src/snap.h

   1 #ifndef SEEN_SNAP_H
   2 #define SEEN_SNAP_H
   3
   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  */
  17
  18 #include <vector>
  19
  20 #include <libnr/nr-coord.h>
  21 #include <libnr/nr-dim2.h>
  22 #include <libnr/nr-forward.h>
  23 #include "snapper.h"
  24
  25 class SPNamedView;
  26
  27 class SnapManager
  28 {
  29 public:
  30     SnapManager(SPNamedView const *v) : namedview(v) {}
  31
  32     bool willSnapSomething() const;
  33
  34     Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
  35                                     NR::Point const &p,
  36                                     SPItem const *it) const;
  37
  38     Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
  39                                     NR::Point const &p,
  40                                     std::list<SPItem const *> const &it) const;
  41
  42     Inkscape::SnappedPoint constrainedSnap(Inkscape::Snapper::PointType t,
  43                                            NR::Point const &p,
  44                                            NR::Point const &c,
  45                                            SPItem const *it) const;
  46
  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;
  51
  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;
  56
  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;
  62
  63 private:
  64     SPNamedView const *namedview;
  65 };
  66
  67
  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);
  77
  78 /* List of points methods */
  79
  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                                                    );
  85
  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                                                    );
  91
  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);
  97
  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);
 101
 102
 103 #endif /* !SEEN_SNAP_H */
 104
 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 :