X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fbreak-align-engraver.cc;h=160f6fe7ec2b62244ba323960f08b605ac9249bf;hb=97a0169312a260933246ab224e4f8b0969871dd5;hp=7309342dd690a96f59f52c67079010728d1bf671;hpb=58bcc84c9480dae1b21bc24d8396b91fe19e0131;p=lilypond.git diff --git a/lily/break-align-engraver.cc b/lily/break-align-engraver.cc index 7309342dd6..160f6fe7ec 100644 --- a/lily/break-align-engraver.cc +++ b/lily/break-align-engraver.cc @@ -1,9 +1,20 @@ /* - break-align-engraver.cc -- implement Break_align_engraver + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1999--2015 Han-Wen Nienhuys - (c) 1999--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 "engraver.hh" #include "protected-scm.hh" @@ -12,6 +23,9 @@ #include "axis-group-interface.hh" #include "context.hh" #include "translator-group.hh" +#include "item.hh" + +#include "translator.icc" class Break_align_engraver : public Engraver { @@ -20,39 +34,27 @@ class Break_align_engraver : public Engraver Item *left_edge_; void add_to_group (SCM, Item *); + void create_alignment (Grob_info); protected: - virtual void acknowledge_grob (Grob_info i); - virtual void stop_translation_timestep (); + void stop_translation_timestep (); virtual void derived_mark () const; - void add_column (SCM); - public: TRANSLATOR_DECLARATIONS (Break_align_engraver); + void acknowledge_break_aligned (Grob_info); + void acknowledge_break_alignable (Grob_info); }; -void -Break_align_engraver::add_column (SCM smob) -{ - Grob *e = unsmob_grob (smob); - Break_align_interface::add_element (align_, e); - -} - void Break_align_engraver::stop_translation_timestep () { - for (SCM p = column_alist_; scm_is_pair (p); p = scm_cdr (p)) - { - SCM pair = scm_car (p); - add_column (scm_cdr (pair)); - } column_alist_ = SCM_EOL; align_ = 0; left_edge_ = 0; } -Break_align_engraver::Break_align_engraver () +Break_align_engraver::Break_align_engraver (Context *c) + : Engraver (c) { column_alist_ = SCM_EOL; left_edge_ = 0; @@ -66,51 +68,78 @@ Break_align_engraver::derived_mark () const } void -Break_align_engraver::acknowledge_grob (Grob_info inf) +Break_align_engraver::acknowledge_break_alignable (Grob_info inf) { - if (Item *item = dynamic_cast (inf.grob_)) + /* + Special case for MetronomeMark: filter out items which will be aligned + on note heads rather than prefatory material + */ + if (!Item::is_non_musical (inf.item ())) + return; + + if (!align_) + create_alignment (inf); + + Grob *g = inf.grob (); + + if (!g->get_parent (X_AXIS)) + g->set_parent (align_, X_AXIS); +} + +void +Break_align_engraver::acknowledge_break_aligned (Grob_info inf) +{ + if (Item *item = dynamic_cast (inf.grob ())) { /* - Removed check for item->empty (X_AXIS). --hwn 20/1/04 + Removed check for item->empty (X_AXIS). --hwn 20/1/04 */ if (item->get_parent (X_AXIS)) - return; + return; - SCM bp = item->get_property ("breakable"); - bool breakable = (to_boolean (bp)); - if (!breakable) - return; + if (!Item::is_non_musical (item)) + return; SCM align_name = item->get_property ("break-align-symbol"); if (!scm_is_symbol (align_name)) - return; + return; if (!align_) - { - align_ = make_item ("BreakAlignment", SCM_EOL); - - Context *origin = inf.origin_contexts (this)[0]; - left_edge_ = make_item_from_properties (dynamic_cast (origin->implementation ()), - ly_symbol2scm ("LeftEdge"), - SCM_EOL, - "LeftEdge"); - add_to_group (left_edge_->get_property ("break-align-symbol"), - left_edge_); - } + create_alignment (inf); add_to_group (align_name, item); } } +void +Break_align_engraver::create_alignment (Grob_info inf) +{ + align_ = make_item ("BreakAlignment", SCM_EOL); + + Context *origin = inf.origin_contexts (this)[0]; + + Translator_group *tg = origin->implementation (); + Engraver *random_source = unsmob (scm_car (tg->get_simple_trans_list ())); + if (!random_source) + random_source = this; + + /* + Make left edge appear to come from same context as clef/bar-line etc. + */ + left_edge_ = random_source->make_item ("LeftEdge", SCM_EOL); + add_to_group (left_edge_->get_property ("break-align-symbol"), + left_edge_); +} + void Break_align_engraver::add_to_group (SCM align_name, Item *item) { SCM s = scm_assoc (align_name, column_alist_); Item *group = 0; - if (s != SCM_BOOL_F) + if (scm_is_true (s)) { - Grob *e = unsmob_grob (scm_cdr (s)); + Grob *e = unsmob (scm_cdr (s)); group = dynamic_cast (e); } else @@ -122,16 +151,33 @@ Break_align_engraver::add_to_group (SCM align_name, Item *item) column_alist_ = scm_assoc_set_x (column_alist_, align_name, group->self_scm ()); + Break_alignment_interface::add_element (align_, group); } Axis_group_interface::add_element (group, item); } +void +Break_align_engraver::boot () +{ + ADD_ACKNOWLEDGER (Break_align_engraver, break_aligned); + ADD_ACKNOWLEDGER (Break_align_engraver, break_alignable); +} + ADD_TRANSLATOR (Break_align_engraver, - "Align grobs with corresponding @code{break-align-symbols} into " - "groups, and order the groups according to @code{breakAlignOrder}. " - "The left edge of the alignment gets a separate group, with a symbol @code{left-edge}. ", - /* creats*/ "BreakAlignment BreakAlignGroup LeftEdge", - /* accepts */ "", - /* acks */ "break-aligned-interface", - /* reads */ "", - /* write */ ""); + /* doc */ + "Align grobs with corresponding @code{break-align-symbols}" + " into groups, and order the groups according to" + " @code{breakAlignOrder}. The left edge of the alignment gets" + " a separate group, with a symbol @code{left-edge}.", + + /* create */ + "BreakAlignment " + "BreakAlignGroup " + "LeftEdge ", + + /* read */ + "", + + /* write */ + "" + );