how to display text on image which keeps on getting changed ?

[naved momin]

I have successfully manage to display a text on JLabel but when ever i m changing that text , the other text is displayed on the same image to try to rub the orignally writen text with

graphics2d.drawString("",210,50);

but that is not helping me , the originally written text is not going out so that other text which i m drawing appears clearly
my code, can any one has done it before ?

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package RemoteDesktop.NavedMomin.SplashScreen;

import RemoteDesktop.NavedMomin.SetUp.SetUpGUI;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.*;

/**
 *
 * @author Naved Momin<[e-mail]>
 */
public class SplashScreen implements ActionListener{
    
    private JFrame frameSplashScreen;
    private JPanel panel;
    private JLabel labelSplashScreen;
    private JProgressBar progressBar;
    private int i;
    private Timer timer;
    private BufferedImage bufferedImage;
    
    
    public void startSplashScreen()
    {
        frameSplashScreen = new JFrame();
        frameSplashScreen.setUndecorated( true );
        try {
            panel = createPanel();
        } catch (IOException ex) {
            System.out.println( "IOException while creating panel for splash screen " + ex.getMessage() );
        }
        progressBar = createProgressBar();
        timer = createTimer();
        frameSplashScreen.add( panel , BorderLayout.CENTER );
        frameSplashScreen.add( progressBar, BorderLayout.SOUTH );
        frameSplashScreen.pack();
        frameSplashScreen.setResizable( false );
        frameSplashScreen.setLocationRelativeTo( null );
        frameSplashScreen.setVisible( true );
        startTimer();
    }
    
    public static void main( String[] args )
    {
           new SplashScreen().startSplashScreen();
    }

    private JPanel createPanel() throws IOException {
        panel = new JPanel()
        {

            @Override
            protected void paintComponent(Graphics g) {
                displayTextOnImage();
            }
            
        };
        
        
        Image image = (Image) readImage();
        ImageIcon icon = new ImageIcon( image );
        labelSplashScreen = new JLabel( icon );
        panel.add( labelSplashScreen );
        return panel;
    }
    
    private BufferedImage readImage() throws IOException
    {
        InputStream resourceAsStream = SetUpGUI.class.getClassLoader().getResourceAsStream( "RemoteDesktop/"
                        + "NavedMomin/Images/Splash Screen.png" );
        bufferedImage = ImageIO.read( resourceAsStream );
        return ( bufferedImage );
    }

    private JProgressBar createProgressBar() {
        progressBar = new JProgressBar();
        progressBar.setValue( i );
        progressBar.setForeground( new Color( 135,206,250 ) );
        return progressBar;
    }

    private Timer createTimer() {
        timer = new Timer(100, this );
        return timer;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        incrementProgressBarsValue();
    }

    private void startTimer() {
        timer.start();
        System.out.println("timer has been started ....");
    }

    private void incrementProgressBarsValue() {
        if( i <= 100)
        {
            progressBar.setValue( i );
            displayTextOnImage();
            i++;
        }
        else
        {
            timer.stop();
        }
    }

    private void displayTextOnImage() {
//        try {
//            bufferedImage = readImage();
//        } catch (IOException ex) {
//            System.out.println("err while reading image ....");
//        }
        Graphics2D createGraphics = bufferedImage.createGraphics();
        createGraphics.setFont( new Font("Times New Roman", Font.BOLD, 14));
        createGraphics.setPaint( Color.WHITE );
        createGraphics.drawString( "Loading ....." + i , 10, 210 );
        createGraphics.dispose();
        frameSplashScreen.validate();
    }
    
}

[Michael Dunn]

super.paintComponent(g);

[naved momin]

Michael Dunn wrote:super.paintComponent(g);

still not getting the desire result

[Michael Dunn]

you're calling displayTextOnImage() directly,
instead of calling panel.repaint(), which will call
displayTextOnImage()

[naved momin]

Michael Dunn wrote:you're calling displayTextOnImage() directly,
instead of calling panel.repaint(), which will call
displayTextOnImage()

done what you have said but still when i write Loading ... then after few second if I write Welcome then "welcome " appears over loading which makes every thing blur

 panel = new JPanel()
        {

            @Override
            protected void paintComponent(Graphics g) {
                super.paintComponent( g );
//                displayTextOnImage();
                panel.repaint();
            }
            
        };

private void displayTextOnImage() {

        Graphics2D createGraphics = bufferedImage.createGraphics();
        createGraphics.setFont( new Font("Times New Roman", Font.BOLD, 14));
        createGraphics.setPaint( Color.WHITE );
        
        createGraphics.drawString( "Loading ....."   , 10, 210 );
        createGraphics.drawString( "Welcome"   , 10, 210 );
}

[Michael Dunn]

this is what you had

protected void paintComponent(Graphics g) {  
    displayTextOnImage();  
}  
..........
progressBar.setValue( i );  
displayTextOnImage();  
i++;  

this is how it should be

protected void paintComponent(Graphics g) {  
    super.paintComponent(g);//<---added
    displayTextOnImage();  
}  

progressBar.setValue( i );  
//displayTextOnImage();  //do not call directly
panel.repaint();//repaint the panel, super... clears what was there, then calls displayTextOnImage() in paintComponent(..)
i++;  

[naved momin]

Michael Dunn wrote:this is what you had

protected void paintComponent(Graphics g) {  
    displayTextOnImage();  
}  
..........
progressBar.setValue( i );  
displayTextOnImage();  
i++;  

this is how it should be

protected void paintComponent(Graphics g) {  
    super.paintComponent(g);//<---added
    displayTextOnImage();  
}  

progressBar.setValue( i );  
//displayTextOnImage();  //do not call directly
panel.repaint();//repaint the panel, super... clears what was there, then calls displayTextOnImage() in paintComponent(..)
i++;  

what i did ...

private JPanel createPanel() throws IOException {
        panel = new JPanel()
        {

            @Override
            protected void paintComponent(Graphics g) {
                super.paintComponent( g ); <--- i have added
                
                displayTextOnImage(); <-- calling as per your instruction
                
            }
            
        };
}

private void incrementProgressBarsValue() {
        if( i <= 100)
        {
            progressBar.setValue( i );
            //displayTextOnImage(); <-- commented
            panel.repaint(); <-- as per your suggestion
            i++;
        }
        else
        {
            timer.stop();
            disposeSplashScreen();
            new ServerGUI().startServerGUI();
        }
    }

private void displayTextOnImage() {

        Graphics2D createGraphics = bufferedImage.createGraphics();
        createGraphics.setFont( new Font("Times New Roman", Font.BOLD, 14));
        createGraphics.setPaint( Color.WHITE );
        
//        createGraphics.drawString( "Loading ....."   , 10, 210 );
//        createGraphics.drawString( "Helloooo"   , 10, 210 );
////        createGraphics.drawString( "Cores identified ....."   , 10, 210 );
        
        if( i <= 10)
            loading( createGraphics );
        else if( i >= 10 && i <= 20)
            identifyingCores( createGraphics );
        else if( i >= 20 && i <= 50)
            coresIdentified( createGraphics );
        else if( i >= 50 && i <= 70)
            checkingInternetConnectivity( createGraphics );
        else if( i >= 70 && i <= 90 )
            loadingModules( createGraphics );
        
        
        createGraphics.dispose();
        labelSplashScreen.revalidate();
        panel.revalidate();
        frameSplashScreen.validate();
    }

still the out come is not desired , facing same problem , if you want to look at the entire working code please tell me , i will put here

[Michael Dunn]

> still the out come is not desired , facing same problem ,

if it's still blurred, you must be calling displayTextOnImage() directly, elsewhere.

just to make sure we're talking about them same thing, run this, click 'next' a couple of times,
then check the 'clear' checkbox and click 'next' a few more times.
the text will get increasingly more blurred until the checkbox is checked, then will be clear,
until checkbox is unchecked.

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class Testing
{
  String[] months = new java.text.DateFormatSymbols().getMonths();
  int counter;
  JPanel p;
  JPanel p1 = new JPanel();
  JCheckBox cbx = new JCheckBox("Clear");
  JButton btn = new JButton("Next");
  public void buildGUI()
  {
    p = new JPanel(){
      @Override
      protected void paintComponent(Graphics g)
      {
        if(cbx.isSelected()) super.paintComponent(g);
        g.drawString(months[counter],50,50);
      }
    };
    p1.add(cbx);
    p1.add(btn);
    JFrame f = new JFrame();
    f.getContentPane().add(p);
    f.getContentPane().add(p1,BorderLayout.SOUTH);
    f.setSize(400,300);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
    btn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        counter = (counter+1) % months.length;
        p.repaint();
      }
    });
  }
  public static void main(String[] args)
  {
    SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        new Testing().buildGUI();
      }
    });
  }
}

[naved momin]

Michael Dunn wrote:> still the out come is not desired , facing same problem ,

if it's still blurred, you must be calling displayTextOnImage() directly, elsewhere.

just to make sure we're talking about them same thing, run this, click 'next' a couple of times,
then check the 'clear' checkbox and click 'next' a few more times.
the text will get increasingly more blurred until the checkbox is checked, then will be clear,
until checkbox is unchecked.

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class Testing
{
  String[] months = new java.text.DateFormatSymbols().getMonths();
  int counter;
  JPanel p;
  JPanel p1 = new JPanel();
  JCheckBox cbx = new JCheckBox("Clear");
  JButton btn = new JButton("Next");
  public void buildGUI()
  {
    p = new JPanel(){
      @Override
      protected void paintComponent(Graphics g)
      {
        if(cbx.isSelected()) super.paintComponent(g);
        g.drawString(months[counter],50,50);
      }
    };
    p1.add(cbx);
    p1.add(btn);
    JFrame f = new JFrame();
    f.getContentPane().add(p);
    f.getContentPane().add(p1,BorderLayout.SOUTH);
    f.setSize(400,300);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
    btn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        counter = (counter+1) % months.length;
        p.repaint();
      }
    });
  }
  public static void main(String[] args)
  {
    SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        new Testing().buildGUI();
      }
    });
  }
}

I guess this is where you are getting it all wrong or I have not get what you are saying
what you are doing is painting the surface of a panel
whereas
i m painting the image which is on label which in turn is on panel , so i guess instead of repaint image or panel we should repaint label with different image which contain different text...

[naved momin]

Michael Dunn wrote:> still the out come is not desired , facing same problem ,

if it's still blurred, you must be calling displayTextOnImage() directly, elsewhere.

just to make sure we're talking about them same thing, run this, click 'next' a couple of times,
then check the 'clear' checkbox and click 'next' a few more times.
the text will get increasingly more blurred until the checkbox is checked, then will be clear,
until checkbox is unchecked.

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class Testing
{
  String[] months = new java.text.DateFormatSymbols().getMonths();
  int counter;
  JPanel p;
  JPanel p1 = new JPanel();
  JCheckBox cbx = new JCheckBox("Clear");
  JButton btn = new JButton("Next");
  public void buildGUI()
  {
    p = new JPanel(){
      @Override
      protected void paintComponent(Graphics g)
      {
        if(cbx.isSelected()) super.paintComponent(g);
        g.drawString(months[counter],50,50);
      }
    };
    p1.add(cbx);
    p1.add(btn);
    JFrame f = new JFrame();
    f.getContentPane().add(p);
    f.getContentPane().add(p1,BorderLayout.SOUTH);
    f.setSize(400,300);
    f.setLocationRelativeTo(null);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
    btn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        counter = (counter+1) % months.length;
        p.repaint();
      }
    });
  }
  public static void main(String[] args)
  {
    SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        new Testing().buildGUI();
      }
    });
  }
}

viola ! we have done it , I was correct instead of painting component we should repaint image and reload it in jlabel , if you have not putted this above code then i would never realize what you were thinking .....thanks buddy .....
we have done it .....:)