2 encompass-info.cc -- implement Encompass_info
4 source file of the GNU LilyPond music typesetter
6 (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
12 #include "note-column.hh"
13 #include "paper-def.hh"
14 #include "encompass-info.hh"
16 #include "staff-sym.hh"
17 #include "note-head.hh"
20 Encompass_info::Encompass_info ()
25 Encompass_info::Encompass_info (Note_column const* note, Direction dir)
29 Paper_def* paper = note->paper ();
30 Real interline = paper->interline_f ();
32 Real notewidth = paper->note_width () * 0.8;
33 Real internote = interline / 2;
35 Stem* stem_l = note->stem_l_;
37 set o_.x () to middle of notehead or on the exact position of stem,
38 according to slur direction
40 o_.x () = stem_l->hpos_f ();
51 if (stem_l->dir_ != dir)
52 o_.x () -= 0.5 * notewidth * stem_l->dir_;
54 o_.y () = stem_l->extent (Y_AXIS)[dir];
56 leave a gap: slur mustn't touch head/stem
58 o_.y () += 2.5 * internote * dir;
60 if (stem_l->dir_ != dir)
61 o_.y () += 1.0 * internote * dir;
63 Slur* slur_l = stem_l->slur_l_;
64 if (slur_l->encompass_arr_.size ()
65 && stem_l->staff_sym_l_ != slur_l->encompass_arr_[0]->stem_l_->staff_sym_l_)
67 if (stem_l->staff_sym_l_->dim_cache_[Y_AXIS].valid_b ())
69 interstaff_f_ = stem_l->staff_sym_l_->absolute_coordinate (Y_AXIS)
70 - slur_l->encompass_arr_[0]->stem_l_->staff_sym_l_->absolute_coordinate (Y_AXIS);
74 warning (_ ("invalid dimension cache: guessing staff position"));
75 if (slur_l->vertical_align_drul_[MIN] !=
76 slur_l->vertical_align_drul_[MAX])
77 warning (_ ("minVerticalAlign != maxVerticalAlign: interstaff slurs may be broken"));
78 interstaff_f_ = slur_l->vertical_align_drul_[MIN];
79 /* urg, guess staff order */
80 int d = note->head_l_arr_.top ()->steps_i_
81 - slur_l->encompass_arr_[0]->head_l_arr_[0]->steps_i_;
83 interstaff_f_ *= sign (d);
84 else if (stem_l->chord_start_f () >
85 slur_l->encompass_arr_[0]->stem_l_->chord_start_f ())
88 o_.y () += interstaff_f_;