private Xamarin.Forms.Animation CreateFarwardAnimationForFourValues()
{
double v1 = 0, v2 = 0, v3 = 0, v4 = 0;
var Parent = new Xamarin.Forms.Animation((d) => Target.GetType().GetProperty(PropertyName).SetValue(Target, new CornerRadius(v1, v2, v3, v4)), 0, 1, AnimationEasing);
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
v1 = d;
}, Convert.ToDouble(_structStartValues[0]), Convert.ToDouble(_structEndValues[0])));
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
v2 = d;
}, Convert.ToDouble(_structStartValues[1]), Convert.ToDouble(_structEndValues[1])));
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
v3 = d;
}, Convert.ToDouble(_structStartValues[2]), Convert.ToDouble(_structEndValues[2])));
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
v4 = d;
}, Convert.ToDouble(_structStartValues[3]), Convert.ToDouble(_structEndValues[3])));
return(Parent);
}
public override Xamarin.Forms.Animation CreateReverseAnimation()
{
double A = 0, R = 0, G = 0, B = 0;
var Parent = new Xamarin.Forms.Animation((d) => Target.GetType().GetProperty(PropertyName).SetValue(Target, Xamarin.Forms.Color.FromRgba(R, G, B, A)), 0, 1, AnimationEasing);
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
A = d;
}, Xamarin.Forms.Color.FromHex(EndValue.ToString()).A, Xamarin.Forms.Color.FromHex(StartValue.ToString()).A));
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
R = d;
}, Xamarin.Forms.Color.FromHex(EndValue.ToString()).R, Xamarin.Forms.Color.FromHex(StartValue.ToString()).R));
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
G = d;
}, Xamarin.Forms.Color.FromHex(EndValue.ToString()).G, Xamarin.Forms.Color.FromHex(StartValue.ToString()).G));
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
B = d;
}, Xamarin.Forms.Color.FromHex(EndValue.ToString()).B, Xamarin.Forms.Color.FromHex(StartValue.ToString()).B));
return(Parent);
}
public override Xamarin.Forms.Animation OnAnimate()
{
var animation = new Xamarin.Forms.Animation();
for (var i = 1; i < _sortedKeyFrames.Count; i++)
{
var fromFrame = (KeyFrame <TValue>)_sortedKeyFrames[i - 1];
var toFrame = (KeyFrame <TValue>)_sortedKeyFrames[i];
var toFrameEasing = toFrame.Easing != Easing.Linear
? toFrame.Easing
: Easing;
var frameAnimation = new Xamarin.Forms.Animation(x =>
{
var value = Tweener.Tween(fromFrame.Value, toFrame.Value, x);
Target.SetValue(TargetProperty, value);
},
easing: toFrameEasing);
var beginAt = (double)fromFrame.KeyTime / Duration;
var endAt = (double)toFrame.KeyTime / Duration;
animation.Add(beginAt, endAt, frameAnimation);
}
return(animation);
}
private Xamarin.Forms.Animation CreateReverseAnimationForTwoValues()
{
double v1 = 0, v2 = 0;
var Parent = new Xamarin.Forms.Animation((d) => Target.GetType().GetProperty(PropertyName).SetValue(Target, new Thickness(v1, v2)), 0, 1, AnimationEasing);
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
v1 = d;
}, Convert.ToDouble(_structEndValues[0]), Convert.ToDouble(_structStartValues[0])));
Parent.Add(0, 1, new Xamarin.Forms.Animation(d =>
{
v2 = d;
}, Convert.ToDouble(_structEndValues[1]), Convert.ToDouble(_structStartValues[1])));
return(Parent);
}
public void PlayReverse()
{
uint Length = 0;
var Parent = new Xamarin.Forms.Animation();
for (int i = PropertyAnimations.Count - 1; i >= 0; i--)
{
PropertyAnimations[i].Target = IsGlobal ? Target : PropertyAnimations[i].Target;
Length += PropertyAnimations[i].Length;
Parent.Add(0, 1, PropertyAnimations[i].CreateReverseAnimation());
}
Parent.Commit(Target, $"{nameof(ParallelAnimation)}", Rate, Length, AnimationEasing, GetFinishedAction());
}
public void Play()
{
uint Length = 0;
var Parent = new Xamarin.Forms.Animation();
foreach (var propertyAnimation in PropertyAnimations)
{
propertyAnimation.Target = IsGlobal ? Target : propertyAnimation.Target;
Length += propertyAnimation.Length;
Parent.Add(0, 1, propertyAnimation.CreateFarwardAnimation());
}
Parent.Commit(Target, $"{nameof(ParallelAnimation)}", Rate, Length, AnimationEasing, GetFinishedAction());
}
private void OnButton3Clicked(object sender, EventArgs e)
{
Button button = (Button)sender;
Xamarin.Forms.Animation parentAnimation = new Xamarin.Forms.Animation();
Xamarin.Forms.Animation upAnimation = new Xamarin.Forms.Animation(v => button.Scale = v, 1, 5, Easing.SpringIn, () => Debug.WriteLine("up finished"));
parentAnimation.Add(0, 0.5, upAnimation);
Xamarin.Forms.Animation downAnimation = new Xamarin.Forms.Animation(v => button.Scale = v, 5, 1, Easing.SpringOut, () => Debug.WriteLine("down finished"));
parentAnimation.Insert(0.5, 1, downAnimation);
parentAnimation.Commit(this, "Animation3", 16, 5000, null, (v, c) => Debug.WriteLine("parent finished: {0} {1}", v, c));
}
public override Xamarin.Forms.Animation OnAnimate()
{
var animation = new Xamarin.Forms.Animation();
foreach (var anim in Animations)
{
var beginAt = GetBeginAt(anim);
var finishAt = GetFinishAt(anim);
if (anim.Duration > 0)
{
finishAt = Math.Min(finishAt, beginAt + (double)anim.Duration / Duration);
Debug.WriteLine($"FinishAt updated to {finishAt}");
}
animation.Add(beginAt, finishAt, anim.OnAnimate());
}
return(animation);
}
