2 a2-engraver.cc -- implement A2_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2001 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "note-head.hh"
14 #include "translator-group.hh"
15 #include "side-position-interface.hh"
16 #include "directional-element-interface.hh"
17 #include "multi-measure-rest.hh"
19 class A2_engraver : public Engraver
23 VIRTUAL_COPY_CONS (Translator);
25 virtual void acknowledge_grob (Grob_info);
26 virtual void create_grobs ();
27 virtual void stop_translation_timestep ();
30 enum State { SOLO, SPLIT_INTERVAL, UNIRHYTHM, UNISILENCE, UNISON } state_;
33 ADD_THIS_TRANSLATOR (A2_engraver);
35 A2_engraver::A2_engraver ()
42 A2_engraver::create_grobs ()
44 if (!to_boolean (get_property ("combineParts")))
48 SCM unison = get_property ("unison");
49 SCM solo = get_property ("solo");
50 SCM solo_adue = get_property ("soloADue");
52 if (solo_adue == SCM_BOOL_T
53 && ((solo == SCM_BOOL_T && state_ != SOLO)
54 || (unison == SCM_BOOL_T && state_ != UNISON
55 && daddy_trans_l_->id_str_.left_str (3) == "one")))
57 text_p_ = new Item (get_property ("TextScript"));
58 Side_position_interface::set_axis (text_p_, Y_AXIS);
59 announce_grob (text_p_, 0);
63 if (solo == SCM_BOOL_T)
66 if (daddy_trans_l_->id_str_.left_str (3) == "one")
68 text = get_property ("soloText");
72 text = get_property ("soloIIText");
76 else if (unison == SCM_BOOL_T)
79 if (daddy_trans_l_->id_str_.left_str (3) == "one")
80 text = get_property ("aDueText");
83 Side_position_interface::set_direction (text_p_, dir);
84 text_p_->set_grob_property ("text", text);
90 A2_engraver::acknowledge_grob (Grob_info i)
92 if (!to_boolean (get_property ("combineParts")))
97 if (Note_head::has_interface (i.elem_l_))
100 Side_position_interface::add_support (t, i.elem_l_);
101 if (Side_position_interface::get_axis (t) == X_AXIS
102 && !t->parent_l (Y_AXIS))
103 t->set_parent (i.elem_l_, Y_AXIS);
105 if (Stem::has_interface (i.elem_l_))
107 Side_position_interface::add_support (text_p_, i.elem_l_);
111 SCM unisilence = get_property ("unisilence");
112 SCM unison = get_property ("unison");
113 SCM unirhythm = get_property ("unirhythm");
114 SCM solo = get_property ("solo");
115 SCM split_interval = get_property ("split-interval");
116 SCM solo_adue = get_property ("soloADue");
118 State previous_state = state_;
119 if (unisilence == SCM_BOOL_T)
124 else if (solo == SCM_BOOL_T)
126 else if (unison == SCM_BOOL_T)
128 else if (unirhythm == SCM_BOOL_T && split_interval == SCM_BOOL_T)
129 state_ = SPLIT_INTERVAL;
133 Direction d = CENTER;
134 if (daddy_trans_l_->id_str_.left_str (3) == "one")
136 else if (daddy_trans_l_->id_str_.left_str (3) == "two")
139 /* Must only set direction for VoiceCombines, not for StaffCombines:
140 we can't detect that here, so, ugh, yet another property */
141 if (!to_boolean (get_property ("noDirection"))
142 && (Stem::has_interface (i.elem_l_)
143 || Slur::has_interface (i.elem_l_)
144 // || Tie::has_interface (i.elem_l_)
145 || i.elem_l_->has_interface (ly_symbol2scm ("tie-interface"))
148 Usually, dynamics are removed by *_devnull_engravers for the
149 second voice. On the one hand, we don't want all dynamics for
150 the first voice to be placed above the staff. On the other
151 hand, colliding of scripts may be worse.
152 So, we don't set directions for these when we're playing solo.
154 || (i.elem_l_->has_interface (ly_symbol2scm ("dynamic-interface"))
156 || (i.elem_l_->has_interface (ly_symbol2scm ("text-interface"))
161 Hmm. We must set dir when solo, in order to get
162 the rests collided to the right position
164 if ((unirhythm != SCM_BOOL_T) || (solo == SCM_BOOL_T)
165 || ((unisilence == SCM_BOOL_T && previous_state != UNISON))
166 || (unirhythm == SCM_BOOL_T && split_interval == SCM_BOOL_T
167 && (unison != SCM_BOOL_T || solo_adue != SCM_BOOL_T)))
171 Blunt axe method: every grob gets a propertysetting.
173 i.elem_l_->set_grob_property ("direction", gh_int2scm (d));
178 todo: should we have separate state variable for being "rest while
180 if ( Multi_measure_rest::has_interface (i.elem_l_) && d )
181 if (state_ == UNIRHYTHM
182 && unisilence != SCM_BOOL_T)
184 i.elem_l_->set_grob_property ("staff-position", gh_int2scm (d * 6));
189 A2_engraver::stop_translation_timestep ()
193 Side_position_interface::add_staff_support (text_p_);
194 typeset_grob (text_p_);