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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef PYSIDEQMETATYPE_H
#define PYSIDEQMETATYPE_H
#include <QtCore/QMetaType>
namespace PySide
{
/// If the type \p T was registered on Qt meta type system with Q_DECLARE_METATYPE macro,
/// this class will initialize the meta type.
///
/// Initialize a meta type means register it on Qt meta type system, Qt itself only do this
/// on the first call of qMetaTypeId, and this is exactly what we do to init it. If we don't
/// do that, calls to QMetaType::type("QMatrix2x2") could return zero, causing QVariant to
/// not recognize some C++ types, like QMatrix2x2.
template<typename T, bool OK = QMetaTypeId<T>::Defined >
struct initQtMetaType {
initQtMetaType()
{
qMetaTypeId<T>();
}
};
// Template specialization to do nothing when the type wasn't registered on Qt meta type system.
template<typename T>
struct initQtMetaType<T, false> {
};
} //namespace PySide
#endif // PYSIDEQMETATYPE_H
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