C++ CItem::GetSize方法代码示例

LONGLONG CItem::GetProgressPosDrive() const
{
	LONGLONG pos = GetSize();

	CItem *fs = FindFreeSpaceItem();
	if (fs != NULL)
	{
		pos -= fs->GetSize();
	}

	return pos;
}

void CItem::UpdateFreeSpaceItem()
{
	ASSERT(GetType() == IT_DRIVE);

	if (!GetDocument()->OptionShowFreeSpace())
		return;

	CItem *freeSpaceItem = FindFreeSpaceItem();
	ASSERT(freeSpaceItem != NULL);

	LONGLONG total;
	LONGLONG free;
	MyGetDiskFreeSpace(GetPath(), total, free);

	LONGLONG before = freeSpaceItem->GetSize();
	LONGLONG diff = free - before;

	freeSpaceItem->UpwardAddSize(diff);
	
	ASSERT(freeSpaceItem->GetSize() == free);
}

void CItem::RemoveUnknownItem()
{
	ASSERT(GetType() == IT_DRIVE);

	UpwardSetUndone();

	int i = FindUnknownItemIndex();
	ASSERT(i < GetChildrenCount());

	CItem *unknown = GetChild(i);

	UpwardAddSize(-unknown->GetSize());

	RemoveChild(i);
}

void CItem::RemoveFreeSpaceItem()
{
	ASSERT(GetType() == IT_DRIVE);

	UpwardSetUndone();

	int i = FindFreeSpaceItemIndex();
	ASSERT(i < GetChildrenCount());

	CItem *freespace = GetChild(i);

	UpwardAddSize(-freespace->GetSize());

	RemoveChild(i);
}

void CItem::UpwardSetUndone()
{
	if (GetType() == IT_DRIVE && IsDone() && GetDocument()->OptionShowUnknown())
	{
		int i;
		for (i=0; i < GetChildrenCount(); i++)
			if (GetChild(i)->GetType() == IT_UNKNOWN)
				break;
		CItem *unknown = GetChild(i);

		UpwardAddSize(- unknown->GetSize());

		unknown->SetSize(0);
	}

	m_done = false; 

	if (GetParent() != NULL)
		GetParent()->UpwardSetUndone();
}

int CItem::CompareSibling(const CTreeListItem *tlib, int subitem) const
{ 
	CItem *other = (CItem *)tlib;

	int r=0;
	switch (subitem)
	{
	case COL_NAME:
		if (GetType() == IT_DRIVE)
		{
			ASSERT(other->GetType() == IT_DRIVE);
			r = signum(GetPath().CompareNoCase(other->GetPath()));
		}
		else
		{
			r = signum(m_name.CompareNoCase(other->m_name));
		}
		break;

	case COL_SUBTREEPERCENTAGE:
		if (MustShowReadJobs())
			r = signum(m_readJobs - other->m_readJobs);
		else
			r = signum(GetFraction() - other->GetFraction());
		break;

	case COL_PERCENTAGE:
		r = signum(GetFraction() - other->GetFraction());
		break;

	case COL_SUBTREETOTAL:
		r = signum(GetSize() - other->GetSize());
		break;

	case COL_ITEMS:
		r = signum(GetItemsCount() - other->GetItemsCount());
		break;

	case COL_FILES:
		r = signum(GetFilesCount() - other->GetFilesCount());
		break;

	case COL_SUBDIRS:
		r = signum(GetSubdirsCount() - other->GetSubdirsCount());
		break;

	case COL_LASTCHANGE:
		{
			if (m_lastChange < other->m_lastChange)
				return -1;
			else if (m_lastChange == other->m_lastChange)
				return 0;
			else 
				return 1;
		}
		break;
	case COL_ATTRIBUTES:
		r = signum(GetSortAttributes() - other->GetSortAttributes());
		break;

	default:
		ASSERT(false);
		break;
	}
	return r;
}