cvs commit: jakarta-jmeter/src/core/org/apache/jmeter/save SaveGraphicsService.java

[wo...@apache.org]

woolfel     2004/06/07 17:45:39

  Added:       src/core/org/apache/jmeter/save SaveGraphicsService.java
  Log:
  New class for saving Graphics. I still haven't figured out how to set the
  compression level for JPeg, so that it is higher quality. have to dig
  around a bit and figure that out.
  
  peter
  
  Revision  Changes    Path
  1.1                  jakarta-jmeter/src/core/org/apache/jmeter/save/SaveGraphicsService.java
  
  Index: SaveGraphicsService.java
  ===================================================================
  // $Header: 
  /*
   * Copyright 2001-2004 The Apache Software Foundation.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   * 
  */
  package org.apache.jmeter.save;
  
  import java.awt.Color;
  import java.awt.Dimension;
  import java.awt.Graphics2D;
  import java.awt.image.BufferedImage;
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  
  import javax.swing.JComponent;
  
  import com.sun.image.codec.jpeg.JPEGCodec;
  import com.sun.image.codec.jpeg.JPEGImageEncoder;
  
  /**
   * Class is responsible for taking a component and saving it
   * as a JPEG. The class is very simple. It provides one
   * method saveJComponent(filename,Component). This means any
   * GUI component can be passed to the save service. Logic
   * governing which panels can be saved is completely 
   * external to the save service.
   */
  public class SaveGraphicsService implements SaveServiceConstants {
  
  	/**
  	 * 
  	 */
  	public SaveGraphicsService() {
  		super();
  	}
  
  	/**
  	 * Method saves a given component to a file as a
  	 * JPeg.
  	 * @param filename
  	 * @param component
  	 */
  	public void saveJComponent(String filename, JComponent component)
  	{
  		Dimension size = component.getSize();
  		BufferedImage image = new BufferedImage(size.width, size.height,
  			BufferedImage.TYPE_INT_RGB);
  		Graphics2D grp = image.createGraphics();
  		component.setBackground(Color.white);
  		component.paint(grp);
  		
  		File outfile = new File(filename);
  		System.out.println("file: " + outfile.getAbsolutePath());
  		FileOutputStream fos = createFile(outfile);
  		JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(fos);
  		try {
  			encoder.encode(image);
  			fos.close();
  		} catch (Exception e){
  			// for now do nothing with the exception
  			e.printStackTrace();
  		}
  	}
  
  	/**
  	 * Create a new file for the graphics. Since the method
  	 * creates a new file, we shouldn't get a FNFE.
  	 * @param filename
  	 * @return
  	 */
  	public FileOutputStream createFile(File filename){
  		try {
  			return new FileOutputStream(filename);
  		} catch (FileNotFoundException e){
  			e.printStackTrace();
  			return null;
  		}
  	}
  	
  }
  
  
  

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