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#ifndef SEEN_SNAP_CANDIDATE_H
#define SEEN_SNAP_CANDIDATE_H
/**
* \file snap-candidate.h
* \brief some utility classes to store various kinds of snap candidates.
*
* Authors:
* Diederik van Lierop <mail@diedenrezi.nl>
*
* Copyright (C) 2010 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
//#include "snapped-point.h"
struct SPItem; // forward declaration
namespace Inkscape {
enum SnapTargetType {
SNAPTARGET_UNDEFINED = 0,
SNAPTARGET_GRID,
SNAPTARGET_GRID_INTERSECTION,
SNAPTARGET_GUIDE,
SNAPTARGET_GUIDE_INTERSECTION,
SNAPTARGET_GUIDE_ORIGIN,
SNAPTARGET_GRID_GUIDE_INTERSECTION,
SNAPTARGET_NODE_SMOOTH,
SNAPTARGET_NODE_CUSP,
SNAPTARGET_LINE_MIDPOINT,
SNAPTARGET_OBJECT_MIDPOINT,
SNAPTARGET_ROTATION_CENTER,
SNAPTARGET_HANDLE,
SNAPTARGET_PATH,
SNAPTARGET_PATH_INTERSECTION,
SNAPTARGET_BBOX_CORNER,
SNAPTARGET_BBOX_EDGE,
SNAPTARGET_BBOX_EDGE_MIDPOINT,
SNAPTARGET_BBOX_MIDPOINT,
SNAPTARGET_PAGE_BORDER,
SNAPTARGET_PAGE_CORNER,
SNAPTARGET_CONVEX_HULL_CORNER,
SNAPTARGET_ELLIPSE_QUADRANT_POINT,
SNAPTARGET_CENTER, // of ellipse
SNAPTARGET_CORNER, // of image or of rectangle
SNAPTARGET_TEXT_BASELINE,
SNAPTARGET_CONSTRAINED_ANGLE
};
enum SnapSourceType {
SNAPSOURCE_UNDEFINED = 0,
SNAPSOURCE_BBOX_CORNER,
SNAPSOURCE_BBOX_MIDPOINT,
SNAPSOURCE_BBOX_EDGE_MIDPOINT,
SNAPSOURCE_NODE_SMOOTH,
SNAPSOURCE_NODE_CUSP,
SNAPSOURCE_LINE_MIDPOINT,
SNAPSOURCE_OBJECT_MIDPOINT,
SNAPSOURCE_ROTATION_CENTER,
SNAPSOURCE_HANDLE,
SNAPSOURCE_PATH_INTERSECTION,
SNAPSOURCE_GUIDE,
SNAPSOURCE_GUIDE_ORIGIN,
SNAPSOURCE_CONVEX_HULL_CORNER,
SNAPSOURCE_ELLIPSE_QUADRANT_POINT,
SNAPSOURCE_CENTER, // of ellipse
SNAPSOURCE_CORNER, // of image or of rectangle
SNAPSOURCE_TEXT_BASELINE
};
/// Class to store data for points which are snap candidates, either as a source or as a target
class SnapCandidatePoint
{
public:
SnapCandidatePoint(Geom::Point const &point, Inkscape::SnapSourceType const source, long const source_num, Inkscape::SnapTargetType const target, Geom::Rect const &bbox)
: _point(point), _source_type(source), _target_type(target), _source_num(source_num), _target_bbox(bbox) {};
SnapCandidatePoint(Geom::Point const &point, Inkscape::SnapSourceType const source, Inkscape::SnapTargetType const target)
: _point(point), _source_type(source), _target_type(target)
{
_source_num = 0;
_target_bbox = Geom::Rect();
}
SnapCandidatePoint(Geom::Point const &point, Inkscape::SnapSourceType const source, long const source_num = 0)
: _point(point), _source_type(source), _target_type(Inkscape::SNAPTARGET_UNDEFINED), _source_num(source_num) {_target_bbox = Geom::Rect();}
inline Geom::Point const & getPoint() const {return _point;}
inline Inkscape::SnapSourceType getSourceType() const {return _source_type;}
inline Inkscape::SnapTargetType getTargetType() const {return _target_type;}
inline long getSourceNum() const {return _source_num;}
inline Geom::Rect const & getTargetBBox() const {return _target_bbox;}
private:
// Coordinates of the point
Geom::Point _point;
// If this SnapCandidatePoint is a snap source, then _source_type must be defined. If it
// is a snap target, then _target_type must be defined. If it's yet unknown whether it will
// be a source or target, then both may be defined
Inkscape::SnapSourceType _source_type;
Inkscape::SnapTargetType _target_type;
//Sequence number of the source point within the set of points that is to be snapped. Starting at zero
long _source_num;
// If this is a target and it belongs to a bounding box, e.g. when the target type is
// SNAPTARGET_BBOX_EDGE_MIDPOINT, then _target_bbox stores the relevant bounding box
Geom::Rect _target_bbox;
};
class SnapCandidateItem
{
public:
SnapCandidateItem(SPItem* item, bool clip_or_mask, Geom::Matrix additional_affine)
: item(item), clip_or_mask(clip_or_mask), additional_affine(additional_affine) {}
~SnapCandidateItem() {};
SPItem* item; // An item that is to be considered for snapping to
bool clip_or_mask; // If true, then item refers to a clipping path or a mask
/* To find out the absolute position of a clipping path or mask, we not only need to know
* the transformation of the clipping path or mask itself, but also the transformation of
* the object to which the clip or mask is being applied; that transformation is stored here
*/
Geom::Matrix additional_affine;
}
;
class SnapCandidatePath
{
public:
SnapCandidatePath(Geom::PathVector* path, SnapTargetType target, bool edited = false)
: path_vector(path), target_type(target), currently_being_edited(edited) {}
~SnapCandidatePath() {};
Geom::PathVector* path_vector;
SnapTargetType target_type;
bool currently_being_edited; // true for the path that's currently being edited in the node tool (if any)
};
} // end of namespace Inkscape
#endif /* !SEEN_SNAP_CANDIDATE_H */
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