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HTML

              
                <html>
  <head>
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="initial-scale=1,maximum-scale=1,user-scalable=no"
    />
    <!--
  ArcGIS API for JavaScript, https://js.arcgis.com
  For more information about the layers-custom-tilelayer sample, read the original sample description at developers.arcgis.com.
  https://developers.arcgis.com/javascript/latest/sample-code/layers-custom-tilelayer/index.html
  -->
<title>Custom TileLayer - 4.13</title>

    <link
      rel="stylesheet"
      href="https://js.arcgis.com/4.13/esri/themes/light/main.css"
    />

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

    <script src="https://js.arcgis.com/4.13/"></script>

    <script>
      require([
        "esri/Map",
        "esri/request",
        "esri/Color",
        "esri/views/SceneView",
        "esri/widgets/LayerList",
        "esri/layers/BaseDynamicLayer",
        "esri/layers/BaseTileLayer"
      ], function(
        Map,
        esriRequest,
        Color,
        SceneView,
        LayerList,
        BaseDynamicLayer,
        BaseTileLayer
      ) {
        // *******************************************************
        // Custom tile layer class code
        // Create a subclass of BaseTileLayer
        // *******************************************************

        var TintLayer = BaseTileLayer.createSubclass({
          properties: {
            urlTemplate: null,
            tint: {
              value: null,
              type: Color
            }
          },

          // generate the tile url for a given level, row and column
          getTileUrl: function(level, row, col) {
            return this.urlTemplate
              .replace("{z}", level)
              .replace("{x}", col)
              .replace("{y}", row);
          },

          // This method fetches tiles for the specified level and size.
          // Override this method to process the data returned from the server.
          fetchTile: function(level, row, col) {
            // call getTileUrl() method to construct the URL to tiles
            // for a given level, row and col provided by the LayerView
            var url = this.getTileUrl(level, row, col);

            // request for tiles based on the generated url
            return esriRequest(url, {
              responseType: "image"
            }).then(
              function(response) {
                // when esri request resolves successfully
                // get the image from the response
                var image = response.data;
                var width = this.tileInfo.size[0];
                var height = this.tileInfo.size[0];

                // create a canvas with 2D rendering context
                var canvas = document.createElement("canvas");
                var context = canvas.getContext("2d");
                canvas.width = width;
                canvas.height = height;

                // Apply the tint color provided by
                // by the application to the canvas
                if (this.tint) {
                  // Get a CSS color string in rgba form
                  // representing the tint Color instance.
                  context.fillStyle = this.tint.toCss();
                  context.fillRect(0, 0, width, height);

                  // Applies "difference" blending operation between canvas
                  // and steman tiles. Difference blending operation subtracts
                  // the bottom layer (canvas) from the top layer (tiles) or the
                  // other way round to always get a positive value.
                  context.globalCompositeOperation = "difference";
                }

                // Draw the blended image onto the canvas.
                context.drawImage(image, 0, 0, width, height);

                return canvas;
              }.bind(this)
            );
          }
        });

        // *******************************************************
        // Start of JavaScript application
        // *******************************************************
        // *******************************************************
        // Create a subclass of BaseDynamicLayer
        // *******************************************************
        var CustomWMSLayer = BaseDynamicLayer.createSubclass({
          properties: {
            mapUrl: null,
            mapParameters: null
          },

          // Override the getImageUrl() method to generate URL
          // to an image for a given extent, width, and height.
          getImageUrl: function(extent, width, height) {
            var urlVariables = this._prepareQuery(
              this.mapParameters,
              extent,
              width,
              height
            );
            var queryString = this._joinUrlVariables(urlVariables);
            return this.mapUrl + "?" + queryString;
          },

          // Prepare query parameters for the URL to an image to be generated
          _prepareQuery: function(queryParameters, extent, width, height) {
            var wkid = extent.spatialReference.isWebMercator
              ? 3857
              : extent.spatialReference.wkid;
            var replacers = {
              width: width,
              height: height,
              wkid: wkid,
              xmin: extent.xmin,
              xmax: extent.xmax,
              ymin: extent.ymin,
              ymax: extent.ymax
            };

            var urlVariables = this._replace({}, queryParameters, replacers);
            return urlVariables;
          },

          // replace the url variables with the application provided values
          _replace: function(urlVariables, queryParameters, replacers) {
            Object.keys(queryParameters).forEach(function(key) {
              urlVariables[key] = Object.keys(replacers).reduce(function(
                previous,
                replacerKey
              ) {
                return previous.replace(
                  "{" + replacerKey + "}",
                  replacers[replacerKey]
                );
              },
              queryParameters[key]);
            });

            return urlVariables;
          },

          // join the url parameters
          _joinUrlVariables: function(urlVariables) {
            return Object.keys(urlVariables).reduce(function(previous, key) {
              return (
                previous + (previous ? "&" : "") + key + "=" + urlVariables[key]
              );
            }, "");
          }
        });
        // *******************************************************
        // end of custom dynamic layer
        // *******************************************************

        var wmsLayer = new CustomWMSLayer({
          mapUrl: "https://geobretagne.fr/geoserver/cadastre/ows",
          mapParameters: {
            SERVICE: "WMS",
            REQUEST: "GetMap",
            FORMAT: "image/png",
            TRANSPARENT: "TRUE",
            STYLES: "",
            VERSION: "1.3.0",
            LAYERS: "CP.CadastralParcel",
            WIDTH: "{width}",
            HEIGHT: "{height}",
            CRS: "EPSG:{wkid}",
            BBOX: "{xmin},{ymin},{xmax},{ymax}"
          }
        });
        // Create a new instance of the TintLayer and set its properties
        var stamenTileLayer = new TintLayer({
          urlTemplate:
            "https://stamen-tiles.a.ssl.fastly.net/toner/{z}/{x}/{y}.png",
          tint: new Color("#004FBB"),
          title: "Stamen Toner"
        });

        // add the new instance of the custom tile layer the map
        var map = new Map({
          layers: [stamenTileLayer, wmsLayer]
        });

        // create a new scene view and add the map
        var view = new SceneView({
          container: "viewDiv",
          map: map,
          center: [-4.489643,48.3871035],
          zoom: 17
        });
      });
    </script>
  </head>

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