(c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "dimension-cache.hh"
+
#include "span-bar.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
#include "dimensions.hh"
#include "paper-def.hh"
#include "molecule.hh"
#include "warn.hh"
#include "axis-group-interface.hh"
#include "group-interface.hh"
+#include "grob.hh"
+#include "bar.hh"
void
-Span_bar::add_bar (Score_element*b)
+Span_bar::add_bar (Grob*me, Grob*b)
{
- Group_interface gi (this);
- gi.add_element (b);
+ Pointer_group_interface::add_element (me,"elements", b);
- add_dependency (b);
+ me->add_dependency (b);
}
-
-Interval
-Span_bar::width_callback (Dimension_cache const * c)
+MAKE_SCHEME_CALLBACK(Span_bar,width_callback,2);
+SCM
+Span_bar::width_callback (SCM element_smob, SCM scm_axis)
{
- Span_bar* s= dynamic_cast<Span_bar*> (c->element_l ());
- String gl = ly_scm2string (s->get_elt_property ("glyph"));
+ Grob *se = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (scm_axis);
+ assert (a == X_AXIS);
+ String gl = ly_scm2string (se->get_grob_property ("glyph"));
/*
urg.
*/
- Molecule m = s->compound_barline (gl, 40 PT);
+ Molecule m = Bar::compound_barline (se, gl, 40 PT);
- return m.extent (X_AXIS);
+ return ly_interval2scm ( m.extent (X_AXIS));
}
-void
-Span_bar::before_line_breaking ()
+MAKE_SCHEME_CALLBACK(Span_bar,before_line_breaking,1);
+SCM
+Span_bar::before_line_breaking (SCM smob)
+{
+ evaluate_empty (unsmob_grob (smob));
+ evaluate_glyph (unsmob_grob (smob));
+
+ /*
+ no need to call Bar::before_line_breaking (), because the info
+ in ELEMENTS already has been procced by Bar::before_line_breaking().
+ */
+ return SCM_UNSPECIFIED;
+}
+
+MAKE_SCHEME_CALLBACK(Span_bar,center_on_spanned_callback,2);
+
+SCM
+Span_bar::center_on_spanned_callback (SCM element_smob, SCM axis)
{
- Bar::before_line_breaking ();
+ Grob *me = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (axis);
+ assert (a == Y_AXIS);
+ Interval i (get_spanned_interval (me));
+
+ /*
+ Bar::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 ())
+ {
+ me->suicide();
+ return gh_double2scm (0.0);
+ }
- evaluate_empty ();
+ return gh_double2scm (i.center ());
}
void
-Span_bar::after_line_breaking ()
+Span_bar::evaluate_empty (Grob*me)
{
- Bar::after_line_breaking ();
- Interval i (get_spanned_interval ());
- translate_axis (i.center (), Y_AXIS);
+ /*
+ 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 ();
+ }
}
void
-Span_bar::evaluate_empty ()
-{
- if (!gh_pair_p (get_elt_property ("elements")))
+Span_bar::evaluate_glyph (Grob*me)
+{
+ SCM elts = me->get_grob_property ("elements");
+ Grob * b = unsmob_grob (gh_car (elts));
+ SCM glsym =ly_symbol2scm ("glyph");
+ SCM gl =b ->get_grob_property (glsym);
+ if (!gh_string_p (gl))
{
- set_elt_property ("transparent", SCM_BOOL_T);
- set_extent_callback (0, X_AXIS);
- set_extent_callback (0, Y_AXIS);
+ me->suicide ();
+ return ;
}
+
+ String type = ly_scm2string (gl);
- SCM gl = get_elt_property ("glyph");
- if (!gh_string_p (gl))
+ if (type == "|:")
+ {
+ type = ".|";
+ }
+ else if (type== ":|")
+ {
+ type = "|.";
+ }
+ else if (type== ":|:")
{
- set_elt_property ("transparent", SCM_BOOL_T);
- set_extent_callback (0, X_AXIS);
- set_extent_callback (0, Y_AXIS);
+ type = ".|.";
}
- else {
- String type_str = ly_scm2string (gl);
- if (type_str == "|:")
- {
- type_str= ".|";
- }
- else if (type_str== ":|")
- {
- type_str= "|.";
- }
- else if (type_str== ":|:")
- {
- type_str= ".|.";
- }
-
- set_elt_property ("glyph", ly_str02scm (type_str.ch_C()));
- }
+
+ gl = ly_str02scm (type.ch_C());
+ if (scm_equal_p (me->get_grob_property (glsym), gl) != SCM_BOOL_T)
+ me->set_grob_property (glsym, gl);
}
Interval
-Span_bar::get_spanned_interval () const
+Span_bar::get_spanned_interval (Grob*me)
{
- return Axis_group_interface::group_extent_callback (dim_cache_[Y_AXIS]);
+ return ly_scm2interval (Axis_group_interface::group_extent_callback (me->self_scm(), gh_int2scm (Y_AXIS)));
}
-Real
-Span_bar::get_bar_size () const
+MAKE_SCHEME_CALLBACK(Span_bar,get_bar_size,1);
+SCM
+Span_bar::get_bar_size (SCM smob)
{
- Interval iv (get_spanned_interval ());
+ Grob* me = unsmob_grob (smob);
+ Interval iv (get_spanned_interval (me));
if (iv.empty_b ())
{
- programming_error("Huh? My children deflated (FIXME)");
- iv = Interval (0,0);
+ /*
+ This happens if the bars are hara-kiried from under us.
+ */
+ me->suicide ();
+ return gh_double2scm (-1);
}
- return iv.length ();
+ return gh_double2scm (iv.length ());
}
-Span_bar::Span_bar ()
+void
+Span_bar::set_interface (Grob *me)
{
- group (this).set_interface ();
- dim_cache_[X_AXIS]->set_extent_callback (width_callback);
+ Bar::set_interface (me);
- // dim_cache_[Y_AXIS]->set_extent_callback (Axis_group_interface::group_extent_callback);
-
- dim_cache_[Y_AXIS]->set_extent_callback (0);
+ 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"));
+}
projects / lilypond.git / blobdiff