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// This implements the helpers for QPyNullVariant.
//
// Copyright (c) 2016 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of PyQt4.
//
// This file may be used under the terms of the GNU General Public License
// version 3.0 as published by the Free Software Foundation and appearing in
// the file LICENSE included in the packaging of this file. Please review the
// following information to ensure the GNU General Public License version 3.0
// requirements will be met: http://www.gnu.org/copyleft/gpl.html.
//
// If you do not wish to use this file under the terms of the GPL version 3.0
// then you may purchase a commercial license. For more information contact
// info@riverbankcomputing.com.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#include <Python.h>
#include <QByteArray>
#include <QDate>
#include <QDateTime>
#include <QLine>
#include <QLineF>
#include <QPoint>
#include <QPointF>
#include <QRect>
#include <QRectF>
#include <QSize>
#include <QSizeF>
#include <QTime>
#include <QVariant>
#include "qpycore_chimera.h"
#include "qpycore_qpynullvariant.h"
#include "qpycore_sip.h"
// Create a null QVariant.
QVariant *qpycore_qpynullvariant(PyObject *type)
{
// Parse the type.
const Chimera *ct = Chimera::parse(type);
if (!ct)
return 0;
int metatype = ct->metatype();
delete ct;
// We can only create null QVariants of the core types.
if (metatype >= static_cast<int>(QVariant::UserType))
{
PyErr_SetString(PyExc_TypeError,
"can only create QPyNullVariant for types corresponding to "
"QVariant.Type");
return 0;
}
return new QVariant(static_cast<QVariant::Type>(metatype));
}
// Convert a null QVariant to a Python object as part of the v2 API.
PyObject *qpycore_qpynullvariant_FromQVariant(const QVariant &var)
{
sipTypeDef *td;
void *cpp;
// If the C++ type of the QVariant has an isNull() method then create a
// null instance of that type. Otherwise create a QPyNullVariant. The
// exception is QString where we create a QPyNullVariant even though it has
// an isNull() method. This is because the QString v2 API converts a null
// QString to an empty Python string (because Qt often returns a null
// QString when it should really return an empty QString and if we didn't
// hide that then it would be a pain for the programmer).
switch (var.type())
{
case QVariant::Date:
td = sipType_QDate;
cpp = new QDate;
break;
case QVariant::Time:
td = sipType_QTime;
cpp = new QTime;
break;
case QVariant::DateTime:
td = sipType_QDateTime;
cpp = new QDateTime;
break;
case QVariant::ByteArray:
td = sipType_QByteArray;
cpp = new QByteArray;
break;
case QVariant::Size:
td = sipType_QSize;
cpp = new QSize;
break;
case QVariant::SizeF:
td = sipType_QSizeF;
cpp = new QSizeF;
break;
case QVariant::Rect:
td = sipType_QRect;
cpp = new QRect;
break;
case QVariant::RectF:
td = sipType_QRectF;
cpp = new QRectF;
break;
case QVariant::Line:
td = sipType_QLine;
cpp = new QLine;
break;
case QVariant::LineF:
td = sipType_QLineF;
cpp = new QLineF;
break;
case QVariant::Point:
td = sipType_QPoint;
cpp = new QPoint;
break;
case QVariant::PointF:
td = sipType_QPointF;
cpp = new QPointF;
break;
default:
td = sipType_QPyNullVariant;
cpp = new QVariant(var);
}
return sipConvertFromNewType(cpp, td, 0);
}
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