2 mark-engraver.cc -- implement Mark_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "bar-line.hh"
13 #include "engraver-group-engraver.hh"
14 #include "engraver.hh"
17 #include "text-item.hh"
20 put stuff over or next to bars. Examples: bar numbers, marginal notes,
23 class Mark_engraver : public Engraver
26 TRANSLATOR_DECLARATIONS (Mark_engraver);
30 virtual void stop_translation_timestep ();
31 virtual void acknowledge_grob (Grob_info);
32 void create_items (Music*);
33 virtual bool try_music (Music *ev);
34 virtual void process_music ();
44 Mark_engraver::Mark_engraver ()
52 Mark_engraver::acknowledge_grob (Grob_info inf)
55 if (text_ && Bar_line::has_interface (s))
58 TODO: make this configurable. RehearsalMark cannot be
59 break-aligned, since the width of the object should not be taken
60 into alignment considerations.
62 text_->set_parent (s, X_AXIS);
67 Mark_engraver::stop_translation_timestep ()
71 SCM lst = get_property ("stavesFound");
72 text_->set_property ("side-support-elements" , lst);
81 Mark_engraver::create_items (Music *ev)
86 text_ = make_item ("RehearsalMark");
87 announce_grob (text_, ev->self_scm ());
92 Mark_engraver::try_music (Music* r)
100 TODO: make the increment function in Scheme.
103 Mark_engraver::process_music ()
107 create_items (mark_ev_);
114 SCM m = mark_ev_->get_property ("label");
115 SCM proc = get_property ("markFormatter");
116 if (!Text_item::markup_p (m) &&
117 gh_procedure_p (proc))
119 if (!gh_number_p (m))
120 m = get_property ("rehearsalMark");
122 if (scm_integer_p (m) == SCM_BOOL_T
123 && scm_exact_p (m) == SCM_BOOL_T)
125 int mark_count = gh_scm2int (m);
127 daddy_context_->set_property ("rehearsalMark",
128 gh_int2scm (mark_count));
132 m = scm_call_2 (proc, m, daddy_context_->self_scm ());
134 warning ("rehearsalMark does not have integer value.");
137 if (Text_item::markup_p (m))
138 text_->set_property ("text", m);
140 warning ("Mark label should be markup object.");
144 ENTER_DESCRIPTION (Mark_engraver,
145 /* descr */ "This engraver will create RehearsalMark objects. "
146 "It puts them on top of all staves (which is taken from "
147 "the property @code{stavesFound}). If moving this engraver "
148 "to a different context, "
149 "@ref{Staff_collecting_engraver} must move along, otherwise all marks"
150 "end up on the same Y-location"
152 /* creats*/ "RehearsalMark",
153 /* accepts */ "mark-event",
154 /* acks */ "bar-line-interface",
155 /* reads */ "rehearsalMark markFormatter stavesFound",