Imported Upstream version 2.14.2

[lilypond.git] / lily / double-percent-repeat-engraver.cc

diff --git a/lily/double-percent-repeat-engraver.cc b/lily/double-percent-repeat-engraver.cc
new file mode 100644 (file)
index 0000000..ad64657
--- /dev/null
+++ b/lily/double-percent-repeat-engraver.cc
@@ -0,0 +1,113 @@
+/*
+  This file is part of LilyPond, the GNU music typesetter.
+
+  Copyright (C) 2011 Neil Puttock <n.puttock@gmail.com>
+
+  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 "engraver.hh"
+#include "global-context.hh"
+#include "international.hh"
+#include "item.hh"
+#include "side-position-interface.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+
+#include "translator.icc"
+
+class Double_percent_repeat_engraver : public Engraver
+{
+public:
+  TRANSLATOR_DECLARATIONS (Double_percent_repeat_engraver);
+
+protected:
+  Stream_event *percent_event_;
+
+  // moment (global time) where percent started
+  Moment start_mom_;
+
+  DECLARE_TRANSLATOR_LISTENER (double_percent);
+
+  void process_music ();
+};
+
+Double_percent_repeat_engraver::Double_percent_repeat_engraver ()
+{
+  percent_event_ = 0;
+}
+
+IMPLEMENT_TRANSLATOR_LISTENER (Double_percent_repeat_engraver, double_percent);
+void
+Double_percent_repeat_engraver::listen_double_percent (Stream_event *ev)
+{
+  if (!percent_event_)
+    {
+      Moment meas_len (robust_scm2moment (get_property ("measureLength"),
+                                         Moment (1)));
+      start_mom_ = now_mom () + meas_len;
+      get_global_context ()->add_moment_to_process (start_mom_);
+      percent_event_ = ev;
+    }
+  else
+    ASSIGN_EVENT_ONCE (percent_event_, ev);
+}
+
+void
+Double_percent_repeat_engraver::process_music ()
+{
+  if (percent_event_ && now_mom ().main_part_ == start_mom_.main_part_)
+    {
+      Item *double_percent = make_item ("DoublePercentRepeat",
+                                       percent_event_->self_scm ());
+
+      SCM count = percent_event_->get_property ("repeat-count");
+      if (count != SCM_EOL && to_boolean (get_property ("countPercentRepeats"))
+         && check_repeat_count_visibility (context (), count))
+       {
+         Item *double_percent_counter
+           = make_item ("DoublePercentRepeatCounter",
+                        percent_event_->self_scm ());
+
+         SCM text = scm_number_to_string (count, scm_from_int (10));
+         double_percent_counter->set_property ("text", text);
+
+         Side_position_interface::add_support (double_percent_counter,
+                                               double_percent);
+         double_percent_counter->set_parent (double_percent, Y_AXIS);
+         double_percent_counter->set_parent (double_percent, X_AXIS);
+       }
+      // forbid breaks on a % line
+      context ()->get_score_context ()->set_property ("forbidBreak",
+                                                     SCM_BOOL_T);
+      percent_event_ = 0;
+    }
+}
+
+ADD_TRANSLATOR (Double_percent_repeat_engraver,
+               /* doc */
+               "Make double measure repeats.",
+
+               /* create */
+               "DoublePercentRepeat "
+               "DoublePercentRepeatCounter ",
+
+               /* read */
+               "countPercentRepeats "
+               "measureLength "
+               "repeatCountVisibility ",
+
+               /* write */
+               "forbidBreak "
+               );