Extending DefaultTreeCellRenderer, Jlabel setOpaque(false) no effect

Hi, im using the code below, but my JLabel component.setOpaque(false) is having no effect, is this possible?
private class MyRenderer extends DefaultTreeCellRenderer {
            ImageIcon tabIconOnline, tabIconOffline;
            String status;
            public MyRenderer() {
            public Component getTreeCellRendererComponent(
                    JTree tree,
                    Object value,
                    boolean sel,
                    boolean expanded,
                    boolean leaf,
                    int row,
                    boolean hasFocus) {
                JLabel jl = (JLabel)super.getTreeCellRendererComponent(
                        tree, value, sel,
                        expanded, leaf, row,
                        hasFocus);
                                 jl.setOpaque(false); // not working
                setOpaque(false); // not working
                tree.setOpaque(false); // not working
                                 setBackgroundSelectionColor(MyGUI.ITEM_SELECTION_COLOUR);
                setBackgroundNonSelectionColor(null); // not working
                setBorderSelectionColor(new Color(10, 10, 255));
                return jl;
    }

heres the full code, im using:
        private class MyRenderer extends DefaultTreeCellRenderer {
            ImageIcon tabIconOnline, tabIconOffline;
            String status;
            public MyRenderer() {
            public Component getTreeCellRendererComponent(
                    JTree tree,
                    Object value,
                    boolean sel,
                    boolean expanded,
                    boolean leaf,
                    int row,
                    boolean hasFocus) {
                JLabel jl = (JLabel)super.getTreeCellRendererComponent(
                        tree, value, sel,
                        expanded, leaf, row,
                        hasFocus);
                DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
                //jl.setOpaque(false);
               // setOpaque(false);
                tree.setOpaque(false);
                if (node == rootNode) {
                    setForeground(new Color(255, 255, 255));
                } else if ((node == nodeFriends) ||(node == nodeRecent)||(node == nodeIgnored)) {
                    if (leaf) {
                        setIcon(createImageIcon("images/icon_noChildren.gif"));
                    setForeground(new Color(255, 255, 255));
                    setToolTipText("To add a Friend , Right click then 'Add A Friend'");
                } else if (node.getParent() == nodeFriends) {
                    Friend friend = (Friend)(node.getUserObject());
                    if (friend.getStatus().equals("online")) {
                        setForeground(new Color(255, 255, 255));
                        setIcon(createImageIcon("images/icon_online.gif"));
                        setToolTipText("Is " + friend.getStatus());
                    } else {
                        setIcon(createImageIcon("images/icon_offline.gif"));
                        setToolTipText("Is " + friend.getStatus());
                        setForeground(new Color(255, 255, 255));
                } else if (node.getParent() == nodeRecent) {
                    setForeground(new Color(255, 255, 255));
                } else if (node.getParent() == nodeIgnored) {
                    setForeground(new Color(255, 255, 255));
                    setToolTipText("You are ignoring this user");
                if (sel) {
                    setForeground(Color.black);
                //jl.setBackground(null);
                setBackgroundSelectionColor(MyGUI.ITEM_SELECTION_COLOUR);
                //setBackgroundNonSelectionColor(null);
                setBorderSelectionColor(new Color(10, 10, 255));
                return jl;
    }

Similar Messages

Extending DefaultTreeCellRenderer, setOpaque has no effect

Hello
I'm building a JTree and want the tree and all its nodes to not be opaque, i.e. when I have a background image, the image should be visible.
When I have searched the forum for this subject I came across another thread with some suggestions on the DefaultTreeCellRenderer but the suggestions did not seem to work for the guy who made the post.
The code below works somewhat, i.e. the tree is clear and the selected nodes/leafs are clear but not the nonselected nodes/leafs.
public class PrefsTreeCellRenderer extends DefaultTreeCellRenderer {
public PrefsTreeCellRenderer() {
    super();
} /* PrefsTreeCellRenderer */
public Component getTreeCellRendererComponent(JTree tree, Object value,
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} /* getTreeCellRendererComponent */
} /* PrefsTreeCellRenderer */I'd appreciate any suggestions on this.
aqd

this.setBackgroundNonSelectionColor(new Color(0,0,0,0));

How to make a JPanel transparent? Not able to do it with setOpaque(false)

Hi all,
I am writing a code to play a video and then draw some lines on the video. For that first I am playing the video on a visual component and I am trying to overlap a JPanel for drawing the lines. I am able to overlap the JPanel but I am not able to make it transparent. So I am able to draw lines but not able to see the video. So, I want to make the JPanel transparent so that I can see the video also... I am posting my code below
import javax.media.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import java.lang.Math;
import javax.media.control.FramePositioningControl;
import javax.media.protocol.*;
import javax.swing.*;
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     String currentDirectory;
     int mediatime;
     BufferedWriter out;
     FileWriter fos;
     String filename = "";
     Object waitSync = new Object();
     boolean stateTransitionOK = true;
     JButton bn = new JButton("DrawLine");
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                     player.close ();
                     System.exit (0);
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          MenuItem mi = new MenuItem ("Open...");
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          mb.add (m);
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                    fd.show ();
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                         System.out.println(exe);
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               pack ();
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     int i=0,j;
     public int xc[]= new int[100];
     public int yc[]= new int[100];
     int a,b,c,d;
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          this.add(bn);
          bn.addActionListener(actionListener);
          setBackground(Color.CYAN);
          addMouseListener(new MouseAdapter()
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          public void actionPerformed(ActionEvent aae)
                    repaint();
     public void saveCoordinates(int x, int y)
                System.out.println("x-coordinate="+x);
                System.out.println("y-coordinate="+y);
                xc=x;
          yc[i]=y;
          System.out.println("i="+i);
          i=i+1;
     public Dimension getPreferredSize()
return new Dimension(500,500);
     public void paintComponent(Graphics g)
super.paintComponent(g);
          Graphics2D g2D = (Graphics2D)g;
          //g2D.setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR, 0.0f));
          g2D.setColor(Color.GREEN);
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               g2D.drawLine(xc[j],yc[j],xc[j+1],yc[j+1]);

camickr wrote:
"How to Use Layered Panes"
http://java.sun.com/docs/books/tutorial/uiswing/components/layeredpane.html
Add your video component to one layer and your non-opaque panel to another layer.Did you try that with JMF? It does not work for me. As I said, the movie seems to draw itself always on top!

Why does setOpaque(false) on Mac interfere with functionality of JSlider?

Hello, here is an SSCCE with a slider that works normally on my PC:
import javax.swing.*;
public class Foobar extends JApplet
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}But on my sister's Mac, the slider functionality is broken: one cannot drag the thumb with the mouse. To move the thumb, she has to click on the rail. If I comment out the setOpaque(false) call, then everything works fine.
I need that setOpaque call and I want the program to work both on Mac and PC. Why does it break on the Mac and how to fix it? Thank you for your insight. Mark

So then you haven't actually ran that SSCCE on a MAC then? No, no, she ran it on her Mac, my sis. I asked her to run it several times, and she definitely cannot move the thumb. Now, if I comment out the setOpaque(false), then she can move it all right.
But, I found a workaround. I did not realize that before, that Apple actually does include the "cross-platform" look and feel, not only their own Aqua. On the Sun website, it sort of implies that Apple only has Aqua, but on Apple website, I found they also support the cross-platform look.
And voila, I changed to the cross-platform, and now, everything works. Not only the sliders in non-opaque panels, but I had also a HUGE number of other problems getting my app to work on the Mac, and now, with the cross-platform look, they all disappeared!!
Thank you.
Mark

JPanel setOpaque(false) isn't transparent ?

Hi,
I've set a JPanel as the only thing added to a JFrame container. I've set a picture to this JPanel by using the following code
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               public void paintComponent(Graphics g)
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                    setOpaque( false );
                    super.paintComponent(g);
          };Now I've added another JPanel onto this one. I've set its background to RED, so there is a red square over my picture on my JFrame. However I want this JPanel to be fully transparent, so you can't actually see it at all, so the picture behind it on the original JPanel shows through.
But when I use setOpaque(false), I just get a gray square instead of a red one, it doesn't show anything through at all.
Anyone know why this would be ?
Thanks

Here you go, the background picture is not shining through. You'll have to change the jpg name to whatever you want to use.
Thanks
import javax.swing.*;
import java.awt.*;
import javax.swing.border.*;
public class OneToOneChat extends JFrame
     protected JPanel leftZone, rightZone, totalZone;
     protected JTextPane bottomLeftZone, topLeftZone;
     protected JScrollPane topScroll, bottomScroll;
     public static void main(String args[])
          new OneToOneChat();
     public OneToOneChat()
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          setTitle("My Opaque Problem");
          setLocation(200,200);
          setResizable(false);
          Container con = getContentPane();
          leftZone = new JPanel(new BorderLayout());
          rightZone = new JPanel(new BorderLayout());
          totalZone = new JPanel(new BorderLayout());
          topLeftZone = new JTextPane();
          bottomLeftZone = new JTextPane();
          topScroll = new JScrollPane(topLeftZone, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                                                 JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
                topScroll.setPreferredSize(new Dimension(250,150));
          bottomScroll = new JScrollPane(bottomLeftZone,
                                       JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                                       JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
          bottomScroll.setPreferredSize(new Dimension(250,150));
          rightZone.setOpaque(false);
          rightZone.setBackground(Color.RED);
          rightZone.setBorder( new LineBorder(Color.GREEN) );
          rightZone.setPreferredSize(new Dimension(250,300));
          leftZone.add(topScroll, "North");
          leftZone.add(bottomScroll,"South");
          totalZone.add(leftZone,"West");
          totalZone.add(rightZone,"East");
          final ImageIcon icon = new ImageIcon("ripple.jpg");
          JPanel temp = new JPanel()
               public void paintComponent(Graphics g)
                    Dimension d = getSize();
                    g.drawImage(icon.getImage(), 0, 0, d.width, d.height, null);
                    setOpaque( false );
                    super.paintComponent(g);
          temp.setBorder(new EmptyBorder(8,8,8,8));
          temp.add(totalZone);
          con.add(temp);
          pack();
          setVisible(true);
}

JPopupMenu ignores setOpaque(false) near screen edges

Dear group
I try to paint a custom JPopupMenu with transparency, but this is ignored when the popup is opened so it overlaps near screen edges (bottom and right side). This is also the case if the popup overlaps the Microsoft Windows toolbar at the bottom.
I may be able to emulate JPopupMenus using custom components in a JLayeredPane, but can anyone explain the above behaviour?
Thanks and Best Regards,
Aksel, Denmark
Environment: j2sdk-se 1.6.0_10 and windows xp
Example:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPopupMenu;
public class TransparencyPopupNearBorderTest {
public static void main(String[] args) {
final JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
frame.setBounds(new Rectangle(screenSize));
frame.setUndecorated(true);
frame.setPreferredSize(screenSize);
frame.addMouseListener(new MouseAdapter() {
@Override
public void mouseReleased(MouseEvent e) {
JPopupMenu popup = new JPopupMenu();
popup.setOpaque(false);
JLabel label = new JLabel("TRANSPARENT");
label.setFont(new Font("Helvetica", Font.PLAIN, 42));
popup.add(label);
popup.setLightWeightPopupEnabled(false);
popup.show(frame, e.getX(), e.getY());
frame.getContentPane().setBackground(Color.BLUE);
frame.pack();
frame.setVisible(true);
}

Don't forget to use the Code Formatting Tags so the posted code retains its original formatting. That is done by selecting the code and then clicking on the "Code" button above the question input area.
I don't know if transparency painting has changed in 1.6.0_10. Prior to that I believe transparency can only be achieved in lightweight components (ie. Swing does all the painting). JFrame, JWindow and JDialog are not lightweight because they use OS components.
In the case of a popup, it is lightweight when entirely contained within its parent frame. But a lightweight popup can not be painted outside the bounds of the frame so a JWindow (I believe) is used as the popup, which can't be transparent.

Defining different icons for TreeNode by extending DefaultTreeCellRenderer

Hello all,
I'm using a JTree to display project, folder and files. I'd like to have different icons for open project, close project, open folder, close folders, and files
but i got for the root which is a project object a folder icon and for folder when it is not expanded i got project icon and the when i expand it i got a folder icon, can someone help me please
Here is my code :
public class MyTreeCellRenderer extends DefaultTreeCellRenderer {
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                         openIcon = null;
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                         openIcon = folderOpenIcon;
                         this.setOpenIcon(openIcon);
                         openIcon = null;
          if(closeIcon == null) {
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               if(closeIcon != null) {
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                         closeIcon = projectCloseIcon;
                         this.setClosedIcon(closeIcon);
                         closeIcon = null;
                    } else if(obj instanceof LFolder) {
                         closeIcon = folderCloseIcon;
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}Thank you.

Hi all,
I changed my code a bit knowing that the renderer is global to the tree so my (openIcon == null) is called only once for the first node.
Here is my new code :
public class MyTreeCellRenderer extends DefaultTreeCellRenderer {
     private Icon projectOpenIcon = new ImageIcon("icons/book_open.png");
     private Icon projectCloseIcon = new ImageIcon("icons/book_blue.png");
     private Icon folderOpenIcon = new ImageIcon("icons/folder.png");
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               this.setIcon(fileIcon);
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Can 3D work from photoshop extended cs5 be transferred into after effects cs4?

Can 3D work from photoshop extended cs5 be transferred into after effects cs4? please help

Why would you post this in the "Photoshop Elements" forum...?
Try here; http://forums.adobe.com/community/aftereffects_general_discussion
or here; http://forums.adobe.com/community/photoshop

SetOpaque(false) doesn't work

Hi,
I'm looking for help to have background transparent panels. I tried to use JPanel with setOpaque(false), but I still have a lightGrey background ! Is it normal ??? I don't think so. Could anyone help me please...

Thanks for your answers.
I get rid of JComponent, I prefer not to use Swing for my application.
So I will ask another question. I still want transparent panels and labels but in AWT. I found code to make them transparent, but when I draw an image on the last panel (in the background), I have the trace of the panels and labels which are above, and their backgrounds have the same color than the panel on which I draw my image.
I DON'T UNDERSTAND !!!
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An idea ?
Excuse my English, I'm French. :0�

SetOpaque(false);

Hello:
I have got your code on how to set a background image. Thank you so much.
But I have another question , my question is that
what is the purpose of the following method
setOpaque(false);
and also this method belongs to which class?

DON'T CREATE A NEW THREAD EACH TIME YOU REPLY.
THE REPLY BUTTON IS LOCATED AT THE UPPER RIGHT CORNER.
REPLY TO THIS THREAD.
http://forum.java.sun.com/thread.jspa?threadID=5223082&tstart=0

"Urgent---Any Light will be appreciated"

Dear All,
I am having a terrible problem. If anyone can help with any light in this topic I would be grateful. The application I am developing has two windows. What I meant is when I start two windows comes togather. The 2nd window basically is a viewer. From the first windows's menu I can say "Import Image" and that image is displayed in the 2nd window. I have the ability to rotate the image and then draw a rectangle in the image. Once I draw the rectangle it feeds some data in the first windows table.
Here is the problem: When I draw the image and then rotate the image 90 degree the rectangle also moves. I don't want that. I want to do something so even if I rotate the image 100 times still the rectangle should stay in the area where I have drawn that.
If you can tell me how to do this or if you can tell me where should I research about it would be great.
Thanks

Or if u so wish,
1. Try creating an icon of the rectangle,
2. Place this icon into a JLabel and
3. Have the JLabel placed on top of the image
b. set the JLabel.setOpaque(false)
Just another idea. Whaddaya think?
Reformer!

Set property for background color for JButton

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import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.geom.Line2D;
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import javax.swing.ImageIcon;
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    public boolean o=false;
    public Oval Oval;
    public boolean l=false;
    public Line2D Line;
    public boolean i=false;
    public Icon Icon;
    public JLabel label;
    public int idNum;
}Edited by: ghostbust555 on Feb 12, 2010 2:14 PM

ghostbust555 wrote:
Well see the problem is i have an array of 200 objects.What does that have to do with anything? And if it does, why isn't it in the code you posted?
I dont understand what you mean in your "Edit..." part. could you show some code/ explain farther? sorry if its a dumb question I'm still a bit of a novice at java.Yeah.
object yuck = (object) e.getComponent(); // That's a cast.
boolean yucksR = yuck.r; // Get the "r" variable from the object.

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