private void UpdateBusyAnimation()
{
if ((BusyAnimation == null || (BusyAnimation != null && BusyAnimation.Name == DefaultBusyAnimationName)) && Track != null && _busyBar != null)
{
if (BusyAnimation != null && IsBusyAnimationRunning)
{
IsBusyAnimationRunning = false;
BusyAnimation.Stop(this);
BusyAnimation.Remove(this);
}
// NOTE: Lack of contracts: Children always have collection instance
Contract.Assume(_busyBar.Children != null);
BusyAnimation = new Storyboard {
Name = DefaultBusyAnimationName, RepeatBehavior = RepeatBehavior.Forever
};
var firstCycleAnimations = new Collection <DoubleAnimation>();
var secondCycleAnimations = new Collection <DoubleAnimation>();
const double time = 0.25;
const double durationTime = time * 2;
const double beginTimeIncrement = time / 2;
const double shortPauseTime = time;
const double longPauseTime = time * 1.5;
var partMotionTime = (_busyBar.Children.Count - 1) * beginTimeIncrement + durationTime + shortPauseTime;
var length = Math.Min(Track.ActualWidth, Track.ActualHeight) * Math.PI;
for (var i = 0; i < _busyBar.Children.Count; i++)
{
var element = (FrameworkElement)_busyBar.Children[_busyBar.Children.Count - i - 1];
if (element != null)
{
var elementLength = Math.Max(element.Width, element.Height);
var index = (_busyBar.Children.Count - 1) / 2 - i;
var endPosition = length / 2 + index * (elementLength * 2);
var endAngle = endPosition / length * 360d;
var duration = new Duration(TimeSpan.FromSeconds(durationTime));
var firstCycleAnimation =
new DoubleAnimation(0d, endAngle, duration)
{
BeginTime = TimeSpan.FromSeconds(i * beginTimeIncrement)
};
Storyboard.SetTarget(firstCycleAnimation, element);
Storyboard.SetTargetProperty(firstCycleAnimation, new PropertyPath(AngleProperty));
var secondCycleAnimation =
new DoubleAnimation(0d, endAngle, duration)
{
BeginTime = TimeSpan.FromSeconds(partMotionTime + durationTime + i * beginTimeIncrement)
};
Storyboard.SetTarget(secondCycleAnimation, element);
Storyboard.SetTargetProperty(secondCycleAnimation, new PropertyPath(AngleProperty));
firstCycleAnimations.Add(firstCycleAnimation);
secondCycleAnimations.Add(secondCycleAnimation);
}
}
for (var i = 0; i < _busyBar.Children.Count; i++)
{
var element = (FrameworkElement)_busyBar.Children[_busyBar.Children.Count - i - 1];
if (element != null)
{
var duration = new Duration(TimeSpan.FromSeconds(durationTime));
var firstCycleAnimation =
new DoubleAnimation(360d, duration)
{
BeginTime = TimeSpan.FromSeconds(partMotionTime + i * beginTimeIncrement)
};
Storyboard.SetTarget(firstCycleAnimation, element);
Storyboard.SetTargetProperty(firstCycleAnimation, new PropertyPath(AngleProperty));
var secondCycleAnimation =
new DoubleAnimation(360d, duration)
{
BeginTime = TimeSpan.FromSeconds(partMotionTime * 2 + durationTime + i * beginTimeIncrement)
};
Storyboard.SetTarget(secondCycleAnimation, element);
Storyboard.SetTargetProperty(secondCycleAnimation, new PropertyPath(AngleProperty));
var moveAnimation =
new DoubleAnimation(-1.0, new Duration(TimeSpan.FromSeconds(0)))
{
BeginTime = TimeSpan.FromSeconds(partMotionTime * 2 + durationTime * 2 + i * beginTimeIncrement)
};
Storyboard.SetTarget(moveAnimation, element);
Storyboard.SetTargetProperty(moveAnimation, new PropertyPath(AngleProperty));
firstCycleAnimations.Add(firstCycleAnimation);
secondCycleAnimations.Add(secondCycleAnimation);
secondCycleAnimations.Add(moveAnimation);
}
}
BusyAnimation.Duration = new Duration(TimeSpan.FromSeconds(longPauseTime + partMotionTime * 3 + shortPauseTime * 2 + durationTime));
// NOTE: Lack of contracts: Children always have collection instance
Contract.Assume(BusyAnimation.Children != null);
foreach (var animation in firstCycleAnimations)
{
BusyAnimation.Children.Add(animation);
}
foreach (var animation in secondCycleAnimations)
{
BusyAnimation.Children.Add(animation);
}
if (BusyAnimation.CanFreeze)
{
BusyAnimation.Freeze();
}
if (State == ProgressState.Busy && IsEnabled)
{
BusyAnimation.Begin(this, Template, true);
IsBusyAnimationRunning = true;
}
}
}
private void UpdateBusyAnimation()
{
if ((BusyAnimation == null || (BusyAnimation != null && BusyAnimation.Name == DefaultBusyAnimationName)) && Track != null && _busyBar != null)
{
if (BusyAnimation != null && IsBusyAnimationRunning)
{
IsBusyAnimationRunning = false;
BusyAnimation.Stop(this);
BusyAnimation.Remove(this);
}
// NOTE: Lack of contracts: Children always have collection instance
Contract.Assume(_busyBar.Children != null);
BusyAnimation = new Storyboard {
Name = DefaultBusyAnimationName, RepeatBehavior = RepeatBehavior.Forever
};
const double time = 0.25;
const double durationTime = time * 2;
const double beginTimeIncrement = time / 2;
const double shortPauseTime = time;
const double longPauseTime = time * 1.5;
var partMotionTime = (_busyBar.Children.Count - 1) * beginTimeIncrement + durationTime;
var busyAnimations = new Collection <DoubleAnimation>();
var width = Track.ActualWidth;
var height = Track.ActualHeight;
for (var i = 0; i < _busyBar.Children.Count; i++)
{
var element = (FrameworkElement)_busyBar.Children[_busyBar.Children.Count - i - 1];
if (element != null)
{
var elementWidth = element.Width;
var elementHeight = element.Height;
var index = (_busyBar.Children.Count - 1) / 2 - i;
var center = (Orientation == Orientation.Horizontal ? width : height) / 2;
var margin = Orientation == Orientation.Horizontal ? elementWidth : elementHeight;
var startPosition = -(Orientation == Orientation.Horizontal ? elementWidth : elementHeight) - 1;
var endPosition = center + index * ((Orientation == Orientation.Horizontal ? elementWidth : elementHeight) + margin);
var duration = new Duration(TimeSpan.FromSeconds(durationTime));
var animation = new DoubleAnimation(startPosition, endPosition, duration)
{
BeginTime = TimeSpan.FromSeconds(i * beginTimeIncrement)
};
Storyboard.SetTarget(animation, element);
Storyboard.SetTargetProperty(animation,
new PropertyPath(Orientation == Orientation.Horizontal ? Canvas.LeftProperty : Canvas.TopProperty));
busyAnimations.Add(animation);
}
}
for (var i = 0; i < _busyBar.Children.Count; i++)
{
var element = (FrameworkElement)_busyBar.Children[_busyBar.Children.Count - i - 1];
if (element != null)
{
var elementWidth = element.Width;
var elementHeight = element.Height;
var endPosition = (Orientation == Orientation.Horizontal ? width : height) +
(Orientation == Orientation.Horizontal ? elementWidth : elementHeight) + 1;
var duration = new Duration(TimeSpan.FromSeconds(durationTime));
var animation = new DoubleAnimation(endPosition, duration)
{
BeginTime = TimeSpan.FromSeconds(partMotionTime + shortPauseTime + i * beginTimeIncrement)
};
Storyboard.SetTarget(animation, element);
Storyboard.SetTargetProperty(animation,
new PropertyPath(Orientation == Orientation.Horizontal ? Canvas.LeftProperty : Canvas.TopProperty));
busyAnimations.Add(animation);
}
}
BusyAnimation.Duration = new Duration(TimeSpan.FromSeconds(partMotionTime * 2 + shortPauseTime + longPauseTime));
// NOTE: Lack of contracts: Children always have collection instance
Contract.Assume(BusyAnimation.Children != null);
foreach (var animation in busyAnimations)
{
BusyAnimation.Children.Add(animation);
}
if (BusyAnimation.CanFreeze)
{
BusyAnimation.Freeze();
}
if (State == ProgressState.Busy && IsEnabled)
{
BusyAnimation.Begin(this, Template, true);
IsBusyAnimationRunning = true;
}
}
}