// static RenderElement HitTestOnPreviousChain(HitChain hitPointChain, HitChain previousChain, int x, int y)
// {
//#if DEBUG
// if (hitPointChain == previousChain)
// {
// throw new NotSupportedException();
// }
//#endif
// if (previousChain.Count > 0)
// {
// previousChain.SetStartTestPoint(x, y);
// //test on prev chain top to bottom
// int j = previousChain.Count;
// for (int i = 0; i < j; ++i)
// {
// HitInfo hitInfo = previousChain.GetHitInfo(i);
// RenderElement elem = hitInfo.HitElemAsRenderElement;
// if (elem != null && elem.VisibleAndHasParent)
// {
// if (elem.Contains(hitInfo.point))
// {
// RenderElement found = elem.FindUnderlyingSiblingAtPoint(hitInfo.point);
// if (found == null)
// {
// Point leftTop = elem.Location;
// hitPointChain.OffsetTestPoint(leftTop.X, leftTop.Y);
// hitPointChain.AddHitObject(elem);
// //add to chain
// }
// else
// {
// break;
// }
// }
// }
// else
// {
// break;
// }
// }
// }
// //---------------------------------
// if (hitPointChain.Count > 0)
// {
// var commonElement = hitPointChain.GetHitInfo(hitPointChain.Count - 1).HitElemAsRenderElement;
// hitPointChain.RemoveCurrentHit();
// return commonElement;
// }
// else
// {
// return null;
// }
// }
void HitTestCoreWithPrevChainHint(HitChain hitChain, HitChain previousChain, int x, int y)
{
//---------------------------------
//test on previous chain first , find common element
hitChain.Reset();
hitChain.SetStartTestPoint(x, y);
#if DEBUG
hitChain.dbugHitPhase = _dbugHitChainPhase;
#endif
//if (this.dbugId > 0 && isDragging && previousChain.Count > 1)
//{
//}
//RenderElement commonElement = HitTestOnPreviousChain(hitPointChain, previousChain, x, y);
//temp fix
//TODO: fix bug on HitTestOnPreviousChain()
RenderElement commonElement = _topRenderElement;
commonElement.HitTestCore(hitChain);
//remove disable elements
//if (hitPointChain.dbugHitPhase == dbugHitChainPhase.MouseDown)
//{
int j = hitChain.Count;
for (int i = 0; i < j; ++i)
{
HitInfo info = hitChain.GetHitInfo(i);
RenderElement renderE = info.HitElemAsRenderElement;
if (renderE != null && renderE.GetController() is IUIEventListener ui && !ui.Enabled)
{
HitChain.UnsafeClear(hitChain);
break;//stop loop and exit
}
}
//}
}