2 script-engraver.cc -- implement Script_engraver
4 (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 #include "side-position-interface.hh"
11 #include "rhythmic-head.hh"
12 #include "engraver.hh"
13 #include "note-column.hh"
25 description_ = SCM_EOL;
29 class Script_engraver : public Engraver
31 Array<Script_tuple> scripts_;
33 TRANSLATOR_DECLARATIONS(Script_engraver);
35 virtual bool try_music (Music*);
36 virtual void initialize ();
37 virtual void stop_translation_timestep ();
38 virtual void start_translation_timestep ();
39 virtual void process_music ();
40 virtual void acknowledge_grob (Grob_info);
44 Script_engraver::initialize ()
50 Script_engraver::try_music (Music *r)
52 if (r->is_mus_type ("articulation-event"))
63 Script_engraver::process_music ()
65 for (int i=0; i < scripts_.size (); i++)
67 Music* l=scripts_[i].event_;
69 SCM alist = get_property ("scriptDefinitions");
70 SCM art = scm_assoc (l->get_mus_property ("articulation-type"), alist);
72 if (art == SCM_BOOL_F)
74 String a = ly_scm2string (l->get_mus_property ("articulation-type"));
75 l->origin ()->warning (_f ("Don't know how to interpret articulation `%s'", a.to_str0 ()));
80 // todo -> use result of articulation-to-scriptdef directly as basic prop list.
81 Grob *p =new Item (get_property ("Script"));
82 scripts_[i].script_ = p;
85 scripts_[i].description_ = art;
87 p->set_grob_property ("script-molecule", ly_car (art));
91 SCM relative_stem_dir = ly_car (art);
94 SCM force_dir = l->get_mus_property ("direction");
95 if (ly_dir_p (force_dir) && !to_dir (force_dir))
96 force_dir = ly_car (art);
99 int priority = gh_scm2int (ly_car (art));
101 SCM s = p->get_grob_property ("script-priority");
103 priority = gh_scm2int (s);
106 Make sure they're in order of user input by adding index i.
107 Don't use the direction in this priority. Smaller means closer
112 if (ly_dir_p (force_dir) && to_dir (force_dir))
113 p->set_grob_property ("direction", force_dir);
114 else if (to_dir (relative_stem_dir))
115 p->set_grob_property ("side-relative-direction", relative_stem_dir);
118 Side_position_interface::set_axis (p, Y_AXIS);
119 p->set_grob_property ("script-priority", gh_int2scm (priority));
122 announce_grob (p, l->self_scm());
127 Script_engraver::acknowledge_grob (Grob_info inf)
129 if (Stem::has_interface (inf.grob_))
131 for (int i=0; i < scripts_.size (); i++)
133 Grob*e = scripts_[i].script_;
135 e->set_grob_property ("direction-source", inf.grob_->self_scm ());
136 e->add_dependency (inf.grob_);
137 Side_position_interface::add_support (e, inf.grob_);
140 else if (Rhythmic_head::has_interface (inf.grob_))
142 for (int i=0; i < scripts_.size (); i++)
144 Grob *e = scripts_[i].script_;
146 if (Side_position_interface::get_axis (e) == X_AXIS
147 && !e->get_parent (Y_AXIS))
149 e->set_parent (inf.grob_, Y_AXIS);
150 e->add_dependency (inf.grob_); // ??
152 Side_position_interface::add_support (e,inf.grob_);
155 else if (Note_column::has_interface (inf.grob_))
159 We make note column the parent of the script. That's not
160 correct, but due to seconds in a chord, noteheads may be
161 swapped around horizontally. We don't know which note head to
162 put it on, so we postpone this decision to
163 Script_interface::before_line_breaking ().
166 for (int i=0; i < scripts_.size (); i++)
168 Grob *e = scripts_[i].script_;
170 if (!e->get_parent (X_AXIS) &&
171 Side_position_interface::get_axis (e) == Y_AXIS)
173 e->set_parent (inf.grob_, X_AXIS);
180 Script_engraver::stop_translation_timestep ()
182 for (int i=0; i < scripts_.size (); i++)
184 if (!scripts_[i].script_)
187 Grob * sc = scripts_[i].script_;
188 if (to_boolean (gh_cadr (scripts_[i].description_)))
189 sc->add_offset_callback (Side_position_interface::quantised_position_proc, Y_AXIS);
191 Side_position_interface::add_staff_support (sc);
198 Script_engraver::start_translation_timestep ()
205 Script_engraver::Script_engraver(){}
207 ENTER_DESCRIPTION(Script_engraver,
208 /* descr */ "Handles note scripted articulations.",
209 /* creats*/ "Script",
210 /* accepts */ "script-event articulation-event",
211 /* acks */ "stem-interface rhythmic-head-interface note-column-interface",
212 /* reads */ "scriptDefinitions",