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 "grid-snapper.h"
  24 #include "guide-snapper.h"
  25 #include "object-snapper.h"
  26
  27 class SPNamedView;
  28
  29 class SnapManager
  30 {
  31 public:
  32     SnapManager(SPNamedView* v);
  33
  34     bool willSnapSomething() const;
  35
  36     Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
  37                                     NR::Point const &p,
  38                                     SPItem const *it) const;
  39
  40     Inkscape::SnappedPoint freeSnap(Inkscape::Snapper::PointType t,
  41                                     NR::Point const &p,
  42                                     std::list<SPItem const *> const &it) const;
  43
  44     Inkscape::SnappedPoint constrainedSnap(Inkscape::Snapper::PointType t,
  45                                            NR::Point const &p,
  46                                            NR::Point const &c,
  47                                            SPItem const *it) const;
  48
  49     Inkscape::SnappedPoint constrainedSnap(Inkscape::Snapper::PointType t,
  50                                            NR::Point const &p,
  51                                            NR::Point const &c,
  52                                            std::list<SPItem const *> const &it) const;
  53
  54     std::pair<NR::Point, bool> freeSnapTranslation(Inkscape::Snapper::PointType t,
  55                                                    std::vector<NR::Point> const &p,
  56                                                    std::list<SPItem const *> const &it,
  57                                                    NR::Point const &tr) const;
  58
  59     std::pair<NR::Point, bool> constrainedSnapTranslation(Inkscape::Snapper::PointType t,
  60                                                           std::vector<NR::Point> const &p,
  61                                                           NR::Point const &c,
  62                                                           std::list<SPItem const *> const &it,
  63                                                           NR::Point const &tr) const;
  64
  65     Inkscape::GridSnapper grid;
  66     Inkscape::GuideSnapper guide;
  67     Inkscape::ObjectSnapper object;
  68
  69     typedef std::list<const Inkscape::Snapper*> SnapperList;
  70     SnapperList getSnappers() const;
  71 };
  72
  73
  74 /* Single point methods */
  75 NR::Coord namedview_vector_snap(SPNamedView const *nv, Inkscape::Snapper::PointType t, NR::Point &req,
  76                                 NR::Point const &d, std::list<SPItem const *> const &it);
  77 NR::Coord namedview_vector_snap(SPNamedView const *nv, Inkscape::Snapper::PointType t, NR::Point &req,
  78                                 NR::Point const &d, SPItem const *it);
  79 NR::Coord namedview_dim_snap(SPNamedView const *nv, Inkscape::Snapper::PointType t, NR::Point& req,
  80                              NR::Dim2 const dim, SPItem const *it);
  81 NR::Coord namedview_dim_snap(SPNamedView const *nv, Inkscape::Snapper::PointType t, NR::Point& req,
  82                              NR::Dim2 const dim, std::list<SPItem const *> const &it);
  83
  84 /* List of points methods */
  85
  86 std::pair<double, bool> namedview_vector_snap_list(SPNamedView const *nv,
  87                                                    Inkscape::Snapper::PointType t, const std::vector<NR::Point> &p,
  88                                                    NR::Point const &norm, NR::scale const &s,
  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 :