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 "group-interface.hh"
#include "misc.hh"
#include "paper-score.hh"
-#include "molecule.hh"
+#include "stencil.hh"
#include "grob.hh"
#include "warn.hh"
#include "spanner.hh"
#include "system.hh"
#include "item.hh"
-#include "molecule.hh"
+#include "stencil.hh"
#include "misc.hh"
#include "music.hh"
#include "item.hh"
/*
fixme: default should be no callback.
*/
-
+ self_scm_ = SCM_EOL;
pscore_=0;
status_ = 0;
original_ = 0;
mutable_property_alist_ = SCM_EOL;
/*
- We do smobify_self() as the first step. Since the object lives on
+ 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 (), they are.
*/
smobify_self ();
mutable_property_alist_ = scm_c_make_hash_table (HASH_SIZE);
#endif
- SCM meta = get_grob_property ("meta");
+ SCM meta = get_property ("meta");
if (gh_pair_p (meta))
{
SCM ifs = scm_assoc (ly_symbol2scm ("interfaces"), meta);
*/
bool itc = internal_type_checking_global_b;
internal_type_checking_global_b = false;
- internal_set_grob_property (ly_symbol2scm ("interfaces"), gh_cdr(ifs));
+ internal_set_property (ly_symbol2scm ("interfaces"), gh_cdr (ifs));
internal_type_checking_global_b = itc;
}
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
+ if (is_number_pair (xt))
+ cb = xt;
+ else if (cb != SCM_BOOL_F
&& !gh_procedure_p (cb) && !gh_pair_p (cb)
- && gh_procedure_p (get_grob_property ("molecule-callback"))
- )
- cb = molecule_extent_proc;
+ && gh_procedure_p (get_property ("print-function")))
+ cb = stencil_extent_proc;
dim_cache_[a].dimension_ = cb;
}
: 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);
+MAKE_SCHEME_CALLBACK (Grob,stencil_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);
- 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)
- ? "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 ());
-}
-
-
-
Paper_def*
Grob::get_paper () const
{
status_= busy;
- for (SCM d = get_grob_property ("dependencies"); gh_pair_p (d);
+ for (SCM d = get_property ("dependencies"); gh_pair_p (d);
d = ly_cdr (d))
{
unsmob_grob (ly_car (d))
}
- SCM proc = internal_get_grob_property (funcname);
+ SCM proc = internal_get_property (funcname);
if (gh_procedure_p (proc))
gh_call1 (proc, this->self_scm ());
status_= final;
}
-Molecule *
-Grob::get_molecule () const
+Stencil *
+Grob::get_stencil () const
{
- if (!live())
+ if (!live ())
{
return 0;
-
}
- SCM mol = get_grob_property ("molecule");
- if (unsmob_molecule (mol))
- return unsmob_molecule (mol);
+ 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));
-
- 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");
+ SCM cause = get_property ("cause");
if (Music*m = unsmob_music (cause))
{
- SCM music_origin = m->get_mus_property ("origin");
+ SCM music_origin = m->get_property ("origin");
if (unsmob_input (music_origin))
origin = music_origin;
}
// ugr.
- mol = Molecule (m->extent_box (),
+ mol = Stencil (m->extent_box (),
scm_list_n (origin, m->get_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;
}
if (sp)
{
- for (SCM s = mutable_property_alist_; gh_pair_p(s);
- s = gh_cdr(s))
+ /*
+ 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
}
-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_));
ext = ly_scm2interval (d->dimension_);
- SCM extra = get_grob_property (a == X_AXIS
+ SCM extra = get_property (a == X_AXIS
? "extra-X-extent"
: "extra-Y-extent");
ext[SMALLER] += gh_scm2double (ly_car (extra));
}
- extra = get_grob_property (a == X_AXIS
+ extra = get_property (a == X_AXIS
? "minimum-X-extent"
: "minimum-Y-extent");
if (gh_pair_p (extra))
Grob *
common_refpoint_of_array (Link_array<Grob> const &arr, Grob *common, Axis a)
{
- for (int i = arr.size() ; i--; )
+ for (int i = arr.size () ; i--; )
{
Grob * s = arr[i];
if (!s)
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);
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].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_offset_callback_b (SCM cb, Axis a)const
+Grob::has_offset_callback (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
void
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);
}
SCM
-Grob::do_derived_mark ()
+Grob::do_derived_mark () const
{
return SCM_EOL;
}
bool
Grob::internal_has_interface (SCM k)
{
- SCM ifs = get_grob_property ("interfaces");
+ SCM ifs = get_property ("interfaces");
- return scm_memq (k, ifs) != SCM_BOOL_F;
+ return scm_c_memq (k, ifs) != SCM_BOOL_F;
}
}
-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");
+ "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 "
+ "minimum-Y-extent transparent");
projects / lilypond.git / blobdiff