sneedmc/logic/QObjectPtr.h

62 lines
981 B
C++

#pragma once
#include <memory>
/**
* A pointer class with the usual shared pointer semantics intended for derivates of QObject
* Calls deleteLater() instead of destroying the contained object immediately
*/
template <typename T>
class QObjectPtr
{
public:
QObjectPtr(){}
QObjectPtr(T * wrap)
{
reset(wrap);
}
QObjectPtr(const QObjectPtr<T>& other)
{
m_ptr = other.m_ptr;
}
template<typename Derived>
QObjectPtr(const QObjectPtr<Derived> &other)
{
m_ptr = other.unwrap();
}
public:
void reset(T * wrap)
{
using namespace std::placeholders;
m_ptr.reset(wrap, std::bind(&QObject::deleteLater, _1));
}
void reset()
{
m_ptr.reset();
}
T * get() const
{
return m_ptr.get();
}
T * operator->() const
{
return m_ptr.get();
}
T & operator*() const
{
return *m_ptr.get();
}
operator bool() const
{
return m_ptr.get() != nullptr;
}
const std::shared_ptr <T> unwrap() const
{
return m_ptr;
}
private:
std::shared_ptr <T> m_ptr;
};