 class VHomeControlCameraMenu:UIView
 {
     private weak var controller:CHome!
+    private weak var buttonTrigger:VHomeControlCameraMenuTrigger!
+    private weak var layoutButtonTriggerLeft:NSLayoutConstraint!
     private let kBackgroundHeight:CGFloat = 50
     private let kButtonBackWidth:CGFloat = 60
+    private let kButtonTriggerSize:CGFloat = 72
     
     convenience init(controller:CHome)
     {

            view:buttonBack,
            constant:kButtonBackWidth)
        
        addConstraints([
            layoutBackgroundHeight,
            layoutBackgroundBottom,

            layoutButtonBackTop,
            layoutButtonBackBottom,
            layoutButtonBackLeft,
            layoutButtonBackWidth,
            layoutButtonTriggerTop,
            layoutButtonTriggerLeft,
            layoutButtonTriggerWidth,
            layoutButtonTriggerHeight])
    }
    
    override func layoutSubviews()
    {
        let width:CGFloat = bounds.maxX
        let remainButtonTrigger:CGFloat = width - kButtonTriggerSize
        let marginLeftButtonTrigger:CGFloat = remainButtonTrigger / 2.0
        layoutButtonTriggerLeft.constant = marginLeftButtonTrigger
        
        super.layoutSubviews()
    }
    
    //MARK: actions
