drawing-item-ptr.h

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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef INKSCAPE_DISPLAY_DRAWINGITEM_PTR_H
#define INKSCAPE_DISPLAY_DRAWINGITEM_PTR_H
 
#include <memory>
#include <type_traits>
 
namespace Inkscape { class DrawingItem; }
 
struct UnlinkDeleter
{
    template <typename T>
    void operator()(T *t)
    {
        static_assert(std::is_base_of_v<Inkscape::DrawingItem, T>);
        t->unlink();
    }
};
 
template <typename T>
using DrawingItemPtr = std::unique_ptr<T, UnlinkDeleter>;
 
template <typename T, typename... Args>
auto make_drawingitem(Args&&... args)
{
    return DrawingItemPtr<T>(new T(std::forward<Args>(args)...));
};
 
#endif // INKSCAPE_DISPLAY_DRAWINGITEM_PTR_H