示例#1
0
// Convert a QVariantHash to a dict of Python objects.
static PyObject *convert_hash(const Chimera *ct, const QVariantHash &value)
{
    PyObject *dict = PyDict_New();

    if (!dict)
        return 0;

    for (QVariantHash::const_iterator it = value.constBegin(); it != value.constEnd(); ++it)
    {
        if (add_variant_to_dict(ct, dict, it.key(), it.value()) < 0)
        {
            Py_DECREF(dict);
            return 0;
        }
    }

    return dict;
}
示例#2
0
// Convert a C++ object at an arbitary address to Python.
PyObject *Chimera::toPyObject(void *cpp) const
{
    if (_metatype == PyQt_PyObject::metatype)
    {
        if (_type)
        {
            // SIP knows the type (therefore it isn't really wrapped in a
            // PyQt_PyObject) but it's not registered with Qt.
            if (_name.endsWith('*'))
                cpp = *reinterpret_cast<void **>(cpp);

            return sipConvertFromType(cpp, _type, 0);
        }
        else
        {
            // Otherwise unwrap the Python object.
            PyQt_PyObject *pyobj_wrapper = reinterpret_cast<PyQt_PyObject *>(cpp);

            if (!pyobj_wrapper->pyobject)
            {
                PyErr_SetString(PyExc_TypeError,
                        "unable to convert a QVariant back to a Python object");

                return 0;
            }

            Py_INCREF(pyobj_wrapper->pyobject);

            return pyobj_wrapper->pyobject;
        }
    }

    PyObject *py = 0;

    switch (_metatype)
    {
    case QMetaType::Bool:
        py = PyBool_FromLong(*reinterpret_cast<bool *>(cpp));
        break;

    case QMetaType::Int:
        if (isFlag())
        {
            py = sipConvertFromType(cpp, _type, 0);
        }
        else if (isEnum())
        {
            py = sipConvertFromEnum(*reinterpret_cast<int *>(cpp), _type);
        }
        else
        {
            py = SIPLong_FromLong(*reinterpret_cast<int *>(cpp));
        }

        break;

    case QMetaType::UInt:
        {
            long ui = *reinterpret_cast<unsigned int *>(cpp);

            if (ui < 0)
                py = PyLong_FromUnsignedLong((unsigned long)ui);
            else
                py = SIPLong_FromLong(ui);

            break;
        }

    case QMetaType::Double:
        py = PyFloat_FromDouble(*reinterpret_cast<double *>(cpp));
        break;

    case QMetaType::VoidStar:
        py = sipConvertFromVoidPtr(*reinterpret_cast<void **>(cpp));
        break;

    case QMetaType::Long:
        py = SIPLong_FromLong(*reinterpret_cast<long *>(cpp));
        break;

    case QMetaType::LongLong:
        py = PyLong_FromLongLong(*reinterpret_cast<qlonglong *>(cpp));
        break;

    case QMetaType::Short:
        py = SIPLong_FromLong(*reinterpret_cast<short *>(cpp));
        break;

    case QMetaType::Char:
    case QMetaType::UChar:
        py = SIPBytes_FromStringAndSize(reinterpret_cast<char *>(cpp), 1);
        break;

    case QMetaType::ULong:
        py = PyLong_FromUnsignedLong(*reinterpret_cast<unsigned long *>(cpp));
        break;

    case QMetaType::ULongLong:
        py = PyLong_FromUnsignedLongLong(*reinterpret_cast<qulonglong *>(cpp));
        break;

    case QMetaType::UShort:
        py = SIPLong_FromLong(*reinterpret_cast<unsigned short *>(cpp));
        break;

    case QMetaType::Float:
        py = PyFloat_FromDouble(*reinterpret_cast<float *>(cpp));
        break;

    case QMetaType::QObjectStar:
        py = sipConvertFromType(*reinterpret_cast<void **>(cpp),
                sipType_QObject, 0);
        break;

    case QMetaType::QWidgetStar:
        if (sipType_QWidget)
            py = sipConvertFromType(*reinterpret_cast<void **>(cpp),
                    sipType_QWidget, 0);

        break;

    case QMetaType::QVariantList:
        {
            QVariantList *ql = reinterpret_cast<QVariantList *>(cpp);

            py = PyList_New(ql->size());

            if (py)
            {
                for (int i = 0; i < ql->size(); ++i)
                {
                    PyObject *val_obj = toAnyPyObject(ql->at(i));

                    if (!val_obj)
                    {
                        Py_DECREF(py);
                        py = 0;

                        break;
                    }

                    PyList_SET_ITEM(py, i, val_obj);
                }
            }

            break;
        }

    case QMetaType::QVariantMap:
        {
            py = PyDict_New();

            if (py)
            {
                QVariantMap *qm = reinterpret_cast<QVariantMap *>(cpp);

                for (QVariantMap::const_iterator it = qm->constBegin(); it != qm->constEnd(); ++it)
                    if (!add_variant_to_dict(py, it.key(), it.value()))
                    {
                        Py_DECREF(py);
                        py = 0;

                        break;
                    }
            }

            break;
        }

#if QT_VERSION >= 0x040500
    case QMetaType::QVariantHash:
        {
            py = PyDict_New();

            if (py)
            {
                QVariantHash *qh = reinterpret_cast<QVariantHash *>(cpp);

                for (QVariantHash::const_iterator it = qh->constBegin(); it != qh->constEnd(); ++it)
                    if (!add_variant_to_dict(py, it.key(), it.value()))
                    {
                        Py_DECREF(py);
                        py = 0;

                        break;
                    }
            }

            break;
        }
#endif

    case -1:
        {
            char *s = *reinterpret_cast<char **>(cpp);

            if (s)
            {
                py = SIPBytes_FromString(s);
            }
            else
            {
                Py_INCREF(Py_None);
                py = Py_None;
            }

            break;
        }

    default:
        if (_type)
        {
            if (_name.endsWith('*'))
            {
                py = sipConvertFromType(*reinterpret_cast<void **>(cpp),
                        _type, 0);
            }
            else
            {
                // Make a copy as it is a value type.
                void *copy = QMetaType::construct(_metatype, cpp);

                py = sipConvertFromNewType(copy, _type, 0);

                if (!py)
                    QMetaType::destroy(_metatype, copy);
            }
        }
    }

    if (!py)
        PyErr_Format(PyExc_TypeError,
                "unable to convert a C++ '%s' instance to a Python object",
                _name.constData());

    return py;
}