How to use

ScreenChangeAction

in

jsettlers.common.action

private void adaptScreenSize() {
  FloatRectangle newScreen = context.getScreen().getPosition();
  if (!newScreen.equals(oldScreen)) {
    getInterfaceConnector().fireAction(new ScreenChangeAction(context.getScreenArea()));
  }
  oldScreen = newScreen;
}

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

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