protected override void LayOut(LoopItem loopItem) //
{
RectTransform rectTran = loopItem.transform;
int index = loopItem.index;
// LayoutRebuilder.ForceRebuildLayoutImmediate(rectTran);
var rect = rectTran.rect;
rect.height = -Mathf.Abs(rect.height);
Vector2 pos = Vector2.zero;
if (this.columns == 0) //单行
{
pos.x = (rect.width + this.halfPadding) * index + this.halfPadding; // + rect.width * .5f;
if (rectTran.anchorMax.y - rectTran.anchorMin.y >= 0.99f) //表示高度适配
{
var offsetMin = rectTran.offsetMin;
var offsetMax = rectTran.offsetMax;
offsetMin.y = halfPadding;
offsetMax.y = -halfPadding;
rectTran.offsetMin = offsetMin;
rectTran.offsetMax = offsetMax;
}
else
{
pos.y = -halfPadding;
}
}
else if (columns == 1) //单列 需要宽度适配
{
if (rectTran.anchorMax.x - rectTran.anchorMin.x >= 0.99f) //表示宽度适配
{
var offsetMin = rectTran.offsetMin;
var offsetMax = rectTran.offsetMax;
offsetMin.x = halfPadding;
offsetMax.x = -halfPadding;
rectTran.offsetMin = offsetMin;
rectTran.offsetMax = offsetMax;
}
else
{
pos.x = halfPadding;
}
pos.y = (rect.height - this.halfPadding) * index - this.halfPadding; // rect.height * .5f ;
}
else // 多行
{
int x = index % columns;
pos.x = (rect.width + this.halfPadding) * x + this.halfPadding; // + rect.width * .5f;
int y = index / columns;
pos.y = (rect.height - this.halfPadding) * y - this.halfPadding; // rect.height * .5f ;
}
rect.position = pos;
pos = pos + m_ContentLocalStart; //开始位置
loopItem.rect = rect;
rectTran.anchoredPosition3D = Vector3.zero;
rectTran.anchoredPosition = pos;
}
void OnDestroy()
{
if (clickBtn)
{
clickBtn.onClick.RemoveListener(OnSelect);
}
clickBtn = null;
loopItem = null;
loopScrollBase = null;
}
public void OnSelect(LoopItem loopItem) //选中
{
int lastIdx = m_SelectedIndex;
m_SelectedIndex = loopItem.index;
if (onSelected != null)
{
onSelected(this.parameter, loopItem.item, loopItem.index, lastIdx);
}
if (itemCommand != null && itemCommand.CanExecute(new int[] { loopItem.index, lastIdx }))
{
itemCommand.Execute(new int[] { loopItem.index, lastIdx });
}
}
protected bool InitItemStyle(LoopItem loopItem)
{
var loopItemSelect = loopItem.item.GetComponent <ILoopSelectStyle>();
if (loopItemSelect != null)
{
loopItemSelect.InitSytle(loopItem, this);
if (m_SelectedIndex == loopItem.index)
{
m_SelecteStyle = loopItemSelect;
// m_SelecteStyle.SelectedStyle();
return(true);
}
}
return(false);
}
public void OnSelect(LoopItem loopItem) //选中
{
m_LastSelectedIndex = m_SelectedIndex;
m_SelectedIndex = loopItem.index;
if (onSelected != null)
{
onSelected(this.parameter, loopItem.item, m_SelectedIndex, m_LastSelectedIndex);
}
object para = null;
if (itemParameter == null)
{
para = loopItem.item;
}
else
{
para = itemParameter;
}
if (itemCommand != null && itemCommand.CanExecute(para))
{
itemCommand.Execute(para);
}
}
///<summary> /// 布局 ///</summary> protected abstract void LayOut(LoopItem loopItem);
protected void RenderItem(LoopItem loopItem, int idx)
{
var oldRect = loopItem.rect;
var oldIdx = loopItem.index;
loopItem.index = idx;
// Debug.LogFormat ("RenderItem({1},{0})", loopItem.item, idx);
if (loopItem.item == null && onGetItem == null)
{
var trans = itemSource.GetComponent <RectTransform> ();
var item = GameObject.Instantiate(itemSource, trans.position, trans.rotation, content);
loopItem.item = item;
loopItem.transform = item.GetComponent <RectTransform> ();
if (onInstantiated != null)
{
onInstantiated(this.parameter, loopItem.item, loopItem.index);
}
var LoopItemSelect = item.GetComponent <LoopItemSelect> ();
if (LoopItemSelect != null)
{
LoopItemSelect.InitLoopItem(loopItem, this);
}
}
if (onGetItem != null)
{
var item = onGetItem(this.parameter, idx, loopItem.item, oldIdx, content); //
var rent = item.GetComponent <RectTransform> ();
if (rent.parent == null)
{
rent.SetParent(content);
rent.rotation = Quaternion.Euler(0, 0, 0);
rent.localScale = Vector3.one;
Vector3 newPos = Vector3.zero;
newPos.x = halfPadding;
rent.anchoredPosition = newPos;
}
loopItem.transform = rent;
loopItem.item = item;
var LoopItemSelect = item.GetComponent <LoopItemSelect> ();
if (LoopItemSelect != null)
{
LoopItemSelect.InitLoopItem(loopItem, this);
}
}
var gObj = loopItem.item.gameObject;
if (idx >= dataLength)
{
gObj.SetActive(false);
return;
}
else if (!gObj.activeSelf)
{
gObj.SetActive(true);
}
onItemRender(this.parameter, loopItem.item, loopItem.index); //填充内容
LayOut(loopItem);
}
void OnDestroy()
{
loopItem = null;
loopScrollBase = null;
}
public void InitLoopItem(LoopItem loopItem, ILoopSelect loopScrollBase)
{
this.loopItem = loopItem;
this.loopScrollBase = loopScrollBase;
}