touchgfx::ScrollableContainer::doScroll() method

@fn virtual bool ScrollableContainer::doScroll(int16_t deltaX, int16_t deltaY); Method to actually scroll the container. Method to actually scroll the container. Passing negative values will scroll the items in the ScrollableContainer up / left, whereas positive values will scroll items down / right. If the distance is larger than allowed, the deltas are adjusted down to make sure the contained items stay inside view.