2 score-elem.cc -- implement Score_element
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
12 #include "group-interface.hh"
14 #include "paper-score.hh"
15 #include "paper-def.hh"
17 #include "molecule.hh"
18 #include "score-element.hh"
21 #include "line-of-score.hh"
23 #include "paper-column.hh"
24 #include "molecule.hh"
26 #include "paper-outputter.hh"
27 #include "dimension-cache.hh"
28 #include "side-position-interface.hh"
34 remove dynamic_cast<Spanner,Item> and put this code into respective
38 Score_element::Score_element()
40 dim_cache_[X_AXIS] = new Dimension_cache;
41 dim_cache_[Y_AXIS] = new Dimension_cache;
42 dim_cache_[X_AXIS]->elt_l_ = dim_cache_[Y_AXIS]->elt_l_ = this;
47 dim_cache_[X_AXIS]->set_extent_callback (molecule_extent);
48 dim_cache_[Y_AXIS]->set_extent_callback (molecule_extent);
55 element_property_alist_ = SCM_EOL;
60 set_elt_property ("dependencies", SCM_EOL);
61 set_elt_property ("interfaces", SCM_EOL);
65 Score_element::Score_element (Score_element const&s)
67 dim_cache_[X_AXIS] = new Dimension_cache (*s.dim_cache_[X_AXIS]);
68 dim_cache_[Y_AXIS] = new Dimension_cache (*s.dim_cache_[Y_AXIS]);
69 dim_cache_[X_AXIS]->elt_l_ = dim_cache_[Y_AXIS]->elt_l_ = this;
73 original_l_ =(Score_element*) &s;
74 element_property_alist_ = SCM_EOL; // onstack;
76 status_i_ = s.status_i_;
77 lookup_l_ = s.lookup_l_;
78 pscore_l_ = s.pscore_l_;
83 Score_element::~Score_element()
85 delete dim_cache_[X_AXIS];
86 delete dim_cache_[Y_AXIS];
89 // should also have one that takes SCM arg.
91 Score_element::get_elt_property (String nm) const
93 SCM sym = ly_symbol2scm (nm.ch_C());
94 SCM s = scm_assq(sym, element_property_alist_);
101 SCM sym2 = ly_symbol2scm ((name () + ("::" + nm)).ch_C());
104 // should probably check for Type::sym as well.
105 Paper_def * p= pscore_l_->paper_l_;
106 if (p->default_properties_.try_retrieve (sym2, &val))
108 else if (p->default_properties_.try_retrieve (sym, &val))
112 return SCM_UNDEFINED;
116 Score_element::remove_elt_property (String key)
118 SCM s = get_elt_property (key);
119 SCM sym = ly_symbol2scm (key.ch_C());
120 element_property_alist_ = scm_assq_remove_x (element_property_alist_, sym);
128 Score_element::set_elt_property (String k, SCM v)
130 SCM s = ly_symbol2scm (k.ch_C( ));
131 element_property_alist_ = scm_assoc_set_x (element_property_alist_, s, v);
135 Score_element::molecule_extent (Dimension_cache const *c)
137 Score_element *s = dynamic_cast<Score_element*>(c->element_l());
138 Molecule m = s->do_brew_molecule();
139 return m.extent(c->axis ());
143 Score_element::preset_extent (Dimension_cache const *c)
145 Score_element *s = dynamic_cast<Score_element*>(c->element_l());
146 SCM ext = s->get_elt_property ((c->axis () == X_AXIS)
152 Real l = gh_scm2double (gh_car (ext));
153 Real r = gh_scm2double (gh_cdr (ext));
154 l *= s->paper_l ()->get_var ("staffspace");
155 r *= s->paper_l ()->get_var ("staffspace");
156 return Interval (l, r);
164 Score_element::print() const
167 DEBUG_OUT << classname(this) << "{\n";
169 if (flower_dstream && !flower_dstream->silent_b ("Score_element"))
170 ly_display_scm (element_property_alist_);
173 DEBUG_OUT << "Copy ";
181 Score_element::paper_l () const
183 return pscore_l_ ? pscore_l_->paper_l_ : 0;
187 Score_element::lookup_l () const
191 Score_element * urg = (Score_element*)this;
192 SCM sz = urg->remove_elt_property ("fontsize");
193 int i = (gh_number_p (sz))
197 urg->lookup_l_ = (Lookup*)pscore_l_->paper_l_->lookup_l (i);
203 Score_element::add_processing()
205 assert (status_i_ >=0);
214 Score_element::calculate_dependencies (int final, int busy,
215 Score_element_method_pointer funcptr)
217 assert (status_i_ >=0);
219 if (status_i_ >= final)
222 if (status_i_== busy)
224 programming_error ("Element is busy, come back later");
230 for (SCM d= get_elt_property ("dependencies"); gh_pair_p (d); d = gh_cdr (d))
232 unsmob_element (gh_car (d))
233 ->calculate_dependencies (final, busy, funcptr);
241 Score_element::get_molecule () const
243 if (to_boolean (get_elt_property ("transparent")))
246 return do_brew_molecule ();
256 Score_element::do_break_processing()
261 Score_element::after_line_breaking ()
267 Score_element::before_line_breaking ()
272 Score_element::do_space_processing ()
277 Score_element::do_add_processing()
286 Score_element::do_brew_molecule() const
288 SCM glyph = get_elt_property ("glyph");
289 if (gh_string_p (glyph))
291 return lookup_l ()->afm_find (String (ly_scm2string (glyph)));
304 Score_element::line_l() const
310 Score_element::add_dependency (Score_element*e)
314 Group_interface gi (this, "dependencies");
318 programming_error ("Null dependency added");
325 Do break substitution in S, using CRITERION. Return new value.
326 CRITERION is either a SMOB pointer to the desired line, or a number
327 representing the break direction. Do not modify SRC.
330 Score_element::handle_broken_smobs (SCM src, SCM criterion)
333 Score_element *sc = unsmob_element (src);
336 if (gh_number_p (criterion))
338 Item * i = dynamic_cast<Item*> (sc);
339 Direction d = to_dir (criterion);
340 if (i && i->break_status_dir () != d)
342 Item *br = i->find_prebroken_piece (d);
343 return (br) ? br->self_scm_ : SCM_UNDEFINED;
349 = dynamic_cast<Line_of_score*> (unsmob_element (criterion));
350 if (sc->line_l () != line)
352 sc = sc->find_broken_piece (line);
356 /* now: !sc || (sc && sc->line_l () == line) */
358 return SCM_UNDEFINED;
360 /* now: sc && sc->line_l () == line */
362 || (sc->common_refpoint (line, X_AXIS)
363 && sc->common_refpoint (line, Y_AXIS)))
365 return sc->self_scm_;
367 return SCM_UNDEFINED;
370 else if (gh_pair_p (src))
372 SCM oldcar =gh_car (src);
374 UGH! breaks on circular lists.
376 SCM newcar = handle_broken_smobs (oldcar, criterion);
377 SCM oldcdr = gh_cdr (src);
379 if (newcar == SCM_UNDEFINED
380 && (gh_pair_p (oldcdr) || oldcdr == SCM_EOL))
383 This is tail-recursion, ie.
385 return handle_broken_smobs (cdr, criterion);
387 We don't want to rely on the compiler to do this. Without
388 tail-recursion, this easily crashes with a stack overflow. */
393 SCM newcdr = handle_broken_smobs (oldcdr, criterion);
394 return gh_cons (newcar, newcdr);
403 Score_element::handle_broken_dependencies()
405 Spanner * s= dynamic_cast<Spanner*> (this);
406 if (original_l_ && s)
411 for (int i = 0; i< s->broken_into_l_arr_ .size (); i++)
413 Score_element * sc = s->broken_into_l_arr_[i];
414 Line_of_score * l = sc->line_l ();
415 s->broken_into_l_arr_[i]->element_property_alist_ =
416 handle_broken_smobs (element_property_alist_,
417 l ? l->self_scm_ : SCM_UNDEFINED);
422 Line_of_score *line = line_l();
424 if (line && common_refpoint (line, X_AXIS) && common_refpoint (line, Y_AXIS))
426 element_property_alist_
427 = handle_broken_smobs (element_property_alist_,
428 line ? line->self_scm_ : SCM_UNDEFINED);
430 else if (dynamic_cast <Line_of_score*> (this))
432 element_property_alist_ = handle_broken_smobs (element_property_alist_,
438 This element is `invalid'; it has been removed from all
439 dependencies, so let's junk the element itself.
441 do not do this for Line_of_score, since that would remove
442 references to the originals of score-elts, which get then GC'd
450 Note that we still want references to this element to be
451 rearranged, and not silently thrown away, so we keep pointers
452 like {broken_into_{drul,array}, original}
455 Score_element::suicide ()
457 element_property_alist_ = SCM_EOL;
458 set_extent_callback (0, Y_AXIS);
459 set_extent_callback (0, X_AXIS);
464 Score_element::handle_prebroken_dependencies()
470 Score_element::linked_b() const
476 Score_element::do_print () const
481 Score_element::find_broken_piece (Line_of_score*) const
487 Score_element::translate_axis (Real y, Axis a)
489 dim_cache_[a]->translate (y);
493 Score_element::relative_coordinate (Score_element const*e, Axis a) const
495 return dim_cache_[a]->relative_coordinate (e ? e->dim_cache_[a] : 0);
499 Score_element::empty_b (Axis a)const
501 return !dim_cache_[a]->extent_callback_l_;
505 Score_element::extent (Axis a) const
507 Dimension_cache const * d = dim_cache_[a];
508 Interval ext = d->get_dim ();
513 SCM extra = get_elt_property (a == X_AXIS ? "extra-extent-X"
519 Real s = paper_l ()->get_var ("staffspace");
520 if (gh_pair_p (extra))
522 ext[BIGGER] += s * gh_scm2double (gh_cdr (extra));
523 ext[SMALLER] += s * gh_scm2double (gh_car (extra));
526 extra = get_elt_property (a == X_AXIS
528 : "minimum-extent-Y");
529 if (gh_pair_p (extra))
531 ext.unite (Interval (s * gh_scm2double (gh_car (extra)),
532 s * gh_scm2double (gh_cdr (extra))));
540 Score_element::parent_l (Axis a) const
542 Dimension_cache*d= dim_cache_[a]->parent_l_;
543 return d ? d->elt_l_ : 0;
547 Score_element::common_refpoint (Score_element const* s, Axis a) const
549 Dimension_cache *dim = dim_cache_[a]->common_refpoint (s->dim_cache_[a]);
550 return dim ? dim->element_l () : 0;
555 Score_element::common_refpoint (SCM elist, Axis a) const
557 Score_element * common = (Score_element*) this;
558 for (; gh_pair_p (elist); elist = gh_cdr (elist))
560 Score_element * s = unsmob_element (gh_car (elist));
562 common = common->common_refpoint (s, a);
569 Score_element::name () const
571 return classname (this);
575 Score_element::add_offset_callback (Offset_cache_callback cb, Axis a)
577 dim_cache_[a]->off_callbacks_.push (cb);
581 Score_element::has_offset_callback_b (Offset_cache_callback cb, Axis a)const
583 for (int i= dim_cache_[a]->off_callbacks_.size (); i--;)
585 if (dim_cache_[a]->off_callbacks_[i] == cb)
592 Score_element::set_extent_callback (Dim_cache_callback dc, Axis a)
594 dim_cache_[a]->extent_callback_l_ = dc ;
599 Score_element::set_parent (Score_element *g, Axis a)
601 dim_cache_[a]->parent_l_ = g ? g->dim_cache_[a]: 0;
605 Score_element::fixup_refpoint ()
607 for (int a = X_AXIS; a < NO_AXES; a ++)
610 Score_element * parent = parent_l (ax);
615 if (parent->line_l () != line_l () && line_l ())
617 Score_element * newparent = parent->find_broken_piece (line_l ());
618 set_parent (newparent, ax);
621 if (Item * i = dynamic_cast<Item*> (this))
623 Item *parenti = dynamic_cast<Item*> (parent);
627 Direction my_dir = i->break_status_dir () ;
628 if (my_dir!= parenti->break_status_dir())
630 Item *newparent = parenti->find_prebroken_piece (my_dir);
631 set_parent (newparent, ax);
640 /****************************************************
642 ****************************************************/
644 #include "ly-smobs.icc"
646 IMPLEMENT_UNSMOB(Score_element, element);
647 IMPLEMENT_SMOBS(Score_element);
650 Score_element::mark_smob (SCM ses)
652 Score_element * s = SMOB_TO_TYPE (Score_element, ses);
653 if (s->self_scm_ != ses)
655 programming_error ("SMOB marking gone awry");
658 return s->element_property_alist_;
662 Score_element::print_smob (SCM s, SCM port, scm_print_state *)
664 Score_element *sc = (Score_element *) gh_cdr (s);
666 scm_puts ("#<Score_element ", port);
667 scm_puts ((char *)sc->name (), port);
670 don't try to print properties, that is too much hassle.
672 scm_puts (" >", port);
677 Score_element::do_smobify_self ()
682 Score_element::equal_p (SCM a, SCM b)
684 return gh_cdr(a) == gh_cdr(b) ? SCM_BOOL_T : SCM_BOOL_F;
689 Score_element::ly_set_elt_property (SCM elt, SCM sym, SCM val)
691 Score_element * sc = unsmob_element (elt);
693 if (!gh_symbol_p (sym))
695 error ("Not a symbol");
696 ly_display_scm (sym);
697 return SCM_UNDEFINED;
702 sc->element_property_alist_ = scm_assoc_set_x (sc->element_property_alist_, sym, val);
706 error ("Not a score element");
707 ly_display_scm (elt);
710 return SCM_UNDEFINED;
715 Score_element::ly_get_elt_property (SCM elt, SCM sym)
717 Score_element * sc = unsmob_element (elt);
721 SCM s = scm_assq(sym, sc->element_property_alist_);
726 return SCM_UNDEFINED;
730 error ("Not a score element");
731 ly_display_scm (elt);
733 return SCM_UNDEFINED;
740 scm_make_gsubr ("ly-get-elt-property", 2, 0, 0, (SCM(*)(...))Score_element::ly_get_elt_property);
741 scm_make_gsubr ("ly-set-elt-property", 3, 0, 0, (SCM(*)(...))Score_element::ly_set_elt_property);
744 ADD_SCM_INIT_FUNC(scoreelt, init_functions);
747 Score_element::do_breakable_col_processing ()