X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fhara-kiri-group-spanner.cc;h=90a06f145a9a0b0e7a05d0facf124d689792c2aa;hb=fd918b1b7326c387a9680c22ef2802c37ee1ed4c;hp=ae50f446850f800cf90ba1d9785f4b4c705aac22;hpb=07a5ed85c189a97d04c550679826dfc5eca2eb18;p=lilypond.git diff --git a/lily/hara-kiri-group-spanner.cc b/lily/hara-kiri-group-spanner.cc index ae50f44685..90a06f145a 100644 --- a/lily/hara-kiri-group-spanner.cc +++ b/lily/hara-kiri-group-spanner.cc @@ -3,101 +3,166 @@ source file of the GNU LilyPond music typesetter - (c) 1998--2000 Jan Nieuwenhuizen - Han-Wen Nienhuys + (c) 1998--2006 Jan Nieuwenhuizen + Han-Wen Nienhuys */ +#include "hara-kiri-group-spanner.hh" + +#include "paper-column.hh" +#include "pointer-group-interface.hh" #include "axis-group-interface.hh" #include "spanner.hh" -#include "hara-kiri-group-spanner.hh" -#include "debug.hh" -#include "item.hh" +#include "warn.hh" +MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, y_extent, 1); +SCM +Hara_kiri_group_spanner::y_extent (SCM smob) +{ + Grob *me = unsmob_grob (smob); + consider_suicide (me); + return Axis_group_interface::generic_group_extent (me, Y_AXIS); +} -MAKE_SCHEME_CALLBACK(Hara_kiri_group_spanner,y_extent,2); +MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, pure_height, 3); SCM -Hara_kiri_group_spanner::y_extent (SCM element_smob, SCM scm_axis) +Hara_kiri_group_spanner::pure_height (SCM smob, SCM start_scm, SCM end_scm) { - Grob *me = unsmob_grob (element_smob); - Axis a = (Axis) gh_scm2int (scm_axis); + Grob *me = unsmob_grob (smob); + int start = robust_scm2int (start_scm, 0); + int end = robust_scm2int (end_scm, INT_MAX); - assert (a == Y_AXIS); - consider_suicide (me); - return Axis_group_interface::group_extent_callback (me->self_scm (), scm_axis); + if (request_suicide (me, start, end)) + return ly_interval2scm (Interval ()); + return Axis_group_interface::pure_group_height (me, start, end); } +/* there is probably a way that doesn't involve re-implementing a binary + search (I would love some proper closures right now) */ +bool find_in_range (SCM vector, int low, int hi, int min, int max) +{ + if (low >= hi) + return false; + + int mid = low + (hi - low) / 2; + int val = scm_to_int (scm_c_vector_ref (vector, mid)); + if (val >= min && val <= max) + return true; + else if (val < min) + return find_in_range (vector, mid+1, hi, min, max); + return find_in_range (vector, low, mid, min, max); +} -void -Hara_kiri_group_spanner::consider_suicide(Grob*me) +bool +Hara_kiri_group_spanner::request_suicide (Grob *me, int start, int end) { - SCM worth = me->get_grob_property ("items-worth-living"); - if (gh_pair_p (worth)) - return ; + if (!to_boolean (me->get_property ("remove-empty"))) + return false; + + bool remove_first = to_boolean (me->get_property ("remove-first")); + if (!remove_first && start <= 0) + return false; + + SCM important = me->get_property ("important-column-ranks"); + if (scm_is_vector (important)) + { + int len = scm_c_vector_length (important); + if (find_in_range (important, 0, len, start, end)) + return false; + } + else /* build the important-columns-cache */ + { + extract_grob_set (me, "items-worth-living", worth); + vector ranks; + + for (vsize i = 0; i < worth.size (); i++) + { + Interval_t iv = worth[i]->spanned_rank_iv (); + for (int j = iv[LEFT]; j <= iv[RIGHT]; j++) + ranks.push_back (j); + } + vector_sort (ranks, less ()); + uniq (ranks); + + SCM scm_vec = scm_c_make_vector (ranks.size (), SCM_EOL); + for (vsize i = 0; i < ranks.size (); i++) + scm_vector_set_x (scm_vec, scm_from_int (i), scm_from_int (ranks[i])); + me->set_property ("important-column-ranks", scm_vec); + + return request_suicide (me, start, end); + } + + return true; +} - Link_array childs = Axis_group_interface::get_children (me); - for (int i = 0; i < childs.size (); i++) +void +Hara_kiri_group_spanner::consider_suicide (Grob *me) +{ + Spanner *sp = dynamic_cast (me); + int left = sp->get_bound (LEFT)->get_column ()->get_rank (); + int right = sp->get_bound (RIGHT)->get_column ()->get_rank (); + if (!request_suicide (me, left, right)) + return; + + vector childs; + Axis_group_interface::get_children (me, &childs); + for (vsize i = 0; i < childs.size (); i++) childs[i]->suicide (); - /* very appropriate name here :-) - */ + */ me->suicide (); } - - /* We can't rely on offsets and dimensions of elements in a hara-kiri group. Use a callback to make sure that hara-kiri has been done before asking for offsets. */ -MAKE_SCHEME_CALLBACK(Hara_kiri_group_spanner,force_hara_kiri_callback,2); +MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, after_line_breaking, 1); SCM -Hara_kiri_group_spanner::force_hara_kiri_callback (SCM element_smob, SCM axis) +Hara_kiri_group_spanner::after_line_breaking (SCM smob) { - Grob *me = unsmob_grob (element_smob); - Axis a = (Axis) gh_scm2int (axis); - assert (a == Y_AXIS); + Grob *me = unsmob_grob (smob); consider_suicide (me); - return gh_double2scm (0.0); + return SCM_UNSPECIFIED; } - -MAKE_SCHEME_CALLBACK(Hara_kiri_group_spanner,force_hara_kiri_in_parent_callback,2); +MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_callback, 1); SCM -Hara_kiri_group_spanner::force_hara_kiri_in_parent_callback (SCM element_smob, SCM axis) +Hara_kiri_group_spanner::force_hara_kiri_callback (SCM smob) { - Grob *daughter = unsmob_grob (element_smob); - Axis a = (Axis) gh_scm2int (axis); - assert (a == Y_AXIS); - force_hara_kiri_callback (daughter->parent_l (a)->self_scm (), axis); - return gh_double2scm ( 0.0); + Grob *me = unsmob_grob (smob); + consider_suicide (me); + return scm_from_double (0.0); } -void -Hara_kiri_group_spanner::add_element (Grob * me, Grob *e) +MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_in_y_parent_callback, 1); +SCM +Hara_kiri_group_spanner::force_hara_kiri_in_y_parent_callback (SCM smob) { - // e->add_offset_callback (force_hara_kiri_in_parent_callback, Y_AXIS); - Axis_group_interface::add_element (me, e); + Grob *daughter = unsmob_grob (smob); + force_hara_kiri_callback (daughter->get_parent (Y_AXIS)->self_scm ()); + return scm_from_double (0.0); } - void -Hara_kiri_group_spanner::set_interface (Grob*me) +Hara_kiri_group_spanner::add_interesting_item (Grob *me, Grob *n) { - me->set_interface (ly_symbol2scm ("hara-kiri-group-interface")); + Pointer_group_interface::add_unordered_grob (me, ly_symbol2scm ("items-worth-living"), n); } +ADD_INTERFACE (Hara_kiri_group_spanner, + "A group spanner that keeps track of interesting items. If it " + "doesn't contain any after linebreaking, then it " + "will remove itself and all its children.", + + + /* properties */ + "items-worth-living " + "important-column-ranks " + "remove-empty " + "remove-first " + ); -bool -Hara_kiri_group_spanner::has_interface (Grob*me) -{ - return me->has_interface (ly_symbol2scm ("hara-kiri-group-interface")); -} -void -Hara_kiri_group_spanner::add_interesting_item (Grob* me,Grob* n) -{ - me->add_dependency (n); - Pointer_group_interface::add_element (me, "items-worth-living",n); -}