829 lines
26 KiB
C#
829 lines
26 KiB
C#
|
// -----------------------------------------------------------------------
|
||
|
|
// <copyright file="ScrollView.cs" company="AillieoTech">
|
||
|
|
// Copyright (c) AillieoTech. All rights reserved.
|
||
|
|
// </copyright>
|
||
|
|
// -----------------------------------------------------------------------
|
||
|
|
|
||
|
|
namespace TapSDK.UI.AillieoTech
|
||
|
|
{
|
||
|
|
using System;
|
||
|
|
using System.Collections;
|
||
|
|
using System.Collections.Generic;
|
||
|
|
using UnityEngine;
|
||
|
|
using UnityEngine.Serialization;
|
||
|
|
using UnityEngine.UI;
|
||
|
|
|
||
|
|
[RequireComponent(typeof(RectTransform))]
|
||
|
|
[DisallowMultipleComponent]
|
||
|
|
public class ScrollView : ScrollRect
|
||
|
|
{
|
||
|
|
[Tooltip("默认item尺寸")]
|
||
|
|
public Vector2 defaultItemSize;
|
||
|
|
|
||
|
|
[Tooltip("item的模板")]
|
||
|
|
public RectTransform itemTemplate;
|
||
|
|
|
||
|
|
// 0001
|
||
|
|
protected const int flagScrollDirection = 1;
|
||
|
|
|
||
|
|
[SerializeField]
|
||
|
|
[FormerlySerializedAs("m_layoutType")]
|
||
|
|
protected ItemLayoutType layoutType = ItemLayoutType.Vertical;
|
||
|
|
|
||
|
|
// 只保存4个临界index
|
||
|
|
protected int[] criticalItemIndex = new int[4];
|
||
|
|
|
||
|
|
// callbacks for items
|
||
|
|
protected Action<int, RectTransform> updateFunc;
|
||
|
|
protected Func<int, Vector2> itemSizeFunc;
|
||
|
|
protected Func<int> itemCountFunc;
|
||
|
|
protected Func<int, RectTransform> itemGetFunc;
|
||
|
|
protected Action<RectTransform> itemRecycleFunc;
|
||
|
|
|
||
|
|
private readonly List<ScrollItemWithRect> managedItems = new List<ScrollItemWithRect>();
|
||
|
|
|
||
|
|
private Rect refRect;
|
||
|
|
|
||
|
|
// resource management
|
||
|
|
private SimpleObjPool<RectTransform> itemPool = null;
|
||
|
|
|
||
|
|
private int dataCount = 0;
|
||
|
|
|
||
|
|
[Tooltip("初始化时池内item数量")]
|
||
|
|
[SerializeField]
|
||
|
|
private int poolSize;
|
||
|
|
|
||
|
|
// status
|
||
|
|
private bool initialized = false;
|
||
|
|
private int willUpdateData = 0;
|
||
|
|
|
||
|
|
private Vector3[] viewWorldConers = new Vector3[4];
|
||
|
|
private Vector3[] rectCorners = new Vector3[2];
|
||
|
|
|
||
|
|
// for hide and show
|
||
|
|
public enum ItemLayoutType
|
||
|
|
{
|
||
|
|
// 最后一位表示滚动方向
|
||
|
|
Vertical = 0b0001, // 0001
|
||
|
|
Horizontal = 0b0010, // 0010
|
||
|
|
VerticalThenHorizontal = 0b0100, // 0100
|
||
|
|
HorizontalThenVertical = 0b0101, // 0101
|
||
|
|
}
|
||
|
|
|
||
|
|
public virtual void SetUpdateFunc(Action<int, RectTransform> func)
|
||
|
|
{
|
||
|
|
this.updateFunc = func;
|
||
|
|
}
|
||
|
|
|
||
|
|
public virtual void SetItemSizeFunc(Func<int, Vector2> func)
|
||
|
|
{
|
||
|
|
this.itemSizeFunc = func;
|
||
|
|
}
|
||
|
|
|
||
|
|
public virtual void SetItemCountFunc(Func<int> func)
|
||
|
|
{
|
||
|
|
this.itemCountFunc = func;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void SetItemGetAndRecycleFunc(Func<int, RectTransform> getFunc, Action<RectTransform> recycleFunc)
|
||
|
|
{
|
||
|
|
if (getFunc != null && recycleFunc != null)
|
||
|
|
{
|
||
|
|
this.itemGetFunc = getFunc;
|
||
|
|
this.itemRecycleFunc = recycleFunc;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
this.itemGetFunc = null;
|
||
|
|
this.itemRecycleFunc = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void ResetAllDelegates()
|
||
|
|
{
|
||
|
|
this.SetUpdateFunc(null);
|
||
|
|
this.SetItemSizeFunc(null);
|
||
|
|
this.SetItemCountFunc(null);
|
||
|
|
this.SetItemGetAndRecycleFunc(null, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void UpdateData(bool immediately = true)
|
||
|
|
{
|
||
|
|
if (immediately)
|
||
|
|
{
|
||
|
|
this.willUpdateData |= 3; // 0011
|
||
|
|
this.InternalUpdateData();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (this.willUpdateData == 0 && this.IsActive())
|
||
|
|
{
|
||
|
|
this.StartCoroutine(this.DelayUpdateData());
|
||
|
|
}
|
||
|
|
|
||
|
|
this.willUpdateData |= 3;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void UpdateDataIncrementally(bool immediately = true)
|
||
|
|
{
|
||
|
|
if (immediately)
|
||
|
|
{
|
||
|
|
this.willUpdateData |= 1; // 0001
|
||
|
|
this.InternalUpdateData();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (this.willUpdateData == 0)
|
||
|
|
{
|
||
|
|
this.StartCoroutine(this.DelayUpdateData());
|
||
|
|
}
|
||
|
|
|
||
|
|
this.willUpdateData |= 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void ScrollTo(int index)
|
||
|
|
{
|
||
|
|
this.InternalScrollTo(index);
|
||
|
|
}
|
||
|
|
|
||
|
|
protected override void OnEnable()
|
||
|
|
{
|
||
|
|
base.OnEnable();
|
||
|
|
if (this.willUpdateData != 0)
|
||
|
|
{
|
||
|
|
this.StartCoroutine(this.DelayUpdateData());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
protected override void OnDisable()
|
||
|
|
{
|
||
|
|
this.initialized = false;
|
||
|
|
base.OnDisable();
|
||
|
|
}
|
||
|
|
|
||
|
|
protected virtual void InternalScrollTo(int index)
|
||
|
|
{
|
||
|
|
index = Mathf.Clamp(index, 0, this.dataCount - 1);
|
||
|
|
this.EnsureItemRect(index);
|
||
|
|
Rect r = this.managedItems[index].rect;
|
||
|
|
|
||
|
|
var dir = (int)this.layoutType & flagScrollDirection;
|
||
|
|
if (dir == 1)
|
||
|
|
{
|
||
|
|
// vertical
|
||
|
|
var value = 1 - (-r.yMax / (this.content.sizeDelta.y - this.refRect.height));
|
||
|
|
this.SetNormalizedPosition(value, 1);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// horizontal
|
||
|
|
var value = r.xMin / (this.content.sizeDelta.x - this.refRect.width);
|
||
|
|
this.SetNormalizedPosition(value, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
protected override void SetContentAnchoredPosition(Vector2 position)
|
||
|
|
{
|
||
|
|
base.SetContentAnchoredPosition(position);
|
||
|
|
this.UpdateCriticalItems();
|
||
|
|
}
|
||
|
|
|
||
|
|
protected override void SetNormalizedPosition(float value, int axis)
|
||
|
|
{
|
||
|
|
base.SetNormalizedPosition(value, axis);
|
||
|
|
this.ResetCriticalItems();
|
||
|
|
}
|
||
|
|
|
||
|
|
protected void EnsureItemRect(int index)
|
||
|
|
{
|
||
|
|
if (!this.managedItems[index].rectDirty)
|
||
|
|
{
|
||
|
|
// 已经是干净的了
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
ScrollItemWithRect firstItem = this.managedItems[0];
|
||
|
|
if (firstItem.rectDirty)
|
||
|
|
{
|
||
|
|
Vector2 firstSize = this.GetItemSize(0);
|
||
|
|
firstItem.rect = CreateWithLeftTopAndSize(Vector2.zero, firstSize);
|
||
|
|
firstItem.rectDirty = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// 当前item之前的最近的已更新的rect
|
||
|
|
var nearestClean = 0;
|
||
|
|
for (var i = index; i >= 0; --i)
|
||
|
|
{
|
||
|
|
if (!this.managedItems[i].rectDirty)
|
||
|
|
{
|
||
|
|
nearestClean = i;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 需要更新 从 nearestClean 到 index 的尺寸
|
||
|
|
Rect nearestCleanRect = this.managedItems[nearestClean].rect;
|
||
|
|
Vector2 curPos = GetLeftTop(nearestCleanRect);
|
||
|
|
Vector2 size = nearestCleanRect.size;
|
||
|
|
this.MovePos(ref curPos, size);
|
||
|
|
|
||
|
|
for (var i = nearestClean + 1; i <= index; i++)
|
||
|
|
{
|
||
|
|
size = this.GetItemSize(i);
|
||
|
|
this.managedItems[i].rect = CreateWithLeftTopAndSize(curPos, size);
|
||
|
|
this.managedItems[i].rectDirty = false;
|
||
|
|
this.MovePos(ref curPos, size);
|
||
|
|
}
|
||
|
|
|
||
|
|
var range = new Vector2(Mathf.Abs(curPos.x), Mathf.Abs(curPos.y));
|
||
|
|
switch (this.layoutType)
|
||
|
|
{
|
||
|
|
case ItemLayoutType.VerticalThenHorizontal:
|
||
|
|
range.x += size.x;
|
||
|
|
range.y = this.refRect.height;
|
||
|
|
break;
|
||
|
|
case ItemLayoutType.HorizontalThenVertical:
|
||
|
|
range.x = this.refRect.width;
|
||
|
|
if (curPos.x != 0)
|
||
|
|
{
|
||
|
|
range.y += size.y;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
this.content.sizeDelta = range;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected override void OnDestroy()
|
||
|
|
{
|
||
|
|
if (this.itemPool != null)
|
||
|
|
{
|
||
|
|
this.itemPool.Purge();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
protected Rect GetItemLocalRect(int index)
|
||
|
|
{
|
||
|
|
if (index >= 0 && index < this.dataCount)
|
||
|
|
{
|
||
|
|
this.EnsureItemRect(index);
|
||
|
|
return this.managedItems[index].rect;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (Rect)default;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if UNITY_EDITOR
|
||
|
|
protected override void OnValidate()
|
||
|
|
{
|
||
|
|
var dir = (int)this.layoutType & flagScrollDirection;
|
||
|
|
if (dir == 1)
|
||
|
|
{
|
||
|
|
// vertical
|
||
|
|
if (this.horizontalScrollbar != null)
|
||
|
|
{
|
||
|
|
this.horizontalScrollbar.gameObject.SetActive(false);
|
||
|
|
this.horizontalScrollbar = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// horizontal
|
||
|
|
if (this.verticalScrollbar != null)
|
||
|
|
{
|
||
|
|
this.verticalScrollbar.gameObject.SetActive(false);
|
||
|
|
this.verticalScrollbar = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
base.OnValidate();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
private static Vector2 GetLeftTop(Rect rect)
|
||
|
|
{
|
||
|
|
Vector2 ret = rect.position;
|
||
|
|
ret.y += rect.size.y;
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
private static Rect CreateWithLeftTopAndSize(Vector2 leftTop, Vector2 size)
|
||
|
|
{
|
||
|
|
Vector2 leftBottom = leftTop - new Vector2(0, size.y);
|
||
|
|
return new Rect(leftBottom, size);
|
||
|
|
}
|
||
|
|
|
||
|
|
private IEnumerator DelayUpdateData()
|
||
|
|
{
|
||
|
|
yield return new WaitForEndOfFrame();
|
||
|
|
this.InternalUpdateData();
|
||
|
|
}
|
||
|
|
|
||
|
|
private void InternalUpdateData()
|
||
|
|
{
|
||
|
|
if (!this.IsActive())
|
||
|
|
{
|
||
|
|
this.willUpdateData |= 3;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!this.initialized)
|
||
|
|
{
|
||
|
|
this.InitScrollView();
|
||
|
|
}
|
||
|
|
|
||
|
|
var newDataCount = 0;
|
||
|
|
var keepOldItems = (this.willUpdateData & 2) == 0;
|
||
|
|
|
||
|
|
if (this.itemCountFunc != null)
|
||
|
|
{
|
||
|
|
newDataCount = this.itemCountFunc();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (newDataCount != this.managedItems.Count)
|
||
|
|
{
|
||
|
|
if (this.managedItems.Count < newDataCount)
|
||
|
|
{
|
||
|
|
// 增加
|
||
|
|
if (!keepOldItems)
|
||
|
|
{
|
||
|
|
foreach (var itemWithRect in this.managedItems)
|
||
|
|
{
|
||
|
|
// 重置所有rect
|
||
|
|
itemWithRect.rectDirty = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
while (this.managedItems.Count < newDataCount)
|
||
|
|
{
|
||
|
|
this.managedItems.Add(new ScrollItemWithRect());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// 减少 保留空位 避免GC
|
||
|
|
for (int i = 0, count = this.managedItems.Count; i < count; ++i)
|
||
|
|
{
|
||
|
|
if (i < newDataCount)
|
||
|
|
{
|
||
|
|
// 重置所有rect
|
||
|
|
if (!keepOldItems)
|
||
|
|
{
|
||
|
|
this.managedItems[i].rectDirty = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (i == newDataCount - 1)
|
||
|
|
{
|
||
|
|
this.managedItems[i].rectDirty = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 超出部分 清理回收item
|
||
|
|
if (i >= newDataCount)
|
||
|
|
{
|
||
|
|
this.managedItems[i].rectDirty = true;
|
||
|
|
if (this.managedItems[i].item != null)
|
||
|
|
{
|
||
|
|
this.RecycleOldItem(this.managedItems[i].item);
|
||
|
|
this.managedItems[i].item = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (!keepOldItems)
|
||
|
|
{
|
||
|
|
for (int i = 0, count = this.managedItems.Count; i < count; ++i)
|
||
|
|
{
|
||
|
|
// 重置所有rect
|
||
|
|
this.managedItems[i].rectDirty = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
this.dataCount = newDataCount;
|
||
|
|
|
||
|
|
this.ResetCriticalItems();
|
||
|
|
|
||
|
|
this.willUpdateData = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
private void ResetCriticalItems()
|
||
|
|
{
|
||
|
|
bool hasItem, shouldShow;
|
||
|
|
int firstIndex = -1, lastIndex = -1;
|
||
|
|
|
||
|
|
for (var i = 0; i < this.dataCount; i++)
|
||
|
|
{
|
||
|
|
hasItem = this.managedItems[i].item != null;
|
||
|
|
shouldShow = this.ShouldItemSeenAtIndex(i);
|
||
|
|
|
||
|
|
if (shouldShow)
|
||
|
|
{
|
||
|
|
if (firstIndex == -1)
|
||
|
|
{
|
||
|
|
firstIndex = i;
|
||
|
|
}
|
||
|
|
|
||
|
|
lastIndex = i;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hasItem && shouldShow)
|
||
|
|
{
|
||
|
|
// 应显示且已显示
|
||
|
|
this.SetDataForItemAtIndex(this.managedItems[i].item, i);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hasItem == shouldShow)
|
||
|
|
{
|
||
|
|
// 不应显示且未显示
|
||
|
|
// if (firstIndex != -1)
|
||
|
|
// {
|
||
|
|
// // 已经遍历完所有要显示的了 后边的先跳过
|
||
|
|
// break;
|
||
|
|
// }
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hasItem && !shouldShow)
|
||
|
|
{
|
||
|
|
// 不该显示 但是有
|
||
|
|
this.RecycleOldItem(this.managedItems[i].item);
|
||
|
|
this.managedItems[i].item = null;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (shouldShow && !hasItem)
|
||
|
|
{
|
||
|
|
// 需要显示 但是没有
|
||
|
|
RectTransform item = this.GetNewItem(i);
|
||
|
|
this.OnGetItemForDataIndex(item, i);
|
||
|
|
this.managedItems[i].item = item;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// content.localPosition = Vector2.zero;
|
||
|
|
this.criticalItemIndex[CriticalItemType.UpToHide] = firstIndex;
|
||
|
|
this.criticalItemIndex[CriticalItemType.DownToHide] = lastIndex;
|
||
|
|
this.criticalItemIndex[CriticalItemType.UpToShow] = Mathf.Max(firstIndex - 1, 0);
|
||
|
|
this.criticalItemIndex[CriticalItemType.DownToShow] = Mathf.Min(lastIndex + 1, this.dataCount - 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
private RectTransform GetCriticalItem(int type)
|
||
|
|
{
|
||
|
|
var index = this.criticalItemIndex[type];
|
||
|
|
if (index >= 0 && index < this.dataCount)
|
||
|
|
{
|
||
|
|
return this.managedItems[index].item;
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
private void UpdateCriticalItems()
|
||
|
|
{
|
||
|
|
var dirty = true;
|
||
|
|
|
||
|
|
while (dirty)
|
||
|
|
{
|
||
|
|
dirty = false;
|
||
|
|
|
||
|
|
for (int i = CriticalItemType.UpToHide; i <= CriticalItemType.DownToShow; i++)
|
||
|
|
{
|
||
|
|
if (i <= CriticalItemType.DownToHide)
|
||
|
|
{
|
||
|
|
// 隐藏离开可见区域的item
|
||
|
|
dirty = dirty || this.CheckAndHideItem(i);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// 显示进入可见区域的item
|
||
|
|
dirty = dirty || this.CheckAndShowItem(i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private bool CheckAndHideItem(int criticalItemType)
|
||
|
|
{
|
||
|
|
RectTransform item = this.GetCriticalItem(criticalItemType);
|
||
|
|
var criticalIndex = this.criticalItemIndex[criticalItemType];
|
||
|
|
if (item != null && !this.ShouldItemSeenAtIndex(criticalIndex))
|
||
|
|
{
|
||
|
|
this.RecycleOldItem(item);
|
||
|
|
this.managedItems[criticalIndex].item = null;
|
||
|
|
|
||
|
|
if (criticalItemType == CriticalItemType.UpToHide)
|
||
|
|
{
|
||
|
|
// 最上隐藏了一个
|
||
|
|
this.criticalItemIndex[criticalItemType + 2] = Mathf.Max(criticalIndex, this.criticalItemIndex[criticalItemType + 2]);
|
||
|
|
this.criticalItemIndex[criticalItemType]++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// 最下隐藏了一个
|
||
|
|
this.criticalItemIndex[criticalItemType + 2] = Mathf.Min(criticalIndex, this.criticalItemIndex[criticalItemType + 2]);
|
||
|
|
this.criticalItemIndex[criticalItemType]--;
|
||
|
|
}
|
||
|
|
|
||
|
|
this.criticalItemIndex[criticalItemType] = Mathf.Clamp(this.criticalItemIndex[criticalItemType], 0, this.dataCount - 1);
|
||
|
|
|
||
|
|
if (this.criticalItemIndex[CriticalItemType.UpToHide] > this.criticalItemIndex[CriticalItemType.DownToHide])
|
||
|
|
{
|
||
|
|
// 偶然的情况 拖拽超出一屏
|
||
|
|
this.ResetCriticalItems();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
private bool CheckAndShowItem(int criticalItemType)
|
||
|
|
{
|
||
|
|
RectTransform item = this.GetCriticalItem(criticalItemType);
|
||
|
|
var criticalIndex = this.criticalItemIndex[criticalItemType];
|
||
|
|
|
||
|
|
if (item == null && this.ShouldItemSeenAtIndex(criticalIndex))
|
||
|
|
{
|
||
|
|
RectTransform newItem = this.GetNewItem(criticalIndex);
|
||
|
|
this.OnGetItemForDataIndex(newItem, criticalIndex);
|
||
|
|
this.managedItems[criticalIndex].item = newItem;
|
||
|
|
|
||
|
|
if (criticalItemType == CriticalItemType.UpToShow)
|
||
|
|
{
|
||
|
|
// 最上显示了一个
|
||
|
|
this.criticalItemIndex[criticalItemType - 2] = Mathf.Min(criticalIndex, this.criticalItemIndex[criticalItemType - 2]);
|
||
|
|
this.criticalItemIndex[criticalItemType]--;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// 最下显示了一个
|
||
|
|
this.criticalItemIndex[criticalItemType - 2] = Mathf.Max(criticalIndex, this.criticalItemIndex[criticalItemType - 2]);
|
||
|
|
this.criticalItemIndex[criticalItemType]++;
|
||
|
|
}
|
||
|
|
|
||
|
|
this.criticalItemIndex[criticalItemType] = Mathf.Clamp(this.criticalItemIndex[criticalItemType], 0, this.dataCount - 1);
|
||
|
|
|
||
|
|
if (this.criticalItemIndex[CriticalItemType.UpToShow] >= this.criticalItemIndex[CriticalItemType.DownToShow])
|
||
|
|
{
|
||
|
|
// 偶然的情况 拖拽超出一屏
|
||
|
|
this.ResetCriticalItems();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
private bool ShouldItemSeenAtIndex(int index)
|
||
|
|
{
|
||
|
|
if (index < 0 || index >= this.dataCount)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
this.EnsureItemRect(index);
|
||
|
|
return new Rect(this.refRect.position - this.content.anchoredPosition, this.refRect.size).Overlaps(this.managedItems[index].rect);
|
||
|
|
}
|
||
|
|
|
||
|
|
private bool ShouldItemFullySeenAtIndex(int index)
|
||
|
|
{
|
||
|
|
if (index < 0 || index >= this.dataCount)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
this.EnsureItemRect(index);
|
||
|
|
return this.IsRectContains(new Rect(this.refRect.position - this.content.anchoredPosition, this.refRect.size), this.managedItems[index].rect);
|
||
|
|
}
|
||
|
|
|
||
|
|
private bool IsRectContains(Rect outRect, Rect inRect, bool bothDimensions = false)
|
||
|
|
{
|
||
|
|
if (bothDimensions)
|
||
|
|
{
|
||
|
|
var xContains = (outRect.xMax >= inRect.xMax) && (outRect.xMin <= inRect.xMin);
|
||
|
|
var yContains = (outRect.yMax >= inRect.yMax) && (outRect.yMin <= inRect.yMin);
|
||
|
|
return xContains && yContains;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
var dir = (int)this.layoutType & flagScrollDirection;
|
||
|
|
if (dir == 1)
|
||
|
|
{
|
||
|
|
// 垂直滚动 只计算y向
|
||
|
|
return (outRect.yMax >= inRect.yMax) && (outRect.yMin <= inRect.yMin);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// = 0
|
||
|
|
// 水平滚动 只计算x向
|
||
|
|
return (outRect.xMax >= inRect.xMax) && (outRect.xMin <= inRect.xMin);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void InitPool()
|
||
|
|
{
|
||
|
|
var poolNode = new GameObject("POOL");
|
||
|
|
poolNode.SetActive(false);
|
||
|
|
poolNode.transform.SetParent(this.transform, false);
|
||
|
|
this.itemPool = new SimpleObjPool<RectTransform>(
|
||
|
|
this.poolSize,
|
||
|
|
(RectTransform item) =>
|
||
|
|
{
|
||
|
|
item.transform.SetParent(poolNode.transform, false);
|
||
|
|
},
|
||
|
|
() =>
|
||
|
|
{
|
||
|
|
GameObject itemObj = Instantiate(this.itemTemplate.gameObject);
|
||
|
|
RectTransform item = itemObj.GetComponent<RectTransform>();
|
||
|
|
itemObj.transform.SetParent(poolNode.transform, false);
|
||
|
|
|
||
|
|
item.anchorMin = Vector2.up;
|
||
|
|
item.anchorMax = Vector2.up;
|
||
|
|
item.pivot = Vector2.zero;
|
||
|
|
|
||
|
|
itemObj.SetActive(true);
|
||
|
|
return item;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
private void OnGetItemForDataIndex(RectTransform item, int index)
|
||
|
|
{
|
||
|
|
this.SetDataForItemAtIndex(item, index);
|
||
|
|
item.transform.SetParent(this.content, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
private void SetDataForItemAtIndex(RectTransform item, int index)
|
||
|
|
{
|
||
|
|
if (this.updateFunc != null)
|
||
|
|
{
|
||
|
|
this.updateFunc(index, item);
|
||
|
|
}
|
||
|
|
|
||
|
|
this.SetPosForItemAtIndex(item, index);
|
||
|
|
}
|
||
|
|
|
||
|
|
private void SetPosForItemAtIndex(RectTransform item, int index)
|
||
|
|
{
|
||
|
|
this.EnsureItemRect(index);
|
||
|
|
Rect r = this.managedItems[index].rect;
|
||
|
|
item.localPosition = r.position;
|
||
|
|
item.sizeDelta = r.size;
|
||
|
|
}
|
||
|
|
|
||
|
|
private Vector2 GetItemSize(int index)
|
||
|
|
{
|
||
|
|
if (index >= 0 && index <= this.dataCount)
|
||
|
|
{
|
||
|
|
if (this.itemSizeFunc != null)
|
||
|
|
{
|
||
|
|
return this.itemSizeFunc(index);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return this.defaultItemSize;
|
||
|
|
}
|
||
|
|
|
||
|
|
private RectTransform GetNewItem(int index)
|
||
|
|
{
|
||
|
|
RectTransform item;
|
||
|
|
if (this.itemGetFunc != null)
|
||
|
|
{
|
||
|
|
item = this.itemGetFunc(index);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
item = this.itemPool.Get();
|
||
|
|
}
|
||
|
|
|
||
|
|
return item;
|
||
|
|
}
|
||
|
|
|
||
|
|
private void RecycleOldItem(RectTransform item)
|
||
|
|
{
|
||
|
|
if (this.itemRecycleFunc != null)
|
||
|
|
{
|
||
|
|
this.itemRecycleFunc(item);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
this.itemPool.Recycle(item);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void InitScrollView()
|
||
|
|
{
|
||
|
|
this.initialized = true;
|
||
|
|
|
||
|
|
// 根据设置来控制原ScrollRect的滚动方向
|
||
|
|
var dir = (int)this.layoutType & flagScrollDirection;
|
||
|
|
this.vertical = dir == 1;
|
||
|
|
this.horizontal = dir == 0;
|
||
|
|
|
||
|
|
this.content.pivot = Vector2.up;
|
||
|
|
this.content.anchorMin = Vector2.up;
|
||
|
|
this.content.anchorMax = Vector2.up;
|
||
|
|
this.content.anchoredPosition = Vector2.zero;
|
||
|
|
|
||
|
|
this.InitPool();
|
||
|
|
this.UpdateRefRect();
|
||
|
|
}
|
||
|
|
|
||
|
|
// refRect是在Content节点下的 viewport的 rect
|
||
|
|
private void UpdateRefRect()
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* WorldCorners
|
||
|
|
*
|
||
|
|
* 1 ------- 2
|
||
|
|
* | |
|
||
|
|
* | |
|
||
|
|
* 0 ------- 3
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (!CanvasUpdateRegistry.IsRebuildingLayout())
|
||
|
|
{
|
||
|
|
Canvas.ForceUpdateCanvases();
|
||
|
|
}
|
||
|
|
|
||
|
|
this.viewRect.GetWorldCorners(this.viewWorldConers);
|
||
|
|
this.rectCorners[0] = this.content.transform.InverseTransformPoint(this.viewWorldConers[0]);
|
||
|
|
this.rectCorners[1] = this.content.transform.InverseTransformPoint(this.viewWorldConers[2]);
|
||
|
|
this.refRect = new Rect((Vector2)this.rectCorners[0] - this.content.anchoredPosition, this.rectCorners[1] - this.rectCorners[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
private void MovePos(ref Vector2 pos, Vector2 size)
|
||
|
|
{
|
||
|
|
// 注意 所有的rect都是左下角为基准
|
||
|
|
switch (this.layoutType)
|
||
|
|
{
|
||
|
|
case ItemLayoutType.Vertical:
|
||
|
|
// 垂直方向 向下移动
|
||
|
|
pos.y -= size.y;
|
||
|
|
break;
|
||
|
|
case ItemLayoutType.Horizontal:
|
||
|
|
// 水平方向 向右移动
|
||
|
|
pos.x += size.x;
|
||
|
|
break;
|
||
|
|
case ItemLayoutType.VerticalThenHorizontal:
|
||
|
|
pos.y -= size.y;
|
||
|
|
if (pos.y <= -this.refRect.height)
|
||
|
|
{
|
||
|
|
pos.y = 0;
|
||
|
|
pos.x += size.x;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
case ItemLayoutType.HorizontalThenVertical:
|
||
|
|
pos.x += size.x;
|
||
|
|
if (pos.x >= this.refRect.width)
|
||
|
|
{
|
||
|
|
pos.x = 0;
|
||
|
|
pos.y -= size.y;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// const int 代替 enum 减少 (int)和(CriticalItemType)转换
|
||
|
|
protected static class CriticalItemType
|
||
|
|
{
|
||
|
|
public static byte UpToHide = 0;
|
||
|
|
public static byte DownToHide = 1;
|
||
|
|
public static byte UpToShow = 2;
|
||
|
|
public static byte DownToShow = 3;
|
||
|
|
}
|
||
|
|
|
||
|
|
private class ScrollItemWithRect
|
||
|
|
{
|
||
|
|
// scroll item 身上的 RectTransform组件
|
||
|
|
public RectTransform item;
|
||
|
|
|
||
|
|
// scroll item 在scrollview中的位置
|
||
|
|
public Rect rect;
|
||
|
|
|
||
|
|
// rect 是否需要更新
|
||
|
|
public bool rectDirty = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|