdesc">Use of the moveend event.</p>
<div id="docs">
<p>In this example, a listener is registered for the map's <code>moveend</code> event. Whenever this listener is called, it updates the inputs below with the map extent in decimal degrees.</p>
<p>See the <a href="moveend.js" target="_blank">moveend.js source</a> for details on how this is done.</p>
</div>
<div id="tags">moveend, map, event</div>
<label>top</label><input type="text" id="top">
<label>right</label><input type="text" id="right">
<label>bottom</label><input type="text" id="bottom">
<label>left</label><input type="text" id="left">
</div>
</div>
</div>
<script src="loader.js?id=moveend" type="text/javascript"></script>
<script src="../resources/social-links.js" type="text/javascript"></script>
</body>
</html>

45
examples/moveend.js Normal file
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goog.require('ol.Map');
goog.require('ol.RendererHints');
goog.require('ol.View2D');
goog.require('ol.layer.TileLayer');
goog.require('ol.proj');
goog.require('ol.source.OSM');
var map = new ol.Map({
layers: [
new ol.layer.TileLayer({
source: new ol.source.OSM()
})
],
renderers: ol.RendererHints.createFromQueryData(),
target: 'map',
view: new ol.View2D({
center: [0, 0],
zoom: 2
})
});
function display(id, value) {
document.getElementById(id).value = value.toFixed(2);
}
function wrapLon(value) {
var worlds = Math.floor((value + 180) / 360);
return value - (worlds * 360);
}
function onMoveEnd(evt) {
var map = evt.map;
var extent = map.getView().calculateExtent(map.getSize());
var leftBottom = ol.proj.transform(
[extent[0], extent[2]], 'EPSG:3857', 'EPSG:4326');
var rightTop = ol.proj.transform(
[extent[1], extent[3]], 'EPSG:3857', 'EPSG:4326');
display('left', wrapLon(leftBottom[0]));
display('bottom', leftBottom[1]);
display('right', wrapLon(rightTop[0]));
display('top', rightTop[1]);
}
map.on('moveend', onMoveEnd);

9
src/ol/map.js
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@@ -979,6 +979,15 @@ ol.Map.prototype.renderFrame_ = function(time) {
}
Array.prototype.push.apply(
this.postRenderFunctions_, frameState.postRenderFunctions);
var idle = this.preRenderFunctions_.length == 0 &&
!frameState.animate &&
!frameState.viewHints[ol.ViewHint.ANIMATING] &&
!frameState.viewHints[ol.ViewHint.INTERACTING];
if (idle) {
this.dispatchEvent(new ol.MapEvent(ol.MapEventType.MOVEEND, this));
}
}
this.dispatchEvent(

3
src/ol/mapevent.js
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@@ -9,7 +9,8 @@ goog.require('ol.FrameState');
* @enum {string}
*/
ol.MapEventType = {
POSTRENDER: 'postrender'
POSTRENDER: 'postrender',
MOVEEND: 'moveend'
};