Imported Upstream version 2.14.2

[lilypond.git] / lily / span-bar-engraver.cc

diff --git a/lily/span-bar-engraver.cc b/lily/span-bar-engraver.cc
index ff7bdd65dc4466eb55b1578243f383d85f505cab..5378eab765cdfee0569dbfccf868b7f1f7a8f64d 100644 (file)
--- a/lily/span-bar-engraver.cc
+++ b/lily/span-bar-engraver.cc
@@ -1,88 +1,102 @@
 /*
-  span-bar-grav.cc -- implement Span_bar_engraver
+  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 <hanwen@xs4all.nl>
 
-  (c)  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  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 <http://www.gnu.org/licenses/>.
 */
 
+#include "bar-line.hh"
+#include "item.hh"
 #include "span-bar.hh"
-#include "span-bar-engraver.hh"
-#include "vertical-align-spanner.hh"
+#include "engraver.hh"
 
-Span_bar_engraver::Span_bar_engraver()
-{
-  spanbar_p_ =0;
-  valign_l_ =0;
-}
+/**
 
-Span_bar*
-Span_bar_engraver::get_span_bar_p() const
+Make bars that span multiple "staves". Catch bars, and span a
+Span_bar over them if we find more than 2 bars.  Vertical alignment
+of staves changes the appearance of spanbars.  It is up to the
+aligner (Vertical_align_engraver, in this case, to add extra
+dependencies to the spanbars.
+*/
+class Span_bar_engraver : public Engraver
 {
-  return new Span_bar;
-}
+  Item *spanbar_;
+  vector<Item*> bars_;
 
+public:
+  TRANSLATOR_DECLARATIONS (Span_bar_engraver);
+protected:
+  DECLARE_ACKNOWLEDGER (bar_line);
+  void stop_translation_timestep ();
+};
 
-void
-Span_bar_engraver::do_creation_processing ()
+Span_bar_engraver::Span_bar_engraver ()
 {
+  spanbar_ = 0;
 }
 
 void
-Span_bar_engraver::do_removal_processing ()
-{
-}    
-
-void
-Span_bar_engraver::acknowledge_element (Score_element_info i)
+Span_bar_engraver::acknowledge_bar_line (Grob_info i)
 {
-  int depth = i.origin_grav_l_arr_.size();
-  if (depth > 1
-      && dynamic_cast<Bar *> (i.elem_l_)) 
+  int depth = i.origin_contexts (this).size ();
+  if (depth && !Span_bar::has_interface (i.grob ()))
     {
-      bar_l_arr_.push (dynamic_cast<Bar *> (i.elem_l_));
-       
-      if (bar_l_arr_.size() >= 2 && !spanbar_p_) 
-       /*
-         hmm, i do want a bracket with one staff some times, but not always
-         if (bar_l_arr_.size() >= 1 && !spanbar_p_)
+      Item *it = dynamic_cast<Item *> (i.grob ());
+      bars_.push_back (it);
 
-         --jcn
-       */
-
-       /*
-
-         use a property?  get_property ("singleStaffBracket") ?
-
-         --hwn
-        */
+      if (bars_.size () >= 2 && !spanbar_)
        {
-         spanbar_p_ = get_span_bar_p();
-         announce_element (Score_element_info (spanbar_p_,0));
-         spanbar_p_-> type_str_ = bar_l_arr_[0]->type_str_;
+         spanbar_ = make_item ("SpanBar", SCM_EOL);
+
+         spanbar_->set_parent (bars_[0], X_AXIS);
        }
     }
-  else if  (dynamic_cast<Vertical_align_spanner *> (i.elem_l_) 
-           && i.origin_grav_l_arr_.size() <= 2) 
-    {
-      valign_l_ = dynamic_cast<Vertical_align_spanner *> (i.elem_l_);
-    }
 }
 
 void
-Span_bar_engraver::do_pre_move_processing()
+Span_bar_engraver::stop_translation_timestep ()
 {
-  if (spanbar_p_) 
+  if (spanbar_)
     {
-      for (int i=0; i < bar_l_arr_.size() ; i++)
-       spanbar_p_->add_bar (bar_l_arr_[i]);
-      spanbar_p_->set_align (valign_l_);
-      typeset_element (spanbar_p_);
-      spanbar_p_ =0;
+      for (vsize i = 0; i < bars_.size (); i++)
+       Span_bar::add_bar (spanbar_, bars_[i]);
+
+      SCM vissym = ly_symbol2scm ("break-visibility");
+      SCM vis = bars_[0]->internal_get_property (vissym);
+      if (ly_is_equal (spanbar_->internal_get_property (vissym), vis))
+       spanbar_->set_property (vissym, vis);
+
+      spanbar_ = 0;
     }
-  bar_l_arr_.set_size (0);
+  bars_.resize (0);
 }
 
+#include "translator.icc"
+
+ADD_ACKNOWLEDGER (Span_bar_engraver, bar_line);
+ADD_TRANSLATOR (Span_bar_engraver,
+               /* doc */
+               "Make cross-staff bar lines: It catches all normal bar lines"
+               " and draws a single span bar across them.",
+
+               /* create */
+               "SpanBar ",
 
+               /* read */
+               "",
 
-ADD_THIS_TRANSLATOR(Span_bar_engraver);
+               /* write */
+               ""
+               );