364 lines
13 KiB
C#
364 lines
13 KiB
C#
//**********************************************//
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//作者:#何健#
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//日期:#2016.10.09#
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//简述:#ScrollView优化，使用一定数量子项实现大量数据循环加载#
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//*********************************************//
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using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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using System.Text;
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namespace Thousandto.Plugins.Common
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{
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/// <summary>
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/// 类BackPackItem说明
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/// </summary>
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[RequireComponent(typeof(UIGrid))]
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public class UILoopScrollViewBase : MonoCacheBase
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{
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#region Members
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/// <summary>
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/// 存储物件列表
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/// </summary>
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private List<GameObject> m_itemList = new List<GameObject>();
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/// <summary>
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/// 起始下标
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/// </summary>
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private int _startIndex = 1;
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/// <summary>
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/// 最大长度
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/// </summary>
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private int _maxCount;
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/// <summary>
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/// 父ScrollView
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/// </summary>
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public UIScrollView _scrollView;
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/// <summary>
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/// grid
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/// </summary>
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public UIGrid _grid;
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/// <summary>
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/// templateItem
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/// </summary>
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public GameObject _templateItem;
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/// <summary>
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/// 物件刷新代理事件
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/// </summary>
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/// <param name="go"></param>
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public delegate void OnItemChange(Transform obj, string name, bool isClear);
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private OnItemChange m_pItemChangeCallBack;
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private Vector2 _scrollViewPos = new Vector2(0, 0);
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private Vector3 lastPos;
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private bool _isRecodePos = false;
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#endregion
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#region 回调处理
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/// <summary>
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/// 设置代理
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/// </summary>
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/// <param name="_onItemChange"></param>
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public void SetDelegate(OnItemChange _onItemChange)
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{
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m_pItemChangeCallBack = _onItemChange;
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}
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/// <summary>
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/// 物件刷新代理事件
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/// </summary>
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/// <param name="go"></param>
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private void OnItemChangeMsg(Transform obj,string name, bool isClear)
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{
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if (m_pItemChangeCallBack != null)
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{
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m_pItemChangeCallBack(obj, name, isClear);
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}
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}
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#endregion
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/// <summary>
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/// 初始化表
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/// </summary>
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public void Init(int maxCount, GameObject templateItem = null, int waitCount = 1, bool isResetScrool = true)
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{
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_isRecodePos = false;
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_maxCount = maxCount;
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if (isResetScrool)
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{
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// 如果传入有控件则以传入的为模板如果没有则查找grid下面第一个子控件
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_grid = transform.GetComponent<UIGrid>();
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_scrollView = transform.parent.GetComponent<UIScrollView>();
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_grid.gameObject.SetActive(true);
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var _num = _maxCount % _grid.maxPerLine;
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if (_num != 0)
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{
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_maxCount = _maxCount + _grid.maxPerLine - _num;
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}
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if (templateItem)
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{
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_templateItem = templateItem;
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}
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else
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{
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_templateItem = _grid.transform.GetChild(0).gameObject;
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}
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try
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{
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StartCoroutine(Respositon(waitCount));
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}
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finally
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{
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}
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}
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else
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{
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//当前显示出来的第一个格子，在grid数据中的index
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var childCount = _grid.transform.childCount;
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int index = Mathf.FloorToInt((_maxCount - childCount) / _grid.maxPerLine);
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for (int i = index * _grid.maxPerLine; i < childCount + index * _grid.maxPerLine; i++)
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{
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if (i >= _maxCount)
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return;
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FillItem(i - index * _grid.maxPerLine + _startIndex, i + _startIndex, i == childCount + index * _grid.maxPerLine - 1);
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}
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}
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}
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private IEnumerator Respositon(int waitCount = 0)
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{
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InitGird();
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_grid.Reposition();
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yield return waitCount;
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_scrollView.ResetPosition();
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_isRecodePos = true;
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}
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private void InitGird()
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{
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m_itemList.Clear();
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// 将现有的子项添加到容器
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for (int i = 0; i < _grid.transform.childCount; i++)
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{
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GameObject go = _grid.transform.GetChild(i).gameObject;
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//go.SetActive(false);
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m_itemList.Add(go);
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}
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int fillCount = 0; //当前scrollView被填满的格子数
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int lastIndex = 0; //上次显示出来的第一个格子，在grid数据中的index
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var _indexDis = 0f;
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UIPanel panel = _scrollView.GetComponent<UIPanel>();
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if (_scrollView.movement == UIScrollView.Movement.Vertical)
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{
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fillCount = Mathf.CeilToInt(panel.height / _grid.cellHeight);
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fillCount = fillCount * _grid.maxPerLine;
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_indexDis = _grid.cellHeight;
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}
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else if (_scrollView.movement == UIScrollView.Movement.Horizontal)
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{
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fillCount = Mathf.CeilToInt(panel.width / _grid.cellWidth);
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_indexDis = _grid.cellWidth;
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}
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//if (_maxCount < fillCount + _grid.maxPerLine)
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// _maxCount = fillCount + _grid.maxPerLine;
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int childCount = _maxCount;
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// 如果item数量大于填满显示面板的数量做优化
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if (childCount > fillCount + _grid.maxPerLine)
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{
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childCount = fillCount + _grid.maxPerLine;
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// 拖拽刷新面板
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panel.onClipMove = (uiPanel) => {
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Vector3 delata = lastPos - panel.transform.localPosition;
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float distance = System.Math.Abs(delata.y) > 0.5 ? delata.y : delata.x;
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// 满的时候向上滑不管它
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if ((distance > 0 && _scrollView.movement == UIScrollView.Movement.Vertical) || (distance < 0 && _scrollView.movement == UIScrollView.Movement.Horizontal))
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return;
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if (distance < 0)
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distance = -distance;
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//当前显示出来的第一个格子，在grid数据中的index
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int index = Mathf.FloorToInt(distance / _indexDis);
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// 拖拽不满一个单元格
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if (index == lastIndex) return;
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// 拉到底了
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if (index + childCount > _maxCount) {
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for (int i = 1; i <= _grid.transform.childCount; i++)
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{
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if (i >= _maxCount)
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return;
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var _newKey = _maxCount >= _grid.transform.childCount ? _maxCount - _grid.transform.childCount + i : i;
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FillItem(i, _newKey, i == _grid.transform.childCount);
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}
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return;
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}
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lastIndex = index;
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// 重刷
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if ((index - 1) * _grid.maxPerLine + childCount < _maxCount)
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{
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for (int i = index * _grid.maxPerLine; i < childCount + index * _grid.maxPerLine; i++)
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{
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if (i >= _maxCount)
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return;
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FillItem(i - index * _grid.maxPerLine + _startIndex, i + _startIndex, i == childCount + index * _grid.maxPerLine - 1);
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}
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}
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};
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}
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_scrollView.onStoppedMoving = OnDragFinished;
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// 添加能填满UI数量的子项
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var allCount = fillCount + _grid.maxPerLine;
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for (int i = 0; i < allCount; i++)
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{
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bool isClear = false;
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if (i == 0)
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{
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isClear = true;
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}
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if (i >= _maxCount)
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{
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break;
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}
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GameObject go = null;
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if (i < m_itemList.Count)
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{
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go = m_itemList[i];
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}
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else
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{
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go = NGUITools.AddChild(_grid.gameObject, _templateItem);
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m_itemList.Add(go);
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}
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go.SetActive(true);
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FillItem(i + _startIndex, i + _startIndex, isClear);
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//if (m_itemList.Count > i)
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//{
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// FillItem(i + _startIndex, i + _startIndex, isClear);
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// continue;
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//}
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//GameObject go = NGUITools.AddChild(_grid.gameObject, _templateItem);
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//go.SetActive(true);
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//m_itemList.Add(go);
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//FillItem(i + _startIndex, i + _startIndex, isClear);
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}
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for (int i = allCount; i < m_itemList.Count; i++)
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{
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m_itemList[i].SetActive(false);
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}
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lastPos = panel.transform.localPosition;
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}
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public void OnDragFinished()
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{
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if (_scrollView.movement == UIScrollView.Movement.Vertical)
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{
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int indexY = (int)_scrollViewPos.y;
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if (indexY + 10 > (int)_scrollView.transform.localPosition.y && indexY - 10 < (int)_scrollView.transform.localPosition.y)
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{
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for (int i = 0; i < _grid.transform.childCount; i++)
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{
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if (i >= _maxCount)
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return;
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FillItem(i + _startIndex, i + _startIndex, i == _grid.transform.childCount - 1);
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}
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}
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}
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else if(_scrollView.movement == UIScrollView.Movement.Horizontal)
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{
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int indexY = (int)_scrollViewPos.x;
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if (indexY + 10 > (int)_scrollView.transform.localPosition.x && indexY - 10 < (int)_scrollView.transform.localPosition.x)
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{
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for (int i = 0; i < _grid.transform.childCount; i++)
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{
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if (i >= _maxCount)
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return;
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FillItem(i + _startIndex, i + _startIndex, i == _grid.transform.childCount - 1);
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}
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}
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}
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}
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// 修改子项位置
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public void FillItem(int oldIndex, int index, bool isClear)
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{
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//Debug.Log("-----oldIndex=" + oldIndex + ",index = " + index + ", itemListCount=" + m_itemList.Count);
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int iListIndex = oldIndex - _startIndex;
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if (m_itemList.Count <= iListIndex)
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return;
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string oldKey = m_itemList[iListIndex].name;
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string newKey = index.ToString();
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m_itemList[iListIndex].name = newKey;
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if (_scrollView.movement == UIScrollView.Movement.Horizontal)// 如果是水平滑动，则只有一排
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{
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m_itemList[iListIndex].transform.localPosition = new Vector3(_grid.cellWidth * (index - 1), 0, 0);
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}
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else if (_scrollView.movement == UIScrollView.Movement.Vertical) // 纵向滑动时有可能有多列
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{
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int count = index / _grid.maxPerLine;
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int countLess = index % _grid.maxPerLine;
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if(countLess == 0)
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{
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countLess = _grid.maxPerLine - _startIndex;
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if(_startIndex != 0)
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{
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count -= 1;
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}
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}
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else
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{
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countLess -= _startIndex;
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}
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m_itemList[iListIndex].transform.localPosition = new Vector3(countLess * _grid.cellWidth, -_grid.cellHeight * count, 0);
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m_itemList[iListIndex].gameObject.SetActive(true);
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}
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OnItemChangeMsg(m_itemList[iListIndex].transform, newKey, isClear);
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}
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// 修改最大格子数
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public void OnSetMaxIndex(int max)
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{
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_maxCount = max;
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if(_grid != null)
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{
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var _num = _maxCount % _grid.maxPerLine;
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if (_num != 0)
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{
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_maxCount = _maxCount - _grid.maxPerLine + _num;
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}
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}
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}
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// 修改最大格子数
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public int OnGetMaxIndex()
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{
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return _maxCount;
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}
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//重置lastpos
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public void ResetPos()
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{
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lastPos = _scrollView.GetComponent<UIPanel>().transform.localPosition;
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}
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private void Update()
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{
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if (_isRecodePos)
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{
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_scrollViewPos = _scrollView.transform.localPosition;
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ResetPos();
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_isRecodePos = false;
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}
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}
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}
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}
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