source file of the GNU LilyPond music typesetter
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "multi-measure-rest.hh"
#include "debug.hh"
#include "paper-def.hh"
-#include "lookup.hh"
-#include "dimension.hh"
+#include "paper-column.hh" // urg
+#include "font-interface.hh"
#include "rest.hh"
-#include "script.hh"
-#include "text-def.hh"
#include "molecule.hh"
+#include "misc.hh"
+#include "group-interface.hh"
+#include "spanner.hh"
+#include "staff-symbol-referencer.hh"
+#include "text-item.hh"
-IMPLEMENT_IS_TYPE_B1 (Multi_measure_rest, Item);
-
-Multi_measure_rest::Multi_measure_rest ()
+void
+Multi_measure_rest::set_interface (Score_element*me)
{
- measures_i_ = 0;
+ me->set_interface (ly_symbol2scm ("multi-measure-rest-interface"));
}
-void
-Multi_measure_rest::do_print () const
+bool
+Multi_measure_rest::has_interface (Score_element*me)
{
- DOUT << "measures_i_ " << measures_i_;
+ return me->has_interface (ly_symbol2scm ("multi-measure-rest-interface"));
}
-Molecule*
-Multi_measure_rest::brew_molecule_p () const
+ /*
+ [TODO] 17
+ * variable-sized multi-measure rest symbol: |====| ??
+*/
+MAKE_SCHEME_CALLBACK(Multi_measure_rest,brew_molecule,1);
+SCM
+Multi_measure_rest::brew_molecule (SCM smob)
{
+ Score_element *me = unsmob_element (smob);
+ Spanner * sp = dynamic_cast<Spanner*> (me);
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+
+ Interval sp_iv;
+ Direction d = LEFT;
+ do
+ {
+ Item * col = sp->get_bound (d)->column_l ();
+
+ Interval coldim = col->extent (0, X_AXIS);
+
+ sp_iv[d] = coldim[-d] ;
+ }
+ while ((flip (&d)) != LEFT);
+ Molecule mol;
+ Real x_off = 0.0;
+
+ Real rx = sp->get_bound (LEFT)->relative_coordinate (0, X_AXIS);
+ /*
+ we gotta stay clear of sp_iv, so move a bit to the right if
+ needed.
+ */
+ x_off += (sp_iv[LEFT] - rx) >? 0;
+
/*
- [TODO] 3
- * make real multi-measure rest symbol: |---|
- * make two,four,eight-measure-rest symbols
+ center between stuff.
*/
+ x_off += sp_iv.length ()/ 2;
+
+
+ Molecule s;
+
+ int measures = 1;
+ SCM m (me->get_elt_property ("measure-count"));
+ if (gh_number_p (m))
+ {
+ measures = gh_scm2int (m);
+ }
+
+
+ SCM limit = me->get_elt_property ("expand-limit");
+ if (measures <= gh_scm2int (limit))
+ {
+ /*
+ Build a rest from smaller parts. Distances inbetween are
+ really variable, see Wanske pp. 125 */
+
+ int l = measures;
+ while (l)
+ {
+ int k;
+ if (l >= 4)
+ {
+ l-=4;
+ k = -2;
+ }
+ else if (l>= 2)
+ {
+ l -= 2;
+ k = -1;
+ }
+ else
+ {
+ k = 0;
+ l --;
+ }
+
+ Real pad = s.empty_b ()
+ ? 0.0 : gh_scm2double (me->get_elt_property ("padding")) * staff_space;
+
+ Molecule r (Font_interface::get_default_font (me)->find_by_name ("rests-" + to_str (k)));
+ if (k == 0)
+ r.translate_axis (staff_space, Y_AXIS);
+
+ s.add_at_edge (X_AXIS, RIGHT, r, pad);
+ }
+
- Atom s (lookup_l ()->rest (0, 0));
- Molecule* mol_p = new Molecule ( Atom (s));
- Real interline_f = paper ()->interline_f ();
- mol_p->translate_axis (interline_f, Y_AXIS);
+ s.align_to (X_AXIS, CENTER);
+ }
+ else
+ {
+ String idx = ("rests-") + to_str (-4);
+ s = Font_interface::get_default_font (me)->find_by_name (idx);
+ }
+
+ mol.add_molecule (s);
- if (measures_i_ > 1)
+ if (measures > 1)
{
- Text_def text;
- text.text_str_ = to_str (measures_i_);
- text.style_str_ = "number";
- Atom s = text.get_atom (paper (), UP);
- s.translate_axis (3.0 * interline_f, Y_AXIS);
- mol_p->add_atom (s);
+ SCM properties = Font_interface::font_alist_chain (me);
+ Molecule s = Text_item::text2molecule (me,
+ ly_str02scm (to_str (measures).ch_C ()),
+ properties);
+ s.align_to (X_AXIS, CENTER);
+ s.translate_axis (3.0 * staff_space, Y_AXIS);
+ mol.add_molecule (s);
}
+ mol.translate_axis (x_off, X_AXIS);
+ return mol.create_scheme();
+}
+
+/*
+ UGH. JUNKME elt prop "columns" isn't really needed.
+ */
+void
+Multi_measure_rest::add_column (Score_element*me,Item* c)
+{
+ Pointer_group_interface::add_element (me, "columns",c);
+
+ add_bound_item (dynamic_cast<Spanner*> (me),c);
+}
+
+
+MAKE_SCHEME_CALLBACK (Multi_measure_rest, set_spacing_rods,1);
- return mol_p;
+SCM
+Multi_measure_rest::set_spacing_rods (SCM smob)
+{
+ Score_element*me = unsmob_element (smob);
+
+ Spanner*sp = dynamic_cast<Spanner*> (me);
+ if (!(sp->get_bound (LEFT) && sp->get_bound (RIGHT)))
+ {
+ programming_error ("Multi_measure_rest::get_rods (): I am not spanned!");
+ return SCM_UNSPECIFIED;
+ }
+
+ Item * l = sp->get_bound (LEFT)->column_l ();
+ Item * r = sp->get_bound (RIGHT)->column_l ();
+ Item * lb = l->find_prebroken_piece (RIGHT);
+ Item * rb = r->find_prebroken_piece (LEFT);
+
+ Item* combinations[4][2]={{l,r}, {lb,r}, {l,rb},{lb,rb}};
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+ for (int i=0; i < 4; i++)
+ {
+ Item * l = combinations[i][0];
+ Item *r = combinations[i][1];
+
+ if (!l || !r)
+ continue;
+
+ Rod rod;
+ rod.item_l_drul_[LEFT] = l;
+ rod.item_l_drul_[RIGHT] = r;
+
+ /*
+ should do something more advanced.
+ */
+ rod.distance_f_ = l->extent (l, X_AXIS)[BIGGER] - r->extent (r, X_AXIS)[SMALLER]
+ + gh_scm2double (me->get_elt_property ("minimum-width")) * staff_space;
+
+ rod.add_to_cols ();
+ }
+ return SCM_UNSPECIFIED;
}
projects / lilypond.git / blobdiff