Paul,
I looked at BasicTabbedPaneUI code and it seems that the tab
background color is the background color of the tab pane.
So if you just set tab pane background color to any color any
runtime, tab should get painted with that color.
- peter
--- "Song, Mingjian" <[EMAIL PROTECTED]> wrote:
> Here is my solution:
>
> 1. Customize a UI for the tabbed pane. Subclass
> javax.swing.plaf.basic.
> BasicTabbedPaneUI and override its paintTabBackground method.
>
> --------------------------------------------------------------------
>
> import javax.swing.plaf.basic.BasicTabbedPaneUI;
> import javax.swing.UIManager;
> import java.awt.*;
>
> public class MyTabbedPaneUI extends BasicTabbedPaneUI
> {
> // default color is decided by the Default UI.
> Color selectedTabBgColor =
> UIManager.getColor("TabbedPane.lightHighlight");
> Insets contentBorderInsets = new Insets(1, 0, 0, 0);
>
> public MyTabbedPaneUI(Color color){
> selectedTabBgColor = color;
> }
>
> public void setSelectedTabBgColor(Color color){
> selectedTabBgColor = color;
> }
>
> // Overriding method. defines the offset from the top of the
> // tabbed pane to the component it contains.
> protected Insets getContentBorderInsets(int tabPlacement) {
> return contentBorderInsets;
> }
>
> // Overriding method. paints the background of the tabs.
> protected void paintTabBackground(Graphics g, int tabPlacement,
> int tabIndex,
> int x, int y, int w, int h,
> boolean isSelected ) {
> g.setColor(tabPane.getBackgroundAt(tabIndex));
> // these two lines are all that makes this method
> // different from the paintTabBackground() in
> // BasicTabbedPaneUI. we want to force the background
> // color of the tab to be selectedTabBgColor, not
> // the default one from the tabbed pane. (light gray)
> if(isSelected)
> g.setColor(selectedTabBgColor);
>
> switch(tabPlacement) {
> case LEFT:
> g.fillRect(x+1, y+1, w-2, h-3);
> break;
> case RIGHT:
> g.fillRect(x, y+1, w-2, h-3);
> break;
> case BOTTOM:
> g.fillRect(x+1, y, w-3, h-1);
> break;
> case TOP:
> default:
> g.fillRect(x+1, y+1, w-3, h-1);
> }
> }
> }
>
> ---------------------------------------------------------------------
> 2. Install the UI to your tabbedPane.
>
> tabPane.setUI(new MyTabbedPaneUI(myInitialColor));
>
> ---------------------------------------------------------------------
> 3. You can change the color of the tab at run time by:
>
>
((MyTabbedPaneUI)tabPane.getUI()).setSelectedTabBgColor(newBackgroundColor);
>
>
> ---------------------------------------------------------------------
>
>
> I may have copied this code from somewhere else. So I can not take
> credit for it. Anyway, hope this helps.
>
>
> Mingjian Song
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> paul
> > beckett (JIC)
> > Sent: Thursday, September 05, 2002 12:39 PM
> > To: '[EMAIL PROTECTED]'
> > Subject: Altering the color of the selected tab (JTabbedPane)
> > at runtime
> > Importance: High
> >
> >
> > How can I alter the color of the selected tab in a
> > JTabbedPane at runtime.
> > The following works if done before the creation of the
> > JTabbedPane, but I need to be able to configure the colour
> > scheme later.
> >
> > UIManager.put("TabbedPane.selected", Color.black);
> >
> > Cheers,
> >
> > Paul
> > _______________________________________________
> > Swing mailing list
> > [EMAIL PROTECTED]
> > http://eos.dk/mailman/listinfo/swing
> >
> _______________________________________________
> Swing mailing list
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