FWPopupMenuAnimationStyle

NS_ENUM(NSInteger,FWPopupMenuAnimationStyle) {
    FWPopupMenuAnimationStyleScale = 0,       //scale动画 Default
    FWPopupMenuAnimationStyleFade,            //alpha 0~1
    FWPopupMenuAnimationStyleNone,            //没有动画
    FWPopupMenuAnimationStyleCustom           //自定义
}