X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fitem.cc;h=f90b29d30a78445c0789de622aadd1275d916ca3;hb=a6a51abfd0195a3cf7d6ea095cf69808852f21ce;hp=fc8028e7e42d9f17ed87fa931551b77f0dca6525;hpb=62f221b6b3861ff055dc0384ec3c48cc665688cd;p=lilypond.git diff --git a/lily/item.cc b/lily/item.cc index fc8028e7e4..f90b29d30a 100644 --- a/lily/item.cc +++ b/lily/item.cc @@ -1,9 +1,20 @@ /* - item.cc -- implement Item + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1997--2015 Han-Wen Nienhuys - (c) 1997--2008 Han-Wen Nienhuys + LilyPond is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + LilyPond is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with LilyPond. If not, see . */ #include "item.hh" @@ -18,7 +29,6 @@ #include "moment.hh" - Grob * Item::clone () const { @@ -33,7 +43,7 @@ Item::Item (SCM s) } /** - Item copy ctor. Copy nothing: everything should be a elt property + Item copy ctor. Copy nothing: everything should be an elt property or a special purpose pointer (such as broken_to_drul_[]) */ Item::Item (Item const &s) : Grob (s) @@ -45,9 +55,6 @@ Item::Item (Item const &s) bool Item::is_non_musical (Grob *me) { - if (me->original ()) - return false; - Item *i = dynamic_cast (me->get_parent (X_AXIS)); return i ? Item::is_non_musical (i) : to_boolean (me->get_property ("non-musical")); } @@ -70,15 +77,13 @@ void Item::copy_breakable_items () { Drul_array new_copies; - Direction i = LEFT; - do + for (LEFT_and_RIGHT (d)) { Grob *dolly = clone (); Item *item = dynamic_cast (dolly); get_root_system (this)->typeset_grob (item); - new_copies[i] = item; + new_copies[d] = item; } - while (flip (&i) != LEFT); broken_to_drul_ = new_copies; } @@ -95,7 +100,7 @@ Item::is_broken () const void Item::discretionary_processing () { - if (is_broken ()) + if (is_broken () || original ()) return; if (Item::is_non_musical (this)) @@ -108,14 +113,12 @@ Item::find_broken_piece (System *l) const if (get_system () == l) return (Item *) (this); - Direction d = LEFT; - do + for (LEFT_and_RIGHT (d)) { Grob *s = broken_to_drul_[d]; if (s && s->get_system () == l) - return s; + return s; } - while (flip (&d) != LEFT); return 0; } @@ -158,7 +161,7 @@ Item::handle_prebroken_dependencies () bool Item::break_visible (Grob *g) { - Item *it = dynamic_cast (g); + Item *it = dynamic_cast (g); SCM vis = g->get_property ("break-visibility"); if (scm_is_vector (vis)) return to_boolean (scm_c_vector_ref (vis, it->break_status_dir () + 1)); @@ -174,9 +177,9 @@ Item::pure_is_visible (int start, int end) const int pos = 1; int pc_rank = Paper_column::get_rank (get_column ()); if (pc_rank == start) - pos = 2; + pos = 2; else if (pc_rank == end) - pos = 0; + pos = 0; return to_boolean (scm_vector_ref (vis, scm_from_int (pos))); } return true; @@ -190,32 +193,27 @@ Item::spanned_rank_interval () const } Interval_t -spanned_time_interval (Item *l, Item *r) +spanned_time_interval (Item *l, Item *r) { - Drul_array bounds (l, r); + Drul_array bounds (l, r); Interval_t iv; - Direction d = LEFT; - do + for (LEFT_and_RIGHT (d)) { if (bounds[d] && bounds[d]->get_column ()) - iv[d] = robust_scm2moment (bounds[d]->get_column ()->get_property ("when"), - iv[d]); + iv[d] = robust_scm2moment (bounds[d]->get_column ()->get_property ("when"), + iv[d]); } - while (flip (&d) != LEFT); - do + for (LEFT_and_RIGHT (d)) { if (!bounds[d] || !bounds[d]->get_column ()) - iv[d] = iv[-d]; + iv[d] = iv[-d]; } - while (flip (&d) != LEFT); - - + return iv; } - void Item::derived_mark () const { @@ -225,70 +223,67 @@ Item::derived_mark () const scm_gc_mark (broken_to_drul_[RIGHT]->self_scm ()); } -Item * -unsmob_item (SCM s) -{ - return dynamic_cast (unsmob_grob (s)); -} - Interval -Item::pure_height (Grob *g, int start, int end) +Item::pure_y_extent (Grob *g, int start, int end) { if (cached_pure_height_valid_) return cached_pure_height_ + pure_relative_y_coordinate (g, start, end); + /* Note: cached_pure_height_ does not notice if start changes, implicitly + assuming that Items' pure_heights do not depend on 'start' or 'end'. + */ - cached_pure_height_ = Grob::pure_height (this, start, end); - cached_pure_height_valid_ = true; + cache_pure_height (Grob::pure_y_extent (this, start, end)); return cached_pure_height_ + pure_relative_y_coordinate (g, start, end); } -bool -Item::less (Grob * const &g1, Grob * const &g2) +void +Item::cache_pure_height (Interval height) { - return dynamic_cast (g1)->get_column ()->get_rank () < dynamic_cast (g2)->get_column ()->get_rank (); + cached_pure_height_ = height; + cached_pure_height_valid_ = true; } ADD_INTERFACE (Item, - "Grobs can be distinguished in their role in the horizontal" - " spacing. Many grobs define constraints on the spacing by" - " their sizes, for example, note heads, clefs, stems, and all" - " other symbols with a fixed shape. These grobs form a" - " subtype called @code{Item}.\n" - "\n" - "Some items need special treatment for line breaking. For" - " example, a clef is normally only printed at the start of a" - " line (i.e., after a line break). To model this," - " @q{breakable} items (clef, key signature, bar lines, etc.)" - " are copied twice. Then we have three versions of each" - " breakable item: one version if there is no line break, one" - " version that is printed before the line break (at the end of" - " a system), and one version that is printed after the line" - " break.\n" - "\n" - "Whether these versions are visible and take up space is" - " determined by the outcome of the @code{break-visibility}" - " grob property, which is a function taking a direction" - " (@code{-1}, @code{0} or@tie{}@code{1}) as an argument. It" - " returns a cons of booleans, signifying whether this grob" - " should be transparent and have no extent.\n" - "\n" - "The following variables for @code{break-visibility} are" - " predefined:\n" - "@example\n" - " grob will show: before no after\n" - " break break break\n" - " all-invisible no no no\n" - " begin-of-line-visible no no yes\n" - " end-of-line-visible yes no no\n" - " all-visible yes yes yes\n" - " begin-of-line-invisible yes yes no\n" - " end-of-line-invisible no yes yes\n" - " center-invisible yes no yes\n" - "@end example", - - /* properties */ - "break-visibility " - "extra-spacing-height " - "extra-spacing-width " - "non-musical " - ); + "Grobs can be distinguished in their role in the horizontal" + " spacing. Many grobs define constraints on the spacing by" + " their sizes, for example, note heads, clefs, stems, and all" + " other symbols with a fixed shape. These grobs form a" + " subtype called @code{Item}.\n" + "\n" + "Some items need special treatment for line breaking. For" + " example, a clef is normally only printed at the start of a" + " line (i.e., after a line break). To model this," + " @q{breakable} items (clef, key signature, bar lines, etc.)" + " are copied twice. Then we have three versions of each" + " breakable item: one version if there is no line break, one" + " version that is printed before the line break (at the end of" + " a system), and one version that is printed after the line" + " break.\n" + "\n" + "Whether these versions are visible and take up space is" + " determined by the outcome of the @code{break-visibility}" + " grob property, which is a function taking a direction" + " (@w{@code{-1}}, @code{0} or@tie{}@code{1}) as an argument. It" + " returns a cons of booleans, signifying whether this grob" + " should be transparent and have no extent.\n" + "\n" + "The following variables for @code{break-visibility} are" + " predefined:\n" + "@example\n" + " grob will show: before no after\n" + " break break break\n" + " all-invisible no no no\n" + " begin-of-line-visible no no yes\n" + " end-of-line-visible yes no no\n" + " all-visible yes yes yes\n" + " begin-of-line-invisible yes yes no\n" + " end-of-line-invisible no yes yes\n" + " center-invisible yes no yes\n" + "@end example", + + /* properties */ + "break-visibility " + "extra-spacing-height " + "extra-spacing-width " + "non-musical " + );