Samples/Pushpins/Scaled/Pushpin Scaled.html

﻿<!DOCTYPE html>
<html lang="en">
<head>
    <title>Scaled Pushpin - 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="This sample shows how to use a canvas to create a scaled pushpin." />
    <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>
    function GetMap() {
        var map = new Microsoft.Maps.Map('#myMap', {});

        createScaledPushpin(map.getCenter(), '/images/pushpins/blueSquare.png', 2, function (pin) {
            map.entities.push(pin);
        });
    }

    function createScaledPushpin(location, imgUrl, scale, callback) {
        var img = new Image();
        img.onload = function () {
            var c = document.createElement('canvas');
            c.width = img.width * scale;
            c.height = img.height * scale;

            var context = c.getContext('2d');

            //Draw scaled image
            context.drawImage(img, 0, 0, c.width, c.height);

            var pin = new Microsoft.Maps.Pushpin(location, {
                //Generate a base64 image URL from the canvas.
                icon: c.toDataURL(),

                //Anchor based on the bottom middle of the image.
                anchor: new Microsoft.Maps.Point(c.width/2, c.height)
            });

            if (callback) {
                callback(pin);
            }
        };

        img.src = imgUrl;
    }
    </script>
    
</head>
<body>
    <div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;background-color:gray"></div>

    <fieldset style="width:800px;margin-top:10px;">
        <legend>Scaled Pushpin Sample</legend>
        This sample shows how to use a canvas to create a scaled pushpin. 
        Requires the pushpin to be in the same domain, or its hosting server to have CORs enabled.
    </fieldset>

    <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>