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 TODO: rename this to system-open-engraver (or whatever.)
22 class System_start_delimiter_engraver : public Engraver
25 VIRTUAL_COPY_CONS(Translator);
26 System_start_delimiter_engraver();
31 virtual void acknowledge_element (Score_element_info);
32 virtual void do_creation_processing ();
33 virtual void do_removal_processing ();
36 ADD_THIS_TRANSLATOR(System_start_delimiter_engraver);
40 System_start_delimiter_engraver::acknowledge_element (Score_element_info inf)
42 if (dynamic_cast<Staff_symbol*> (inf.elem_l_))
45 don't add as Axis_group_interface (spanbar_).add_element (),
46 because that would set the parent as well */
48 Group_interface (spanbar_).add_element (inf.elem_l_);
50 else if (System_start_delimiter * b = dynamic_cast<System_start_delimiter *> (inf.elem_l_))
52 SCM gl = b->get_elt_property ("glyph");
53 SCM my_gl = get_property ("spanBarGlyph");
58 if (gh_symbol_p (gl) && gl == ly_symbol2scm ("brace")
59 && gh_symbol_p (my_gl) && my_gl == ly_symbol2scm ("bracket"))
60 b->translate_axis ( -paper_l ()->get_var ("interline"), X_AXIS); // ugh
65 System_start_delimiter_engraver::System_start_delimiter_engraver()
71 System_start_delimiter_engraver::do_creation_processing()
73 spanbar_ = new System_start_delimiter;
74 spanbar_->set_bound (LEFT, get_staff_info ().command_pcol_l ());
75 announce_element (Score_element_info (spanbar_,0));
79 System_start_delimiter_engraver::do_removal_processing ()
81 SCM s = get_property ("systemStartDelimiterGlyph");
84 spanbar_->set_elt_property ("glyph", s);
87 // ugh, should have naming without bracket
88 SCM collapse = get_property ("bracketCollapseHeight");
89 if (gh_number_p (collapse))
90 spanbar_->set_elt_property ("collapse-height", collapse);
92 spanbar_->set_elt_property ("collapse-height", gh_double2scm (1));
94 spanbar_->set_bound (RIGHT, get_staff_info ().command_pcol_l ());
95 typeset_element (spanbar_);