verdandi.ui.SplashWindow.java Source code

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Here is the source code for verdandi.ui.SplashWindow.java

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/*******************************************************************************
 * Copyright 2010 Olaf Sebelin
 * 
 * This file is part of Verdandi.
 * 
 * Verdandi is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Verdandi is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Verdandi.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
/*
 * Created on 13.11.2006
 * Author: osebelin
 *
 */
package verdandi.ui;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.MediaTracker;
import java.awt.Toolkit;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JWindow;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

@SuppressWarnings("serial")
public class SplashWindow extends JWindow {

    private static final Log LOG = LogFactory.getLog(SplashWindow.class);

    private MediaTracker tracker;

    public SplashWindow(MediaTracker _tracker) {
        tracker = _tracker;
    }

    public void init() {
        URL imageURL = null;
        InputStream descrIn = getClass().getClassLoader().getResourceAsStream("splash/content");
        if (descrIn != null) {
            BufferedReader br = new BufferedReader(new InputStreamReader(descrIn));
            List<String> lines = new ArrayList<String>(50);
            try {
                for (String line = br.readLine(); line != null; line = br.readLine()) {
                    lines.add(line.trim());
                }
                Random rnd = new Random();
                int index = rnd.nextInt(lines.size());
                imageURL = Thread.currentThread().getContextClassLoader().getResource("splash/" + lines.get(index));
            } catch (IOException e) {
                LOG.error("Cannot load random splash data", e);
            }
        } else {
            LOG.debug("No random splash manifest found.");
        }
        if (imageURL == null) {
            LOG.debug("Random splash image not found. Using fallback");
            imageURL = Thread.currentThread().getContextClassLoader().getResource("splash.png");
        }

        ImageIcon icon = new ImageIcon(imageURL);
        tracker.addImage(icon.getImage(), 1);
        JLabel l = new JLabel(icon);
        getContentPane().add(l, BorderLayout.CENTER);
        pack();
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension labelSize = l.getPreferredSize();
        setLocation(screenSize.width / 2 - (labelSize.width / 2), screenSize.height / 2 - (labelSize.height / 2));
        setVisible(true);
        screenSize = null;
        labelSize = null;
    }

}