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 End-User Documentation

TransitionManager.CustomTransition Event

Allows you to customize an animated state transition.

Namespace:DevExpress.Utils.Animation
Assembly:DevExpress.Utils.v17.2.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type DevExpress.Utils.Animation.CustomTransitionEventArgs containing data related to this event.

Expanded Remarks

The CustomTransition event fires when an animated state transition starts. It allows you to customize the parameters of the animated transition, specify an easing function and change the clip bounds of animation.

An easing function allows you to accelerate and/or decelerate animation progress. The easing function can be specified via the EasingFunction parameter of the CustomTransition event. The following easing functions (objects implementing the DevExpress.Data.Utils.IEasingFunction interface) are available:

  • DevExpress.Data.Utils.BackEase
  • DevExpress.Data.Utils.ElasticEase
  • DevExpress.Data.Utils.PowerEase
  • DevExpress.Data.Utils.QuadraticEase
  • DevExpress.Data.Utils.QuinticEase
  • DevExpress.Data.Utils.SineEase
  • DevExpress.Data.Utils.ExponentialEase
  • DevExpress.Data.Utils.CircleEase
  • DevExpress.Data.Utils.BounceEase
  • DevExpress.Data.Utils.CubicEase

You can control whether the animation accelerates, decelerates or both by specifying the Transition.EasingMode property.

See the following article in MSDN for graphical representations of easing functions: Easing Functions.

Expanded Example

Show Me

A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=T114295.

This example contains an XtraTabControl with two tabs. The TransitionManager component is used to animate switching between these tabs, using a certain animation effect (specified by the Transition Type combobox). Animated tab switching is initiated in the XtraTabControl.SelectedPageChanging event handler and is finished in the XtraTabControl.SelectedPageChanged event handler.

Before the transition starts, it is created in the SelectedIndexChanged event of the combobox control. 

By default, the entire area occupied by the control is animated by the TransitionManager. In the example, the CustomTransition event is handled to exclude the tab region from animation.

The following image shows the state transition in progress:

Expanded See Also

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