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grace-engraver.cc -- implement Grace_engraver
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source file of the GNU LilyPond music typesetter
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(c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
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class Grace_engraver : public Engraver
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void consider_change_grace_settings ();
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void start_translation_timestep ();
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virtual void derived_mark () const;
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virtual void initialize ();
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TRANSLATOR_DECLARATIONS (Grace_engraver);
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Grace_engraver::Grace_engraver ()
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grace_settings_ = SCM_EOL;
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last_moment_ = Moment (Rational (-1, 1));
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Grace_engraver::initialize ()
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consider_change_grace_settings ();
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Grace_engraver::consider_change_grace_settings ()
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Moment now = now_mom ();
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if (last_moment_.grace_part_ && !now.grace_part_)
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for (SCM s = grace_settings_; scm_is_pair (s); s = scm_cdr (s))
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SCM context = scm_caar (s);
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SCM entry = scm_cdar (s);
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SCM grob = scm_cadr (entry);
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SCM sym = scm_caddr (entry);
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execute_pushpop_property (unsmob_context (context),
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grob, sym, SCM_UNDEFINED);
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grace_settings_ = SCM_EOL;
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else if (!last_moment_.grace_part_ && now.grace_part_)
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SCM settings = get_property ("graceSettings");
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grace_settings_ = SCM_EOL;
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for (SCM s = settings; scm_is_pair (s); s = scm_cdr (s))
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SCM entry = scm_car (s);
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SCM context_name = scm_car (entry);
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SCM grob = scm_cadr (entry);
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SCM sym = scm_caddr (entry);
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SCM val = scm_cadr (scm_cddr (entry));
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Context *c = context ();
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while (c && !c->is_alias (context_name))
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c = c->get_parent_context ();
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execute_pushpop_property (c,
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= scm_cons (scm_cons (c->self_scm (), entry), grace_settings_);
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programming_error ("can't find context");
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scm_display (context_name, scm_current_error_port ());
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last_moment_ = now_mom ();
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Grace_engraver::derived_mark () const
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scm_gc_mark (grace_settings_);
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Engraver::derived_mark ();
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Grace_engraver::start_translation_timestep ()
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consider_change_grace_settings ();
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#include "translator.icc"
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ADD_TRANSLATOR (Grace_engraver,
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/* doc */ "Set font size and other properties for grace notes.",
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/* read */ "graceSettings",