How to use

getScreenArea

method

in

jsettlers.common.action.ScreenChangeAction

case SCREEN_CHANGE:
  ScreenChangeAction screenAction = (ScreenChangeAction) action;
  controls.setMapViewport(screenAction.getScreenArea());
  break;
case ZOOM_IN:

constructionMarksCalculator.setScreen(((ScreenChangeAction) action).getScreenArea());
break;