2 script-engraver.cc -- implement Script_engraver
4 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "side-position-interface.hh"
10 #include "musical-request.hh"
12 #include "rhythmic-head.hh"
13 #include "engraver.hh"
15 class Script_engraver : public Engraver {
16 Link_array<Grob> script_p_arr_;
17 Link_array<Articulation_req> script_req_l_arr_;
20 VIRTUAL_COPY_CONS (Translator);
23 virtual bool try_music (Music*);
24 virtual void initialize ();
25 virtual void stop_translation_timestep ();
26 virtual void start_translation_timestep ();
27 virtual void create_grobs ();
28 virtual void acknowledge_grob (Grob_info);
33 Script_engraver::initialize ()
35 script_req_l_arr_.clear();
39 Script_engraver::try_music (Music *r_l)
41 if (Articulation_req *mr = dynamic_cast <Articulation_req *> (r_l))
43 for (int i=0; i < script_req_l_arr_.size(); i++)
45 if (script_req_l_arr_[i]->equal_b (mr))
48 script_req_l_arr_.push (mr);
55 Script_engraver::create_grobs ()
57 for (int i=0; i < script_req_l_arr_.size(); i++)
59 Articulation_req* l=script_req_l_arr_[i];
61 SCM alist = get_property ("scriptDefinitions");
62 SCM art = scm_assoc (l->get_mus_property ("articulation-type"), alist);
64 if (art == SCM_BOOL_F)
66 String a = ly_scm2string (l->get_mus_property ("articulation-type"));
67 l->origin ()->warning (_f ("Don't know how to interpret articulation `%s'", a.ch_C()));
71 // todo -> use result of articulation-to-scriptdef directly as basic prop list.
72 Grob *p =new Item (get_property ("Script"));
74 p->set_grob_property ("molecule",
78 bool follow_staff = gh_scm2bool (gh_car (art));
80 SCM relative_stem_dir = gh_car (art);
83 SCM force_dir = l->get_mus_property ("direction");
84 if (isdir_b (force_dir) && !to_dir (force_dir))
85 force_dir = gh_car (art);
88 SCM priority = gh_car (art);
91 if (isdir_b (force_dir) && to_dir (force_dir))
92 p->set_grob_property ("direction", force_dir);
93 else if (to_dir (relative_stem_dir))
94 p->set_grob_property ("side-relative-direction", relative_stem_dir);
99 FIXME: should figure this out in relation with basic props!
101 SCM axisprop = get_property ("scriptHorizontal");
102 bool xaxis = to_boolean (axisprop);
103 Side_position::set_axis (p, xaxis ? X_AXIS : Y_AXIS);
105 if (!follow_staff && ! xaxis)
106 p->set_grob_property ("staff-support", SCM_BOOL_T);
108 if (!xaxis && follow_staff)
109 p->add_offset_callback (Side_position::quantised_position_proc, Y_AXIS);
112 p->set_grob_property ("script-priority", priority);
114 script_p_arr_.push (p);
116 announce_grob (p, l);
118 script_req_l_arr_.clear ();
122 Script_engraver::acknowledge_grob (Grob_info inf)
124 bool them_grace = to_boolean (inf.elem_l_->get_grob_property ("grace"));
125 bool us_grace = to_boolean (get_property ("weAreGraceContext"));
127 if (us_grace != them_grace)
130 if (Stem::has_interface (inf.elem_l_))
132 for (int i=0; i < script_p_arr_.size(); i++)
134 Grob*e = script_p_arr_[i];
136 e->set_grob_property ("direction-source", inf.elem_l_->self_scm ());
137 Side_position::add_support (e, inf.elem_l_);
140 else if (Rhythmic_head::has_interface (inf.elem_l_))
142 for (int i=0; i < script_p_arr_.size(); i++)
144 Grob *e = script_p_arr_[i];
146 if (!e->parent_l (X_AXIS))
148 e->set_parent (inf.elem_l_, X_AXIS);
150 if (Side_position::get_axis (e) == X_AXIS
151 && !e->parent_l (Y_AXIS))
152 e->set_parent (inf.elem_l_, Y_AXIS);
154 Side_position::add_support (e,inf.elem_l_);
160 Script_engraver::stop_translation_timestep()
162 for (int i=0; i < script_p_arr_.size(); i++)
164 Grob * sc = script_p_arr_[i];
165 if (to_boolean (sc->get_grob_property ("staff-support")))
167 Side_position::add_staff_support (sc);
171 script_p_arr_.clear();
175 Script_engraver::start_translation_timestep()
177 script_req_l_arr_.clear();
180 ADD_THIS_TRANSLATOR (Script_engraver);