super: UIResponder (on iOS)

This class is reserved and cannot be directly instantiated.


  • None


  • var rotationAngle: Float Set the transform applied to the view with an affine transformation matrix constructed from the provided rotation value.

  • var backgroundColor: Color The view’s background color.

  • var borderWidth: Float The width of the view's border. When this value is greater than 0.0, the layer draws a border using the current borderColor value. The border is drawn inset from the receiver’s bounds by the value specified in this property. It is composited above the receiver’s contents and sublayers and includes the effects of the cornerRadius property.

  • var borderColor: Color The color of the view’s border.

  • var cornerRadius: Float The radius to use when drawing rounded corners for the view’s background. Setting the radius to a value greater than 0.0 causes the view to begin drawing rounded corners on its background.

  • var hidden: Bool A Boolean value that determines whether the view is hidden. A hidden view disappears from its window and does not receive input events. It remains in its superview’s list of subviews, however, and participates in autoresizing as usual. Hiding a view with subviews has the effect of hiding those subviews and any view descendants they might have. This effect is implicit and does not alter the hidden state of the receiver’s descendants.

  • var alpha: Float The view’s alpha value. The value of this property is a floating-point number in the range 0.0 to 1.0, where 0.0 represents totally transparent and 1.0 represents totally opaque. This value affects only the current view and does not affect any of its embedded subviews.

  • var opaque: Bool A Boolean value that determines whether the view is opaque. An opaque view is expected to fill its bounds with entirely opaque content—that is, the content should have an alpha value of 1.0. If the view is opaque and either does not fill its bounds or contains wholly or partially transparent content, the results are unpredictable. You should always set the value of this property to false if the view is fully or partially transparent.

  • var tintColor: Color The first nondefault tint color value in the view’s hierarchy, ascending from and starting with the view itself. If the system cannot find a nondefault color in the hierarchy, this property’s value is a system-defined color instead.

  • var bounds: Rect The bounds rectangle, which describes the view’s location and size in its own coordinate system. On the screen, the bounds rectangle represents the same visible portion of the view as its frame rectangle. By default, the origin of the bounds rectangle is set to (0, 0) but you can change this value to display different portions of the view. The size of the bounds rectangle is coupled to the size of the frame rectangle, so that changes to one affect the other. Changing the bounds size grows or shrinks the view relative to its center point. The coordinates of the bounds rectangle are always specified in points.

  • var frame: Rect The frame rectangle, which describes the view’s location and size in its superview’s coordinate system.

  • var userInteractionEnabled: Bool A Boolean value that determines whether user events are ignored.

  • var shadowColor: Color The color of the view's shadow.

  • var shadowOffset: Size The offset (in points) of the view's shadow.

  • var shadowOpacity: Float The opacity of the view's shadow.

  • var shadowRadius: Float The blur radius (in points) used to render the view's shadow

  • var subviews: List The array of subviews.

  • var autoresizingMask: Autoresizing An integer bit mask that determines how the receiver resizes itself when its superview’s bounds change.

  • var flex: Flex FlexBox layout. (read-only)

  • var clipsToBounds: Bool Clip content to bounds.


  • func refresh() Notify the system that your view’s contents need to be redrawn. This method makes a note of the request and returns immediately. The view is not actually redrawn until the next drawing cycle, at which point all invalidated views are updated.

  • func addGestureRecognizer(gestureRecognizer: UIGestureRecognizer) Attaches a gesture recognizer to the view.

  • func removeGestureRecognizer(gestureRecognizer: UIGestureRecognizer) Detaches a gesture recognizer from the view.

  • func addSubview(view: UIView) Adds a view to the end of the list of subviews.

  • func removeFromSuperview() Unlinks the view from its superview and its window, and removes it from the responder chain.

  • func insertSubview(view: UIView, index: Int) Inserts a subview at the specified index.



  • .FlexibleBottomMargin
  • .FlexibleHeight
  • .FlexibleLeftMargin
  • .FlexibleRightMargin
  • .FlexibleTopMargin
  • .FlexibleWidth
  • .None