// Returns 'true' if the value is represents infinity (positive or negative).
static bool IsInfinity(double value, IRFloatingKind kind) {
return IsPositiveInfinity(value, kind) || IsNegativeInfinity(value, kind);
}
CSize CXTPMarkupGrid::MeasureOverride(CXTPMarkupDrawingContext* pDC, CSize constraint)
{
CSize size(0, 0);
if (m_pColumnDefinitions->GetCount() == 0 && m_pRowDefinitions->GetCount() == 0)
{
int nCount = m_pChildren->GetCount();
for (int i = 0; i < nCount; i++)
{
CXTPMarkupUIElement* pElement = m_pChildren->GetItem(i);
if (pElement == NULL)
continue;
pElement->Measure(pDC, constraint);
size.cx = max(size.cx, pElement->GetDesiredSize().cx);
size.cy = max(size.cy, pElement->GetDesiredSize().cy);
}
return size;
}
BOOL bTreatStarAsAuto = IsPositiveInfinity(constraint.cx);
BOOL bFlag2 = IsPositiveInfinity(constraint.cy);
ValidateDefinitions();
ValidateDefinitionsLayout(m_pDefinitionsU, bTreatStarAsAuto);
ValidateDefinitionsLayout(m_pDefinitionsV, bFlag2);
ValidateCells();
MeasureCellsGroup(pDC, m_nCellGroup[0], constraint, FALSE, FALSE);
if (!m_bHasGroup2CellsInAutoRows)
{
if (m_bHasStarCellsV)
{
ResolveStar(m_pDefinitionsV, constraint.cy);
}
MeasureCellsGroup(pDC, m_nCellGroup[1], constraint, FALSE, FALSE);
if (m_bHasStarCellsU)
{
ResolveStar(m_pDefinitionsU, constraint.cx);
}
MeasureCellsGroup(pDC, m_nCellGroup[2], constraint, FALSE, FALSE);
}
else if (m_nCellGroup[1] > GetChildren()->GetCount())
{
if (m_bHasStarCellsU)
{
ResolveStar(m_pDefinitionsU, constraint.cx);
}
MeasureCellsGroup(pDC, m_nCellGroup[2], constraint, FALSE, FALSE);
if (m_bHasStarCellsV)
{
ResolveStar(m_pDefinitionsV, constraint.cy);
}
}
else
{
MeasureCellsGroup(pDC, m_nCellGroup[1], constraint, FALSE, TRUE);
if (m_bHasStarCellsU)
{
ResolveStar(m_pDefinitionsU, constraint.cx);
}
MeasureCellsGroup(pDC, m_nCellGroup[2], constraint, FALSE, FALSE);
if (m_bHasStarCellsV)
{
ResolveStar(m_pDefinitionsV, constraint.cy);
}
MeasureCellsGroup(pDC, m_nCellGroup[1], constraint, TRUE, FALSE);
}
MeasureCellsGroup(pDC, m_nCellGroup[3], constraint, FALSE, FALSE);
size = CSize(CalculateDesiredSize(m_pDefinitionsU), CalculateDesiredSize(m_pDefinitionsV));
return size;
}
static bool IsPositiveInfinity(FloatConstant* value) {
return IsPositiveInfinity(value->Value(), value->GetType()->GetSubtype());
}
