source file of the GNU LilyPond music typesetter
- (c) 2000--2001 Jan Nieuwenhuizen <janneke@gnu.org>
- */
+ (c) 2000--2002 Jan Nieuwenhuizen <janneke@gnu.org>
+
+ Chris Jackson <chris@fluffhouse.org.uk> - extended to support
+ bracketed pedals.
+*/
#include "engraver.hh"
#include "musical-request.hh"
#include "grob.hh"
#include "item.hh"
#include "lily-guile.hh"
-#include "rhythmic-head.hh"
-#include "stem.hh"
#include "side-position-interface.hh"
#include "staff-symbol-referencer.hh"
#include "item.hh"
+#include "axis-group-interface.hh"
+#include "translator-group.hh"
+#include "directional-element-interface.hh"
+#include "note-column.hh"
+
+struct Pedal_info
+{
+ char const * name_;
+ Span_req* start_req_;
+ Drul_array<Span_req*> req_l_drul_;
+ Item* item_;
+ Spanner* bracket_; // A single portion of a pedal bracket
+ Spanner* finished_bracket_;
+
+ /*
+ This grob contains all the pedals of the same type on the same staff
+ */
+ Spanner* line_spanner_;
+ Spanner* finished_line_spanner_;
+ Span_req* current_bracket_req_;
+};
+
class Piano_pedal_engraver : public Engraver
{
public:
- VIRTUAL_COPY_CONS (Translator);
- Piano_pedal_engraver ();
+ TRANSLATOR_DECLARATIONS (Piano_pedal_engraver);
~Piano_pedal_engraver ();
protected:
virtual void initialize ();
+ virtual void finalize ();
virtual bool try_music (Music*);
virtual void stop_translation_timestep ();
virtual void start_translation_timestep ();
virtual void acknowledge_grob (Grob_info);
- virtual void create_grobs ();
+ virtual void process_acknowledged_grobs ();
private:
- struct Pedal_info
- {
- char const * name_;
- Span_req* start_req_l_;
- Drul_array<Span_req*> req_l_drul_;
- Item* item_p_;
- };
-
Pedal_info *info_list_;
+
+ /*
+ Record a stack of the current pedal spanners, so if more than one pedal
+ occurs simultaneously then extra space can be added between them.
+
+
+ Why 4, why not 3. Why not 3423 ? ---hwn.
+ */
+
+ Spanner *previous_ [4];
+
+ int spanner_count_;
+
+ /*
+ Left and right flare widths of a \___/, as specified by the grob
+ property edge-widen.
+ */
+ Drul_array<SCM> edge_width_drul_;
+
+ void create_text_grobs (Pedal_info *p, SCM pedaltype);
+ void create_bracket_grobs (Pedal_info *p, SCM pedaltype);
+ void typeset_all ();
};
-ADD_THIS_TRANSLATOR (Piano_pedal_engraver);
Piano_pedal_engraver::Piano_pedal_engraver ()
{
info_list_ = 0;
}
+
void
-Piano_pedal_engraver::initialize()
+Piano_pedal_engraver::initialize ()
{
info_list_ = new Pedal_info[4];
Pedal_info *p = info_list_;
+ spanner_count_ = 0;
+ for (int i = 0; i < 3; ++i)
+ previous_[i] = 0;
- char * names [] = { "Sostenuto", "Sustain", "UnaChorda", 0 };
+
+ char * names [] = { "Sostenuto", "Sustain", "UnaCorda", 0 };
char **np = names ;
do
{
p->name_ = *np;
- p->item_p_ = 0;
+ p->item_ = 0;
+ p->bracket_ = 0;
+ p->finished_bracket_ = 0;
+ p->line_spanner_ = 0;
+ p->finished_line_spanner_ = 0;
+ p->current_bracket_req_ = 0;
p->req_l_drul_[START] = 0;
p->req_l_drul_[STOP] = 0;
- p->start_req_l_ = 0;
+ p->start_req_ = 0;
p++;
}
- while (*(np ++));
+ while (* (np ++));
}
-Piano_pedal_engraver::~Piano_pedal_engraver()
+Piano_pedal_engraver::~Piano_pedal_engraver ()
{
delete[] info_list_;
}
{
for (Pedal_info*p = info_list_; p && p->name_; p ++)
{
- if (p->item_p_)
+ if (Note_column::has_interface (info.grob_))
{
- if (Rhythmic_head::has_interface (info.elem_l_))
- {
- Side_position::add_support (p->item_p_, info.elem_l_);
-
- if (Side_position::get_axis(p->item_p_) == X_AXIS
- && !p->item_p_->parent_l (Y_AXIS))
- p->item_p_->set_parent (info.elem_l_, Y_AXIS);
- }
- if (Stem::has_interface (info.elem_l_))
+ if (p->line_spanner_)
{
- Side_position::add_support (p->item_p_,info.elem_l_);
- }
+ Side_position_interface::add_support (p->line_spanner_, info.grob_);
+
+ add_bound_item (p->line_spanner_,info.grob_);
+ }
+ if (p->bracket_)
+ add_bound_item (p->bracket_,info.grob_);
+
}
}
}
bool
Piano_pedal_engraver::try_music (Music *m)
{
- if (Span_req * s = dynamic_cast<Span_req*>(m))
+ if (Span_req * s = dynamic_cast<Span_req*> (m))
{
for (Pedal_info*p = info_list_; p->name_; p ++)
{
+ if (ly_scm2string (s->get_mus_property ("span-type")) == "abort")
+ {
+ p->req_l_drul_[START] = 0;
+ p->req_l_drul_[STOP] = 0;
+
+ if (p->bracket_)
+ p->bracket_->suicide (); /* as in dynamic-engraver.cc */
+ p->bracket_ = 0;
+ }
if (scm_equal_p (s->get_mus_property ("span-type"),
- ly_str02scm (p->name_))==SCM_BOOL_T)
+ scm_makfrom0str (p->name_))==SCM_BOOL_T)
{
- p->req_l_drul_[s->get_span_dir()] = s;
+ p->req_l_drul_[s->get_span_dir ()] = s;
return true;
}
}
}
void
-Piano_pedal_engraver::create_grobs ()
+Piano_pedal_engraver::process_acknowledged_grobs ()
{
for (Pedal_info*p = info_list_; p && p->name_; p ++)
{
- if (p->item_p_ || ! (p->req_l_drul_[STOP] || p->req_l_drul_[START]))
- continue;
-
- SCM s = SCM_EOL;
- SCM strings = get_property( ("pedal" + String (p->name_) + "Strings").ch_C());
- if( scm_ilength (strings) < 3)
- continue;
-
- if (p->req_l_drul_[STOP] && p->req_l_drul_[START])
+ if (p->req_l_drul_[STOP] || p->req_l_drul_[START])
{
- if (!p->start_req_l_)
+ if (!p->line_spanner_)
{
- p->req_l_drul_[STOP]->origin ()->warning (_f ("can't find start of piano pedal: %s", p->name_ ));
+ String name = String (p->name_) + "PedalLineSpanner";
+ p->line_spanner_ = new Spanner (get_property (name.to_str0 ()));
+ Side_position_interface::set_axis (p->line_spanner_, Y_AXIS);
+ Music * rq = (p->req_l_drul_[START] ? p->req_l_drul_[START] : p->req_l_drul_[STOP]);
+ announce_grob (p->line_spanner_, rq->self_scm ());
}
- else
+
+ /* Choose the appropriate grobs to add to the line spanner
+ These can be text items or text-spanners
+ */
+ SCM type = ly_cdr (scm_assoc (ly_symbol2scm ("pedal-type"),
+ get_property ( (String (p->name_) + "Pedal").to_str0 ())));
+ if (type == ly_symbol2scm ("text") || // Ped. *Ped. *
+ type == ly_symbol2scm ("mixed") ) // Ped. _____/\____|
{
- s = gh_cadr (strings);
+ if (! p->item_)
+ create_text_grobs (p, type);
}
- p->start_req_l_ = p->req_l_drul_[START];
+ if (type == ly_symbol2scm ("bracket") || // |_________/\____|
+ type == ly_symbol2scm ("mixed") )
+ {
+ create_bracket_grobs (p, type);
+ }
}
- else if (p->req_l_drul_[STOP])
+ }
+}
+
+
+void
+Piano_pedal_engraver::create_text_grobs (Pedal_info *p, SCM pedaltype)
+{
+ SCM b;
+ SCM s = SCM_EOL;
+ SCM strings = get_property ( ("pedal" + String (p->name_) + "Strings").to_str0 ());
+
+ if (scm_ilength (strings) >= 3)
+ {
+ if (p->req_l_drul_[STOP] && p->req_l_drul_[START])
{
- if (!p->start_req_l_)
+ if (pedaltype == ly_symbol2scm ("text"))
{
- p->req_l_drul_[STOP]->origin ()->warning (_f ("can't find start of piano pedal: %s", p->name_ ));
+ if (!p->start_req_)
+ {
+ p->req_l_drul_[STOP]->origin ()->warning (_f ("can't find start of piano pedal: `%s'", p->name_));
+ }
+ else
+ {
+ s = ly_cadr (strings);
+ }
+ p->start_req_ = p->req_l_drul_[START];
}
- else
+ }
+ else if (p->req_l_drul_[STOP])
+ {
+ if (pedaltype == ly_symbol2scm ("text"))
{
- s = gh_car (strings);
+ if (!p->start_req_)
+ {
+ p->req_l_drul_[STOP]->origin ()->warning (_f ("can't find start of piano pedal: `%s'", p->name_));
+ }
+ else
+ {
+ s = ly_caddr (strings);
+ spanner_count_ --;
+ }
+ p->start_req_ = 0;
}
- p->start_req_l_ = 0;
}
else if (p->req_l_drul_[START])
{
- p->start_req_l_ = p->req_l_drul_[START];
- s = gh_caddr (strings);
+ p->start_req_ = p->req_l_drul_[START];
+ s = ly_car (strings);
+ if (pedaltype == ly_symbol2scm ("text"))
+ {
+ spanner_count_ ++;
+ previous_[spanner_count_] = p->line_spanner_;
+ if (spanner_count_ > 1)
+ // add extra space below the previous already-occuring pedal
+ Side_position_interface::add_support (p->line_spanner_,
+ previous_[spanner_count_ - 1]);
+ }
}
-
+
if (gh_string_p (s))
{
String propname = String (p->name_) + "Pedal";
- p->item_p_ = new Item (get_property (propname.ch_C()));
- p->item_p_->set_grob_property ("text", s);
+ b = get_property (propname.to_str0 ());
+ p->item_ = new Item (b);
+ p->item_->set_grob_property ("text", s);
+ Axis_group_interface::add_element (p->line_spanner_, p->item_);
+
+ announce_grob (p->item_,
+ (p->req_l_drul_[START]
+ ? p->req_l_drul_[START]
+ : p->req_l_drul_[STOP])->self_scm ());
+
+ }
+ if (pedaltype == ly_symbol2scm ("text"))
+ {
+ p->req_l_drul_[START] = 0;
+ p->req_l_drul_[STOP] = 0;
+ }
+ }
+}
+
+void
+Piano_pedal_engraver::create_bracket_grobs (Pedal_info *p, SCM pedaltype)
+{
- announce_grob (p->item_p_,
- p->req_l_drul_[START]
- ? p->req_l_drul_[START]
- : p->req_l_drul_[STOP]);
+ if (p->req_l_drul_[STOP])
+ {
+ if (!p->start_req_)
+ {
+ p->req_l_drul_[STOP]->origin ()->warning (_f ("can't find start of piano pedal: `%s'", p->name_));
+ }
+ else if (!p->req_l_drul_[START])
+ spanner_count_ -- ;
+
+ assert (!p->finished_bracket_ && p->bracket_);
+
+ Grob *cmc = unsmob_grob (get_property ("currentMusicalColumn"));
+ p->bracket_->set_bound (RIGHT, cmc);
+
+ /*
+ Set properties so that the molecule-creating function will
+ know whether the right edge should be flared ___/
+ */
+ SCM eleft = ly_car (p->bracket_->get_grob_property ("edge-widen"));
+ SCM eright = (p->req_l_drul_[START] ? edge_width_drul_[RIGHT] : gh_double2scm (0));
+ p->bracket_->set_grob_property ("edge-widen", gh_cons (eleft, eright));
+
+ p->finished_bracket_ = p->bracket_;
+ p->bracket_ = 0;
+ p->current_bracket_req_ = 0;
+ p->start_req_ = p->req_l_drul_[START];
+ }
+
+ if (p->req_l_drul_[START])
+ {
+ p->start_req_ = p->req_l_drul_[START];
+ p->current_bracket_req_ = p->req_l_drul_[START];
+
+ p->bracket_ = new Spanner (get_property ("PianoPedalBracket"));
+
+ /*
+ Set properties so that the molecule-creating function will
+ know whether the left edge should be flared \___
+ */
+
+ SCM ew = p->bracket_->get_grob_property ("edge-widen");
+ edge_width_drul_[LEFT] = ly_car (ew);
+ edge_width_drul_[RIGHT] = ly_cdr (ew);
+
+ SCM eleft = ( (bool) p->req_l_drul_[STOP] ?
+ edge_width_drul_[LEFT] :
+ gh_double2scm (0));
+ SCM eright = gh_double2scm (0);
+ p->bracket_->set_grob_property ("edge-widen", gh_cons (eleft, eright));
+
+ /* Set this property for 'mixed style' pedals, Ped._______/\ ,
+ so the molecule function will shorten the ____ line by the length of the Ped. text.
+ */
+
+ p->bracket_->set_grob_property ("text-start",
+ pedaltype == ly_symbol2scm ("mixed") ?
+ gh_bool2scm ( (bool) ! p->req_l_drul_[STOP]) :
+ gh_bool2scm (false));
+
+ /*
+ Mixed style: Store a pointer to the preceding text for use in
+ calculating the length of the line
+ */
+ if (p->item_)
+ p->bracket_->set_grob_property ("pedal-text", p->item_->self_scm ());
+
+ p->bracket_->set_bound (LEFT, unsmob_grob (get_property ("currentMusicalColumn")));
+ Axis_group_interface::add_element (p->line_spanner_, p->bracket_);
+
+ add_bound_item (p->line_spanner_, p->bracket_->get_bound (LEFT));
+ announce_grob (p->bracket_, p->req_l_drul_[START]->self_scm ());
+
+ if (!p->req_l_drul_[STOP])
+ {
+ spanner_count_ ++;
+ previous_[spanner_count_] = p->line_spanner_;
+
+ if (spanner_count_ > 1)
+ // position new pedal spanner below the current one
+ Side_position_interface::add_support (p->line_spanner_, previous_[spanner_count_ - 1]);
+ }
+ }
+
+ p->req_l_drul_[START] = 0;
+ p->req_l_drul_[STOP] = 0;
+}
+
+void
+Piano_pedal_engraver::finalize ()
+{
+ for (Pedal_info*p = info_list_; p && p->name_; p ++)
+ {
+ /*
+ suicide?
+ */
+ if (p->line_spanner_
+ && !p->line_spanner_->live())
+ p->line_spanner_ = 0;
+
+ if (p->line_spanner_)
+ {
+ p->finished_line_spanner_ = p->line_spanner_;
+ typeset_all ();
+ }
+ if (p->bracket_
+ && !p->bracket_->live())
+ p->bracket_ = 0;
+ if (p->bracket_)
+ {
+ p->current_bracket_req_->origin ()->warning (_ ("unterminated pedal bracket"));
+ p->bracket_->suicide ();
+ p->bracket_ = 0;
}
- p->req_l_drul_[START] = 0;
- p->req_l_drul_[STOP] = 0;
}
}
+
void
Piano_pedal_engraver::stop_translation_timestep ()
{
- Item * sustain = 0;
- for (Pedal_info*p = info_list_; p->name_; p ++)
+ for (Pedal_info*p = info_list_; p && p->name_; p ++)
{
- if (p->name_ == String ("Sustain"))
- sustain = p->item_p_;
+ if (!p->bracket_)
+ {
+ p->finished_line_spanner_ = p->line_spanner_;
+ p->line_spanner_ = 0;
+ }
}
+
+ typeset_all ();
+}
+
+void
+Piano_pedal_engraver::typeset_all ()
+{
+ Item * sustain = 0;
for (Pedal_info*p = info_list_; p->name_; p ++)
{
- if (p->item_p_)
+ /*
+ Handle suicide.
+ */
+ if (p->finished_line_spanner_
+ && !p->finished_line_spanner_->live ())
+ p->finished_line_spanner_ = 0;
+ if (p->finished_bracket_
+ && !p->finished_bracket_->live())
+ p->finished_bracket_ = 0;
+
+
+ if (p->name_ == String ("Sustain"))
+ sustain = p->item_;
+
+ if (p->item_)
{
- Side_position::add_staff_support (p->item_p_);
-
/*
Hmm.
*/
{
if (sustain)
{
- Side_position::add_support (p->item_p_,sustain);
+ Side_position_interface::add_support (p->item_,sustain);
}
}
- typeset_grob (p->item_p_);
+ typeset_grob (p->item_);
+ p->item_ = 0;
+ }
+
+ if (p->finished_bracket_)
+ {
+ Grob * l = p->finished_bracket_->get_bound (LEFT);
+ Grob * r = p->finished_bracket_->get_bound (RIGHT);
+ if (!r)
+ {
+ p->finished_bracket_->set_bound (RIGHT, unsmob_grob (get_property ("currentMusicalColumn")));
+ }
+
+ typeset_grob (p->finished_bracket_);
+ p->finished_bracket_ =0;
+ }
+
+ if (p->finished_line_spanner_)
+ {
+ Side_position_interface::add_staff_support (p->finished_line_spanner_);
+ Grob * l = p->finished_line_spanner_->get_bound (LEFT);
+ Grob * r = p->finished_line_spanner_->get_bound (RIGHT);
+ if (!r && l)
+ p->finished_line_spanner_->set_bound (RIGHT, l);
+ else if (!l && r)
+ p->finished_line_spanner_->set_bound (LEFT, r);
+ else if (!r && !l)
+ {
+ Grob * cc = unsmob_grob (get_property ("currentMusicalColumn"));
+ Item * ci = dynamic_cast<Item*> (cc);
+ p->finished_line_spanner_->set_bound (RIGHT, ci);
+ p->finished_line_spanner_->set_bound (LEFT, ci);
+ }
+ typeset_grob (p->finished_line_spanner_);
+ p->finished_line_spanner_ = 0;
}
- p->item_p_ = 0;
}
}
p->req_l_drul_[START] = 0;
}
}
+ENTER_DESCRIPTION (Piano_pedal_engraver,
+/* descr */ "Engrave piano pedal symbols and brackets.",
+/* creats*/ "SostenutoPedal SustainPedal UnaCordaPedal SostenutoPedalLineSpanner SustainPedalLineSpanner UnaCordaPedalLineSpanner",
+/* acks */ "note-column-interface",
+/* reads */ "pedalSostenutoStrings pedalSustainStrings pedalUnaCordaStrings",
+/* write */ "");
projects / lilypond.git / blobdiff