/// 
/// NGUI Enhance item example
/// 
public class MyNGUIEnhanceItem : EnhanceItem
{
    private UITexture mTexture;
    ......
    // Set the item "depth" 2d or 3d
    protected override void SetItemDepth(float depthCurveValue, int depthFactor, float itemCount)
    {
        if (mTexture.depth != (int)Mathf.Abs(depthCurveValue * depthFactor))
            mTexture.depth = (int)Mathf.Abs(depthCurveValue * depthFactor);
    }

    // Item is centered
    public override void SetSelectState(bool isCenter)
    {
        if (mTexture == null)
            mTexture = this.GetComponent();
        if (mTexture != null)
            mTexture.color = isCenter ? Color.white : Color.gray;
    }
    ......
}


///
/// UGUI Enhance item example
///
public class MyUGUIEnhanceItem : EnhanceItem
{
    private Button uButton;
    private RawImage rawImage;
    ......
    private void OnClickUGUIButton()
    {
        OnClickEnhanceItem();
    }

    // Set the item "depth" 2d or 3d
    protected override void SetItemDepth(float depthCurveValue, int depthFactor, float itemCount)
    {
        curDepth = (int)(depthCurveValue * itemCount);
        this.transform.SetSiblingIndex(curDepth);
    }

    public override void SetSelectState(bool isCenter)
    {
        if (rawImage == null)
            rawImage = GetComponent();
        rawImage.color = isCenter ? Color.white : Color.gray;
    }
    ......
}