X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fitem.cc;h=0d5c67b74e844084e140d1246ad86b62f2dd566e;hb=42c9f0b04886b8a8318cb23d7fe72a90abb41afe;hp=083798be00bbe1d4e4abd9300a585d92a30a362e;hpb=5e98b3e282d175f1908dc3017412431f443642c1;p=lilypond.git diff --git a/lily/item.cc b/lily/item.cc index 083798be00..0d5c67b74e 100644 --- a/lily/item.cc +++ b/lily/item.cc @@ -3,119 +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) { - pcol_l_ = 0; - broken_to_a_[0] - = broken_to_a_[1]=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 - mtor << "(unknown)"; -#endif + broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] =0; } -Real -Item::hpos_f()const +bool +Item::breakable_b (Grob*me) { - return pcol_l_->hpos_f_ + offset().x; + if (me->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 pcol_l_->line_l_; + return dynamic_cast (parent_l (X_AXIS))->column_l (); } -int -Item::break_status_i() const +Line_of_score * +Item::line_l() const { - PCol * c = pcol_l_; - if (c->breakable_b()) - return 0; - else if (!c->daddy_l_) - return 0; - else if (c == c->daddy_l_->prebreak_p_) - return -1; - else - return 1; + Grob *g = parent_l (X_AXIS); + return g ? g->line_l () : 0; } + void Item::copy_breakable_items() { - for (int i=0; i < 2; i++) { - Item * item_p = clone()->item(); - item_p->copy_dependencies(*this); - /* add our pre and postbreaks blondly to our own y_group - Let Vertical_group_spanner figure out the mess. - */ - if ( y_group_l_ ) - y_group_l_->add_element( item_p ); - pscore_l_->typeset_item(item_p, pcol_l_, -1+ 2*i); - item_p->handle_prebroken_dependencies(); - broken_to_a_[i] = item_p; + Drul_array new_copies; + Direction i=LEFT; + do + { + Grob * dolly = clone(); + Item * item_p = dynamic_cast(dolly); + pscore_l_->line_l_->typeset_grob (item_p); + new_copies[i] =item_p; } + while (flip(&i) != LEFT); + broken_to_drul_= new_copies; } + +bool +Item::broken_b () const +{ + return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT]; +} + + +/* + Generate items for begin and end-of line. + */ void -Item::do_breakable_col_processing() +Item::discretionary_processing() { - PCol * c = pcol_l_; - if (!c->breakable_b()) - return; - + if (broken_b ()) + return; + + if (Item::breakable_b (this)) copy_breakable_items(); - handle_prebroken_dependencies(); } -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_a_[0] && broken_to_a_[0]->line_l() == l) - return broken_to_a_[0]; - else if (broken_to_a_[1] && broken_to_a_[1]->line_l() == l) - return broken_to_a_[1]; - - return 0; + if (line_l() == l) + 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(PCol*c)const +Item::find_prebroken_piece (Direction d) const { - if (c == pcol_l_ ) - return (Item *) this; // ugh + Item * me = (Item *) (this); + if (!d) + return me; + return dynamic_cast (broken_to_drul_[d]); +} - if (c == pcol_l_->prebreak_p_) - return (Item *) broken_to_a_[0]; - else if (c==pcol_l_->postbreak_p_) - return (Item *)broken_to_a_[1]; - assert(false); +Direction +Item::break_status_dir () const +{ + if (original_l_) + { + Item * i = dynamic_cast (original_l_); + + return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT; + } + else + return CENTER; } void -Item::handle_prebroken_dependencies() +Item::handle_prebroken_dependencies () +{ + 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); + } +} + +SCM +Item::do_derived_mark () { - if ( pcol_l_->breakable_b() || pcol_l_->daddy_l_ ) - Score_elem::handle_prebroken_dependencies(); + 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; }