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>
9 #include "dimension-cache.hh"
11 #include "engraver.hh"
12 #include "staff-side.hh"
13 #include "text-item.hh"
14 #include "musical-request.hh"
15 #include "note-head.hh"
17 #include "staff-symbol.hh"
19 class Text_engraver : public Engraver
21 Link_array<Text_script_req> reqs_;
22 Link_array<Staff_side_item> positionings_;
23 Link_array<Text_item> texts_;
26 VIRTUAL_COPY_CONS(Translator);
28 virtual bool do_try_music (Music* m);
29 virtual void do_pre_move_processing ();
30 virtual void do_post_move_processing ();
31 virtual void do_process_requests ();
32 virtual void acknowledge_element (Score_element_info);
35 Text_engraver::Text_engraver ()
41 Text_engraver::do_try_music (Music *m)
43 if (Text_script_req *r = dynamic_cast<Text_script_req*> (m))
53 Text_engraver::acknowledge_element (Score_element_info i)
55 if (Note_head *n = dynamic_cast<Note_head*> (i.elem_l_))
57 for (int i=0; i < positionings_.size (); i++)
59 positionings_[i]->add_support (n);
62 if (Stem *n = dynamic_cast<Stem*> (i.elem_l_))
64 for (int i=0; i < positionings_.size (); i++)
66 positionings_[i]->add_support (n);
72 Text_engraver::do_process_requests ()
74 for (int i=0; i < reqs_.size (); i++)
76 Text_script_req * r = reqs_[i];
78 Text_item *text = new Text_item;
79 Staff_side_item *ss = new Staff_side_item;
81 ss->set_victim (text);
82 ss->set_elt_property (script_priority_scm_sym,
87 text->text_str_ = r->text_str_;
89 if (r->style_str_.empty_b ())
91 Scalar p (get_property ("textStyle", 0));
96 text->style_str_ = r->style_str_;
98 Scalar padding = get_property ("textScriptPadding", 0);
99 if (padding.length_i() && padding.isnum_b ())
101 ss->set_elt_property (padding_scm_sym, gh_double2scm(Real(padding)));
104 Scalar empty = get_property ("textEmptyDimension", 0);
105 if (empty.to_bool ())
107 text->dim_cache_[X_AXIS]->set_empty (true);
110 announce_element (Score_element_info (text, r));
111 announce_element (Score_element_info (ss, r));
114 positionings_.push (ss);
119 Text_engraver::do_pre_move_processing ()
121 for (int i=0; i < texts_.size (); i++)
123 typeset_element (texts_[i]);
124 typeset_element (positionings_[i]);
127 positionings_.clear ();
131 Text_engraver::do_post_move_processing ()
136 ADD_THIS_TRANSLATOR(Text_engraver);