2 system-start-delimiter-engraver.cc -- implement System_start_delimiter_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
11 #include "system-start-delimiter.hh"
12 #include "engraver.hh"
13 #include "staff-symbol.hh"
14 #include "group-interface.hh"
15 #include "paper-column.hh"
16 #include "paper-def.hh"
19 class System_start_delimiter_engraver : public Engraver
22 VIRTUAL_COPY_CONS(Translator);
23 System_start_delimiter_engraver();
27 virtual void acknowledge_element (Score_element_info);
28 virtual void do_creation_processing ();
29 virtual void do_removal_processing ();
32 ADD_THIS_TRANSLATOR(System_start_delimiter_engraver);
35 System_start_delimiter_engraver::acknowledge_element (Score_element_info inf)
37 if (Staff_symbol::has_interface (inf.elem_l_))
40 don't add as Axis_group_interface::add_element (delim_, ),
41 because that would set the parent as well */
43 Pointer_group_interface (delim_).add_element (inf.elem_l_);
45 else if (System_start_delimiter::has_interface (inf.elem_l_))
47 SCM gl = inf.elem_l_->get_elt_property ("glyph");
48 SCM my_gl = delim_->get_elt_property ("glyph");
53 if (gh_symbol_p (gl) && gl == ly_symbol2scm ("brace")
54 && gh_symbol_p (my_gl) && my_gl == ly_symbol2scm ("bracket"))
55 inf.elem_l_->translate_axis ( -paper_l ()->get_var ("interline"), X_AXIS); // ugh
60 System_start_delimiter_engraver::System_start_delimiter_engraver()
66 System_start_delimiter_engraver::do_creation_processing()
68 delim_ = new Spanner (get_property ("basicSystemStartDelimiterProperties"));
69 System_start_delimiter::set_interface (delim_);
70 delim_->set_bound (LEFT, unsmob_element (get_property ("currentCommandColumn")));
73 You can't override the glyph using \property, you must do it in
74 the predefined context (ie. \translator { ... } )
76 SCM s = get_property ("systemStartDelimiterGlyph");
79 delim_->set_elt_property ("glyph", s);
82 announce_element (delim_,0);
86 System_start_delimiter_engraver::do_removal_processing ()
88 // ugh, should have naming without bracket
89 SCM collapse = get_property ("bracketCollapseHeight");
90 if (gh_number_p (collapse))
91 delim_->set_elt_property ("collapse-height", collapse);
93 delim_->set_bound (RIGHT, unsmob_element (get_property ("currentCommandColumn")));
94 typeset_element (delim_);