Code
class TransparentTreeCellRenderer extends DefaultTreeCellRenderer {
@Override public Component getTreeCellRendererComponent(
JTree tree, Object value, boolean isSelected, boolean expanded,
boolean leaf, int row, boolean hasFocus) {
JComponent c = (JComponent) super.getTreeCellRendererComponent(
tree, value, isSelected, expanded, leaf, row, hasFocus);
c.setOpaque(false);
return c;
}
private final Color ALPHA_OF_ZERO = new Color(0, true);
@Override public Color getBackgroundNonSelectionColor() {
return ALPHA_OF_ZERO;
}
@Override public Color getBackgroundSelectionColor() {
return ALPHA_OF_ZERO;
}
}
class TranslucentTreeCellRenderer extends TransparentTreeCellRenderer {
private final Color backgroundSelectionColor = new Color(100, 100, 255, 100);
@Override public Color getBackgroundSelectionColor() {
return backgroundSelectionColor;
}
}
References
