Sometimes applet doesn't draw some JPanel elements

[Serhiy Boychenko]

Hello people,
I have some problem with my code where I'm not able to discover where is the problem.
I have JLabel with an image and JTextField with background image, sometimes window is correctly drawn, sometimes it only draws Text Field.
Anybody can help me with finding problem?

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.image.BufferedImage;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JApplet;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class Test extends JApplet {
private BufferedImage img;
private BufferedImage img2;
public void init ()
{
this.load_Media ();
this.init_GUI();
this.init_LoginGUI(true);
}
private void init_GUI ()
{
this.getContentPane().setLayout(null);
setVisible(true);
this.setSize(680, 520);
}
private void init_LoginGUI (boolean display_panel)
{
LoginWindow login_window = new LoginWindow(img, img2);
Rectangle login_window_bounds = new Rectangle(0,0,680,520);
login_window.setBounds(login_window_bounds);
login_window.setVisible(true);
this.getContentPane().add(login_window, null);
}
private void load_Media ()
{
MediaTracker tracker = new MediaTracker(this);
Image tmp = getImage (getCodeBase(), "test.png");
tracker.addImage(tmp, 0);
try{
tracker.waitForID(0);
}
catch(Exception e)
{
e.printStackTrace();
}
this.img = this.imageToBufferedImage(tmp);
tmp = getImage (getCodeBase(), "test2.PNG");
tracker.addImage(tmp, 1);
try{
tracker.waitForID(1);
}
catch(Exception e)
{
e.printStackTrace();
}
this.img2 = this.imageToBufferedImage(tmp);
}
public BufferedImage imageToBufferedImage(Image im)
{
BufferedImage bi = new BufferedImage(im.getWidth(null),im.getHeight(null),BufferedImage.TYPE_INT_RGB);
Graphics bg = bi.getGraphics();
bg.drawImage(im, 0, 0, null);
bg.dispose();
return bi;
}
}
class LoginWindow extends JPanel
{
private BufferedImage img;
private BufferedImage img2;
public LoginWindow (BufferedImage img, BufferedImage img2)
{
setDoubleBuffered(true);
this.img = img;
this.img2 = img2;
this.setLayout(null);
ImageIcon imageIcon = new ImageIcon(img);
JTextField l = new LoginTextField(imageIcon);
l.setLocation(160, 174);
l.setSize(100, 25);
l.setOpaque(false);
this.add(l);
imageIcon = new ImageIcon(img2);
JLabel j = new JLabel(imageIcon);
j.setLocation(0, 0);
j.setSize(680, 520);
j.setVisible(true);
this.add(j);
}
}
class LoginTextField extends JTextField {
private Image i;
private BufferedImage i2;
public LoginTextField (ImageIcon icon)
{
i = icon.getImage();
i2 = this.imageToBufferedImage(i);
Color c = new Color(255, 0, 255);
i2 = this.makeColorTransparent(i2, c);
Insets noInsets=new Insets(2, 4, 0, 4);
setMargin(noInsets);
setBorder(BorderFactory.createEmptyBorder(3,3,3,3));
setOpaque(false);
Dimension size = new Dimension( + 100, 25);
setSize(size);
}
protected void paintComponent(Graphics g)
{
g.drawImage(i2, 0, 0, this);
super.paintComponent(g);
}
public BufferedImage imageToBufferedImage(Image im)
{
BufferedImage bi = new BufferedImage(im.getWidth(null),im.getHeight(null),BufferedImage.TYPE_INT_RGB);
Graphics bg = bi.getGraphics();
bg.drawImage(im, 0, 0, null);
bg.dispose();
return bi;
}
public BufferedImage makeColorTransparent(BufferedImage image, Color color)
{
//BufferedImage image = loadImage(ref);
BufferedImage dimg = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D g = dimg.createGraphics();
g.setComposite(AlphaComposite.Src);
g.drawImage(image, null, 0, 0);
g.dispose();
for(int i = 0; i < dimg.getHeight(); i++)
{
for(int j = 0; j < dimg.getWidth(); j++)
{
if(dimg.getRGB(j, i) == color.getRGB())
{
dimg.setRGB(j, i, 0x8F1C1C);
}
}
}
return dimg;
}
}

Thanks for any help!

[Campbell Ritchie]

Cannot run your application because there were some unsatisfied dependencies.
Please look at this FAQ especially the webpage about SSCCEs.

[Campbell Ritchie]

And welcome to JavaRanch

[Serhiy Boychenko]

 

Campbell Ritchie wrote:Cannot run your application because there were some unsatisfied dependencies.
Please look at this FAQ especially the webpage about SSCCEs.

This is probably because 2 images missing, if it's possible I'll attach.

test.png is an image for JTextField's background(I'm not able to attach this one, because of limits)
test2.png is an image for JLabel background..

I tried to run it and it runs on ym pc..

And thank you for help and welcome ;)

[Michael Dunn]

was the problem resolved here?

http://forums.sun.com/thread.jspa?threadID=5406265&tstart=0

[Maneesh Godbole]

Thanks Michael.

Serhiy,
Please read this

[Serhiy Boychenko]

No the problem still persists.

I have read carefully, next time I'll keep in mind.
Sorry if I'm breaking the main rule, I'll try not to do so.

Basicly I have tried to run the program in my firend's MAC and all elements are cortrectly displayed, but on my PC they are not.. Probably the problem consists in JVM or JDK I'm using on my machine.

[Serhiy Boychenko]

I think I finally manged to solve problem...

The trick is adding

super.repaint();

line of code in each function

paintComponent(Grapahics g)

Thanks everyone who tried to help!!!

[Michael Dunn]

> Sorry if I'm breaking the main rule, I'll try not to do so.

It's not really a rule, you're free to post wherever you like.

Just remember that many regulars here are also regulars on other sites,
and posts from known cross-posters are generally ignored, even if the
problem has a simple solution.

[Serhiy Boychenko]

 

Michael Dunn wrote:> Sorry if I'm breaking the main rule, I'll try not to do so.

It's not really a rule, you're free to post wherever you like.

Just remember that many regulars here are also regulars on other sites,
and posts from known cross-posters are generally ignored, even if the
problem has a simple solution.

I hope I will not get tagged ;)
It's a nice lesson for next time asking questions.

[Rob Spoor]

 

Serhiy Boychenko wrote:I think I finally manged to solve problem...

The trick is adding

super.repaint();

line of code in each function

paintComponent(Grapahics g)

That shouldn't be necessary. In fact, if you call super.repaint() from paintComponent, you will cause infinite repainting (or probably a StackOverFlowError). repaint(), through some steps, calls paintComponent, which again calls repaint(), etc.

[Rob Camick]

 

That shouldn't be necessary. In fact, if you call super.repaint() from paintComponent, you will cause infinite repainting

Which has already beeen suggested along with other suggestions in the other posting, which is why I continue to ignore this posting since the OP doesn't bother to update it when suggestions are made.

[Serhiy Boychenko]

I have already figured that... Thanks anyways.

The solution is in this peace of code, just fr future reference if someone will need:

public void init () {
this.load_Media ();
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
this.init_GUI();
this.init_LoginGUI(true);
repaint();
}
}
}

And sorry again for multi posting... This is a good lesson I have passed and wil not repeat.

Thanks everyone who tried to help and helped me to integrate in CodeRanch community ;)