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"
18 class System_start_delimiter_engraver : public Engraver
21 VIRTUAL_COPY_CONS(Translator);
22 System_start_delimiter_engraver();
26 virtual void acknowledge_element (Score_element_info);
27 virtual void do_creation_processing ();
28 virtual void do_removal_processing ();
31 ADD_THIS_TRANSLATOR(System_start_delimiter_engraver);
34 System_start_delimiter_engraver::acknowledge_element (Score_element_info inf)
36 if (dynamic_cast<Staff_symbol*> (inf.elem_l_))
39 don't add as Axis_group_interface (delim_).add_element (),
40 because that would set the parent as well */
42 Group_interface (delim_).add_element (inf.elem_l_);
44 else if (System_start_delimiter * b = dynamic_cast<System_start_delimiter *> (inf.elem_l_))
46 SCM gl = b->get_elt_property ("glyph");
47 SCM my_gl = delim_->get_elt_property ("glyph");
52 if (gh_symbol_p (gl) && gl == ly_symbol2scm ("brace")
53 && gh_symbol_p (my_gl) && my_gl == ly_symbol2scm ("bracket"))
54 b->translate_axis ( -paper_l ()->get_var ("interline"), X_AXIS); // ugh
59 System_start_delimiter_engraver::System_start_delimiter_engraver()
65 System_start_delimiter_engraver::do_creation_processing()
67 delim_ = new System_start_delimiter;
68 delim_->set_bound (LEFT, get_staff_info ().command_pcol_l ());
71 You can't override the glyph using \property, you must do it in
72 the predefined context (ie. \translator { ... } )
74 SCM s = get_property ("systemStartDelimiterGlyph");
77 delim_->set_elt_property ("glyph", s);
80 announce_element (Score_element_info (delim_,0));
84 System_start_delimiter_engraver::do_removal_processing ()
86 // ugh, should have naming without bracket
87 SCM collapse = get_property ("bracketCollapseHeight");
88 if (gh_number_p (collapse))
89 delim_->set_elt_property ("collapse-height", collapse);
91 delim_->set_elt_property ("collapse-height", gh_double2scm (1));
93 delim_->set_bound (RIGHT, get_staff_info ().command_pcol_l ());
94 typeset_element (delim_);