[Ejtools-cvs] libraries/common/src/main/org/ejtools/util/export PNGTools.java,NONE,1.1

[<let...@us...>]

Update of /cvsroot/ejtools/libraries/common/src/main/org/ejtools/util/export
In directory sc8-pr-cvs1:/tmp/cvs-serv20661/common/src/main/org/ejtools/util/export

Added Files:
	PNGTools.java 
Log Message:
Adjust Eclipse build files
Adjust some Javadoc
Integrate Persistence framework
Integrate Image export as PNG



--- NEW FILE: PNGTools.java ---
/*
 * EJTools, the Enterprise Java Tools
 *
 * Distributable under LGPL license.
 * See terms of license at www.gnu.org.
 */
package org.ejtools.util.export;

import java.awt.Component;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.IOException;

import javax.swing.JFileChooser;
import javax.swing.filechooser.FileFilter;

import org.apache.log4j.Logger;
import org.ejtools.util.Platform;


/**
 * Description of the Class
 *
 * @author    Laurent Etiemble
 * @version   $Revision: 1.1 $
 */
public class PNGTools
{
   /** Description of the Field */
   private static FileFilter PNG_FILE_FILTER =
      new FileFilter()
      {
         public boolean accept(File file)
         {
            return file.getName().endsWith(".png");
         }


         public String getDescription()
         {
            return "PNG image (*.png)";
         }
      };
   /** Description of the Field */
   private static Logger logger = Logger.getLogger(PNGTools.class);


   /**Constructor for the PNGCreator object */
   private PNGTools()
   {
      super();
   }


   /**
    * Description of the Method
    *
    * @param image   Description of the Parameter
    * @param output  Description of the Parameter
    */
   public static void exportAsPNG(RenderedImage image, File output)
   {
      if (Platform.isJavaVersionCompatible(Platform.JAVA_1_4))
      {
         try
         {
            // Qualified name is mandatory
            javax.imageio.ImageIO.write(image, "PNG", output);
         }
         catch (IOException ioe)
         {
            logger.error("Can't export image as PNG", ioe);
         }
      }
   }


   /**
    * Description of the Method
    *
    * @param component  Description of the Parameter
    * @param output     Description of the Parameter
    */
   public static void exportAsPNG(Component component, File output)
   {
      if (Platform.isJavaVersionCompatible(Platform.JAVA_1_4))
      {
         try
         {
            BufferedImage image = new BufferedImage(component.getWidth(), component.getHeight(), BufferedImage.TYPE_INT_ARGB);
            component.paint(image.getGraphics());
            // Qualified name is mandatory
            javax.imageio.ImageIO.write(image, "PNG", output);
         }
         catch (IOException ioe)
         {
            logger.error("Can't export image as PNG", ioe);
         }
      }
   }


   /**
    * Description of the Method
    *
    * @return   Description of the Return Value
    */
   public static File selectPNGFile()
   {
      // Fix for JFileChooser/SecurityManager bug (#4264750)
      SecurityManager s = System.getSecurityManager();
      System.setSecurityManager(null);

      // Choose file
      JFileChooser chooser = new JFileChooser(System.getProperty("user.dir"));
      chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
      chooser.setFileFilter(PNG_FILE_FILTER);
      int returnVal = chooser.showSaveDialog(null);
      System.setSecurityManager(s);
      if (returnVal != JFileChooser.APPROVE_OPTION)
      {
         return null;
      }
      return chooser.getSelectedFile();
   }
}