// Brian Brindle
// SwingColorTest.java


import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class SwingColorTest extends JFrame {
	SwingColorControls RGBcontrols, HSBcontrols;
	JPanel swatch;
	
	public SwingColorTest() {
		super("Color Test");
		
		JPanel pane = new JPanel();
		pane.setLayout(new GridLayout(1, 3, 5, 15));
		swatch = new JPanel();
		
		RGBcontrols = new SwingColorControls(this, "Red",
			"Green", "Blue");
		HSBcontrols = new SwingColorControls(this, "Hue",
			"Saturation", "Brightness");
		pane.add(swatch);
		pane.add(RGBcontrols);
		pane.add(HSBcontrols);
		
		setContentPane(pane);
	}
	
	public static void main(String[] args) {
		JFrame frame = new SwingColorTest();
		
		WindowListener l = new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		};
		frame.addWindowListener(l);
		
		frame.pack();
		frame.setVisible(true);
	}
	
	public Insets getInsets() {
		return new Insets(10, 10, 10, 10);
	}
	
	void update(SwingColorControls controlPanel) {
		Color c;
		// get string values from text fields, convert to ints
		int value1 = Integer.parseInt(controlPanel.tfield1.getText());
		int value2 = Integer.parseInt(controlPanel.tfield2.getText());
		int value3 = Integer.parseInt(controlPanel.tfield3.getText());
		
		if (controlPanel == RGBcontrols) {
			// RGB has changed, update HSB
			c = new Color(value1, value2, value3);
			
			// convert RGB values to HSB values
			float[] HSB = Color.RGBtoHSB(value1, value2, value3,
				(new float[3]));
			HSB[0] *= 360;
			HSB[1] *= 100;
			HSB[2] *= 100;
			
			// reset HSB fields
			HSBcontrols.tfield1.setText(String.valueOf((int)HSB[0]));
			HSBcontrols.tfield2.setText(String.valueOf((int)HSB[1]));
			HSBcontrols.tfield3.setText(String.valueOf((int)HSB[2]));
			
		} else {
			// HSB has changed, update RGB
			c = Color.getHSBColor((float)value1 / 360,
				(float)value2 / 100, (float)value3 / 100);
			
			// reset RGB fields
			RGBcontrols.tfield1.setText(String.valueOf(c.getRed()));
			RGBcontrols.tfield2.setText(String.valueOf(c.getGreen()));
			RGBcontrols.tfield3.setText(String.valueOf(c.getBlue()));
		}
		
		// update swatch
		swatch.setBackground(c);
		swatch.repaint();
	}
}

class SwingColorControls extends JPanel
	implements ActionListener, FocusListener {
	
	SwingColorTest frame;
	JTextField tfield1, tfield2, tfield3;
	
	SwingColorControls(SwingColorTest parent,
		String l1, String l2, String l3) {
		
		frame = parent;
		setLayout(new GridLayout(3,2,10,10));
		tfield1 = new JTextField("0");
		tfield2 = new JTextField("0");
		tfield3 = new JTextField("0");
		tfield1.addFocusListener(this);
		tfield2.addFocusListener(this);
		tfield3.addFocusListener(this);
		tfield1.addActionListener(this);
		tfield2.addActionListener(this);
		tfield3.addActionListener(this);
		add(new JLabel(l1, JLabel.RIGHT));
		add(tfield1);
		add(new JLabel(l2, JLabel.RIGHT));
		add(tfield2);
		add(new JLabel(l3, JLabel.RIGHT));
		add(tfield3);
	}
	
	public Insets getInsets() {
		return new Insets(10, 10, 0, 0);
	}
	
	public void actionPerformed(ActionEvent evt) {
		if (evt.getSource() instanceof JTextField)
			frame.update(this);
	}
	
	public void focusLost(FocusEvent evt) {
		frame.update(this);
	}
	
	public void focusGained(FocusEvent evt) { }
}