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>
*/
/*
fixme: default should be no callback.
*/
-
+ self_scm_ = SCM_EOL;
pscore_=0;
status_ = 0;
original_ = 0;
: dim_cache_ (s.dim_cache_)
{
original_ = (Grob*) &s;
- immutable_property_alist_ = s.immutable_property_alist_;
+ self_scm_ = SCM_EOL;
+ immutable_property_alist_ = s.immutable_property_alist_;
mutable_property_alist_ = SCM_EOL;
/*
*/
status_ = s.status_;
- pscore_ = s.pscore_;
+ pscore_ = 0;
smobify_self ();
}
-
-
-
MAKE_SCHEME_CALLBACK (Grob,molecule_extent,2);
SCM
Grob::molecule_extent (SCM element_smob, SCM scm_axis)
SCM ext = s->get_grob_property ((a == X_AXIS)
? "X-extent"
: "Y-extent");
-
- 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 ());
+
+ if (is_number_pair (ext))
+ return ext;
+ else
+ return ly_interval2scm (Interval());
}
if (!live())
{
return 0;
-
}
SCM mol = get_grob_property ("molecule");
if (unsmob_molecule (mol))
return unsmob_molecule (mol);
- mol = get_uncached_molecule ();
+ mol = get_uncached_molecule ();
- Grob *me = (Grob*)this;
- me->set_grob_property ("molecule", mol);
+ if (live ())
+ {
+ Grob *me = (Grob*)this;
+ me->set_grob_property ("molecule", mol);
+ }
return unsmob_molecule (mol);
}
SCM mol = SCM_EOL;
if (gh_procedure_p (proc))
mol = gh_apply (proc, scm_list_n (this->self_scm (), SCM_UNDEFINED));
-
Molecule *m = unsmob_molecule (mol);
if (sp)
{
+ /*
+ 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_; gh_pair_p(s);
s = gh_cdr(s))
{
sp->substitute_one_mutable_property (gh_caar (s),
gh_cdar (s));
-
}
}
void
Grob::suicide ()
{
+ if (!live ())
+ return;
+
+#if 0 // see below.
+ String nm = name();
+#endif
+
mutable_property_alist_ = SCM_EOL;
immutable_property_alist_ = SCM_EOL;
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
}
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_));
Grob::warning (String s)const
{
SCM cause = self_scm();
- while (cause != SCM_EOL && !unsmob_music (cause))
+ while (Grob * g = unsmob_grob (cause))
{
- Grob * g = unsmob_grob (cause);
cause = g->get_grob_property ("cause");
}
}
SCM
-Grob::do_derived_mark ()
+Grob::do_derived_mark () const
{
return SCM_EOL;
}
}
-IMPLEMENT_TYPE_P (Grob, "ly-grob?");
+IMPLEMENT_TYPE_P (Grob, "ly:grob?");
ADD_INTERFACE (Grob, "grob-interface",
- "In music notation, lots of symbols are related in some way. You can
-think of music notation as a graph where nodes are formed by the
-symbols, and the arcs by their relations. A grob is a node in that
-graph. The directed edges in the graph are formed by references to
-other grobs (i.e. pointers). This big graph of grobs specifies the
-notation problem. The solution of this problem is a description of the
-printout in closed form, i.e. a list of values. These values are
-Molecules.
-
-All grobs have an X and Y-position on the page. These X and Y positions
-are stored in a relative format, so they can easily be combined by
-stacking them, hanging one grob to the side of another, and coupling
-them into a grouping-grob.
-
-Each grob has a reference point (a.k.a. parent): the position of a grob
-is stored relative to that reference point. For example the X-reference
-point of a staccato dot usually is the note head that it applies
-to. When the note head is moved, the staccato dot moves along
-automatically.
-
-A grob is often associated with a symbol, but some grobs do not print
-any symbols. They take care of grouping objects. For example, there is a
-separate grob that stacks staves vertically. The @ref{NoteCollision}
-is also an abstract grob: it only moves around chords, but doesn't print
-anything.
-",
- "X-offset-callbacks Y-offset-callbacks X-extent-callback molecule cause
-Y-extent-callback molecule-callback extra-offset spacing-procedure
-staff-symbol interfaces dependencies X-extent Y-extent extra-X-extent
-causes meta layer before-line-breaking-callback
-after-line-breaking-callback extra-Y-extent minimum-X-extent
-minimum-Y-extent transparent");
+ "In music notation, lots of symbols are related in some way. You can\n"
+"think of music notation as a graph where nodes are formed by the\n"
+"symbols, and the arcs by their relations. A grob is a node in that\n"
+"graph. The directed edges in the graph are formed by references to\n"
+"other grobs (i.e. pointers). This big graph of grobs specifies the\n"
+"notation problem. The solution of this problem is a description of the\n"
+"printout in closed form, i.e. a list of values. These values are\n"
+"Molecules.\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-grob.\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"
+,
+ "X-offset-callbacks Y-offset-callbacks X-extent-callback molecule cause "
+"Y-extent-callback molecule-callback 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 "
+"minimum-Y-extent transparent");
projects / lilypond.git / blobdiff