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#ifndef SEEN_OBJECT_SNAPPER_H
#define SEEN_OBJECT_SNAPPER_H
/**
* \file object-snapper.h
* \brief Snapping things to objects.
*
* Authors:
* Carl Hetherington <inkscape@carlh.net>
*
* Copyright (C) 2005 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "snapper.h"
#include "sp-path.h"
#include "splivarot.h"
struct SPNamedView;
struct SPItem;
struct SPObject;
namespace Inkscape
{
class ObjectSnapper : public Snapper
{
public:
ObjectSnapper(SPNamedView const *nv, NR::Coord const d);
~ObjectSnapper();
enum DimensionToSnap {SNAP_X, SNAP_Y, SNAP_XY};
void setSnapToItemNode(bool s) {
_snap_to_itemnode = s;
}
bool getSnapToItemNode() const {
return _snap_to_itemnode;
}
void setSnapToItemPath(bool s) {
_snap_to_itempath = s;
}
bool getSnapToItemPath() const {
return _snap_to_itempath;
}
void setSnapToBBoxNode(bool s) {
_snap_to_bboxnode = s;
}
bool getSnapToBBoxNode() const {
return _snap_to_bboxnode;
}
void setSnapToBBoxPath(bool s) {
_snap_to_bboxpath = s;
}
bool getSnapToBBoxPath() const {
return _snap_to_bboxpath;
}
void setIncludeItemCenter(bool s) {
_include_item_center = s;
}
bool getIncludeItemCenter() const {
return _include_item_center;
}
void setStrictSnapping(bool enabled) {
_strict_snapping = enabled;
}
SnappedPoint guideSnap(NR::Point const &p,
DimensionToSnap const snap_dim) const;
bool ThisSnapperMightSnap() const;
private:
//store some lists of candidates, points and paths, so we don't have to rebuild them for each point we want to snap
std::vector<SPItem*> *_candidates;
std::vector<NR::Point> *_points_to_snap_to;
std::vector<Path*> *_paths_to_snap_to;
SnappedPoint _doFreeSnap(Inkscape::Snapper::PointType const &t,
NR::Point const &p,
bool const &first_point,
std::vector<NR::Point> &points_to_snap,
std::list<SPItem const *> const &it) const;
SnappedPoint _doConstrainedSnap(Inkscape::Snapper::PointType const &t,
NR::Point const &p,
bool const &first_point,
std::vector<NR::Point> &points_to_snap,
ConstraintLine const &c,
std::list<SPItem const *> const &it) const;
void _findCandidates(SPObject* r,
std::list<SPItem const *> const &it,
bool const &first_point,
std::vector<NR::Point> &points_to_snap,
DimensionToSnap const snap_dim) const;
void _snapNodes(Inkscape::Snapper::PointType const &t,
Inkscape::SnappedPoint &s,
NR::Point const &p,
bool const &first_point,
DimensionToSnap const snap_dim) const;
void _snapPaths(Inkscape::Snapper::PointType const &t,
Inkscape::SnappedPoint &s,
NR::Point const &p,
bool const &first_point) const;
bool _snap_to_itemnode;
bool _snap_to_itempath;
bool _snap_to_bboxnode;
bool _snap_to_bboxpath;
//If enabled, then bbox corners will only snap to bboxes,
//and nodes will only snap to nodes and paths. We will not
//snap bbox corners to nodes, or nodes to bboxes.
//(snapping to grids and guides is not affected by this)
bool _strict_snapping;
bool _include_item_center;
};
}
#endif
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