release: 1.3.65

[lilypond.git] / lily / span-bar.cc

diff --git a/lily/span-bar.cc b/lily/span-bar.cc
index ac458ad177d0343ae111a6121d53d29ada22a2cd..91ab2a0ab291a43a9a41da542c970af3e5a4f682 100644 (file)
--- a/lily/span-bar.cc
+++ b/lily/span-bar.cc
@@ -12,13 +12,13 @@
 #include "paper-def.hh"
 #include "molecule.hh"
 #include "warn.hh"
+#include "axis-group-interface.hh"
 #include "group-interface.hh"
 
-
 void
 Span_bar::add_bar (Score_element*b)
 {
-  Group_interface gi (this);
+  Pointer_group_interface gi (this);
   gi.add_element (b);
 
   add_dependency (b);
@@ -26,133 +26,105 @@ Span_bar::add_bar (Score_element*b)
 
 
 Interval
-Span_bar::width_callback (Dimension_cache const * c)
+Span_bar::width_callback (Score_element const *se, Axis )
 {
-  Span_bar*  s= dynamic_cast<Span_bar*> (c->element_l ());  
+  Span_bar*  s= dynamic_cast<Span_bar*> ((Score_element*)se);
   String gl = ly_scm2string (s->get_elt_property ("glyph"));
 
-  /*urg.
+  /*
+    urg.
    */
   Molecule m = s->compound_barline (gl, 40 PT);
   
   return m.extent (X_AXIS);
 }
 
-void
-Span_bar::before_line_breaking ()
+GLUE_SCORE_ELEMENT(Span_bar,before_line_breaking);
+SCM
+Span_bar::member_before_line_breaking ()
 {
-  Bar::before_line_breaking ();
+  Bar::member_before_line_breaking ();
   
   evaluate_empty ();
-  
-  //  set_empty (false, Y_AXIS); // a hack to make mark scripts work.
+
+  return SCM_UNDEFINED;
 }
 
-void
-Span_bar::after_line_breaking ()
+GLUE_SCORE_ELEMENT(Span_bar,after_line_breaking);
+SCM
+Span_bar::member_after_line_breaking ()
 {
-  Bar::after_line_breaking ();
-  SCM s = get_elt_property ("collapse-height");
-  if (gh_number_p (s)
-      && get_spanned_interval ().length () < gh_scm2double (s))
-    {
-      set_elt_property ("transparent", SCM_BOOL_T);
-      set_empty (X_AXIS);
-      set_empty (Y_AXIS);   
-    }
-
   Interval i (get_spanned_interval ());
+
+  /*
+    Bar::brew_molecule delivers a barline of y-extent (-h/2,h/2), so
+    we have to translate ourselves to be in the center of the 
+    interval that we span.  */
   translate_axis (i.center (), Y_AXIS);
+  return SCM_UNDEFINED;
 }
 
 void
 Span_bar::evaluate_empty ()
 { 
-  if (!gh_pair_p (get_elt_property ("elements")))
-  {
-    set_elt_property ("transparent", SCM_BOOL_T);
-    set_empty (X_AXIS);
-    set_empty (Y_AXIS);   
-  }
+  if (!gh_pair_p (get_elt_pointer ("elements")))
+    {
+      suicide ();
+    }
   
   SCM gl = get_elt_property ("glyph");
   if (!gh_string_p (gl))
     {
-      set_elt_property ("transparent", SCM_BOOL_T);
-      set_empty (X_AXIS);
-      set_empty (Y_AXIS);   
+      suicide ();
+      return ; 
     }
   else {
     String type_str = ly_scm2string (gl);
+    String orig = type_str;
     if (type_str == "|:") 
-    {
-      type_str= ".|";
-    }
-  else if (type_str== ":|")
-    {
-      type_str= "|.";
-    }
-  else if (type_str== ":|:")
-    {
-      type_str= ".|.";
-    }
+      {
+       type_str= ".|";
+      }
+    else if (type_str== ":|")
+      {
+       type_str= "|.";
+      }
+    else if (type_str== ":|:")
+      {
+       type_str= ".|.";
+      }
+    if (orig != type_str)
+      set_elt_property ("glyph", ly_str02scm (type_str.ch_C()));
   }
-
-  /*
-    uhh. should do something with type_str ?!!
-   */
 }
 
 Interval
 Span_bar::get_spanned_interval () const
 {
-  Interval y_int;
-
-  for (SCM s = get_elt_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
-    {
-      Score_element *bar = unsmob_element ( gh_car (s));
-
-      if (!bar)
-       continue;
-      
-      Score_element*common = common_refpoint (bar, Y_AXIS);
-
-      Interval iv (bar->extent(Y_AXIS));
-      if (!iv.empty_b ())
-       {
-         Real y = bar->relative_coordinate (common, Y_AXIS)  
-           - relative_coordinate (common, Y_AXIS);
-
-         y_int.unite (y + iv);
-       }
-    }
-  
-  return y_int;
+  return Axis_group_interface::group_extent_callback (this, Y_AXIS);  
 }
 
-Interval
-Span_bar::height_callback (Dimension_cache const *c) 
-{
-  Span_bar * s= dynamic_cast<Span_bar*> (c->element_l ()); 
-  return s->get_spanned_interval ();
-}
 
 Real
 Span_bar::get_bar_size () const
 {
-   Interval iv (get_spanned_interval ());
-   if (iv.empty_b ())
-     {
-       programming_error("Huh? My children deflated (FIXME)");
-       iv = Interval (0,0);
-     }
-   return iv.length ();
+  Interval iv (get_spanned_interval ());
+  if (iv.empty_b ())
+    {
+      programming_error("Huh? My children deflated (FIXME)");
+      iv = Interval (0,0);
+    }
+  return iv.length ();
 }
 
-Span_bar::Span_bar ()
+Span_bar::Span_bar (SCM s)
+  : Bar (s)
 {
-  group (this).set_interface ();
-  dim_cache_[X_AXIS]->set_extent_callback (width_callback);
-  dim_cache_[Y_AXIS]->set_extent_callback (height_callback);  
+  Pointer_group_interface(this).set_interface ();
+  set_extent_callback (width_callback, X_AXIS);
+  
+  // dim_cache_[Y_AXIS]->set_extent_callback (Axis_group_interface::group_extent_callback);
+
+  set_extent_callback (0, Y_AXIS);
 }