Simple fill symbol

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Sample viewer app

Change a graphic's fill color, outline color, and fill style properties.

Image of simple fill symbol

Use case

Customize the appearance of a graphic with a color and style scheme suitable for the data. For example, a polygon with a brown 'forward-diagonal' fill style could represent an area of artificial ground mapped on a geological map.

How to use the sample

Use the drop down menus in the control panel to change the fill color, outline color and fill style of the polygon.

How it works

  1. Create a Polygon using a PointCollection to define its boundaries.
  2. Create a SimpleLineSymbol(SimpleLineSymbol.Style, color, width).
  3. Create a SimpleFillSymbol(SimpleFillSymbol.Style, color, outline).
  4. Set the color, outline and style of the simple fill symbol object with:

    • setColor();
    • setOutline(simpleLineSymbol);
    • setStyle();
  5. Create a new Graphic object, passing in the polygon and simple fill symbol as parameters, and add the graphic to the graphics overlay with graphicsOverlay.getGraphics().add(new Graphic(polygon, fillSymbol)).

Relevant API

  • Graphic
  • GraphicsOverlay
  • PointCollection
  • Polygon
  • SimpleFillSymbol
  • SimpleLineSymbol

Tags

fill, line, graphic, symbol

Sample Code

SimpleFillSymbolSample.java
                                                                                                                                                                                                                            
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/*
 * Copyright 2017 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.samples.simple_fill_symbol;

import java.util.ArrayList;
import java.util.List;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Paint;
import javafx.stage.Stage;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.PointCollection;
import com.esri.arcgisruntime.geometry.Polygon;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.SimpleFillSymbol;
import com.esri.arcgisruntime.symbology.SimpleFillSymbol.Style;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;

public class SimpleFillSymbolSample extends Application {

  private VBox controlsVBox;
  private MapView mapView;
  private SimpleFillSymbol fillSymbol;
  private List<SimpleLineSymbol> lineSymbols;

  @Override
  public void start(Stage stage) {

    try {
      // create stack pane and application scene
      StackPane stackPane = new StackPane();
      Scene scene = new Scene(stackPane);
      scene.getStylesheets().add(getClass().getResource("/simple_fill_symbol/style.css").toExternalForm());

      // set title, size, and add scene to stage
      stage.setTitle("Simple Fill Symbol Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(scene);
      stage.show();

      // authentication with an API key or named user is required to access basemaps and other location services
      String yourAPIKey = System.getProperty("apiKey");
      ArcGISRuntimeEnvironment.setApiKey(yourAPIKey);

      // create a control panel
      controlsVBox = new VBox(6);
      controlsVBox.setBackground(new Background(new BackgroundFill(Paint.valueOf("rgba(0,0,0,0.3)"), CornerRadii.EMPTY,
          Insets.EMPTY)));
      controlsVBox.setPadding(new Insets(10.0));
      controlsVBox.setMaxSize(180, 200);
      controlsVBox.getStyleClass().add("panel-region");

      createSymbolFunctionality();

      // create a map with the topographic basemap style
      final ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);

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

      // set a viewpoint on the map view
      mapView.setViewpoint(new Viewpoint(43.03922, -108.55818, 10000000));

      // creates a square from four points
      PointCollection points = new PointCollection(SpatialReferences.getWebMercator());
      points.add(-1.1579397849033352E7, 5618494.623878779);
      points.add(-1.158486021463032E7, 5020365.591010623);
      points.add(-1.236324731219847E7, 5009440.859816683);
      points.add(-1.2360516129399985E7, 5621225.806677263);
      Polygon square = new Polygon(points);

      // transparent red (0x88FF0000) color symbol
      fillSymbol = new SimpleFillSymbol(Style.SOLID, 0x88FF0000, null);

      // renders graphics to the GeoView
      GraphicsOverlay graphicsOverlay = new GraphicsOverlay();
      mapView.getGraphicsOverlays().add(graphicsOverlay);
      graphicsOverlay.getGraphics().add(new Graphic(square, fillSymbol));

      createLineSymbols();

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

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

  /**
   * Creates a list of three SimpleLineSymbols, (blue, red, green).
   */
  private void createLineSymbols() {

    lineSymbols = new ArrayList<>();

    // solid blue (0xFF0000FF) simple line symbol
    SimpleLineSymbol blueLineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFF0000FF, 3);
    lineSymbols.add(blueLineSymbol);

    // solid green (0xFF00FF00) simple line symbol
    SimpleLineSymbol greenLineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFF00FF00, 3);
    lineSymbols.add(greenLineSymbol);

    // solid red (0xFFFF0000) simple line symbol
    SimpleLineSymbol redLineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFFFF0000, 3);
    lineSymbols.add(redLineSymbol);
  }

  /**
   * Creates the UI control pane for setting the SimpleFillSymbol properties:
   * color, outline and style.
   */
  private void createSymbolFunctionality() {

    // select a color for the fill symbol
    Label colorLabel = new Label("Change Fill Color");
    colorLabel.getStyleClass().add("panel-label");
    ComboBox<String> colorBox = new ComboBox<>();
    colorBox.getItems().addAll("Blue", "Green", "Red");
    colorBox.setMaxWidth(Double.MAX_VALUE);

    colorBox.getSelectionModel().selectedItemProperty().addListener((obs, oldValue, newValue) -> {
      final int color;

      switch (newValue) {
        case "Blue":
          color = 0x880000FF;
          break;
        case "Green":
          color = 0x8800FF00;
          break;
        default:
          color = 0xFFFF0000; // red
          break;
      }
      fillSymbol.setColor(color);
    });

    // select the outline color
    Label lineLabel = new Label("Change Outline Color");
    lineLabel.getStyleClass().add("panel-label");
    ComboBox<String> lineBox = new ComboBox<>();
    lineBox.getItems().addAll("Blue", "Green", "Red");
    lineBox.setMaxWidth(Double.MAX_VALUE);

    lineBox.getSelectionModel().selectedItemProperty().addListener((obs, oldValue, newValue) -> fillSymbol.setOutline(lineSymbols.get(lineBox.getSelectionModel().getSelectedIndex())));

    // select a style for the fill symbol
    Label stlyeLabel = new Label("Change Fill Style");
    stlyeLabel.getStyleClass().add("panel-label");
    ComboBox<Style> styleBox = new ComboBox<>();
    styleBox.getItems().addAll(Style.BACKWARD_DIAGONAL, Style.FORWARD_DIAGONAL, Style.DIAGONAL_CROSS, Style.HORIZONTAL,
        Style.VERTICAL, Style.CROSS, Style.SOLID, Style.NULL);
    styleBox.setMaxWidth(Double.MAX_VALUE);

    styleBox.getSelectionModel().selectedItemProperty().addListener((obs, oldValue, newValue) -> fillSymbol.setStyle(newValue));

    // add functionality to the control pane
    controlsVBox.getChildren().addAll(colorLabel, colorBox, lineLabel, lineBox, stlyeLabel, styleBox);
  }

  /**
   * Stops and releases all resources used in application.
   */
  @Override
  public void stop() {

    if (mapView != null) {
      mapView.dispose();
    }
  }

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

    Application.launch(args);
  }

}

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