import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Point;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.WindowConstants;

public class Visualizer extends JFrame {

	private static final long serialVersionUID = -6754436015453195809L;

	private static final int RANGE = 512;

	JProgressBar panX, panY, tiltX, tiltY, twist, zoom;

	JPanel panXY, tiltXY, twistZoomXY;

	JLabel leftButton;

	JLabel rightButton;

	public Visualizer() {
		super("SpaceNavigator PE Visualizer");
		setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
		initComponents();
		pack();
		setPreferredSize(new Dimension(640, 480));
		setVisible(true);
	}

	public void setPanXValue(int value) {
		// pan left/right axis
		panX.setValue(value);
		drawCrossHair(panXY, panX.getValue(), panY.getValue() * -1, "Pan");
	}

	public void setPanYValue(int value) {
		// pan fwd/back axis
		panY.setValue(value);
		drawCrossHair(panXY, panX.getValue(), panY.getValue() * -1, "Pan");
	}

	public void setZoomValue(int value) {
		// push/pull axis
		zoom.setValue(value);
		drawCrossHair(twistZoomXY, twist.getValue(), zoom.getValue() * -1,
				"Zoom/Twist");
	}

	public void setTiltYValue(int value) {
		// tilt fwd/back axis
		tiltY.setValue(value);
		drawCrossHair(tiltXY, tiltX.getValue(), tiltY.getValue() * -1, "Tilt");
	}

	public void setTiltXValue(int value) {
		// tilt left/right axis
		tiltX.setValue(value);
		drawCrossHair(tiltXY, tiltX.getValue(), tiltY.getValue() * -1, "Tilt");
	}

	public void setTwistValue(int value) {
		// twist axis
		twist.setValue(value);
		drawCrossHair(twistZoomXY, twist.getValue(), zoom.getValue(),
				"Zoom/Twist");
	}

	public void setButtonsValue(int buttons_mask) {
		if (buttons_mask == 1 || buttons_mask == 3) {
			leftButton.setText("ON");
		} else {
			leftButton.setText("OFF");
		}
		if (buttons_mask == 2 || buttons_mask == 3) {
			rightButton.setText("ON");
		} else {
			rightButton.setText("OFF");
		}
	}

	private void drawCrossHair(JPanel panel, int x, int y, String text) {
		clearPanel(panel);

		Point point = calcualteCoordinates(panel, x, y);

		Graphics g = panel.getGraphics();
		g.setColor(Color.GREEN);
		g.drawString(text, 5, 10);
		g.drawLine(point.x - 3, point.y, point.x + 3, point.y);
		g.drawLine(point.x, point.y - 3, point.x, point.y + 3);
	}

	private Point calcualteCoordinates(JPanel panel, int x, int y) {

		int width = panel.getWidth();
		int halfWidth = (int) ((double) width / (double) 2);
		double xMultiplier = halfWidth / (double) RANGE;
		if (x == 0) {
			x = halfWidth;
		} else {
			x = (int) (x * xMultiplier + halfWidth);
		}

		int height = panel.getHeight();
		int halfHeight = (int) ((double) height / (double) 2);
		double yMultiplier = halfHeight / (double) RANGE;

		if (y == 0) {
			y = halfHeight;
		} else {
			y = (int) (y * yMultiplier + halfHeight);
		}
		return new Point(x, y);
	}

	private void clearPanel(JPanel panel) {
		Graphics g = panel.getGraphics();
		g.setColor(Color.BLACK);
		g.fillRect(0, 0, panel.getWidth(), panel.getHeight());
	}

	private void initComponents() {
		Container contentPane = getContentPane();
		contentPane.setLayout(new BorderLayout());

		Container pan = new Container();
		pan.setLayout(new BorderLayout());

		Container tilt = new Container();
		tilt.setLayout(new BorderLayout());

		Container twistZoom = new Container();
		twistZoom.setLayout(new BorderLayout());

		Container valuesContainer = new Container();
		valuesContainer.setLayout(new FlowLayout());

		JLabel leftButtonLabelText = new JLabel("Left Button: ");
		leftButton = new JLabel("OFF");
		JLabel spaceLabelText = new JLabel("      ");
		JLabel rightButtonLabelText = new JLabel("Right Button: ");
		rightButton = new JLabel("OFF");
		valuesContainer.add(leftButtonLabelText);
		valuesContainer.add(leftButton);
		valuesContainer.add(spaceLabelText);
		valuesContainer.add(rightButtonLabelText);
		valuesContainer.add(rightButton);

		panXY = new JPanel();
		tiltXY = new JPanel();
		twistZoomXY = new JPanel();

		contentPane.add(valuesContainer, BorderLayout.NORTH);
		contentPane.add(pan, BorderLayout.WEST);
		contentPane.add(tilt, BorderLayout.CENTER);
		contentPane.add(twistZoom, BorderLayout.EAST);
		panX = new JProgressBar(JProgressBar.HORIZONTAL, -RANGE, RANGE);
		panX.setValue(0);

		panY = new JProgressBar(JProgressBar.VERTICAL, -RANGE, RANGE);
		panY.setValue(0);

		pan.add(panX, BorderLayout.SOUTH);
		pan.add(panY, BorderLayout.WEST);
		pan.add(panXY, BorderLayout.CENTER);

		tiltX = new JProgressBar(JProgressBar.HORIZONTAL, -RANGE, RANGE);
		tiltX.setValue(0);

		tiltY = new JProgressBar(JProgressBar.VERTICAL, -RANGE, RANGE);
		tiltY.setValue(0);

		tilt.add(tiltX, BorderLayout.SOUTH);
		tilt.add(tiltY, BorderLayout.WEST);
		tilt.add(tiltXY, BorderLayout.CENTER);

		twist = new JProgressBar(JProgressBar.HORIZONTAL, -RANGE, RANGE);
		twist.setValue(0);

		zoom = new JProgressBar(JProgressBar.VERTICAL, -RANGE, RANGE);
		zoom.setValue(0);

		twistZoom.add(twist, BorderLayout.SOUTH);
		twistZoom.add(zoom, BorderLayout.WEST);
		twistZoom.add(twistZoomXY, BorderLayout.CENTER);
	}
}