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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_CANVAS_ITEM_PTR_H
#define SEEN_CANVAS_ITEM_PTR_H
/*
* An entirely analogous file to display/drawing-item-ptr.h.
*/
#include <memory>
#include <type_traits>
namespace Inkscape { class CanvasItem; }
/// Deleter object which calls the unlink() method of CanvasItem.
struct CanvasItemUnlinkDeleter
{
template <typename T>
void operator()(T *t)
{
static_assert(std::is_base_of_v<Inkscape::CanvasItem, T>);
t->unlink();
}
};
/// Smart pointer used to hold CanvasItems, like std::unique_ptr.
template <typename T>
using CanvasItemPtr = std::unique_ptr<T, CanvasItemUnlinkDeleter>;
/// Convienence function to create a CanvasItemPtr, like std::make_unique.
template <typename T, typename... Args>
auto make_canvasitem(Args&&... args)
{
return CanvasItemPtr<T>(new T(std::forward<Args>(args)...));
};
#endif // SEEN_CANVAS_ITEM_PTR_H
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