/// <summary>
/// Applies a random transition effect between current and next slide show images
/// </summary>
private void ApplyTransitionEffect()
{
DoubleAnimation da = new DoubleAnimation(0.0, 1.0, new Duration(TimeSpan.FromMilliseconds(totalAnimationPeriod / 5)), FillBehavior.HoldEnd);
da.AccelerationRatio = 0.5;
da.DecelerationRatio = 0.5;
da.Completed += new EventHandler(this.TransitionCompleted);
// Force the frame rate to animFrameRate instead of WPF's default value of 60fps.
// this will reduce the CPU load on low-end machines, and will conserve battery for portable devices.
Timeline.SetDesiredFrameRate(da, animFrameRate);
VisualBrush vb = new VisualBrush(this._oldChild);
vb.Viewbox = new Rect(0, 0, this._oldChild.ActualWidth, this._oldChild.ActualHeight);
vb.ViewboxUnits = BrushMappingMode.Absolute;
this._oldChild.Width = this._oldChild.ActualWidth;
this._oldChild.Height = this._oldChild.ActualHeight;
this._oldChild.Measure(new Size(this._oldChild.ActualWidth, this._oldChild.ActualHeight));
this._oldChild.Arrange(new Rect(0, 0, this._oldChild.ActualWidth, this._oldChild.ActualHeight));
TransitionEffect transitionEffect = GetRandomTransitionEffect();
transitionEffect.OldImage = vb;
this._currentChild.Effect = transitionEffect;
transitionEffect.BeginAnimation(TransitionEffect.ProgressProperty, da, HandoffBehavior.SnapshotAndReplace);
}
private void MediaCenter_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
VisualBrush vbrush = new VisualBrush(this);
_TransitionEffect = _TransitionEffect.Clone() as TransitionEffect;
this.Effect = _TransitionEffect;
// _TransitionEffect.Input = vbrush.Clone();
_TransitionEffect.OldImage = vbrush.Clone();
_TransitionEffect.BeginAnimation(TransitionEffect.ProgressProperty, _Animation);
}
private void ApplyTransitionEffect()
{
TransitionEffect[] effectGroup = transitionEffects[this.rand.Next(transitionEffects.Length)];
TransitionEffect effect = effectGroup[this.rand.Next(effectGroup.Length)];
if (_useOrder)
{
effectGroup = transitionEffectsSingle[_nextEffect % transitionEffectsSingle.Length];
effect = effectGroup[0];
if (++_usedTimes == 2)
{
_usedTimes = 0;
_nextEffect++;
}
this.effectName.Text = ExtractName(effect);
if (_nextEffect == transitionEffectsSingle.Length)
{
_useOrder = false;
this.effectName.Text = "mixed effects, random";
}
}
RandomizedTransitionEffect randEffect = effect as RandomizedTransitionEffect;
if (randEffect != null)
{
randEffect.RandomSeed = this.rand.NextDouble();
}
DoubleAnimation da = new DoubleAnimation(0.0, 1.0, new Duration(TimeSpan.FromSeconds(2.0)), FillBehavior.HoldEnd);
da.AccelerationRatio = 0.5;
da.DecelerationRatio = 0.5;
da.Completed += new EventHandler(this.TransitionCompleted);
effect.BeginAnimation(TransitionEffect.ProgressProperty, da);
VisualBrush vb = new VisualBrush(this.oldChild);
vb.Viewbox = new Rect(0, 0, this.oldChild.ActualWidth, this.oldChild.ActualHeight);
vb.ViewboxUnits = BrushMappingMode.Absolute;
//this.oldChild.Width = this.oldChild.ActualWidth;
//this.oldChild.Height = this.oldChild.ActualHeight;
//this.oldChild.Measure(new Size(this.oldChild.ActualWidth, this.oldChild.ActualHeight));
//this.oldChild.Arrange(new Rect(0, 0, this.oldChild.ActualWidth, this.oldChild.ActualHeight));
effect.OldImage = vb;
this.currentChild.Effect = effect;
}
private void AnimateContent(object oldContent, object newContent)
{
var oldContentVisual = GetVisualChild();
var tier = (RenderCapability.Tier >> 16);
// if we dont have a selector, or the visual content is not a FE, do not animate
if (EnableTransitions == false || ContentTransitionSelector == null || oldContentVisual == null || tier < 2)
{
SetNonVisualChild(newContent);
return;
}
// create the transition
TransitionEffect transitionEffect = ContentTransitionSelector.GetTransition(oldContent, newContent, this);
if (transitionEffect == null)
{
throw new InvalidOperationException("Returned transition effect is null.");
}
// create the animation
DoubleAnimation da = new DoubleAnimation(0.0, 1.0, new Duration(Duration), FillBehavior.HoldEnd);
da.Completed += delegate
{
ApplyEffect(null);
};
if (EasingFunction != null)
{
da.EasingFunction = EasingFunction;
}
else
{
da.AccelerationRatio = 0.5;
da.DecelerationRatio = 0.5;
}
transitionEffect.BeginAnimation(TransitionEffect.ProgressProperty, da);
VisualBrush oldVisualBrush = new VisualBrush(oldContentVisual);
transitionEffect.OldImage = oldVisualBrush;
SetNonVisualChild(newContent);
ApplyEffect(transitionEffect);
}