package hellofx;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class GUI018 extends Application {

	int l = 50;
	
	@Override
	public void start(Stage mainStage) throws Exception {
		BorderPane bp = new BorderPane();
		
		Rectangle r = new Rectangle(0,0,l,l);
		bp.setCenter(r);
		
		HBox hb = new HBox();
		hb.setAlignment(Pos.CENTER);
		hb.setPadding(new Insets(10,10,10,10));
		hb.setSpacing(10);
		
		Button clickBut = new Button("Bigger");
		clickBut.setOnAction((e) -> {
			l += 5;
			r.setWidth(l);
			r.setHeight(l);
		});
		hb.getChildren().add(clickBut);
		
		Button noClickBut = new Button("Smaller");
		noClickBut.setOnAction((e) -> {
			l -= 5;
			r.setWidth(l);
			r.setHeight(l);
		});
		hb.getChildren().add(noClickBut);
		
		bp.setBottom(hb);
		
		Scene sc = new Scene(bp, 500, 500);
		mainStage.setScene(sc);
		mainStage.show();
	}

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

}