X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fspacing-interface.cc;h=c5a7e000c1cc6199af743260142262b92ff0ad1e;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=6b0964df1e664e233ae41eaef28be1904a761a23;hpb=543ccb981aacaa5a596184feb38301ac74f1d9c9;p=lilypond.git diff --git a/lily/spacing-interface.cc b/lily/spacing-interface.cc index 6b0964df1e..c5a7e000c1 100644 --- a/lily/spacing-interface.cc +++ b/lily/spacing-interface.cc @@ -4,7 +4,7 @@ source file of the GNU LilyPond music typesetter - (c) 2007 Joe Neeman + (c) 2007--2008 Joe Neeman */ #include "spacing-interface.hh" @@ -17,11 +17,14 @@ #include "paper-column.hh" #include "separation-item.hh" #include "skyline.hh" +#include "skyline-pair.hh" +#include "system.hh" -/* return the minimum distance between the left-items and the right-items of - this spacing object */ -Real -Spacing_interface::minimum_distance (Grob *me, Grob *right_col) +/* return the right-pointing skyline of the left-items and the left-pointing + skyline of the right-items (with the skyline of the left-items in + ret[LEFT]) */ +Drul_array +Spacing_interface::skylines (Grob *me, Grob *right_col) { /* the logic here is a little convoluted. A {Staff,Note}_spacing doesn't copy left-items when it clones, @@ -37,34 +40,54 @@ Spacing_interface::minimum_distance (Grob *me, Grob *right_col) Drul_array > items (ly_scm2link_array (orig->get_object ("left-items")), ly_scm2link_array (orig->get_object ("right-items"))); + Grob *system = me->get_system (); + Grob *left_col = dynamic_cast (me)->get_column (); + + Drul_array columns (left_col, right_col); + Direction d = LEFT; do { - skylines[d].set_minimum_height (0.0); - for (vsize i = 0; i < items[d].size (); i++) { - Grob *g = items[d][i]; - if (Item *it = dynamic_cast (g)) - if (Grob *piece = it->find_prebroken_piece (break_dirs[d])) + Item *g = dynamic_cast (items[d][i]); + if (g) + if (Item *piece = g->find_prebroken_piece (break_dirs[d])) g = piece; - if (Separation_item::has_interface (g)) + if (g && Separation_item::has_interface (g) && g->get_column () == columns[d]) { SCM sky_scm = g->get_property ("horizontal-skylines"); Skyline_pair *sky = Skyline_pair::unsmob (sky_scm); + + extract_grob_set (g, "elements", elts); + Grob *ycommon = common_refpoint_of_array (elts, g, Y_AXIS); + Real shift = ycommon->pure_relative_y_coordinate (system, 0, INT_MAX); + + skylines[d].shift (-shift); + if (sky) skylines[d].merge ((*sky)[-d]); else programming_error ("separation item has no skyline"); - + if (d == RIGHT && items[LEFT].size ()) skylines[d].merge (Separation_item::conditional_skyline (items[d][i], items[LEFT][0])); + + skylines[d].shift (shift); } } } while (flip (&d) != LEFT); + return skylines; +} + +Real +Spacing_interface::minimum_distance (Grob *me, Grob *right) +{ + Drul_array skylines = Spacing_interface::skylines (me, right); + return max (0.0, skylines[LEFT].distance (skylines[RIGHT])); } @@ -74,6 +97,15 @@ Spacing_interface::minimum_distance (Grob *me, Grob *right_col) this will add a new column to RIGHT-ITEMS. Here we look at the columns, and return the left-most. If there are multiple columns, we prune RIGHT-ITEMS. + + If we end up pruning, we add a left-neighbor to every column that + gets pruned. This ensures that loose columns in cross-staff music + do indeed get marked as loose. The problem situation is when a voice + passes from staff 1 to staff 2 and a clef appears later on in staff 1. + Then the NoteSpacing attached to the last note in staff 1 has two + right-items: one pointing to the next note in staff 2 and one pointing + to the clef. We will prune the clef right-item here and, unless we add + a left-neighbor to the clef, it won't get marked as loose. */ Item * Spacing_interface::right_column (Grob *me) @@ -100,6 +132,8 @@ Spacing_interface::right_column (Grob *me) mincol = col; } + else if (rank > min_rank) + prune = true; } if (prune && a) @@ -108,7 +142,15 @@ Spacing_interface::right_column (Grob *me) for (vsize i = right.size (); i--;) { if (dynamic_cast (right[i])->get_column () != mincol) - right.erase (right.begin () + i); + { + extract_grob_set (right[i], "left-neighbors", lns); + if (lns.empty ()) + Pointer_group_interface::add_grob (right[i], + ly_symbol2scm ("left-neighbors"), + dynamic_cast (me)->get_column ()); + + right.erase (right.begin () + i); + } } } @@ -159,9 +201,57 @@ Spacing_interface::left_note_columns (Grob *me) return get_note_columns (elts); } +/* + Try to find the break-aligned symbol that belongs on the D-side + of ME, sticking out in direction -D. The x size is put in LAST_EXT +*/ +Grob * +Spacing_interface::extremal_break_aligned_grob (Grob *me, + Direction d, + Direction break_dir, + Interval *last_ext) +{ + Grob *col = 0; + last_ext->set_empty (); + Grob *last_grob = 0; + + extract_grob_set (me, d == LEFT ? "left-break-aligned" : "right-break-aligned", elts); + + for (vsize i = elts.size (); i--;) + { + Item *break_item = dynamic_cast (elts[i]); + + if (break_item->break_status_dir () != break_dir) + break_item = break_item->find_prebroken_piece (break_dir); + + if (!break_item || !scm_is_pair (break_item->get_property ("space-alist"))) + continue; + + if (!col) + col = dynamic_cast (elts[0])->get_column ()->find_prebroken_piece (break_dir); + + Interval ext = break_item->extent (col, X_AXIS); + + if (ext.is_empty ()) + continue; + + if (!last_grob + || (last_grob && d * (ext[-d]- (*last_ext)[-d]) < 0)) + { + *last_ext = ext; + last_grob = break_item; + } + } + + return last_grob; +} + + ADD_INTERFACE (Spacing_interface, - "This object calculates the desired and minimum distances between two columns.", + "This object calculates the desired and minimum distances" + " between two columns.", + /* properties */ "left-items " "right-items " );