private void UpdateCollapseBeforeIfPrevKidIsFirstAndSelfCollapsed(MarginsCollapse collapseAfter)
{
if (prevChildMarginInfo.IsSelfCollapsing() && prevChildMarginInfo.IsIgnoreOwnMarginTop())
{
// prevChildMarginInfo.isIgnoreOwnMarginTop() is true only if it's the first kid and is adjoined to parent margin
collapseInfo.GetCollapseBefore().JoinMargin(collapseAfter);
}
}
/// <summary>This method shall be called after child occupied area is included into parent occupied area.</summary>
public virtual void EndChildMarginsHandling(Rectangle layoutBox)
{
int childIndex = processedChildrenNum - 1;
if (RendererIsFloated(GetRendererChild(childIndex)))
{
return;
}
if (childMarginInfo != null)
{
if (firstNotEmptyKidIndex == childIndex && childMarginInfo.IsSelfCollapsing())
{
firstNotEmptyKidIndex = childIndex + 1;
}
collapseInfo.SetSelfCollapsing(collapseInfo.IsSelfCollapsing() && childMarginInfo.IsSelfCollapsing());
lastKidCollapsedAfterHasClearanceApplied = childMarginInfo.IsSelfCollapsing() && childMarginInfo.IsClearanceApplied
();
}
else
{
lastKidCollapsedAfterHasClearanceApplied = false;
collapseInfo.SetSelfCollapsing(false);
}
if (prevChildMarginInfo != null)
{
FixPrevChildOccupiedArea(childIndex);
UpdateCollapseBeforeIfPrevKidIsFirstAndSelfCollapsed(prevChildMarginInfo.GetOwnCollapseAfter());
}
if (firstNotEmptyKidIndex == childIndex && FirstChildMarginAdjoinedToParent(renderer))
{
if (!collapseInfo.IsSelfCollapsing())
{
GetRidOfCollapseArtifactsAtopOccupiedArea();
if (childMarginInfo != null)
{
ProcessUsedChildBufferSpaceOnTop(layoutBox);
}
}
}
prevChildMarginInfo = childMarginInfo;
childMarginInfo = null;
backupLayoutBox = null;
backupCollapseInfo = null;
}