2 arpeggio.cc -- implement Arpeggio
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "output-def.hh"
13 #include "staff-symbol-referencer.hh"
14 #include "staff-symbol.hh"
16 #include "font-interface.hh"
20 MAKE_SCHEME_CALLBACK (Arpeggio, print, 1);
22 Arpeggio::print (SCM smob)
24 Grob *me = unsmob_grob (smob);
27 for (SCM s = me->get_property ("stems"); scm_is_pair (s); s = scm_cdr (s))
29 Grob * stem = unsmob_grob (scm_car (s));
30 common = common->common_refpoint (Staff_symbol_referencer::get_staff_symbol (stem),
37 Using stems here is not very convenient; should store noteheads
38 instead, and also put them into the support. Now we will mess up
39 in vicinity of a collision.
43 Real my_y = me->relative_coordinate (common, Y_AXIS);
45 for (SCM s = me->get_property ("stems"); scm_is_pair (s); s = scm_cdr (s))
47 Grob * stem = unsmob_grob (scm_car (s));
48 Grob * ss = Staff_symbol_referencer::get_staff_symbol (stem);
49 Interval iv = Stem::head_positions (stem);
50 iv *= Staff_symbol::staff_space (ss)/2.0;
52 heads.unite (iv + ss->relative_coordinate (common, Y_AXIS)
56 if (heads.is_empty ())
63 programming_error ("Huh, no heads for arpeggio found.");
67 SCM ad = me->get_property ("arpeggio-direction");
68 Direction dir = CENTER;
69 if (is_direction (ad))
75 Font_metric *fm = Font_interface::get_default_font (me);
76 Stencil squiggle = fm->find_by_name ("scripts.arpeggio");
81 arrow = fm->find_by_name ("scripts.arpeggio.arrow." + to_string (dir));
82 heads[dir] -= dir * arrow.extent (Y_AXIS).length ();
85 for (Real y = heads[LEFT] ; y < heads[RIGHT];
86 y+= squiggle. extent (Y_AXIS).length ())
87 mol.add_at_edge (Y_AXIS, UP,squiggle, 0.0, 0);
89 mol.translate_axis (heads[LEFT], Y_AXIS);
91 mol.add_at_edge (Y_AXIS, dir,arrow, 0,0);
93 return mol.smobbed_copy () ;
96 /* Draws a vertical bracket to the left of a chord
97 Chris Jackson <chris@fluffhouse.org.uk> */
99 MAKE_SCHEME_CALLBACK (Arpeggio, brew_chord_bracket, 1);
101 Arpeggio::brew_chord_bracket (SCM smob)
103 Grob *me = unsmob_grob (smob);
106 for (SCM s = me->get_property ("stems"); scm_is_pair (s); s = scm_cdr (s))
108 Grob * stem = unsmob_grob (scm_car (s));
109 common = common->common_refpoint (Staff_symbol_referencer::get_staff_symbol (stem),
114 Real my_y = me->relative_coordinate (common, Y_AXIS);
116 for (SCM s = me->get_property ("stems"); scm_is_pair (s); s = scm_cdr (s))
118 Grob * stem = unsmob_grob (scm_car (s));
119 Grob * ss = Staff_symbol_referencer::get_staff_symbol (stem);
120 Interval iv = Stem::head_positions (stem);
121 iv *= Staff_symbol::staff_space (ss)/2.0;
122 heads.unite (iv + ss->relative_coordinate (common, Y_AXIS) - my_y);
125 Real lt = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
126 Real sp = 1.5 * Staff_symbol_referencer::staff_space (me);
127 Real dy = heads.length () + sp;
130 Stencil mol (Lookup::bracket (Y_AXIS, Interval (0, dy), lt, x, lt));
131 mol.translate_axis (heads[LEFT] - sp/2.0, Y_AXIS);
132 return mol.smobbed_copy ();
137 We have to do a callback, because print () triggers a
138 vertical alignment if it is cross-staff.
140 MAKE_SCHEME_CALLBACK (Arpeggio, width_callback,2);
142 Arpeggio::width_callback (SCM smob, SCM axis)
144 Grob * me = unsmob_grob (smob);
145 Axis a = (Axis)scm_to_int (axis);
146 assert (a == X_AXIS);
147 Stencil arpeggio = Font_interface::get_default_font (me)->find_by_name ("scripts.arpeggio");
149 return ly_interval2scm (arpeggio.extent (X_AXIS));
153 ADD_INTERFACE (Arpeggio, "arpeggio-interface",
154 "Functions and settings for drawing an arpeggio symbol (a wavy line left to noteheads.",
155 "stems arpeggio-direction");