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 ()
39 Plet_spanner::brew_molecule_p () const
41 Molecule* mol_p = new Molecule;
42 Real w = width ().length ();
44 Real dy_f = dy_f_drul_[RIGHT] - dy_f_drul_[LEFT];
47 Real nwc_f = (dir_ > 0 ? paper ()->note_width () : 0) * 0.8;
49 w += (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT]);
51 Atom a = paper ()->lookup_l ()->plet (dy_f, w, dir_);
53 a.translate (Offset ( (dx_f_drul_[LEFT] + nwc_f), dy_f_drul_[LEFT]));
56 Real interline_f = paper ()->interline_f ();
57 Real numy_f = (dir_ > 0 ? 0 : -interline_f / 2);
58 Real numx_f = interline_f / 1.5;
59 Atom num (tdef_p_->get_atom (paper (), CENTER));
60 num.translate (Offset (width ().length ()/ 2 + nwc_f - numx_f
62 dy_f_drul_[LEFT] + dy_f / width ().length () / 2
63 + dir_ * interline_f / 2 + numy_f));
70 Plet_spanner::do_add_processing ()
72 if (! (stem_l_drul_[LEFT] && stem_l_drul_[RIGHT]))
73 warning (_ ("Lonely plet.. "));
76 Drul_array<Stem *> new_stem_drul = stem_l_drul_;
79 new_stem_drul[d] = stem_l_drul_[(Direction)-d];
80 } while ( (d *= -1) != LEFT);
81 stem_l_drul_ = new_stem_drul;
85 Plet_spanner::do_post_processing ()
87 Real interline_f = paper ()->interline_f ();
88 assert (stem_l_drul_[LEFT] || stem_l_drul_[RIGHT]);
93 dy_f_drul_[d] = .5 * interline_f * (stem_l_drul_[d]
94 ? stem_l_drul_[d]->stem_end_f ()
95 : stem_l_drul_[(Direction)-d]->stem_end_f ());
96 dy_f_drul_[d] += dir_ * interline_f;
98 while ( (d *= -1) != LEFT);
102 Plet_spanner::do_substitute_dependency (Score_elem* o, Score_elem* n)
104 Stem* new_l = n ? (Stem*)n->item () : 0;
105 if (o->item () == stem_l_drul_[LEFT])
106 stem_l_drul_[LEFT] = new_l;
107 else if (o->item () == stem_l_drul_[RIGHT])
108 stem_l_drul_[RIGHT] = new_l;
112 Plet_spanner::set_default_dir ()
114 Real m = (stem_l_drul_[LEFT]->stem_end_f ()
115 + stem_l_drul_[RIGHT]->stem_end_f ()) / 2;
116 dir_ = (m < 0) ? DOWN : UP;
120 Plet_spanner::set_stem (Direction d, Stem* stem_l)
122 assert (!stem_l_drul_[d]);
123 stem_l_drul_[d] = stem_l;
124 set_bounds (d, stem_l);
126 add_dependency (stem_l);