2 text-engraver.cc -- implement Text_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
11 #include "engraver.hh"
12 #include "side-position-interface.hh"
14 #include "musical-request.hh"
16 #include "rhythmic-head.hh"
20 typeset directions that are plain text.
22 class Text_engraver : public Engraver
24 Link_array<Text_script_req> reqs_;
25 Link_array<Item> texts_;
27 VIRTUAL_COPY_CONS (Translator);
29 virtual bool try_music (Music* m);
30 virtual void stop_translation_timestep ();
31 virtual void start_translation_timestep ();
32 virtual void create_grobs ();
33 virtual void acknowledge_grob (Grob_info);
37 Text_engraver::try_music (Music *m)
39 if (dynamic_cast<Text_script_req*> (m)
40 && m->get_mus_property ("text-type") != ly_symbol2scm ("dynamic"))
42 reqs_.push (dynamic_cast<Text_script_req*> (m));
49 Text_engraver::acknowledge_grob (Grob_info inf)
51 if (Rhythmic_head::has_interface (inf.elem_l_))
53 for (int i=0; i < texts_.size (); i++)
56 Side_position_interface::add_support (t,inf.elem_l_);
61 if (Side_position_interface::get_axis (t) == X_AXIS
62 && !t->parent_l (Y_AXIS))
63 t->set_parent (inf.elem_l_, Y_AXIS);
64 else if (Side_position_interface::get_axis (t) == Y_AXIS
65 && !t->parent_l (X_AXIS))
66 t->set_parent (inf.elem_l_, X_AXIS);
70 if (Stem::has_interface (inf.elem_l_))
72 for (int i=0; i < texts_.size (); i++)
74 Side_position_interface::add_support (texts_[i],inf.elem_l_);
80 Text_engraver::create_grobs ()
84 for (int i=0; i < reqs_.size (); i++)
86 Text_script_req * r = reqs_[i];
88 // URG: Text vs TextScript
89 String basic = "TextScript";
91 if (r->get_mus_property ("text-type") == ly_symbol2scm ("finger"))
96 Item *text = new Item (get_property (basic.ch_C ()));
99 FIXME -> need to use basic props.
101 SCM axisprop = get_property ("scriptHorizontal");
103 Axis ax = to_boolean (axisprop) ? X_AXIS : Y_AXIS;
104 Side_position_interface::set_axis (text, ax);
107 if (r->style_str_ == "finger" && ax == Y_AXIS)
110 nicely center the scripts.
112 text->add_offset_callback (Side_position_interface::aligned_on_self_proc, X_AXIS);
113 text->add_offset_callback (Side_position_interface::centered_on_parent_proc, X_AXIS);
120 make sure they're in order by adding i to the priority field.
122 text->set_grob_property ("script-priority",
123 gh_int2scm (200 + i));
125 if (r->get_direction ())
126 Side_position_interface::set_direction (text, r->get_direction ());
128 text->set_grob_property ("text", r->get_mus_property ("text"));
130 SCM nonempty = get_property ("textNonEmpty");
131 if (to_boolean (nonempty))
133 empty text: signal that no rods should be applied.
135 text->set_grob_property ("no-spacing-rods" , SCM_BOOL_F);
137 announce_grob (text, r);
143 Text_engraver::stop_translation_timestep ()
145 for (int i=0; i < texts_.size (); i++)
147 Item *ti = texts_[i];
148 Side_position_interface::add_staff_support (ti);
155 Text_engraver::start_translation_timestep ()
160 ADD_THIS_TRANSLATOR (Text_engraver);