2 plet-spanner.cc -- implement Plet_spanner
4 source file of the GNU LilyPond music typesetter
6 (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
13 #include "molecule.hh"
15 #include "paper-def.hh"
16 #include "plet-spanner.hh"
18 #include "text-def.hh"
20 IMPLEMENT_IS_TYPE_B1 (Plet_spanner,Bow);
22 Plet_spanner::Plet_spanner ()
25 stem_l_drul_[RIGHT] =0;
26 stem_l_drul_[LEFT] =0;
28 tdef_p_ = new Text_def;
29 tdef_p_->align_i_ = CENTER;
30 tdef_p_->style_str_ = "italic";
33 Plet_spanner::Plet_spanner (Plet_spanner const& c)
36 tdef_p_ = new Text_def (*c.tdef_p_);
37 stem_l_drul_ = c.stem_l_drul_;
40 Plet_spanner::~Plet_spanner ()
46 Plet_spanner::brew_molecule_p () const
48 Molecule* mol_p = new Molecule;
49 Real w = width ().length ();
51 Real dy_f = dy_f_drul_[RIGHT] - dy_f_drul_[LEFT];
53 w += (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT]);
55 Atom a = paper ()->lookup_l ()->plet (dy_f, w, dir_);
57 a.translate (Offset (dx_f_drul_[LEFT], dy_f_drul_[LEFT]));
60 Real interline_f = paper ()->interline_f ();
61 Real numy_f = (dir_ > 0 ? 0 : -interline_f) + dir_ * interline_f / 2;
62 Atom num (tdef_p_->get_atom (paper (), CENTER));
63 num.translate (Offset (width ().length ()/ 2 + dx_f_drul_[LEFT],
64 dy_f_drul_[LEFT] + dy_f / 2 + numy_f));
71 Plet_spanner::do_add_processing ()
73 if (! (stem_l_drul_[LEFT] && stem_l_drul_[RIGHT]))
74 warning (_ ("Lonely plet.. "));
77 Drul_array<Stem *> new_stem_drul = stem_l_drul_;
80 new_stem_drul[d] = stem_l_drul_[(Direction)-d];
81 } while ( (d *= -1) != LEFT);
82 stem_l_drul_ = new_stem_drul;
86 Plet_spanner::do_post_processing ()
88 Real interline_f = paper ()->interline_f ();
89 Real nh_f = interline_f / 2;
90 assert (stem_l_drul_[LEFT] || stem_l_drul_[RIGHT]);
93 Real nw_f = paper ()->note_width () * 0.8;
98 Stem* s = stem_l_drul_[d] ? stem_l_drul_[d] : stem_l_drul_[(Direction)-d];
99 dy_f_drul_[d] = dir_ == s->get_dir () ? s->stem_end_f ()
100 : s->stem_begin_f () + dir_ * nh_f / 2;
101 dy_f_drul_[d] *= .5 * interline_f;
102 dy_f_drul_[d] += dir_ * interline_f;
104 dx_f_drul_[d] = nw_f;
106 while ( (d *= -1) != LEFT);
110 Plet_spanner::do_substitute_dependency (Score_elem* o, Score_elem* n)
112 Stem* new_l = n ? (Stem*)n->item () : 0;
113 if (o->item () == stem_l_drul_[LEFT])
114 stem_l_drul_[LEFT] = new_l;
115 else if (o->item () == stem_l_drul_[RIGHT])
116 stem_l_drul_[RIGHT] = new_l;
120 Plet_spanner::set_default_dir ()
122 Real m = (stem_l_drul_[LEFT]->stem_end_f ()
123 + stem_l_drul_[RIGHT]->stem_end_f ()) / 2;
124 dir_ = (m < 0) ? DOWN : UP;
128 Plet_spanner::set_stem (Direction d, Stem* stem_l)
130 assert (!stem_l_drul_[d]);
131 stem_l_drul_[d] = stem_l;
132 set_bounds (d, stem_l);
134 add_dependency (stem_l);