X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fitem.cc;h=6a468a6830607f6522f786c7dc15cfefdebdd5b8;hb=5670dc898dbedc105b5ff0719959317850ef443d;hp=7e36b762d9f13a384e84dfd03333425f82d0d33d;hpb=c3ff3d74ca155bac9f4676f172a7daa7af0ae5d1;p=lilypond.git diff --git a/lily/item.cc b/lily/item.cc index 7e36b762d9..6a468a6830 100644 --- a/lily/item.cc +++ b/lily/item.cc @@ -1,13 +1,25 @@ /* - 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--2011 Han-Wen Nienhuys - (c) 1997--2005 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" +#include "axis-group-interface.hh" #include "paper-score.hh" #include "warn.hh" #include "paper-column.hh" @@ -15,38 +27,39 @@ #include "system.hh" #include "pointer-group-interface.hh" +#include "moment.hh" + Grob * -Item::clone (int count) const +Item::clone () const { - return new Item (*this, count); + return new Item (*this); } -Item::Item (SCM s, Object_key const *key) - : Grob (s, key) +Item::Item (SCM s) + : Grob (s) { broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] = 0; + cached_pure_height_valid_ = false; } /** 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, int copy_count) - : Grob (s, copy_count) +Item::Item (Item const &s) + : Grob (s) { broken_to_drul_[LEFT] = broken_to_drul_[RIGHT] = 0; + cached_pure_height_valid_ = false; } bool -Item::is_breakable (Grob *me) +Item::is_non_musical (Grob *me) { - if (me->original_) + if (me->original ()) return false; - if (!dynamic_cast (me)) - me->programming_error ("only items can be breakable."); - Item *i = dynamic_cast (me->get_parent (X_AXIS)); - return (i) ? Item::is_breakable (i) : to_boolean (me->get_property ("breakable")); + return i ? Item::is_non_musical (i) : to_boolean (me->get_property ("non-musical")); } Paper_column * @@ -68,12 +81,11 @@ Item::copy_breakable_items () { Drul_array new_copies; Direction i = LEFT; - int count = 0; do { - Grob *dolly = clone (count++); + Grob *dolly = clone (); Item *item = dynamic_cast (dolly); - pscore_->root_system ()->typeset_grob (item); + get_root_system (this)->typeset_grob (item); new_copies[i] = item; } while (flip (&i) != LEFT); @@ -96,7 +108,7 @@ Item::discretionary_processing () if (is_broken ()) return; - if (Item::is_breakable (this)) + if (Item::is_non_musical (this)) copy_breakable_items (); } @@ -111,7 +123,7 @@ Item::find_broken_piece (System *l) const { Grob *s = broken_to_drul_[d]; if (s && s->get_system () == l) - return s; + return s; } while (flip (&d) != LEFT); @@ -130,9 +142,9 @@ Item::find_prebroken_piece (Direction d) const Direction Item::break_status_dir () const { - if (original_) + if (original ()) { - Item *i = dynamic_cast (original_); + Item *i = dynamic_cast (original ()); return (i->broken_to_drul_[LEFT] == this) ? LEFT : RIGHT; } @@ -149,14 +161,67 @@ Item::handle_prebroken_dependencies () Can't do this earlier, because try_visibility_lambda () might set the elt property transparent, which would then be copied. */ + if (!Item::break_visible (this)) + suicide (); +} + +bool +Item::break_visible (Grob *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)); + return true; +} + +bool +Item::pure_is_visible (int start, int end) const +{ SCM vis = get_property ("break-visibility"); if (scm_is_vector (vis)) { - bool visible = to_boolean (scm_vector_ref (vis, scm_from_int (break_status_dir () + 1))); + int pos = 1; + int pc_rank = Paper_column::get_rank (get_column ()); + if (pc_rank == start) + pos = 2; + else if (pc_rank == end) + pos = 0; + return to_boolean (scm_vector_ref (vis, scm_from_int (pos))); + } + return true; +} + +Interval_t +Item::spanned_rank_interval () const +{ + int c = get_column ()->get_rank (); + return Interval_t (c, c); +} + +Interval_t +spanned_time_interval (Item *l, Item *r) +{ + Drul_array bounds (l, r); + Interval_t iv; - if (!visible) - suicide (); + Direction d = LEFT; + do + { + if (bounds[d] && bounds[d]->get_column ()) + iv[d] = robust_scm2moment (bounds[d]->get_column ()->get_property ("when"), + iv[d]); + } + while (flip (&d) != LEFT); + + do + { + if (!bounds[d] || !bounds[d]->get_column ()) + iv[d] = iv[-d]; } + while (flip (&d) != LEFT); + + return iv; } void @@ -174,39 +239,64 @@ unsmob_item (SCM s) return dynamic_cast (unsmob_grob (s)); } +Interval +Item::pure_height (Grob *g, int start, int end) +{ + if (cached_pure_height_valid_) + return cached_pure_height_ + pure_relative_y_coordinate (g, start, end); + + cache_pure_height (Grob::pure_height (this, start, end)); + return cached_pure_height_ + pure_relative_y_coordinate (g, start, end); +} + +void +Item::cache_pure_height (Interval height) +{ + cached_pure_height_ = height; + cached_pure_height_valid_ = true; +} + ADD_INTERFACE (Item, - "item-interface", - "\n" - "\n" - "Grobs can be distinguished in their role in the horizontal spacing.\n" - "Many grobs define constraints on the spacing by their sizes. For\n" - "example, note heads, clefs, stems, and all other symbols with a fixed\n" - "shape. These grobs form a subtype called @code{Item}.\n" - "\n" - "\n" - "Some items need special treatment for line breaking. For example, a\n" - "clef is normally only printed at the start of a line (i.e. after a\n" - "line break). To model this, `breakable' items (clef, key signature,\n" - "bar lines, etc.) are copied twice. Then we have three versions of each\n" - "breakable item: one version if there is no line break, one version\n" - "that is printed before the line break (at the end of a system), one\n" - "version that is printed after the line break.\n" - "\n" - "Whether these versions are visible and take up space, is determined by\n" - "the outcome of the @code{break-visibility}. This grob property is a\n" - "function taking a direction (-1, 0 or 1) as argument. It returns a\n" - "cons of booleans, signifying whether this grob should be transparent\n" - "and have no extent.\n" - "\n" - "The following variables for 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" - "@end example\n", - "no-spacing-rods break-visibility breakable") + "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 " + );