(c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "dimension-cache.hh"
+
#include "span-bar.hh"
#include "lookup.hh"
#include "dimensions.hh"
#include "paper-def.hh"
#include "molecule.hh"
#include "warn.hh"
+#include "axis-group-interface.hh"
#include "group-interface.hh"
-
+#include "score-element.hh"
+#include "bar.hh"
void
-Span_bar::add_bar (Score_element*b)
+Span_bar::add_bar (Score_element*me, Score_element*b)
{
- Group_interface gi (this);
+ Pointer_group_interface gi (me);
gi.add_element (b);
- add_dependency (b);
+ me->add_dependency (b);
}
-
Interval
-Span_bar::width_callback (Dimension_cache const * c)
+Span_bar::width_callback (Score_element *se, Axis )
{
- Span_bar* s= dynamic_cast<Span_bar*> (c->element_l ());
- String gl = ly_scm2string (s->get_elt_property ("glyph"));
+ String gl = ly_scm2string (se->get_elt_property ("glyph"));
- /*urg.
+ /*
+ urg.
*/
- Molecule m = s->compound_barline (gl, 40 PT);
+ Molecule m = Bar::compound_barline (se, gl, 40 PT);
return m.extent (X_AXIS);
}
-void
-Span_bar::before_line_breaking ()
+MAKE_SCHEME_CALLBACK(Span_bar,before_line_breaking);
+SCM
+Span_bar::before_line_breaking (SCM smob)
{
- Bar::before_line_breaking ();
-
- evaluate_empty ();
-
- // set_empty (false, Y_AXIS); // a hack to make mark scripts work.
+ evaluate_empty (unsmob_element (smob));
+ evaluate_glyph (unsmob_element (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;
+}
+
+Real
+Span_bar::center_on_spanned_callback (Score_element * me, Axis a)
+{
+ 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. */
+
+ return i.center ();
}
void
-Span_bar::after_line_breaking ()
+Span_bar::evaluate_empty (Score_element*me)
{
- Bar::after_line_breaking ();
- SCM s = get_elt_property ("collapse-height");
- if (gh_number_p (s)
- && get_spanned_interval ().length () < gh_scm2double (s))
+ /*
+ 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_elt_property ("elements")))
{
- set_elt_property ("transparent", SCM_BOOL_T);
- set_empty (X_AXIS);
- set_empty (Y_AXIS);
+ me->suicide ();
}
-
- Interval i (get_spanned_interval ());
- translate_axis (i.center (), Y_AXIS);
}
void
-Span_bar::evaluate_empty ()
-{
- if (!gh_pair_p (get_elt_property ("elements")))
- {
- set_elt_property ("transparent", SCM_BOOL_T);
- set_empty (X_AXIS);
- set_empty (Y_AXIS);
- }
-
- SCM gl = get_elt_property ("glyph");
+Span_bar::evaluate_glyph (Score_element*me)
+{
+ SCM elts = me->get_elt_property ("elements");
+ Score_element * b = unsmob_element (gh_car (elts));
+ SCM glsym =ly_symbol2scm ("glyph");
+ SCM gl =b ->get_elt_property (glsym);
if (!gh_string_p (gl))
{
- set_elt_property ("transparent", SCM_BOOL_T);
- set_empty (X_AXIS);
- set_empty (Y_AXIS);
+ me->suicide ();
+ return ;
}
- else {
- String type_str = ly_scm2string (gl);
- if (type_str == "|:")
+
+ String type = ly_scm2string (gl);
+
+ if (type == "|:")
{
- type_str= ".|";
+ type = ".|";
}
- else if (type_str== ":|")
+ else if (type== ":|")
{
- type_str= "|.";
+ type = "|.";
}
- else if (type_str== ":|:")
+ else if (type== ":|:")
{
- type_str= ".|.";
+ type = ".|.";
}
- }
- /*
- uhh. should do something with type_str ?!!
- */
+ gl = ly_str02scm (type.ch_C());
+ if (scm_equal_p (me->get_elt_property (glsym), gl) != SCM_BOOL_T)
+ me->set_elt_property (glsym, gl);
}
Interval
-Span_bar::get_spanned_interval () const
+Span_bar::get_spanned_interval (Score_element*me)
{
- Interval y_int;
-
- for (SCM s = get_elt_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
- {
- Score_element *bar = unsmob_element ( gh_car (s));
-
- if (!bar)
- continue;
-
- Score_element*common = common_refpoint (bar, Y_AXIS);
-
- Interval iv (bar->extent(Y_AXIS));
- if (!iv.empty_b ())
- {
- Real y = bar->relative_coordinate (common, Y_AXIS)
- - relative_coordinate (common, Y_AXIS);
-
- y_int.unite (y + iv);
- }
- }
-
- return y_int;
+ return Axis_group_interface::group_extent_callback (me, Y_AXIS);
}
-Interval
-Span_bar::height_callback (Dimension_cache const *c)
+
+MAKE_SCHEME_CALLBACK(Span_bar,get_bar_size);
+SCM
+Span_bar::get_bar_size (SCM smob)
{
- Span_bar * s= dynamic_cast<Span_bar*> (c->element_l ());
- return s->get_spanned_interval ();
+ Score_element* me = unsmob_element (smob);
+ Interval iv (get_spanned_interval (me));
+ if (iv.empty_b ())
+ {
+ /*
+ This happens if the bars are hara-kiried from under us.
+ */
+ me->suicide ();
+ return gh_double2scm (-1);
+ }
+ return gh_double2scm (iv.length ());
}
-
-Real
-Span_bar::get_bar_size () const
+void
+Span_bar::set_interface (Score_element *me)
{
- Interval iv (get_spanned_interval ());
- if (iv.empty_b ())
- {
- programming_error("Huh? My children deflated (FIXME)");
- iv = Interval (0,0);
- }
- return iv.length ();
+ Bar::set_interface (me);
+
+ Pointer_group_interface(me).set_interface ();
+ me->set_extent_callback (width_callback, X_AXIS);
+ me->add_offset_callback (center_on_spanned_callback, Y_AXIS);
+ me->set_interface (ly_symbol2scm ("span-bar-interface"));
+ me->set_extent_callback (0, Y_AXIS);
}
-Span_bar::Span_bar ()
+bool
+Span_bar::has_interface (Score_element*m)
{
- group (this).set_interface ();
- dim_cache_[X_AXIS]->set_callback (width_callback);
- dim_cache_[Y_AXIS]->set_callback (height_callback);
+ return m && m->has_interface (ly_symbol2scm ("span-bar-interface"));
}
-
projects / lilypond.git / blobdiff