package edu.princeton.toy;

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

import edu.princeton.swing.*;

/**
 * TSplashWindow is the splash window which pops up at startup.  Due to the image-specific qualities
 * of the TSplashWindow, this class cannot be generalized for other uses.
 *
 * @author btsang
 * @version 7.1
 */
public class TSplashWindow extends JWindow
{
    private static final Toolkit TOOLKIT = Toolkit.getDefaultToolkit();
    private static final Rectangle TEXT_RECTANGLE = new Rectangle(210, 40, 85, 180);
    private static final String TEXT_STRINGS[] =
    {
        "Author",
        "  B. Tsang",
        null,
        "Advisors",
        "(to be scrambled)",
        "(to be scrambled)",
        "(to be scrambled)",
        null,
        "Version",
        "  " + TMain.getVersion(),
        null,
        "Build Date",
        "  " + TMain.getBuildDate()
    };

    private static final Font HEADING_LABEL_FONT = new Font("Dialog", Font.BOLD,  12);
    private static final Font TEXT_LABEL_FONT    = new Font("Dialog", Font.PLAIN, 11);
    private static final int  SEPARATOR_HEIGHT   = 5;

    private static final Color FONT_COLOR = new Color(102, 102, 153);

    /**
     * Scramble the advisors section (for fun).
     */
    static
    {
        switch ((int)(Math.random() * 6))
        {
          case 0:
            TEXT_STRINGS[4] = "  D. Clark";
            TEXT_STRINGS[5] = "  R. Sedgewick";
            TEXT_STRINGS[6] = "  K. Wayne";
            break;

          case 1:
            TEXT_STRINGS[4] = "  D. Clark";
            TEXT_STRINGS[5] = "  K. Wayne";
            TEXT_STRINGS[6] = "  R. Sedgewick";
            break;

          case 2:
            TEXT_STRINGS[4] = "  R. Sedgewick";
            TEXT_STRINGS[5] = "  K. Wayne";
            TEXT_STRINGS[6] = "  D. Clark";
            break;

          case 3:
            TEXT_STRINGS[4] = "  R. Sedgewick";
            TEXT_STRINGS[5] = "  D. Clark";
            TEXT_STRINGS[6] = "  K. Wayne";
            break;

          case 4:
            TEXT_STRINGS[4] = "  K. Wayne";
            TEXT_STRINGS[5] = "  R. Sedgewick";
            TEXT_STRINGS[6] = "  D. Clark";
            break;

          default:
            TEXT_STRINGS[4] = "  K. Wayne";
            TEXT_STRINGS[5] = "  D. Clark";
            TEXT_STRINGS[6] = "  R. Sedgewick";
        }
    }

    /**
     * Constructs a TSplashWindow, centered in the screen.
     */
    public TSplashWindow()
    {
        super();

        Icon icon = TImageManager.getIcon(
            TImageManager.STARTUP_UNSCALED_IMAGE_GROUP,
            TImageManager.STARTUP_UNSCALED_SPLASH_BACKGROUND
            );
        int width = icon.getIconWidth();
        int height = icon.getIconHeight();

        PTransparentPanel labelPanel = new PTransparentPanel(new GridBagLayout());

        for (int ctr = 0; ctr < TEXT_STRINGS.length; ctr++)
        {
            JComponent label;
            if (TEXT_STRINGS[ctr] != null)
            {
                label = new JLabel(TEXT_STRINGS[ctr]);

                if (!TEXT_STRINGS[ctr].startsWith("  "))
                    label.setFont(HEADING_LABEL_FONT);
                else
                    label.setFont(TEXT_LABEL_FONT);
                label.setForeground(FONT_COLOR);
            }
            else {
                label = new PSpacer(TEXT_RECTANGLE.width, SEPARATOR_HEIGHT);
            }

            labelPanel.add(
                label,
                new GridBagConstraints(
                    0, ctr, 1, 1,
                    0.0, 0.0,
                    GridBagConstraints.NORTHWEST,
                    GridBagConstraints.NONE,
                    new Insets(0, 0, 0, 0),
                    0, 0
                    )
                );
        }

        labelPanel.add(
            new PSpacer(1, 1),
            new GridBagConstraints(
                0, TEXT_STRINGS.length, 1, 1,
                1.0, 1.0,
                GridBagConstraints.NORTHWEST,
                GridBagConstraints.NONE,
                new Insets(0, 0, 0, 0),
                0, 0
                )
            );

        PImagePanel imagePanel = new PImagePanel(
            icon,
            new BorderLayout()
            );

        imagePanel.add(
            new PSpacer(width, TEXT_RECTANGLE.y),
            BorderLayout.NORTH
            );
        imagePanel.add(
            new PSpacer(TEXT_RECTANGLE.x, TEXT_RECTANGLE.height),
            BorderLayout.WEST
            );
        imagePanel.add(
            new PSpacer(width, height - TEXT_RECTANGLE.y - TEXT_RECTANGLE.height),
            BorderLayout.SOUTH
            );
        imagePanel.add(
            new PSpacer(width - TEXT_RECTANGLE.x - TEXT_RECTANGLE.width, TEXT_RECTANGLE.height),
            BorderLayout.EAST
            );
        imagePanel.add(
            labelPanel,
            BorderLayout.CENTER
            );

        getContentPane().add(imagePanel);

        Dimension screenSize = TOOLKIT.getScreenSize();

        setBounds(
            screenSize.width / 2 - width / 2,
            screenSize.height / 2 - height / 2,
            width,
            height
            );
    }
}