GraffitiAnimatorControl

Enumerations #

Name	Values

This class exposes no enumerations.

Constants #

Name	Type	Value

This class exposes no constants.

Events #

Definition	Description

This class exposes no events.

Delegates #

Definition
AtKeyframe(currentKeyframe as GraffitiAnimatorKeyframe)
AnimationComplete()
AnimationProgress(animControl as GraffitiAnimatorControl, animOp as GraffitiAnimatorOperation, newValue as Double)

Methods #

Definition	Description
AddKeyframe(Name as String, waitTime as Integer = 0) as GraffitiAnimatorControl	Adds a new keyframe.
AddKeyframe(newKeyframe as GraffitiAnimatorKeyframe) as GraffitiAnimatorControl
AddKeyframe(waitTime as Integer = 0) as GraffitiAnimatorControl
AddOperation(animOp as GraffitiAnimatorOperation) as GraffitiAnimatorControl	Adds a new animation operation to the stack.
Constructor(Target as RectControl)	Instantiates a new instance of the class.
Move(newLeft as Double, newTop as Double, animationLength as Integer, easing as GraffitiAnimator.Easings) as GraffitiAnimatorControl	Moves the control to the specified position.
OnComplete(finishFunction as AnimationComplete)	Invokes the provided delegate when all animation has completed.
OnKeyframe(keyframeFunction as AtKeyframe)	Invokes the provided delegate when the animation encounters a keyframe.
OnProgress(changeFunction as AnimationProgress)	Invokes the provided delegate as animation operations progress.
Play(DestroyWhenComplete as Boolean = True)	Plays the provided animation stack, optionally destructs itself when complete.
Resize(newWidth as Double, newHeight as Double, animationLength as Integer, easing as GraffitiAnimator.Easings)	Resizes the RectControl using the specified values.
Shake(numberOfShakes as Integer = 5, deltaX as Integer = 5, deltaY as Integer = 0, animationLength as Integer = 800)	Causes the RectControl to shake violently along the X-axis.
Stop() as GraffitiAnimatorControl	Cancels all running animations and immediately applies the requested end values for those operations.

Properties #

Name	Type	Default Value	Description
ConstraintHeight	iOSLayoutConstraint	Nil	AutoLayout constraint to use when animating control’s height.
ConstraintLeft	iOSLayoutConstraint	Nil	AutoLayout constraint to use when animating control’s width.
ConstraintTop	iOSLayoutConstraint	Nil	AutoLayout constraint to use when animating control’s top.
ConstraintWidth	iOSLayoutConstraint	Nil	AutoLayout constraint to use when animating control’s width.
State	GraffitiAnimator.States	Idle	The current running state of the animator.
Target	RectControl	Nil	The UI element to be animated.

Examples #

Chaining #

This class was developed to make animation chaining simple for enthralling UI animations. Below is an example directly from the demo project that demonstrates how this is done. Me is a PushButton:

if animControl = nil then
  '// Setup constraints.
  var x as new iOSLayoutConstraint( me, iOSLayoutConstraint.AttributeTypes.Left, _
  iOSLayoutConstraint.RelationTypes.Equal, _
  self, iOSLayoutConstraint.AttributeTypes.Left, 1, me.Left, 1000 )
  x.Active = True
  
  var y as new iOSLayoutConstraint( me, iOSLayoutConstraint.AttributeTypes.Top, _
  iOSLayoutConstraint.RelationTypes.Equal, _
  self, iOSLayoutConstraint.AttributeTypes.Top, 1, 70, 1000 )
  y.Active = True
  
  var w as new iOSLayoutConstraint( me, iOSLayoutConstraint.AttributeTypes.Width, _
  iOSLayoutConstraint.RelationTypes.Equal, _
  nil, iOSLayoutConstraint.AttributeTypes.None, 1, me.Width, 1000 )
  w.Active = True
  
  var h as new iOSLayoutConstraint( me, iOSLayoutConstraint.AttributeTypes.Height, _
  iOSLayoutConstraint.RelationTypes.Equal, _
  nil, iOSLayoutConstraint.AttributeTypes.None, 1, me.Height, 1000 )
  h.Active = True
  
  self.AddConstraint( x )
  self.AddConstraint( y )
  self.AddConstraint( w )
  self.AddConstraint( h )
  
  animControl = new GraffitiAnimatorControl( me, x, y, w, h )
  call animControl.OnProgress( GraffitiAnimatorControl.AnimationProgress( WeakAddressOf bounceProgress ) )._
  OnKeyframe( GraffitiAnimatorControl.AtKeyframe( WeakAddressOf bounceKeyframe ) )._
  OnComplete( GraffitiAnimatorControl.AnimationComplete( WeakAddressOf bounceFinished ) )
end if

if animControl.State = GraffitiAnimator.States.Running then Return

animControl.constraintTop.Offset = 70

Call animControl._
AddOperation( new GraffitiAnimatorOperation( "textsize", me.FontSize, me.FontSize * 2, 1000, GraffitiAnimator.Easings.BounceOut ) )._
Move( me.Left, me.Top + 50, 1000, GraffitiAnimator.Easings.BounceOut )._
Resize( me.Width * 2, me.Height, 1000, GraffitiAnimator.Easings.ElasticOut )._
AddKeyframe( "MidPoint", 1000 )

call animControl.Play( True )

Notes #

Constraints #

In order for animations to function correctly, any constraints on the target object must be set to have any priority except Highest. GraffitiAnimator will modify the Offset of these constraints based on the time elapsed in the animation sequence.