source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-
-#include "dimen.hh"
+#include "dimension-cache.hh"
#include "span-bar.hh"
#include "lookup.hh"
-#include "symbol.hh"
+#include "dimensions.hh"
#include "paper-def.hh"
#include "molecule.hh"
-#include "vertical-align-elem.hh"
+#include "align-element.hh"
+#include "warn.hh"
+#include "group-interface.hh"
+
void
-Span_bar::add (Bar*b)
+Span_bar::add_bar (Score_element*b)
{
- b->spanned_i_ ++;
- spanning_l_arr_.push (b);
+ Group_interface gi (this);
+ gi.add_element (b);
+
add_dependency (b);
}
-
-void
-Span_bar::do_substitute_dependency (Score_elem*o, Score_elem*n)
+Interval
+Span_bar::width_callback (Dimension_cache const * c)
{
- 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_ ++;
- }
+ Span_bar* s= dynamic_cast<Span_bar*> (c->element_l ());
+ Molecule m = s->lookup_l ()->bar (s->type_str_, 40 PT, s->paper_l ());
- spanning_l_arr_.substitute (bold , b);
+ return m.extent (X_AXIS);
}
-
void
-Span_bar::set (Vertical_align_element *a)
+Span_bar::do_pre_processing ()
{
- add_dependency (a);
-}
+ Bar::do_pre_processing ();
+
+ evaluate_empty ();
+ // set_empty (false, Y_AXIS); // a hack to make mark scripts work.
+}
-Interval
-Span_bar::do_width() const
+void
+Span_bar::do_post_processing ()
{
- return paper()->lookup_l ()->bar (type_str_, 40 PT).dim.x (); // ugh
+ Bar::do_post_processing ();
+ Interval i(get_spanned_interval ());
+
+ translate_axis (i.center (), Y_AXIS);
}
+
void
-Span_bar::do_pre_processing()
-{
- if (spanning_l_arr_.size() < 1)
+Span_bar::evaluate_empty ()
+{
+ if (!gh_pair_p (get_elt_property ("elements")))
{
- transparent_b_ = true;
- empty_b_ =true;
+ set_elt_property ("transparent", SCM_BOOL_T);
+ set_empty (X_AXIS);
+ set_empty (Y_AXIS);
}
- else
+ if (type_str_.empty_b ())
{
- 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_ == ":|")
+ set_elt_property ("transparent", SCM_BOOL_T);
+ set_empty (X_AXIS);
+ set_empty (Y_AXIS);
+ }
+ else if (type_str_ == "|:")
+ {
+ type_str_ = ".|";
+ }
+ else if (type_str_ == ":|")
+ {
+ type_str_ = "|.";
+ }
+ else if (type_str_ == ":|:")
+ {
+ type_str_ = ".|.";
+ }
+}
+
+Interval
+Span_bar::get_spanned_interval () const
+{
+ 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 ())
{
- type_str_ = "|.";
+ Real y = bar->relative_coordinate (common, Y_AXIS)
+ - relative_coordinate (common, Y_AXIS);
+
+ y_int.unite (y + iv);
}
}
+ return y_int;
}
-Symbol
-Span_bar::get_bar_sym (Real dy) const
+Interval
+Span_bar::height_callback (Dimension_cache const *c)
{
- return paper()->lookup_l ()->bar (type_str_, dy);
+ Span_bar * s= dynamic_cast<Span_bar*> (c->element_l ());
+ return s->get_spanned_interval ();
}
-
Molecule*
-Span_bar::brew_molecule_p() const
+Span_bar::do_brew_molecule_p () const
{
- Interval y_int;
- for (int i=0; i < spanning_l_arr_.size(); i++)
+ Interval iv (get_spanned_interval ());
+ Molecule*output = new Molecule;
+ if (!iv.empty_b())
{
- 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());
+ output->add_molecule (lookup_l ()->bar (type_str_, iv.length (), paper_l ()));
+ }
+ else
+ {
+ programming_error("Huh? My children deflated (FIXME)");
}
-
- Symbol s = get_bar_sym (y_int.length());
- Molecule*output = new Molecule (Atom (s));
- output->translate (y_int[-1], Y_AXIS);
return output;
}
-IMPLEMENT_IS_TYPE_B1(Span_bar,Bar);
-Span_bar::Span_bar()
+Span_bar::Span_bar ()
{
type_str_ = "";
+ dim_cache_[X_AXIS]->set_callback (width_callback);
+ dim_cache_[Y_AXIS]->set_callback (height_callback);
}
+