X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstaff-spacing.cc;h=90e6882ea2614d61e583893e55acfecaa4950061;hb=f0b7ccb46df75c89e1f69dd4ef42ab370f1847fe;hp=8493dd93261e5b60f59efa2de36bf302d77a7e08;hpb=ce521e79fd7669b45c8c1132e4b5693a03b5d90a;p=lilypond.git diff --git a/lily/staff-spacing.cc b/lily/staff-spacing.cc index 8493dd9326..90e6882ea2 100644 --- a/lily/staff-spacing.cc +++ b/lily/staff-spacing.cc @@ -1,46 +1,55 @@ -/* - staff-spacing.cc -- implement Staff_spacing - - source file of the GNU LilyPond music typesetter +/* + staff-spacing.cc -- implement Staff_spacing - (c) 2001--2002 Han-Wen Nienhuys + source file of the GNU LilyPond music typesetter + (c) 2001--2005 Han-Wen Nienhuys */ -#include -#include "paper-column.hh" -#include "separation-item.hh" -#include "item.hh" #include "staff-spacing.hh" -#include "grob.hh" + +#include + +#include "paper-column.hh" +#include "separation-item.hh" #include "warn.hh" #include "bar-line.hh" #include "staff-symbol-referencer.hh" #include "note-column.hh" #include "stem.hh" - -bool -Staff_spacing::has_interface (Grob* g) -{ - return g && g->has_interface (ly_symbol2scm ("staff-spacing-interface")); -} +#include "accidental-placement.hh" /* Insert some more space for the next note, in case it has a stem in the wrong direction - - */ +*/ Real -Staff_spacing::next_note_correction (Grob * me, - Grob * g, +Staff_spacing::next_note_correction (Grob *me, + Grob *g, Interval bar_size) { if (!g || !Note_column::has_interface (g)) return 0.0; - Item *col =dynamic_cast (g)->column_l (); + Item *col = dynamic_cast (g)->get_column (); Real max_corr = 0. >? (- g->extent (col, X_AXIS)[LEFT]); - if (Grob * a = Note_column::accidentals (g)) + + /* + Duh. If this gets out of hand, we should invent something more generic. + */ + if (Grob *a = Note_column::accidentals (g)) + { + Interval v; + if (Accidental_placement::has_interface (a)) + { + v = Accidental_placement::get_relevant_accidental_extent (a, col, me); + } + else + v = a->extent (col, X_AXIS); + + max_corr = max_corr >? (- v[LEFT]); + } + if (Grob *a = unsmob_grob (g->get_property ("arpeggio"))) { max_corr = max_corr >? (- a->extent (col, X_AXIS)[LEFT]); } @@ -49,25 +58,25 @@ Staff_spacing::next_note_correction (Grob * me, Let's decrease the space a little if the problem is not located after a barline. */ - if (bar_size.empty_b ()) + if (bar_size.is_empty ()) max_corr *= 0.75; - - if (!bar_size.empty_b()) - if (Grob *stem = Note_column::stem_l (g)) + + if (!bar_size.is_empty ()) + if (Grob *stem = Note_column::get_stem (g)) { Direction d = Stem::get_direction (stem); if (d == DOWN) { Real stem_start = Stem::head_positions (stem) [DOWN]; - Real stem_end = Stem::stem_end_position (stem); + Real stem_end = Stem::stem_end_position (stem); Interval stem_posns (stem_start ? stem_start); stem_posns.intersect (bar_size); - Real corr = abs (stem_posns.length ()/7.) get_grob_property ("stem-spacing-correction")); + Real corr = abs (stem_posns.length () / 7.) get_property ("stem-spacing-correction"), 1); if (d != DOWN) corr = 0.0; @@ -77,7 +86,6 @@ Staff_spacing::next_note_correction (Grob * me, return max_corr; } - /* Y-positions that are covered by BAR_GROB, in the case that it is a barline. */ @@ -85,17 +93,17 @@ Interval Staff_spacing::bar_y_positions (Grob *bar_grob) { Interval bar_size; - bar_size.set_empty(); + bar_size.set_empty (); if (Bar_line::has_interface (bar_grob)) { - SCM glyph = bar_grob->get_grob_property ("glyph"); - - String glyph_str = gh_string_p (glyph) ? ly_scm2string (glyph) : ""; - if (glyph_str.left_str (1) == "|" || glyph_str.left_str (1) == ".") + SCM glyph = bar_grob->get_property ("glyph"); + + String glyph_string = scm_is_string (glyph) ? ly_scm2string (glyph) : ""; + if (glyph_string.left_string (1) == "|" || glyph_string.left_string (1) == ".") { - SCM sz = Bar_line::get_staff_bar_size (bar_grob->self_scm()); - bar_size = Interval (-1,1); - bar_size *= gh_scm2double (sz) + SCM sz = Bar_line::get_staff_bar_size (bar_grob->self_scm ()); + bar_size = Interval (-1, 1); + bar_size *= robust_scm2double (sz, 1) / Staff_symbol_referencer::staff_space (bar_grob); } } @@ -108,79 +116,45 @@ Staff_spacing::bar_y_positions (Grob *bar_grob) This is slightly convoluted, since the staffspacing grob gets pointers to the separation-items, not the note-columns or note-spacings. - - */ +*/ Real -Staff_spacing::next_notes_correction (Grob *me, Grob * last_grob) +Staff_spacing::next_notes_correction (Grob *me, Grob *last_grob) { Interval bar_size = bar_y_positions (last_grob); - Real max_corr =0.0; - for (SCM s = me->get_grob_property ("right-items"); - gh_pair_p (s); s = gh_cdr (s)) - { - Grob * g = unsmob_grob (gh_car (s)); - max_corr = max_corr >? next_note_correction (me, g, bar_size); - for (SCM t = g->get_grob_property ("elements"); - gh_pair_p (t); t = gh_cdr (t)) - max_corr = max_corr >? next_note_correction (me, unsmob_grob (gh_car (t)), bar_size); - - } - return max_corr; -} + Real max_corr = 0.0; -/* - Try to find the break-aligned symbol in SEPARATION_ITEM that is - sticking out at direction D. The x size is put in LAST_EXT -*/ -Grob* -Staff_spacing::extremal_break_aligned_grob (Grob *separation_item, Direction d, - Interval * last_ext) -{ - Grob *left_col = dynamic_cast (separation_item)->column_l (); - last_ext->set_empty (); - Grob *last_grob = 0; - for (SCM s = separation_item->get_grob_property ("elements"); - gh_pair_p (s); s = gh_cdr (s)) + for (SCM s = me->get_property ("right-items"); + scm_is_pair (s); s = scm_cdr (s)) { - Grob * break_item = unsmob_grob (gh_car (s)); - - if (!gh_symbol_p (break_item->get_grob_property ("break-align-symbol"))) - continue; + Grob *g = unsmob_grob (scm_car (s)); - Interval ext = break_item->extent (left_col, X_AXIS); - - if (ext.empty_b ()) - continue; - if (!last_grob - || (last_grob && d * (ext[d]- (*last_ext)[d]) > 0) ) - { - *last_ext = ext; - last_grob = break_item; - } + max_corr = max_corr >? next_note_correction (me, g, bar_size); + for (SCM t = g->get_property ("elements"); + scm_is_pair (t); t = scm_cdr (t)) + max_corr = max_corr >? next_note_correction (me, unsmob_grob (scm_car (t)), bar_size); } - return last_grob; + return max_corr; } -/* -*/ void -Staff_spacing::get_spacing_params (Grob *me, Real * space, Real * fixed) +Staff_spacing::get_spacing_params (Grob *me, Real *space, Real *fixed) { *space = 1.0; *fixed = 1.0; - Grob * separation_item=0; - - for (SCM s = me->get_grob_property ("left-items"); - gh_pair_p (s); s = gh_cdr(s)) + Grob *separation_item = 0; + Item *me_item = dynamic_cast (me); + + for (SCM s = me->get_property ("left-items"); + scm_is_pair (s); s = scm_cdr (s)) { - Grob * cand = unsmob_grob(gh_car (s)); + Grob *cand = unsmob_grob (scm_car (s)); if (cand && Separation_item::has_interface (cand)) - separation_item = cand ; + separation_item = cand; } - // printf ("doing col %d\n" , Paper_column::rank_i(left_col)); + // printf ("doing col %d\n" , Paper_column::get_rank (left_col)); if (!separation_item) { @@ -189,45 +163,79 @@ Staff_spacing::get_spacing_params (Grob *me, Real * space, Real * fixed) } Interval last_ext; - Grob *last_grob = extremal_break_aligned_grob (separation_item, RIGHT, - &last_ext); + Grob *last_grob = Separation_item::extremal_break_aligned_grob (separation_item, RIGHT, + &last_ext); if (!last_grob) { - programming_error ("empty break column? --fixme"); - return ; + /* + TODO: + + Should insert a adjustable space here? For excercises, you might want to + use a staff without a clef in the beginning. + */ + + /* + we used to have a warning here, but it generates a lot of + spurious error messages. + */ + return; } *fixed = last_ext[RIGHT]; *space = *fixed + 1.0; - - SCM alist = last_grob->get_grob_property ("space-alist"); + + SCM alist = last_grob->get_property ("space-alist"); if (!scm_list_p (alist)) - return ; + return; - SCM space_def = scm_sloppy_assq (ly_symbol2scm ("begin-of-note"), alist); - if (!gh_pair_p (space_def)) + SCM space_def = scm_sloppy_assq (ly_symbol2scm ("first-note"), alist); + if (me_item->break_status_dir () == CENTER) { - programming_error ("Unknown prefatory spacing. "); - return; + SCM nndef = scm_sloppy_assq (ly_symbol2scm ("next-note"), alist); + if (scm_is_pair (nndef)) + space_def = nndef; } - space_def = gh_cdr (space_def); - Real distance = gh_scm2double (gh_cdr (space_def)); - SCM type = gh_car (space_def) ; - - *fixed = last_ext[RIGHT]; - if (type == ly_symbol2scm ("extra-space")) - *space = *fixed + distance; - else if (type == ly_symbol2scm("minimum-space")) - *space = last_ext[LEFT] + (last_ext.length () >? distance); - + if (!scm_is_pair (space_def)) + { + programming_error ("Unknown prefatory spacing. "); + return; + } - *space += next_notes_correction (me, last_grob); + space_def = scm_cdr (space_def); + Real distance = scm_to_double (scm_cdr (space_def)); + SCM type = scm_car (space_def); - if (dynamic_cast (me)-> break_status_dir () == RIGHT) + *fixed = last_ext[RIGHT]; + if (type == ly_symbol2scm ("fixed-space")) + { + *fixed += distance; + *space = *fixed; + } + else if (type == ly_symbol2scm ("extra-space")) + { + *space = *fixed + distance; + } + else if (type == ly_symbol2scm ("semi-fixed-space")) { - /* Start of line: this space is not stretchable */ + *fixed += distance / 2; + *space = *fixed + distance / 2; + } + else if (type == ly_symbol2scm ("minimum-space")) + { + *space = last_ext[LEFT] + (last_ext.length () >? distance); + } + else if (type == ly_symbol2scm ("minimum-fixed-space")) + { + *space = last_ext[LEFT] + (last_ext.length () >? distance); *fixed = *space; } - + + *space += next_notes_correction (me, last_grob); } + +ADD_INTERFACE (Staff_spacing, "staff-spacing-interface", + "This object calculates spacing details from a " + " breakable symbol (left) to another object. For example, it takes care " + " of optical spacing from a bar lines to a note.", + "stem-spacing-correction left-items right-items");