ArcGIS-JSAPI-Sample/overlay-sample.html at master · adamriyadi/ArcGIS-JSAPI-Sample · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=7, IE=9, IE=10">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>
    <title>Overlaying with PictureMarkerSymbol</title>
    <link rel="stylesheet" href="http://js.arcgis.com/3.6/js/esri/css/esri.css">
    <style>
      html, body, #map {
        height: 100%;
        width: 100%;
        margin: 0;
        padding: 0;
      }
      body {
        background-color: #FFF;
        overflow: hidden;
        font-family: "Trebuchet MS";
      }
    </style>
    <script src="http://js.arcgis.com/3.6/"></script>
    <script>
		var map, transparentSymbol, pictureSymbol, pictureOverlayLayer, picturePoint, pictureGraphic, extentGraphicLayer, extentOverlay,
		extentGraphic, dojoShape, moveable, moveStopToken, firstInit, initial_width, initial_height, picture_width, picture_height;

		require([
			"dojo/_base/connect",
			"dojo/_base/Color",
			"dojox/gfx/Moveable",
			"esri/symbols/SimpleFillSymbol",
			"esri/symbols/SimpleLineSymbol",
			"esri/symbols/PictureMarkerSymbol",
			"esri/layers/GraphicsLayer",
			"esri/graphic",
			"esri/geometry/Extent",
			"esri/geometry/Point",
			"esri/map",
			"dojo/domReady!"], function(
				connect,
				Color,
				Moveable,
				SimpleFillSymbol,
				SimpleLineSymbol,
				PictureMarkerSymbol,
				GraphicsLayer,
				Graphic,
				Extent,
				Point,
				Map) {

			firstInit = true;

			map = new Map("map", {
				basemap: "topo",
				center: [-122.45,37.75], // long, lat
				zoom: 13,
				sliderStyle: "small"
			});

			map.on("load", mapLoad);
			map.on("update-end", updateEnd);
			map.on("extent-change", extentChange);

			transparentSymbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID,
						new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color([0,0,0,0]), 1),
						new Color([255,255,255,0])
					);

			picture_width = 685;
			picture_height = 332;
			pictureSymbol = new PictureMarkerSymbol("image/overlay.png", picture_width, picture_height);

			extentGraphicLayer = new GraphicsLayer();
			pictureOverlayLayer = new GraphicsLayer();

			extentOverlay = new Extent({
				"xmin"	: -122.502099227903,
				"ymin"	: 37.736357791231,
				"xmax"	: -122.384854507444,
				"ymax"	: 37.7813471858105,
				"spatialReference" : {"wkid":4326}
				});
			extentGraphic = new Graphic(extentOverlay, transparentSymbol);
			extentGraphicLayer.add(extentGraphic);

			map.addLayers([extentGraphicLayer, pictureOverlayLayer]);

			function extentChange() {
				if (typeof pictureGraphic !== 'undefined')
				{

					var screenPoint1 = map.toScreen(new Point(extentOverlay.xmin, extentOverlay.ymin));
					var screenPoint2 = map.toScreen(new Point(extentOverlay.xmax, extentOverlay.ymax));

					width = Math.abs((screenPoint2.x - screenPoint1.x));
					height = Math.abs((screenPoint1.y - screenPoint2.y));

					new_width = width / (initial_width / picture_width);
					new_height = height / (initial_height / picture_height);

					pictureSymbol.setWidth(new_width);
					pictureSymbol.setHeight(new_height);

					if (pictureGraphic.getDojoShape() != null)
					{
						connect.disconnect(moveStopToken);

						dojoShape = pictureGraphic.getDojoShape();
						moveable = new Moveable(dojoShape);

						moveStopToken = connect.connect(moveable, "onMoveStop", moveStop);
					}
				}
			}

			function updateEnd() {
				if (firstInit && typeof pictureGraphic !== 'undefined')
				{
					if (pictureGraphic.getDojoShape() != null)
					{
						var screenPoint1 = map.toScreen(new Point(extentOverlay.xmin, extentOverlay.ymin));
						var screenPoint2 = map.toScreen(new Point(extentOverlay.xmax, extentOverlay.ymax));

						initial_width = Math.abs((screenPoint2.x - screenPoint1.x));
						initial_height = Math.abs((screenPoint1.y - screenPoint2.y));

						dojoShape = pictureGraphic.getDojoShape();
						moveable = new Moveable(dojoShape);

						moveStopToken = connect.connect(moveable, "onMoveStop", moveStop);

						firstInit = false;
					}
				}
			}

			function mapLoad(map) {
				picturePoint = extentOverlay.getCenter();
				pictureGraphic = new Graphic(picturePoint, pictureSymbol);

				pictureOverlayLayer.add(pictureGraphic);
				pictureOverlayLayer.setOpacity(0.6);
			}

			function moveStop(mover) {
				var tx = dojoShape.getTransform();

				var startPoint = pictureGraphic.geometry;
				var endPoint = map.toMap(map.toScreen(startPoint).offset(tx.dx, tx.dy));
				dojoShape.setTransform(null);

				pictureGraphic.setGeometry(endPoint);
			}

		});
    </script>
  </head>

  <body>
    <div id="map"></div>
  </body>
</html>