public bool ShouldContinueFillingUpSpace(
ElementType elementType,
int elementIndex,
LayoutReference referenceInformation,
Rect windowToFill)
{
bool shouldContinue = false;
global::System.Diagnostics.Debug.Assert(elementType == ElementType.ItemContainer);
if (referenceInformation.RelativeLocation == ReferenceIdentity.Myself)
{
// always do yourself
shouldContinue = true;
}
else
{
int stackingLines = 0;
int virtualizingLine = 0;
int stackingLine = 0;
int visualIndex = m_indexCorrectionTable.ActualIndexToVisualIndex(elementIndex);
DetermineLineInformation(visualIndex, out stackingLines, out virtualizingLine, out stackingLine);
if (referenceInformation.RelativeLocation == ReferenceIdentity.BeforeMe)
{
if (stackingLine == 0)
{
// we're in a new row, so is there room to the bottom?
shouldContinue = PointFromRectInVirtualizingDirection(windowToFill) + SizeFromRectInVirtualizingDirection(windowToFill)
> PointFromRectInVirtualizingDirection(referenceInformation.ReferenceBounds) + SizeFromRectInVirtualizingDirection(referenceInformation.ReferenceBounds);
}
else
{
shouldContinue = PointFromRectInVirtualizingDirection(windowToFill) + SizeFromRectInVirtualizingDirection(windowToFill) > PointFromRectInVirtualizingDirection(referenceInformation.ReferenceBounds);
}
}
else // AfterMe
{
if (stackingLine == stackingLines - 1)
{
// we're a container that is at the end of a column
shouldContinue = PointFromRectInVirtualizingDirection(windowToFill) < PointFromRectInVirtualizingDirection(referenceInformation.ReferenceBounds);
}
else
{
shouldContinue = PointFromRectInVirtualizingDirection(windowToFill) < PointFromRectInVirtualizingDirection(referenceInformation.ReferenceBounds) + SizeInVirtualizingDirection(m_cellSize);
}
}
}
return(shouldContinue);
}
GetElementBounds(
ElementType elementType,
int elementIndex,
Size containerDesiredSize,
LayoutReference referenceInformation,
Rect windowConstraint)
{
global::System.Diagnostics.Debug.Assert(elementType == ElementType.ItemContainer);
// Nongrouping, this is exact and we don't even need the reference position
return(GetItemBounds(elementIndex));
}