componentprinter.java

为了下东西 随便发了个 datamining 的源代码

/*
 *    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 2006/8/17
 *
 * @Author: Xiaojun Chen
 * $Revision$ 1.0
 *
 */

package eti.bi.alphaminer.tools.print;

import java.awt.Component;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import eti.bi.common.Locale.Resource;

public class ComponentPrinter implements Printable{

	private Component component = null;

	private String[] superscript;
	private String title;
	private String alphaminer = Resource.srcStr("AlphaMiner");
	private static Font TITLE_FONT;

	/** The given component should be printed. */
	public ComponentPrinter(Component component,String title, String[] superscript) {
		this.component = component;
		this.title = title;
		this.superscript = superscript;
		if(this.title==null) {
			this.title = "";
		}
		
		try {
			
			TITLE_FONT = new Font(Resource.srcStr("font"), Font.PLAIN, Integer.parseInt(Resource.srcStr("fontsize")));
		}
		catch(Exception e) {
			e.printStackTrace();
			TITLE_FONT = new Font(Resource.srcStr("font"), Font.PLAIN, 10);
		}
	}

	public int print(Graphics g, PageFormat pageFormat, int pageIndex) {
		if (pageIndex >= 1)
			return NO_SUCH_PAGE;
		
		int i,y;
		Rectangle2D rectAlphaminer = TITLE_FONT.getStringBounds(alphaminer, ((Graphics2D) g).getFontRenderContext());
		g.setFont(TITLE_FONT);
		y = (int)(pageFormat.getImageableY()+rectAlphaminer.getHeight())+1;
		g.drawString(alphaminer,(int)pageFormat.getImageableX(),y);
		
		if(superscript!=null) {
			
			for(i=0;i<superscript.length;i++) {
				rectAlphaminer = TITLE_FONT.getStringBounds(superscript[i], ((Graphics2D) g).getFontRenderContext());
				y += (int)rectAlphaminer.getHeight()+1;
				g.drawString(superscript[i],(int)pageFormat.getImageableX(),y);
			}
		}
		
		Rectangle2D rectTitle = TITLE_FONT.getStringBounds(title, ((Graphics2D) g).getFontRenderContext());
		y += (int)rectTitle.getHeight()+ 4;
		g.drawString(title, (int) (pageFormat.getImageableX() + pageFormat.getImageableWidth() / 2 - rectTitle.getWidth() / 2), y);

		y+=3;
		
		Graphics2D translated = (Graphics2D) g.create((int) pageFormat.getImageableX(), y, (int) pageFormat.getImageableWidth(), (int) (pageFormat.getImageableHeight() - y));
		
		component.print(translated);
		translated.dispose();
		return PAGE_EXISTS;
	}

}