X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Frest.cc;h=7fd5101d84fbcd15e73c76a11996f2b086910e1b;hb=c2a295ea8c13ed02cf786bfef5c6da2ec2d7c8a6;hp=39347b1d5bc1f7bf8628d3ab8818a2b0bf3d134d;hpb=4bdf5f822b18b10b48f619c116641e6aee1968ac;p=lilypond.git diff --git a/lily/rest.cc b/lily/rest.cc index 39347b1d5b..7fd5101d84 100644 --- a/lily/rest.cc +++ b/lily/rest.cc @@ -1,42 +1,215 @@ +/* + rest.cc -- implement Rest + + source file of the GNU LilyPond music typesetter + + (c) 1997--2009 Han-Wen Nienhuys +*/ + #include "rest.hh" -#include "dimen.hh" -#include "debug.hh" -#include "paper-def.hh" -#include "lookup.hh" -#include "molecule.hh" +#include "directional-element-interface.hh" +#include "dots.hh" +#include "font-interface.hh" +#include "international.hh" +#include "output-def.hh" +#include "paper-score.hh" +#include "staff-symbol-referencer.hh" +#include "stencil.hh" +#include "grob.hh" -Rest::Rest(int t, int d) +// -> offset callback +MAKE_SCHEME_CALLBACK (Rest, y_offset_callback, 1); +SCM +Rest::y_offset_callback (SCM smob) { - balltype = t; - dots = d; -} + Grob *me = unsmob_grob (smob); + int duration_log = scm_to_int (me->get_property ("duration-log")); + int line_count = Staff_symbol_referencer::line_count (me); + Real ss = Staff_symbol_referencer::staff_space (me); + bool position_override = scm_is_number (me->get_property ("staff-position")); + Real amount = robust_scm2double (me->get_property ("staff-position"), 0) + * 0.5 * ss; + + if (line_count % 2) + { + if (duration_log == 0 && line_count > 1) + amount += ss; + } + else + amount += ss / 2; -void -Rest::do_print()const + if (!position_override) + amount += 2 * ss * get_grob_direction (me);; + + return scm_from_double (amount); +} + +/* A rest might lie under a beam, in which case it should be cross-staff if + the beam is cross-staff because the rest's position depends on the + formatting of the beam. */ +MAKE_SCHEME_CALLBACK (Rest, calc_cross_staff, 1); +SCM +Rest::calc_cross_staff (SCM smob) { -#ifndef NPRINT - mtor << "Rest "<get_object ("stem")); + + if (!stem) + return SCM_BOOL_F; + + return stem->get_property ("cross-staff"); } -Molecule* -Rest::brew_molecule_p()const +/* + make this function easily usable in C++ +*/ +string +Rest::glyph_name (Grob *me, int balltype, string style, bool try_ledgers) { - Paper_def *p =paper(); + bool is_ledgered = false; + if (try_ledgers && (balltype == 0 || balltype == 1)) + { + Real rad = Staff_symbol_referencer::staff_radius (me) * 2.0; + Real pos = Staff_symbol_referencer::get_position (me); + + /* + Figure out when the rest is far enough outside the staff. This + could bemore generic, but hey, we understand this even after + dinner. + */ + is_ledgered |= (balltype == 0) && (pos >= +rad + 2 || pos < -rad); + is_ledgered |= (balltype == 1) && (pos <= -rad - 2 || pos > +rad); + } - Symbol s; - s = p->lookup_l()->rest(balltype); - - Molecule *m = new Molecule(Atom(s)); - if (dots) { - Symbol d =p->lookup_l()->dots(dots); - Molecule dm; - dm.add(Atom(d)); - m->add_right(dm); + string actual_style (style.c_str ()); + + if ((style == "mensural") || (style == "neomensural")) + { + + /* + FIXME: Currently, ancient font does not provide ledgered rests; + hence the "o" suffix in the glyph name is bogus. But do we need + ledgered rests at all now that we can draw ledger lines with + variable width, length and blotdiameter? -- jr + */ + is_ledgered = 0; + + /* + There are no 32th/64th/128th mensural/neomensural rests. In + these cases, revert back to default style. + */ + if (balltype > 4) + actual_style = ""; } - return m; + + if ((style == "classical") && (balltype != 2)) + { + /* + classical style: revert back to default style for any rest other + than quarter rest + */ + actual_style = ""; + } + + if (style == "default") + { + /* + Some parts of lily still prefer style "default" over "". + Correct this here. -- jr + */ + actual_style = ""; + } + + return ("rests." + to_string (balltype) + (is_ledgered ? "o" : "") + + actual_style); +} + +MAKE_SCHEME_CALLBACK (Rest, print, 1); +SCM +Rest::brew_internal_stencil (Grob *me, bool ledgered) +{ + SCM balltype_scm = me->get_property ("duration-log"); + if (!scm_is_number (balltype_scm)) + return Stencil ().smobbed_copy (); + + int balltype = scm_to_int (balltype_scm); + + string style; + SCM style_scm = me->get_property ("style"); + if (scm_is_symbol (style_scm)) + style = ly_scm2string (scm_symbol_to_string (style_scm)); + + Font_metric *fm = Font_interface::get_default_font (me); + string font_char = glyph_name (me, balltype, style, ledgered); + Stencil out = fm->find_by_name (font_char); + if (out.is_empty ()) + me->warning (_f ("rest `%s' not found", font_char.c_str ())); + + return out.smobbed_copy (); +} + +SCM +Rest::print (SCM smob) +{ + return brew_internal_stencil (unsmob_grob (smob), true); +} + +MAKE_SCHEME_CALLBACK (Rest, width, 1); +/* + We need the callback. The real stencil has ledgers depending on + Y-position. The Y-position is known only after line breaking. */ +SCM +Rest::width (SCM smob) +{ + return generic_extent_callback (unsmob_grob (smob), X_AXIS); +} + +MAKE_SCHEME_CALLBACK (Rest, height, 1); +SCM +Rest::height (SCM smob) +{ + return generic_extent_callback (unsmob_grob (smob), Y_AXIS); +} + +/* + We need the callback. The real stencil has ledgers depending on + Y-position. The Y-position is known only after line breaking. */ +SCM +Rest::generic_extent_callback (Grob *me, Axis a) +{ + /* + Don't want ledgers: ledgers depend on Y position, which depends on + rest collision, which depends on stem size which depends on beam + slop of opposite note column. + + consequence: we get too small extents and potential collisions + with ledgered rests. + */ + SCM m = brew_internal_stencil (me, a != X_AXIS); + return ly_interval2scm (unsmob_stencil (m)->extent (a)); } +MAKE_SCHEME_CALLBACK (Rest, pure_height, 3); +SCM +Rest::pure_height (SCM smob, + SCM /* start */, + SCM /* end */) +{ + Grob *me = unsmob_grob (smob); + SCM m = brew_internal_stencil (me, false); + return ly_interval2scm (unsmob_stencil (m)->extent (Y_AXIS)); +} + +ADD_INTERFACE (Rest, + "A rest symbol. The property @code{style} can be" + " @code{default}, @code{mensural}, @code{neomensural} or" + " @code{classical}.", + + /* properties */ + "direction " + "minimum-distance " + "style " + ); +