/*
- 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--2003 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 "box.hh"
+#include "system.hh"
+#include "item.hh"
#include "warn.hh"
#include "lookup.hh"
-#include "molecule.hh"
-#include "paper-column.hh"
-#include "paper-def.hh"
-#include "lyric-extender.hh"
+#include "output-def.hh"
#include "note-head.hh"
+#include "pointer-group-interface.hh"
-MAKE_SCHEME_CALLBACK (Lyric_extender,brew_molecule,1)
-SCM
-Lyric_extender::brew_molecule (SCM smob)
+MAKE_SCHEME_CALLBACK (Lyric_extender, print, 1);
+SCM
+Lyric_extender::print (SCM smob)
{
- Spanner *me = unsmob_spanner (smob);
- Item *l = me->get_bound (LEFT);
- Item *r = me->get_bound (RIGHT);
- Grob *common = l->common_refpoint (r, X_AXIS);
-
- Real left_point = l->extent (common, X_AXIS)[RIGHT];
-
- Real sl = me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
-
-
- /*
- It seems that short extenders are even lengthened to go past the note head, but
- haven't found a pattern in it yet. --hwn 1/1/04
-
- */
- Real right_point = r->extent (common, X_AXIS)
- [(Note_head::has_interface (r)) ? RIGHT : LEFT];
-
- Real w = right_point - left_point;
+ Spanner *me = Spanner::unsmob (smob);
+ Item *left_edge = me->get_bound (LEFT);
+ Item *right_text = Item::unsmob (me->get_object ("next"));
- Real h = sl * gh_scm2double (me->get_grob_property ("thickness"));
-
- Molecule 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);
- return mol.smobbed_copy ();
-}
+ Grob *common = left_edge;
-void
-Lyric_extender::set_textitem (Spanner *me, Direction d, Grob *s)
-{
- me->set_bound (d, s);
- me->add_dependency (s);
-}
+ if (right_text)
+ common = common->common_refpoint (right_text, X_AXIS);
+
+ common = common->common_refpoint (me->get_bound (RIGHT), X_AXIS);
+ 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];
+ else if (heads.size ())
+ left_point = heads[0]->extent (common, X_AXIS)[LEFT];
+ else
+ left_point = left_edge->extent (common, X_AXIS)[RIGHT];
+
+ if (isinf (left_point))
+ return SCM_EOL;
+
+ /* It seems that short extenders are even lengthened to go past the
+ 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));
+
+ right_point = min (right_point, me->get_system ()->get_bound (RIGHT)->relative_coordinate (common, X_AXIS));
+
+ if (heads.size ())
+ right_point = max (right_point, heads.back ()->extent (common, X_AXIS)[RIGHT]);
+
+ Real h = sl * robust_scm2double (me->get_property ("thickness"), 0);
+ 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 = 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 = 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));
+ mol.translate_axis (left_point - me->relative_coordinate (common, X_AXIS),
+ X_AXIS);
+ return mol.smobbed_copy ();
+}
+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).",
-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).",
- "thickness");
+ /* properties */
+ "heads "
+ "left-padding "
+ "next "
+ "right-padding "
+ "thickness "
+ );
projects / lilypond.git / blobdiff