private int getSideComponentWidth() {
        GridBagLayout layout = (GridBagLayout)getLayout();
        Component sideComponent = null;
        GridBagConstraints sideComponentConstraints = null;
        boolean unsupportedLayout = false;
        for (Component component : getComponents()) {
          GridBagConstraints c = layout.getConstraints(component);
          if (c.gridx > 0) {
            if (sideComponent == null && c.gridy == 0) {
              sideComponent = component;
              sideComponentConstraints = c;
            }
            else {
              unsupportedLayout = true;
            }
          }
        }
        if (unsupportedLayout) {
          Logger.getInstance(LineTooltipRenderer.class).error("Unsupported tooltip layout");
        }
        if (sideComponent == null) {
          return 0;
        }
        else {
          Insets insets = sideComponentConstraints.insets;
          return sideComponent.getPreferredSize().width + (insets == null ? 0 : insets.left + insets.right);
        }
      }
private int getSideComponentWidth()