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 "span-bar.hh"
#include "font-interface.hh"
#include "dimensions.hh"
#include "paper-def.hh"
-#include "molecule.hh"
+#include "stencil.hh"
#include "warn.hh"
#include "axis-group-interface.hh"
#include "group-interface.hh"
me->add_dependency (b);
}
-MAKE_SCHEME_CALLBACK (Span_bar,brew_molecule,1);
-
-/**
- * Limitations/Bugs:
- *
- * (1) Elements from 'me->get_grob_property ("elements")' must be
- * ordered according to their y coordinates relative to their common
- * axis group parent. Otherwise, the computation goes mad. (TODO:
- * apply a sort algorithm that ensures this precondition.) However,
- * until now, I have seen no case where lily has not fulfilled this
- * precondition.
- *
- * (2) This method depends on bar_engraver not being removed from
- * staff context. If bar_engraver is removed, the size of the staff
- * lines is evaluated as 0, which results in a solid span bar line
- * with faulty y coordinate.
- */
+MAKE_SCHEME_CALLBACK (Span_bar,print,1);
-/*
- This routine was originally by Juergen Reuter, but it was a on the
- bulky side. Rewritten by Han-Wen.
- */
+/* Limitations/Bugs:
+
+ (1) Elements from 'me->get_grob_property ("elements")' must be
+ ordered according to their y coordinates relative to their common
+ axis group parent. Otherwise, the computation goes mad.
+
+ (TODO:
+ apply a sort algorithm that ensures this precondition.) However,
+ until now, I have seen no case where lily has not fulfilled this
+ precondition.
+
+ (2) This method depends on bar_engraver not being removed from
+ staff context. If bar_engraver is removed, the size of the staff
+ lines is evaluated as 0, which results in a solid span bar line
+ with faulty y coordinate. */
+
+/* This routine was originally by Juergen Reuter, but it was a on the
+ bulky side. Rewritten by Han-Wen. */
SCM
-Span_bar::brew_molecule (SCM smobbed_me)
+Span_bar::print (SCM smobbed_me)
{
Grob *me = unsmob_grob (smobbed_me);
SCM first_elt = me->get_grob_property ("elements");
- // compute common refpoint of elements
+ /* compute common refpoint of elements */
Grob *refp = me;
for (SCM elts = first_elt; gh_pair_p (elts); elts = ly_cdr (elts))
{
refp = staff_bar->common_refpoint (refp, Y_AXIS);
}
- Span_bar::evaluate_glyph(me);
+ Span_bar::evaluate_glyph (me);
SCM glyph = me->get_grob_property ("glyph");
- /*
- glyph may not be a string, when ME is killed by Hara Kiri in
- between.
- */
+ /* glyph may not be a string, when ME is killed by Hara Kiri in
+ between. */
if (!gh_string_p (glyph))
return SCM_EOL;
- String glyph_str = ly_scm2string (glyph);
+ String glyph_string = ly_scm2string (glyph);
- // compose span_bar_mol
- Molecule span_bar_mol;
+ /* compose span_bar_mol */
+ Stencil span_bar_mol;
Interval prev_extent;
for (SCM elts = first_elt; gh_pair_p (elts); elts = ly_cdr (elts))
SCM smobbed_staff_bar = ly_car (elts);
Grob *staff_bar = unsmob_grob (smobbed_staff_bar);
Interval ext = staff_bar->extent (refp, Y_AXIS);
- if (ext.empty_b ())
+ if (ext.is_empty ())
continue;
- if (!prev_extent.empty_b ())
+ if (!prev_extent.is_empty ())
{
- Interval l(prev_extent [UP],
+ Interval l (prev_extent [UP],
ext[DOWN]);
- if (l.empty_b ())
+ if (l.is_empty ())
{
- /* there is overlap between the bar lines. We do nothign here.
- */
+ /* There is overlap between the bar lines. Do nothing. */
}
else
{
- Molecule interbar
- = Bar_line::compound_barline (staff_bar, glyph_str, l.length());
+ Stencil interbar = Bar_line::compound_barline (staff_bar,
+ glyph_string,
+ l.length ());
interbar.translate_axis (l.center (), Y_AXIS);
- span_bar_mol.add_molecule (interbar);
+ span_bar_mol.add_stencil (interbar);
}
}
prev_extent = ext;
}
- span_bar_mol.translate_axis (- me->relative_coordinate (refp, Y_AXIS), Y_AXIS);
+ span_bar_mol.translate_axis (- me->relative_coordinate (refp, Y_AXIS),
+ Y_AXIS);
return span_bar_mol.smobbed_copy ();
}
/*
urg.
*/
- Molecule m = Bar_line::compound_barline (se, gl, 40 PT);
+ Stencil m = Bar_line::compound_barline (se, gl, 40 PT);
return ly_interval2scm (m.extent (X_AXIS));
}
evaluate_empty (unsmob_grob (smob));
evaluate_glyph (unsmob_grob (smob));
- /*
- no need to call Bar_line::before_line_breaking (), because the info
- in ELEMENTS already has been procced by Bar_line::before_line_breaking ().
- */
+ /* No need to call Bar_line::before_line_breaking (), because the info
+ in ELEMENTS already has been procced by
+ Bar_line::before_line_breaking (). */
return SCM_UNSPECIFIED;
}
assert (a == Y_AXIS);
Interval i (get_spanned_interval (me));
- /*
- Bar_line::brew_molecule delivers a barline of y-extent (-h/2,h/2), so
- we have to translate ourselves to be in the center of the
- interval that we span. */
- if (i.empty_b ())
+ /* Bar_line::print delivers a barline of y-extent (-h/2,h/2), so
+ we have to translate ourselves to be in the center of the
+ interval that we span. */
+ if (i.is_empty ())
{
me->suicide ();
return gh_double2scm (0.0);
void
Span_bar::evaluate_empty (Grob*me)
{
- /*
- TODO: filter all hara-kiried out of ELEMENS list, and then
- optionally do suicide. Call this cleanage function from
- center_on_spanned_callback () as well.
-
- */
+ /* TODO: filter all hara-kiried out of ELEMENS list, and then
+ optionally do suicide. Call this cleanage function from
+ center_on_spanned_callback () as well. */
if (!gh_pair_p (me->get_grob_property ("elements")))
{
me->suicide ();
while (gh_pair_p (elts))
{
- gl = unsmob_grob (gh_car (elts))->internal_get_grob_property (glyph_symbol);
+ gl = unsmob_grob (gh_car (elts))
+ ->internal_get_grob_property (glyph_symbol);
if (gh_string_p (gl))
break;
elts =gh_cdr (elts);
type = ".|.";
}
- gl = ly_str02scm (type.ch_C ());
- if (scm_equal_p (me->internal_get_grob_property (glyph_symbol), gl) != SCM_BOOL_T)
+ gl = scm_makfrom0str (type.to_str0 ());
+ if (scm_equal_p (me->internal_get_grob_property (glyph_symbol), gl)
+ != SCM_BOOL_T)
me->internal_set_grob_property (glyph_symbol, gl);
}
Interval
Span_bar::get_spanned_interval (Grob*me)
{
- return ly_scm2interval (Axis_group_interface::group_extent_callback (me->self_scm (), gh_int2scm (Y_AXIS)));
+ return ly_scm2interval (Axis_group_interface::group_extent_callback
+ (me->self_scm (), gh_int2scm (Y_AXIS)));
}
{
Grob* me = unsmob_grob (smob);
Interval iv (get_spanned_interval (me));
- if (iv.empty_b ())
+ if (iv.is_empty ())
{
- /*
- This happens if the bars are hara-kiried from under us.
- */
+ /* This happens if the bars are hara-kiried from under us. */
me->suicide ();
return gh_double2scm (-1);
}
return gh_double2scm (iv.length ());
}
-void
-Span_bar::set_interface (Grob *me)
-{
- Bar_line::set_interface (me);
-
- me->set_interface (ly_symbol2scm ("span-bar-interface"));
- me->set_extent_callback (SCM_EOL, Y_AXIS);
-}
-bool
-Span_bar::has_interface (Grob*m)
-{
- return m && m->has_interface (ly_symbol2scm ("span-bar-interface"));
-}
+
+ADD_INTERFACE (Span_bar,"span-bar-interface",
+ "A bar line that spans other barlines (typically used to get cross-staff barlines.",
+ "");
+
+
projects / lilypond.git / blobdiff