helpcursor.java

一个数据挖掘软件ALPHAMINERR的整个过程的JAVA版源代码

/*
 *    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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 * Created on 2005/7/28
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package eti.bi.alphaminer.jhelpcomponent;

import java.awt.Image;
import java.awt.Toolkit;
import java.awt.Point;
import java.awt.Cursor;
import java.awt.HeadlessException;

import java.lang.IndexOutOfBoundsException;

import eti.bi.util.ResourceLoader;
import eti.bi.common.ImageLocation;
import eti.bi.exception.SysException;

/**
 * @author tyleung
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class HelpCursor {
	private Cursor m_HelpCursor;
	private Image imageInstance;
	
    public HelpCursor() {
        try {
            imageInstance = ResourceLoader.getImage(ImageLocation.HELPCURSOR);
//            imageInstance = imageInstance.getScaledInstance(32,32,Image.SCALE_SMOOTH);
        } catch (SysException se) {
	        System.out.println("cannot create cursor image.");
	        System.out.println(se.toString());
	    }
        
	    try {
	        m_HelpCursor = Toolkit.getDefaultToolkit().createCustomCursor(
	                imageInstance,
		            new Point(),
		            "helpCursor");
	    } catch (IndexOutOfBoundsException ie) {
	        System.out.println("Cannot create cursor.");
	        System.out.println(ie.toString());
	    } catch (HeadlessException he) {
	        System.out.println("cannot create cursor.");
	        System.out.println(he.toString());
	    }
	    
	    if ( m_HelpCursor == null )
	        System.out.println("can't get cursor image");
    }
    
    public Cursor getCursor() {
        return m_HelpCursor;
    }
}