public bool GoToState(VisualState state, bool useTransitions)
{
if (state == CurrentState)
{
return true;
}
string currentStateName = CurrentState != null ? CurrentState.Name : String.Empty;
VisualTransition transition = useTransitions ? GetTransition(Transitions, currentStateName, state.Name) : null;
Storyboard transitionStoryboard = transition != null ? transition.Storyboard : null;
Storyboard storyboard;
if (transitionStoryboard != null && state.Storyboard != null)
{
// create a sequential animation with the transition storyboard first and then the state storyboard
SequentialTimeline sequentialTimeline = new SequentialTimeline();
sequentialTimeline.Children.Add(transitionStoryboard);
sequentialTimeline.Children.Add(state.Storyboard);
storyboard = new Storyboard();
storyboard.Children.Add(sequentialTimeline);
}
else
{
storyboard = transitionStoryboard ?? state.Storyboard;
}
StartNewStoryboard(storyboard);
CurrentState = state;
return true;
}
public void SequentialTimelineClockStoryboardTest()
{
DoubleAnimation animation1 = new DoubleAnimation { To = 100, Duration = Duration.FromTimeSpan(TimeSpan.FromSeconds(1)) };
DoubleAnimation animation2 = new DoubleAnimation { To = 200, Duration = Duration.FromTimeSpan(TimeSpan.FromSeconds(0)) };
DoubleAnimation animation3 = new DoubleAnimation { To = 300, Duration = Duration.FromTimeSpan(TimeSpan.FromSeconds(1)) };
SequentialTimeline sequentialTimeline = new SequentialTimeline();
sequentialTimeline.Children.Add(animation1);
sequentialTimeline.Children.Add(animation2);
sequentialTimeline.Children.Add(animation3);
Storyboard storyboard = new Storyboard();
storyboard.Children.Add(sequentialTimeline);
FrameworkElement element = new FrameworkElement { Width = 0, Height = 0 };
Storyboard.SetTarget(animation1, element);
Storyboard.SetTargetProperty(animation1, PropertyPath.FromDependencyProperty(FrameworkElement.WidthProperty));
Storyboard.SetTarget(animation2, element);
Storyboard.SetTargetProperty(animation2, PropertyPath.FromDependencyProperty(FrameworkElement.WidthProperty));
Storyboard.SetTarget(animation3, element);
Storyboard.SetTargetProperty(animation3, PropertyPath.FromDependencyProperty(FrameworkElement.WidthProperty));
TestRootClock rootClock = new TestRootClock();
element.SetAnimatableRootClock(new AnimatableRootClock(rootClock, true));
storyboard.Begin(element);
rootClock.Tick(TimeSpan.FromSeconds(0));
Assert.AreEqual(0, element.Width);
rootClock.Tick(TimeSpan.FromSeconds(0.9));
Assert.AreEqual(90, element.Width);
rootClock.Tick(TimeSpan.FromSeconds(1));
Assert.AreEqual(200, element.Width);
rootClock.Tick(TimeSpan.FromSeconds(1.5));
Assert.AreEqual(250, element.Width);
rootClock.Tick(TimeSpan.FromSeconds(2));
Assert.AreEqual(300, element.Width);
}
public SequentialTimelineClock(SequentialTimeline SequentialTimeline, IEnumerable<TimelineClock> children)
: base(new SequentialClock(children), SequentialTimeline, children)
{
//
}
public SequentialTimelineClock(SequentialTimeline SequentialTimeline, IEnumerable <TimelineClock> children) :
base(new SequentialClock(children), SequentialTimeline, children)
{
//
}