//Myska-------------------------------------------------------------
this.setOnMouseClicked(event -> {
	System.out.println(event.X);
});

//Klavestnica-------------------------------------------------------
root.setOnKeyPressed(event -> {
	if (event.getCode() == KeyCode.Q) {
		System.out.println("pressed Q")
	}

});


//Button-------------------------------------------------------------
Button btn = new Button("Name");
btn.setOnAction(e -> { 
	System.out.println("button pressed")
});

//Timeline------------------------------------------------------------
Timeline animation = new Timeline(new KeyFrame(Duration.millis(16), e -> {
	for (Kyvadlo k : Kyvadla.ks) {
		k.update();
	}
	panel.paintBallPane();
}));
animation.setCycleCount(Timiline.INDEFINITE);
animation.play();

//PauseTransition------------------------------------------------------
PauseTransition pause = new PauseTransition(Duration.seconds(10));
pause.setOnFinished(e -> {
	System.out.println("Pause Finished");
});



//Image--------------------------------------------------------------
ImageView obrazok = karticka.img;
getChildren().add(obrazok);


//Rectangle-----------------------------------------------------------
getChildren().clear();
Rectangle rectangle = new Rectangle(0, 100, w, h); // (0, 100) top left corner
rectangle.setFill(Color.GRAY);
rectangle.setStroke(Color.BLACK);
rectangle.setStrokeWidth(2);
getChildren().add(rectangle);

//Line-----------------------------------------------------------------
getChildren().clear();
Line line = new Line(x1, y1, x2, y2);
line.setStroke(Color.BLACK);
getChildren().add(line);

//Circle---------------------------------------------------------------
Circle circle = new Circle(x, y, radius)
circle.setFill(Color.RED);
getChildren().add(circle);


//Scene-----------------------------------------------------------
public class App extends Application {
	public void start(Stage primaryStage) {
		MyPane panel = new MyPane();
		Scene scene = new Scene(panel, 500, 500);

		primaryStage.SetTitle("Title");
		primaryStage.setScene(scene);
		primaryStage.show();

	}

	public static void main(String[] args) {
		launch(args);
	}

//Canvas---------------------------------------------------------------
        Canvas canvas = new Canvas(300, 200);
        GraphicsContext gc = canvas.getGraphicsContext2D();

        // Draw a blue circle manually
        gc.setFill(Color.BLUE);
        gc.fillOval(60, 60, 80, 80);

        StackPane root = new StackPane(canvas);
        Scene scene = new Scene(root, 300, 200);

        stage.setTitle("Canvas Example");
        stage.setScene(scene);
        stage.show();

//AnimationTimer-----------------------------------------------------------
new AnimationTimer() {
    @Override
    public void handle(long now) {
        // update positions, redraw, handle input, etc.
    }
}.start();



//Example Pane--------------------------------------------------------------
public class BallPaneHold extends Application {
    private double x = 200;
    private double y = 200;
    private final double radius = 20;
    private final double step = 3;

    private final Set<KeyCode> keysPressed = new HashSet<>();

    @Override
    public void start(Stage stage) {
        Pane root = new Pane();
        Circle ball = new Circle(x, y, radius, Color.BLUE);
        root.getChildren().add(ball);

        Scene scene = new Scene(root, 400, 400);

        // Track key pressed/released
        scene.setOnKeyPressed(e -> keysPressed.add(e.getCode()));
        scene.setOnKeyReleased(e -> keysPressed.remove(e.getCode()));

        // Animation loop
        new AnimationTimer() {
            @Override
            public void handle(long now) {
                if (keysPressed.contains(KeyCode.W)) y -= step;
                if (keysPressed.contains(KeyCode.S)) y += step;
                if (keysPressed.contains(KeyCode.A)) x -= step;
                if (keysPressed.contains(KeyCode.D)) x += step;
                ball.setCenterX(x);
                ball.setCenterY(y);
            }
        }.start();

        stage.setTitle("Pane - Hold WASD");
        stage.setScene(scene);
        stage.show();
        root.requestFocus();
    }

    public static void main(String[] args) {
        launch();
    }
}


//Example Canvas--------------------------------------------------------------
public class BallCanvasHold extends Application {
    private double x = 200;
    private double y = 200;
    private final double radius = 20;
    private final double step = 3;

    private final Set<KeyCode> keysPressed = new HashSet<>();

    @Override
    public void start(Stage stage) {
        Canvas canvas = new Canvas(400, 400);
        GraphicsContext gc = canvas.getGraphicsContext2D();

        Scene scene = new Scene(new StackPane(canvas));

        scene.setOnKeyPressed(e -> keysPressed.add(e.getCode()));
        scene.setOnKeyReleased(e -> keysPressed.remove(e.getCode()));

        new AnimationTimer() {
            @Override
            public void handle(long now) {
                if (keysPressed.contains(KeyCode.W)) y -= step;
                if (keysPressed.contains(KeyCode.S)) y += step;
                if (keysPressed.contains(KeyCode.A)) x -= step;
                if (keysPressed.contains(KeyCode.D)) x += step;
                drawBall(gc);
            }
        }.start();

        stage.setTitle("Canvas - Hold WASD");
        stage.setScene(scene);
        stage.show();
        canvas.requestFocus();
    }

    private void drawBall(GraphicsContext gc) {
        gc.clearRect(0, 0, 400, 400);
        gc.setFill(Color.BLUE);
        gc.fillOval(x - radius, y - radius, radius * 2, radius * 2);
    }

    public static void main(String[] args) {
        launch();
    }
}