1 #ifndef SEEN_SNAP_H
2 #define SEEN_SNAP_H
4 /**
5 * \file snap.h
6 * \brief Various snapping methods.
7 *
8 * Authors:
9 * Lauris Kaplinski <lauris@kaplinski.com>
10 * Frank Felfe <innerspace@iname.com>
11 * Carl Hetherington <inkscape@carlh.net>
12 *
13 * Copyright (C) 2000-2002 Lauris Kaplinski
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 #include <vector>
20 #include <libnr/nr-coord.h>
21 #include <libnr/nr-dim2.h>
22 #include <libnr/nr-forward.h>
23 #include "snapper.h"
25 class SPNamedView;
27 class SnapManager
28 {
29 public:
30 SnapManager(SPNamedView const *v) : namedview(v) {}
32 bool willSnapSomething() const;
34 Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
35 NR::Point const &p,
36 SPItem const *it) const;
38 Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
39 NR::Point const &p,
40 std::list<SPItem const *> const &it) const;
42 Inkscape::SnappedPoint constrainedSnap(Inkscape::Snapper::PointType t,
43 NR::Point const &p,
44 NR::Point const &c,
45 SPItem const *it) const;
47 Inkscape::SnappedPoint constrainedSnap(Inkscape::Snapper::PointType t,
48 NR::Point const &p,
49 NR::Point const &c,
50 std::list<SPItem const *> const &it) const;
52 std::pair<NR::Point, bool> freeSnapTranslation(Inkscape::Snapper::PointType t,
53 std::vector<NR::Point> const &p,
54 std::list<SPItem const *> const &it,
55 NR::Point const &tr) const;
57 std::pair<NR::Point, bool> constrainedSnapTranslation(Inkscape::Snapper::PointType t,
58 std::vector<NR::Point> const &p,
59 NR::Point const &c,
60 std::list<SPItem const *> const &it,
61 NR::Point const &tr) const;
63 private:
64 SPNamedView const *namedview;
65 };
68 /* Single point methods */
69 NR::Coord namedview_vector_snap(SPNamedView const *nv, Inkscape::Snapper::PointType t, NR::Point &req,
70 NR::Point const &d, std::list<SPItem const *> const &it);
71 NR::Coord namedview_vector_snap(SPNamedView const *nv, Inkscape::Snapper::PointType t, NR::Point &req,
72 NR::Point const &d, SPItem const *it);
73 NR::Coord namedview_dim_snap(SPNamedView const *nv, Inkscape::Snapper::PointType t, NR::Point& req,
74 NR::Dim2 const dim, SPItem const *it);
75 NR::Coord namedview_dim_snap(SPNamedView const *nv, Inkscape::Snapper::PointType t, NR::Point& req,
76 NR::Dim2 const dim, std::list<SPItem const *> const &it);
78 /* List of points methods */
80 std::pair<double, bool> namedview_vector_snap_list(SPNamedView const *nv,
81 Inkscape::Snapper::PointType t, const std::vector<NR::Point> &p,
82 NR::Point const &norm, NR::scale const &s,
83 std::list<SPItem const *> const &it
84 );
86 std::pair<NR::Coord, bool> namedview_dim_snap_list(SPNamedView const *nv,
87 Inkscape::Snapper::PointType t, const std::vector<NR::Point> &p,
88 double const dx, NR::Dim2 const dim,
89 std::list<SPItem const *> const &it
90 );
92 std::pair<double, bool> namedview_dim_snap_list_scale(SPNamedView const *nv,
93 Inkscape::Snapper::PointType t, const std::vector<NR::Point> &p,
94 NR::Point const &norm, double const sx,
95 NR::Dim2 const dim,
96 std::list<SPItem const *> const &it);
98 NR::Coord namedview_dim_snap_list_skew(SPNamedView const *nv, Inkscape::Snapper::PointType t,
99 const std::vector<NR::Point> &p,
100 NR::Point const &norm, double const sx, NR::Dim2 const dim);
103 #endif /* !SEEN_SNAP_H */
105 /*
106 Local Variables:
107 mode:c++
108 c-file-style:"stroustrup"
109 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
110 indent-tabs-mode:nil
111 fill-column:99
112 End:
113 */
114 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :