protected InternalStateGeneric(TParams sourceParams, ItemsDescriptor itemsDescriptor)
{
_SourceParams = sourceParams;
_ItemsDesc = itemsDescriptor;
var lg = sourceParams.content.GetComponent <LayoutGroup>();
if (lg && lg.enabled)
{
lg.enabled = false;
Debug.Log("LayoutGroup on GameObject " + lg.name + " has beed disabled in order to use ScrollRectItemsAdapter8");
}
var contentSizeFitter = sourceParams.content.GetComponent <ContentSizeFitter>();
if (contentSizeFitter && contentSizeFitter.enabled)
{
contentSizeFitter.enabled = false;
Debug.Log("ContentSizeFitter on GameObject " + contentSizeFitter.name + " has beed disabled in order to use ScrollRectItemsAdapter8");
}
var layoutElement = sourceParams.content.GetComponent <LayoutElement>();
if (layoutElement)
{
GameObject.Destroy(layoutElement);
Debug.Log("LayoutElement on GameObject " + contentSizeFitter.name + " has beed DESTROYED in order to use ScrollRectItemsAdapter8");
}
if (sourceParams.scrollRect.horizontal)
{
startEdge = RectTransform.Edge.Left;
endEdge = RectTransform.Edge.Right;
transvStartEdge = RectTransform.Edge.Top;
_GetRTCurrentSizeFn = root => root.rect.width;
}
else
{
startEdge = RectTransform.Edge.Top;
endEdge = RectTransform.Edge.Bottom;
transvStartEdge = RectTransform.Edge.Left;
_GetRTCurrentSizeFn = root => root.rect.height;
}
_SourceParams.UpdateContentPivotFromGravityType();
CacheScrollViewInfo();
}
/// <summary>
/// <para>Initialize the adapter. This is automatically called in Start(), but it may also be called manually, if for some reason you implement Start() and don't want to call base.Start()</para>
/// <para>Will call Canvas.ForceUpdateCanvases(), Params.InitIfNeeded(), will initialize the internal state and will change the items count to 0</para>
/// <para>IMPORTANT: Do not call it in Awake(), OnEnable(), OnDisable(). OnStart() is the best place to do it.</para>
/// </summary>
public void Init()
{
Canvas.ForceUpdateCanvases();
_Params.InitIfNeeded(this);
if (_Params.Snapper)
{
_Params.Snapper.Adapter = this;
}
if (_Params.scrollRect.horizontalScrollbar != null || _Params.scrollRect.verticalScrollbar != null)
{
throw new UnityException("SRIA only works with a " + typeof(ScrollbarFixer8).Name + " component added to the Scrollbar and the ScrollRect shouldn't have any scrollbar set up in the inspector (it hooks up automatically)");
}
//Func<int, float> getSizeFn; if (_Params.scrollRect.horizontal) getSizeFn = i => GetItemWidth(i); else getSizeFn = i => GetItemHeight(i);
_ItemsDesc = new ItemsDescriptor(_Params.DefaultItemSize); //, _Params.DefaultItemSizeUsage == BaseParams.DefaultSizeUsage.PLACEHOLDER_SIZE);
_InternalState = InternalState.CreateFromSourceParamsOrThrow(_Params, _ItemsDesc);
_VisibleItems = new List <TItemViewsHolder>();
_AVGVisibleItemsCount = 0;
Refresh();
_InternalState.UpdateLastProcessedCTVirtualInsetFromParentStart();
SetVirtualAbstractNormalizedScrollPosition(1f, false); // scroll to start
_Params.scrollRect.onValueChanged.AddListener(OnScrollViewValueChanged);
if (ScrollPositionChanged != null)
{
ScrollPositionChanged(GetNormalizedPosition());
}
// Debug stuff
#if UNITY_EDITOR && !UNITY_WSA && !UNITY_WSA_10_0 // UNITY_WSA uses .net core, which SRIADebugger is not compatible with
var debugger = GameObject.FindObjectOfType <SRIADebugger>();
if (debugger)
{
debugger.InitWithAdapter(this);
}
#endif
Initialized = true;
}
/// <summary>
/// This is called during changing the items count.
/// The base implementation reinitializes the items descriptor so that all items will have the same size, specified in <see cref="BaseParams.DefaultItemSize"/>
/// If overriding the method and the item default size should remain the same as <see cref="BaseParams.DefaultItemSize"/>,
/// don't forget to call the base implementation! Otherwise, call <see cref="ItemsDescriptor.ReinitializeSizes(ItemCountChangeMode, int, int, float?)"/> with the new default size as parameter.
/// Use <see cref="ItemsDescriptor.BeginChangingItemsSizes(int)"/> before and <see cref="ItemsDescriptor.EndChangingItemsSizes()"/> after
/// setting sizes. The indices of items for which you set custom sizes must be one after another (4,5,6,7.. etc). Gaps are not allowed.
/// Use "itemsDesc[itemIndexInView] = size" syntax for setting custom sizes. In this call, <see cref="AbstractViewsHolder.ItemIndex"/> will be the same as <see cref="BaseItemViewsHolder.itemIndexInView"/>, even if looping is enabled.
/// </summary>
/// <param name="itemsDesc">The container for all the info related to items' sizes</param>
protected virtual void CollectItemsSizes(ItemCountChangeMode changeMode, int count, int indexIfInsertingOrRemoving, ItemsDescriptor itemsDesc)
{
itemsDesc.ReinitializeSizes(changeMode, count, indexIfInsertingOrRemoving, _Params.DefaultItemSize);
}
