-/*
- beam-grav.cc -- implement Beam_engraver
-
+/*
+ beam-engraver.cc -- implement Beam_engraver
+
source file of the GNU LilyPond music typesetter
+
+ (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+
+ */
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-*/
-#include "duration-convert.hh"
-#include "time-description.hh"
#include "beam-engraver.hh"
-#include "stem.hh"
-#include "beam.hh"
#include "musical-request.hh"
-#include "grouping.hh"
-#include "p-col.hh"
+#include "beam.hh"
+#include "rhythmic-grouping.hh"
+#include "stem.hh"
#include "warn.hh"
+#include "time-description.hh"
-Beam_engraver::Beam_engraver()
+Beam_engraver::Beam_engraver ()
{
- span_reqs_drul_[LEFT] = span_reqs_drul_[RIGHT] =0;
- beam_p_ =0;
- current_grouping_p_ =0;
+ beam_p_ = 0;
+ finished_beam_p_ =0;
+ finished_grouping_p_ = 0;
+ grouping_p_ =0;
+ reqs_drul_[LEFT] = reqs_drul_[RIGHT] =0;
+ prev_start_req_ =0;
}
bool
-Beam_engraver::do_try_request(Request*r)
+Beam_engraver::do_try_music (Music *m)
{
- Beam_req* b = dynamic_cast <Beam_req *> (r);
- if (!b)
- return false;
-
- if (bool (beam_p_) == bool (b->spantype == Span_req::START))
- return false;
-
- Direction d = (!beam_p_) ? LEFT : RIGHT;
- if (span_reqs_drul_[d] && !span_reqs_drul_[d]->equal_b (b))
- return false;
-
- span_reqs_drul_[d] = b;
- return true;
+ if (Span_req * c = dynamic_cast<Span_req*>(m))
+ {
+ if (c->span_type_str_ != "beam")
+ return false;
+
+ Direction d =c->span_dir_;
+
+ if (d == STOP && !beam_p_)
+ {
+ m->warning (_ ("No Beam to end"));
+ return false;
+ }
+ reqs_drul_[d ] = c;
+ return true;
+ }
+ return false;
}
+
void
-Beam_engraver::do_process_requests()
+Beam_engraver::do_process_requests ()
{
- if (beam_p_ || !span_reqs_drul_[LEFT])
- return;
-
- current_grouping_p_ = new Rhythmic_grouping;
- beam_p_ = new Beam;
-
- Scalar prop = get_property ("beamslopedamping");
- if (prop.isnum_b ())
- beam_p_->damping_i_ = prop;
-
- prop = get_property ("beamquantisation");
- if (prop.isnum_b ())
- beam_p_->quantisation_ = (Beam::Quantisation)(int)prop;
+ if (reqs_drul_[STOP])
+ {
+ if (!beam_p_)
+ reqs_drul_[STOP]->warning (_("No beam to end"));
+ prev_start_req_ =0;
+ finished_beam_p_ = beam_p_;
+ finished_grouping_p_ = grouping_p_;
+
+ beam_p_ = 0;
+ grouping_p_ = 0;
+ }
+
+ if (reqs_drul_[START])
+ {
+ if (beam_p_)
+ {
+ reqs_drul_[START]->warning (_ ("Already have a Beam"));
+ return;
+ }
+
+ prev_start_req_ = reqs_drul_[START];
+ beam_p_ = new Beam;
+ grouping_p_ = new Rhythmic_grouping;
+
+ Scalar prop = get_property ("beamslopedamping", 0);
+ if (prop.isnum_b ())
+ beam_p_->set_elt_property (damping_scm_sym, gh_int2scm( prop));
+
+ prop = get_property ("beamquantisation", 0);
+ if (prop.isnum_b ())
+ beam_p_->quantisation_ = (Beam::Quantisation)(int)prop;
- announce_element (Score_element_info (beam_p_, span_reqs_drul_[LEFT]));
+ announce_element (Score_element_info (beam_p_, reqs_drul_[START]));
+ }
}
void
-Beam_engraver::do_pre_move_processing()
+Beam_engraver::typeset_beam ()
{
- if (!beam_p_ || !span_reqs_drul_[RIGHT])
- return;
-
- Rhythmic_grouping const * rg_C = get_staff_info().rhythmic_C_;
- rg_C->extend (current_grouping_p_->interval());
- beam_p_->set_grouping (*rg_C, *current_grouping_p_);
- typeset_element (beam_p_);
- beam_p_ = 0;
+ if (finished_beam_p_)
+ {
+ Rhythmic_grouping const * rg_C = get_staff_info().rhythmic_C_;
+ rg_C->extend (finished_grouping_p_->interval());
+ finished_beam_p_->set_grouping (*rg_C, *finished_grouping_p_);
+ typeset_element (finished_beam_p_);
+ finished_beam_p_ = 0;
+
+ delete finished_grouping_p_;
+ finished_grouping_p_= 0;
+
+ reqs_drul_[STOP] = 0;
+ }
+}
- delete current_grouping_p_;
- current_grouping_p_ = 0;
+void
+Beam_engraver::do_post_move_processing ()
+{
+ reqs_drul_ [START] =0;
+}
- span_reqs_drul_[RIGHT] = span_reqs_drul_[LEFT] = 0;
+void
+Beam_engraver::do_pre_move_processing ()
+{
+ typeset_beam ();
}
void
-Beam_engraver::do_removal_processing()
+Beam_engraver::do_removal_processing ()
{
+ typeset_beam ();
if (beam_p_)
{
- span_reqs_drul_[LEFT]->warning (_("unterminated beam"));
- typeset_element (beam_p_);
- beam_p_ =0;
+ prev_start_req_->warning (_ ("Unfinished beam"));
+ finished_beam_p_ = beam_p_;
+ finished_grouping_p_ = grouping_p_;
+ typeset_beam ();
}
}
-
void
-Beam_engraver::acknowledge_element (Score_element_info i)
+Beam_engraver::acknowledge_element (Score_element_info info)
{
- Stem* s = dynamic_cast<Stem *> (i.elem_l_);
- if (!beam_p_ || !s)
- return;
-
- if (!dynamic_cast <Rhythmic_req *> (i.req_l_))
+ if (beam_p_)
{
- ::warning ( _("Stem must have Rhythmic structure."));
- return;
+ Stem* stem_l = dynamic_cast<Stem *> (info.elem_l_);
+ if (!stem_l || stem_l->beam_l_)
+ return;
+
+ bool self_grace = beam_p_->get_elt_property (grace_scm_sym) != SCM_BOOL_F;
+ bool stem_grace = stem_l->get_elt_property (grace_scm_sym) != SCM_BOOL_F;
+
+ if (!self_grace && stem_grace)
+ return;
+
+ Rhythmic_req *rhythmic_req = dynamic_cast <Rhythmic_req *> (info.req_l_);
+ if (!rhythmic_req)
+ {
+ String s = _ ("Stem must have Rhythmic structure.");
+ if (info.req_l_)
+ info.req_l_->warning (s);
+ else
+ ::warning (s);
+
+ return;
+ }
+
+
+ if (rhythmic_req->duration_.durlog_i_<= 2)
+ {
+ rhythmic_req->warning (_ ("stem doesn't fit in beam"));
+ prev_start_req_->warning (_ ("beam was started here"));
+ return;
+ }
+
+ /*
+ TODO: do something sensible if it doesn't fit in the beam.
+ */
+ Moment start = get_staff_info().time_C_->whole_in_measure_;
+
+ if (!grouping_p_->child_fit_b (start))
+ {
+ String s (_ ("please fix me") + ": "
+ + _f ("stem at %s doesn't fit in beam", now_mom ().str ()));
+
+ if (info.req_l_)
+ info.req_l_->warning(s);
+ else
+ warning (s);
+ }
+ else
+ {
+ grouping_p_->add_child (start, rhythmic_req->length_mom ());
+ stem_l->flag_i_ = rhythmic_req->duration_.durlog_i_;
+ beam_p_->add_stem (stem_l);
+ }
}
+}
- Rhythmic_req *rhythmic_req = dynamic_cast <Rhythmic_req *> (i.req_l_);
- if (rhythmic_req->duration_.durlog_i_<= 2)
- {
- rhythmic_req->warning (_ ("stem doesn't fit in beam"));
- return;
- }
- /*
- TODO: do something sensible if it doesn't fit in the beam.
- */
- Moment start = get_staff_info().time_C_->whole_in_measure_;
- if (!current_grouping_p_->child_fit_b (start))
- {
- String s (_("please fix me") + ": "
- + _f ("stem at %s doesn't fit in beam", now_moment ().str ()));
- if (i.req_l_)
- i.req_l_->warning(s);
- else
- warning (s);
- }
- else
- {
- current_grouping_p_->add_child (start, rhythmic_req->duration ());
- s->flag_i_ = rhythmic_req->duration_.durlog_i_;
- beam_p_->add_stem (s);
- }
-}
-IMPLEMENT_IS_TYPE_B1(Beam_engraver, Engraver);
ADD_THIS_TRANSLATOR(Beam_engraver);
projects / lilypond.git / blobdiff