Web-ja: update introduction

[lilypond.git] / lily / grob-closure.cc

diff --git a/lily/grob-closure.cc b/lily/grob-closure.cc
index c1610e89d635ef699132615c40d6a91071bb0f50..bfafd4c9822e3a7c3f459bfd3c6f9a1ca54d246a 100644 (file)
--- a/lily/grob-closure.cc
+++ b/lily/grob-closure.cc
@@ -1,28 +1,23 @@
 #include "grob.hh"
-#include "simple-closure.hh"
-
-/*
-  UGH : todo -> to different file.
- */
+#include "unpure-pure-container.hh"
+#include "lily-imports.hh"
 
 SCM
 axis_offset_symbol (Axis a)
 {
   return a == X_AXIS
-    ? ly_symbol2scm ("X-offset")
-    : ly_symbol2scm ("Y-offset");
+         ? ly_symbol2scm ("X-offset")
+         : ly_symbol2scm ("Y-offset");
 }
 
 SCM
 axis_parent_positioning (Axis a)
 {
   return (a == X_AXIS)
-    ? Grob::x_parent_positioning_proc
-    : Grob::y_parent_positioning_proc;
+         ? Grob::x_parent_positioning_proc
+         : Grob::y_parent_positioning_proc;
 }
 
-
-
 /*
   Replace
 
@@ -31,31 +26,15 @@ axis_parent_positioning (Axis a)
   by
 
   (+ (PROC GROB) (orig-proc GROB))
-  
 */
 void
 add_offset_callback (Grob *g, SCM proc, Axis a)
 {
-  SCM data = g->get_property_data (axis_offset_symbol (a));
-  if (ly_is_procedure (data))
-    data = ly_make_simple_closure (scm_list_1  (data));
-  else if (is_simple_closure (data))
-    data = simple_closure_expression (data);
-  else if (!scm_is_number (data))
-    g->internal_set_property (axis_offset_symbol (a),
-                             proc);
-  else
-    {
-      SCM plus = ly_lily_module_constant ("+");
-      SCM expr = scm_list_3 (plus,
-                            ly_make_simple_closure (scm_list_1 (proc)),
-                            data);
-      g->internal_set_property (axis_offset_symbol (a),
-                               ly_make_simple_closure (expr));
-    }
+  SCM sym = axis_offset_symbol (a);
+  SCM data = g->get_property_data (sym);
+  g->set_property (sym, Lily::grob_offset_function (proc, data));
 }
 
-
 /*
   replace
 
@@ -63,25 +42,17 @@ add_offset_callback (Grob *g, SCM proc, Axis a)
 
   by
 
-  (PROC GROB (orig-proc GROB)) 
-
+  (PROC GROB (orig-proc GROB))
 */
 void
-chain_offset_callback (Grob *g, SCM proc, Axis a)
+chain_callback (Grob *g, SCM proc, SCM sym)
 {
-  SCM data = g->get_property_data (axis_offset_symbol (a));
+  SCM data = g->get_property_data (sym);
+  g->set_property (sym, Lily::grob_compose_function (proc, data));
+}
 
-  if (ly_is_procedure (data))
-    data = ly_make_simple_closure (scm_list_1  (data));
-  else if (is_simple_closure (data))
-    data = simple_closure_expression (data);
-  else if (!scm_is_number (data))
-    data = scm_from_int (0);
-  
-  SCM expr = scm_list_2 (proc, data);
-  g->internal_set_property (axis_offset_symbol (a),
-                           
-                           // twice: one as a wrapper for grob property routines,
-                           // once for the actual delayed binding. 
-                           ly_make_simple_closure (ly_make_simple_closure (expr)));
+void
+chain_offset_callback (Grob *g, SCM proc, Axis a)
+{
+  chain_callback (g, proc, axis_offset_symbol (a));
 }