Is there any way to fit an image in a tab componen

问题:

I'm adding icons to tabs but i want the ImageIcon fits all the tabComponent.

I tried this code

ImageIcon icon = new ImageIcon("images/itemtexto-off.png");
Image img = icon.getImage() ;  
Image newimg = img.getScaledInstance( 50, 25,  java.awt.Image.SCALE_DEFAULT ) ;  
icon = new ImageIcon( newimg );
tabbedPaneProductDetail.setIconAt(0, icon);

Also i tried this as a solution but not worked.

JLabel label = new JLabel(icon);
label.setBackground(Color.BLUE);
tabbedPaneProductDetail.setTabComponentAt(1,label);

回答1:

You can try playing with the UIManager. Add the following at the start of your program before you start creating component:

UIManager.put("TabbedPane.tabInsets", new Insets(0, 0, 0, 0));

Of course not all LAF's may support this option. See UIManager Defaults for more information.

回答2:

I found a solution, i don't know if it's the proper one, thanks to @camickr

tabbedPane.setUI(new SynthTabbedPaneUI(){

Insets insets =new Insets(0, 0, 0, 0);

@Override
protected Insets getTabInsets(int tabPlacement,
                  int tabIndex){
                  return insets;
}

});

UPDATE

I found another solution setting this property

UIManager.getLookAndFeelDefaults().put("TabbedPane:TabbedPaneTab.contentMargins",  new Insets(0, 0, 0, 0));