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refs #501, compareByPropertyIndex (performance for sort)

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This commit is contained in:
Klaus Basan
2015-10-26 19:13:43 +01:00
committed by Mathew Sutcliffe
parent 1e57ce7ecb
commit 0c94922bd6
55 changed files with 692 additions and 131 deletions
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27
src/blackgui/models/listmodelbase.h
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@@ -16,11 +16,11 @@
#include "blackgui/models/columns.h"
#include "blackgui/models/modelfilter.h"
#include "blackmisc/worker.h"
#include "blackmisc/propertyindex.h"
#include <QAbstractItemModel>
#include <QThread>
#include <memory>
#include <iostream>
#include <type_traits>
namespace BlackGui
{
@@ -128,9 +128,8 @@ namespace BlackGui
};
//! List model
template <typename ObjectType, typename ContainerType> class CListModelBase : public CListModelBaseNonTemplate
template <typename ObjectType, typename ContainerType, bool UseCompare = false> class CListModelBase : public CListModelBaseNonTemplate
{
public:
//! Destructor
virtual ~CListModelBase() {}
@@ -249,6 +248,28 @@ namespace BlackGui
ContainerType m_containerFiltered; //!< cache for filtered container data
};
namespace Private
{
//! Sort with compare function
template<class ObjectType>
bool compareForModelSort(const ObjectType &a, const ObjectType &b, Qt::SortOrder order, const BlackMisc::CPropertyIndex &index, std::true_type)
{
int c = a.comparePropertyByIndex(b, index);
if (c == 0) { return false; }
return (order == Qt::AscendingOrder) ? (c > 0) : (c < 0);
}
//! Sort without compare function
template <typename ObjectType>
bool compareForModelSort(const ObjectType &a, const ObjectType &b, Qt::SortOrder order, const BlackMisc::CPropertyIndex &index, std::false_type)
{
Q_UNUSED(index);
BlackMisc::CVariant aQv = a.propertyByIndex(index);
BlackMisc::CVariant bQv = b.propertyByIndex(index);
return (order == Qt::AscendingOrder) ? (aQv < bQv) : (bQv < aQv);
}
} // namespace
} // namespace
} // namespace
#endif // guard