Function SetInterval

micropolis-activity/src/sim/w_inter.c:1509–1548

(intervalPtr, min, max, notify)

      lastmin = min; lastmax = max;
      min += delta; max += delta;
      if ((max - min) != intervalPtr->trackWidth) { /* squished */
	if (lastmin == intervalPtr->fromValue) {
	  min = max - intervalPtr->trackWidth;
	} else if (lastmax == intervalPtr->toValue) {
	  max = min + intervalPtr->trackWidth;
	}
      }
      break;
    }

    SetInterval(intervalPtr, min, max, 1);
}


static void
SetInterval(intervalPtr, min, max, notify)
    register Interval *intervalPtr;	/* Info about widget. */
    int min, max, notify;
{
    if (min > max) {
      int temp = min;
      min = max;
      max = temp;
    }

    if ((min < intervalPtr->fromValue)
	    ^ (intervalPtr->toValue < intervalPtr->fromValue)) {
	min = intervalPtr->fromValue;
    }
    if ((min > intervalPtr->toValue)
	    ^ (intervalPtr->toValue < intervalPtr->fromValue)) {
	min = intervalPtr->toValue;
    }
    if ((max < intervalPtr->fromValue)
	    ^ (intervalPtr->toValue < intervalPtr->fromValue)) {
	max = intervalPtr->fromValue;
    }
    if ((max > intervalPtr->toValue)
	    ^ (intervalPtr->toValue < intervalPtr->fromValue)) {
	max = intervalPtr->toValue;
    }

    if ((min == intervalPtr->minValue) &&