X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fitem.cc;h=099257e001cd183459b1a20734190486916ccabb;hb=94189ec2b8da6d7e89dc619c646a927adead9b19;hp=cf3891cb0be38bac2b7a640177ecbfcadbb60887;hpb=ad4297de0246935caa4c51f4e152e20009a6f64e;p=lilypond.git diff --git a/lily/item.cc b/lily/item.cc index cf3891cb0b..099257e001 100644 --- a/lily/item.cc +++ b/lily/item.cc @@ -3,226 +3,186 @@ source file of the GNU LilyPond music typesetter - (c) 1997--1999 Han-Wen Nienhuys + (c) 1997--2001 Han-Wen Nienhuys */ + #include "paper-score.hh" #include "debug.hh" #include "item.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) { broken_to_drul_[LEFT] = broken_to_drul_[RIGHT]=0; } -bool -Item::breakable_b () 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) { - if (original_l_ ) - return false; - - Item * i =dynamic_cast (parent_l (X_AXIS)); - return (i) ? i->breakable_b () : get_elt_property( breakable_scm_sym) != SCM_BOOL_F; + broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] =0; } -void -Item::do_print() const + +bool +Item::breakable_b (Grob*me) { -} + 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")); +} -Real -Item::hpos_f() const +Paper_column * +Item::column_l () const { - return absolute_coordinate (X_AXIS); + Item *parent = dynamic_cast (parent_l (X_AXIS)); + return parent ? parent->column_l () : 0; } Line_of_score * Item::line_l() const { - Graphical_element *g = parent_l (X_AXIS); - if (!g) - return 0; - return dynamic_cast (g)-> line_l (); + 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] - || !breakable_b ()) - return ; - Drul_array new_copies; Direction i=LEFT; do { - Score_element * dolly = clone(); + Grob * dolly = clone(); Item * item_p = dynamic_cast(dolly); - pscore_l_->typeset_element (item_p); + pscore_l_->line_l_->typeset_grob (item_p); new_copies[i] =item_p; } while (flip(&i) != LEFT); broken_to_drul_= new_copies; - - do - { - broken_to_drul_[i]->handle_prebroken_dependencies(); - broken_to_drul_[i]->try_visibility_lambda(); - } - while (flip(&i) != LEFT); - try_visibility_lambda (); } -void -Item::try_visibility_lambda () -{ - SCM vis = remove_elt_property (visibility_lambda_scm_sym); - if (vis != SCM_BOOL_F) - { - SCM args = scm_listify (gh_int2scm (break_status_dir ()), SCM_UNDEFINED); - SCM result = gh_apply ( SCM_CDR(vis), args); - int trans = gh_scm2bool (gh_car (result)); - int empty = gh_scm2bool (gh_cdr (result)); - - if (empty) - set_empty (true); - if (trans) - set_elt_property (transparent_scm_sym, SCM_BOOL_T); - } -} -void -Item::do_break () +bool +Item::broken_b () const { - 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]); + 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() { - if (breakable_b ()) - do_break (); - else - try_visibility_lambda (); + 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]; + + 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 (Direction d) const { + Item * me = (Item *) (this); if (!d) - return (Item *) (this); // ugh - else - return dynamic_cast (broken_to_drul_[d]); -} - -void -Item::handle_prebroken_dependencies() -{ - if (original_l_) - Score_element::handle_prebroken_dependencies(); + return me; + return dynamic_cast (broken_to_drul_[d]); } -bool -Item::broken_original_b () const -{ - return broken_to_drul_[LEFT] || broken_to_drul_[RIGHT]; -} -int -Item::left_right_compare(Item const *l, Item const *r) -{ - Paper_column *p1 = l->column_l (); - Paper_column* p2 = r->column_l (); - return p1->rank_i () - p2->rank_i (); -} - -Paper_column * -Item::column_l () const +Direction +Item::break_status_dir () const { - return dynamic_cast (parent_l (X_AXIS))->column_l (); -} + if (original_l_) + { + Item * i = dynamic_cast (original_l_); -Item::Item (Item const &s) - : Score_element (s) -{ - broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] =0; + return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT; + } + else + return CENTER; } - void -Item::handle_prebroken_dependents () +Item::handle_prebroken_dependencies () { - Item * parent = dynamic_cast (parent_l (X_AXIS)); - if (breakable_b () && parent) + if (original_l_) { - if(!(broken_to_drul_[LEFT] || broken_to_drul_[RIGHT])) - do_break (); + 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: - Direction d = LEFT; - do + 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) { - Item * broken_self = find_prebroken_piece (d); - Item * broken_parent = parent->find_prebroken_piece (d); - - broken_self->dim_cache_[X_AXIS]->parent_l_ = - broken_parent->dim_cache_[X_AXIS]; - - /* - ugh. Should do this is after breaking? - */ - if (!broken_self->parent_l (Y_AXIS)) - { - Score_element * yparent =dynamic_cast(parent_l (Y_AXIS)); - Item *yparenti = dynamic_cast (yparent); - Item *broken_yparent = yparenti ? - yparenti->find_prebroken_piece (d) : 0; - - if (!yparent) - programming_error ("Vertical refpoint lost!"); - else if (yparenti) - { - broken_self->dim_cache_[Y_AXIS]->parent_l_ = - broken_yparent->dim_cache_[Y_AXIS]; - } - } + set_extent_callback (SCM_EOL, X_AXIS); + set_extent_callback (SCM_EOL, Y_AXIS); } - while ((flip (&d))!=LEFT); + else if (trans) + set_grob_property ("molecule-callback", SCM_BOOL_T); } } -Direction -Item::break_status_dir () const +SCM +Item::do_derived_mark () { - if (original_l_) - { - Item * i = dynamic_cast (original_l_); - - return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT; - } - else - return CENTER; + 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; }