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Z Index Swap.html
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Z Index Swap.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Z Index Swap - Bing Maps Samples</title>
<meta charset="utf-8" />
<link rel="shortcut icon" href="/favicon.ico"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<meta name="description" content="When you click on a shape in a layer, it swaps the zIndex of the layers such that the layer the shape is in, is on top." />
<meta name="keywords" content="Microsoft maps, map, gis, API, SDK, Bing, Bing Maps" />
<meta name="author" content="Microsoft Bing Maps" />
<meta name="screenshot" content="screenshot.jpg" />
<script>
var map,
baseZIndex= 10000,
topZIndex = 10001;
function GetMap() {
map = new Microsoft.Maps.Map('#myMap', {});
//Create two layers. Add click events to the layers such that when a shape is clicked in the layer, it triggers the handler to change its zIndex.
var layer1 = new Microsoft.Maps.Layer();
layer1.setZIndex(baseZIndex);
Microsoft.Maps.Events.addHandler(layer1, 'click', bringLayerToTop);
map.layers.insert(layer1);
var layer2 = new Microsoft.Maps.Layer();
layer2.setZIndex(baseZIndex);
Microsoft.Maps.Events.addHandler(layer2, 'click', bringLayerToTop);
map.layers.insert(layer2);
//Create two polygons and add one to each layer.
var polygons = Microsoft.Maps.TestDataGenerator.getPolygons(2, map.getBounds(), 5, 0.5);
layer1.add(polygons[0]);
layer2.add(polygons[1]);
}
function bringLayerToTop(e) {
//Check to see if the layer is already on top.
if(e.layer.getZIndex() === baseZIndex){
//Set the zIndex of all other layers to base zIndex.
for (var i = 0, len = map.layers.length; i < len; i++) {
if(map.layers[i] instanceof Microsoft.Maps.Layer){
map.layers[i].setZIndex(baseZIndex);
}
}
//Set he zIndex of the layer the clicked shape is in.
e.layer.setZIndex(topZIndex);
}
}
</script>
</head>
<body>
<div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;background-color:gray"></div>
<div style="width:600px;">
This code sample, uses two layers. When you click on a shape in a layer, it swaps the zIndex of the layers such that the layer the shape is in, is on top. Additional information zIndexing in Bing Maps V8 can be found <a href="https://msdn.microsoft.com/en-US/library/mt791033.aspx">here</a>.
</div>
<script>
// Dynamic load the Bing Maps Key and Script
// Get your own Bing Maps key at https://www.microsoft.com/maps
(async () => {
let script = document.createElement("script");
let bingKey = await fetch("https://samples.azuremaps.com/api/GetBingMapsKey").then(r => r.text()).then(key => { return key });
script.setAttribute("src", `https://www.bing.com/api/maps/mapcontrol?callback=GetMap&key=${bingKey}`);
document.body.appendChild(script);
})();
</script>
</body>
</html>