/usr/include/QtGStreamer/QGlib/object.h is in libqtgstreamer-dev 1.2.0-3.
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Copyright (C) 2010 George Kiagiadakis <kiagiadakis.george@gmail.com>
Copyright (C) 2010 Collabora Ltd.
@author George Kiagiadakis <george.kiagiadakis@collabora.co.uk>
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 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef QGLIB_OBJECT_H
#define QGLIB_OBJECT_H
#include "global.h"
#include "refpointer.h"
#include "paramspec.h"
#include "value.h"
#include "type.h"
#include <QtCore/QList>
namespace QGlib {
/*! \headerfile QGlib/object.h <QGlib/Object>
* \brief Common virtual base class for Object and Interface
*
* This class is an implementation detail that serves only in code reuse between
* the Object and Interface classes. You should not use this class directly at all.
* Use Object or Interface instead.
*/
class QTGLIB_EXPORT ObjectBase : public RefCountedObject
{
public:
/*! Finds the property with the given \a name and returns a ParamSpec that describes it.
* If the property cannot be found, a null ParamSpecPtr will be returned.
*/
ParamSpecPtr findProperty(const char *name) const;
/*! Returns a list with all the properties that the class of this instance supports. */
QList<ParamSpecPtr> listProperties() const;
/*! Returns the value of the property with the given \a name as a Value object.
* If the property is not found, an invalid Value will be returned.
*/
Value property(const char *name) const;
/*! Sets the property with the given \a name to hold the given \a value.
* \a value is automatically converted to the type that this property
* expects using the Value::set() template method.
*/
template <class T> void setProperty(const char *name, const T & value);
/*! Sets the property with the given \a name to hold the given \a value.
* \a value \em must have exactly the same type that the property expects,
* otherwise this call will fail. Normally, you should use the template
* version of setProperty() instead of this function.
*/
void setProperty(const char *name, const Value & value);
void *data(const char *key) const;
void *stealData(const char *key) const;
void setData(const char *key, void *data, void (*destroyCallback)(void*) = NULL);
void *quarkData(const Quark & quark) const;
void *stealQuarkData(const Quark & quark) const;
void setQuarkData(const Quark & quark, void *data, void (*destroyCallback)(void*) = NULL);
protected:
ObjectBase() {}
virtual ~ObjectBase() {}
Q_DISABLE_COPY(ObjectBase);
virtual void ref(bool increaseRef);
virtual void unref();
};
/*! \headerfile QGlib/object.h <QGlib/Object>
* \brief Wrapper class for GObject
*
* The methods of this class can be found in ObjectBase.
*/
class QTGLIB_EXPORT Object : virtual public ObjectBase
{
QGLIB_WRAPPER(Object)
};
/*! \headerfile QGlib/object.h <QGlib/Object>
* \brief Base class for interface wrappers
*
* The methods of this class can be found in ObjectBase.
*/
class QTGLIB_EXPORT Interface : virtual public ObjectBase
{
QGLIB_WRAPPER_DIFFERENT_C_CLASS(Interface, Object)
};
template <class T>
void ObjectBase::setProperty(const char *name, const T & value)
{
ParamSpecPtr param = findProperty(name);
if (param) {
Value v;
v.init(param->valueType());
v.set<T>(value);
setProperty(name, v);
}
}
} //namespace QGlib
QGLIB_REGISTER_TYPE(QGlib::Object)
QGLIB_REGISTER_TYPE(QGlib::Interface)
QGLIB_REGISTER_WRAPIMPL_FOR_SUBCLASSES_OF(QGlib::Object, QGlib::Private::wrapObject)
#endif
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