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|
/***************************************************************************
* pythonvariant.cpp
* This file is part of the KDE project
* copyright (C)2004-2005 by Sebastian Sauer (mail@dipe.org)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
* This program 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
* Library General Public License for more details.
* You should have received a copy of the GNU Library General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
***************************************************************************/
#include "pythonvariant.h"
#include "pythonextension.h"
#include <kross/core/manager.h>
#include <kross/core/wrapperinterface.h>
#include <QtCore/QMetaType>
#include <QtCore/QVariant>
#include <QtWidgets/QWidget>
using namespace Kross;
namespace Kross {
/// \internal helper class to deal with generic QList-types.
class VoidList : public QList<void*> {
public:
VoidList() : QList<void*>() {}
VoidList(QList<void*> list, const QByteArray& typeName) : QList<void*>(list), typeName(typeName) {}
QByteArray typeName;
static void* extractVoidStar(const Py::Object& object)
{
QVariant v = PythonType<QVariant>::toVariant(object);
if( QObject* obj = v.canConvert<QWidget*>() ? qvariant_cast< QWidget* >(v) : v.canConvert(QMetaType::QObjectStar) ? qvariant_cast< QObject* >(v) : 0 ) {
if( WrapperInterface* wrapper = dynamic_cast<WrapperInterface*>(obj) )
return wrapper->wrappedObject();
return obj;
}
if( void* ptr = v.value< void* >() ) {
return ptr;
}
return 0; //TODO handle other cases?!
}
};
}
Q_DECLARE_METATYPE(Kross::VoidList)
Py::Object PythonType<QVariant>::toPyObject(const QVariant& v)
{
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject variant.toString=%1 variant.typeid=%2 variant.typeName=%3").arg(v.toString()).arg(v.type()).arg(v.typeName()) );
#endif
switch( v.type() ) {
case QVariant::Int:
return PythonType<int>::toPyObject(v.toInt());
case QVariant::UInt:
return PythonType<uint>::toPyObject(v.toUInt());
case QVariant::Double:
return PythonType<double>::toPyObject(v.toDouble());
case QVariant::ByteArray:
return PythonType<QByteArray>::toPyObject(v.toByteArray());
case QVariant::String:
return PythonType<QString>::toPyObject(v.toString());
case QVariant::Bool:
return PythonType<bool>::toPyObject(v.toBool());
case QVariant::StringList:
return PythonType<QStringList>::toPyObject(v.toStringList());
case QVariant::Map:
return PythonType<QVariantMap>::toPyObject(v.toMap());
case QVariant::List:
return PythonType<QVariantList>::toPyObject(v.toList());
case QVariant::LongLong:
return PythonType<qlonglong>::toPyObject(v.toLongLong());
case QVariant::ULongLong:
return PythonType<qlonglong>::toPyObject(v.toULongLong());
case QVariant::Size:
return PythonType<QSize>::toPyObject(v.toSize());
case QVariant::SizeF:
return PythonType<QSizeF>::toPyObject(v.toSizeF());
case QVariant::Point:
return PythonType<QPoint>::toPyObject(v.toPoint());
case QVariant::PointF:
return PythonType<QPointF>::toPyObject(v.toPointF());
case QVariant::Rect:
return PythonType<QRect>::toPyObject(v.toRect());
case QVariant::RectF:
return PythonType<QRectF>::toPyObject(v.toRectF());
case QVariant::Color:
return PythonType<QColor>::toPyObject(v.value<QColor>());
case QVariant::Url:
return PythonType<QUrl>::toPyObject(v.toUrl());
case QVariant::Date:
return PythonType<QDate>::toPyObject( v.value<QDate>() );
case QVariant::Time:
return PythonType<QTime>::toPyObject( v.value<QTime>() );
case QVariant::DateTime:
return PythonType<QDateTime>::toPyObject( v.value<QDateTime>() );
case QVariant::Invalid: {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject variant=%1 is QVariant::Invalid. Returning Py:None.").arg(v.toString()) );
#endif
//return Py::Object();
return Py::None(); //FIXME should we fall through here?
} break;
case QVariant::UserType: {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject variant=%1 is QVariant::UserType. Trying to cast now.").arg(v.toString()) );
#endif
} // fall through
default: {
if( strcmp(v.typeName(),"float") == 0 ) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject Casting '%1' to double").arg(v.typeName()) );
#endif
return PythonType<double>::toPyObject(v.toDouble());
}
if( strcmp(v.typeName(),"Kross::VoidList") == 0 ) {
VoidList list = v.value<VoidList>();
Kross::MetaTypeHandler* handler = Kross::Manager::self().metaTypeHandler(list.typeName);
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject Casting '%1' to QList<%2> with %3 items, hasHandler=%4").arg(v.typeName()).arg(list.typeName.constData()).arg(list.count()).arg(handler ? "true" : "false") );
#endif
QVariantList l;
foreach(void* ptr, list) {
if( handler ) {
l << handler->callHandler(ptr);
}
else {
QVariant v;
v.setValue(ptr);
l << v;
}
}
return PythonType<QVariantList>::toPyObject(l);
}
if (v.canConvert<Kross::Object::Ptr>()) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject Casting '%1' to Kross::Object::Ptr").arg(v.typeName()) );
#endif
Kross::Object::Ptr obj = v.value< Kross::Object::Ptr >();
Kross::PythonObject* pyobj = dynamic_cast< Kross::PythonObject* >(obj.data());
if(! obj) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject To Kross::PythonObject* casted '%1' is NULL").arg(v.typeName()) );
#endif
return Py::None();
}
return pyobj->pyObject();
}
if (v.canConvert<QWidget*>()) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject Casting '%1' to QWidget").arg(v.typeName()) );
#endif
QWidget* widget = qvariant_cast< QWidget* >(v);
if(! widget) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject To QWidget casted '%1' is NULL").arg(v.typeName()) );
#endif
return Py::None();
}
return Py::asObject(new PythonExtension(widget));
}
if (v.canConvert(QMetaType::QObjectStar)) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject Casting '%1' to QObject").arg(v.typeName()) );
#endif
QObject* obj = qvariant_cast< QObject* >(v);
if(! obj) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject To QObject casted '%1' is NULL").arg(v.typeName()) );
#endif
return Py::None();
}
return Py::asObject(new PythonExtension(obj));
}
if (v.canConvert(QMetaType::VoidStar)) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject Casting '%1' to VoidStar").arg(v.typeName()) );
#endif
PyObject* voidptr = PyLong_FromVoidPtr( (void*) qvariant_cast<void*>(v) );
return Py::asObject( voidptr );
}
//if(v.type() == QVariant::Invalid) return Py::None();
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krosswarning( QString("PythonType<QVariant>::toPyObject Not possible to convert the QVariant '%1' with type '%2' (%3) to a Py::Object.").arg(v.toString()).arg(v.typeName()).arg(v.type()) );
#endif
throw Py::TypeError( QString("Variant of type %1 can not be casted to a python object.").arg(v.typeName()).toLatin1().constData() );
}
}
}
QVariant PythonType<QVariant>::toVariant(const Py::Object& obj)
{
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toVariant str=%1").arg(obj.as_string().c_str()) );
#endif
// check for None
if(obj == Py::None())
return QVariant();
PyObject* pyobj = obj.ptr();
Q_ASSERT(pyobj);
// check for some basic buildin types
if( PyObject_TypeCheck(pyobj, &PyInt_Type) )
return PythonType<int>::toVariant(obj);
if( PyObject_TypeCheck(pyobj, &PyLong_Type) )
return PythonType<qlonglong>::toVariant(obj);
if( PyObject_TypeCheck(pyobj, &PyFloat_Type) )
return PythonType<double>::toVariant(obj);
if( PyObject_TypeCheck(pyobj, &PyBool_Type) )
return PythonType<bool>::toVariant(obj);
if( obj.isString() )
return PythonType<QString>::toVariant(obj);
if( PyObject_TypeCheck(pyobj, &PyTuple_Type) )
return PythonType<QVariantList,Py::Tuple>::toVariant(Py::Tuple(obj));
if( PyObject_TypeCheck(pyobj, &PyList_Type) )
return PythonType<QVariantList,Py::List>::toVariant(Py::List(obj));
if( PyObject_TypeCheck(pyobj, &PyDict_Type) )
return PythonType<QVariantMap,Py::Dict>::toVariant(Py::Dict(obj.ptr()));
// check if it's an extension
if(PythonExtension::check(obj.ptr())) {
Py::ExtensionObject<PythonExtension> extobj(obj);
PythonExtension* extension = extobj.extensionObject();
if(! extension) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krosswarning( QString("PythonType<QVariant>::toVariant Failed to determinate PythonExtension for object=%1").arg(obj.as_string().c_str()) );
#endif
throw Py::RuntimeError( QString("Failed to determinate PythonExtension object.").toLatin1().constData() );
}
const QVariant variant = qVariantFromValue( extension->object() );
#ifdef KROSS_PYTHON_VARIANT_DEBUG
if(extension->object())
krossdebug( QString("PythonType<QVariant>::toVariant KrossObject.objectName=%1 KrossObject.className=%2 QVariant.toString=%3 QVariant.typeName=%4").arg(extension->object()->objectName()).arg(extension->object()->metaObject()->className()).arg(variant.toString()).arg(variant.typeName()) );
else
krossdebug( QString("PythonType<QVariant>::toVariant The PythonExtension object does not have a valid QObject") );
#endif
return variant;
}
// This is a bit messy. We are only interested in instances here but newer Python versions don't care
// any longer and don't really make any difference between buildin types and class-instances. To have
// at least some kind of safety we check for the Py_TPFLAGS_HEAPTYPE flag and if defined, just put
// the PyObject into a Kross::Object then.
//PyTypeObject *type = (PyTypeObject*) obj.type().ptr(); // can throw a Py::TypeError
//if( obj.isInstance() || PyClass_Check(pytype) || PyObject_TypeCheck(pyobj, &PyBaseObject_Type) ) {
//if( PyObject_TypeCheck(pyobj, &PyBaseObject_Type) ) {
//if(obj.ptr()->ob_type->tp_flags & Py_TPFLAGS_HEAPTYPE) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toVariant convert to Kross::PythonObject") );
#endif
//return new PythonType(object);
QVariant result;
Kross::Object::Ptr p;
p = new Kross::PythonObject(obj);
result.setValue(p);
return result;
}
#if 0
Py::Object PythonType<QColor>::toPyObject(const QColor& color)
{
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QColor>::toPyObject color.name=%1").arg(color.name()) );
#endif
krossdebug( QString("....1") );
Color* c = new Color(0 /*no parent*/, color);
krossdebug( QString("....2") );
Py::Object o = Py::asObject( new PythonExtension(c, false /*owner*/) );
krossdebug( QString("....3") );
return o;
}
QColor PythonType<QColor>::toVariant(const Py::Object& obj)
{
if( PythonExtension::check(obj.ptr()) ) {
Py::ExtensionObject<PythonExtension> extobj(obj);
Q_ASSERT( extobj.extensionObject() );
Color* color = dynamic_cast< Color* >( extobj.extensionObject()->object() );
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QColor>::toVariant Color.name=%1").arg(color ? color->name() : "NULL") );
#endif
if( color ) return color->color();
}
PyTypeObject *type = (PyTypeObject*) obj.type().ptr();
if( PyType_IsSubtype(type,&PyString_Type) ) {
QString cname = PythonType<QString>::toVariant(obj);
QColor c(cname);
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QColor>::toVariant string=%1 color.name=%2").arg(cname).arg(c.name()) );
#endif
return c;
}
if( type == &PyTuple_Type || type == &PyList_Type ) {
Py::Tuple t(obj);
if( t.size() >= 3 ) {
bool f = ( ((PyTypeObject*)(t[0].type().ptr())) == &PyFloat_Type );
int r = f ? int(PythonType<double>::toVariant(t[0]) * 255.0) : PythonType<int>::toVariant(t[0]);
int g = f ? int(PythonType<double>::toVariant(t[1]) * 255.0) : PythonType<int>::toVariant(t[1]);
int b = f ? int(PythonType<double>::toVariant(t[2]) * 255.0) : PythonType<int>::toVariant(t[2]);
int a = (t.size() >= 4) ? ( f ? int(PythonType<double>::toVariant(t[3]) * 255.0) : PythonType<int>::toVariant(t[3]) ) : 255;
QColor c(r,g,b,a);
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QColor>::toVariant Tuple QColor.name=%1").arg(c.name()) );
#endif
return c;
}
}
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QColor>::toVariant empty QColor()") );
#endif
return QColor();
}
#endif
MetaType* PythonMetaTypeFactory::create(const char* typeName, const Py::Object& object, bool owner)
{
int typeId = QVariant::nameToType(typeName);
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonMetaTypeFactory::create typeName=%1 metatype.id=%2 variant.id=%3 object=%4").arg(typeName).arg(QMetaType::type(typeName)).arg(typeId).arg(object.as_string().c_str()) );
#endif
switch(typeId) {
case QVariant::Int:
return new PythonMetaTypeVariant<int>(object);
case QVariant::UInt:
return new PythonMetaTypeVariant<uint>(object);
case QVariant::Double:
return new PythonMetaTypeVariant<double>(object);
case QVariant::Bool:
return new PythonMetaTypeVariant<bool>(object);
case QVariant::ByteArray:
return new PythonMetaTypeVariant<QByteArray>(object);
case QVariant::String:
return new PythonMetaTypeVariant<QString>(object);
case QVariant::StringList:
return new PythonMetaTypeVariant<QStringList>(object);
case QVariant::Map:
return new PythonMetaTypeVariant<QVariantMap>(object);
case QVariant::List:
return new PythonMetaTypeVariant<QVariantList>(object);
case QVariant::LongLong:
return new PythonMetaTypeVariant<qlonglong>(object);
case QVariant::ULongLong:
return new PythonMetaTypeVariant<qulonglong>(object);
case QVariant::Size:
return new PythonMetaTypeVariant<QSize>(object);
case QVariant::SizeF:
return new PythonMetaTypeVariant<QSizeF>(object);
case QVariant::Point:
return new PythonMetaTypeVariant<QPoint>(object);
case QVariant::PointF:
return new PythonMetaTypeVariant<QPointF>(object);
case QVariant::Rect:
return new PythonMetaTypeVariant<QRect>(object);
case QVariant::RectF:
return new PythonMetaTypeVariant<QRectF>(object);
case QVariant::Color:
return new PythonMetaTypeVariant<QColor>(object);
case QVariant::Url:
return new PythonMetaTypeVariant<QUrl>(object);
case QVariant::Date:
return new PythonMetaTypeVariant<QDate>(object);
case QVariant::Time:
return new PythonMetaTypeVariant<QTime>(object);
case QVariant::DateTime:
return new PythonMetaTypeVariant<QDateTime>(object);
case QVariant::Invalid: // fall through
case QVariant::UserType: // fall through
default: {
if(Py::PythonExtension<PythonExtension>::check( object )) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonMetaTypeFactory::create Py::Object '%1' with typename '%2' is a PythonExtension object").arg(object.as_string().c_str()).arg(typeName) );
#endif
Py::ExtensionObject<PythonExtension> extobj(object);
PythonExtension* extension = extobj.extensionObject();
QObject* obj = extension->object();
if( ! obj )
throw Py::RuntimeError( QString("Underlying QObject instance of the PythonExtension was removed.").toLatin1().constData() );
if( WrapperInterface* wrapper = dynamic_cast<WrapperInterface*>(obj) )
return new MetaTypeVoidStar( typeId, wrapper->wrappedObject(), owner );
return new MetaTypeVoidStar( typeId, obj, owner );
}
/*
//if( metaid == QMetaType::QObjectStar )
if( metaid == qMetaTypeId<QWidget*>() ) {
if( qVariantCanConvert< QWidget* >(v) ) {
QWidget* widget = qvariant_cast< QWidget* >(v);
return new MetaTypeVoidStar( metaid, widget, false );
}
}
*/
int metaid = QMetaType::type(typeName);
if( metaid > 0 ) {
if (metaid == QMetaType::QObjectStar || metaid == qMetaTypeId<QWidget*>()) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
Py::Object pyobjtype( PyObject_Type(object.ptr()), true /* owner */ );
const QString pyobjtypename( pyobjtype.repr().as_string().c_str() );
krossdebug( QString("PythonMetaTypeFactory::create Py::Object is %1").arg(pyobjtypename) );
#endif
if( object.hasAttr("metaObject") ) {
// It seems the best way to determinate a PyQt4/PyKDE4 QObject/QWidget is by
// just looking if the passed in PyObject has a metaObject-attribute. That
// way we are sure to also catch classes that inheritate from such PyQt
// widgets. So, if the PyObject has such an attribute we try to use the
// with PyQt together delivered sip.unwrapinstance() function to fetch
// the QObject/QWidget-pointer.
try {
Py::Module mainmod( PyImport_AddModule( (char*)"sip" ) );
Py::Callable func = mainmod.getDict().getItem("unwrapinstance");
Py::Tuple arguments(1);
arguments[0] = object; //pyqtobject pointer
Py::Object result = func.apply(arguments); // call the sip.unwrapinstance function
void* ptr = PyLong_AsVoidPtr( result.ptr() ); // the result is a void* pointer to our QObject/QWidget instance
QObject* obj = 0;
if (metaid == QMetaType::QObjectStar) {
obj = static_cast<QObject*>(ptr);
} else if (metaid == qMetaTypeId<QWidget*>()) {
obj = static_cast<QWidget*>(ptr);
}
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug(QString("PythonMetaTypeFactory::create class=%1 ptr=%2").arg(obj ? obj->metaObject()->className() : "NULL").arg(long(ptr)));
#endif
return new MetaTypeVoidStar( metaid, obj, false /*owner*/ );
}
catch(Py::Exception& e) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug(QString("PythonMetaTypeFactory::create EXCEPTION %1").arg(Py::value(e).as_string().c_str()));
#endif
}
}
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonMetaTypeFactory::create Py::Object isNone. Create empty type '%1'").arg(metaid) );
#endif
void* ptr = 0; //QMetaType::construct(metaid, 0);
return new MetaTypeVoidStar( metaid, ptr, false /*owner*/ );
}
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonMetaTypeFactory::create Py::Object is typeName=%1 metaid=%2").arg(typeName).arg(metaid) );
#endif
}
// handle custom types within a QList by converting the list of pointers into a QList<void*>
QByteArray tn(typeName);
if( tn.startsWith("QList<") && tn.endsWith("*>") ) {
QByteArray itemTypeName = tn.mid(6, tn.length()-7);
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krosswarning( QString("PythonMetaTypeFactory::create Convert Py::Object '%1' to QList<void*> with typeName='%2' and itemTypeName='%3'").arg(object.as_string().c_str()).arg(typeName).arg(itemTypeName.constData()) );
#endif
QList<void*> list;
if( object.isTuple() ) {
Py::Tuple t(object);
for(uint i = 0; i < t.size(); ++i)
if( void *ptr = VoidList::extractVoidStar(t[i]) )
list << ptr;
}
else if( object.isList() ) {
Py::List l(object);
for(uint i = 0; i < l.length(); ++i)
if( void *ptr = VoidList::extractVoidStar(l[i]) )
list << ptr;
}
return new Kross::MetaTypeImpl< VoidList >(VoidList(list, itemTypeName));
}
// still no success. So, let's try to guess the content...
QVariant v = PythonType<QVariant>::toVariant(object);
if( v.canConvert<Kross::Object::Ptr>() ) {
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krossdebug( QString("PythonType<QVariant>::toPyObject Casting '%1' to Kross::Object::Ptr").arg(v.typeName()) );
#endif
if( Kross::Object::Ptr ptr = v.value< Kross::Object::Ptr >() )
return new MetaTypeVariant<Kross::Object::Ptr>(ptr);
}
#ifdef KROSS_PYTHON_VARIANT_DEBUG
krosswarning( QString("PythonMetaTypeFactory::create Convert Py::Object '%1' to QVariant v.toString='%2' v.typeName='%3' typeName='%4' typeId='%5'").arg(object.as_string().c_str()).arg(v.toString()).arg(v.typeName()).arg(typeName).arg(typeId) );
#endif
return new Kross::MetaTypeVariant< QVariant >( v );
} break;
}
}
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