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// SPDX-License-Identifier: GPL-2.0-or-later
/**
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* Copyright (C) 2000 Lauris Kaplinski
* Copyright (C) 2000-2001 Ximian, Inc.
* Copyright (C) 2002 Lauris Kaplinski
* Copyright (C) 2008 Johan Engelen
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef SEEN_DISPLAY_CURVE_H
#define SEEN_DISPLAY_CURVE_H
#include <2geom/pathvector.h>
#include <cstddef>
#include <optional>
#include <list>
#include <memory>
#include <utility>
class SPCurve;
/**
* Wrapper around a Geom::PathVector object.
*/
class SPCurve {
//! Preferred smart pointer type for SPCurve
using smart_pointer = ::std::unique_ptr<SPCurve>;
public:
/* Constructors */
explicit SPCurve() = default;
explicit SPCurve(Geom::PathVector pathv)
: _pathv(std::move(pathv))
{}
// move
SPCurve(SPCurve &&other)
: _pathv(std::move(other._pathv))
{}
SPCurve &operator=(SPCurve &&other)
{
_pathv = std::move(other._pathv);
return *this;
}
static smart_pointer new_from_rect(Geom::Rect const &rect, bool all_four_sides = false);
static smart_pointer copy(SPCurve const *);
virtual ~SPCurve();
// Don't implement these:
SPCurve(const SPCurve&) = delete;
SPCurve& operator=(const SPCurve&) = delete;
void set_pathvector(Geom::PathVector const & new_pathv);
Geom::PathVector const & get_pathvector() const;
smart_pointer ref();
smart_pointer copy() const;
size_t get_segment_count() const;
size_t nodes_in_path() const;
bool is_empty() const;
bool is_unset() const;
bool is_closed() const;
bool is_equal(SPCurve const *other) const;
bool is_similar(SPCurve const *other, double precission = 0.001) const;
Geom::Curve const * last_segment() const;
Geom::Path const * last_path() const;
Geom::Curve const * first_segment() const;
Geom::Path const * first_path() const;
std::optional<Geom::Point> first_point() const;
std::optional<Geom::Point> last_point() const;
std::optional<Geom::Point> second_point() const;
std::optional<Geom::Point> penultimate_point() const;
void reset();
void moveto(Geom::Point const &p);
void moveto(double x, double y);
void lineto(Geom::Point const &p);
void lineto(double x, double y);
void quadto(Geom::Point const &p1, Geom::Point const &p2);
void quadto(double x1, double y1, double x2, double y2);
void curveto(Geom::Point const &p0, Geom::Point const &p1, Geom::Point const &p2);
void curveto(double x0, double y0, double x1, double y1, double x2, double y2);
void closepath();
void closepath_current();
void backspace();
void transform(Geom::Affine const &m);
void stretch_endpoints(Geom::Point const &, Geom::Point const &);
void move_endpoints(Geom::Point const &, Geom::Point const &);
void last_point_additive_move(Geom::Point const & p);
void append(Geom::PathVector const &, bool use_lineto = false);
void append(SPCurve const &curve2, bool use_lineto = false);
bool append_continuous(SPCurve const &c1, double tolerance = 0.0625);
smart_pointer create_reverse() const;
std::list<smart_pointer> split() const;
std::list<smart_pointer> split_non_overlapping() const;
friend class std::default_delete<SPCurve>;
friend class CurveTest; // for ref count test
private:
void _unref();
protected:
size_t _refcount = 1;
Geom::PathVector _pathv;
};
/**
* Specialized deleter allows using std::unique_ptr<SPCurve> with shared references.
*/
template <>
inline void ::std::default_delete<SPCurve>::operator()(SPCurve *ptr) const
// This is `noexcept` in libc++ but not in libstdc++
#ifdef _LIBCPP_VERSION
noexcept
#endif
{
ptr->_unref();
}
#endif // !SEEN_DISPLAY_CURVE_H
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8 :
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