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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef INKSCAPE_LPE_OFFSET_H
#define INKSCAPE_LPE_OFFSET_H
/** \file
* LPE <offset> implementation, see lpe-offset.cpp.
*/
/*
* Authors:
* Maximilian Albert
* Jabiertxo Arraiza
*
* Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
* Copyright (C) Maximilian Albert 2008 <maximilian.albert@gmail.com>
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "live_effects/effect.h"
#include "live_effects/lpegroupbbox.h"
#include "live_effects/parameter/enum.h"
#include "live_effects/parameter/parameter.h"
#include "live_effects/parameter/unit.h"
namespace Inkscape {
namespace LivePathEffect {
namespace OfS {
// we need a separate namespace to avoid clashes with other LPEs
class KnotHolderEntityOffsetPoint;
}
class LPEOffset : public Effect, GroupBBoxEffect {
public:
LPEOffset(LivePathEffectObject *lpeobject);
~LPEOffset() override;
void doBeforeEffect (SPLPEItem const* lpeitem) override;
Geom::PathVector doEffect_path (Geom::PathVector const & path_in) override;
void transform_multiply(Geom::Affine const &postmul, bool set) override;
void addKnotHolderEntities(KnotHolder * knotholder, SPItem * item) override;
void addCanvasIndicators(SPLPEItem const *lpeitem, std::vector<Geom::PathVector> &hp_vec) override;
void calculateOffset (Geom::PathVector const & path_in);
Geom::Point get_default_point(Geom::PathVector pathv) const;
Geom::Point get_nearest_point(Geom::PathVector pathv, Geom::Point point) const;
double sp_get_offset(Geom::Point origin);
friend class OfS::KnotHolderEntityOffsetPoint;
private:
UnitParam unit;
ScalarParam offset;
EnumParam<unsigned> linejoin_type;
ScalarParam miter_limit;
BoolParam attempt_force_join;
BoolParam update_on_knot_move;
Geom::Point offset_pt;
Glib::ustring prev_unit;
double scale = 1; //take document scale and additional parent transformations into account
KnotHolderEntity * _knot_entity;
Geom::PathVector filled_rule_pathv;
Geom::PathVector helper_path;
Inkscape::UI::Widget::Scalar *offset_widget;
LPEOffset(const LPEOffset&);
LPEOffset& operator=(const LPEOffset&);
};
} //namespace LivePathEffect
} //namespace Inkscape
#endif
/*
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 :
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