lilypond-manuals.css: edit color scheme and some spacing

[lilypond.git] / lily / lyric-extender.cc

diff --git a/lily/lyric-extender.cc b/lily/lyric-extender.cc
index b7ef26d0e090c65096306b0cde63369e38ff8bed..8afe2c5569200d48a8a4caec55c460e0af91ee8f 100644 (file)
--- a/lily/lyric-extender.cc
+++ b/lily/lyric-extender.cc
@@ -1,45 +1,58 @@
 /*
-  lyric-extender.cc -- implement Lyric_extender
-  source file of the GNU LilyPond music typesetter
+  This file is part of LilyPond, the GNU music typesetter.
 
-  (c) 1998--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+  Copyright (C) 1998--2015 Jan Nieuwenhuizen <janneke@gnu.org>
   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 <http://www.gnu.org/licenses/>.
 */
 
 #include "lyric-extender.hh"
 
-#include <math.h>
-
+#include "system.hh"
+#include "item.hh"
 #include "warn.hh"
 #include "lookup.hh"
-#include "paper-column.hh"
 #include "output-def.hh"
 #include "note-head.hh"
-#include "group-interface.hh"
+#include "pointer-group-interface.hh"
 
-MAKE_SCHEME_CALLBACK (Lyric_extender, print, 1)
-SCM 
-Lyric_extender::print (SCM smob) 
+MAKE_SCHEME_CALLBACK (Lyric_extender, print, 1);
+SCM
+Lyric_extender::print (SCM smob)
 {
-  Spanner *me = unsmob_spanner (smob);
+  Spanner *me = unsmob<Spanner> (smob);
   Item *left_edge = me->get_bound (LEFT);
-  Item *right_text = unsmob_item (me->get_property ("next"));
-  
+  Item *right_text = unsmob<Item> (me->get_object ("next"));
+
   Grob *common = left_edge;
 
   if (right_text)
     common = common->common_refpoint (right_text, X_AXIS);
-  
+
   common = common->common_refpoint (me->get_bound (RIGHT), X_AXIS);
-  Real sl = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));  
-  Link_array<Grob> heads (Pointer_group_interface__extract_grobs (me, (Grob*)0,
-                                                                 "heads"));
+  common = common->common_refpoint (me->get_system (), X_AXIS);
+
+  Real sl = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+
+  extract_grob_set (me, "heads", heads);
 
   if (!heads.size ())
     return SCM_EOL;
 
   common = common_refpoint_of_array (heads, common, X_AXIS);
-  
+
   Real left_point = 0.0;
   if (left_edge->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
     left_point = left_edge->extent (common, X_AXIS)[RIGHT];
@@ -55,37 +68,47 @@ Lyric_extender::print (SCM smob)
      note head, but haven't found a pattern in it yet. --hwn 1/1/04  */
   SCM minlen = me->get_property ("minimum-length");
   Real right_point
-    = left_point + (robust_scm2double  (minlen, 0));
+    = left_point + (robust_scm2double (minlen, 0));
+
+  right_point = min (right_point, me->get_system ()->get_bound (RIGHT)->relative_coordinate (common, X_AXIS));
 
   if (heads.size ())
-    right_point = right_point >? heads.top ()->extent (common, X_AXIS)[RIGHT];
+    right_point = max (right_point, heads.back ()->extent (common, X_AXIS)[RIGHT]);
 
   Real h = sl * robust_scm2double (me->get_property ("thickness"), 0);
-  Real pad = 2* h;
+  Drul_array<Real> paddings (robust_scm2double (me->get_property ("left-padding"), h),
+                             robust_scm2double (me->get_property ("right-padding"), h));
 
   if (right_text)
-    right_point = right_point <? (robust_relative_extent (right_text, common, X_AXIS)[LEFT] - pad);
+    right_point = min (right_point, (robust_relative_extent (right_text, common, X_AXIS)[LEFT] - paddings[RIGHT]));
 
   /* run to end of line. */
   if (me->get_bound (RIGHT)->break_status_dir ())
-    right_point = right_point >? (robust_relative_extent (me->get_bound (RIGHT), common, X_AXIS)[LEFT] - pad);
-  
-  left_point += pad;
+    right_point = max (right_point, (robust_relative_extent (me->get_bound (RIGHT), common, X_AXIS)[LEFT] - paddings[RIGHT]));
+
+  left_point += paddings[LEFT];
   Real w = right_point - left_point;
 
   if (w < 1.5 * h)
     return SCM_EOL;
-  
-  Stencil  mol (Lookup::round_filled_box (Box (Interval (0, w),
-                                              Interval (0, h)),
-                                         0.8 * h));
+
+  Stencil mol (Lookup::round_filled_box (Box (Interval (0, w),
+                                              Interval (0, h)),
+                                         0.8 * h));
   mol.translate_axis (left_point - me->relative_coordinate (common, X_AXIS),
-                     X_AXIS);
+                      X_AXIS);
   return mol.smobbed_copy ();
 }
 
-
-ADD_INTERFACE (Lyric_extender,"lyric-extender-interface",
-              "The extender is a simple line at the baseline of the lyric "
-              "that helps show the length of a melissima (tied/slurred note).",
-              "next thickness heads");
+ADD_INTERFACE (Lyric_extender,
+               "The extender is a simple line at the baseline of the lyric"
+               " that helps show the length of a melisma (a tied or slurred"
+               " note).",
+
+               /* properties */
+               "heads "
+               "left-padding "
+               "next "
+               "right-padding "
+               "thickness "
+              );