private MarginsCollapseInfo CreateMarginsInfoForBlockChild(int childIndex)
{
bool ignoreChildTopMargin = false;
// always assume that current child might be the last on this area
bool ignoreChildBottomMargin = LastChildMarginAdjoinedToParent(renderer);
if (childIndex == firstNotEmptyKidIndex)
{
ignoreChildTopMargin = FirstChildMarginAdjoinedToParent(renderer);
}
MarginsCollapse childCollapseBefore;
if (childIndex == 0)
{
MarginsCollapse parentCollapseBefore = collapseInfo.GetCollapseBefore();
childCollapseBefore = ignoreChildTopMargin ? parentCollapseBefore : new MarginsCollapse();
}
else
{
MarginsCollapse prevChildCollapseAfter = prevChildMarginInfo != null?prevChildMarginInfo.GetOwnCollapseAfter
() : null;
childCollapseBefore = prevChildCollapseAfter != null ? prevChildCollapseAfter : new MarginsCollapse();
}
MarginsCollapse parentCollapseAfter = collapseInfo.GetCollapseAfter().Clone();
MarginsCollapse childCollapseAfter = ignoreChildBottomMargin ? parentCollapseAfter : new MarginsCollapse();
MarginsCollapseInfo childMarginsInfo = new MarginsCollapseInfo(ignoreChildTopMargin, ignoreChildBottomMargin
, childCollapseBefore, childCollapseAfter);
if (ignoreChildTopMargin && childIndex == firstNotEmptyKidIndex)
{
childMarginsInfo.SetBufferSpaceOnTop(collapseInfo.GetBufferSpaceOnTop());
}
if (ignoreChildBottomMargin)
{
childMarginsInfo.SetBufferSpaceOnBottom(collapseInfo.GetBufferSpaceOnBottom());
}
return(childMarginsInfo);
}
public virtual void ProcessFixedHeightAdjustment(float heightDelta)
{
collapseInfo.SetBufferSpaceOnTop(collapseInfo.GetBufferSpaceOnTop() + heightDelta);
collapseInfo.SetBufferSpaceOnBottom(collapseInfo.GetBufferSpaceOnBottom() + heightDelta);
}