lyric-extender.cc -- implement Lyric_extender
source file of the GNU LilyPond music typesetter
- (c) 1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys
*/
-#include <math.h>
+#include "lyric-extender.hh"
+
-#include "box.hh"
#include "warn.hh"
#include "lookup.hh"
-#include "stencil.hh"
#include "paper-column.hh"
#include "output-def.hh"
-#include "lyric-extender.hh"
#include "note-head.hh"
-#include "group-interface.hh"
-
-bool
-Lyric_extender::is_visible (Grob *gr)
-{
- Spanner *me = dynamic_cast<Spanner*> (gr);
-
- SCM heads = me->get_property ("heads");
- int il = scm_ilength (heads);
- return il != 0;
-}
+#include "pointer-group-interface.hh"
MAKE_SCHEME_CALLBACK (Lyric_extender, print, 1)
-SCM
-Lyric_extender::print (SCM smob)
+ SCM
+Lyric_extender::print (SCM smob)
{
Spanner *me = unsmob_spanner (smob);
- Item *le = me->get_bound (LEFT);
- Item *ri = me->get_bound (RIGHT);
- Grob *common = le->common_refpoint (ri, X_AXIS);
+ Item *left_edge = me->get_bound (LEFT);
+ Item *right_text = unsmob_item (me->get_object ("next"));
- Real sl = me->get_paper ()->get_dimension (ly_symbol2scm ("linethickness"));
+ Grob *common = left_edge;
- Link_array<Grob> heads (Pointer_group_interface__extract_grobs (me, (Grob*)0,
- "heads"));
+ if (right_text)
+ common = common->common_refpoint (right_text, X_AXIS);
- if (!heads.size () && ri->break_status_dir () == CENTER)
+ common = common->common_refpoint (me->get_bound (RIGHT), X_AXIS);
+ Real sl = me->layout ()->get_dimension (ly_symbol2scm ("linethickness"));
+
+ 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 (le->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
- left_point = le->extent (common, X_AXIS)[RIGHT];
+ 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 = le->extent (common, X_AXIS)[RIGHT];
+ left_point = left_edge->extent (common, X_AXIS)[RIGHT];
if (isinf (left_point))
return SCM_EOL;
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));
- Spanner *orig = dynamic_cast<Spanner*> (me->original_);
- bool last_line = orig
- && (me->get_break_index () == orig->broken_intos_.size () - 2)
- && !Lyric_extender::is_visible (orig->broken_intos_.top ());
-
if (heads.size ())
- right_point = right_point >? heads.top ()->extent (common, X_AXIS)[RIGHT];
+ right_point = max (right_point, heads.top ()->extent (common, X_AXIS)[RIGHT]);
Real h = sl * robust_scm2double (me->get_property ("thickness"), 0);
Real pad = 2* h;
- if (ri->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
- right_point = right_point <? (ri->extent (common, X_AXIS)[LEFT] - pad);
- else if (Note_head::has_interface (ri))
- ;
- else if (!last_line)
- /* run to end of line. */
- right_point = right_point >? (ri->extent (common, X_AXIS)[LEFT] - pad);
-
- if (isinf (right_point))
- {
- programming_error ("Right point of extender not defined?");
- right_point = ri->relative_coordinate (common, X_AXIS);
- }
+ if (right_text)
+ right_point = min (right_point, (robust_relative_extent (right_text, common, X_AXIS)[LEFT] - pad));
- left_point += pad;
+ /* 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] - pad));
+ left_point += pad;
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);
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).",
- "thickness heads");
+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");