source file of the GNU LilyPond music typesetter
- (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "main.hh"
#include "input-smob.hh"
-
+#include "warn.hh"
#include "group-interface.hh"
#include "misc.hh"
#include "paper-score.hh"
-#include "paper-def.hh"
-#include "molecule.hh"
+#include "stencil.hh"
#include "grob.hh"
-#include "debug.hh"
+#include "warn.hh"
#include "spanner.hh"
-#include "line-of-score.hh"
+#include "system.hh"
#include "item.hh"
-#include "paper-column.hh"
-#include "molecule.hh"
+#include "stencil.hh"
#include "misc.hh"
-#include "paper-outputter.hh"
#include "music.hh"
#include "item.hh"
subclass.
*/
-
+//#define HASHING_FOR_MUTABLE_PROPS
+#define HASH_SIZE 3
#define INFINITY_MSG "Infinity or NaN encountered"
Grob::Grob (SCM basicprops)
/*
fixme: default should be no callback.
*/
-
- pscore_l_=0;
- status_c_ = 0;
- original_l_ = 0;
+ self_scm_ = SCM_EOL;
+ pscore_=0;
+ status_ = 0;
+ original_ = 0;
immutable_property_alist_ = basicprops;
mutable_property_alist_ = SCM_EOL;
+ /*
+ We do smobify_self () as the first step. Since the object lives on
+ the heap, none of its SCM variables are protected from GC. After
+ smobify_self (), they are.
+ */
smobify_self ();
+
+#ifdef HASHING_FOR_MUTABLE_PROPS
+ mutable_property_alist_ = scm_c_make_hash_table (HASH_SIZE);
+#endif
+
+ SCM meta = get_property ("meta");
+ if (ly_c_pair_p (meta))
+ {
+ SCM ifs = scm_assoc (ly_symbol2scm ("interfaces"), meta);
+
+ /*
+ Switch off interface checks for the moment.
+ */
+ bool itc = internal_type_checking_global_b;
+ internal_type_checking_global_b = false;
+ internal_set_property (ly_symbol2scm ("interfaces"), ly_cdr (ifs));
+ internal_type_checking_global_b = itc;
+ }
+
/*
TODO:
eg. when using \override with StaffSymbol. */
char const*onames[] = {"X-offset-callbacks", "Y-offset-callbacks"};
+ char const*xnames[] = {"X-extent", "Y-extent"};
char const*enames[] = {"X-extent-callback", "Y-extent-callback"};
for (int a = X_AXIS; a <= Y_AXIS; a++)
{
- SCM l = get_grob_property (onames[a]);
+ SCM l = get_property (onames[a]);
if (scm_ilength (l) >=0)
{
programming_error ("[XY]-offset-callbacks must be a list");
}
- SCM cb = get_grob_property (enames[a]);
-
+ SCM cb = get_property (enames[a]);
+ SCM xt = get_property (xnames[a]);
+
/*
- Should change default to be empty?
+ Should change default to empty?
*/
- if (cb != SCM_BOOL_F && !gh_procedure_p (cb) && !gh_pair_p (cb))
- cb = molecule_extent_proc;
+ if (is_number_pair (xt))
+ cb = xt;
+ else if (cb != SCM_BOOL_F
+ && !ly_c_procedure_p (cb) && !ly_c_pair_p (cb)
+ && ly_c_procedure_p (get_property ("print-function")))
+ cb = stencil_extent_proc;
dim_cache_[a].dimension_ = cb;
}
- SCM meta = get_grob_property ("meta");
- if (gh_pair_p (meta))
- {
- SCM ifs = scm_assoc (ly_symbol2scm ("interfaces"), meta);
-
- set_grob_property ("interfaces",ly_cdr (ifs));
- }
}
Grob::Grob (Grob const&s)
: dim_cache_ (s.dim_cache_)
{
- original_l_ = (Grob*) &s;
+ original_ = (Grob*) &s;
+ self_scm_ = SCM_EOL;
+
immutable_property_alist_ = s.immutable_property_alist_;
mutable_property_alist_ = SCM_EOL;
- status_c_ = s.status_c_;
- pscore_l_ = s.pscore_l_;
+ /*
+ No properties are copied. That is the job of handle_broken_dependencies.
+ */
+
+ status_ = s.status_;
+ pscore_ = 0;
smobify_self ();
+
+#ifdef HASHING_FOR_MUTABLE_PROPS
+ mutable_property_alist_ = scm_c_make_hash_table (HASH_SIZE);
+#endif
}
Grob::~Grob ()
}
+MAKE_SCHEME_CALLBACK (Grob,stencil_extent,2);
SCM
-Grob::internal_get_grob_property (SCM sym) const
-{
- SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
- if (s != SCM_BOOL_F)
- return ly_cdr (s);
-
- s = scm_sloppy_assq (sym, immutable_property_alist_);
- return (s == SCM_BOOL_F) ? SCM_EOL : ly_cdr (s);
-}
-
-/*
- Remove the value associated with KEY, and return it. The result is
- that a next call will yield SCM_EOL (and not the underlying
- `basic' property.
-*/
-SCM
-Grob::remove_grob_property (const char* key)
-{
- SCM val = get_grob_property (key);
- if (val != SCM_EOL)
- set_grob_property (key, SCM_EOL);
- return val;
-}
-
-
-#if 0
-/*
- Puts the k, v in the immutable_property_alist_, which is convenient for
- storing variables that are needed during the breaking process. (eg.
- Line_of_score::rank : int)
- */
-void
-Grob::set_immutable_grob_property (const char*k, SCM v)
-{
- SCM s = ly_symbol2scm (k);
- set_immutable_grob_property (s, v);
-}
-
-void
-Grob::set_immutable_grob_property (SCM s, SCM v)
-{
- immutable_property_alist_ = gh_cons (gh_cons (s,v), mutable_property_alist_);
- mutable_property_alist_ = scm_assq_remove_x (mutable_property_alist_, s);
-}
-#endif
-
-void
-Grob::internal_set_grob_property (SCM s, SCM v)
-{
-#ifndef NDEBUG
- if (internal_type_checking_global_b)
- assert (type_check_assignment (s, v, ly_symbol2scm ("backend-type?")));
-#endif
-
-
- mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, s, v);
-}
-
-
-MAKE_SCHEME_CALLBACK (Grob,molecule_extent,2);
-SCM
-Grob::molecule_extent (SCM element_smob, SCM scm_axis)
+Grob::stencil_extent (SCM element_smob, SCM scm_axis)
{
Grob *s = unsmob_grob (element_smob);
- Axis a = (Axis) gh_scm2int (scm_axis);
+ Axis a = (Axis) ly_scm2int (scm_axis);
- Molecule *m = s->get_molecule ();
+ Stencil *m = s->get_stencil ();
Interval e ;
if (m)
e = m->extent (a);
return ly_interval2scm (e);
}
-MAKE_SCHEME_CALLBACK (Grob,preset_extent,2);
-
-SCM
-Grob::preset_extent (SCM element_smob, SCM scm_axis)
-{
- Grob *s = unsmob_grob (element_smob);
- Axis a = (Axis) gh_scm2int (scm_axis);
-
- SCM ext = s->get_grob_property ((a == X_AXIS)
- ? "extent-X"
- : "extent-Y");
-
- if (gh_pair_p (ext))
- {
- Real l = gh_scm2double (ly_car (ext));
- Real r = gh_scm2double (ly_cdr (ext));
- return ly_interval2scm (Interval (l, r));
- }
-
- return ly_interval2scm (Interval ());
-}
-
-
-
Paper_def*
-Grob::paper_l () const
+Grob::get_paper () const
{
- return pscore_l_ ? pscore_l_->paper_l_ : 0;
+ return pscore_ ? pscore_->paper_ : 0;
}
void
Grob::calculate_dependencies (int final, int busy, SCM funcname)
{
- if (status_c_ >= final)
+ if (status_ >= final)
return;
- if (status_c_== busy)
+ if (status_== busy)
{
programming_error ("Element is busy, come back later");
return;
}
- status_c_= busy;
+ status_= busy;
- for (SCM d= get_grob_property ("dependencies"); gh_pair_p (d); d = ly_cdr (d))
+ for (SCM d = get_property ("dependencies"); ly_c_pair_p (d);
+ d = ly_cdr (d))
{
unsmob_grob (ly_car (d))
->calculate_dependencies (final, busy, funcname);
}
- // ughugh.
- String s = ly_symbol2string (funcname);
- SCM proc = get_grob_property (s.ch_C ());
- if (gh_procedure_p (proc))
- gh_call1 (proc, this->self_scm ());
- status_c_= final;
-
+ SCM proc = internal_get_property (funcname);
+ if (ly_c_procedure_p (proc))
+ scm_call_1 (proc, this->self_scm ());
+
+ status_= final;
}
-Molecule *
-Grob::get_molecule () const
+Stencil *
+Grob::get_stencil () const
{
- SCM mol = get_grob_property ("molecule");
- if (unsmob_molecule (mol))
- return unsmob_molecule (mol);
+ if (!live ())
+ {
+ return 0;
+ }
+
+ SCM mol = get_property ("stencil");
+ if (unsmob_stencil (mol))
+ return unsmob_stencil (mol);
- mol = get_uncached_molecule ();
+ mol = get_uncached_stencil ();
- Grob *me = (Grob*)this;
- me->set_grob_property ("molecule", mol);
+ if (live ())
+ {
+ Grob *me = (Grob*)this;
+ me->set_property ("stencil", mol);
+ }
- return unsmob_molecule (mol);
+ return unsmob_stencil (mol);
}
+
SCM
-Grob::get_uncached_molecule ()const
+Grob::get_uncached_stencil ()const
{
- SCM proc = get_grob_property ("molecule-callback");
+ SCM proc = get_property ("print-function");
SCM mol = SCM_EOL;
- if (gh_procedure_p (proc))
- mol = gh_apply (proc, scm_list_n (this->self_scm (), SCM_UNDEFINED));
-
+ if (ly_c_procedure_p (proc))
+ mol = scm_apply_0 (proc, scm_list_n (this->self_scm (), SCM_UNDEFINED));
- Molecule *m = unsmob_molecule (mol);
+ Stencil *m = unsmob_stencil (mol);
- if (unsmob_molecule (mol))
+ if (unsmob_stencil (mol))
{
SCM origin = ly_symbol2scm ("no-origin");
- if (store_locations_global_b){
- SCM cause = get_grob_property ("cause");
- if (Music*m = unsmob_music (cause))
- {
- SCM music_origin = m->get_mus_property ("origin");
- if (unsmob_input (music_origin))
- origin = music_origin;
- }
+ if (store_locations_global_b)
+ {
+ SCM cause = get_property ("cause");
+ if (Music*m = unsmob_music (cause))
+ {
+ SCM music_origin = m->get_property ("origin");
+ if (unsmob_input (music_origin))
+ origin = music_origin;
+ }
}
// ugr.
- mol = Molecule (m->extent_box (),
- scm_list_n (origin, m->get_expr (), SCM_UNDEFINED)
+ mol = Stencil (m->extent_box (),
+ scm_list_n (origin, m->expr (), SCM_UNDEFINED)
). smobbed_copy ();
- m = unsmob_molecule (mol);
+ m = unsmob_stencil (mol);
}
/*
transparent retains dimensions of element.
*/
- if (m && to_boolean (get_grob_property ("transparent")))
- mol = Molecule (m->extent_box (), SCM_EOL).smobbed_copy ();
+ if (m && to_boolean (get_property ("transparent")))
+ mol = Stencil (m->extent_box (), SCM_EOL).smobbed_copy ();
return mol;
}
{
}
-
-
-
-
-
-Line_of_score *
-Grob::line_l () const
+System *
+Grob::get_system () const
{
return 0;
}
}
-
-
-/**
- Do break substitution in S, using CRITERION. Return new value.
- CRITERION is either a SMOB pointer to the desired line, or a number
- representing the break direction. Do not modify SRC.
-
- It is rather tightly coded, since it takes a lot of time; it is
- one of the top functions in the profile.
-
-*/
-SCM
-Grob::handle_broken_grobs (SCM src, SCM criterion)
-{
- again:
- Grob *sc = unsmob_grob (src);
- if (sc)
- {
- if (SCM_INUMP (criterion))
- {
- Item * i = dynamic_cast<Item*> (sc);
- Direction d = to_dir (criterion);
- if (i && i->break_status_dir () != d)
- {
- Item *br = i->find_prebroken_piece (d);
- return (br) ? br->self_scm () : SCM_UNDEFINED;
- }
- }
- else
- {
- Line_of_score * line
- = dynamic_cast<Line_of_score*> (unsmob_grob (criterion));
- if (sc->line_l () != line)
- {
- sc = sc->find_broken_piece (line);
-
- }
-
- /* now: !sc || (sc && sc->line_l () == line) */
- if (!sc)
- return SCM_UNDEFINED;
-
- /* now: sc && sc->line_l () == line */
- if (!line)
- return sc->self_scm();
- /*
- This was introduced in 1.3.49 as a measure to prevent
- programming errors. It looks expensive (?). TODO:
- benchmark , document when (what kind of programming
- errors) this happens.
- */
- if (sc->common_refpoint (line, X_AXIS)
- && sc->common_refpoint (line, Y_AXIS))
- {
- return sc->self_scm ();
- }
- return SCM_UNDEFINED;
- }
- }
- else if (ly_pair_p (src)) // SCM_CONSP (src)) // huh?
- {
- SCM oldcar =ly_car (src);
- /*
- UGH! breaks on circular lists.
- */
- SCM newcar = handle_broken_grobs (oldcar, criterion);
- SCM oldcdr = ly_cdr (src);
-
- if (newcar == SCM_UNDEFINED
- && (gh_pair_p (oldcdr) || oldcdr == SCM_EOL))
- {
- /*
- This is tail-recursion, ie.
-
- return handle_broken_grobs (cdr, criterion);
-
- We don't want to rely on the compiler to do this. Without
- tail-recursion, this easily crashes with a stack overflow. */
- src = oldcdr;
- goto again;
- }
-
- SCM newcdr = handle_broken_grobs (oldcdr, criterion);
- return scm_cons (newcar, newcdr);
- }
- else
- return src;
-
- return src;
-}
-
void
Grob::handle_broken_dependencies ()
{
- Spanner * s= dynamic_cast<Spanner*> (this);
- if (original_l_ && s)
+ Spanner * sp = dynamic_cast<Spanner*> (this);
+ if (original_ && sp)
return;
- if (s)
+ if (sp)
{
- for (int i = 0; i< s->broken_into_l_arr_ .size (); i++)
+ /*
+ This is the original spanner. We use a special function
+ because some Spanners have enormously long lists in their
+ properties.
+ */
+ for (SCM s = mutable_property_alist_; ly_c_pair_p (s);
+ s = ly_cdr (s))
{
- Grob * sc = s->broken_into_l_arr_[i];
- Line_of_score * l = sc->line_l ();
- sc->mutable_property_alist_ =
- handle_broken_grobs (mutable_property_alist_,
- l ? l->self_scm () : SCM_UNDEFINED);
+ sp->substitute_one_mutable_property (ly_caar (s),
+ ly_cdar (s));
}
}
+ System *system = get_system ();
- Line_of_score *line = line_l ();
-
- if (line && common_refpoint (line, X_AXIS) && common_refpoint (line, Y_AXIS))
+ if (live ()
+ && system && common_refpoint (system, X_AXIS) && common_refpoint (system, Y_AXIS))
{
- mutable_property_alist_
- = handle_broken_grobs (mutable_property_alist_,
- line ? line->self_scm () : SCM_UNDEFINED);
+ substitute_mutable_properties (system ? system->self_scm () : SCM_UNDEFINED,
+ mutable_property_alist_);
}
- else if (dynamic_cast <Line_of_score*> (this))
+ else if (dynamic_cast <System*> (this))
{
- mutable_property_alist_ = handle_broken_grobs (mutable_property_alist_,
- SCM_UNDEFINED);
+ substitute_mutable_properties (SCM_UNDEFINED, mutable_property_alist_);
}
else
{
This element is `invalid'; it has been removed from all
dependencies, so let's junk the element itself.
- do not do this for Line_of_score, since that would remove
- references to the originals of score-elts, which get then GC'd
- (a bad thing.)
+ do not do this for System, since that would remove references
+ to the originals of score-grobs, which get then GC'd (a bad
+ thing.)
+
*/
suicide ();
}
void
Grob::suicide ()
{
+ if (!live ())
+ return;
+
+#if 0 // see below.
+ String nm = name ();
+#endif
+
mutable_property_alist_ = SCM_EOL;
immutable_property_alist_ = SCM_EOL;
- set_extent_callback (SCM_EOL, Y_AXIS);
- set_extent_callback (SCM_EOL, X_AXIS);
+ set_extent (SCM_EOL, Y_AXIS);
+ set_extent (SCM_EOL, X_AXIS);
for (int a= X_AXIS; a <= Y_AXIS; a++)
{
dim_cache_[a].offset_callbacks_ = SCM_EOL;
dim_cache_[a].offsets_left_ = 0;
}
+
+#if 0
+ /*
+ This can make debugging a little easier: we can still know what
+ the object used to be. However, since all its links have been
+ broken, it's usually more convenient to set a conditional
+ breakpoint in GDB before the property lists are wiped.
+ */
+ mutable_property_alist_ = scm_acons (ly_symbol2scm ("name"),
+ scm_makfrom0str (nm.to_str0()),
+ mutable_property_alist_
+ );
+#endif
}
void
Grob::handle_prebroken_dependencies ()
{
+ /*
+ Don't do this in the derived method, since we want to keep access to
+ mutable_property_alist_ centralized.
+ */
+ if (original_)
+ {
+ Item * it = dynamic_cast<Item*> (this);
+ substitute_mutable_properties (scm_int2num (it->break_status_dir ()),
+ original_->mutable_property_alist_);
+ }
}
Grob*
-Grob::find_broken_piece (Line_of_score*) const
+Grob::find_broken_piece (System*) const
{
return 0;
}
+/*
+ translate in one direction
+*/
void
Grob::translate_axis (Real y, Axis a)
{
}
}
+
+/*
+ Find the offset relative to D. If D equals THIS, then it is 0.
+ Otherwise, it recursively defd as
+
+ OFFSET_ + PARENT_L_->relative_coordinate (D)
+*/
Real
Grob::relative_coordinate (Grob const*refp, Axis a) const
{
not ask for the absolute coordinate (ie. REFP == nil.)
*/
- if (refp == dim_cache_[a].parent_l_)
+ if (refp == dim_cache_[a].parent_)
return get_offset (a);
else
- return get_offset (a) + dim_cache_[a].parent_l_->relative_coordinate (refp, a);
+ return get_offset (a) + dim_cache_[a].parent_->relative_coordinate (refp, a);
}
+
+
+/*
+ Invoke callbacks to get offset relative to parent.
+*/
Real
Grob::get_offset (Axis a) const
{
while (dim_cache_[a].offsets_left_)
{
int l = --me->dim_cache_[a].offsets_left_;
- SCM cb = scm_list_ref (dim_cache_[a].offset_callbacks_, gh_int2scm (l));
- SCM retval = gh_call2 (cb, self_scm (), gh_int2scm (a));
+ SCM cb = scm_list_ref (dim_cache_[a].offset_callbacks_, scm_int2num (l));
+ SCM retval = scm_call_2 (cb, self_scm (), scm_int2num (a));
- Real r = gh_scm2double (retval);
+ Real r = ly_scm2double (retval);
if (isinf (r) || isnan (r))
{
programming_error (INFINITY_MSG);
}
-MAKE_SCHEME_CALLBACK (Grob,point_dimension_callback,2);
-SCM
-Grob::point_dimension_callback (SCM , SCM)
-{
- return ly_interval2scm (Interval (0,0));
-}
-
bool
-Grob::empty_b (Axis a)const
+Grob::is_empty (Axis a)const
{
- return ! (gh_pair_p (dim_cache_[a].dimension_) ||
- gh_procedure_p (dim_cache_[a].dimension_));
+ return ! (ly_c_pair_p (dim_cache_[a].dimension_) ||
+ ly_c_procedure_p (dim_cache_[a].dimension_));
}
-/*
- TODO: add
-
- Grob *refpoint
-
- to arguments?
- */
Interval
Grob::extent (Grob * refp, Axis a) const
{
Dimension_cache * d = (Dimension_cache *)&dim_cache_[a];
Interval ext ;
- if (gh_pair_p (d->dimension_))
+ if (ly_c_pair_p (d->dimension_))
;
- else if (gh_procedure_p (d->dimension_))
+ else if (ly_c_procedure_p (d->dimension_))
{
/*
FIXME: add doco on types, and should typecheck maybe?
*/
- d->dimension_= gh_call2 (d->dimension_, self_scm (), gh_int2scm (a));
+ d->dimension_= scm_call_2 (d->dimension_, self_scm (), scm_int2num (a));
}
else
return ext;
- if (!gh_pair_p (d->dimension_))
+ if (!ly_c_pair_p (d->dimension_))
return ext;
ext = ly_scm2interval (d->dimension_);
- SCM extra = get_grob_property (a == X_AXIS
- ? "extra-extent-X"
- : "extra-extent-Y");
+ SCM extra = get_property (a == X_AXIS
+ ? "extra-X-extent"
+ : "extra-Y-extent");
/*
signs ?
*/
- if (gh_pair_p (extra))
+ if (ly_c_pair_p (extra))
{
- ext[BIGGER] += gh_scm2double (ly_cdr (extra));
- ext[SMALLER] += gh_scm2double (ly_car (extra));
+ ext[BIGGER] += ly_scm2double (ly_cdr (extra));
+ ext[SMALLER] += ly_scm2double (ly_car (extra));
}
- extra = get_grob_property (a == X_AXIS
- ? "minimum-extent-X"
- : "minimum-extent-Y");
- if (gh_pair_p (extra))
+ extra = get_property (a == X_AXIS
+ ? "minimum-X-extent"
+ : "minimum-Y-extent");
+ if (ly_c_pair_p (extra))
{
- ext.unite (Interval (gh_scm2double (ly_car (extra)),
- gh_scm2double (ly_cdr (extra))));
+ ext.unite (Interval (ly_scm2double (ly_car (extra)),
+ ly_scm2double (ly_cdr (extra))));
}
ext.translate (x);
return ext;
}
+/*
+ Find the group-element which has both #this# and #s#
+*/
Grob *
Grob::common_refpoint (Grob const* s, Axis a) const
{
I don't like the quadratic aspect of this code, but I see no other
way. The largest chain of parents might be 10 high or so, so
it shouldn't be a real issue. */
- for (Grob const *c = this; c; c = c->dim_cache_[a].parent_l_)
- for (Grob const * d = s; d; d = d->dim_cache_[a].parent_l_)
+ for (Grob const *c = this; c; c = c->dim_cache_[a].parent_)
+ for (Grob const * d = s; d; d = d->dim_cache_[a].parent_)
if (d == c)
return (Grob*)d;
Grob *
-Grob::common_refpoint (SCM elist, Axis a) const
+common_refpoint_of_list (SCM elist, Grob *common, Axis a)
{
- Grob * common = (Grob*) this;
- for (; gh_pair_p (elist); elist = ly_cdr (elist))
+ for (; ly_c_pair_p (elist); elist = ly_cdr (elist))
{
Grob * s = unsmob_grob (ly_car (elist));
- if (s)
+ if (!s)
+ continue;
+ if (common)
common = common->common_refpoint (s, a);
+ else
+ common = s;
+ }
+
+ return common;
+}
+
+
+
+Grob *
+common_refpoint_of_array (Link_array<Grob> const &arr, Grob *common, Axis a)
+{
+ for (int i = arr.size () ; i--; )
+ {
+ Grob * s = arr[i];
+ if (!s)
+ continue;
+
+ if (common)
+ common = common->common_refpoint (s, a);
+ else
+ common = s;
}
return common;
String
Grob::name () const
{
- SCM meta = get_grob_property ("meta");
+ SCM meta = get_property ("meta");
SCM nm = scm_assoc (ly_symbol2scm ("name"), meta);
- nm = (gh_pair_p (nm)) ? ly_cdr (nm) : SCM_EOL;
- return gh_symbol_p (nm) ? ly_symbol2string (nm) : classname (this);
+ nm = (ly_c_pair_p (nm)) ? ly_cdr (nm) : SCM_EOL;
+ return ly_c_symbol_p (nm) ? ly_symbol2string (nm) : classname (this);
}
void
Grob::add_offset_callback (SCM cb, Axis a)
{
- if (!has_offset_callback_b (cb, a))
+ if (!has_offset_callback (cb, a))
{
- dim_cache_[a].offset_callbacks_ = gh_cons (cb, dim_cache_[a].offset_callbacks_);
+ dim_cache_[a].offset_callbacks_ = scm_cons (cb, dim_cache_[a].offset_callbacks_);
dim_cache_[a].offsets_left_ ++;
}
}
bool
-Grob::has_extent_callback_b (SCM cb, Axis a)const
+Grob::has_extent_callback (SCM cb, Axis a)const
{
return scm_equal_p (cb, dim_cache_[a].dimension_) == SCM_BOOL_T;
}
bool
-Grob::has_extent_callback_b (Axis a) const
+Grob::has_offset_callback (SCM cb, Axis a)const
{
- return gh_procedure_p (dim_cache_[a].dimension_);
-}
-
-bool
-Grob::has_offset_callback_b (SCM cb, Axis a)const
-{
- return scm_memq (cb, dim_cache_[a].offset_callbacks_) != SCM_BOOL_F;
+ return scm_c_memq (cb, dim_cache_[a].offset_callbacks_) != SCM_BOOL_F;
}
void
-Grob::set_extent_callback (SCM dc, Axis a)
+Grob::set_extent (SCM dc, Axis a)
{
dim_cache_[a].dimension_ =dc;
}
void
Grob::set_parent (Grob *g, Axis a)
{
- dim_cache_[a].parent_l_ = g;
+ dim_cache_[a].parent_ = g;
}
MAKE_SCHEME_CALLBACK (Grob,fixup_refpoint,1);
if (!parent)
continue;
- if (parent->line_l () != me->line_l () && me->line_l ())
+ if (parent->get_system () != me->get_system () && me->get_system ())
{
- Grob * newparent = parent->find_broken_piece (me->line_l ());
+ Grob * newparent = parent->find_broken_piece (me->get_system ());
me->set_parent (newparent, ax);
}
}
void
-Grob::warning (String s)
+Grob::warning (String s)const
{
- SCM cause = self_scm();
- while (cause != SCM_EOL && !unsmob_music (cause))
+ SCM cause = self_scm ();
+ while (Grob * g = unsmob_grob (cause))
{
- Grob * g = unsmob_grob (cause);
- cause = g->get_grob_property ("cause");
+ cause = g->get_property ("cause");
}
if (Music *m = unsmob_music (cause))
{
- m->origin()->warning (s);
+ m->origin ()->warning (s);
}
else
::warning (s);
-
+}
+
+void
+Grob::programming_error (String s)const
+{
+ s = "Programming error: " + s;
+ warning (s);
}
{
Grob * s = (Grob*) SCM_CELL_WORD_1 (ses);
scm_gc_mark (s->immutable_property_alist_);
- scm_gc_mark (s->mutable_property_alist_);
for (int a =0 ; a < 2; a++)
{
scm_gc_mark (s->dim_cache_[a].offset_callbacks_);
scm_gc_mark (s->dim_cache_[a].dimension_);
- Grob *p = s->get_parent (Y_AXIS);
- if (p)
- scm_gc_mark (p->self_scm ());
+
+ /*
+ don't mark the parents. The pointers in the mutable property
+ list form two tree like structures (one for X relations, one
+ for Y relations). Marking these can be done in limited stack
+ space. If we add the parents, we will jump between X and Y in
+ an erratic manner, leading to much more recursion depth (and
+ core dumps if we link to pthreads.)
+ */
}
- if (s->original_l_)
- scm_gc_mark (s->original_l_->self_scm ());
+ if (s->original_)
+ scm_gc_mark (s->original_->self_scm ());
- return s->do_derived_mark ();
+ s->do_derived_mark ();
+ return s->mutable_property_alist_;
}
int
Grob *sc = (Grob *) ly_cdr (s);
scm_puts ("#<Grob ", port);
- scm_puts ((char *)sc->name ().ch_C (), port);
+ scm_puts ((char *)sc->name ().to_str0 (), port);
/*
don't try to print properties, that is too much hassle.
}
SCM
-Grob::do_derived_mark ()
+Grob::do_derived_mark () const
{
return SCM_EOL;
}
-SCM
-ly_set_grob_property (SCM elt, SCM sym, SCM val)
-{
- Grob * sc = unsmob_grob (elt);
- SCM_ASSERT_TYPE(sc, elt, SCM_ARG1, __FUNCTION__, "grob");
- SCM_ASSERT_TYPE(gh_symbol_p(sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
-
- if (!type_check_assignment (sym, val, ly_symbol2scm ("backend-type?")))
- error ("typecheck failed");
-
- sc->internal_set_grob_property (sym, val);
- return SCM_UNSPECIFIED;
-}
-
-
-SCM
-ly_get_grob_property (SCM elt, SCM sym)
-{
- Grob * sc = unsmob_grob (elt);
- SCM_ASSERT_TYPE(sc, elt, SCM_ARG1, __FUNCTION__, "grob");
- SCM_ASSERT_TYPE(gh_symbol_p(sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
-
- return sc->internal_get_grob_property (sym);
-}
-
void
Grob::discretionary_processing ()
{
}
-
-
-SCM
-spanner_get_bound (SCM slur, SCM dir)
-{
- Spanner * sl = dynamic_cast<Spanner*> (unsmob_grob (slur));
- SCM_ASSERT_TYPE(sl, slur, SCM_ARG1, __FUNCTION__, "spanner grob");
- SCM_ASSERT_TYPE(ly_dir_p (dir), slur, SCM_ARG2, __FUNCTION__, "dir");
- return sl->get_bound (to_dir (dir))->self_scm ();
-}
-
-SCM
-ly_get_paper_var (SCM grob, SCM sym)
+bool
+Grob::internal_has_interface (SCM k)
{
- Grob * sc = unsmob_grob (grob);
- SCM_ASSERT_TYPE(sc, grob, SCM_ARG1, __FUNCTION__, "grob");
- SCM_ASSERT_TYPE(gh_symbol_p(sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
+ SCM ifs = get_property ("interfaces");
- return sc->paper_l() ->get_scmvar_scm (sym);
+ return scm_c_memq (k, ifs) != SCM_BOOL_F;
}
-
-static void
-init_functions ()
+/** Return Array of Grobs in SCM list L */
+Link_array<Grob>
+ly_scm2grobs (SCM l)
{
- scm_c_define_gsubr ("ly-get-grob-property", 2, 0, 0,
- (Scheme_function_unknown)ly_get_grob_property);
- scm_c_define_gsubr ("ly-set-grob-property", 3, 0, 0,
- (Scheme_function_unknown)ly_set_grob_property);
- scm_c_define_gsubr ("ly-get-spanner-bound", 2 , 0, 0,
- (Scheme_function_unknown) spanner_get_bound);
- scm_c_define_gsubr ("ly-get-paper-variable", 2 , 0, 0,
- (Scheme_function_unknown) ly_get_paper_var);
-}
-
-bool
-Grob::has_interface (SCM k)
-{
- SCM ifs = get_grob_property ("interfaces");
-
- return scm_memq (k, ifs) != SCM_BOOL_F;
-}
+ Link_array<Grob> arr;
-void
-Grob::set_interface (SCM k)
-{
- if (has_interface (k))
- return ;
- else
+ for (SCM s = l; ly_c_pair_p (s); s = ly_cdr (s))
{
- set_grob_property ("interfaces",
- gh_cons (k, get_grob_property ("interfaces")));
+ SCM e = ly_car (s);
+ arr.push (unsmob_grob (e));
}
+
+ arr.reverse ();
+ return arr;
}
+/** Return SCM list of Grob array A */
+SCM
+ly_grobs2scm (Link_array<Grob> a)
+{
+ SCM s = SCM_EOL;
+ for (int i = a.size (); i; i--)
+ s = scm_cons (a[i-1]->self_scm (), s);
+
+ return s;
+}
+
+
+IMPLEMENT_TYPE_P (Grob, "ly:grob?");
+
+ADD_INTERFACE (Grob, "grob-interface",
+ "A grob represents a piece of music notation\n"
+ "\n"
+"All grobs have an X and Y-position on the page. These X and Y positions\n"
+"are stored in a relative format, so they can easily be combined by\n"
+"stacking them, hanging one grob to the side of another, and coupling\n"
+"them into a grouping objects.\n"
+"\n"
+"Each grob has a reference point (a.k.a. parent): the position of a grob\n"
+"is stored relative to that reference point. For example the X-reference\n"
+"point of a staccato dot usually is the note head that it applies\n"
+"to. When the note head is moved, the staccato dot moves along\n"
+"automatically.\n"
+"\n"
+"A grob is often associated with a symbol, but some grobs do not print\n"
+"any symbols. They take care of grouping objects. For example, there is a\n"
+"separate grob that stacks staves vertically. The @ref{NoteCollision}\n"
+"is also an abstract grob: it only moves around chords, but doesn't print\n"
+"anything.\n"
+"\n"
+ "Grobs have a properties: Scheme variables, that can be read and set. "
+ "They have two types. Immutable variables "
+ "define the default style and behavior. They are shared between many objects. "
+ "They can be changed using @code{\\override} and @code{\\revert}. "
+ "\n\n"
+ "Mutable properties are variables that are specific to one grob. Typically, "
+ "lists of other objects, or results from computations are stored in"
+ "mutable properties: every call to set-grob-property (or its C++ equivalent) "
+ "sets a mutable property. "
+
+,
+ "X-offset-callbacks Y-offset-callbacks X-extent-callback stencil cause "
+ "Y-extent-callback print-function extra-offset spacing-procedure "
+ "staff-symbol interfaces dependencies X-extent Y-extent extra-X-extent "
+ "meta layer before-line-breaking-callback "
+ "after-line-breaking-callback extra-Y-extent minimum-X-extent "
+ // FIXME: page-penalty?
+ "minimum-Y-extent page-penalty transparent "
+ );
+
-ADD_SCM_INIT_FUNC (scoreelt, init_functions);
-IMPLEMENT_TYPE_P (Grob, "ly-grob?");
projects / lilypond.git / blobdiff