X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstaff-symbol-referencer.cc;h=09b3d2856ec5405162e50f58e817a2e784933cce;hb=b872748c6aa8bb721ced458691b38ac2fac5dfc8;hp=87e83fadad1523842f0cddf291c30c0715f6726c;hpb=2893f2dd20c081c06c1c7356551344801f8a233a;p=lilypond.git diff --git a/lily/staff-symbol-referencer.cc b/lily/staff-symbol-referencer.cc index 87e83fadad..09b3d2856e 100644 --- a/lily/staff-symbol-referencer.cc +++ b/lily/staff-symbol-referencer.cc @@ -1,15 +1,26 @@ /* - staff-symbol-referencer.cc -- implement Staff_symbol_referencer + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1999--2015 Han-Wen Nienhuys - (c) 1999--2006 Han-Wen Nienhuys + 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. + + 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 "staff-symbol-referencer.hh" - #include "staff-symbol.hh" +#include "grob.hh" #include "output-def.hh" #include "libc-extension.hh" @@ -20,39 +31,28 @@ Staff_symbol_referencer::line_count (Grob *me) return st ? Staff_symbol::line_count (st) : 0; } -bool -Staff_symbol_referencer::on_line (Grob *me) -{ - return on_line (me, (int) rint (get_position (me))); -} - -bool -Staff_symbol_referencer::on_staff_line (Grob *me) -{ - return on_staff_line (me, (int) rint (get_position (me))); -} - bool Staff_symbol_referencer::on_line (Grob *me, int pos) { - int sz = line_count (me) - 1; - return ((pos + sz) % 2) == 0; + Grob *st = get_staff_symbol (me); + return st ? Staff_symbol::on_line (st, pos) : false; } bool Staff_symbol_referencer::on_staff_line (Grob *me, int pos) { - return on_line (me, pos) && abs (pos) <= 2 * staff_radius (me); + Grob *st = get_staff_symbol (me); + return st ? Staff_symbol::on_line (st, pos, false) : false; } Grob * Staff_symbol_referencer::get_staff_symbol (Grob *me) { - if (Staff_symbol::has_interface (me)) + if (has_interface (me)) return me; SCM st = me->get_object ("staff-symbol"); - return unsmob_grob (st); + return unsmob (st); } Real @@ -75,16 +75,30 @@ Staff_symbol_referencer::line_thickness (Grob *me) Real Staff_symbol_referencer::get_position (Grob *me) +{ + return internal_get_position (me, false); +} + +Real +Staff_symbol_referencer::pure_get_position (Grob *me) +{ + return internal_get_position (me, true); +} + +Real +Staff_symbol_referencer::internal_get_position (Grob *me, bool pure) { Real p = 0.0; Grob *st = get_staff_symbol (me); Grob *c = st ? me->common_refpoint (st, Y_AXIS) : 0; if (st && c) { - Real y = me->relative_coordinate (c, Y_AXIS) - - st->relative_coordinate (c, Y_AXIS); - - p += 2.0 * y / Staff_symbol::staff_space (st); + Real y = (pure + ? me->pure_relative_y_coordinate (c, 0, INT_MAX) + : me->relative_coordinate (c, Y_AXIS)) + - st->relative_coordinate (c, Y_AXIS); + Real space = Staff_symbol::staff_space (st); + p = (space == 0) ? 0 : 2.0 * y / space; return p; } else if (!st) @@ -92,17 +106,39 @@ Staff_symbol_referencer::get_position (Grob *me) return robust_scm2double (me->get_property ("staff-position"), p); } +Interval +Staff_symbol_referencer::extent_in_staff (Grob *me) +{ + Grob *st = get_staff_symbol (me); + Grob *c = st ? me->common_refpoint (st, Y_AXIS) : 0; + + Interval retval; + if (st && c) + { + retval = me->extent (c, Y_AXIS) + - st->relative_coordinate (c, Y_AXIS); + } + + return retval; +} + int Staff_symbol_referencer::get_rounded_position (Grob *me) { return int (rint (get_position (me))); } +int +Staff_symbol_referencer::pure_get_rounded_position (Grob *me) +{ + return int (rint (pure_get_position (me))); +} + MAKE_SCHEME_CALLBACK (Staff_symbol_referencer, callback, 1); SCM Staff_symbol_referencer::callback (SCM smob) { - Grob *me = unsmob_grob (smob); + Grob *me = unsmob (smob); SCM pos = me->get_property ("staff-position"); Real off = 0.0; @@ -129,39 +165,76 @@ will be extracted from staff-position */ void Staff_symbol_referencer::set_position (Grob *me, Real p) +{ + internal_set_position (me, p, false); +} + +void +Staff_symbol_referencer::pure_set_position (Grob *me, Real p) +{ + internal_set_position (me, p, true); +} + +void +Staff_symbol_referencer::internal_set_position (Grob *me, Real p, bool pure) { Grob *st = get_staff_symbol (me); Real oldpos = 0.0; if (st && me->common_refpoint (st, Y_AXIS)) { - oldpos = get_position (me); + oldpos = pure ? pure_get_position (me) : get_position (me); } - Real ss = Staff_symbol_referencer::staff_space (me); - me->translate_axis ((p - oldpos) * ss * 0.5, Y_AXIS); + me->translate_axis ((p - oldpos) * ss * 0.5, Y_AXIS); +} + +Interval +Staff_symbol_referencer::staff_span (Grob *me) +{ + Interval result; + if (me) + if (Grob *symb = get_staff_symbol (me)) + result = Staff_symbol::line_span (symb); + return result; } -/* Half of the height, in staff space, i.e. 2.0 for a normal staff. */ Real Staff_symbol_referencer::staff_radius (Grob *me) { - return (line_count (me) - 1) / 2.0; + /* + line_span is measured in pitch steps, not in staff spaces + */ + return staff_span (me).length () / 4.0; } int compare_position (Grob *const &a, Grob *const &b) { return sign (Staff_symbol_referencer::get_position ((Grob *)a) - - Staff_symbol_referencer::get_position ((Grob *) b)); + - Staff_symbol_referencer::get_position ((Grob *) b)); } -ADD_INTERFACE (Staff_symbol_referencer, "staff-symbol-referencer-interface", - "An object whose Y position is meant relative to a staff " - "symbol. " - "These usually have @code{Staff_symbol_referencer::callback} " - "in their @code{Y-offset-callbacks}. ", +bool +position_less (Grob *const &a, Grob *const &b) +{ + return Staff_symbol_referencer::get_position (a) + < Staff_symbol_referencer::get_position (b); +} + +bool +pure_position_less (Grob *const &a, Grob *const &b) +{ + return Staff_symbol_referencer::pure_get_position (a) + < Staff_symbol_referencer::pure_get_position (b); +} - /* properties */ - "staff-position"); +ADD_INTERFACE (Staff_symbol_referencer, + "An object whose Y@tie{}position is meant relative to a staff" + " symbol. These usually" + " have @code{Staff_symbol_referencer::callback} in their" + " @code{Y-offset-callbacks}.", + /* properties */ + "staff-position " + );