splashscreen.java

一个很好的LIBSVM的JAVA源码。对于要研究和改进SVM算法的学者。可以参考。来自数据挖掘工具YALE工具包。

/*
 *  YALE - Yet Another Learning Environment
 *  Copyright (C) 2001-2004
 *      Simon Fischer, Ralf Klinkenberg, Ingo Mierswa, 
 *          Katharina Morik, Oliver Ritthoff
 *      Artificial Intelligence Unit
 *      Computer Science Department
 *      University of Dortmund
 *      44221 Dortmund,  Germany
 *  email: [e-mail]
 *  web:   http://yale.cs.uni-dortmund.de/
 *
 *  This program 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 2 of the
 *  License, or (at your option) any later version. 
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 *  USA.
 */
package edu.udo.cs.yale.gui;

import edu.udo.cs.yale.tools.Tools;

import java.awt.Color;
import java.awt.Paint;
import java.awt.Image;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import javax.imageio.ImageIO;
import java.io.File;
import java.io.IOException;
import javax.swing.JWindow;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;

public class SplashScreen extends InfoBox implements MouseListener {

    private Image logo;
    private static Image javaLogo;
    private static final Paint MAIN_PAINT = Color.lightGray;
    private double logoHeight = 1;
    private double dropSpeed;
    private JWindow window = new JWindow();

    private String message = "Starting up.";

    static {
	try {
	    javaLogo = ImageIO.read(Tools.getResource("java_cup_logo.gif"));
	} catch (IOException e) {
	    e.printStackTrace();
	}
    }

    public SplashScreen(String productName, String version, Image logo) {
	super(400,300, (logo == null) ? 50 : (int)(logo.getHeight(null)*1.2),
	      productName, 48, version, 36);
	this.logo = logo;
	if (logo != null)
	    addMouseListener(this);

	window.getContentPane().add(this);
	window.pack();
	window.setLocation((int)(Toolkit.getDefaultToolkit().getScreenSize().getWidth()/2-window.getWidth()/2),
			   (int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight()/2-window.getHeight()/2));
    }

    public void showSplashScreen() {
	window.show();
    }

    public void dispose() {
	window.dispose();
    }

    protected void drawNorth(Graphics2D g) {
	super.drawNorth(g);
	if (logo != null) {
	    Graphics2D scaled = (Graphics2D)g.create(getWidth() - logo.getWidth(null) - PRODUCT_NAME_X, 
						     (int)(logo.getHeight(null)*0.1) + (int)((1.0-logoHeight)*logo.getHeight(null)),
						     logo.getWidth(null), logo.getHeight(null));
	    scaled.scale(1, logoHeight);
	    scaled.drawImage(logo, 0, 0, null);
	    scaled.dispose();
	}
    }

    public void paint(Graphics g) {
	super.paint(g);
	g.setColor(Color.black);
	g.drawRect(0, 0, getWidth()-1, getHeight()-1);
    }

    public void drawMain(Graphics2D g) {
	g.setPaint(MAIN_PAINT);
	g.fillRect(0, 0, getWidth(), getMainHeight());

	g.setPaint(NORTH_PAINT);
	g.setFont(new java.awt.Font("LucidaSans", java.awt.Font.BOLD, 12));
	g.drawString("YALE - Yet Another Learning Environment", 10, 20);
	g.setFont(new java.awt.Font("LucidaSans", java.awt.Font.BOLD, 10));
	g.drawString(message, 10,35);

	g.setFont(new java.awt.Font("LucidaSans", java.awt.Font.PLAIN, 10));
	g.drawString("Copyright (C) 2001-2004 by", 10, 100);
	g.drawString("Simon Fischer, Ralf Klinkenberg,", 10, 113);
	g.drawString("Ingo Mierswa, Katharina Morik, and Oliver Ritthoff", 10, 126);
	g.drawString("Use is subject to the GNU General Public License", 10, 139);

	if (javaLogo != null)
	    g.drawImage(javaLogo, 335, 85, null);
    }

    public void mouseClicked(MouseEvent e) {
	int lx = getWidth() - logo.getWidth(null) - PRODUCT_NAME_X;
	int ly = (int)(logo.getHeight(null)*0.1);
	if ((e.getX() >= lx) &&
	    (e.getX() >= ly) &&
	    (e.getX() < lx + logo.getWidth(null)) &&
	    (e.getY() < ly + logo.getHeight(null))) {
	    new Thread() {
		    public void run() {
			setPriority(Thread.MIN_PRIORITY);
			dropSpeed = 0.01;
			while (logoHeight > 0) {
			    logoHeight -= dropSpeed;
			    dropSpeed += 0.01;
			    repaint();
			    try {
				Thread.sleep(50);
			    } catch (InterruptedException e) {}
			}
		    }
		}.start();
	}
    }
    public void mousePressed(MouseEvent param1) {}
    public void mouseReleased(MouseEvent param1) {}
    public void mouseEntered(MouseEvent param1) {}
    public void mouseExited(MouseEvent param1) {}

    public void setMessage(String message) {
	this.message = message;
	repaint();
    }    
}