Method scrollRatio

source/windowing/StarScrollArea.cpp:168–182

}

float ScrollBar::scrollRatio() const {
  if (m_parent) {
    auto scrollArea = convert<ScrollArea>(m_parent);
    if (m_direction == GuiDirection::Vertical) {
      if (scrollArea->maxScrollPosition()[1] == 0)
        return 0;
      return scrollArea->scrollOffset()[1] / (float)(scrollArea->maxScrollPosition()[1]);
    } else {
      if (scrollArea->maxScrollPosition()[0] == 0)
        return 0;
      return scrollArea->scrollOffset()[0] / (float)(scrollArea->maxScrollPosition()[0]);
    }
  }
  return 0;
}

ButtonWidgetPtr ScrollBar::forwardButton() const {
  return m_forward;