void (final Graphics g) { if (getParent() == null) return; int gap = JBUIScale.scale(2); int center = JBUIScale.scale(3); g.setColor(JBUI.CurrentTheme.CustomFrameDecorations.separatorForeground()); int y2 = getHeight() - gap * 2; LinePainter2D.paint((Graphics2D)g, center, gap, center, y2); }