source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "dimen.hh"
#include "span-bar.hh"
-#include "lookup.hh"
-#include "symbol.hh"
+#include "font-interface.hh"
+#include "dimensions.hh"
#include "paper-def.hh"
#include "molecule.hh"
-#include "vertical-align-elem.hh"
+#include "warn.hh"
+#include "axis-group-interface.hh"
+#include "group-interface.hh"
+#include "grob.hh"
+#include "bar.hh"
void
-Span_bar::add (Bar*b)
+Span_bar::add_bar (Grob*me, Grob*b)
{
- b->spanned_i_ ++;
- spanning_l_arr_.push (b);
- add_dependency (b);
-}
+ Pointer_group_interface::add_element (me,"elements", b);
+ me->add_dependency (b);
+}
+MAKE_SCHEME_CALLBACK(Span_bar,width_callback,2);
+SCM
+Span_bar::width_callback (SCM element_smob, SCM scm_axis)
+{
+ 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 = Bar::compound_barline (se, gl, 40 PT);
+
+ return ly_interval2scm ( m.extent (X_AXIS));
+}
-void
-Span_bar::do_substitute_dependency (Score_elem*o, Score_elem*n)
+MAKE_SCHEME_CALLBACK(Span_bar,before_line_breaking,1);
+SCM
+Span_bar::before_line_breaking (SCM smob)
{
- Bar * bold = 0;
- if (o->is_type_b (Bar::static_name()))
- bold = (Bar*)o->item();
- else
- return;
-
- bold->spanned_i_ --;
- Bar * b =0;
- if (n && n->is_type_b (Bar::static_name())) {
- b = (Bar*)n->item();
- b->spanned_i_ ++;
- }
-
- spanning_l_arr_.substitute (bold , b);
+ 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);
-void
-Span_bar::set (Vertical_align_element *a)
+SCM
+Span_bar::center_on_spanned_callback (SCM element_smob, SCM axis)
{
- add_dependency (a);
+ 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);
+ }
+
+ return gh_double2scm (i.center ());
}
-
-Interval
-Span_bar::do_width() const
+void
+Span_bar::evaluate_empty (Grob*me)
{
- return paper()->lookup_l ()->bar (type_str_, 40 PT).dim.x (); // ugh
+ /*
+ 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::do_pre_processing()
+Span_bar::evaluate_glyph (Grob*me)
{
- if ( spanning_l_arr_.size() < 1) {
- transparent_b_ = true;
- empty_b_ =true;
- } else {
- if (type_str_ == "")
- type_str_ = spanning_l_arr_[0]->type_str_;
- if (type_str_ =="") {
- transparent_b_=true;
- empty_b_ = true;
- } else if ( type_str_ == "|:") {
- type_str_ = ".|";
- } else if ( type_str_ == ":|"){
- type_str_ = "|.";
- }
+ 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))
+ {
+ me->suicide ();
+ return ;
+ }
+
+ String type = ly_scm2string (gl);
+
+ if (type == "|:")
+ {
+ type = ".|";
}
+ else if (type== ":|")
+ {
+ type = "|.";
+ }
+ else if (type== ":|:")
+ {
+ type = ".|.";
+ }
+
+ 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);
}
-Symbol
-Span_bar::get_bar_sym (Real dy) const
+Interval
+Span_bar::get_spanned_interval (Grob*me)
{
- return paper()->lookup_l ()->bar (type_str_, dy);
+ return ly_scm2interval (Axis_group_interface::group_extent_callback (me->self_scm(), gh_int2scm (Y_AXIS)));
}
-Molecule*
-Span_bar::brew_molecule_p()const
+MAKE_SCHEME_CALLBACK(Span_bar,get_bar_size,1);
+SCM
+Span_bar::get_bar_size (SCM smob)
{
- Interval y_int;
- for (int i=0; i < spanning_l_arr_.size(); i++) {
- Axis_group_element *common =
- common_group (spanning_l_arr_[i], Y_AXIS);
-
- Real y = spanning_l_arr_[i]->relative_coordinate (common, Y_AXIS)
- -relative_coordinate (common,Y_AXIS);
-
- y_int.unite (y + spanning_l_arr_[i]->height());
+ Grob* me = unsmob_grob (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);
}
-
- Symbol s = get_bar_sym (y_int.length());
- Molecule*output = new Molecule (Atom (s));
- output->translate ( y_int[-1], Y_AXIS);
- return output;
+ return gh_double2scm (iv.length ());
}
+void
+Span_bar::set_interface (Grob *me)
+{
+ Bar::set_interface (me);
+
+ me->set_interface (ly_symbol2scm ("span-bar-interface"));
+ me->set_extent_callback (SCM_EOL, Y_AXIS);
+}
-IMPLEMENT_IS_TYPE_B1(Span_bar,Bar);
-
-Span_bar::Span_bar()
+bool
+Span_bar::has_interface (Grob*m)
{
- type_str_ = "";
+ return m && m->has_interface (ly_symbol2scm ("span-bar-interface"));
}
projects / lilypond.git / blobdiff