}
MAKE_SCHEME_CALLBACK (Grob,preset_extent,2);
-
SCM
Grob::preset_extent (SCM element_smob, SCM scm_axis)
{
-
-/**
- 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
- {
- System * line
- = dynamic_cast<System*> (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 ()
{
{
Grob * sc = s->broken_into_l_arr_[i];
System * l = sc->line_l ();
+
+ set_break_subsititution (l ? l->self_scm () : SCM_UNDEFINED);
sc->mutable_property_alist_ =
- handle_broken_grobs (mutable_property_alist_,
- l ? l->self_scm () : SCM_UNDEFINED);
+ substitute_mutable_properties (mutable_property_alist_);
+
}
}
if (line && common_refpoint (line, X_AXIS) && common_refpoint (line, Y_AXIS))
{
- mutable_property_alist_
- = handle_broken_grobs (mutable_property_alist_,
- line ? line->self_scm () : SCM_UNDEFINED);
+ set_break_subsititution (line ? line->self_scm () : SCM_UNDEFINED);
+ mutable_property_alist_ = substitute_mutable_properties (mutable_property_alist_);
}
else if (dynamic_cast <System*> (this))
{
- mutable_property_alist_ = handle_broken_grobs (mutable_property_alist_,
- SCM_UNDEFINED);
+ set_break_subsititution (SCM_UNDEFINED);
+ mutable_property_alist_ = substitute_mutable_properties (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 System, since that would remove
- references to the originals of score-grobs, 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 ();
}
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
{
return get_offset (a) + dim_cache_[a].parent_l_->relative_coordinate (refp, a);
}
+
+
+/*
+ Invoke callbacks to get offset relative to parent.
+*/
Real
Grob::get_offset (Axis a) const
{
return ext;
}
+/*
+ Find the group-element which has both #this# and #s#
+*/
Grob *
Grob::common_refpoint (Grob const* s, Axis a) const
{
{
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_)
return SCM_EOL;
}
-LY_DEFINE(ly_set_grob_property,"ly-set-grob-property", 3, 0, 0,
-(SCM grob, SCM sym, SCM val),
-"
-Set @var{sym} in grob @var{grob} to value @var{val}")
-{
- 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");
-
- if (!type_check_assignment (sym, val, ly_symbol2scm ("backend-type?")))
- error ("typecheck failed");
-
- sc->internal_set_grob_property (sym, val);
- return SCM_UNSPECIFIED;
-}
-
-LY_DEFINE(ly_get_grob_property,
- "ly-get-grob-property", 2, 0, 0, (SCM grob, SCM sym),
- " Get the value of a value in grob @var{g} of property @var{sym}. It
-will return @code{'()} (end-of-list) if @var{g} doesn't have @var{sym} set.
-")
-{
- 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");
-
- return sc->internal_get_grob_property (sym);
-}
void
{
}
-
-LY_DEFINE(spanner_get_bound, "ly-get-spanner-bound", 2 , 0, 0,
- (SCM slur, SCM dir),
- "Get one of the bounds of @var{spanner}. @var{dir} may be @code{-1} for
-left, and @code{1} for right.
-")
-{
- 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 ();
-}
-
-LY_DEFINE(ly_get_paper_var,"ly-get-paper-variable", 2, 0, 0,
- (SCM grob, SCM sym),
- "Get a variable from the \\paper block.")
-{
- 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");
-
- return sc->paper_l() ->get_scmvar_scm (sym);
-}
-
-
-
-LY_DEFINE(ly_get_extent, "ly-get-extent", 3, 0, 0,
- (SCM grob, SCM refp, SCM axis),
- "Get the extent in @var{axis} direction of @var{grob} relative to the
-grob @var{refp}")
-{
- Grob * sc = unsmob_grob (grob);
- Grob * ref = unsmob_grob (refp);
- SCM_ASSERT_TYPE(sc, grob, SCM_ARG1, __FUNCTION__, "grob");
- SCM_ASSERT_TYPE(ref, refp, SCM_ARG2, __FUNCTION__, "grob");
-
- SCM_ASSERT_TYPE(ly_axis_p(axis), axis, SCM_ARG3, __FUNCTION__, "axis");
-
- return ly_interval2scm ( sc->extent (ref, Axis (gh_scm2int (axis))));
-}
-
-LY_DEFINE (ly_get_parent, "ly-get-parent", 2, 0, 0, (SCM grob, SCM axis),
- "Get the parent of @var{grob}. @var{axis} can be 0 for the X-axis, 1
-for the Y-axis.")
-{
- Grob * sc = unsmob_grob (grob);
- SCM_ASSERT_TYPE(sc, grob, SCM_ARG1, __FUNCTION__, "grob");
- SCM_ASSERT_TYPE(ly_axis_p(axis), axis, SCM_ARG2, __FUNCTION__, "axis");
-
- return sc->get_parent (Axis (gh_scm2int (axis)))->self_scm();
-}
-
-
bool
Grob::internal_has_interface (SCM k)
{
projects / lilypond.git / blobdiff