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/*
* This file is part of the Shiboken Python Bindings Generator project.
*
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
*
* Contact: PySide team <contact@pyside.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "pysideqmlregistertype.h"
#include <Python.h>
#include <QObject>
#include <QDeclarativeEngine>
#include <QMutex>
#include <typeresolver.h>
#include "qdeclarativeitem_wrapper.h"
#include <sbkdbg.h>
#ifndef PYSIDE_MAX_QML_TYPES
// Maximum number of different types the user cna export to QML using qmlRegisterType.
#define PYSIDE_MAX_QML_TYPES 50
#endif
// All registered python types
static PyObject* pyTypes[PYSIDE_MAX_QML_TYPES];
static void (*createFuncs[PYSIDE_MAX_QML_TYPES])(void*);
/// QDeclarativeItem will create objects using placement new then this pointer is non-null.
void* PySide::nextQmlElementMemoryAddr = 0;
// Mutex used to avoid race condition on PySide::nextQmlElementMemoryAddr
static QMutex nextQmlElementMutex;
template<int N>
struct ElementFactoryBase
{
static void createInto(void* memory)
{
QMutexLocker locker(&nextQmlElementMutex);
PySide::nextQmlElementMemoryAddr = memory;
PyObject* obj = PyObject_CallObject(pyTypes[N], 0);
if (!obj || PyErr_Occurred())
PyErr_Print();
PySide::nextQmlElementMemoryAddr = 0;
}
};
template<int N>
struct ElementFactory : ElementFactoryBase<N>
{
static void init()
{
createFuncs[N] = &ElementFactoryBase<N>::createInto;
ElementFactory<N-1>::init();
}
};
template<>
struct ElementFactory<0> : ElementFactoryBase<0>
{
static void init()
{
createFuncs[0] = &ElementFactoryBase<0>::createInto;
}
};
void PySide::initQmlSupport()
{
ElementFactory<PYSIDE_MAX_QML_TYPES - 1>::init();
}
int PySide::qmlRegisterType(PyObject* pyObj, const char* uri, int versionMajor, int versionMinor, const char* qmlName)
{
using namespace Shiboken;
static PyTypeObject* declarativeItemType = TypeResolver::get("QDeclarativeItem*")->pythonType();
assert(declarativeItemType);
static int nextType = 0;
if (nextType >= PYSIDE_MAX_QML_TYPES) {
PyErr_Format(PyExc_TypeError, "QML doesn't really like language bindings, so you can only export %d types to QML.", PYSIDE_MAX_QML_TYPES);
return -1;
}
if (pyObj->ob_type != &SbkObjectType_Type) {
PyErr_Format(PyExc_TypeError, "A shiboken-based python type expected, got %s.", pyObj->ob_type->tp_name);
return -1;
}
if (!PySequence_Contains(((PyTypeObject*)pyObj)->tp_mro, (PyObject*)declarativeItemType)) {
PyErr_Format(PyExc_TypeError, "A type inherited from %s expected, got %s.", declarativeItemType->tp_name, ((PyTypeObject*)pyObj)->tp_name);
return -1;
}
QMetaObject* metaObject = reinterpret_cast<QMetaObject*>(ObjectType::getTypeUserData(reinterpret_cast<SbkObjectType*>(pyObj)));
if (!metaObject) {
PyErr_SetString(PyExc_TypeError, "FIXME: metaobject not initialized, this error msg should not exists at all!!");
return -1;
}
// All ready... now the ugly code begins... :-)
pyTypes[nextType] = pyObj;
// Init proxy object static meta object
QDeclarativePrivate::RegisterType type;
type.version = 0;
type.typeId = qMetaTypeId<QDeclarativeItem*>();
type.listId = qMetaTypeId<QDeclarativeListProperty<QDeclarativeItem> >();
type.objectSize = sizeof(QDeclarativeItemWrapper);
type.create = createFuncs[nextType];
type.uri = uri;
type.versionMajor = versionMajor;
type.versionMinor = versionMinor;
type.elementName = qmlName;
type.metaObject = metaObject;
type.attachedPropertiesFunction = QDeclarativePrivate::attachedPropertiesFunc<QDeclarativeItem>();
type.attachedPropertiesMetaObject = QDeclarativePrivate::attachedPropertiesMetaObject<QDeclarativeItem>();
type.parserStatusCast = QDeclarativePrivate::StaticCastSelector<QDeclarativeItem,QDeclarativeParserStatus>::cast();
type.valueSourceCast = QDeclarativePrivate::StaticCastSelector<QDeclarativeItem,QDeclarativePropertyValueSource>::cast();
type.valueInterceptorCast = QDeclarativePrivate::StaticCastSelector<QDeclarativeItem,QDeclarativePropertyValueInterceptor>::cast();
type.extensionObjectCreate = 0;
type.extensionMetaObject = 0;
type.customParser = 0;
int qmlTypeId = QDeclarativePrivate::qmlregister(QDeclarativePrivate::TypeRegistration, &type);
++nextType;
return qmlTypeId;
}
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