X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fitem.cc;h=0d5c67b74e844084e140d1246ad86b62f2dd566e;hb=42c9f0b04886b8a8318cb23d7fe72a90abb41afe;hp=6d72b4c5b81d0c013435b14375333672386e4a34;hpb=2862b1027f316a2f0444fa92e441ee28acf7a463;p=lilypond.git diff --git a/lily/item.cc b/lily/item.cc index 6d72b4c5b8..0d5c67b74e 100644 --- a/lily/item.cc +++ b/lily/item.cc @@ -3,155 +3,185 @@ source file of the GNU LilyPond music typesetter - (c) 1997 Han-Wen Nienhuys + (c) 1997--2000 Han-Wen Nienhuys */ -#include "p-score.hh" + +#include "paper-score.hh" #include "debug.hh" #include "item.hh" -#include "p-col.hh" -#include "elem-group.hh" +#include "paper-column.hh" #include "spanner.hh" +#include "lily-guile.hh" +#include "line-of-score.hh" -Item::Item() +Item::Item (SCM s) + : Grob (s) { - breakable_b_ = false; - break_status_i_ = 0; broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0; } -IMPLEMENT_IS_TYPE_B1(Item, Score_elem); - -void -Item::do_print() const +/** + Item copy ctor. Copy nothing: everything should be a elt property + or a special purpose pointer (such as broken_to_drul_[]) */ +Item::Item (Item const &s) + : Grob (s) { -#ifndef NPRINT - DOUT << "breakable_b_: " << breakable_b_; - DOUT << "break_status_i_: " <original_l_) + return false; + + if (!dynamic_cast(me)) + programming_error ("only items can be breakable."); + + Item * i =dynamic_cast (me->parent_l (X_AXIS)); + return (i) ? Item::breakable_b (i) : to_boolean (me->get_grob_property ("breakable")); } -Line_of_score * -Item::line_l() const +Paper_column * +Item::column_l () const { - return (axis_group_l_a_[X_AXIS])? axis_group_l_a_[X_AXIS]->line_l() : 0; + return dynamic_cast (parent_l (X_AXIS))->column_l (); } -int -Item::break_status_i() const +Line_of_score * +Item::line_l() const { - return break_status_i_; + Grob *g = parent_l (X_AXIS); + return g ? g->line_l () : 0; } + void Item::copy_breakable_items() { - if (broken_to_drul_[LEFT] || broken_to_drul_[RIGHT]) - return; Drul_array new_copies; Direction i=LEFT; do { - Item * item_p = clone()->item (); - - item_p->break_status_i_ = i; - pscore_l_->typeset_element (item_p); - item_p->handle_prebroken_dependencies(); + Grob * dolly = clone(); + Item * item_p = dynamic_cast(dolly); + pscore_l_->line_l_->typeset_grob (item_p); new_copies[i] =item_p; } - while ((i *= -1) != LEFT); + while (flip(&i) != LEFT); broken_to_drul_= new_copies; } -void -Item::do_breakable_col_processing() + +bool +Item::broken_b () const { - if (!breakable_b_) - return; + return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT]; +} - copy_breakable_items(); - handle_prebroken_dependencies(); - /* - Otherwise the broken items won't be pre_process()'ed. - */ - add_dependency (broken_to_drul_[LEFT]); - add_dependency (broken_to_drul_[RIGHT]); +/* + Generate items for begin and end-of line. + */ +void +Item::discretionary_processing() +{ + if (broken_b ()) + return; + if (Item::breakable_b (this)) + copy_breakable_items(); } -Item* -Item::find_prebroken_piece (Line_of_score*l) const +Grob* +Item::find_broken_piece (Line_of_score*l) const { if (line_l() == l) - return (Item*)this; - else if (broken_to_drul_[LEFT] && broken_to_drul_[LEFT]->line_l() == l) - return broken_to_drul_[LEFT]; - else if (broken_to_drul_[RIGHT] && broken_to_drul_[RIGHT]->line_l() == l) - return broken_to_drul_[RIGHT]; + return (Item*)(this); + + Direction d = LEFT; + do { + Grob *s = broken_to_drul_[d]; + if (s && s->line_l () == l) + return s; + } + while (flip (&d) != LEFT); return 0; } + Item* -Item::find_prebroken_piece (int breakstatus) const +Item::find_prebroken_piece (Direction d) const { - if (!breakstatus) - return (Item *) this; // ugh - else - return (Item*) broken_to_drul_[(Direction)breakstatus]; + Item * me = (Item *) (this); + if (!d) + return me; + return dynamic_cast (broken_to_drul_[d]); } -void -Item::handle_prebroken_dependencies() -{ - if (breakable_b_) - Score_elem::handle_prebroken_dependencies(); -} -int -Item::left_right_compare(Item const *l, Item const *r) +Direction +Item::break_status_dir () const { - while (!l->is_type_b (Paper_column::static_name ())) - l = l->axis_group_l_a_[X_AXIS]->item(); - while (!r->is_type_b (Paper_column::static_name ())) - r = r->axis_group_l_a_[X_AXIS]->item(); - - Paper_column *p1 = (Paper_column*)l; - Paper_column* p2 = (Paper_column*)r; - return p1->rank_i () - p2->rank_i (); -} - + if (original_l_) + { + Item * i = dynamic_cast (original_l_); -bool -Item::linked_b() const -{ - return Score_elem::linked_b() || attached_span_l_arr_.size(); + return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT; + } + else + return CENTER; } void -Item::do_junk_links() +Item::handle_prebroken_dependencies () { - attached_span_l_arr_.set_size(0); + if (original_l_) + { + mutable_property_alist_ + = handle_broken_smobs (original_l_->mutable_property_alist_, + gh_int2scm (break_status_dir ())); + } + + /* + Can't do this earlier, because try_visibility_lambda () might set + the elt property transparent, which would then be copied. + + TODO: + + handle visibility-lambda the item itself iso. breakstatusdir, so + the function can do more complicated things. + + */ + SCM vis = get_grob_property ("visibility-lambda"); + if (gh_procedure_p (vis)) + { + SCM args = scm_listify (gh_int2scm (break_status_dir ()), SCM_UNDEFINED); + SCM result = gh_apply (vis, args); + bool trans = gh_scm2bool (gh_car (result)); + bool empty = gh_scm2bool (gh_cdr (result)); + + if (empty && trans) + suicide (); + else if (empty) + { + set_extent_callback (SCM_EOL, X_AXIS); + set_extent_callback (SCM_EOL, Y_AXIS); + } + else if (trans) + set_grob_property ("molecule-callback", SCM_BOOL_T); + } } -void -Item::do_unlink() +SCM +Item::do_derived_mark () { - for (int i=0; i < attached_span_l_arr_.size (); i++) { - Spanner *&s= attached_span_l_arr_[i]; - if (s->spanned_drul_[LEFT] == this) - s->set_bounds (LEFT, 0); - if (s->spanned_drul_[RIGHT] == this) - s->set_bounds (RIGHT,0); - s =0; - } - attached_span_l_arr_.set_size (0); + if (broken_to_drul_[LEFT]) + scm_gc_mark (broken_to_drul_[LEFT]->self_scm ()); + if (broken_to_drul_[RIGHT]) + scm_gc_mark (broken_to_drul_[RIGHT]->self_scm ()); + return SCM_EOL; }