Splashscreen für die Zeit während der FXMLLoader arbeitet erstellt.

src/main/java/de/uniluebeck/mi/projmi6/Main.java

@@ -2,33 +2,110 @@ package de.uniluebeck.mi.projmi6;
 
 import de.uniluebeck.mi.projmi6.controller.MainController;
 import javafx.application.Application;
+import javafx.concurrent.Task;
 import javafx.fxml.FXMLLoader;
+import javafx.geometry.Insets;
+import javafx.geometry.Pos;
 import javafx.scene.Parent;
 import javafx.scene.Scene;
 import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.Background;
+import javafx.scene.layout.BackgroundFill;
+import javafx.scene.layout.CornerRadii;
+import javafx.scene.layout.VBox;
+import javafx.scene.paint.Paint;
+import javafx.scene.text.Font;
+import javafx.scene.text.Text;
 import javafx.stage.Stage;
+import javafx.stage.StageStyle;
+
 
 public class Main extends Application {
 
+    /**
+     * Cuz building the GUI from FXML is a bit costly,
+     * it's done from its own thread.
+     */
+    private Task<Parent> loadMainWindowTask = new Task<Parent>(){
+
+        @Override
+        protected Parent call() throws Exception {
+            FXMLLoader fxmlLoader = new FXMLLoader();
+            fxmlLoader.setLocation(getClass().getClassLoader().getResource("main.fxml"));
+
+            MainController mainController = new MainController();
+            fxmlLoader.setControllerFactory(mainController.getControllerFactory());
+
+            Parent root = fxmlLoader.load();
+
+            return root;
+        }
+    };
+
+    /**
+     * The applications logo (an owl).
+     */
+    private Image icon = new Image("icon.png", true);
+
+
     @Override
-    public void start(Stage primaryStage) throws Exception {
+    public void start(Stage primaryStage)  {
         System.out.println(getClass().getClassLoader().getResource("").toExternalForm());
 
-        FXMLLoader fxmlLoader = new FXMLLoader();
-        fxmlLoader.setLocation(getClass().getClassLoader().getResource("main.fxml"));
+        primaryStage.getIcons().add(icon);
+
+        Stage loadingMessage = createLoadWindow();
 
-        MainController mainController = new MainController();
-        fxmlLoader.setControllerFactory(mainController.getControllerFactory());
 
-        primaryStage.getIcons().add(new Image("icon.png"));
-        Parent root = fxmlLoader.load();
+        loadMainWindowTask.setOnSucceeded(event -> {
+            Parent root = loadMainWindowTask.getValue();
+
+            loadingMessage.close();
+
+            primaryStage.setTitle("KIS Gruppe 06");
+            primaryStage.setScene(new Scene(root, 1000, 800));
+            primaryStage.show();
+        });
+        Thread thread = new Thread(loadMainWindowTask);
+        thread.setDaemon(true);
+        thread.start();
+
 
-        primaryStage.setTitle("KIS Gruppe 06");
-        primaryStage.setScene(new Scene(root, 1000, 800));
-        primaryStage.show();
     }
 
+    /**
+     * Creates a small, undecorated stage for
+     * showing a splash-screen to the user.
+     *
+     * @return the splash screen
+     */
+    public Stage createLoadWindow(){
+        Text kis = new Text("KIS");
+        kis.setFont(Font.font(50));
+
+        Text gruppe6 = new Text("Gruppe 06");
+        gruppe6.setFont(Font.font(20));
+
+        VBox root = new VBox(gruppe6, new ImageView(icon), kis);
+        root.setSpacing(20);
+        root.setAlignment(Pos.CENTER);
+        Scene scene = new Scene(root, 400, 400);
+
+        Stage stage = new Stage(StageStyle.UNDECORATED);
+        stage.getIcons().add(icon);
+        root.setBackground(new Background(new BackgroundFill(Paint.valueOf("#0093D1"), CornerRadii.EMPTY, Insets.EMPTY)));
+        stage.setScene(scene);
+        stage.show();
+
+        return stage;
+    }
 
+    /**
+     * Applications entry point.
+     *
+     * @param args Commandline parameters
+     */
     public static void main(String[] args) {
         launch(args);
     }