sp-conn-end-pair.h

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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_SP_CONN_END_PAIR
#define SEEN_SP_CONN_END_PAIR
 
/*
 * A class for handling connector endpoint movement and libavoid interaction.
 *
 * Authors:
 *   Peter Moulder <pmoulder@mail.csse.monash.edu.au>
 *
 *    * Copyright (C) 2004 Monash University
 *
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */
 
#include <cstddef>
#include <sigc++/sigc++.h>
#include <2geom/pathvector.h>
 
#include "3rdparty/adaptagrams/libavoid/connector.h"
#include "attributes.h"
 
class SPConnEnd;
class SPPath;
class SPItem;
class SPObject;
 
namespace Geom { class Point; }
namespace Inkscape {
namespace XML {
class Node;
}
}
 
class SPConnEndPair {
public:
    SPConnEndPair(SPPath *);
    ~SPConnEndPair();
    void release();
    void setAttr(const SPAttr key, char const *const value);
    void writeRepr(Inkscape::XML::Node *const repr) const;
    void getAttachedItems(SPItem *[2]) const;
    void getEndpoints(Geom::Point endPts[]) const;
    double getCurvature() const;
    SPConnEnd **getConnEnds();
    bool isOrthogonal() const;
    static Geom::PathVector createCurve(Avoid::ConnRef *connRef, double curvature);
    void tellLibavoidNewEndpoints(bool const processTransaction = false);
    bool reroutePathFromLibavoid();
    void makePathInvalid();
    void update();
    bool isAutoRoutingConn() const;
    void rerouteFromManipulation();
 
private:
    void _updateEndPoints();
 
    SPConnEnd *_connEnd[2];
 
    SPPath *_path;
 
    // libavoid's internal representation of the item.
    Avoid::ConnRef *_connRef;
 
    int _connType;
    double _connCurvature;
 
    // A sigc connection for transformed signal.
    sigc::connection _transformed_connection;
};
 
 
void sp_conn_end_pair_build(SPObject *object);
 
 
// _connType options:
enum {
    SP_CONNECTOR_NOAVOID,     // Basic connector - a straight line.
    SP_CONNECTOR_POLYLINE,    // Object avoiding polyline.
    SP_CONNECTOR_ORTHOGONAL   // Object avoiding orthogonal polyline (only horizontal and vertical segments).
};
 
#endif /* !SEEN_SP_CONN_END_PAIR */
 
/*
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*/
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