override and reset a Renderer of a FeatureLayer using esri - Java Geographic Information System

Description

override and reset a Renderer of a FeatureLayer using esri

Demo Code

  /*/*from  www  .  j a v  a  2 s  .c  o m*/
   * Copyright 2015 Esri.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */

  package com.esri.sampleviewer.samples.featurelayers;

  import com.esri.arcgisruntime.datasource.arcgis.ServiceFeatureTable;
  import com.esri.arcgisruntime.geometry.Envelope;
  import com.esri.arcgisruntime.geometry.Point;
  import com.esri.arcgisruntime.geometry.SpatialReference;
  import com.esri.arcgisruntime.geometry.SpatialReferences;
  import com.esri.arcgisruntime.layers.FeatureLayer;
  import com.esri.arcgisruntime.mapping.Basemap;
  import com.esri.arcgisruntime.mapping.Map;
  import com.esri.arcgisruntime.mapping.view.MapView;
  import com.esri.arcgisruntime.mapping.view.Viewpoint;
  import com.esri.arcgisruntime.symbology.RgbColor;
  import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
  import com.esri.arcgisruntime.symbology.SimpleRenderer;

  import javafx.application.Application;
  import javafx.application.Platform;
  import javafx.geometry.Insets;
  import javafx.geometry.Pos;
  import javafx.scene.Scene;
  import javafx.scene.control.Button;
  import javafx.scene.control.Label;
  import javafx.scene.control.TextArea;
  import javafx.scene.layout.StackPane;
  import javafx.scene.layout.VBox;
  import javafx.stage.Stage;

  /**
   * This sample demonstrates how to override and reset a Renderer of a
   * FeatureLayer.
   * <h4>How it Works</h4>
   * 
   * First a {@link FeatureLayer} is created from a {@link ServiceFeatureTable}.
   * Next a {@link SimpleRenderer} can be created using a SimpleLineSymbol which
   * is set to the FeatureLayer using the {@link FeatureLayer#setRenderer} method.
   * To reset a FeatureLayer's Renderer back to the original Renderer, use the
   * {@link FeatureLayer#resetRenderer} method.
   */
  public class ChangeFeatureLayerRenderer extends Application {

      private MapView mapView;
      private FeatureLayer featureLayer;

      private final static String FEATURE_SERVICE_URL = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/PoolPermits/FeatureServer/0";

      @Override
public void start(Stage stage) throws Exception {

  // create stack pane and application scene
  StackPane stackPane = new StackPane();
  Scene scene = new Scene(stackPane);
  scene.getStylesheets().add(getClass()
      .getResource("../resources/SamplesTheme.css").toExternalForm());

  // set title, size, and add scene to stage
  stage.setTitle("Change Feature Layer Renderer Sample");
  stage.setWidth(800);
  stage.setHeight(700);
  stage.setScene(scene);
  stage.show();

  // create a control panel
  VBox vBoxControl = new VBox(6);
  vBoxControl.setMaxSize(250, 200);
  vBoxControl.getStyleClass().add("panel-region");

  // create sample description
  Label descriptionLabel = new Label("Sample Description:");
  descriptionLabel.getStyleClass().add("panel-label");
  TextArea description = new TextArea(
      "This sample shows how to change a Renderer of a Feature Layer and "
          + "reset it back.");
  description.setWrapText(true);
  description.autosize();
  description.setEditable(false);

  // create change and reset renderer buttons
  Button changeButton = new Button("Change Render");
  Button resetButton = new Button("Reset Renderer");
  changeButton.setMaxWidth(Double.MAX_VALUE);
  resetButton.setMaxWidth(Double.MAX_VALUE);
  changeButton.setDisable(true);
  resetButton.setDisable(true);

  changeButton.setOnAction(e -> {
    // create a blue line symbol renderer
    SimpleLineSymbol lineSymbol = new SimpleLineSymbol(
        SimpleLineSymbol.Style.SOLID, new RgbColor(0, 0, 255, 255), 2, 1);
    SimpleRenderer simpleRenderer = new SimpleRenderer(lineSymbol);

    featureLayer.setRenderer(simpleRenderer);
  });

  resetButton.setOnAction(e -> featureLayer.resetRenderer());

  // add label, sample description, and buttons to the control panel
  vBoxControl.getChildren().addAll(descriptionLabel, description,
      changeButton, resetButton);
  try {

    // create starting envelope for the map
    SpatialReference spatialReference = SpatialReferences.getWebMercator();
    Point topLeftPoint =
        new Point(-1.30758164047166E7, 4014771.46954516, spatialReference);
    Point bottomRightPoint =
        new Point(-1.30730056797177E7, 4016869.78617381, spatialReference);
    Envelope envelope = new Envelope(topLeftPoint, bottomRightPoint);

    // create a service feature table using the url
    final ServiceFeatureTable featureTable =
        new ServiceFeatureTable(FEATURE_SERVICE_URL);

    // create a feature layer from the service feature table
    featureLayer = new FeatureLayer(featureTable);

    // enable buttons when feature layer is done loading
    featureLayer.addDoneLoadingListener(() -> {
      changeButton.setDisable(false);
      resetButton.setDisable(false);
    });

    // create a map with basemap topographic
    final Map map = new Map(Basemap.createTopographic());

    // set starting envelope for the map
    map.setInitialViewpoint(new Viewpoint(envelope));

    // add feature layer to map
    map.getOperationalLayers().add(featureLayer);

    // create a view for this map and set map to it
    mapView = new MapView();
    mapView.setMap(map);

    // add the map view and control panel to stack pane
    stackPane.getChildren().addAll(mapView, vBoxControl);
    StackPane.setAlignment(vBoxControl, Pos.TOP_LEFT);
    StackPane.setMargin(vBoxControl, new Insets(10, 0, 0, 10));

  } catch (Exception e) {
    // on any error, display the stack trace
    e.printStackTrace();
  }
}

      /**
       * Stops and releases all resources used in application.
       *
       * @throws Exception if security manager doesn't allow JVM to exit with
       *           current status
       */
      @Override
      public void stop() throws Exception {

          if (mapView != null) {
              mapView.dispose();
          }
          Platform.exit();
          System.exit(0);
      }

      /**
       * Opens and runs application.
       *
       * @param args arguments passed to this application
       */
      public static void main(String[] args) {

          Application.launch(args);
      }

  }

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