void AnimateToCompact()
{
UIView.AddKeyframeWithRelativeStartTime(0.0, 1.0, () => {
NSLayoutConstraint.DeactivateConstraints(new [] { marsLeadingToTrailing, jupiterLeadingToTrailing, saturnLeadingToTrailing });
NSLayoutConstraint.ActivateConstraints(new [] { marsCenter, jupiterCenter, saturnCenter });
View.LayoutIfNeeded();
});
UIView.AddKeyframeWithRelativeStartTime(0.1, 0.9, () => {
NSLayoutConstraint.DeactivateConstraints(new [] { earthLeadingToTrailing, uranusLeadingToTrailing });
NSLayoutConstraint.ActivateConstraints(new [] { earthCenter, uranusCenter });
View.LayoutIfNeeded();
});
UIView.AddKeyframeWithRelativeStartTime(0.3, 0.7, () => {
NSLayoutConstraint.DeactivateConstraints(new [] { venusLeadingToTrailing, neptuneLeadingToTrailing });
NSLayoutConstraint.ActivateConstraints(new [] { venusCenter, neptuneCenter });
View.LayoutIfNeeded();
});
UIView.AddKeyframeWithRelativeStartTime(0.5, 0.5, () => {
NSLayoutConstraint.DeactivateConstraints(new [] { mercuryLeadingToTrailing });
NSLayoutConstraint.ActivateConstraints(new [] { mercuryCenter });
View.LayoutIfNeeded();
});
}
/// Default action when dimissing showcase
/// Notifies delegate, removes views, and handles out-going animation
public static void CompleteShowcase(this MaterialShowcase materialShowcase, bool animated = true)
{
if (animated)
{
materialShowcase.targetRippleView.RemoveFromSuperview();
UIView.AnimateKeyframes(materialShowcase.aniGoOutDuration, 0, UIViewKeyframeAnimationOptions.CalculationModeLinear, () =>
{
UIView.AddKeyframeWithRelativeStartTime(0, .6f, () =>
{
materialShowcase.targetHolderView.Transform = CGAffineTransform.MakeScale(.4f, .4f);
materialShowcase.backgroundView.Transform = CGAffineTransform.MakeScale(1.3f, 1.3f);
materialShowcase.backgroundView.Alpha = 0;
});
UIView.AddKeyframeWithRelativeStartTime(.6f, .4f, () =>
{
materialShowcase.Alpha = 0;
});
}, (success) =>
{
// Recycle subviews
materialShowcase.RecycleSubviews();
// Remove it from current screen
materialShowcase.RemoveFromSuperview();
});
}
else
{
// Recycle subviews
materialShowcase.RecycleSubviews();
// Remove it from current screen
materialShowcase.RemoveFromSuperview();
}
}
void AnimateViewWithKeyframes(UIView rectangle, int min, int max)
{
var x = rectangle.Frame.X;
var h1 = Rnd.Next(min, max);
var h2 = Rnd.Next(min, max);
var h3 = Rnd.Next(min, max);
var h4 = Rnd.Next(min, max);
UIView.AnimateKeyframes(0.75f, 0, UIViewKeyframeAnimationOptions.Autoreverse | UIViewKeyframeAnimationOptions.Repeat, () =>
{
UIView.AddKeyframeWithRelativeStartTime(0.0, 0.25, () =>
{
rectangle.Frame = new RectangleF(x, 45, 5, h1);
});
UIView.AddKeyframeWithRelativeStartTime(0.25, 0.25, () =>
{
rectangle.Frame = new RectangleF(x, 45, 5, h2);
});
UIView.AddKeyframeWithRelativeStartTime(0.5, 0.25, () =>
{
rectangle.Frame = new RectangleF(x, 45, 5, h3);
});
UIView.AddKeyframeWithRelativeStartTime(0.75, 0.25, () =>
{
rectangle.Frame = new RectangleF(x, 45, 5, h4);
});
}, _ => { });
}
public override void AnimateTransition(IUIViewControllerContextTransitioning transitionContext)
{
var toViewController = GetViewController(transitionContext, UITransitionContext.ToViewControllerKey);
var fromViewController = GetViewController(transitionContext, UITransitionContext.FromViewControllerKey);
UIView fromView = fromViewController.View;
UIView toView = toViewController.View;
UIView containerView = transitionContext.ContainerView;
containerView.AddSubview(toView);
// Add a perspective transform
var transform = CATransform3D.Identity;
transform.m34 = -0.002f;
containerView.Layer.SublayerTransform = transform;
// Give both VCs the same start frame
CGRect initialFrame = transitionContext.GetInitialFrameForViewController(fromViewController);
fromView.Frame = initialFrame;
toView.Frame = initialFrame;
float factor = Reverse ? 1f : -1f;
// flip the to VC halfway round - hiding it
toView.Layer.Transform = GetRotation(factor * -(float)Math.PI / 2);
double duration = TransitionDuration(transitionContext);
Action animations = () =>
{
UIView.AddKeyframeWithRelativeStartTime(0.0, 0.5, () =>
{
fromView.Layer.Transform = GetRotation(factor * (float)Math.PI / 2);
});
UIView.AddKeyframeWithRelativeStartTime(0.5, 0.5, () =>
{
toView.Layer.Transform = GetRotation(0f);
});
};
UIView.AnimateKeyframes(duration, 0.0, UIViewKeyframeAnimationOptions.CalculationModeLinear, animations, (finished) =>
{
transitionContext.CompleteTransition(!transitionContext.TransitionWasCancelled);
});
}
private void ExecuteReverseAnimation(IUIViewControllerContextTransitioning transitionContext,
UIViewController fromViewController, UIViewController toViewController,
UIView fromView, UIView toView)
{
UIView containerView = transitionContext.ContainerView;
// positions the to- view behind the from- view
toView.Frame = containerView.Frame;
var scale = CATransform3D.Identity;
toView.Layer.Transform = scale.Scale(0.6f, 0.6f, 1f);
toView.Alpha = 0.6f;
containerView.InsertSubviewAbove(toView, fromView);
CGRect frameOffScreen = containerView.Frame;
frameOffScreen.Y = containerView.Frame.Height;
CATransform3D transform = GetFirstTransform();
Action animations = () => {
// push the from- view off the bottom of the screen
UIView.AddKeyframeWithRelativeStartTime(0.0, 0.5, () => {
fromView.Frame = frameOffScreen;
});
// animate the to- view into place
UIView.AddKeyframeWithRelativeStartTime(0.35, 0.35, () => {
toView.Layer.Transform = transform;
toView.Alpha = 1f;
});
UIView.AddKeyframeWithRelativeStartTime(0.75, 0.25, () => {
toView.Layer.Transform = CATransform3D.Identity;
});
};
UIView.AnimateKeyframes(Duration, 0.0, UIViewKeyframeAnimationOptions.CalculationModeCubic, animations, (finished) => {
if (transitionContext.TransitionWasCancelled)
{
toView.Layer.Transform = CATransform3D.Identity;
toView.Alpha = 1f;
}
transitionContext.CompleteTransition(!transitionContext.TransitionWasCancelled);
});
}
private void ExecuteForwardAnimation(IUIViewControllerContextTransitioning transitionContext,
UIViewController fromViewController, UIViewController toViewController,
UIView fromView, UIView toView)
{
UIView containerView = transitionContext.ContainerView;
// positions the to- view off the bottom of the sceen
CGRect offScreenFrame = containerView.Frame;
offScreenFrame.Y = containerView.Frame.Height;
toView.Frame = offScreenFrame;
containerView.InsertSubviewAbove(toView, fromView);
CATransform3D firstTransform = GetFirstTransform();
CATransform3D secondTrsnaform = GetSecondTransform(fromView);
Action animations = () => {
UIView.AddKeyframeWithRelativeStartTime(0.0, 0.4, () => {
fromView.Layer.Transform = firstTransform;
fromView.Alpha = 0.6f;
});
UIView.AddKeyframeWithRelativeStartTime(0.2, 0.4, () => {
fromView.Layer.Transform = secondTrsnaform;
});
UIView.AddKeyframeWithRelativeStartTime(0.6, 0.2, () => {
toView.Frame = new CGRect(toView.Frame.X, containerView.Frame.Y - 30f,
toView.Frame.Width, toView.Frame.Height);
});
UIView.AddKeyframeWithRelativeStartTime(0.8, 0.2, () => {
toView.Frame = containerView.Frame;
});
};
UIView.AnimateKeyframes(Duration, 0.0, UIViewKeyframeAnimationOptions.CalculationModeCubic, animations, (finished) => {
transitionContext.CompleteTransition(!transitionContext.TransitionWasCancelled);
});
}
void StartAnimations()
{
// var options = UIViewKeyframeAnimationOptions.Repeat | UIViewKeyframeAnimationOptions.CalculationModeCubicPaced UIViewKeyframeAnimationOptions = [.curveEaseInOut, .repeat]
UIViewKeyframeAnimationOptions options = UIViewKeyframeAnimationOptions.Repeat | (UIViewKeyframeAnimationOptions)UIViewAnimationOptions.CurveEaseInOut;
UIView.AnimateKeyframes(AniRippleStartScale + AniRippleEndScale, 0, options, () =>
{
UIView.AddKeyframeWithRelativeStartTime(0, AniRippleStartDuration, () =>
{
_targetRippleView.Alpha = AniRippleAlpha;
_targetHolderView.Transform = CGAffineTransform.MakeScale(AniRippleEndScale, AniRippleEndScale);
_targetRippleView.Transform = CGAffineTransform.MakeScale(AniRippleEndScale, AniRippleEndScale);
});
UIView.AddKeyframeWithRelativeStartTime(AniRippleStartDuration, AniRippleEndDuration, () =>
{
_targetHolderView.Transform = CGAffineTransform.MakeIdentity();
_targetRippleView.Alpha = 0;
_targetRippleView.Transform = CGAffineTransform.MakeScale(AniRippleStartScale, AniRippleStartScale);
});
}, success => { });
}
void AnimateViewWithKeyframes()
{
var initialTransform = imageView.Transform;
var initialCeneter = imageView.Center;
// can now use keyframes directly on UIView without needing to drop directly into Core Animation
UIView.AnimateKeyframes(2.0, 0, UIViewKeyframeAnimationOptions.Autoreverse, () => {
UIView.AddKeyframeWithRelativeStartTime(0.0, 0.5, () => {
imageView.Center = new CGPoint(200, 200);
});
UIView.AddKeyframeWithRelativeStartTime(0.5, 0.5, () => {
imageView.Transform = CGAffineTransform.MakeRotation((float)Math.PI / 2);
});
}, (finished) => {
imageView.Center = initialCeneter;
imageView.Transform = initialTransform;
AnimateWithSpring();
});
}
public void CompleteShowcase(bool animated = true, bool skipped = false)
{
UndoStatusBar(animated);
ShowCaseWillDismiss?.Invoke(skipped);
if (animated)
{
_targetRippleView.RemoveFromSuperview();
UIView.AnimateKeyframes(AniGoOutDuration, 0, UIViewKeyframeAnimationOptions.CalculationModeLinear,
() =>
{
UIView.AddKeyframeWithRelativeStartTime(0, 3 / 5f, () =>
{
_targetHolderView.Transform = CGAffineTransform.MakeScale(0.4f, 0.4f);
_backgroundView.Transform = CGAffineTransform.MakeScale(1.3f, 1.3f);
_backgroundView.Alpha = 0;
});
UIView.AddKeyframeWithRelativeStartTime(3 / 5f, 2 / 5f, () => { Alpha = 0; });
},
success =>
{
if (success)
{
RecycleSubviews();
// Remove it from current screen
RemoveFromSuperview();
ShowCaseDidDismiss?.Invoke(skipped);
}
});
}
else
{
// Recycle subviews
RecycleSubviews();
// Remove it from current screen
RemoveFromSuperview();
ShowCaseDidDismiss?.Invoke(skipped);
}
}
public static void StartAnimation(this MaterialShowcase materialShowcase)
{
UIViewKeyframeAnimationOptions options = UIViewKeyframeAnimationOptions.Repeat | 0 << 16;
UIView.AnimateKeyframes(1, 0, options, () =>
{
UIView.AddKeyframeWithRelativeStartTime(0, .5f, () =>
{
materialShowcase.targetRippleView.Alpha = MaterialShowcase.AniRippleAlpha;
materialShowcase.targetHolderView.Transform = CGAffineTransform.MakeScale(1.1f, 1.1f);
materialShowcase.targetRippleView.Transform = CGAffineTransform.MakeScale(1.1f, 1.1f);
});
UIView.AddKeyframeWithRelativeStartTime(.5f, .5f, () =>
{
materialShowcase.targetHolderView.Transform = CGAffineTransform.MakeIdentity();
materialShowcase.targetRippleView.Alpha = 0;
materialShowcase.targetRippleView.Transform = CGAffineTransform.MakeScale(materialShowcase.aniRippleScale, materialShowcase.aniRippleScale);
});
}, (completion) =>
{
Console.WriteLine("ok");
});
}
private void SetStopTimeHidden(bool hidden, bool animate)
{
if (stopTimeHidden == hidden)
{
return;
}
stopTimeHidden = hidden;
if (!animate)
{
ViewLayout = hidden ? LayoutVariant.StartOnly : LayoutVariant.BothCenterAll;
}
else if (hidden)
{
ViewLayout = LayoutVariant.BothCenterAll;
stopDateTimeButton.Alpha = 1;
arrowImageView.Alpha = 1;
LayoutIfNeeded();
UIView.AnimateKeyframes(
0.4, 0,
UIViewKeyframeAnimationOptions.CalculationModeCubic | UIViewKeyframeAnimationOptions.BeginFromCurrentState,
delegate {
UIView.AddKeyframeWithRelativeStartTime(0, 1, delegate {
ViewLayout = LayoutVariant.BothCenterStart;
LayoutIfNeeded();
});
UIView.AddKeyframeWithRelativeStartTime(0, 0.8, delegate {
stopDateTimeButton.Alpha = 0;
arrowImageView.Alpha = 0;
});
},
delegate {
if (ViewLayout == LayoutVariant.BothCenterStart)
{
ViewLayout = LayoutVariant.StartOnly;
LayoutIfNeeded();
}
});
}
else
{
ViewLayout = LayoutVariant.BothCenterStart;
stopDateTimeButton.Alpha = 0;
arrowImageView.Alpha = 0;
LayoutIfNeeded();
UIView.AnimateKeyframes(
0.4, 0,
UIViewKeyframeAnimationOptions.CalculationModeCubic | UIViewKeyframeAnimationOptions.BeginFromCurrentState,
delegate {
UIView.AddKeyframeWithRelativeStartTime(0, 1, delegate {
ViewLayout = LayoutVariant.BothCenterAll;
LayoutIfNeeded();
});
UIView.AddKeyframeWithRelativeStartTime(0.2, 1, delegate {
stopDateTimeButton.Alpha = 1;
arrowImageView.Alpha = 1;
});
},
delegate {
});
}
}
public override void AnimateTransition(IUIViewControllerContextTransitioning transitionContext,
UIViewController fromViewController, UIViewController toViewController,
UIView fromView, UIView toView)
{
UIView containerView = transitionContext.ContainerView;
containerView.AddSubview(toView);
containerView.SendSubviewToBack(toView);
var transform = CATransform3D.Identity;
transform.m34 = -0.002f;
containerView.Layer.SublayerTransform = transform;
var initialFrame = transitionContext.GetInitialFrameForViewController(fromViewController);
fromView.Frame = initialFrame;
toView.Frame = initialFrame;
List <UIView> toViewSnapshots = CreateSnapshots(toView, true);
UIView flippedSectionOfToView = toViewSnapshots [Reverse ? 0 : 1];
List <UIView> fromViewSnapshots = CreateSnapshots(fromView, false);
UIView flippedSectionOfFromView = fromViewSnapshots [Reverse ? 1 : 0];
flippedSectionOfFromView = AddShadowToView(flippedSectionOfFromView, !Reverse);
UIView flippedSectionOfFromViewShadow = flippedSectionOfFromView.Subviews [1];
flippedSectionOfFromViewShadow.Alpha = 0f;
flippedSectionOfToView = AddShadowToView(flippedSectionOfToView, Reverse);
UIView flippedSectionOfToViewShadow = flippedSectionOfToView.Subviews [1];
flippedSectionOfToViewShadow.Alpha = 1f;
// change the anchor point so that the view rotate around the correct edge
UpdateAnchorPointAndOffset(new CGPoint(Reverse ? 0f : 1f, 0.5f), flippedSectionOfFromView);
UpdateAnchorPointAndOffset(new CGPoint(Reverse ? 1f : 0f, 0.5f), flippedSectionOfToView);
flippedSectionOfToView.Layer.Transform = Rotate(Reverse ? (float)Math.PI / 2 : -(float)Math.PI / 2);
double duration = TransitionDuration(transitionContext);
Action animations = () => {
UIView.AddKeyframeWithRelativeStartTime(0.0, 0.5, () => {
flippedSectionOfFromView.Layer.Transform = Rotate(Reverse ? -(float)Math.PI / 2 : (float)Math.PI / 2);
flippedSectionOfFromViewShadow.Alpha = 1f;
});
UIView.AddKeyframeWithRelativeStartTime(0.5, 0.5, () => {
flippedSectionOfToView.Layer.Transform = Rotate(Reverse ? 0.001f : -0.001f);
flippedSectionOfToViewShadow.Alpha = 0f;
});
};
UIView.AnimateKeyframes(duration, 0.0, UIViewKeyframeAnimationOptions.CalculationModeLinear, animations, (finished) => {
if (transitionContext.TransitionWasCancelled)
{
RemoveOtherViews(fromView);
}
else
{
RemoveOtherViews(toView);
}
transitionContext.CompleteTransition(!transitionContext.TransitionWasCancelled);
});
}
public override void AnimateTransition(IUIViewControllerContextTransitioning transitionContext)
{
var fromVC = (GarlandViewController)transitionContext.GetViewControllerForKey(UITransitionContext.FromViewControllerKey);
var toVC = (GarlandViewController)transitionContext.GetViewControllerForKey(UITransitionContext.ToViewControllerKey);
var fromHeaderSnapshot = fromVC.HeaderView.SnapshotView(true);
if (fromHeaderSnapshot == null)
{
transitionContext.CompleteTransition(false); return;
}
var fromCollection = fromVC.Collection;
var toCollection = toVC.Collection;
var containerView = transitionContext.ContainerView;
containerView.Frame = fromVC.View.Frame;
containerView.AddSubview(toVC.View);
toVC.View.Frame = UIScreen.MainScreen.Bounds;
toVC.View.LayoutSubviews();
var toHeaderSnapshot = toVC.HeaderView.SnapshotView(true);
var rightFakeHeaderSnapshot = toVC.RightFakeHeader.SnapshotView(true);
var leftFakeHeaderSnapshot = toVC.LeftFakeHeader.SnapshotView(true);
if (toHeaderSnapshot == null || rightFakeHeaderSnapshot == null || leftFakeHeaderSnapshot == null)
{
transitionContext.CompleteTransition(false); return;
}
var headerStartFrame = fromVC.View.ConvertRectToView(fromVC.HeaderView.Frame, containerView);
var headerFinalFrame = CreateRect(headerStartFrame, toHeaderSnapshot.Frame.Size);
//generate & configure cells transition views
var visibleFromSnapshots = new List <UIView>();
var overlappedCells = new List <UIView>();
var convertedFromCellCoords = new List <CGPoint>();
var cellSize = new List <CGSize>();
foreach (var cell in fromCollection.VisibleCells)
{
var cellSnap = cell.SnapshotView(true);
if (cellSnap == null)
{
continue;
}
var convertedCoord = fromCollection.ConvertPointToView(new CGPoint(cell.Frame.X, cell.Frame.Y), null); //NULL HERE
cellSnap.Frame = new CGRect(convertedCoord.X, convertedCoord.Y, cell.Frame.Width, cell.Frame.Height);
cellSize.Add(new CGSize(cell.Frame.Width, cell.Frame.Height));
if (convertedCoord.Y < headerStartFrame.GetMinY())
{
cellSnap.Alpha = 0;
}
else if (convertedCoord.Y < headerStartFrame.GetMaxY())
{
overlappedCells.Add(cellSnap);
}
var config = GarlandConfig.Instance;
cellSnap.Layer.CornerRadius = config.CardRadius;
cellSnap.Layer.ShadowOffset = config.CardShadowOffset;
cellSnap.Layer.ShadowColor = config.CardShadowColor.CGColor;
cellSnap.Layer.ShadowOpacity = config.CardShadowOpacity;
cellSnap.Layer.ShadowRadius = config.CardShadowRadius;
visibleFromSnapshots.Add(cellSnap);
containerView.AddSubview(cellSnap);
}
var visibleToSnapshots = new List <UIView>();
foreach (var cell in toCollection.VisibleCells)
{
var cellSnap = cell.SnapshotView(true);
if (cellSnap == null)
{
continue;
}
var convertedCoord = toCollection.ConvertPointToView(new CGPoint(cell.Frame.X, cell.Frame.Y), null); //.. AND HERE
convertedFromCellCoords.Add(convertedCoord);
cellSnap.Frame = new CGRect(new CGPoint(cellSnap.Frame.X, cellSnap.Frame.Y), new CGSize(cellSnap.Frame.Width / 3, cellSnap.Frame.Height / 2));
var finalX = this.finalFromXFrame;
if (finalX == UIScreen.MainScreen.Bounds.Width)
{
finalX += cellSnap.Frame.Width;
}
var newPoint = new CGPoint(UIScreen.MainScreen.Bounds.Width - finalX, convertedCoord.Y + cellSnap.Frame.Height / 2);
cellSnap.Frame = new CGRect(newPoint, cellSnap.Frame.Size);
cellSnap.Alpha = 0.2f;
var config = GarlandConfig.Instance;
cellSnap.Layer.CornerRadius = config.CardRadius;
cellSnap.Layer.ShadowOffset = config.CardShadowOffset;
cellSnap.Layer.ShadowColor = config.CardShadowColor.CGColor;
cellSnap.Layer.ShadowOpacity = config.CardShadowOpacity;
cellSnap.Layer.ShadowRadius = config.CardShadowRadius;
visibleToSnapshots.Add(cellSnap);
containerView.AddSubview(cellSnap);
}
//configure headers
fromHeaderSnapshot.Frame = headerStartFrame;
var configuration = GarlandConfig.Instance;
fromHeaderSnapshot.Layer.MasksToBounds = false;
fromHeaderSnapshot.Layer.CornerRadius = configuration.CardRadius;
fromHeaderSnapshot.Layer.ShadowOffset = configuration.CardShadowOffset;
fromHeaderSnapshot.Layer.ShadowColor = configuration.CardShadowColor.CGColor;
fromHeaderSnapshot.Layer.ShadowOpacity = configuration.CardShadowOpacity;
fromHeaderSnapshot.Layer.ShadowRadius = configuration.CardShadowRadius;
var toFakeHeader = finalFromXFrame == 0 ? toVC.RightFakeHeader : toVC.LeftFakeHeader;
var fromFakeHeader = finalFromXFrame == 0 ? toVC.LeftFakeHeader : toVC.RightFakeHeader;
var toFakeHeaderSnapshot = finalFromXFrame == 0 ? rightFakeHeaderSnapshot : leftFakeHeaderSnapshot;
var fromFakeHeaderSnapshot = finalFromXFrame == 0 ? leftFakeHeaderSnapshot : rightFakeHeaderSnapshot;
var headerToFrame = toVC.View.ConvertRectToView(toFakeHeader.Frame, containerView);
var headerFromFrame = toVC.View.ConvertRectToView(fromFakeHeader.Frame, containerView);
toFakeHeaderSnapshot.Frame = headerToFrame;
fromFakeHeaderSnapshot.Frame = headerStartFrame;
toHeaderSnapshot.Frame = headerToFrame;
toHeaderSnapshot.Alpha = 0;
containerView.AddSubview(toFakeHeaderSnapshot);
containerView.AddSubview(fromFakeHeaderSnapshot);
containerView.AddSubview(toHeaderSnapshot);
containerView.AddSubview(fromHeaderSnapshot);
//hide origin views
//fromFakeHeaderSnapshot.alpha = 0
toFakeHeader.Alpha = 0;
toVC.HeaderView.Alpha = 0;
toVC.Collection.Alpha = 0;
fromVC.HeaderView.Alpha = 0;
fromVC.Collection.Alpha = 0;
AnimationHelper.PerspectiveTransformForContainerView(containerView);
var duration = TransitionDuration(transitionContext);
UIView.AnimateKeyframes(duration, 0, UIViewKeyframeAnimationOptions.CalculationModeLinear, () =>
{
UIView.AddKeyframeWithRelativeStartTime(0.0, 0.25f, () =>
{
toHeaderSnapshot.Alpha = 1;
});
UIView.AddKeyframeWithRelativeStartTime(0.1, 0.3f, () =>
{
overlappedCells.ForEach((obj) => obj.Alpha = 0);
});
UIView.AddKeyframeWithRelativeStartTime(0, 1f, () =>
{
fromHeaderSnapshot.Frame = headerFromFrame;
fromFakeHeaderSnapshot.Frame = headerFromFrame;
toHeaderSnapshot.Frame = headerFinalFrame;
toFakeHeaderSnapshot.Frame = headerFinalFrame;
fromHeaderSnapshot.Alpha = 0.2f;
toHeaderSnapshot.Alpha = 1;
fromFakeHeader.Transform = CGAffineTransform.MakeTranslation(headerStartFrame.GetMidX() - headerToFrame.GetMidX(), 0);
for (var i = 0; i < visibleToSnapshots.Count; i++)
{
var snapshot = visibleToSnapshots[i];
snapshot.Frame = new CGRect(convertedFromCellCoords[i], new CGSize(cellSize[i].Width, cellSize[i].Height));
snapshot.Alpha = 1.0f;
}
foreach (var snapshot in visibleFromSnapshots)
{
snapshot.Frame = new CGRect(new CGPoint(snapshot.Frame.X, snapshot.Frame.Y),
new CGSize(snapshot.Frame.Width / 3, snapshot.Frame.Height / 2));
var finalX = this.finalFromXFrame;
if (finalX == UIScreen.MainScreen.Bounds.Width)
{
finalX -= snapshot.Frame.Width;
}
snapshot.Frame = new CGRect(new CGPoint(finalX, snapshot.Frame.Y + snapshot.Frame.Height / 2),
snapshot.Frame.Size);
snapshot.Alpha = 0;
}
});
UIView.AddKeyframeWithRelativeStartTime(0.75, 0.25f, () =>
{
fromHeaderSnapshot.Alpha = 0;
});
UIView.AddKeyframeWithRelativeStartTime(0.9, 0.1f, () =>
{
toFakeHeader.Alpha = 1;
});
}, (bool finished) =>
{
fromFakeHeader.Transform = CGAffineTransform.MakeIdentity();
toVC.Collection.Alpha = 1.0f;
toVC.HeaderView.Alpha = 1;
toVC.LeftFakeHeader.Alpha = 1;
toVC.RightFakeHeader.Alpha = 1;
foreach (var snap in visibleFromSnapshots)
{
snap.RemoveFromSuperview();
}
foreach (var snap in visibleToSnapshots)
{
snap.RemoveFromSuperview();
}
leftFakeHeaderSnapshot.RemoveFromSuperview();
rightFakeHeaderSnapshot.RemoveFromSuperview();
fromHeaderSnapshot.RemoveFromSuperview();
toHeaderSnapshot.RemoveFromSuperview();
fromVC.View.RemoveFromSuperview();
transitionContext.CompleteTransition(!transitionContext.TransitionWasCancelled);
});
}
void AnimatePinStreaming(List <UILabel> images)
{
animationRunning = true;
if (images.Count == 0)
{
animationRunning = false;
return;
}
float duration = .8f;
UIViewAnimationOptions opts = UIViewAnimationOptions.CurveEaseOut | UIViewAnimationOptions.Repeat;
var image1 = images[0];
var rand = new Random();
//var anim1 = new CoreAnimation.CAAnimation();
UIView.AnimateKeyframes(duration * images.Count,
delay: 0,
options: UIViewKeyframeAnimationOptions.Repeat,
animations: () =>
{
UIView.AddKeyframeWithRelativeStartTime(0, 0.15, () =>
{
image1.Alpha = 1;
});
UIView.AddKeyframeWithRelativeStartTime(0, 0.25, () =>
{
image1.Center = new CGPoint(image1.Center.X, image1.Center.Y - (1 + rand.NextDouble() % 0.5) * 60);
});
UIView.AddKeyframeWithRelativeStartTime(0, 0.08, () =>
{
});
UIView.AddKeyframeWithRelativeStartTime(0.225, 0.25, () =>
{
image1.Alpha = 0;
});
if (images.Count > 1)
{
var image2 = images[1];
UIView.AddKeyframeWithRelativeStartTime(0.25, 0.15, () =>
{
image2.Alpha = 1;
});
UIView.AddKeyframeWithRelativeStartTime(0.25, 0.25, () =>
{
image2.Center = new CGPoint(image2.Center.X, image2.Center.Y - (1 + rand.NextDouble() % 0.5) * 60);
});
UIView.AddKeyframeWithRelativeStartTime(0.475, 0.25, () =>
{
image2.Alpha = 0;
});
}
if (images.Count > 2)
{
var image3 = images[2];
UIView.AddKeyframeWithRelativeStartTime(0.5, 0.15, () =>
{
image3.Alpha = 1;
});
UIView.AddKeyframeWithRelativeStartTime(0.5, 0.25, () =>
{
image3.Center = new CGPoint(image3.Center.X, image3.Center.Y - (1 + rand.NextDouble() % 0.5) * 60);
});
UIView.AddKeyframeWithRelativeStartTime(0.725, 0.25, () =>
{
image3.Alpha = 0;
});
}
if (images.Count > 3)
{
var image4 = images[3];
UIView.AddKeyframeWithRelativeStartTime(0.75, 0.15, () =>
{
image4.Alpha = 1;
});
UIView.AddKeyframeWithRelativeStartTime(0.75, 0.25, () =>
{
image4.Center = new CGPoint(image4.Center.X, image4.Center.Y - (1 + rand.NextDouble() % 0.5) * 60);
});
UIView.AddKeyframeWithRelativeStartTime(0.75, 0.25, () =>
{
image4.Alpha = 0;
});
}
}, completion: (i) =>
{
});
animationRunning = false;
}