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/*
* Copyright 2021 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.create_symbol_styles_from_web_styles;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.ExecutionException;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.ColumnConstraints;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.paint.Paint;
import javafx.stage.Stage;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.concurrent.ListenableFuture;
import com.esri.arcgisruntime.data.ServiceFeatureTable;
import com.esri.arcgisruntime.layers.FeatureLayer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.Symbol;
import com.esri.arcgisruntime.symbology.SymbolStyle;
import com.esri.arcgisruntime.symbology.UniqueValueRenderer;
public class CreateSymbolStylesFromWebStylesSample extends Application {
private MapView mapView;
private GridPane legendGridPane;
private SymbolStyle symbolStyle;
private VBox vBox;
@Override
public void start(Stage stage) {
try {
// create stack pane and application scene
StackPane stackPane = new StackPane();
Scene scene = new Scene(stackPane);
// set title, size, and add scene to stage
stage.setTitle("Create Symbol Styles From Web Styles 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 map with the light gray basemap style
ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_LIGHT_GRAY);
// set an initial reference scale on the map for controlling symbol size
map.setReferenceScale(100000);
// 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(34.28301, -118.44186, 7000));
// create a feature layer from a service
FeatureLayer featureLayer = new FeatureLayer(new ServiceFeatureTable(
"http://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/LA_County_Points_of_Interest/FeatureServer/0"));
// add the feature layer to the map's operational layers
map.getOperationalLayers().add(featureLayer);
// display an error if the feature layer fails to load
featureLayer.addDoneLoadingListener(() -> {
if (featureLayer.getLoadStatus() == LoadStatus.FAILED_TO_LOAD) {
new Alert(Alert.AlertType.ERROR, "Feature layer failed to load. Details: \n"
+ featureLayer.getLoadError().getCause().getMessage()).show();
}
});
// create a unique value renderer
UniqueValueRenderer uniqueValueRenderer = new UniqueValueRenderer();
// add the name of a field from the feature layer data that symbols will be mapped to
uniqueValueRenderer.getFieldNames().add("cat2");
// set the unique value renderer on the feature layer
featureLayer.setRenderer(uniqueValueRenderer);
// create a symbol style from a web style
// note: ArcGIS Online is used as the default portal when null is passed as the portal parameter
symbolStyle = new SymbolStyle("Esri2DPointSymbolsStyle", null);
// display an error if the symbol style fails to load
symbolStyle.addDoneLoadingListener(() -> {
if (symbolStyle.getLoadStatus() == LoadStatus.FAILED_TO_LOAD) {
new Alert(Alert.AlertType.ERROR, "Error: could not load symbol style. Details: \n"
+ symbolStyle.getLoadError().getMessage()).show();
}
});
// setup the UI for the legend
setupLegend();
// create a list of the required symbol names from the web style
ArrayList<String> symbolNames = new ArrayList<>(Arrays.asList("atm", "beach", "campground", "city-hall", "hospital",
"library", "park", "place-of-worship", "police-station", "post-office", "school", "trail"));
// create unique values for the renderer and construct a symbol for each feature
for (String symbolName : symbolNames) {
// search for each symbol in the symbol style
ListenableFuture<Symbol> searchResult = symbolStyle.getSymbolAsync(Collections.singletonList(symbolName));
searchResult.addDoneListener(() -> {
try {
// get the symbol from the search result
Symbol symbol = searchResult.get();
// get a list of all categories to be mapped to the symbol
List<String> categories = mapSymbolNameToField(symbolName);
for (String category : categories) {
// create a unique value for each category
UniqueValueRenderer.UniqueValue uniqueValue = new UniqueValueRenderer.UniqueValue(
"", symbolName, symbol, Collections.singletonList(category));
// add each unique value to the unique value renderer
uniqueValueRenderer.getUniqueValues().add(uniqueValue);
}
// create and add an image view and a label for the symbol to the legend on the UI
ImageView imageView = createImageView(symbol);
Label gridPaneLabel = new Label(symbolName);
legendGridPane.add(imageView, 0, symbolNames.indexOf(symbolName));
legendGridPane.add(gridPaneLabel, 1, symbolNames.indexOf(symbolName));
} catch (Exception e) {
// on any error, display the stack trace.
e.printStackTrace();
}
});
}
// add a map scale listener on the map view to control the symbol sizes at different scales
mapView.mapScaleProperty().addListener((observable, oldValue, newValue) -> {
featureLayer.setScaleSymbols((double) newValue >= 80000);
});
// add the map view and vbox to the stack pane
stackPane.getChildren().addAll(mapView, vBox);
StackPane.setAlignment(vBox, Pos.TOP_LEFT);
StackPane.setMargin(vBox, new Insets(10, 0, 0, 10));
} catch (Exception e) {
// on any error, display the stack trace.
e.printStackTrace();
}
}
/**
* Creates a legend on the UI for the symbol styles.
*/
private void setupLegend() {
// create a box to show the legend
vBox = new VBox();
vBox.setMaxSize(250, 300);
vBox.setBackground(new Background(new BackgroundFill(Paint.valueOf("rgba(255, 255, 255 , 0.7)"), CornerRadii.EMPTY,
Insets.EMPTY)));
vBox.setPadding(new Insets(10.0));
vBox.setAlignment(Pos.TOP_CENTER);
vBox.setSpacing(10);
// create a grid pane
legendGridPane = new GridPane();
legendGridPane.getColumnConstraints().add(new ColumnConstraints(50));
legendGridPane.setPadding(new Insets(10));
legendGridPane.setMaxWidth(175);
legendGridPane.setVgap(12);
// create a label to display the symbol style name as the title of the legend and add to the grid pane
Label legendHeader = new Label("Style: " + symbolStyle.getStyleName());
legendHeader.setStyle("-fx-font-size: 12; -fx-font-weight: bold;");
// create a scroll pane to contain the legend
ScrollPane scrollPane = new ScrollPane();
scrollPane.setContent(legendGridPane);
vBox.getChildren().addAll(legendHeader, scrollPane);
}
/**
* Returns a list of categories to be matched to a symbol name.
*
* @param symbolName the name of a symbol from a symbol style
* @return categories a list of categories matched to the provided symbol name
*/
private List<String> mapSymbolNameToField(String symbolName) {
List<String> categories = new ArrayList<>();
switch (symbolName) {
case "atm":
categories.add("Banking and Finance");
break;
case "beach":
categories.add("Beaches and Marinas");
break;
case "campground":
categories.add("Campgrounds");
break;
case "city-hall":
categories.addAll(Arrays.asList("City Halls", "Government Offices"));
break;
case "hospital":
categories.addAll(Arrays.asList("Hospitals and Medical Centers", "Health Screening and Testing", "Health Centers",
"Mental Health Centers"));
break;
case "library":
categories.add("Libraries");
break;
case "park":
categories.add("Parks and Gardens");
break;
case "place-of-worship":
categories.add("Churches");
break;
case "police-station":
categories.add("Sheriff and Police Stations");
break;
case "post-office":
categories.addAll(Arrays.asList("DHL Locations", "Federal Express Locations"));
break;
case "school":
categories.addAll(Arrays.asList("Public High Schools", "Public Elementary Schools", "Private and Charter Schools"));
break;
case "trail":
categories.add("Trails");
break;
}
return categories;
}
/**
* Returns an image view populated with a symbol.
*
* @param symbol the symbol to display in the image view
* @return imageView the image view populated with the symbol
*/
private ImageView createImageView(Symbol symbol) {
// create an image view for displaying the symbol in the legend
ImageView imageView = new ImageView();
ListenableFuture<Image> imageOfSymbol = symbol.createSwatchAsync(Color.TRANSPARENT, 1f);
imageOfSymbol.addDoneListener(() -> {
try {
// add the symbol image to the image view
imageView.setImage(imageOfSymbol.get());
} catch (InterruptedException | ExecutionException e) {
new Alert(Alert.AlertType.ERROR, "Error creating preview ImageView from provided symbol").show();
}
});
return imageView;
}
/**
* 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);
}
}