Transition Class

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Controls the animations for page-to-page transitions in a Navigator.

Unlike the EnteringAnimation and ExitingAnimation triggers, Transition allows you to make different animations depending on which page is being navigating to, or away from.

Example

<Page ux:Template="Main">
    <Transition To="Contacts">
        <Move X="-1" RelativeTo="ParentSize" Duration="1"/>
    </Transition>
    <Transition>
        <Move Y="1" RelativeTo="ParentSize" Duration="1"/>
    </Transition>
</Page>

This page has a special transition if navigating to the Contacts page. In this case it will slide the page to the left. All other transitions away from this page will slide down.

To / From

Every navigation change defines a "To" and "From" page. In Transition these are always defined as the the forward ordering of the pages in the navigation. This ensures that when navigating backward (such as using goBack) the same transitions will be used, but done in reverse.

For example, a <Transition To="Contacts"> matches a forward transition to the Contacts page, as well as a backwards transition from the Contacts page to this one.

Similarly, a <Transtion From="Main"> matches a forward transition from the Main page, as well as a backwards transition from this page to the Main page.

Priority

Only one Transition, the one with the highest priority, will be selected for each page change. The priority ordering is:

A Style match on the operational style
Interaction match other than Any
To page name match
From page name match
Direction of ToBack, FromBack, ToFront, FromFront
Direction of ToActive, ToInactive
Direction of InFront, Behind
Direction Any

If no matching Transition is found then a default one will be created according to the Navigator.Transition property. If you don't want a default then specify a final fallback transition without properties <Transition>.

Play direction

If the page is becoming inactive the transition will be played forward. If the page is becoming active the transition will be played backward. This means the transition is always defining the animation towards the inactive state.

With certain combinations of properties this may at first seem odd, for example:

<Transition Direction="ToActive">
    <Move X="100" Duration="1"/>
</Transition>

This Transition is only selected when the page is becoming the active one. The animation will start at X=100 and move towards X=0 over a duration of 1.

The final state of any active page is always with all transitions deactivated.

Extended Example

The Transition Example shows a variety of page transitions using Transition.

Location

Namespace: Fuse.Triggers
Package: Fuse.Controls.Navigation 2.9.1

Show Uno properties and methods

Interface of Transition

AutoRelease : bool ux

By default a page will be released once the transition to the inactive state is complete (at the end of this trigger). Set to false to disable this behaviour.

Direction : TransitionDirection ux

Which navigation directions, of the page, match this transition.

From : string ux

"From" pages matching thing Transition. If specified only transitions from one of these pages will match the trigger. See the remarks on Transition about backward navigation.

Mode : TransitionMode ux

Style : string ux

If non-null then only a navigation operation style will match this transition.

To : string ux

"To" pages matching thing Transition. If specified only transitions to one of these pages will match the trigger. See the remarks on Transition about backward navigation.

Transition Constructor uno

Creates a new Transition

UseTransition : NavigationControlTransition ux

Selects a standard transition to use instead of a custom one.

Inherited from Trigger

Actions : IList of TriggerAction ux

A list of actions that execute with the trigger. These may react on simple direction changes, or at specific time offsets.

Activate(Action) uno

Activates the trigger (target progress of 1).

Animators : IList of Animator ux

BackwardAnimation : TriggerAnimation ux

Specifies an explicit backward animation instead of using the implied backward animation of the animators involved. Be aware that actions are not part of the animation.

Bypass : TriggerBypassMode ux

Specifies how changes in state are handled while initializing and rooting the trigger.

BypassActivate uno

BypassDeactivate uno

BypassSeek(double, AnimationVariant) uno

CrossFadeDuration : double ux

If there is a transition between forward/backward playback and two timeilnes are being used (implicit or explicit) this specifies the cross-fade time.

Deactivate uno

Deactivates the trigger (target progress of 0).

DirectActivate(Action) uno

DirectDeactivate uno

DirectSeek(double, AnimationVariant) uno

HasActions : bool uno

HasAnimators : bool uno

HasBackwardAnimation : bool uno

true if there is an explicit backward animation.

InversePulse uno

OnPlayStateChanged(TriggerPlayState) uno

OnProgressChanged uno

PlayEnd(bool, Action) uno

Play the trigger from where it currently is to the end.

PlayTo(double, AnimationVariant) uno

Plays to a specific progress with the given animation variant.

Progress : double uno

The current progress of the trigger.

Pulse uno

Plays the trigger to progress 1 then back to 0.

PulseBackward uno

Plays the trigger starting at progress=1 down to 0.

RecreateAnimationState uno

RequireLayout(Visual) uno

Indicates the trigger is bound to the layout of a visual. This will keep the trigger in Bypass mode until after the first layout of the element is obtained. This is required since layout does not happen in the same root grouping/update phase as the creation of the element, yet not having a layout should qualify as part of the rooting period.

Seek(double, AnimationVariant) uno

Seeks to a specific progress with the given animation variant.

Start uno

Stop(bool) uno

StretchDuration : double ux

Stretches the duration of the animation to fill up this period of time.

TimeMultiplier : double ux

Specifies a multiplier to the elapsed time for animation playback.

Inherited from NodeGroupBase

FindTemplate(string) : Template uno

Nodes : IList of Node ux

Nodes to add to the Parent when this trigger is any non-deactivated state (Progress > 0)

OnNodeAdded(Node) uno

OnNodeRemoved(Node) uno

Resources : IList of Resource ux

Templates : IList of Template ux

Inherited from Node

Add(Binding) uno

Bindings : IList of Binding ux

The list of bindings belonging to this node.

ContextParent : Node uno

The context parent is the semantic parent of this node. It is where non-UI structure should be resolved, like looking for the DataContext, a Navigation, or other semantic item.

FindByType<T> : T uno

FindNodeByName(Selector, Predicate<Node> (Node)) : Node uno

Finds the first node with a given name that satisfies the given acceptor. The serach algorithm works as follows: Nodes in the subtree are matched first, then it matches the nodes in the subtrees ofthe ancestor nodes by turn all the way to the root. If no matching node is found, the function returns null.

GetNearestAncestorOfType<T> : T uno

Insert(int, Binding) uno

IsRootingCompleted : bool uno

Whether rooting for this node is completed. Returns false if unrooting has started.

IsRootingStarted : bool uno

Whether rooting of this node has started. Note that even if this property returns true, rooting may not yet be completed for the node. See also IsRootingCompleted.

Name : Selector ux

Run-time name of the node. This property is automatically set using the ux:Name attribute.

NextSibling<T> : T uno

Returns the next sibling node of the given type.

OnDataChanged(string, object) uno

OnRooted uno

If you override OnRooted you must call base.OnRooted() first in your derived class. No other processing should happen first, otherwise you might end up in an undefined state.

OnUnrooted uno

Parent : Visual uno

The parent Visual of this node. Will return null if the node is not rooted.

PreviousSibling<T> : T uno