private void OnClickedExpander()
{
if (_initialHeight == 0)
{
_initialHeight = Container.Height - 15;
_expandedHeight = _initialHeight * 2;
}
bool isExpanded = ButtonExpand.Rotation == 180;
var from = isExpanded ? _expandedHeight : _initialHeight;
var to = isExpanded ? _initialHeight : _expandedHeight;
Easing easing = Easing.SpringOut;
uint length = 500;
switch (_counter)
{
case 0:
easing = new Easing(t => 9 * t * t * t - 13.5 * t * t + 5.5 * t);
EasingLabel.Text = "Hula Hoop Easing";
break;
case 1:
easing = new Easing(t => 1 - Math.Cos(10 * Math.PI * t) * Math.Exp(-5 * t));
EasingLabel.Text = "Shaking Easing";
break;
case 2:
easing = Easing.SpringOut;
EasingLabel.Text = "Spring Out Easing";
break;
case 3:
easing = Easing.SpringIn;
EasingLabel.Text = "Spring In Easing";
break;
}
TaskMonitor.Create(
async() =>
{
var easingLabelTask = EasingLabel.RotateTo(isExpanded ? 0 : 360, length, easing);
var rotateTask = ButtonExpand.RotateTo(isExpanded ? 0 : 180, length, easing);
var heightAnimation = Container.DoubleTo(
from,
to,
h => Container.HeightRequest = h,
length,
easing);
await Task.WhenAll(rotateTask, heightAnimation, easingLabelTask);
if (isExpanded)
{
EasingLabel.Text = "Show more details";
}
ButtonExpand.Rotation = isExpanded ? 0 : 180;
EasingLabel.Rotation = isExpanded ? 0 : 360;
});
}
