private void RectangularContent_MouseDown(object sender, MouseButtonEventArgs e)
{
DoubleAnimation OpacityAnimation = new DoubleAnimation();
OpacityAnimation.From = RectangularContent.Opacity;
OpacityAnimation.To = 0.8d;
OpacityAnimation.Duration = TimeSpan.FromMilliseconds(200);
RectangularContent.BeginAnimation(OpacityProperty, OpacityAnimation);
DoubleAnimation circulator_dissappearing = new DoubleAnimation();
circulator_dissappearing.From = Circulator.Opacity;
circulator_dissappearing.To = 1;
circulator_dissappearing.Duration = TimeSpan.FromMilliseconds(100);
circulator_dissappearing.EasingFunction = new ExponentialEase();
Circulator.BeginAnimation(OpacityProperty, circulator_dissappearing);
DoubleAnimation increment = new DoubleAnimation(0, 200, new Duration(TimeSpan.FromMilliseconds(800)));
increment.EasingFunction = new QuarticEase();
Circulator.BeginAnimation(WidthProperty, increment);
Circulator.BeginAnimation(HeightProperty, increment);
}
private void RectangularContent_MouseUp(object sender, MouseButtonEventArgs e)
{
DoubleAnimation OpacityAnimation = new DoubleAnimation();
OpacityAnimation.From = RectangularContent.Opacity;
OpacityAnimation.To = 1;
OpacityAnimation.Duration = TimeSpan.FromMilliseconds(200);
RectangularContent.BeginAnimation(OpacityProperty, OpacityAnimation);
DoubleAnimation circulator_dissappearing = new DoubleAnimation();
circulator_dissappearing.From = Circulator.Opacity;
circulator_dissappearing.To = 0;
circulator_dissappearing.Duration = TimeSpan.FromMilliseconds(400);
circulator_dissappearing.EasingFunction = new ExponentialEase();
Circulator.BeginAnimation(OpacityProperty, circulator_dissappearing);
}