public void showOffsetPopup(MouseEvent e, Rectangle keepVisibleArea, boolean forceShow) {
		if (forceShow || DockingUtils.isTipWindowEnabled()) {
			PopupSource popupSource = new PopupSource(e, keepVisibleArea);
			doShowPopup(popupSource);
		}
	}
Sets the object that decides where to place the popup window. 
@param popupWindowPlacer the placer
Ghidra/Framework/Docking/src/main/java/docking/widgets/PopupWindow.java