//reset the layout param, such as column count, item width/height,padding size
public void ResetGridViewLayoutParam(int itemTotalCount, GridViewLayoutParam layoutParam)
{
if (mListViewInited == false)
{
Debug.LogError("ResetLayoutParam can not use before LoopStaggeredGridView.InitListView are called!");
return;
}
mScrollRect.StopMovement();
SetListItemCount(0, true);
RecycleAllItem();
ClearAllTmpRecycledItem();
mLayoutParam = layoutParam;
if (mLayoutParam == null)
{
Debug.LogError("layoutParam can not be null!");
return;
}
if (mLayoutParam.CheckParam() == false)
{
return;
}
mGroupCount = mLayoutParam.mColumnOrRowCount;
mViewPortRectTransform.GetLocalCorners(mViewPortRectLocalCorners);
mContainerTrans.anchoredPosition3D = Vector3.zero;
mItemTotalCount = itemTotalCount;
UpdateLayoutParamAutoValue();
mItemGroupList.Clear();
for (int i = 0; i < mGroupCount; ++i)
{
StaggeredGridItemGroup group = new StaggeredGridItemGroup();
group.Init(this, mItemTotalCount, i, GetNewItemByGroupAndIndex);
mItemGroupList.Add(group);
}
UpdateContentSize();
}
/*
* InitListView method is to initiate the LoopStaggeredGridView component. There are 4 parameters:
* itemTotalCount: the total item count in the scrollview, this parameter should be >=0.
* layoutParam: this class is very sample, and you need new a GridViewLayoutParam instance and set the values you want.
* onGetItemByItemIndex: when an item is getting in the scrollrect viewport, this Action will be called with the item’ index as a parameter, to let you create the item and update its content.
* LoopStaggeredGridViewItem is the return value of onGetItemByItemIndex
* Every created item has a LoopStaggeredGridViewItem component auto attached
*/
public void InitListView(int itemTotalCount, GridViewLayoutParam layoutParam,
System.Func <LoopStaggeredGridView, int, LoopStaggeredGridViewItem> onGetItemByItemIndex,
StaggeredGridViewInitParam initParam = null)
{
mLayoutParam = layoutParam;
if (mLayoutParam == null)
{
Debug.LogError("layoutParam can not be null!");
return;
}
if (mLayoutParam.CheckParam() == false)
{
return;
}
if (initParam != null)
{
mDistanceForRecycle0 = initParam.mDistanceForRecycle0;
mDistanceForNew0 = initParam.mDistanceForNew0;
mDistanceForRecycle1 = initParam.mDistanceForRecycle1;
mDistanceForNew1 = initParam.mDistanceForNew1;
mItemDefaultWithPaddingSize = initParam.mItemDefaultWithPaddingSize;
}
mScrollRect = gameObject.GetComponent <ScrollRect>();
if (mScrollRect == null)
{
Debug.LogError("LoopStaggeredGridView Init Failed! ScrollRect component not found!");
return;
}
if (mDistanceForRecycle0 <= mDistanceForNew0)
{
Debug.LogError("mDistanceForRecycle0 should be bigger than mDistanceForNew0");
}
if (mDistanceForRecycle1 <= mDistanceForNew1)
{
Debug.LogError("mDistanceForRecycle1 should be bigger than mDistanceForNew1");
}
mScrollRectTransform = mScrollRect.GetComponent <RectTransform>();
mContainerTrans = mScrollRect.content;
mViewPortRectTransform = mScrollRect.viewport;
mGroupCount = mLayoutParam.mColumnOrRowCount;
if (mViewPortRectTransform == null)
{
mViewPortRectTransform = mScrollRectTransform;
}
if (mScrollRect.horizontalScrollbarVisibility == ScrollRect.ScrollbarVisibility.AutoHideAndExpandViewport && mScrollRect.horizontalScrollbar != null)
{
Debug.LogError("ScrollRect.horizontalScrollbarVisibility cannot be set to AutoHideAndExpandViewport");
}
if (mScrollRect.verticalScrollbarVisibility == ScrollRect.ScrollbarVisibility.AutoHideAndExpandViewport && mScrollRect.verticalScrollbar != null)
{
Debug.LogError("ScrollRect.verticalScrollbarVisibility cannot be set to AutoHideAndExpandViewport");
}
mIsVertList = (mArrangeType == ListItemArrangeType.TopToBottom || mArrangeType == ListItemArrangeType.BottomToTop);
mScrollRect.horizontal = !mIsVertList;
mScrollRect.vertical = mIsVertList;
AdjustPivot(mViewPortRectTransform);
AdjustAnchor(mContainerTrans);
AdjustContainerPivot(mContainerTrans);
InitItemPool();
mOnGetItemByItemIndex = onGetItemByItemIndex;
if (mListViewInited == true)
{
Debug.LogError("LoopStaggeredGridView.InitListView method can be called only once.");
}
mListViewInited = true;
mViewPortRectTransform.GetLocalCorners(mViewPortRectLocalCorners);
mContainerTrans.anchoredPosition3D = Vector3.zero;
mItemTotalCount = itemTotalCount;
UpdateLayoutParamAutoValue();
mItemGroupList.Clear();
for (int i = 0; i < mGroupCount; ++i)
{
StaggeredGridItemGroup group = new StaggeredGridItemGroup();
group.Init(this, mItemTotalCount, i, GetNewItemByGroupAndIndex);
mItemGroupList.Add(group);
}
UpdateContentSize();
}