void AnimateMenu(MenuState newMenuState, float initialVelocity = 0.7f)
{
var initialVelocityVector = new CGVector(initialVelocity, 0f);
var springParameters = GetSpringTimingParameters(initialVelocityVector);
var shouldMaximize = newMenuState == MenuState.Open;
menuAnimator = new UIViewPropertyAnimator(0, springParameters)
{
Interruptible = true,
};
menuAnimator.AddAnimations(() =>
{
menuViewController.View.Frame = new CGRect
{
Location = new CGPoint
{
X = MenuDestinationXFromState(newMenuState),
Y = 0f,
},
Size = menuViewController.View.Frame.Size,
};
menuViewController.SetPercentMaximized(shouldMaximize ? 1 : 0);
menuBackgroundView.Alpha = shouldMaximize ? 1 : 0;
});
menuAnimator.AddCompletion(pos => menuState = shouldMaximize ? MenuState.Open : MenuState.Closed);
menuAnimator.StartAnimation();
}
void Panned(NSObject r)
{
var recognizer = r as UIPanGestureRecognizer;
var touchPoint = recognizer.LocationInView(View);
switch (recognizer.State)
{
case UIGestureRecognizerState.Began:
originalTouchPoint = touchPoint;
break;
case UIGestureRecognizerState.Changed:
var offset = touchPoint.Y - originalTouchPoint.Y;
offset = offset > 0 ? NMath.Pow(offset, 0.7f) : -NMath.Pow(-offset, 0.7f);
rubberView.Transform = CGAffineTransform.MakeTranslation(0, offset);
break;
case UIGestureRecognizerState.Ended:
case UIGestureRecognizerState.Cancelled:
var timingParameters = UISpringTiming.MakeTimingParameters(damping: 0.6f, response: .3f);
var animator = new UIViewPropertyAnimator(duration: 0, parameters: timingParameters);
animator.AddAnimations(() => rubberView.Transform = CGAffineTransform.MakeIdentity());
animator.Interruptible = true;
animator.StartAnimation();
break;
default:
break;
}
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
imageView = new UIImageView(new CGRect(0, 100, 50, 50));
image = UIImage.FromFile("Sample.png");
imageView.Image = image;
imageView.Alpha = 0.25f;
View.AddSubview(imageView);
Action setCenterRight = () =>
{
var xpos = UIScreen.MainScreen.Bounds.Right - imageView.Frame.Width / 2;
var ypos = imageView.Center.Y;
imageView.Center = new CGPoint(xpos, ypos);
};
Action setCenterLeft = () =>
{
var xpos = UIScreen.MainScreen.Bounds.Left + imageView.Frame.Width / 2;
var ypos = imageView.Center.Y;
imageView.Center = new CGPoint(xpos, ypos);
};
Action setOpacity = () =>
{
imageView.Alpha = 1;
};
UIViewPropertyAnimator propertyAnimator = new UIViewPropertyAnimator(4, UIViewAnimationCurve.EaseInOut, setCenterRight);
propertyAnimator.AddAnimations(setOpacity);
Action <object> reversePosition = (o) =>
{
InvokeOnMainThread(() => {
propertyAnimator.AddAnimations(setCenterLeft);
});
};
TimerCallback abortPositionDelegate = new TimerCallback(reversePosition);
Timer abortPosition = new Timer(abortPositionDelegate, null, 3000, Timeout.Infinite);
propertyAnimator.StartAnimation();
}
void AnimateToRest()
{
var timingParameters = UISpringTiming.MakeTimingParameters(damping: 0.4f, response: 0.2f);
var animator = new UIViewPropertyAnimator(duration: 0, parameters: timingParameters);
animator.AddAnimations(() => {
Transform = CGAffineTransform.MakeScale(1, 1);
BackgroundColor = isOn ? onColor : offColor;
});
animator.Interruptible = true;
animator.StartAnimation();
}
public static void Animate(double duration, nfloat delay, CubicBezierCurve curve, Action changes, Action completion = null)
{
var propertyAnimator = new UIViewPropertyAnimator(duration, curve.ToCubicTimingParameters());
propertyAnimator.AddAnimations(changes, delay);
if (completion != null)
{
propertyAnimator.AddCompletion(_ => completion());
}
propertyAnimator.StartAnimation();
}
void AnimateView()
{
var timingParameters = UISpringTiming.MakeTimingParameters(damping: dampingRatio, response: frequencyResponse);
animator = new UIViewPropertyAnimator(duration: 0, parameters: timingParameters);
animator.AddAnimations(() => {
var translation = View.Bounds.Width - 2 * margin - 80;
springView.Transform = CGAffineTransform.MakeTranslation(translation, 0);
});
animator.AddCompletion((x) => {
springView.Transform = CGAffineTransform.MakeIdentity();
AnimateView();
});
animator.StartAnimation();
}
void AnimatePullout(PulloutState newPulloutState, float initialVelocity = 0.7f, bool launchKeyboard = false)
{
var initialVelocityVector = new CGVector(0f, initialVelocity);
var springParameters = GetSpringTimingParameters(initialVelocityVector);
var destinationY = PulloutDestinationYFromState(newPulloutState);
pulloutAnimator = new UIViewPropertyAnimator(0, springParameters)
{
Interruptible = true,
};
pulloutAnimator.AddAnimations(() =>
{
mainPulloutView.Frame = new CGRect
{
Location = new CGPoint
{
X = mainPulloutView.Frame.X,
Y = destinationY,
},
Size = mainPulloutView.Frame.Size,
};
mainPulloutView.SetPercentMaximized(newPulloutState == PulloutState.Maximized ? 1 : 0);
mainPulloutView.SetPercentMinimized(newPulloutState == PulloutState.Neutral || newPulloutState == PulloutState.Maximized ? 0 : 1);
pulloutBackgroundView.Alpha = newPulloutState == PulloutState.Maximized ? 1 : 0;
});
if (launchKeyboard)
{
mainPulloutView.LaunchKeyboard();
}
pulloutAnimator.AddCompletion(pos =>
{
pulloutState = newPulloutState;
mainPulloutView.PulloutDidFinishAnimating(newPulloutState);
});
pulloutAnimator.StartAnimation();
}
void Panned(NSObject r)
{
var recognizer = r as UIPanGestureRecognizer;
var touchPoint = recognizer.LocationInView(View);
var velocity = recognizer.VelocityInView(View);
switch (recognizer.State)
{
case UIGestureRecognizerState.Began:
originalTouchPoint = touchPoint;
break;
case UIGestureRecognizerState.Changed:
var offset = touchPoint.Y - originalTouchPoint.Y;
if (offset > 0)
{
offset = NMath.Pow(offset, 0.7f);
}
else if (offset < -verticalOffset * 2)
{
offset = -verticalOffset * 2 - NMath.Pow(-(offset + verticalOffset * 2f), 0.7f);
}
accelerationView.Transform = CGAffineTransform.MakeTranslation(0, offset);
TrackPause(velocity.Y, offset);
break;
case UIGestureRecognizerState.Ended:
case UIGestureRecognizerState.Cancelled:
var timingParameters = UISpringTiming.MakeTimingParameters(damping: 0.8f, response: 0.3f);
var animator = new UIViewPropertyAnimator(0, timingParameters);
animator.AddAnimations(() => {
accelerationView.Transform = CGAffineTransform.MakeIdentity();
pauseLabel.Alpha = 0;
});
animator.Interruptible = true;
animator.StartAnimation();
hasPaused = false;
break;
default:
break;
}
}
private void StartAnimationIfNeeded()
{
if (animator.Running)
{
return;
}
var timingParameters = UISpringTiming.MakeTimingParameters(damping: 1, response: 0.4f);
animator = new UIViewPropertyAnimator(0, timingParameters);
animator.AddAnimations(() => {
momentumView.Transform = isOpen ? closedTransform : CGAffineTransform.MakeIdentity();
});
animator.AddCompletion((position) => {
if (position == UIViewAnimatingPosition.End)
{
isOpen = !isOpen;
}
});
animator.StartAnimation();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
imageView = new UIImageView(new CGRect(0, 100, 50, 50));
image = UIImage.FromBundle("Default.png");
imageView.Image = image;
imageView.Alpha = 0.25f;
View.AddSubview(imageView);
Action setCenterRight = () =>
{
var xpos = UIScreen.MainScreen.Bounds.Right - imageView.Frame.Width / 2;
var ypos = imageView.Center.Y;
imageView.Center = new CGPoint(xpos, ypos);
};
Action setCenterLeft = () =>
{
var xpos = UIScreen.MainScreen.Bounds.Left + imageView.Frame.Width / 2;
var ypos = imageView.Center.Y;
imageView.Center = new CGPoint(xpos, ypos);
};
Action setOpacity = () =>
{
imageView.Alpha = 1;
};
UIViewPropertyAnimator propertyAnimator = new UIViewPropertyAnimator(4, UIViewAnimationCurve.EaseInOut, setCenterRight);
propertyAnimator.AddAnimations(setOpacity);
Action <object> reversePosition = (o) =>
{
InvokeOnMainThread(() =>
{
propertyAnimator.AddAnimations(setCenterLeft);
});
};
TimerCallback abortPositionDelegate = new TimerCallback(reversePosition);
Timer abortPosition = new Timer(abortPositionDelegate, null, 3000, Timeout.Infinite);
propertyAnimator.StartAnimation();
// Perform any additional setup after loading the view, typically from a nib.
/*layer = new CALayer();
* layer.Bounds = new CGRect(0, 0, 80, 80);
* layer.Position = new CGPoint(100, 100);
* layer.Contents = UIImage.FromBundle("Default.png").CGImage;
* layer.ContentsGravity = CALayer.GravityResizeAspectFill;
*
* View.Layer.AddSublayer(layer);
*
* /*UIImageView imageView= new UIImageView(new CGRect(50, 50, 57, 57));
* UIImage image = UIImage.FromBundle("Default.png");
* imageView.Image = image;
* View.AddSubview(imageView);
*
* CGPoint point = imageView.Center;
* UIView.Animate(2, 0, UIViewAnimationOptions.CurveEaseInOut | UIViewAnimationOptions.Autoreverse,
* () =>
* {
* imageView.Center = new CGPoint(UIScreen.MainScreen.Bounds.Right - imageView.Frame.Width / 2, imageView.Center.Y);
* },
* () =>
* {
* imageView.Center = point;
* }
* );*/
}