I'm interested how I can display "Loading" message during JavaFX startup. I noticed for example that when I start SceneBuilder I have to wait ~5 seconds before the application is displayed in front of the user. Can I for example display some message during JVM start time?
UPDATE
I tested this code:
public class test extends Application
{
private Pane splashLayout;
private ProgressBar loadProgress;
private Label progressText;
private WebView webView;
private Stage mainStage;
private static final int SPLASH_WIDTH = 676;
private static final int SPLASH_HEIGHT = 227;
public static void main(String[] args) throws Exception
{
launch(args);
}
@Override
public void init()
{
ImageView splash = new ImageView(new Image("http://fxexperience.com/wp-content/uploads/2010/06/logo.png"));
loadProgress = new ProgressBar();
loadProgress.setPrefWidth(SPLASH_WIDTH - 20);
progressText = new Label("Loading System Modules ...");
splashLayout = new VBox();
splashLayout.getChildren().addAll(splash, loadProgress, progressText);
progressText.setAlignment(Pos.CENTER);
splashLayout.setStyle("-fx-padding: 5; -fx-background-color: cornsilk; -fx-border-width:5; -fx-border-color: linear-gradient(to bottom, chocolate, derive(chocolate, 50%));");
splashLayout.setEffect(new DropShadow());
}
@Override
public void start(final Stage initStage) throws Exception
{
showSplash(initStage);
showMainStage();
webView.getEngine().documentProperty().addListener(new ChangeListener<Document>()
{
@Override
public void changed(ObservableValue<? extends Document> observableValue, Document document, Document document1)
{
if (initStage.isShowing())
{
loadProgress.progressProperty().unbind();
loadProgress.setProgress(1);
progressText.setText("All Modules Are Loaded!");
mainStage.setIconified(false);
initStage.toFront();
FadeTransition fadeSplash = new FadeTransition(Duration.seconds(1.2), splashLayout);
fadeSplash.setFromValue(1.0);
fadeSplash.setToValue(0.0);
fadeSplash.setOnFinished(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent actionEvent)
{
initStage.hide();
}
});
fadeSplash.play();
}
}
});
}
private void showMainStage()
{
mainStage = new Stage(StageStyle.DECORATED);
mainStage.setTitle("FX Experience");
mainStage.setIconified(true);
// create a WebView.
webView = new WebView();
webView.getEngine().load("http://fxexperience.com/");
loadProgress.progressProperty().bind(webView.getEngine().getLoadWorker().workDoneProperty().divide(100));
// layout the scene.
Scene scene = new Scene(webView, 1000, 600);
webView.prefWidthProperty().bind(scene.widthProperty());
webView.prefHeightProperty().bind(scene.heightProperty());
mainStage.setScene(scene);
mainStage.show();
}
private void showSplash(Stage initStage)
{
Scene splashScene = new Scene(splashLayout);
initStage.initStyle(StageStyle.UNDECORATED);
final Rectangle2D bounds = Screen.getPrimary().getBounds();
initStage.setScene(splashScene);
initStage.setX(bounds.getMinX() + bounds.getWidth() / 2 - SPLASH_WIDTH / 2);
initStage.setY(bounds.getMinY() + bounds.getHeight() / 2 - SPLASH_HEIGHT / 2);
initStage.show();
}
}
I noticed that the splash image is started with the main stage simultaneity but the main stage is minimized. Can I freeze the appearance of the main stage until the splash screen is completed with the loading. I want to do some internal checks before I display the main stage.
