unity3d 扩展NGUI Tweener —— TweenTime

#region HeadComments
/* ========================================================================
* Copyright (C) 2015 Arthun
*
* 作    者：Arthun
* 文件名称：TweenTime
* 功    能：滚动时间
* 创建时间：2015/12/21 15:51:58
*
* =========================================================================
*/
#endregion

using UnityEngine;

[RequireComponent(typeof(UILabel))]
[AddComponentMenu("NGUI/Tween/Tween Time")]
public class TweenTime : UITweener
{
public float from = 1f;
public float to = 1f;

private bool mCached = false;
private UILabel mLable;

private void Cache()
{
mCached = true;
mLable = GetComponent<UILabel>();
}

public float value
{
get
{
if (!mCached) Cache();
return 0f;
}
set
{
if (!mCached) Cache();
if (mLable != null)
mLable.text = getTimeFormat(value);
}
}

protected override void OnUpdate(float factor, bool isFinished) { value = Mathf.Lerp(from, to, factor); }

public override void SetStartToCurrentValue() { from = value; }

public override void SetEndToCurrentValue() { to = value; }

private string getTimeFormat(float time)
{
if (time <= 0) return "00:00:00";

System.TimeSpan ts = new System.TimeSpan(0, 0, (int)(time));
return ts.Hours.ToString().PadLeft(2, '0') + ":" + ts.Minutes.ToString().PadLeft(2, '0') + ":" + ts.Seconds.ToString().PadLeft(2, '0');
}
}