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UIWrapContentEx.cs
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UIWrapContentEx.cs
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//----------------------------------------------
// NGUI: Next-Gen UI kit
// Copyright © 2011-2015 Tasharen Entertainment
//----------------------------------------------
using UnityEngine;
using System.Collections.Generic;
using System;
/// <summary>
/// This script makes it possible for a scroll view to wrap its content, creating endless scroll views.
/// Usage: simply attach this script underneath your scroll view where you would normally place a UIGrid:
///
/// + Scroll View
/// |- UIWrappedContent
/// |-- Item 1
/// |-- Item 2
/// |-- Item 3
/// </summary>
[AddComponentMenu("NGUI/Interaction/Wrap Content Ex")]
public class UIWrapContentEx : MonoBehaviour
{
public delegate void OnInitializeItem(GameObject go, int realIndex, int rowIndex);
public delegate void OnListOnTop(bool b);
public delegate void OnListOnBottom(bool b);
public enum ShowCondition
{
Always,
OnlyIfNeeded,
WhenDragging,
}
bool onTop = false;
bool onBottom = false;
//bool onLeft = false;
//bool onRight = false;
/// <summary>
/// Width or height of the child items for positioning purposes.
/// </summary>
public int itemXSpace = 20; //列间距
public int itemYSpace = 20; //行间距
public int rowNumber = 1;
float beginX;
float beginY;
public int itemCount = 0;
int pageCount = 0;
bool bDirty = true;
public bool dirty
{
set
{
bDirty = value;
}
}
public bool bLoop = true;
/// <summary>
/// Whether the content will be automatically culled. Enabling this will improve performance in scroll views that contain a lot of items.
/// </summary>
public bool cullContent = true;
/// <summary>
/// Callback that will be called every time an item needs to have its content updated.
/// The 'wrapIndex' is the index within the child list, and 'realIndex' is the index using position logic.
/// </summary>
public OnInitializeItem onInitializeItem;
public UIScrollView.OnDragNotification onScrollFinish;
public OnListOnTop onListOnTop;
public OnListOnBottom onListOnBottom;
Transform mTrans;
UIPanel mPanel;
public UIScrollView mScroll;
Vector4 mScrollBeginPos;
Vector2 mScrollBeginOffset;
Vector4 mScrollBeginPos_Orignal;
Vector2 mScrollBeginOffset_Orignal;
bool mHorizontal = false;
bool mFirstTime = true;
List<Transform> mChildren = new List<Transform>();
public UIScrollBar scrollBar;
public ShowCondition showScrollBars = ShowCondition.OnlyIfNeeded;
float fBarValue;
public float barValue
{
set
{
fBarValue = value;
if (scrollBar != null)
{
scrollBar.value = fBarValue;
}
//TODO:目前只考虑垂直
if (mHorizontal)
{
}
else
{
CheckBarEvent(value);
}
}
get
{
return fBarValue;
}
}
void CheckBarEvent(float value)
{
if (!mHorizontal)
{
if(mScroll == null||mScroll.panel == null )
{
//Debug.LogWarning("111");
}
if (mScroll != null &&mScroll.panel != null&&!mScroll.shouldMoveVertically)
{
onTop = true;
if (null != onListOnTop) onListOnTop(onTop);
onBottom = true;
if (null != onListOnBottom) onListOnBottom(onBottom);
}
else
{
if (Mathf.Abs(value) < 0.01f)
{
if (!onTop)
{
onTop = true;
if (null != onListOnTop) onListOnTop(onTop);
}
onBottom = false;
if (null != onListOnBottom) onListOnBottom(onBottom);
}
else if (Mathf.Abs(value - 1) < 0.01f)
{
if (!onBottom)
{
onBottom = true;
if (null != onListOnBottom) onListOnBottom(onBottom);
}
onTop = false;
if (null != onListOnTop) onListOnTop(onTop);
}
else
{
if (onTop)
{
onTop = false;
if (null != onListOnTop) onListOnTop(onTop);
}
if (onBottom)
{
onBottom = false;
if (null != onListOnBottom) onListOnBottom(onBottom);
}
}
}
}
else
{
//TODO:
}
}
bool mIgnoreCallbacks = false;
/// <summary>
/// Initialize everything and register a callback with the UIPanel to be notified when the clipping region moves.
/// </summary>
protected virtual void Start()
{
ResetContent(itemCount);
}
protected virtual void Awake()
{
SortBasedOnScrollMovement();
//ResetChildPositions();
//ResetContent(itemCount);
}
public void ResetContent(int iCount, bool bRePos = true)
{
// if (this.gameObject.GetComponent<DragPlaySound>() == null)
// {
// dragPlaySound = this.gameObject.AddComponent<DragPlaySound>();
// dragPlaySound.audioClip = UIManager.instance.ScrollViewDragSound;
// dragPlaySound.volume = UIManager.instance.ScrollViewDragSoundVolume;
//
// }
if (bRePos)
{
if (mScroll != null)
{
mScroll.transform.localPosition = mScrollBeginPos_Orignal;
mScroll.restrictWithinPanel = false;
mScroll.DisableSpring();
}
}
if (bRePos)
{
if (mPanel != null)
{
mPanel.clipOffset = mScrollBeginOffset_Orignal;
}
ResetChildPositions();
}
bDirty = true;
itemCount = iCount;
mFirstTime = true;
WrapContent();
mFirstTime = false;
if (bRePos)
{
barValue = 0;
}
mIgnoreCallbacks = true;
Processbar();
CheckBarEvent(barValue);
mIgnoreCallbacks = false;
}
public void RefreshContent(int iCount)
{
bDirty = true;
itemCount = iCount;
mFirstTime = true;
WrapContent();
mFirstTime = false;
mIgnoreCallbacks = true;
Processbar();
mIgnoreCallbacks = false;
}
void ClampInItem()
{
}
public void Drag(Vector3 offPos, float fStrength)
{
//SpringPanel sp = mScroll.GetComponent<SpringPanel>();
//if (sp != null && sp.enabled )
// return;
//TODO:临时实现，只考虑垂直
if (mHorizontal)
{
}
else
{
float fOver = (mPanel.clipOffset.y + offPos.y) % itemYSpace;
offPos.y -= fOver;
Vector3 pos = mScroll.transform.localPosition;
if (mPanel.clipOffset.y + offPos.y >= 0)
{
pos.y = mScrollBeginPos_Orignal.y;
}
else if (mPanel.clipOffset.y + offPos.y <= -(itemYSpace * itemCount / rowNumber - mPanel.finalClipRegion.w))
{
pos.y = itemYSpace * itemCount / rowNumber - mPanel.finalClipRegion.w + mScrollBeginPos_Orignal.y;
}
else
{
pos = mScroll.transform.localPosition - offPos;
}
SpringPanel.Begin(mScroll.gameObject, pos, fStrength);
}
}
public void SetScrollViewDragFinish(UIScrollView.OnDragNotification onDragFinished_)
{
onScrollFinish = onDragFinished_;
if (mScroll == null) return;
if (onScrollFinish != null)
mScroll.onDragFinished = onScrollFinish;
}
/// <summary>
/// Cache the scroll view and return 'false' if the scroll view is not found.
/// </summary>
protected bool CacheScrollView()
{
mTrans = transform;
mPanel = NGUITools.FindInParents<UIPanel>(gameObject);
mScroll = mPanel.GetComponent<UIScrollView>();
if (mScroll == null) return false;
if (onScrollFinish != null && mScroll.onDragFinished == null)
mScroll.onDragFinished = onScrollFinish;
mScrollBeginPos = mScroll.transform.localPosition;
mScrollBeginPos_Orignal = mScrollBeginPos;
mScrollBeginOffset = mPanel.clipOffset;
mScrollBeginOffset_Orignal = mScrollBeginOffset;
if (mScroll.movement == UIScrollView.Movement.Horizontal) mHorizontal = true;
else if (mScroll.movement == UIScrollView.Movement.Vertical) mHorizontal = false;
else return false;
if (mScroll != null)
{
mScroll.GetComponent<UIPanel>().onClipMove = OnMove;
if (scrollBar != null && scrollBar.onChange.Count == 0)
{
EventDelegate.Add(scrollBar.onChange, OnScrollBar);
}
mScroll.onCustomConstraint = OnCustomConstraint;
}
return true;
}
public void OnScrollBar()
{
if (scrollBar == null)
return;
if (!mIgnoreCallbacks)
{
mIgnoreCallbacks = true;
float value = scrollBar.value;
//Debug.LogWarning("OnScrollBar == " + value);
mScroll.DisableSpring();
if (mHorizontal)
{
float beginX = mScrollBeginPos.x;
int lineCount = (itemCount / rowNumber) + ((itemCount % rowNumber) != 0 ? 1 : 0);
float totalX = lineCount * itemXSpace - mPanel.finalClipRegion.z;
float ox = Mathf.Lerp(beginX, -totalX, value);
mScroll.transform.localPosition = new Vector3(ox, mScroll.transform.localPosition.y, mScroll.transform.localPosition.z);
Vector4 cr = mPanel.baseClipRegion;
mPanel.clipOffset = new Vector2(beginX -ox + mScrollBeginOffset.x, cr.y + mScrollBeginOffset.y);
}
else
{
float beginY = mScrollBeginPos.y;
int lineCount = (itemCount / rowNumber) + ((itemCount % rowNumber) != 0 ? 1 : 0);
float totalY = lineCount * itemYSpace - mPanel.finalClipRegion.w + beginY;
float ox = Mathf.Lerp(beginY, totalY, value);
//Debug.LogWarning("bar value:" + value.ToString() );
mScroll.transform.localPosition = new Vector3(mScroll.transform.localPosition.x, ox, mScroll.transform.localPosition.z);
//Debug.LogWarning("bar localPosition y:" + mScroll.transform.localPosition.y.ToString());
Vector4 cr = mPanel.baseClipRegion;
mPanel.clipOffset = new Vector2(cr.x + mScrollBeginOffset.x, beginY - ox + mScrollBeginOffset.y);
}
mIgnoreCallbacks = false;
}
}
public Vector3 OnCustomConstraint(Bounds bounds)
{
Vector3 constraint = Vector3.zero;
if (mHorizontal)
{
//TODO:这里貌似没测试过
float x = mScroll.transform.localPosition.x;
int lineCount = (itemCount / rowNumber) + ((itemCount % rowNumber) != 0 ? 1 : 0);
float lineSize = lineCount * itemXSpace;
float fTotalX = lineSize - mPanel.finalClipRegion.z;
if (fTotalX <= 0)
{
constraint = mPanel.clipOffset;
}
else
{
if (x > mScrollBeginPos.x)
{
constraint = mPanel.clipOffset;
}
else if (mScrollBeginPos.x - x + mPanel.finalClipRegion.z > lineSize)
{
//constraint = mPanel.CalculateConstrainOffset(bounds.min, bounds.max);
constraint = new Vector3(lineSize - (x - mScrollBeginPos.x + mPanel.finalClipRegion.z), 0, 0);
}
}
}
else
{
float y = mScroll.transform.localPosition.y;
int lineCount = (itemCount / rowNumber) + ((itemCount % rowNumber) != 0 ? 1 : 0);
float lineSize = lineCount * itemYSpace;
float fTotalY = lineSize - mPanel.finalClipRegion.w;
if (fTotalY <= 0)
{
constraint = mPanel.clipOffset;
}
else
{
if (y <= mScrollBeginPos.y)
{
constraint = mPanel.clipOffset;
}
else if (y - mScrollBeginPos.y + mPanel.finalClipRegion.w > lineSize)
{
//constraint = mPanel.CalculateConstrainOffset(bounds.min, bounds.max);
constraint = new Vector3(0, lineSize - (y - mScrollBeginPos.y + mPanel.finalClipRegion.w), 0);
}
}
}
return constraint;
}
public void Processbar()
{
if (mHorizontal)
{
ProcessHorizontalbar();
}
else
{
ProcessVerticalbar();
}
//xumj 对滚动条进行隐藏\
if (scrollBar)
scrollBar.alpha = ((showScrollBars == ShowCondition.Always) || scrollBar.barSize != 1f) ? 1f : 0f;
}
void ProcessHorizontalbar()
{
if (mScroll == null)
return;
if (mPanel == null) {
return;
}
if (!bLoop)
{
float x = mScroll.transform.localPosition.x;
int lineCount = (itemCount / rowNumber) + ((itemCount % rowNumber) != 0 ? 1 : 0);
float lineSize = lineCount * itemXSpace;
float fTotalX = lineSize - mPanel.finalClipRegion.z;
float value = 0;
float offX = 0;
if (fTotalX <= 0)
{
if (x <= mScrollBeginPos.x)
{
offX = mScrollBeginPos.x - x;
value = 0;
}
else if (x - mScrollBeginPos.x + lineSize > mPanel.finalClipRegion.z)
{
offX = x - mScrollBeginPos.x + lineSize - mPanel.finalClipRegion.z;
value = 1;
}
else
{
value = 0;
}
if (scrollBar != null)
{
scrollBar.barSize = Mathf.Clamp(lineSize / (lineSize + offX), 0.05f, 1.0f);
}
}
else
{
if (x > mScrollBeginPos.x)
{
offX = x - mScrollBeginPos.x;
value = 0;
}
else if (mScrollBeginPos.x - x + mPanel.finalClipRegion.z > lineSize)
{
offX = mScrollBeginPos.x - x + mPanel.finalClipRegion.z - lineSize;
value = 1;
}
else
{
value = (mScrollBeginPos.x - x) / fTotalX;
}
if (scrollBar != null)
{
scrollBar.barSize = Mathf.Clamp(mPanel.finalClipRegion.z / (lineSize + offX), 0.05f, 1.0f);
}
}
//scrollBar.value = value;
barValue = value;
}
}
void ProcessVerticalbar()
{
if (mScroll == null)
return;
if (mPanel == null) {
return;
}
if (!bLoop)
{
float y = mScroll.transform.localPosition.y;
int lineCount = (itemCount / rowNumber) + ((itemCount % rowNumber) != 0 ? 1 : 0);
float lineSize = lineCount * itemYSpace;
float fTotalY = lineSize - mPanel.finalClipRegion.w;
float value = 0;
float offY = 0;
if (fTotalY <= 0)
{
if (y <= mScrollBeginPos.y)
{
offY = mScrollBeginPos.y - y;
value = 0;
}
else if (y - mScrollBeginPos.y + lineSize > mPanel.finalClipRegion.w)
{
offY = y - mScrollBeginPos.y + lineSize - mPanel.finalClipRegion.w;
value = 1;
}
else
{
value = 0;
}
if (scrollBar != null)
{
scrollBar.barSize = Mathf.Clamp(lineSize / (lineSize + offY), 0.05f, 1.0f);
}
}
else
{
if (y <= mScrollBeginPos.y)
{
offY = mScrollBeginPos.y - y;
value = 0;
}
else if (y - mScrollBeginPos.y + mPanel.finalClipRegion.w > lineSize)
{
offY = y - mScrollBeginPos.y + mPanel.finalClipRegion.w - lineSize;
value = 1;
}
else
{
value = (y - mScrollBeginPos.y) / fTotalY;
}
if (scrollBar != null)
{
scrollBar.barSize = Mathf.Clamp(mPanel.finalClipRegion.w / (lineSize + offY), 0.05f, 1.0f);
}
}
//if (scrollBar != null)
//{
// scrollBar.value = value;
//}
barValue = value;
}
}
/// <summary>
/// Callback triggered by the UIPanel when its clipping region moves (for example when it's being scrolled).
/// </summary>
protected virtual void OnMove(UIPanel panel)
{
WrapContent();
if (!mIgnoreCallbacks)
{
mIgnoreCallbacks = true;
Processbar();
mIgnoreCallbacks = false;
}
}
/// <summary>
/// Immediately reposition all children.
/// </summary>
[ContextMenu("Sort Based on Scroll Movement")]
public void SortBasedOnScrollMovement()
{
if (!CacheScrollView()) return;
// Cache all children and place them in order
mChildren.Clear();
for (int i = 0; i < mTrans.childCount; ++i)
mChildren.Add(mTrans.GetChild(i));
if (itemCount == 0)
{
itemCount = mChildren.Count;
}
// Sort the list of children so that they are in order
//if (mHorizontal) mChildren.Sort(UIGrid.SortHorizontal);
//else mChildren.Sort(UIGrid.SortVertical);
ResetChildPositions();
}
/// <summary>
/// Helper function that resets the position of all the children.
/// </summary>
void ResetChildPositions()
{
if (rowNumber == 0)
return;
if (mPanel == null)
return;
beginX = -mPanel.baseClipRegion.z / 2 + itemXSpace / 2 + mPanel.baseClipRegion.x;
beginY = mPanel.baseClipRegion.w / 2 - itemYSpace / 2 + mPanel.baseClipRegion.y;
beginX -= transform.localPosition.x;
beginY -= transform.localPosition.y;
beginX += mPanel.clipOffset.x;
beginY += mPanel.clipOffset.y;
float curX = beginX;
float curY = beginY;
int rowIndex = 0;
for (int i = 0, imax = mChildren.Count; i < imax; ++i)
{
Transform t = mChildren[i];
t.localPosition = new Vector3(curX, curY, 0);
if (mHorizontal)
{
if (((i + 1) % rowNumber == 0))
{
curY = beginY;
curX += itemXSpace;
rowIndex++;
}
else
{
curY -= itemYSpace;
}
}
else
{
if (((i + 1) % rowNumber == 0))
{
curX = beginX;
curY -= itemYSpace;
rowIndex++;
}
else
{
curX += itemXSpace;
}
}
//UpdateItem(t, i, rowIndex);
//if (Application.isPlaying && !Application.isEditor)
if (Application.isPlaying )
NGUITools.SetActive(t.gameObject, false, false);
}
if (mHorizontal)
{
pageCount = rowNumber * ((int)(mPanel.baseClipRegion.z) / itemXSpace);
}
else
{
pageCount = rowNumber * ((int)(mPanel.baseClipRegion.w) / itemYSpace);
}
}
public void ScrollToIndex(int index)
{
float targetPercent = barValue;
int RowTotal = (itemCount / rowNumber + ((itemCount % rowNumber) != 0 ? 1 : 0));
if (RowTotal == 0)
return;
int indexRow = index / rowNumber;
if (mHorizontal)
{
int showTotal = (int)mPanel.finalClipRegion.z / itemXSpace;
targetPercent = (float)indexRow / (float)(RowTotal - showTotal);
}
else
{
//没测试过
int showTotal = (int)mPanel.finalClipRegion.w / itemYSpace;
targetPercent = (float)indexRow / (float)(RowTotal - showTotal);
}
barValue = targetPercent;
}
///// <summary>
///// Helper function that resets the position of all the children.
///// </summary>
//void ResetChildPositions()
//{
// if (rowNumber == 0)
// return;
// beginX = -mPanel.baseClipRegion.z / 2 + itemXSpace / 2 + mPanel.baseClipRegion.x;
// beginY = mPanel.baseClipRegion.w / 2 - itemYSpace / 2 + mPanel.baseClipRegion.y;
// beginX -= transform.localPosition.x;
// beginY -= transform.localPosition.y;
// float curX = beginX;
// float curY = beginY;
// int rowIndex = 0;
// for (int i = 0, imax = mChildren.Count; i < imax; ++i)
// {
// Transform t = mChildren[i];
// t.localPosition = new Vector3(curX, curY, 0);
// if (mHorizontal)
// {
// if (((i + 1) % rowNumber == 0))
// {
// curY = beginY;
// curX += itemXSpace;
// rowIndex++;
// }
// else
// {
// curY -= itemYSpace;
// }
// }
// else
// {
// if (((i + 1) % rowNumber == 0))
// {
// curX = beginX;
// curY -= itemYSpace;
// rowIndex++;
// }
// else
// {
// curX += itemXSpace;
// }
// }
// //UpdateItem(t, i, rowIndex);
// NGUITools.SetActive(t.gameObject, false, false);
// }
// if (mHorizontal)
// {
// pageCount = rowNumber * ((int)(mPanel.baseClipRegion.z) / itemYSpace);
// }
// else
// {
// pageCount = rowNumber * ((int)(mPanel.baseClipRegion.w) / itemXSpace);
// }
//}
int CutOffRealIndex(int iReadIndex)
{
if (itemCount <= 0)
return 0;
while (iReadIndex < 0)
{
iReadIndex += itemCount;
}
if (iReadIndex >= itemCount)
{
iReadIndex = iReadIndex % itemCount;
}
return iReadIndex;
}
/// <summary>
/// Wrap all content, repositioning all children as needed.
/// </summary>
///
//float fffff_LastCenterY = 0;
private void WrapVerticalContent()
{
if (mPanel == null)
return;
int lineCount = (mChildren.Count / rowNumber) + ((mChildren.Count % rowNumber) != 0 ? 1 : 0);
//拥有控件的总共大小的一半
float extents = itemYSpace * lineCount * 0.5f;
Vector3[] corners = mPanel.worldCorners;
for (int i = 0; i < 4; ++i)
{
Vector3 v = corners[i];
v = mTrans.InverseTransformPoint(v);
corners[i] = v;
}
Vector3 center = Vector3.Lerp(corners[0], corners[2], 0.5f);
//Debug.LogWarning("center :" + center.ToString());
//if( Mathf.Abs(fffff_LastCenterY - center.y) > 2000 )
//{
// Debug.LogError("fffff_LastCenterY 大于 2000");
//}
//fffff_LastCenterY = center.y;
bool allWithinRange = true;
float ext2 = extents * 2f;
float min = corners[0].y - itemYSpace;
float max = corners[2].y + itemYSpace;
for (int i = 0, imax = mChildren.Count; i < imax; ++i)
{
Transform t = mChildren[i];
Vector3 pos = t.localPosition;
int rowIndex = Mathf.RoundToInt((beginY - pos.y) / itemYSpace);
int tempIndex = rowIndex * rowNumber + i % rowNumber;
//realIndex = CutOffRealIndex(realIndex);
if (tempIndex >= itemCount && itemCount <= pageCount)
{
NGUITools.SetActive(t.gameObject, false, false);
allWithinRange = false;
continue;
}
float distance = t.localPosition.y - center.y;
bool bNeedRefresh = false;
if (mFirstTime && tempIndex < itemCount)
{
int iColIndex = 0;
if (rowNumber > 1 && itemXSpace > 0)
{
iColIndex = ((int)(pos.x - corners[0].x) + itemXSpace / 2) / itemXSpace - 1;
}
UpdateItem(t, tempIndex, iColIndex);
continue;
}
//往上移动时，下面的item超出了veiw的范围,然后把下面的控件移动到上面(y++++)
//计算索引，回调刷新
else if (distance < -extents)
{
while (distance < -extents)
{
pos.y += ext2; //移动到上面
distance = pos.y - center.y; //记录新距离
}
bNeedRefresh = true;
}
//往下移动时，上面的item超出了veiw的范围
else if (distance > extents)
{
while (distance > extents)
{
pos.y -= ext2;
distance = pos.y - center.y;
}
bNeedRefresh = true;
}
else if (bDirty)
{
bNeedRefresh = true;
}
rowIndex = Mathf.RoundToInt((beginY - pos.y) / itemYSpace);
int realIndex = rowIndex * rowNumber + i % rowNumber;
if (!bLoop)
{
int dataLineCount = (itemCount / rowNumber) + ((itemCount % rowNumber) != 0 ? 1 : 0);
if (rowIndex < 0 || rowIndex > dataLineCount || realIndex >= itemCount)
{
allWithinRange = false;
//NGUITools.SetActive(t.gameObject, false, false);
continue;
}
}
if (bNeedRefresh)
{
realIndex = CutOffRealIndex(realIndex);
//Debug.LogWarning("realIndex: " + realIndex.ToString());
if (realIndex >= 0 && realIndex < itemCount)
{
int a = itemXSpace - 1;
if(a == 0)
{
a = 1;
}
int iColIndex = ((int)(pos.x - corners[0].x) + itemXSpace / 2) / a;
t.localPosition = pos;
UpdateItem(t, realIndex, iColIndex);
}
else
{
allWithinRange = false;
}
}
if (cullContent && itemCount >= pageCount)
{
distance += mPanel.clipOffset.y - mTrans.localPosition.y;
if (!UICamera.IsPressed(t.gameObject))
{
bool bCull = (distance > min && distance < max);
NGUITools.SetActive(t.gameObject, bCull, false);
}
}
}
mScroll.restrictWithinPanel = !allWithinRange;
bDirty = false;
}
private void WrapHorizontalContent()
{
int lineCount = (mChildren.Count / rowNumber) + ((mChildren.Count % rowNumber) != 0 ? 1 : 0);
//拥有控件的总共大小的一半
float extents = itemXSpace * lineCount * 0.5f;
Vector3[] corners = mPanel.worldCorners;
for (int i = 0; i < 4; ++i)
{
Vector3 v = corners[i];
v = mTrans.InverseTransformPoint(v);
corners[i] = v;