X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Farpeggio.cc;h=95da047a067bd5ced57ba29f53a0a2ee93405bbe;hb=90e4d7057f3857da049dfda3d130017d4719bd6b;hp=f0aa6ceaa2004ace6f12d357f6ef46d64af5cdf3;hpb=332da9f4d25f9f63a3222efc87fae06b0c7abbdd;p=lilypond.git diff --git a/lily/arpeggio.cc b/lily/arpeggio.cc index f0aa6ceaa2..95da047a06 100644 --- a/lily/arpeggio.cc +++ b/lily/arpeggio.cc @@ -1,156 +1,259 @@ -/* - arpeggio.cc -- implement Arpeggio +/* + This file is part of LilyPond, the GNU music typesetter. + + Copyright (C) 2000--2015 Jan Nieuwenhuizen + + LilyPond is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. - source file of the GNU LilyPond music typesetter - - (c) 2000--2004 Jan Nieuwenhuizen - */ + LilyPond is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with LilyPond. If not, see . +*/ #include "arpeggio.hh" +#include "bezier.hh" +#include "font-interface.hh" +#include "grob.hh" +#include "international.hh" +#include "lookup.hh" #include "output-def.hh" -#include "stem.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" +static Stencil +get_squiggle (Grob *me) +{ + Font_metric *fm = Font_interface::get_default_font (me); + Stencil squiggle = fm->find_by_name ("scripts.arpeggio"); -MAKE_SCHEME_CALLBACK (Arpeggio, print, 1); -SCM -Arpeggio::print (SCM smob) + return squiggle; +} + +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_cross_staff, 1); +SCM +Arpeggio::calc_cross_staff (SCM grob) +{ + Grob *me = unsmob (grob); + + extract_grob_set (me, "stems", stems); + Grob *vag = 0; + + for (vsize i = 0; i < stems.size (); i++) + { + if (!i) + vag = Grob::get_vertical_axis_group (stems[i]); + else + { + if (vag != Grob::get_vertical_axis_group (stems[i])) + return SCM_BOOL_T; + } + } + + return SCM_BOOL_F; +} + +MAKE_SCHEME_CALLBACK (Arpeggio, calc_positions, 1); +SCM +Arpeggio::calc_positions (SCM grob) +{ + Grob *me = unsmob (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); + 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); + iv *= Staff_symbol_referencer::staff_space (me) / 2.0; + Real staff_y = ss ? ss->relative_coordinate (common, Y_AXIS) : 0.0; + heads.unite (iv + staff_y - 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."); - return SCM_EOL; +MAKE_SCHEME_CALLBACK (Arpeggio, print, 1); +SCM +Arpeggio::print (SCM smob) +{ + Grob *me = unsmob (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"))) + { + /* + This is part of a cross-staff/-voice span-arpeggio, + so we need to ensure `heads' is large enough to encompass + a single trill-element since the span-arpeggio depends on + its children to prevent collisions. + */ + heads.unite (get_squiggle (me).extent (Y_AXIS)); + } + else + { + 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"); + Stencil squiggle (get_squiggle (me)); - 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)); + Font_metric *fm = Font_interface::get_default_font (me); + 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 */ 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); - } + Grob *me = unsmob (smob); + Interval heads = robust_scm2interval (me->get_property ("positions"), + Interval ()) + * Staff_symbol_referencer::staff_space (me); - 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); - } - - Real lt = me->get_layout ()->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; + Real x = robust_scm2double (me->get_property ("protrusion"), 0.4); 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 (smob); + SCM dash_definition = me->get_property ("dash-definition"); + 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 (90.0); + + Stencil mol (Lookup::slur (curve, lt, lt, dash_definition)); + 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 (SCM smob) +{ + Grob *me = unsmob (smob); + return ly_interval2scm (get_squiggle (me).extent (X_AXIS)); +} + +MAKE_SCHEME_CALLBACK (Arpeggio, pure_height, 3); SCM -Arpeggio::width_callback (SCM smob, SCM axis) +Arpeggio::pure_height (SCM smob, SCM, SCM) { - 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 (smob); + if (to_boolean (me->get_property ("cross-staff"))) + return ly_interval2scm (Interval ()); - return ly_interval2scm (arpeggio.extent (X_AXIS)); + return Grob::stencil_height (smob); } +ADD_INTERFACE (Arpeggio, + "Functions and settings for drawing an arpeggio symbol.", -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 " + "dash-definition " // TODO: make apply to non-slur arpeggios + "positions " + "protrusion " + "script-priority " // TODO: make around-note-interface + "stems " + );