X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstem.cc;h=e63b96019ae4adadf54fc6812d53be95c9a139ff;hb=840aaebd3e2b008233ef53c8026be2201a4e39fd;hp=d333690491c6d98de4d1e85bb21688afb96728f8;hpb=ad33cc4b37628e047e4c8c3b3d42d93cb7525d0f;p=lilypond.git diff --git a/lily/stem.cc b/lily/stem.cc index d333690491..e63b96019a 100644 --- a/lily/stem.cc +++ b/lily/stem.cc @@ -3,7 +3,7 @@ source file of the GNU LilyPond music typesetter - (c) 1996--2006 Han-Wen Nienhuys + (c) 1996--2007 Han-Wen Nienhuys Jan Nieuwenhuizen TODO: This is way too hairy @@ -214,36 +214,57 @@ Stem::add_head (Grob *me, Grob *n) bool Stem::is_invisible (Grob *me) { - Real stemlet_length = robust_scm2double (me->get_property ("stemlet-length"), - 0.0); + return !is_normal_stem (me) + && (robust_scm2double (me->get_property ("stemlet-length"), + 0.0) == 0.0); +} - return !((head_count (me) - || stemlet_length > 0.0) - && scm_to_int (me->get_property ("duration-log")) >= 1); + +bool +Stem::is_normal_stem (Grob *me) +{ + return head_count (me) && scm_to_int (me->get_property ("duration-log")) >= 1; } + MAKE_SCHEME_CALLBACK (Stem, pure_height, 3) SCM Stem::pure_height (SCM smob, SCM start, SCM end) { (void) start; (void) end; - - + Grob *me = unsmob_grob (smob); + Interval iv; + + if (!is_normal_stem (me)) + return ly_interval2scm (iv); + Real ss = Staff_symbol_referencer::staff_space (me); - Real len = scm_to_double (calc_length (smob)) * ss / 2; - Direction dir = get_grob_direction (me); + Real rad = Staff_symbol_referencer::staff_radius (me); - Interval iv; - Interval hp = head_positions (me); - if (dir == UP) - iv = Interval (0, len); - else - iv = Interval (-len, 0); + if (!to_boolean (me->get_property ("cross-staff"))) + { + Real len = scm_to_double (calc_length (smob)) * ss / 2; + Direction dir = get_grob_direction (me); - if (!hp.is_empty ()) - iv.translate (hp[dir] * ss / 2); + Interval hp = head_positions (me); + if (dir == UP) + iv = Interval (0, len); + else + iv = Interval (-len, 0); + + if (!hp.is_empty ()) + iv.translate (hp[dir] * ss / 2); + + /* extend the stem (away from the head) to cover the staff */ + if (dir == UP) + iv[UP] = max (iv[UP], rad * ss); + else + iv[DOWN] = min (iv[DOWN], -rad * ss); + } + else + iv = Interval (-rad * ss, rad * ss); return ly_interval2scm (iv); } @@ -263,8 +284,6 @@ Stem::calc_stem_end_position (SCM smob) return me->get_property ("stem-end-position"); } - Real ss = Staff_symbol_referencer::staff_space (me); - int durlog = duration_log (me); vector a; /* WARNING: IN HALF SPACES */ @@ -275,45 +294,10 @@ Stem::calc_stem_end_position (SCM smob) Real stem_end = dir ? hp[dir] + dir * length : 0; /* TODO: change name to extend-stems to staff/center/'() */ - bool no_extend_b = to_boolean (me->get_property ("no-stem-extend")); - if (!no_extend_b && dir * stem_end < 0) + bool no_extend = to_boolean (me->get_property ("no-stem-extend")); + if (!no_extend && dir * stem_end < 0) stem_end = 0.0; - - /* Make a little room if we have a upflag and there is a dot. - previous approach was to lengthen the stem. This is not - good typesetting practice. */ - if (!get_beam (me) && dir == UP - && durlog > 2) - { - Grob *closest_to_flag = extremal_heads (me)[dir]; - Grob *dots = closest_to_flag - ? Rhythmic_head::get_dots (closest_to_flag) : 0; - - if (dots) - { - Real dp = Staff_symbol_referencer::get_position (dots); - Interval flag_yext = flag (me).extent (Y_AXIS) * (2 / ss) + stem_end; - - /* Very gory: add myself to the X-support of the parent, - which should be a dot-column. */ - - if (flag_yext.distance (dp) < 0.5) - { - Grob *par = dots->get_parent (X_AXIS); - - if (Dot_column::has_interface (par)) - { - Side_position_interface::add_support (par, me); - - /* TODO: apply some better logic here. The flag is - curved inwards, so this will typically be too - much. */ - } - } - } - } - return scm_from_double (stem_end); } @@ -394,7 +378,7 @@ Stem::duration_log (Grob *me) return (scm_is_number (s)) ? scm_to_int (s) : 2; } -MAKE_SCHEME_CALLBACK(Stem, calc_positioning_done, 1); +MAKE_SCHEME_CALLBACK (Stem, calc_positioning_done, 1); SCM Stem::calc_positioning_done (SCM smob) { @@ -402,6 +386,8 @@ Stem::calc_positioning_done (SCM smob) if (!head_count (me)) return SCM_BOOL_T; + me->set_property ("positioning-done", SCM_BOOL_T); + extract_grob_set (me, "note-heads", ro_heads); vector heads (ro_heads); vector_sort (heads, position_less); @@ -498,7 +484,7 @@ Stem::calc_positioning_done (SCM smob) return SCM_BOOL_T; } -MAKE_SCHEME_CALLBACK(Stem, calc_direction, 1); +MAKE_SCHEME_CALLBACK (Stem, calc_direction, 1); SCM Stem::calc_direction (SCM smob) { @@ -521,7 +507,7 @@ Stem::calc_direction (SCM smob) return scm_from_int (dir); } -MAKE_SCHEME_CALLBACK(Stem, calc_default_direction, 1); +MAKE_SCHEME_CALLBACK (Stem, calc_default_direction, 1); SCM Stem::calc_default_direction (SCM smob) { @@ -547,13 +533,11 @@ SCM Stem::height (SCM smob) { Grob *me = unsmob_grob (smob); - + if (!is_normal_stem (me)) + return ly_interval2scm (Interval ()); + Direction dir = get_grob_direction (me); - /* Trigger callback. - - UGH. Should be automatic - */ Grob *beam = get_beam (me); if (beam) { @@ -562,11 +546,11 @@ Stem::height (SCM smob) } /* - Can't get_stencil(), since that would cache stencils too early. + Can't get_stencil (), since that would cache stencils too early. This causes problems with beams. */ Stencil *stencil = unsmob_stencil (print (smob)); - Interval iv = stencil ? stencil->extent (Y_AXIS) : Interval(); + Interval iv = stencil ? stencil->extent (Y_AXIS) : Interval (); if (beam) { if (dir == CENTER) @@ -594,6 +578,9 @@ Stem::flag (Grob *me) || unsmob_grob (me->get_object ("beam"))) return Stencil (); + if (!is_normal_stem (me)) + return Stencil (); + /* TODO: maybe property stroke-style should take different values, e.g. "" (i.e. no stroke), "single" and "double" (currently, it's @@ -715,6 +702,9 @@ Stem::print (SCM smob) if (!lh && stemlet && !beam) return SCM_EOL; + if (lh && robust_scm2int (lh->get_property ("duration-log"), 0) < 1) + return SCM_EOL; + if (is_invisible (me)) return SCM_EOL; @@ -793,8 +783,16 @@ SCM Stem::offset_callback (SCM smob) { Grob *me = unsmob_grob (smob); - Real r = 0.0; + extract_grob_set (me, "rests", rests); + if (rests.size ()) + { + Grob *rest = rests.back (); + Real r = rest->extent (rest, X_AXIS).center (); + return scm_from_double (r); + } + + if (Grob *f = first_head (me)) { Interval head_wid = f->extent (f, X_AXIS); @@ -807,7 +805,7 @@ Stem::offset_callback (SCM smob) Direction d = get_grob_direction (me); Real real_attach = head_wid.linear_combination (d * attach); - r = real_attach; + Real r = real_attach; /* If not centered: correct for stem thickness. */ if (attach) @@ -815,17 +813,11 @@ Stem::offset_callback (SCM smob) Real rule_thick = thickness (me); r += -d * rule_thick * 0.5; } + return scm_from_double (r); } - else - { - extract_grob_set (me, "rests", rests); - if (rests.size ()) - { - Grob *rest = rests.back (); - r = rest->extent (rest, X_AXIS).center (); - } - } - return scm_from_double (r); + + programming_error ("Weird stem."); + return scm_from_double (0.0); } Spanner * @@ -847,7 +839,7 @@ Stem::get_stem_info (Grob *me) return si; } -MAKE_SCHEME_CALLBACK(Stem, calc_stem_info, 1); +MAKE_SCHEME_CALLBACK (Stem, calc_stem_info, 1); SCM Stem::calc_stem_info (SCM smob) { @@ -898,10 +890,14 @@ Stem::calc_stem_info (SCM smob) Real height_of_my_trem = 0.0; Grob *trem = unsmob_grob (me->get_object ("tremolo-flag")); if (trem) - height_of_my_trem = trem->extent (trem, Y_AXIS).length () + { + height_of_my_trem + = Stem_tremolo::vertical_length (trem) /* hack a bit of space around the trem. */ + beam_translation; + } + /* UGH It seems that also for ideal minimum length, we must use the maximum beam count (for this direction): @@ -942,9 +938,9 @@ Stem::calc_stem_info (SCM smob) Obviously not for grace beams. Also, not for knees. Seems to be a good thing. */ - bool no_extend_b = to_boolean (me->get_property ("no-stem-extend")); + bool no_extend = to_boolean (me->get_property ("no-stem-extend")); bool is_knee = to_boolean (beam->get_property ("knee")); - if (!no_extend_b && !is_knee) + if (!no_extend && !is_knee) { /* Highest beam of (UP) beam must never be lower than middle staffline */ @@ -987,29 +983,46 @@ Stem::beam_multiplicity (Grob *stem) return le; } +bool +Stem::is_cross_staff (Grob *stem) +{ + Grob *beam = unsmob_grob (stem->get_object ("beam")); + return beam && Beam::is_cross_staff (beam); +} + +MAKE_SCHEME_CALLBACK (Stem, calc_cross_staff, 1) +SCM +Stem::calc_cross_staff (SCM smob) +{ + return scm_from_bool (is_cross_staff (unsmob_grob (smob))); +} + /* FIXME: Too many properties */ ADD_INTERFACE (Stem, - "The stem represent the graphical stem. " - "In addition, it internally connects note heads, beams and" - "tremolos. " - "Rests and whole notes have invisible stems." - - "\n\nThe following properties may be set in the details list." + "The stem represents the graphical stem. In addition, it" + " internally connects note heads, beams, and tremolos. Rests" + " and whole notes have invisible stems.\n" + "\n" + "The following properties may be set in the @code{details}" + " list.\n" + "\n" "@table @code\n" - "@item beamed-lengths \n" - "list of stem lengths given beam multiplicity. \n" - "@item beamed-minimum-free-lengths \n" - "list of normal minimum free stem lengths (chord to beams) given beam multiplicity.\n" + "@item beamed-lengths\n" + "List of stem lengths given beam multiplicity.\n" + "@item beamed-minimum-free-lengths\n" + "List of normal minimum free stem lengths (chord to beams)" + " given beam multiplicity.\n" "@item beamed-extreme-minimum-free-lengths\n" - "list of extreme minimum free stem lengths (chord to beams) given beam multiplicity.\n" + "List of extreme minimum free stem lengths (chord to beams)" + " given beam multiplicity.\n" "@item lengths\n" - "Default stem lengths. The list gives a length for each flag-count.\n" + "Default stem lengths. The list gives a length for each" + " flag count.\n" "@item stem-shorten\n" - "How much a stem in a forced direction " - "should be shortened. The list gives an amount depending on the number " - "of flags/beams." - "@end table\n" - , + "How much a stem in a forced direction should be shortened." + " The list gives an amount depending on the number of flags" + " and beams.\n" + "@end table\n", /* properties */ "avoid-note-head "