com.unity.uiextensions/Scripts/Layout/FancyScrollView/ScrollRect/FancyScrollRectCell.cs

29 lines
1.1 KiB
C#
Raw Normal View History

2019-11-16 22:49:21 +08:00
/// Credit setchi (https://github.com/setchi)
/// Sourced from - https://github.com/setchi/FancyScrollView
namespace UnityEngine.UI.Extensions
{
public abstract class FancyScrollRectCell<TItemData, TContext> : FancyScrollViewCell<TItemData, TContext>
where TContext : class, IFancyScrollRectContext, new()
{
public override void UpdatePosition(float position)
{
var (scrollSize, reuseMargin) = Context.CalculateScrollSize();
var unclampedPosition = (Mathf.Lerp(0f, scrollSize, position) - reuseMargin) / (scrollSize - reuseMargin * 2f);
var start = 0.5f * scrollSize;
var end = -start;
UpdatePosition(unclampedPosition, Mathf.Lerp(start, end, position));
}
protected virtual void UpdatePosition(float position, float viewportPosition) { }
}
public abstract class FancyScrollRectCell<TItemData> : FancyScrollRectCell<TItemData, FancyScrollRectContext>
{
public sealed override void SetupContext(FancyScrollRectContext context) => base.SetupContext(context);
}
}