Add layer-swipe example

2013-11-13 13:29:02 +01:00
parent b698c5bf7b
commit d65ae078ef
2 changed files with 98 additions and 0 deletions
--- a/examples/layer-swipe.html
+++ b/examples/layer-swipe.html
@@ -0,0 +1,51 @@
+<!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>Layer Swipe 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>
+          <input id="swipe" type="range" style="width: 100%">
+        </div>
+      </div>
+
+      <div class="row-fluid">
+
+        <div class="span12">
+          <h4 id="title">Layer Swipe example</h4>
+          <p id="shortdesc">Example of a Layer swipe map.</p>
+          <div id="docs">
+            <p>See the <a href="layer-swipe.js" target="_blank">layer-swipe.js source</a> to see how this is done.</p>
+          </div>
+          <div id="tags">swipe, openstreetmap</div>
+        </div>
+
+      </div>
+
+    </div>
+
+    <script src="loader.js?id=layer-swipe" type="text/javascript"></script>
+    <script src="../resources/example-behaviour.js" type="text/javascript"></script>
+
+  </body>
+</html>
--- a/examples/layer-swipe.js
+++ b/examples/layer-swipe.js
@@ -0,0 +1,47 @@
+goog.require('ol.Map');
+goog.require('ol.RendererHint');
+goog.require('ol.View2D');
+goog.require('ol.layer.Tile');
+goog.require('ol.source.BingMaps');
+goog.require('ol.source.OSM');
+
+var osm = new ol.layer.Tile({
+  source: new ol.source.OSM()
+});
+var bing = new ol.layer.Tile({
+  source: new ol.source.BingMaps({
+    key: 'Ak-dzM4wZjSqTlzveKz5u0d4IQ4bRzVI309GxmkgSVr1ewS6iPSrOvOKhA-CJlm3',
+    style: 'Aerial'
+  })
+});
+
+var map = new ol.Map({
+  layers: [osm, bing],
+  renderer: ol.RendererHint.CANVAS,
+  target: 'map',
+  view: new ol.View2D({
+    center: [0, 0],
+    zoom: 2
+  })
+});
+
+var swipe = document.getElementById('swipe');
+
+bing.on('precompose', function(event) {
+  var ctx = event.getContext();
+  var width = ctx.canvas.width * (swipe.value / 100);
+
+  ctx.save();
+  ctx.beginPath();
+  ctx.rect(width, 0, ctx.canvas.width - width, ctx.canvas.height);
+  ctx.clip();
+});
+
+bing.on('postcompose', function(event) {
+  var ctx = event.getContext();
+  ctx.restore();
+});
+
+swipe.addEventListener('change', function() {
+  map.requestRenderFrame();
+}, false);