imagesaveform.java

手机赛车蓝牙连接

/*****************************************************************************

 Description: ImageSaveForm
 * The ImageSaveform contains a ImageItem, that is a down scaled version of the snapshot.
 * It also contains a textfield to enter the filename which throws e picture should be 
 * saved as.
 
 Created By: Johan Kateby
 
 @file        ImageSaveForm.java

 COPYRIGHT All rights reserved Sony Ericsson Mobile Communications AB 2004.
 The software is the copyrighted work of Sony Ericsson Mobile Communications AB.
 The use of the software is subject to the terms of the end-user license 
 agreement which accompanies or is included with the software. The software is 
 provided "as is" and Sony Ericsson specifically disclaim any warranty or 
 condition whatsoever regarding merchantability or fitness for a specific 
 purpose, title or non-infringement. No warranty of any kind is made in 
 relation to the condition, suitability, availability, accuracy, reliability, 
 merchantability and/or non-infringement of the software provided herein.

*****************************************************************************/
import javax.microedition.lcdui.*;
import java.util.*;

public class ImageSaveForm extends Form implements FileActionInvoker, CommandListener{
    private ImageItem imageItem;
    private TextField tf_fileName, tf_directory;
    private Command editCommand, saveCommand, backCommand;
    private StringItem si_homeDir; 
    private Displayable next;
    private final byte[] imByte;
    private FileAction fileAction;
    
    Image image;
    /** Creates a new instance of ImageSaveForm */
    public ImageSaveForm(byte[] imByte, Displayable next) {
        super("INFO:");
        fileAction = new FileAction(this);
        
        this.imByte=imByte;
        this.next=next;
        
        saveCommand = new Command("Save",Command.SCREEN,1); 
        backCommand = new Command("Back",Command.SCREEN,1); 
        image = Image.createImage(imByte, 0, imByte.length);
        imageItem = new ImageItem("", PropertyClass.scaleDownImage(image, 0.25),  Item.LAYOUT_RIGHT, "pic");
        imageItem.setLayout(Item.LAYOUT_LEFT);
        tf_fileName = new TextField("save picture as", "", 13, 0);
        tf_directory = new TextField("", "Dir"+PropertyClass.HOME_DIR, 20, 0);
  
        this.addCommand(saveCommand);
        this.addCommand(backCommand);
        this.setCommandListener(this);
        this.append(imageItem);
        this.append(tf_fileName);
        this.append(tf_directory);
              
    }
 
     public void commandAction(Command c, Displayable s){
           
        
        if (c==saveCommand)
        {
            // If the user wants to save the snapshot we start a new thread 
            // and use the fileAction object to save the snapshot as a file
            // the fileAction object will call the fileSavedComplete method when finished.
            final String fileName=tf_fileName.getString();
            if(fileName!="")
            new Thread(new Runnable() {
                public void run() {
                    
                    fileAction.saveFile(PropertyClass.HOME_DIR+fileName+".jpg",imByte );
                }
            }).start();

        }
        if (c==backCommand)
        {
            System.out.println("BACK");
                FileConnectionDemoMidlet.display.setCurrent(next);
        }
            
          
        }
        
    

    public void updateDirList(Enumeration CurrentDirEnum, boolean isRoot){}
    
    public void ImageReceived(Image image){}
    
    // This method is called by the FileAction object when it is finished with saving 
    // content to a file
    public void fileSavedComplete(String msg)
    {
        this.setTitle("INFO: "+msg);
    }

}