Java-Buddy

Scene.snapshot() takes a snapshot of scene and returns the rendered image when it is ready.

Example:

package javafxsnapshot;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.embed.swing.SwingFXUtils;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.image.WritableImage;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javax.imageio.ImageIO;
/**
 *
 * @web http://java-buddy.blogspot.com
 */
public class JavaFXSnapshot extends Application {
 
 @Override
 public void start(Stage primaryStage) {
 
 StackPane root = new StackPane();
 Scene scene = new Scene(root, 300, 250);
 
 Button btn = new Button();
 btn.setText("Say 'Hello World'");
 btn.setOnAction(new EventHandler<ActionEvent>() {
 
 @Override
 public void handle(ActionEvent event) {
 System.out.println("Hello World!");
 takeSnapShot(scene);
 
 }
 });
 root.getChildren().add(btn);
 primaryStage.setTitle("Hello World!");
 primaryStage.setScene(scene);
 primaryStage.show();
 }
 public static void main(String[] args) {
 launch(args);
 }
 
 private void takeSnapShot(Scene scene){
 WritableImage writableImage = 
 new WritableImage((int)scene.getWidth(), (int)scene.getHeight());
 scene.snapshot(writableImage);
 
 File file = new File("snapshot.png");
 try {
 ImageIO.write(SwingFXUtils.fromFXImage(writableImage, null), "png", file);
 System.out.println("snapshot saved: " + file.getAbsolutePath());
 } catch (IOException ex) {
 Logger.getLogger(JavaFXSnapshot.class.getName()).log(Level.SEVERE, null, ex);
 }
 }
 
}

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