exportppm.java

来自「用Java开发的、实现类似Visio功能的应用程序源码」· Java 代码 · 共 78 行

/**
 *    $Id: ExportPPM.java $
 *
 *    Copyright 2004 ~ 2005 JingFei International Cooperation LTD. All rights reserved.
 *
 */
package com.jfimagine.jfgraph.transfer;
  

import java.io.OutputStream;
import java.io.DataOutputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import java.awt.image.BufferedImage;

import org.freehep.graphicsio.ppm.PPMEncoder;  

import com.jfimagine.utils.log.*;
 /**
 * ExportPPM class is used to output PPM images.
 *
 * @author     CookieMaker    
 *
 * @version $Revision: 1.3.0 $
 */ 
 
public class ExportPPM extends ExportBase{

	/**an internal log utility*/
	private JFLogger m_logger=JFLogManager.getLogger(this.getClass());
	
   	/** 
    	*  Export current page or list to a specified file.
    	*  @param fileName A specified file name to be exported.
    	*/
   	public boolean export(String fileName){
		try{    
		
			BufferedImage image	=getImage();

			OutputStream out =
        			new DataOutputStream(
        				new BufferedOutputStream(
        					new FileOutputStream(fileName)));
			
			PPMEncoder encoder	=new PPMEncoder(image,out);
			encoder.encode();
			
        		
        		return true;        		

        	}catch(IOException e){
			m_logger.error("export:"+e);	
        		return false;
        	}
        	
       }
 
   	/** 
    	*  get export file extension.
    	*  @return the export file extension.
    	*/
   	public String getExportFileExt(){
   		return JFFileFilter.FILEEXT_PPM;
	}

   	/** 
    	*  get export file description
    	*  @return the export file description
    	*/
   	public String getExportFileDesc(){
   		return JFFileFilter.FILEDESC_PPM;
	}
 
}