d1a2c94ce30277772600d96544c359697c02f29b
1 #ifndef SEEN_OBJECT_SNAPPER_H
2 #define SEEN_OBJECT_SNAPPER_H
4 /**
5 * \file object-snapper.h
6 * \brief Snapping things to objects.
7 *
8 * Authors:
9 * Carl Hetherington <inkscape@carlh.net>
10 *
11 * Copyright (C) 2005 Authors
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 #include "snapper.h"
17 #include "sp-path.h"
18 #include "splivarot.h"
20 struct SPNamedView;
21 struct SPItem;
22 struct SPObject;
24 namespace Inkscape
25 {
27 class ObjectSnapper : public Snapper
28 {
30 public:
31 ObjectSnapper(SPNamedView const *nv, NR::Coord const d);
32 ~ObjectSnapper();
34 enum DimensionToSnap {SNAP_X, SNAP_Y, SNAP_XY};
36 void setSnapToItemNode(bool s) {
37 _snap_to_itemnode = s;
38 }
40 bool getSnapToItemNode() const {
41 return _snap_to_itemnode;
42 }
44 void setSnapToItemPath(bool s) {
45 _snap_to_itempath = s;
46 }
48 bool getSnapToItemPath() const {
49 return _snap_to_itempath;
50 }
52 void setSnapToBBoxNode(bool s) {
53 _snap_to_bboxnode = s;
54 }
56 bool getSnapToBBoxNode() const {
57 return _snap_to_bboxnode;
58 }
60 void setSnapToBBoxPath(bool s) {
61 _snap_to_bboxpath = s;
62 }
64 bool getSnapToBBoxPath() const {
65 return _snap_to_bboxpath;
66 }
68 void setIncludeItemCenter(bool s) {
69 _include_item_center = s;
70 }
72 bool getIncludeItemCenter() const {
73 return _include_item_center;
74 }
76 void setStrictSnapping(bool enabled) {
77 _strict_snapping = enabled;
78 }
80 SnappedPoint guideSnap(NR::Point const &p,
81 DimensionToSnap const snap_dim) const;
83 bool ThisSnapperMightSnap() const;
85 private:
86 //store some lists of candidates, points and paths, so we don't have to rebuild them for each point we want to snap
87 std::vector<SPItem*> *_candidates;
88 std::vector<NR::Point> *_points_to_snap_to;
89 std::vector<Path*> *_paths_to_snap_to;
90 void _doFreeSnap(SnappedConstraints &sc,
91 Inkscape::Snapper::PointType const &t,
92 NR::Point const &p,
93 bool const &first_point,
94 std::vector<NR::Point> &points_to_snap,
95 std::list<SPItem const *> const &it) const;
97 void _doConstrainedSnap(SnappedConstraints &sc,
98 Inkscape::Snapper::PointType const &t,
99 NR::Point const &p,
100 bool const &first_point,
101 std::vector<NR::Point> &points_to_snap,
102 ConstraintLine const &c,
103 std::list<SPItem const *> const &it) const;
105 void _findCandidates(SPObject* r,
106 std::list<SPItem const *> const &it,
107 bool const &first_point,
108 std::vector<NR::Point> &points_to_snap,
109 DimensionToSnap const snap_dim) const;
111 bool _snapNodes(Inkscape::Snapper::PointType const &t,
112 Inkscape::SnappedPoint &s,
113 NR::Point const &p,
114 bool const &first_point,
115 DimensionToSnap const snap_dim) const;
117 bool _snapPaths(Inkscape::Snapper::PointType const &t,
118 Inkscape::SnappedPoint &s,
119 NR::Point const &p,
120 bool const &first_point) const;
122 bool _snap_to_itemnode;
123 bool _snap_to_itempath;
124 bool _snap_to_bboxnode;
125 bool _snap_to_bboxpath;
127 //If enabled, then bbox corners will only snap to bboxes,
128 //and nodes will only snap to nodes and paths. We will not
129 //snap bbox corners to nodes, or nodes to bboxes.
130 //(snapping to grids and guides is not affected by this)
131 bool _strict_snapping;
132 bool _include_item_center;
133 };
135 }
137 #endif