package SW22;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import java.text.DecimalFormat;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JOptionPane;

import java.awt.Font;
import javax.swing.SwingConstants;
import javax.swing.JTextField;
import java.awt.Color;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class gui_test extends JFrame {

	private JPanel contentPane;
	private JTextField tfKatheteA;
	private JTextField tfHypotenuseC;
	private JTextField tfKatheteB;
	private JTextField tfFlaecheA;
	private JTextField tfAlpha;
	private JTextField tfBeta;
	private JTextField tfUmfang;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					gui_test frame = new gui_test();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public gui_test() 
	{
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 508, 321);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel lblNewLabel = new JLabel("Rechtwinkliges Dreieck: Gesucht Kathete b");
		lblNewLabel.setBounds(0, 11, 434, 30);
		lblNewLabel.setHorizontalAlignment(SwingConstants.CENTER);
		lblNewLabel.setFont(new Font("Tahoma", Font.PLAIN, 16));
		contentPane.add(lblNewLabel);
		
		JLabel lblNewLabel_1 = new JLabel("Eingabe");
		lblNewLabel_1.setBounds(25, 42, 96, 20);
		lblNewLabel_1.setFont(new Font("Tahoma", Font.PLAIN, 14));
		contentPane.add(lblNewLabel_1);
		
		JLabel lblNewLabel_2 = new JLabel("Kathete a [cm]:");
		lblNewLabel_2.setBounds(35, 73, 101, 14);
		lblNewLabel_2.setFont(new Font("Tahoma", Font.PLAIN, 12));
		contentPane.add(lblNewLabel_2);
		
		JLabel lblHypotenuseCcm = new JLabel("Hypotenuse c [cm]");
		lblHypotenuseCcm.setBounds(35, 108, 121, 14);
		lblHypotenuseCcm.setFont(new Font("Tahoma", Font.PLAIN, 12));
		contentPane.add(lblHypotenuseCcm);
		
		tfKatheteA = new JTextField();
		tfKatheteA.setBounds(159, 71, 52, 20);
		tfKatheteA.setBackground(new Color(154, 205, 50));
		tfKatheteA.setFont(new Font("Tahoma", Font.PLAIN, 12));
		contentPane.add(tfKatheteA);
		tfKatheteA.setColumns(10);
		
		tfHypotenuseC = new JTextField();
		tfHypotenuseC.setBounds(159, 106, 52, 20);
		tfHypotenuseC.setBackground(new Color(154, 205, 50));
		tfHypotenuseC.setFont(new Font("Tahoma", Font.PLAIN, 12));
		tfHypotenuseC.setColumns(10);
		contentPane.add(tfHypotenuseC);
		
		JLabel lblAusgabe = new JLabel("Ausgabe");
		lblAusgabe.setBounds(259, 47, 96, 20);
		lblAusgabe.setFont(new Font("Tahoma", Font.PLAIN, 14));
		contentPane.add(lblAusgabe);
		
		tfKatheteB = new JTextField();
		tfKatheteB.setFont(new Font("Tahoma", Font.PLAIN, 12));
		tfKatheteB.setColumns(10);
		tfKatheteB.setBackground(new Color(230, 230, 250));
		tfKatheteB.setBounds(407, 70, 52, 20);
		contentPane.add(tfKatheteB);
		
		JLabel label = new JLabel("Kathete b [cm]:");
		label.setFont(new Font("Tahoma", Font.PLAIN, 12));
		label.setBounds(269, 73, 101, 14);
		contentPane.add(label);
		
		JLabel lblFlcheAcm = new JLabel("Fl\u00E4che A  [cm\u00B2]:");
		lblFlcheAcm.setFont(new Font("Tahoma", Font.PLAIN, 12));
		lblFlcheAcm.setBounds(269, 108, 101, 14);
		contentPane.add(lblFlcheAcm);
		
		JLabel lblWinkelAlpha = new JLabel("Winkel Alpha [\u00B0]");
		lblWinkelAlpha.setFont(new Font("Tahoma", Font.PLAIN, 12));
		lblWinkelAlpha.setBounds(269, 144, 101, 14);
		contentPane.add(lblWinkelAlpha);
		
		JLabel lblWinkelBeta = new JLabel("Winkel Beta [\u00B0]");
		lblWinkelBeta.setFont(new Font("Tahoma", Font.PLAIN, 12));
		lblWinkelBeta.setBounds(269, 178, 101, 14);
		contentPane.add(lblWinkelBeta);
		
		JLabel lblUmfangUcm = new JLabel("Umfang U [cm]:");
		lblUmfangUcm.setFont(new Font("Tahoma", Font.PLAIN, 12));
		lblUmfangUcm.setBounds(269, 207, 101, 14);
		contentPane.add(lblUmfangUcm);
		
		tfFlaecheA = new JTextField();
		tfFlaecheA.setFont(new Font("Tahoma", Font.PLAIN, 12));
		tfFlaecheA.setColumns(10);
		tfFlaecheA.setBackground(new Color(230, 230, 250));
		tfFlaecheA.setBounds(407, 106, 52, 20);
		contentPane.add(tfFlaecheA);
		
		tfAlpha = new JTextField();
		tfAlpha.setFont(new Font("Tahoma", Font.PLAIN, 12));
		tfAlpha.setColumns(10);
		tfAlpha.setBackground(new Color(230, 230, 250));
		tfAlpha.setBounds(407, 142, 52, 20);
		contentPane.add(tfAlpha);
		
		tfBeta = new JTextField();
		tfBeta.setFont(new Font("Tahoma", Font.PLAIN, 12));
		tfBeta.setColumns(10);
		tfBeta.setBackground(new Color(230, 230, 250));
		tfBeta.setBounds(407, 176, 52, 20);
		contentPane.add(tfBeta);
		
		tfUmfang = new JTextField();
		tfUmfang.setFont(new Font("Tahoma", Font.PLAIN, 12));
		tfUmfang.setColumns(10);
		tfUmfang.setBackground(new Color(230, 230, 250));
		tfUmfang.setBounds(407, 205, 52, 20);
		contentPane.add(tfUmfang);
		
		JButton btnBerechnen = new JButton("Berechnen");
		btnBerechnen.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				berechnen();
			}
		});
		btnBerechnen.setBounds(32, 248, 89, 23);
		contentPane.add(btnBerechnen);
		
		JButton btnLoeschen = new JButton("L\u00F6schen");
		btnLoeschen.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				leeren();
			}
		});
		btnLoeschen.setBounds(184, 248, 89, 23);
		contentPane.add(btnLoeschen);
		
		JButton btnEnde = new JButton("Ende");
		btnEnde.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				beenden();
			}
		});
		btnEnde.setBounds(370, 248, 89, 23);
		contentPane.add(btnEnde);
	}   // Ende der Gui-Erstellung
	// Ab hier : Eigene Funktionen
	
	private void beenden() {
		System.exit(0);
	}
	
	private void leeren() {
		tfAlpha.setText(null);
		tfBeta.setText(null);
		tfFlaecheA.setText(null);
		tfHypotenuseC.setText(null);
		tfKatheteA.setText(null);
		tfKatheteB.setText(null);
		tfUmfang.setText(null);

	}
	
	private void berechnen() {
		
		DecimalFormat nk3; 
		nk3 = new DecimalFormat("#.###");
		
		double a, b, c, umfang, flaeche, alpha, beta;
		
		a = Double.parseDouble(tfKatheteA.getText());
		
		c = Double.parseDouble(tfHypotenuseC.getText());
		
		// b = Double.parseDouble(tfKatheteB.getText());
		
		if (c > a){
			
		// Verarbeitung (Formeln)
		b = Math.sqrt(Math.pow(c,2)-Math.pow(a,2));
		flaeche = a * b / 2;
		umfang = a + b + c;
		alpha = Math.atan(a / b) * 180 / Math.PI;
		beta = 90 - alpha;

		// Ausgabe der Ergebnisse
		tfKatheteB.setText(nk3.format(b));
		tfKatheteA.setText(nk3.format(a));
		tfFlaecheA.setText(nk3.format(flaeche));
		tfHypotenuseC.setText(nk3.format(c));
		tfUmfang.setText(nk3.format(umfang));
		tfAlpha.setText(nk3.format(alpha));
		tfBeta.setText(nk3.format(beta));

		}else {
			JOptionPane.showMessageDialog(null, "c muss größer sein!", "Fehlerhafte Eingabe!", JOptionPane.WARNING_MESSAGE);
			tfKatheteA.setText("" + c);
			tfHypotenuseC.setText("" + a);
			JOptionPane.showMessageDialog(null, "Werte wurden getauscht!");

		}
		
	}
	
	
}