source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "molecule.hh"
#include "crescendo.hh"
-#include "lookup.hh"
+#include "spanner.hh"
+#include "font-interface.hh"
#include "dimensions.hh"
#include "paper-def.hh"
#include "debug.hh"
#include "paper-column.hh"
-#include "atom.hh"
-
-Crescendo::Crescendo ()
-{
- set_elt_property ("dynamic-drul", gh_cons (SCM_BOOL_F, SCM_BOOL_F));
-}
+MAKE_SCHEME_CALLBACK (Crescendo, brew_molecule, 1);
-
-Molecule*
-Crescendo::do_brew_molecule_p () const
+SCM
+Crescendo::brew_molecule (SCM smob)
{
- Real absdyn_dim = paper_l ()-> get_var ("crescendo_shorten");
- Real extra_left = get_broken_left_end_align ();
-
- SCM dir = get_elt_property("grow-dir");
- SCM dyns = get_elt_property ("dynamic-drul");
+ Score_element *me= unsmob_element (smob);
+ Spanner *span = dynamic_cast<Spanner*>(me);
+ Real staff_space = me->paper_l ()->get_var ("staffspace");
+ Real line = me->paper_l ()->get_var ("stafflinethickness");
+
+ Real broken_left = span->get_broken_left_end_align ();
- if (!isdir_b (dir) || !gh_pair_p (dyns))
+ SCM s = me->get_elt_property("grow-direction");
+ if (!isdir_b (s))
{
- Crescendo* urg= (Crescendo*)this;
- urg->set_elt_property ("transparent", SCM_BOOL_T);
- return new Molecule;
+ me->suicide ();
+ return SCM_EOL;
}
- Direction gd = to_dir (dir);
-
- bool dynleft= to_boolean (gh_car (dyns));
- bool dynright = to_boolean (gh_cdr (dyns));
-
- if (dynleft)
- extra_left += absdyn_dim;
-
-
+ Direction grow_dir = to_dir (s);
- Real width = spanner_length()- get_broken_left_end_align ();
-
- if (dynleft)
- {
- width -= absdyn_dim;
- }
- if (dynright)
- {
- width -= absdyn_dim;
- }
+ Real width = span->spanner_length ();
+ width -= span->get_broken_left_end_align ();
if (width < 0)
{
- warning (_ ("crescendo") + " " + _ ("too small"));
+ warning (_ ((grow_dir < 0) ? "decrescendo too small"
+ : "crescendo too small"));
width = 0;
}
Drul_array<bool> broken;
Direction d = LEFT;
- do {
- Paper_column* s = dynamic_cast<Paper_column*>(spanned_drul_[d]); // UGH
- broken[d] = (!s->musical_b ());
- } while (flip (&d) != LEFT);
-
-
- bool continued = broken[Direction (-gd)];
- Real height = paper_l()->get_var ("crescendo_height");
- Real thick = paper_l ()->get_var ("crescendo_thickness");
-
- const char* hairpin = (gd < 0)? "decrescendo" : "crescendo";
- Atom at (gh_list (ly_symbol2scm (hairpin),
- gh_double2scm (thick),
- gh_double2scm (width),
- gh_double2scm (height),
- gh_double2scm (continued ? height/2 : 0.0),
- SCM_UNDEFINED));
- Molecule * m
- = new Molecule;
+ do
+ {
+ Paper_column* s = dynamic_cast<Paper_column*> (span->get_bound (d)); // UGH
+ broken[d] = (!s->musical_b ());
+ }
+ while (flip (&d) != LEFT);
- m->dim_.x () = Interval (0, width);
- m->dim_.y () = Interval (-2*height, 2*height);
- m->add_atom (&at);
+ bool continued = broken[Direction (-grow_dir)];
+ Real height = staff_space * gh_scm2double (me->get_elt_property ("height"));
+ Real thick = line * gh_scm2double (me->get_elt_property ("thickness"));
- m->translate_axis (extra_left, X_AXIS);
- return m;
+ const char* type = (grow_dir < 0) ? "decrescendo" : "crescendo";
+ SCM hairpin = gh_list (ly_symbol2scm (type),
+ gh_double2scm (thick),
+ gh_double2scm (width),
+ gh_double2scm (height),
+ gh_double2scm (continued ? height/2 : 0.0),
+ SCM_UNDEFINED);
+
+ Box b (Interval (0, width), Interval (-2*height, 2*height));
+ Molecule mol (b, hairpin);
+ mol.translate_axis (broken_left, X_AXIS);
+
+ return mol.create_scheme ();
}