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Use a template function instead of a macro

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This commit is contained in:
David Sansome 2011-07-26 13:22:23 +01:00
parent c366f722fb
commit b628c2a26e
2 changed files with 22 additions and 21 deletions
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41
src/core/multisortfilterproxy.cpp
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@ -17,7 +17,7 @@ void MultiSortFilterProxy::AddSortSpec(int role, Qt::SortOrder order) {
bool MultiSortFilterProxy::lessThan(const QModelIndex& left,
const QModelIndex& right) const {
foreach (const SortSpec& spec, sorting_) {
const int ret = compare(left.data(spec.first), right.data(spec.first));
const int ret = Compare(left.data(spec.first), right.data(spec.first));
if (ret < 0) {
return spec.second == Qt::AscendingOrder;
@ -29,28 +29,31 @@ bool MultiSortFilterProxy::lessThan(const QModelIndex& left,
return left.row() < right.row();
}
int MultiSortFilterProxy::compare(const QVariant& left, const QVariant& right) const {
template <typename T>
static inline int DoCompare(T left, T right) {
if (left < right)
return -1;
if (left > right)
return 1;
return 0;
}
int MultiSortFilterProxy::Compare(const QVariant& left, const QVariant& right) const {
// Copied from the QSortFilterProxyModel::lessThan implementation, but returns
// -1, 0 or 1 instead of true or false.
#define docompare(left, right) \
if (left < right) return -1; \
if (left > right) return 1; \
return 0;
switch (left.userType()) {
case QVariant::Invalid:
return (right.type() != QVariant::Invalid) ? -1 : 0;
case QVariant::Int: docompare(left.toInt(), right.toInt());
case QVariant::UInt: docompare(left.toUInt(), right.toUInt());
case QVariant::LongLong: docompare(left.toLongLong(), right.toLongLong());
case QVariant::ULongLong: docompare(left.toULongLong(), right.toULongLong());
case QMetaType::Float: docompare(left.toFloat(), right.toFloat());
case QVariant::Double: docompare(left.toDouble(), right.toDouble());
case QVariant::Char: docompare(left.toChar(), right.toChar());
case QVariant::Date: docompare(left.toDate(), right.toDate());
case QVariant::Time: docompare(left.toTime(), right.toTime());
case QVariant::DateTime: docompare(left.toDateTime(), right.toDateTime());
case QVariant::Int: return DoCompare(left.toInt(), right.toInt());
case QVariant::UInt: return DoCompare(left.toUInt(), right.toUInt());
case QVariant::LongLong: return DoCompare(left.toLongLong(), right.toLongLong());
case QVariant::ULongLong: return DoCompare(left.toULongLong(), right.toULongLong());
case QMetaType::Float: return DoCompare(left.toFloat(), right.toFloat());
case QVariant::Double: return DoCompare(left.toDouble(), right.toDouble());
case QVariant::Char: return DoCompare(left.toChar(), right.toChar());
case QVariant::Date: return DoCompare(left.toDate(), right.toDate());
case QVariant::Time: return DoCompare(left.toTime(), right.toTime());
case QVariant::DateTime: return DoCompare(left.toDateTime(), right.toDateTime());
case QVariant::String:
default:
if (isSortLocaleAware())
@ -59,7 +62,5 @@ int MultiSortFilterProxy::compare(const QVariant& left, const QVariant& right) c
return left.toString().compare(right.toString(), sortCaseSensitivity());
}
#undef docompare
return 0;
}

2
src/core/multisortfilterproxy.h
View File

@ -13,7 +13,7 @@ protected:
bool lessThan(const QModelIndex& left, const QModelIndex& right) const;
private:
int compare(const QVariant& left, const QVariant& right) const;
int Compare(const QVariant& left, const QVariant& right) const;
typedef QPair<int, Qt::SortOrder> SortSpec;
QList<SortSpec> sorting_;