-/*
+/*
arpeggio.cc -- implement Arpeggio
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
- */
-#include "stencil.hh"
-#include "output-def.hh"
+ (c) 2000--2008 Jan Nieuwenhuizen <janneke@gnu.org>
+*/
+
#include "arpeggio.hh"
+
+#include "bezier.hh"
+#include "font-interface.hh"
#include "grob.hh"
-#include "stem.hh"
+#include "lookup.hh"
+#include "output-def.hh"
+#include "pointer-group-interface.hh"
#include "staff-symbol-referencer.hh"
#include "staff-symbol.hh"
+#include "stem.hh"
#include "warn.hh"
-#include "font-interface.hh"
-#include "lookup.hh"
-
-MAKE_SCHEME_CALLBACK (Arpeggio, print, 1);
-SCM
-Arpeggio::print (SCM smob)
+Grob *
+Arpeggio::get_common_y (Grob *me)
{
- Grob *me = unsmob_grob (smob);
-
- Grob * common = me;
- for (SCM s = me->get_property ("stems"); scm_is_pair (s); s = scm_cdr (s))
+ Grob *common = me;
+
+ extract_grob_set (me, "stems", stems);
+ for (vsize i = 0; i < stems.size (); i++)
{
- Grob * stem = unsmob_grob (scm_car (s));
- common = common->common_refpoint (Staff_symbol_referencer::get_staff_symbol (stem),
- Y_AXIS);
+ Grob *stem = stems[i];
+ common = common->common_refpoint (Staff_symbol_referencer::get_staff_symbol (stem),
+ Y_AXIS);
}
+ return common;
+}
+
+MAKE_SCHEME_CALLBACK(Arpeggio, calc_positions, 1);
+SCM
+Arpeggio::calc_positions (SCM grob)
+{
+ Grob *me = unsmob_grob (grob);
+ Grob *common = get_common_y (me);
+
/*
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_property ("stems"); scm_is_pair (s); s = scm_cdr (s))
+
+ extract_grob_set (me, "stems", stems);
+ for (vsize i = 0; i < stems.size (); i++)
{
- Grob * stem = unsmob_grob (scm_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;
-
+ Grob *stem = stems[i];
+ 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.is_empty ())
- {
- /*
- Dumb blonde error
+ heads *= 1/Staff_symbol_referencer::staff_space(me);
+
+ return ly_interval2scm (heads);
+}
- :-)
- */
- programming_error ("Huh, no heads for arpeggio found.");
+MAKE_SCHEME_CALLBACK (Arpeggio, print, 1);
+SCM
+Arpeggio::print (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ Interval heads = robust_scm2interval (me->get_property ("positions"),
+ Interval())
+ * Staff_symbol_referencer::staff_space (me);
+
+ if (heads.is_empty () || heads.length () < 0.5)
+ {
+ if (!to_boolean (me->get_property ("transparent")))
+ {
+ me->warning ("no heads for arpeggio found?");
+ me->suicide ();
+ }
return SCM_EOL;
}
SCM ad = me->get_property ("arpeggio-direction");
Direction dir = CENTER;
if (is_direction (ad))
- {
- dir = to_dir (ad);
- }
-
+ dir = to_dir (ad);
+
Stencil mol;
- Font_metric *fm =Font_interface::get_default_font (me);
- Stencil squiggle = fm->find_by_name ("scripts-arpeggio");
+ Font_metric *fm = Font_interface::get_default_font (me);
+ Stencil squiggle = fm->find_by_name ("scripts.arpeggio");
- Stencil arrow ;
+ /*
+ Compensate for rounding error which may occur when a chord
+ reaches the center line, resulting in an extra squiggle
+ being added to the arpeggio stencil. This value is appreciably
+ larger than the rounding error, which is in the region of 1e-16
+ for a global-staff-size of 20, but small enough that it does not
+ interfere with smaller staff sizes.
+ */
+ const Real epsilon = 1e-3;
+
+ Stencil arrow;
if (dir)
{
- arrow = fm->find_by_name ("scripts-arpeggio-arrow-" + to_string (dir));
+ arrow = fm->find_by_name ("scripts.arpeggio.arrow." + to_string (dir));
heads[dir] -= dir * arrow.extent (Y_AXIS).length ();
}
-
- for (Real y= heads[LEFT] ; y < heads[RIGHT];
- y+= squiggle. extent (Y_AXIS).length ())
- mol.add_at_edge (Y_AXIS, UP,squiggle, 0.0, 0);
+
+ while (mol.extent (Y_AXIS).length () + epsilon < heads.length ())
+ {
+ mol.add_at_edge (Y_AXIS, UP, squiggle, 0.0);
+ }
mol.translate_axis (heads[LEFT], Y_AXIS);
if (dir)
- mol.add_at_edge (Y_AXIS, dir,arrow, 0,0);
-
- return mol.smobbed_copy () ;
+ mol.add_at_edge (Y_AXIS, dir, arrow, 0);
+
+ return mol.smobbed_copy ();
}
-/* Draws a vertical bracket to the left of a chord
+/* 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)
+SCM
+Arpeggio::brew_chord_bracket (SCM smob)
{
Grob *me = unsmob_grob (smob);
-
- Grob * common = me;
- for (SCM s = me->get_property ("stems"); scm_is_pair (s); s = scm_cdr (s))
- {
- Grob * stem = unsmob_grob (scm_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_property ("stems"); scm_is_pair (s); s = scm_cdr (s))
- {
- Grob * stem = unsmob_grob (scm_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);
- }
+ Interval heads = robust_scm2interval (me->get_property ("positions"),
+ Interval())
+ * Staff_symbol_referencer::staff_space (me);
- Real lt = me->get_paper ()->get_dimension (ly_symbol2scm ("linethickness"));
+ Real lt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
Real sp = 1.5 * Staff_symbol_referencer::staff_space (me);
Real dy = heads.length () + sp;
Real x = 0.7;
Stencil mol (Lookup::bracket (Y_AXIS, Interval (0, dy), lt, x, lt));
- mol.translate_axis (heads[LEFT] - sp/2.0, Y_AXIS);
+ mol.translate_axis (heads[LEFT] - sp / 2.0, Y_AXIS);
return mol.smobbed_copy ();
}
+MAKE_SCHEME_CALLBACK (Arpeggio, brew_chord_slur, 1);
+SCM
+Arpeggio::brew_chord_slur (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ Interval heads = robust_scm2interval (me->get_property ("positions"),
+ Interval())
+ * Staff_symbol_referencer::staff_space (me);
+
+ Real lt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+ Real dy = heads.length ();
+
+ Real height_limit = 1.5;
+ Real ratio = .33;
+ Bezier curve = slur_shape (dy, height_limit, ratio);
+ curve.rotate (M_PI / 2);
+
+ Stencil mol (Lookup::slur (curve, lt, lt));
+ mol.translate_axis (heads[LEFT], Y_AXIS);
+ return mol.smobbed_copy ();
+}
/*
We have to do a callback, because print () triggers a
vertical alignment if it is cross-staff.
*/
-MAKE_SCHEME_CALLBACK (Arpeggio, width_callback,2);
+MAKE_SCHEME_CALLBACK (Arpeggio, width, 1);
SCM
-Arpeggio::width_callback (SCM smob, SCM axis)
+Arpeggio::width (SCM smob)
{
- Grob * me = unsmob_grob (smob);
- Axis a = (Axis)scm_to_int (axis);
- assert (a == X_AXIS);
- Stencil arpeggio = Font_interface::get_default_font (me)->find_by_name ("scripts-arpeggio");
+ Grob *me = unsmob_grob (smob);
+ Stencil arpeggio = Font_interface::get_default_font (me)->find_by_name ("scripts.arpeggio");
return ly_interval2scm (arpeggio.extent (X_AXIS));
}
+MAKE_SCHEME_CALLBACK (Arpeggio, height, 1);
+SCM
+Arpeggio::height (SCM smob)
+{
+ return Grob::stencil_height (smob);
+}
+
+MAKE_SCHEME_CALLBACK (Arpeggio, pure_height, 3);
+SCM
+Arpeggio::pure_height (SCM smob, SCM, SCM)
+{
+ Grob *me = unsmob_grob (smob);
+ if (to_boolean (me->get_property ("cross-staff")))
+ return ly_interval2scm (Interval ());
+
+ return height (smob);
+}
+
+ADD_INTERFACE (Arpeggio,
+ "Functions and settings for drawing an arpeggio symbol (a"
+ " wavy line left to noteheads.",
-ADD_INTERFACE (Arpeggio, "arpeggio-interface",
- "Functions and settings for drawing an arpeggio symbol (a wavy line left to noteheads.",
- "stems arpeggio-direction");
+ /* properties */
+ "arpeggio-direction "
+ "positions "
+ "script-priority " // TODO: make around-note-interface
+ "stems "
+ );
projects / lilypond.git / blobdiff