+++ /dev/null
-/*
- local-key-engraver.cc -- implement Local_key_engraver
-
- (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-*/
-
-#include "musical-request.hh"
-#include "command-request.hh"
-#include "local-key-item.hh"
-#include "item.hh"
-#include "tie.hh"
-#include "rhythmic-head.hh"
-#include "timing-translator.hh"
-#include "engraver-group-engraver.hh"
-
-#include "staff-symbol-referencer.hh"
-#include "side-position-interface.hh"
-#include "engraver.hh"
-#include "arpeggio.hh"
-
-/**
-
-
- FIXME: should not compute vertical positioning of accidentals, but
- get them from the noteheads
-
- The algorithm for accidentals should be documented, and made
- tweakable.
-
-*/
-
-
-struct Local_key_engraver : Engraver {
- Item *key_item_p_;
-protected:
- TRANSLATOR_DECLARATIONS(Local_key_engraver);
- virtual void process_music ();
- virtual void acknowledge_grob (Grob_info);
- virtual void stop_translation_timestep ();
- virtual void initialize ();
- virtual void create_grobs ();
- virtual void finalize ();
-public:
-
- // todo -> property
- SCM last_keysig_;
-
- /*
- Urgh. Since the accidentals depend on lots of variables, we have to
- store all information before we can really create the accidentals.
- */
- Link_array<Grob> arpeggios_;
-
- Link_array<Note_req> mel_l_arr_;
- Link_array<Grob> support_l_arr_;
- Link_array<Item> forced_l_arr_;
- Link_array<Grob> tie_l_arr_;
-
-};
-
-Local_key_engraver::Local_key_engraver ()
-{
- key_item_p_ =0;
- last_keysig_ = SCM_EOL;
-}
-
-void
-Local_key_engraver::initialize ()
-{
- last_keysig_ = get_property ("keySignature");
- daddy_trans_l_->set_property ("localKeySignature", last_keysig_);
-}
-
-void
-Local_key_engraver::create_grobs ()
-{
- if (!key_item_p_ && mel_l_arr_.size ())
- {
- SCM localsig = get_property ("localKeySignature");
-
- for (int i=0; i < mel_l_arr_.size (); i++)
- {
- Grob * support_l = support_l_arr_[i];
- Note_req * note_l = mel_l_arr_[i];
-
- int n = unsmob_pitch (note_l->get_mus_property ("pitch"))->notename_i_;
- int o = unsmob_pitch (note_l->get_mus_property ("pitch"))->octave_i () ;
- int a = unsmob_pitch (note_l->get_mus_property ("pitch"))->alteration_i_;
-
- /* see if there's a tie that "changes" the accidental */
- /* works because if there's a tie, the note to the left
- is of the same pitch as the actual note */
-
- SCM prev = scm_assoc (gh_cons (gh_int2scm (o), gh_int2scm (n)), localsig);
- if (prev == SCM_BOOL_F)
- prev = scm_assoc (gh_int2scm (n), localsig);
- SCM prev_acc = (prev == SCM_BOOL_F) ? gh_int2scm (0) : ly_cdr (prev);
- bool different = !gh_equal_p (prev_acc , gh_int2scm (a));
- int p = gh_number_p (prev_acc) ? gh_scm2int (prev_acc) : 0;
-
- Grob *tie_break_reminder = 0;
- bool tie_changes = false;
- for (int i=0; i < tie_l_arr_.size (); i++)
- if (support_l == Tie::head (tie_l_arr_[i], RIGHT))
- {
- tie_changes = different;
- /* Enable accidentals for broken tie
-
- We only want an accidental on a broken tie,
- if the tie changes the accidental.
-
- Maybe check property noTieBreakForceAccidental? */
- if (different)
- tie_break_reminder = tie_l_arr_[i];
- break;
- }
-
- /* When do we want accidentals:
-
- 1. when property force-accidental is set, and not
- tie_changes
- 2. when different and not tie-changes
- 3. maybe when at end of a tie: we must later see if
- we're after a line break */
- if (( (to_boolean (note_l->get_mus_property ("force-accidental"))
- || different)
- && !tie_changes)
- || tie_break_reminder)
- {
- if (!key_item_p_)
- {
- key_item_p_ = new Item (get_property ("Accidentals"));
- Local_key_item::set_interface (key_item_p_);
-
-
- Staff_symbol_referencer::set_interface (key_item_p_);
- SCM c0 = get_property ("centralCPosition");
- if (gh_number_p (c0))
- Staff_symbol_referencer::set_position (key_item_p_, gh_scm2int (c0));
-
- announce_grob (key_item_p_, 0);
- }
-
-
- bool extra_natural =
- sign (p) * (p - a) == 1
- && abs (p) == 2;
-
- Local_key_item::add_pitch (key_item_p_, *unsmob_pitch (note_l->get_mus_property ("pitch")),
- to_boolean (note_l->get_mus_property ("cautionary")),
- extra_natural,
- tie_break_reminder);
- Side_position_interface::add_support (key_item_p_,support_l);
- }
-
- /*
- We should not record the accidental if it is the first
- note and it is tied from the previous measure.
-
- Checking whether it is tied also works mostly, but will it
- always do the correct thing?
-
- */
- bool forget = to_boolean (get_property ("forgetAccidentals"));
- if (tie_changes)
- {
- /*
- Remember an alteration that is different both from
- that of the tied note and of the key signature.
-
- */
- localsig = scm_assoc_set_x (localsig, gh_cons (gh_int2scm (o),
- gh_int2scm (n)),
- SCM_BOOL_T);
-
- }
- else if (!forget)
- {
- /*
- not really really correct if there are more than one
- noteheads with the same notename.
- */
- localsig = scm_assoc_set_x (localsig, gh_cons (gh_int2scm (o),
- gh_int2scm (n)),
- gh_int2scm (a));
-
- }
- }
-
-
-
-
- daddy_trans_l_->set_property ("localKeySignature", localsig);
- }
-
-
- if (key_item_p_)
- {
- /*
- Hmm. Which one has to be on the left?
-
- On which left, code or paper?
-
- (Arpeggios are engraved left of accidentals, of course.)
- */
- for (int i=0; i < arpeggios_.size (); i++)
- Side_position_interface::add_support (arpeggios_[i], key_item_p_);
-
- arpeggios_.clear ();
- }
-}
-
-void
-Local_key_engraver::finalize ()
-{
-
-}
-
-void
-Local_key_engraver::stop_translation_timestep ()
-{
- if (key_item_p_)
- {
- for (int i=0; i < support_l_arr_.size (); i++)
- Side_position_interface::add_support (key_item_p_,support_l_arr_[i]);
-
- typeset_grob (key_item_p_);
- key_item_p_ =0;
- }
-
-
- mel_l_arr_.clear ();
- arpeggios_.clear ();
- tie_l_arr_.clear ();
- support_l_arr_.clear ();
- forced_l_arr_.clear ();
-}
-
-void
-Local_key_engraver::acknowledge_grob (Grob_info info)
-{
- Note_req * note_l = dynamic_cast <Note_req *> (info.req_l_);
-
- if (note_l && Rhythmic_head::has_interface (info.grob_l_))
- {
- mel_l_arr_.push (note_l);
- support_l_arr_.push (info.grob_l_);
- }
- else if (Tie::has_interface (info.grob_l_))
- {
- tie_l_arr_.push (info.grob_l_);
- }
- else if (Arpeggio::has_interface (info.grob_l_))
- {
- arpeggios_.push (info.grob_l_);
- }
-
-}
-
-/*
- ugh. repeated deep_copy generates lots of garbage.
- */
-void
-Local_key_engraver::process_music ()
-{
- SCM smp = get_property ("measurePosition");
- Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
-
- SCM sig = get_property ("keySignature");
-
- /*
- Detect key sig changes. If we haven't found any, check if at start
- of measure, and set localKeySignature anyhow. */
- if (last_keysig_ != sig)
- {
- daddy_trans_l_->set_property ("localKeySignature", ly_deep_copy (sig));
- last_keysig_ = sig;
- }
- else if (!mp.to_bool () )
- {
- if (!to_boolean (get_property ("noResetKey")))
- daddy_trans_l_->set_property ("localKeySignature", ly_deep_copy (sig));
- }
-}
-
-
-
-
-
-ENTER_DESCRIPTION(Local_key_engraver,
-/* descr */ "Make accidentals. Catches note heads, ties and notices key-change
-events. Due to interaction with ties (which don't come together
-with note heads), this needs to be in a context higher than Tie_engraver. FIXME",
-/* creats*/ "Accidentals",
-/* acks */ "rhythmic-head-interface tie-interface arpeggio-interface",
-/* reads */ "localKeySignature forgetAccidentals noResetKey",
-/* write */ "");
projects / lilypond.git / commitdiff