2 text-engraver.cc -- implement Text_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "engraver.hh"
11 #include "g-staff-side.hh"
12 #include "g-text-item.hh"
13 #include "musical-request.hh"
14 #include "note-head.hh"
16 #include "staff-symbol.hh"
18 class Text_engraver : public Engraver
20 Link_array<Text_script_req> reqs_;
21 Link_array<G_staff_side_item> positionings_;
22 Link_array<G_text_item> texts_;
25 VIRTUAL_COPY_CONS(Translator);
27 virtual bool do_try_music (Music* m);
28 virtual void do_pre_move_processing ();
29 virtual void do_post_move_processing ();
30 virtual void do_process_requests ();
31 virtual void acknowledge_element (Score_element_info);
34 Text_engraver::Text_engraver ()
40 Text_engraver::do_try_music (Music *m)
42 if (Text_script_req *r = dynamic_cast<Text_script_req*> (m))
52 Text_engraver::acknowledge_element (Score_element_info i)
54 if (Note_head *n = dynamic_cast<Note_head*> (i.elem_l_))
56 for (int i=0; i < positionings_.size (); i++)
58 positionings_[i]->add_support (n);
61 if (Stem *n = dynamic_cast<Stem*> (i.elem_l_))
63 for (int i=0; i < positionings_.size (); i++)
65 positionings_[i]->add_support (n);
71 Text_engraver::do_process_requests ()
73 for (int i=0; i < reqs_.size (); i++)
75 Text_script_req * r = reqs_[i];
77 G_text_item *text = new G_text_item;
78 G_staff_side_item *ss = new G_staff_side_item;
80 ss->set_victim (text);
83 text->text_str_ = r->text_str_;
85 if (r->style_str_.empty_b ())
87 Scalar p (get_property ("textStyle", 0));
92 text->style_str_ = r->style_str_;
94 Scalar padding = get_property ("textScriptPadding", 0);
95 if (padding.length_i() && padding.isnum_b ())
97 ss->set_elt_property (padding_scm_sym, gh_double2scm(Real(padding)));
100 Scalar empty = get_property ("textEmptyDimension", 0);
101 if (empty.to_bool ())
103 text->dim_cache_[X_AXIS].set_empty (true);
106 announce_element (Score_element_info (text, r));
107 announce_element (Score_element_info (ss, r));
110 positionings_.push (ss);
115 Text_engraver::do_pre_move_processing ()
117 for (int i=0; i < texts_.size (); i++)
119 typeset_element (texts_[i]);
120 typeset_element (positionings_[i]);
123 positionings_.clear ();
127 Text_engraver::do_post_move_processing ()
132 ADD_THIS_TRANSLATOR(Text_engraver);