CopiedSharedPtr.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2024 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
 
 
#ifndef TGUI_COPIED_SHARED_PTR_HPP
#define TGUI_COPIED_SHARED_PTR_HPP
 
 
#include <TGUI/Config.hpp>
 
 
#if !TGUI_EXPERIMENTAL_USE_STD_MODULE
 #include <memory>
#endif
 
 
TGUI_MODULE_EXPORT namespace tgui
{
 
 template <typename WidgetType>
 class CopiedSharedPtr
 {
 public:
 
 template <typename... Args>
 CopiedSharedPtr(Args&&... args) noexcept
 : m_WidgetPtr{std::make_shared<WidgetType>(std::forward<Args>(args)...)}
 {
 }
 
 CopiedSharedPtr(const CopiedSharedPtr& other) noexcept
 : m_WidgetPtr{std::make_shared<WidgetType>(*other.m_WidgetPtr)}
 {
 }
 
 CopiedSharedPtr(CopiedSharedPtr&& other) noexcept
 : m_WidgetPtr{std::move(other.m_WidgetPtr)}
 {
 }
 
 CopiedSharedPtr& operator=(const CopiedSharedPtr& other) noexcept
 {
 if (&other != this)
 m_WidgetPtr = std::make_shared<WidgetType>(*other.m_WidgetPtr);
 
 return *this;
 }
 
 CopiedSharedPtr& operator=(CopiedSharedPtr&& other) noexcept
 {
 if (&other != this)
 m_WidgetPtr = std::move(other.m_WidgetPtr);
 
 return *this;
 }
 
 operator bool() const noexcept
 {
 return (m_WidgetPtr != nullptr);
 }
 
 WidgetType& operator*() const noexcept
 {
 return *m_WidgetPtr;
 }
 
 WidgetType* operator->() const noexcept
 {
 return m_WidgetPtr.get();
 }
 
 TGUI_NODISCARD WidgetType* get() const noexcept
 {
 return m_WidgetPtr.get();
 }
 
 private:
 
 std::shared_ptr<WidgetType> m_WidgetPtr;
 };
 
 
}
 
 
#endif // TGUI_COPIED_SHARED_PTR_HPP