private static void DisplayedValueChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
AnnularProgressBar t = (AnnularProgressBar)d;
double value = (double)e.NewValue;
UIElement[] layers;
if (value < 0.25)
{
layers = new UIElement[] { t.HeadEllipse, t.PathL, t.PathR, t.TailEllipse };
}
else if (value < 0.50)
{
layers = new UIElement[] { t.TailEllipse, t.HeadEllipse, t.PathL, t.PathR };
}
else if (value < 0.75)
{
layers = new UIElement[] { t.TailEllipse, t.HeadEllipse, t.PathL, t.PathR };
}
else
{
layers = new UIElement[] { t.PathR, t.TailEllipse, t.HeadEllipse, t.PathL };
}
for (int i = 0; i < layers.Length; i++)
{
Panel.SetZIndex(layers[i], i);
}
}
private static void ValueChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
AnnularProgressBar t = (AnnularProgressBar)d;
Storyboard valueStoryboard = new Storyboard();
if ((double)e.NewValue == -1)
{
DoubleAnimation valueAnimation = new DoubleAnimation(1, new Duration(TimeSpan.FromSeconds(0.5)))
{
EasingFunction = new CubicEase()
{
EasingMode = EasingMode.EaseOut
}
};
Storyboard.SetTarget(valueAnimation, d);
Storyboard.SetTargetProperty(valueAnimation, new PropertyPath(DisplayedValueProperty));
valueStoryboard.Children.Add(valueAnimation);
Storyboard opacityStoryboard = new Storyboard();
DoubleAnimation opacityAnimation = new DoubleAnimation(0, new Duration(TimeSpan.FromSeconds(0.5)))
{
EasingFunction = new CubicEase()
{
EasingMode = EasingMode.EaseOut
},
};
Storyboard.SetTarget(opacityAnimation, t.ProgressGrid);
Storyboard.SetTargetProperty(opacityAnimation, new PropertyPath(OpacityProperty));
opacityStoryboard.Children.Add(opacityAnimation);
valueStoryboard.Completed += (sender, e1) =>
{
opacityStoryboard.Begin();
};
}
else
{
DoubleAnimation valueAnimation = new DoubleAnimation((double)e.NewValue, new Duration(TimeSpan.FromSeconds(0.5)))
{
EasingFunction = new CubicEase()
{
EasingMode = EasingMode.EaseOut
}
};
Storyboard.SetTarget(valueAnimation, d);
Storyboard.SetTargetProperty(valueAnimation, new PropertyPath(DisplayedValueProperty));
if ((double)e.OldValue == -1)
{
valueAnimation.From = 0;
Storyboard opacityStoryboard = new Storyboard();
DoubleAnimation opacityAnimation = new DoubleAnimation(1, new Duration(TimeSpan.FromSeconds(0.5)))
{
EasingFunction = new CubicEase()
{
EasingMode = EasingMode.EaseOut
}
};
Storyboard.SetTarget(opacityAnimation, t.ProgressGrid);
Storyboard.SetTargetProperty(opacityAnimation, new PropertyPath(OpacityProperty));
opacityStoryboard.Children.Add(opacityAnimation);
opacityStoryboard.Begin();
}
valueStoryboard.Children.Add(valueAnimation);
}
valueStoryboard.Begin();
}
