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#ifndef SEEN_OBJECT_SNAPPER_H
#define SEEN_OBJECT_SNAPPER_H
/*
* Authors:
* Carl Hetherington <inkscape@carlh.net>
* Diederik van Lierop <mail@diedenrezi.nl>
*
* Copyright (C) 2005 - 2011 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "snapper.h"
#include "sp-path.h"
#include "splivarot.h"
#include "snap-candidate.h"
struct SPNamedView;
struct SPItem;
struct SPObject;
namespace Inkscape
{
/**
* Snapping things to objects.
*/
class ObjectSnapper : public Snapper
{
public:
ObjectSnapper(SnapManager *sm, Geom::Coord const d);
~ObjectSnapper();
/**
* @return true if this Snapper will snap at least one kind of point.
*/
bool ThisSnapperMightSnap() const;
/**
* @return Snap tolerance (desktop coordinates); depends on current zoom so that it's always the same in screen pixels.
*/
Geom::Coord getSnapperTolerance() const; //returns the tolerance of the snapper in screen pixels (i.e. independent of zoom)
bool getSnapperAlwaysSnap() const; //if true, then the snapper will always snap, regardless of its tolerance
void freeSnap(IntermSnapResults &isr,
Inkscape::SnapCandidatePoint const &p,
Geom::OptRect const &bbox_to_snap,
std::vector<SPItem const *> const *it,
std::vector<SnapCandidatePoint> *unselected_nodes) const;
void constrainedSnap(IntermSnapResults &isr,
Inkscape::SnapCandidatePoint const &p,
Geom::OptRect const &bbox_to_snap,
SnapConstraint const &c,
std::vector<SPItem const *> const *it,
std::vector<SnapCandidatePoint> *unselected_nodes) 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<SnapCandidateItem> *_candidates;
std::vector<SnapCandidatePoint> *_points_to_snap_to;
std::vector<SnapCandidatePath > *_paths_to_snap_to;
/**
* Find all items within snapping range.
* @param parent Pointer to the document's root, or to a clipped path or mask object.
* @param it List of items to ignore.
* @param bbox_to_snap Bounding box hulling the whole bunch of points, all from the same selection and having the same transformation.
* @param clip_or_mask The parent object being passed is either a clip or mask.
*/
void _findCandidates(SPObject* parent,
std::vector<SPItem const *> const *it,
bool const &first_point,
Geom::Rect const &bbox_to_snap,
bool const _clip_or_mask,
Geom::Affine const additional_affine) const;
void _snapNodes(IntermSnapResults &isr,
Inkscape::SnapCandidatePoint const &p, // in desktop coordinates
std::vector<SnapCandidatePoint> *unselected_nodes,
SnapConstraint const &c = SnapConstraint(),
Geom::Point const &p_proj_on_constraint = Geom::Point()) const;
void _snapTranslatingGuide(IntermSnapResults &isr,
Geom::Point const &p,
Geom::Point const &guide_normal) const;
void _collectNodes(Inkscape::SnapSourceType const &t,
bool const &first_point) const;
void _snapPaths(IntermSnapResults &isr,
Inkscape::SnapCandidatePoint const &p, // in desktop coordinates
std::vector<Inkscape::SnapCandidatePoint> *unselected_nodes, // in desktop coordinates
SPPath const *selected_path) const;
void _snapPathsConstrained(IntermSnapResults &isr,
Inkscape::SnapCandidatePoint const &p, // in desktop coordinates
SnapConstraint const &c,
Geom::Point const &p_proj_on_constraint) const;
bool isUnselectedNode(Geom::Point const &point, std::vector<Inkscape::SnapCandidatePoint> const *unselected_nodes) const;
/**
* Returns index of first NR_END bpath in array.
*/
void _collectPaths(Geom::Point p,
Inkscape::SnapSourceType const source_type,
bool const &first_point) const;
void _clear_paths() const;
Geom::PathVector* _getBorderPathv() const;
Geom::PathVector* _getPathvFromRect(Geom::Rect const rect) const;
void _getBorderNodes(std::vector<SnapCandidatePoint> *points) const;
bool _allowSourceToSnapToTarget(SnapSourceType source, SnapTargetType target, bool strict_snapping) const;
}; // end of ObjectSnapper class
void getBBoxPoints(Geom::OptRect const bbox, std::vector<SnapCandidatePoint> *points, bool const isTarget, bool const includeCorners, bool const includeLineMidpoints, bool const includeObjectMidpoints);
} // end of namespace Inkscape
#endif
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