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how to add mouse hover event to a polygon in javascript

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04-13-2017 02:18 AM
purnimamishra
by
New Contributor
‎04-13-2017 02:18 AM
hii,
thank u so much for replying me. now i can add polygon . but can not add any event to it.
kindly help me to add a mouse hover event to a particular polygon.
when i hover on a polygon its fill color should be changed. and show a popup.. i am copy-paste my code here.. u can check it and kindly help me..
my code....
 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
  <meta name="description" content="[Get started with graphics - 4.3]">
  <!--
  ArcGIS API for JavaScript, https://js.arcgis.com
  For more information about the get-started-graphics sample, read the original sample description at developers.arcgis.com.
  -->
<title>Get started with graphics - 4.3</title>
 
  <link rel="stylesheet" href="https://js.arcgis.com/4.3/esri/css/main.css">
  <script src="https://js.arcgis.com/4.3/"></script>
 
  <style>
    html,
    body,
    #viewDiv {
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
    }
  </style>
 
  <script>
    require([
      "esri/Map",
      "esri/views/MapView",
      "esri/Graphic",
      "esri/geometry/Point",
      "esri/geometry/Polyline",
      "esri/geometry/Polygon",
      "esri/symbols/SimpleMarkerSymbol",
      "esri/symbols/SimpleLineSymbol",
      "esri/symbols/SimpleFillSymbol",
      "dojo/domReady!"
    ], function(
      Map, MapView,
      Graphic, Point, Polyline, Polygon,
      SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol
    ) {
 
      var map = new Map({
        basemap: "hybrid"
      });
 
      var view = new MapView({
        center: [-80, 35],
        container: "viewDiv",
        map: map,
        zoom: 3
      });
 
 
      /************************
       * Create a polygon graphic
       ************************/
 
      // Create a polygon geometry
      var polygon = new Polygon({
        rings: [
          [-64.78, 32.3],
          [-66.07, 18.45],
          [-80.21, 25.78],[-92.21, 35.78],[-85.21, 32.78],
          [-64.78, 32.3]
        ]
      });
 
      // Create a symbol for rendering the graphic
      var fillSymbol = new SimpleFillSymbol({
        color: [227, 139, 79, 0.8],
        outline: { // autocasts as new SimpleLineSymbol()
          color: [255, 255, 255],
          width: 1
        }
      });
 
      // Add the geometry and symbol to a new graphic
      var polygonGraphic = new Graphic({
        geometry: polygon,
        symbol: fillSymbol
      });
 
      // Add the graphics to the view's graphics layer
      view.graphics.addMany([polygonGraphic]);
    });
  </script>
</head>
 
<body>
  <div id="viewDiv"></div>
</body>
 
</html>
thank u
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1 Solution

Accepted Solutions
RobertScheitlin__GISP
by MVP Emeritus
MVP Emeritus
‎04-13-2017 06:35 AM

Prunima,

   Here is your code updated for that:

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
  <meta name="description" content="[Get started with graphics - 4.3]">
  <!--
  ArcGIS API for JavaScript, https://js.arcgis.com
  For more information about the get-started-graphics sample, read the original sample description at developers.arcgis.com.
  https://developers.arcgis.com/javascript/latest/get-started-graphics/index.html
  -->
  <title>Get started with graphics - 4.3</title>

  <link rel="stylesheet" href="https://js.arcgis.com/4.3/esri/css/main.css">
  <script src="https://js.arcgis.com/4.3/"></script>

  <style>
    html,
    body,
    #viewDiv {
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
    }
  </style>

  <script>
    var highfillSymbol, fillSymbol;
    require([
      "esri/core/watchUtils",
      "esri/Map",
      "esri/views/MapView",
      "esri/Graphic",
      "esri/layers/GraphicsLayer",
      "esri/geometry/Point",
      "esri/geometry/Polyline",
      "esri/geometry/Polygon",
      "esri/symbols/SimpleMarkerSymbol",
      "esri/symbols/SimpleLineSymbol",
      "esri/symbols/SimpleFillSymbol",
      "dojo/_base/array",
      "dojo/domReady!"
    ], function(
      watchUtils, Map, MapView,
      Graphic, GraphicsLayer, Point, Polyline, Polygon,
      SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol,
      array
    ) {
      var layer = new GraphicsLayer({title: "myPolyGL"});

      var map = new Map({
        basemap: "hybrid",
        layers: [layer]
      });

      var view = new MapView({
        center: [-80, 35],
        container: "viewDiv",
        map: map,
        zoom: 3
      });

      /************************
       * Create a polygon graphic
       ************************/

      // Create a polygon geometry
      var polygon = new Polygon({
        rings: [
          [-64.78, 32.3],
          [-66.07, 18.45],
          [-80.21, 25.78],
          [-92.21, 35.78],
          [-85.21, 32.78],
          [-64.78, 32.3]
        ]
      });

      // Create a symbol for rendering the graphic
      fillSymbol = new SimpleFillSymbol({
        color: [227, 139, 79, 0.8],
        outline: { // autocasts as new SimpleLineSymbol()
          color: [255, 255, 255],
          width: 1
        }
      });

      // Create a highlight symbol for rendering the graphic
      highfillSymbol = new SimpleFillSymbol({
        color: [255, 139, 0, 0.8],
        outline: { // autocasts as new SimpleLineSymbol()
          color: [255, 255, 255],
          width: 1
        }
      });

      // Add the geometry and symbol to a new graphic
      var polygonGraphic = new Graphic({
        geometry: polygon,
        symbol: fillSymbol
      });

      // Add the graphics to the view's graphics layer
      layer.graphics.addMany([polygonGraphic]);

      function getGraphics(response) {
        //loop through all the layers.graphics and remove any with the highfillsymbol
        array.map(layer.graphics.items, function(gra){
          if(gra.symbol === highfillSymbol){
            layer.graphics.remove(gra);
          }
        });
        // the topmost graphic from the click location
        // from the graphic to the user
        if(response.results[0] && response.results[0].graphic){
          var graphic = response.results[0].graphic.clone();
          graphic.symbol = highfillSymbol;
          layer.graphics.add(graphic);
          view.popup.open({
            title: "Your Popup",
            location: response.results[0].mapPoint
          });
        }else{
          view.popup.close();
        }
      }

      view.then(function() {
        view.whenLayerView(layer).then(function(lview) {
          watchUtils.whenFalseOnce(lview, "updating", function(){
            // Set up a click event handler and retrieve the screen x, y coordinates
            view.on("pointer-move", function(evt) {
                var screenPoint = {
                  x: evt.x,
                  y: evt.y
                };

                // the hitTest() checks to see if any graphics in the view
                // intersect the given screen x, y coordinates
                view.hitTest(screenPoint)
                  .then( function(response){
                    getGraphics(response);
                  });
            });
          });
        });
      });
    });
  </script>
</head>

<body>
  <div id="viewDiv"></div>
</body>

</html>
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View solution in original post

6 Replies
RobertScheitlin__GISP
by MVP Emeritus
MVP Emeritus
‎04-13-2017 06:35 AM

Prunima,

   Here is your code updated for that:

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
  <meta name="description" content="[Get started with graphics - 4.3]">
  <!--
  ArcGIS API for JavaScript, https://js.arcgis.com
  For more information about the get-started-graphics sample, read the original sample description at developers.arcgis.com.
  https://developers.arcgis.com/javascript/latest/get-started-graphics/index.html
  -->
  <title>Get started with graphics - 4.3</title>

  <link rel="stylesheet" href="https://js.arcgis.com/4.3/esri/css/main.css">
  <script src="https://js.arcgis.com/4.3/"></script>

  <style>
    html,
    body,
    #viewDiv {
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
    }
  </style>

  <script>
    var highfillSymbol, fillSymbol;
    require([
      "esri/core/watchUtils",
      "esri/Map",
      "esri/views/MapView",
      "esri/Graphic",
      "esri/layers/GraphicsLayer",
      "esri/geometry/Point",
      "esri/geometry/Polyline",
      "esri/geometry/Polygon",
      "esri/symbols/SimpleMarkerSymbol",
      "esri/symbols/SimpleLineSymbol",
      "esri/symbols/SimpleFillSymbol",
      "dojo/_base/array",
      "dojo/domReady!"
    ], function(
      watchUtils, Map, MapView,
      Graphic, GraphicsLayer, Point, Polyline, Polygon,
      SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol,
      array
    ) {
      var layer = new GraphicsLayer({title: "myPolyGL"});

      var map = new Map({
        basemap: "hybrid",
        layers: [layer]
      });

      var view = new MapView({
        center: [-80, 35],
        container: "viewDiv",
        map: map,
        zoom: 3
      });

      /************************
       * Create a polygon graphic
       ************************/

      // Create a polygon geometry
      var polygon = new Polygon({
        rings: [
          [-64.78, 32.3],
          [-66.07, 18.45],
          [-80.21, 25.78],
          [-92.21, 35.78],
          [-85.21, 32.78],
          [-64.78, 32.3]
        ]
      });

      // Create a symbol for rendering the graphic
      fillSymbol = new SimpleFillSymbol({
        color: [227, 139, 79, 0.8],
        outline: { // autocasts as new SimpleLineSymbol()
          color: [255, 255, 255],
          width: 1
        }
      });

      // Create a highlight symbol for rendering the graphic
      highfillSymbol = new SimpleFillSymbol({
        color: [255, 139, 0, 0.8],
        outline: { // autocasts as new SimpleLineSymbol()
          color: [255, 255, 255],
          width: 1
        }
      });

      // Add the geometry and symbol to a new graphic
      var polygonGraphic = new Graphic({
        geometry: polygon,
        symbol: fillSymbol
      });

      // Add the graphics to the view's graphics layer
      layer.graphics.addMany([polygonGraphic]);

      function getGraphics(response) {
        //loop through all the layers.graphics and remove any with the highfillsymbol
        array.map(layer.graphics.items, function(gra){
          if(gra.symbol === highfillSymbol){
            layer.graphics.remove(gra);
          }
        });
        // the topmost graphic from the click location
        // from the graphic to the user
        if(response.results[0] && response.results[0].graphic){
          var graphic = response.results[0].graphic.clone();
          graphic.symbol = highfillSymbol;
          layer.graphics.add(graphic);
          view.popup.open({
            title: "Your Popup",
            location: response.results[0].mapPoint
          });
        }else{
          view.popup.close();
        }
      }

      view.then(function() {
        view.whenLayerView(layer).then(function(lview) {
          watchUtils.whenFalseOnce(lview, "updating", function(){
            // Set up a click event handler and retrieve the screen x, y coordinates
            view.on("pointer-move", function(evt) {
                var screenPoint = {
                  x: evt.x,
                  y: evt.y
                };

                // the hitTest() checks to see if any graphics in the view
                // intersect the given screen x, y coordinates
                view.hitTest(screenPoint)
                  .then( function(response){
                    getGraphics(response);
                  });
            });
          });
        });
      });
    });
  </script>
</head>

<body>
  <div id="viewDiv"></div>
</body>

</html>
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purnimamishra
by
New Contributor
‎04-14-2017 11:04 PM

thank you so much...

if i need any more help can i ask u???

thank u

Purnima

On Thu, Apr 13, 2017 at 7:06 PM, Robert Scheitlin, GISP <geonet@esri.com>

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purnimamishra
by
New Contributor
‎04-14-2017 11:11 PM

thank u for answering my question

thanks a ton

Purnima

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RobertScheitlin__GISP
by MVP Emeritus
MVP Emeritus
‎04-18-2017 05:36 AM

Prunima,

 

  Don't forget to mark this question as answered by clicking on the "Correct Answer" link on the reply that answered your question. If you have other questions then start a new question/thread since this question has been answered already.

0 Kudos
AshokP
by
New Contributor
‎08-29-2020 09:04 PM

Where should i paste this code. we have already arcgis portal running, in that we need one maplayer need  mousehover action. Shall paste the whole code in main config. Or shall i create a widget? I am confused .Please suggest

0 Kudos
RobertScheitlin__GISP
by MVP Emeritus
MVP Emeritus
‎08-30-2020 11:29 AM

Ashok,

   This is the JS API space and it sounds like you are asking about Web App Builder or Experience Builder... Is that the case?

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