     
     var kHeightOfTopScrollView:CGFloat = 50
     
+    var kMinimumWormHeightRatio:CGFloat = 4/5
     
     /**********************
      paddings

        let tap:UIGestureRecognizer = sender as! UIGestureRecognizer
        let tab:WormTabStripButton = tap.view as! WormTabStripButton
        
        currentTabIndex = tab.index!
        natruallySlideWormToPosition(tab: tab)
        natruallySlideContentScrollViewToPosition(index: tab.index!)
        adjustTopScrollViewsContentOffsetX(tab: tab)

    
    private let worm:UIView = UIView()
    
    public var eyStyle:WormTabStripStylePropertyies = WormTabStripStylePropertyies()
    
    //delegate
    weak var delegate:WormTabStripDelegate?
