(DynamicLineSpanner): Add

[lilypond.git] / lily / hairpin.cc

diff --git a/lily/hairpin.cc b/lily/hairpin.cc
index e00283992465ece067cfd5be7d97faff2998624f..7a817f2364a738631ddff877415d475fb7b1c951 100644 (file)
--- a/lily/hairpin.cc
+++ b/lily/hairpin.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 #include "hairpin.hh"
@@ -17,15 +17,38 @@
 #include "warn.hh"
 #include "paper-column.hh"
 #include "lookup.hh"
-#include "text-item.hh"
+#include "text-interface.hh"
+#include "pointer-group-interface.hh"
+
+MAKE_SCHEME_CALLBACK (Hairpin, after_line_breaking, 1);
+SCM
+Hairpin::after_line_breaking (SCM smob)
+{
+  Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
+
+  Drul_array<bool> broken;
+  Drul_array<Item *> bounds;
+  Direction d = LEFT;
+  do
+    {
+      bounds[d] = me->get_bound (d);
+      broken[d] = bounds[d]->break_status_dir () != CENTER;
+    }
+  while (flip (&d) != LEFT);
+
+  if (broken[LEFT]
+      && ly_is_equal (bounds[RIGHT]->get_column ()->get_property ("when"),
+                     bounds[LEFT]->get_property ("when")))
+    me->suicide ();
+  return SCM_UNSPECIFIED;
+}
 
 MAKE_SCHEME_CALLBACK (Hairpin, print, 1);
 
 SCM
-Hairpin::print (SCM smob) 
+Hairpin::print (SCM smob)
 {
-  Grob *me = unsmob_grob (smob);
-  Spanner *spanner = dynamic_cast<Spanner*> (me);
+  Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
 
   SCM s = me->get_property ("grow-direction");
   if (!is_direction (s))
@@ -33,23 +56,23 @@ Hairpin::print (SCM smob)
       me->suicide ();
       return SCM_EOL;
     }
-  
+
   Direction grow_dir = to_dir (s);
   Real padding = robust_scm2double (me->get_property ("bound-padding"), 0.5);
 
   Drul_array<bool> broken;
-  Drul_array<Item*> bounds ;
+  Drul_array<Item *> bounds;
   Direction d = LEFT;
   do
     {
-      bounds[d] = spanner->get_bound (d);
+      bounds[d] = me->get_bound (d);
       broken[d] = bounds[d]->break_status_dir () != CENTER;
     }
   while (flip (&d) != LEFT);
 
   Grob *common = bounds[LEFT]->common_refpoint (bounds[RIGHT], X_AXIS);
-  Drul_array<Real> x_points ;
-  
+  Drul_array<Real> x_points;
+
   do
     {
       Item *b = bounds[d];
@@ -57,7 +80,7 @@ Hairpin::print (SCM smob)
       if (broken [d])
        {
          if (d == LEFT)
-           x_points[d] = b->extent (common,X_AXIS)[RIGHT] ;
+           x_points[d] = b->extent (common, X_AXIS)[RIGHT];
        }
       else
        {
@@ -65,41 +88,40 @@ Hairpin::print (SCM smob)
            {
              Interval e = b->extent (common, X_AXIS);
              if (!e.is_empty ())
-               x_points[d] = e[-d] - d*padding;
+               x_points[d] = e[-d] - d * padding;
            }
          else
            {
              bool neighbor_found = false;
-             for (SCM  adj = me->get_property ("adjacent-hairpins");
-                  scm_is_pair (adj); adj = scm_cdr (adj))
+             extract_grob_set (me, "adjacent-hairpins", pins);
+             for (int i = 0; i < pins.size (); i++)
                {
                  /*
                    FIXME: this will fuck up in case of polyphonic
                    notes in other voices. Need to look at note-columns
                    in the current staff/voice.
                  */
-                 
-                 Spanner *pin = unsmob_spanner (scm_car (adj));
+
+                 Spanner *pin = dynamic_cast<Spanner *> (pins[i]);
                  if (pin
-                     && (pin->get_bound (LEFT)->get_column() == b->get_column ()
-                         || pin->get_bound (RIGHT)->get_column() == b->get_column() ))
-                   neighbor_found = true; 
+                     && (pin->get_bound (LEFT)->get_column () == b->get_column ()
+                         || pin->get_bound (RIGHT)->get_column () == b->get_column ()))
+                   neighbor_found = true;
                }
-             
+
              /*
                If we're hung on a paper column, that means we're not
                adjacent to a text-dynamic, and we may move closer. We
                make the padding a little smaller, here.
              */
              Interval e = robust_relative_extent (b, common, X_AXIS);
-             x_points[d] =
-               neighbor_found ? e.center() - d * padding / 3 : e[d];
+             x_points[d]
+               = neighbor_found ? e.center () - d * padding / 3 : e[d];
            }
        }
     }
   while (flip (&d) != LEFT);
 
-
   Real width = x_points[RIGHT] - x_points[LEFT];
   if (width < 0)
     {
@@ -116,11 +138,11 @@ Hairpin::print (SCM smob)
   if (grow_dir < 0)
     {
       starth = height;
-      endh = continued ? height/2 : 0.0;
+      endh = continued ? height / 2 : 0.0;
     }
   else
     {
-      starth = continued ? height/2 : 0.0;
+      starth = continued ? height / 2 : 0.0;
       endh = height;
     }
 
@@ -129,7 +151,7 @@ Hairpin::print (SCM smob)
   */
 
   Stencil mol;
-  mol  = Line_interface::line (me, Offset (0, starth), Offset (width, endh));
+  mol = Line_interface::line (me, Offset (0, starth), Offset (width, endh));
   mol.add_stencil (Line_interface::line (me,
                                         Offset (0, -starth),
                                         Offset (width, -endh)));
@@ -140,9 +162,11 @@ Hairpin::print (SCM smob)
   return mol.smobbed_copy ();
 }
 
-
-
 ADD_INTERFACE (Hairpin, "hairpin-interface",
-  "A hairpin (de)crescendo.",
-  "grow-direction height bound-padding adjacent-hairpins");
+              "A hairpin crescendo/decrescendo.",
+              "adjacent-hairpins "
+              "bound-padding "
+              "grow-direction "
+              "height "
+              );