/*
- arpegggio.cc -- implement Arpeggio
+ arpeggio.cc -- implement Arpeggio
source file of the GNU LilyPond music typesetter
- (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 2000--2003 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "molecule.hh"
#include "paper-def.hh"
-#include "lookup.hh"
#include "arpeggio.hh"
-#include "score-element.hh"
+#include "grob.hh"
#include "stem.hh"
#include "staff-symbol-referencer.hh"
+#include "staff-symbol.hh"
+#include "warn.hh"
+#include "font-interface.hh"
+#include "lookup.hh"
-bool
-Arpeggio::has_interface (Score_element* me)
-{
- return me && me->has_interface (ly_symbol2scm ("arpeggio-interface"));
-}
MAKE_SCHEME_CALLBACK (Arpeggio, brew_molecule, 1);
SCM
Arpeggio::brew_molecule (SCM smob)
{
- Score_element *me = unsmob_element (smob);
+ Grob *me = unsmob_grob (smob);
- Interval iv;
- for (SCM s = me->get_elt_property ("stems"); gh_pair_p (s); s = gh_cdr (s))
+ Grob * common = me;
+ for (SCM s = me->get_grob_property ("stems"); gh_pair_p (s); s = ly_cdr (s))
+ {
+ Grob * stem = unsmob_grob (ly_car (s));
+ common = common->common_refpoint (Staff_symbol_referencer::get_staff_symbol (stem),
+ Y_AXIS);
+ }
+
+ /*
+ TODO:
+
+ Using stems here is not very convenient; should store noteheads
+ instead, and also put them into the support. Now we will mess up
+ in vicinity of a collision.
+
+ */
+ Interval heads;
+ Real my_y = me->relative_coordinate (common, Y_AXIS);
+
+ for (SCM s = me->get_grob_property ("stems"); gh_pair_p (s); s = ly_cdr (s))
+ {
+ Grob * stem = unsmob_grob (ly_car (s));
+ Grob * ss = Staff_symbol_referencer::get_staff_symbol (stem);
+ Interval iv =Stem::head_positions (stem);
+ iv *= Staff_symbol::staff_space (ss)/2.0;
+
+ heads.unite (iv + ss->relative_coordinate (common, Y_AXIS)
+ - my_y);
+ }
+
+ if (heads.empty_b ())
{
- Score_element *stem = unsmob_element (gh_car (s));
- iv.unite (Stem::head_positions (stem));
+ programming_error ("Huh? Dumb blonde encountered?");
+ /*
+ Nee Valerie, jij bent _niet_ dom.
+ */
+ return SCM_EOL;
}
+ Direction dir = CENTER;
+ if (ly_dir_p (me->get_grob_property ("arpeggio-direction")))
+ {
+ dir = to_dir (me->get_grob_property ("arpeggio-direction"));
+ }
+
Molecule mol;
- Molecule arpeggio = me->paper_l ()->lookup_l (0)->afm_find ("scripts-arpeggio");
- Real staff_space = Staff_symbol_referencer::staff_space (me);
- for (int i = (int)iv[MIN]/ 2; i < (int)(iv[MAX] - 1)/ 2; i++)
+ Font_metric *fm =Font_interface::get_default_font (me);
+ Molecule squiggle = fm->find_by_name ("scripts-arpeggio");
+
+ Real arrow_space = (dir) ? Staff_symbol_referencer::staff_space (me) : 0.0;
+
+ Real y = heads[LEFT];
+ while (y < heads[RIGHT] - arrow_space)
+ {
+ mol.add_at_edge (Y_AXIS, UP,squiggle, 0.0, 0);
+ y+= squiggle. extent (Y_AXIS).length ();
+ }
+ mol.translate_axis (heads[LEFT], Y_AXIS);
+ if (dir)
+ mol.add_at_edge (Y_AXIS, dir,
+ fm->find_by_name ("scripts-arpeggio-arrow-" + to_string (dir)), 0.0, 0);
+
+ return mol.smobbed_copy () ;
+}
+
+/* Draws a vertical bracket to the left of a chord
+ Chris Jackson <chris@fluffhouse.org.uk> */
+
+MAKE_SCHEME_CALLBACK (Arpeggio, brew_chord_bracket, 1);
+SCM
+Arpeggio::brew_chord_bracket (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+
+ Grob * common = me;
+ for (SCM s = me->get_grob_property ("stems"); gh_pair_p (s); s = ly_cdr (s))
+ {
+ Grob * stem = unsmob_grob (ly_car (s));
+ common = common->common_refpoint (Staff_symbol_referencer::get_staff_symbol (stem),
+ Y_AXIS);
+ }
+
+ Interval heads;
+ Real my_y = me->relative_coordinate (common, Y_AXIS);
+
+ for (SCM s = me->get_grob_property ("stems"); gh_pair_p (s); s = ly_cdr (s))
{
- Molecule a (arpeggio);
- a.translate_axis (i * staff_space, Y_AXIS);
- mol.add_molecule (a);
+ Grob * stem = unsmob_grob (ly_car (s));
+ Grob * ss = Staff_symbol_referencer::get_staff_symbol (stem);
+ Interval iv = Stem::head_positions (stem);
+ iv *= Staff_symbol::staff_space (ss)/2.0;
+ heads.unite (iv + ss->relative_coordinate (common, Y_AXIS) - my_y);
}
- // mol.translate (Offset (-2 * staff_space, 0));
- return mol.create_scheme ();
+ Real lt = me->get_paper ()->get_var ("linethickness");
+ Real sp = 1.5 * Staff_symbol_referencer::staff_space (me);
+ Real dy = heads.length() + sp;
+ Real x = 0.7;
+
+ Molecule l1 = Lookup::line (lt, Offset(0, 0), Offset (0, dy));
+ Molecule bottom = Lookup::line (lt, Offset(0, 0), Offset (x, 0));
+ Molecule top = Lookup::line (lt, Offset(0, dy), Offset (x, dy));
+ Molecule mol;
+ mol.add_molecule (l1);
+ mol.add_molecule (bottom);
+ mol.add_molecule (top);
+ mol.translate_axis (heads[LEFT] - sp/2.0, Y_AXIS);
+ return mol.smobbed_copy();
}
+/*
+ We have to do a callback, because brew_molecule () triggers a
+ vertical alignment if it is cross-staff.
+ This callback also adds padding.
+*/
+MAKE_SCHEME_CALLBACK (Arpeggio, width_callback,2);
+SCM
+Arpeggio::width_callback (SCM smob, SCM axis)
+{
+ Grob * me = unsmob_grob (smob);
+ Axis a = (Axis)gh_scm2int (axis);
+ assert (a == X_AXIS);
+ Molecule arpeggio = Font_interface::get_default_font (me)->find_by_name ("scripts-arpeggio");
+
+ return ly_interval2scm (arpeggio.extent (X_AXIS) * 1.5);
+}
+
+
+ADD_INTERFACE (Arpeggio, "arpeggio-interface",
+ "Functions and settings for drawing an arpeggio symbol (a wavy line left to noteheads.",
+ "stems arpeggio-direction");
+
projects / lilypond.git / blobdiff