1 files changed, 63 insertions, 0 deletions
diff --git a/misc/openlayers/examples/mousewheel-interval.html b/misc/openlayers/examples/mousewheel-interval.html
new file mode 100644
index 0000000..ce8d6a6
--- /dev/null
+++ b/misc/openlayers/examples/mousewheel-interval.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <title>OpenLayers Mousewheel Interval Example</title>
+    <link rel="stylesheet" href="../theme/default/style.css" type="text/css">
+    <link rel="stylesheet" href="style.css" type="text/css">
+    <script src="../lib/OpenLayers.js"></script>
+    <script type="text/javascript">
+        var map, layer;
+
+        function setCumulative() {
+            var nav = map.getControlsByClass("OpenLayers.Control.Navigation")[0];
+            var cumulative = document.getElementById("cumulative");
+            nav.handlers.wheel.cumulative = cumulative.checked;
+        }
+
+        function init(){
+            map = new OpenLayers.Map( 'map', {controls: [
+                new OpenLayers.Control.Navigation(
+                    {mouseWheelOptions: {interval: 100}}
+                ),
+                new OpenLayers.Control.PanZoom(),
+                new OpenLayers.Control.ArgParser(),
+                new OpenLayers.Control.Attribution()
+            ]} );
+            layer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
+                    "http://vmap0.tiles.osgeo.org/wms/vmap0",
+                    {layers: 'basic'} );
+            map.addLayer(layer);
+            map.zoomToMaxExtent();
+        }
+    </script>
+  </head>
+  <body onload="init()">
+    <h1 id="title">OpenLayers Mousewheel Interval Example</h1>
+
+    <div id="tags">
+        performance, zoom by wheel
+    </div>
+
+    <div id="shortdesc">Let OpenLayers send less tile requests to the server when wheel-zooming.</div>
+
+    <div id="map" class="smallmap"></div>
+
+    <div id="docs">
+        <p>This example shows how to configure the Navigation control to use 
+        the mousewheel in a less server resource consuming way: as long as you
+        spin the mousewheel, no request will be sent to the server. Instead,
+        the zoomlevel delta will be recorded. After a delay (in this example
+        100ms), a zoom action with the cumulated delta will be performed.</p>
+        <div>
+          <input id="cumulative" type="checkbox" checked="checked"
+                 onchange="setCumulative()"/>
+          <label for="cumulative">Cumulative mode. If this mode is deactivated, 
+            only one zoom event will be performed after the delay.</label>
+        </div>
+
+    </div>
+  </body>
+</html>