Update.

[lilypond.git] / lily / system-start-delimiter-engraver.cc

diff --git a/lily/system-start-delimiter-engraver.cc b/lily/system-start-delimiter-engraver.cc
index 27ee99dc86b22375148e2f4431a1cae7b99432bd..1842ffa6f9d7efa65a9f1c1458e18f23c5fa5f2d 100644 (file)
--- a/lily/system-start-delimiter-engraver.cc
+++ b/lily/system-start-delimiter-engraver.cc
@@ -1,68 +1,59 @@
-/*   
+/*
   system-start-delimiter-engraver.cc -- implement System_start_delimiter_engraver
-  
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 2000--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
 
+  (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
 
 #include "system-start-delimiter.hh"
 #include "engraver.hh"
 #include "staff-symbol.hh"
-#include "group-interface.hh"
+#include "pointer-group-interface.hh"
 #include "paper-column.hh"
-#include "paper-def.hh"
+#include "output-def.hh"
 #include "spanner.hh"
 
 class System_start_delimiter_engraver : public Engraver
 {
 public:
-  VIRTUAL_COPY_CONS (Translator);
-  System_start_delimiter_engraver ();
+  TRANSLATOR_DECLARATIONS (System_start_delimiter_engraver);
 
 protected:
-  Spanner * delim_;
-  virtual void acknowledge_grob (Grob_info);
-  virtual void initialize ();
+  Spanner *delim_;
+  DECLARE_ACKNOWLEDGER (system_start_delimiter);
+  DECLARE_ACKNOWLEDGER (staff_symbol);
+
+  void process_music ();
   virtual void finalize ();
 };
 
-ADD_THIS_TRANSLATOR (System_start_delimiter_engraver);
+void
+System_start_delimiter_engraver::acknowledge_staff_symbol (Grob_info inf)
+{
+  /*
+    don't add as Axis_group_interface::add_element (delim_, ),
+    because that would set the parent as well */
 
+  Pointer_group_interface::add_grob (delim_, ly_symbol2scm ("elements"), inf.grob ());
+}
 void
-System_start_delimiter_engraver::acknowledge_grob (Grob_info inf)
+System_start_delimiter_engraver::acknowledge_system_start_delimiter (Grob_info inf)
 {
-  if (Staff_symbol::has_interface (inf.elem_l_))
-    {
-      /*
-       don't add as Axis_group_interface::add_element (delim_,),
-       because that would set the parent as well */
-         
-      Pointer_group_interface::add_element (delim_, "elements", inf.elem_l_);
-    }
-  else if (System_start_delimiter::has_interface (inf.elem_l_))
-    {
-      SCM gl = inf.elem_l_->get_grob_property ("glyph");
-      SCM my_gl = delim_->get_grob_property ("glyph");
+  SCM gl = inf.grob ()->get_property ("glyph");
+  SCM my_gl = delim_->get_property ("glyph");
 
-      /*
-       UGH UGH
-       */
-      if (gh_symbol_p (gl) && gl  == ly_symbol2scm ("brace")
-         && gh_symbol_p (my_gl) && my_gl == ly_symbol2scm ("bracket"))
-       inf.elem_l_->translate_axis (-1.0, X_AXIS); // ugh
-      else if (gh_symbol_p (gl) && gl  == ly_symbol2scm ("bracket")
-              && gh_symbol_p (my_gl) && my_gl == ly_symbol2scm ("bracket"))
-       {
-         inf.elem_l_->translate_axis ( -0.8, X_AXIS); // ugh
-          inf.elem_l_->set_grob_property ("arch-height",
-         gh_double2scm(gh_scm2double(inf.elem_l_->get_grob_property
-                                     ("arch-height"))+0.5));
-        }
+  /*
+    UGH UGH
+  */
+  if (scm_is_string (gl) && ly_is_equal (gl, scm_makfrom0str ("brace"))
+      && scm_is_string (my_gl) && ly_is_equal (my_gl, scm_makfrom0str ("bracket")))
+    inf.grob ()->translate_axis (-0.8, X_AXIS); // ugh
+  else if (scm_is_string (gl) && ly_is_equal (gl, scm_makfrom0str ("bracket"))
+          && scm_is_string (my_gl) && ly_is_equal (my_gl, scm_makfrom0str ("bracket")))
+    {
+      inf.grob ()->translate_axis (-0.8, X_AXIS); // ugh
     }
-
 }
 
 System_start_delimiter_engraver::System_start_delimiter_engraver ()
@@ -71,20 +62,32 @@ System_start_delimiter_engraver::System_start_delimiter_engraver ()
 }
 
 void
-System_start_delimiter_engraver::initialize ()
+System_start_delimiter_engraver::process_music ()
 {
-  delim_ = new Spanner (get_property ("SystemStartDelimiter"));
-
-  delim_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
-
+  if (!delim_)
+    {
+      SCM delim_name = get_property ("systemStartDelimiter");
+      delim_ = make_spanner_from_properties (this, delim_name, SCM_EOL,
+                                            ly_symbol2string (delim_name).to_str0 ());
 
-  announce_grob (delim_,0);
+      delim_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
+    }
 }
-
 void
 System_start_delimiter_engraver::finalize ()
 {
-  delim_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
-  typeset_grob (delim_);
+  if (delim_)
+    delim_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
 }
 
+#include "translator.icc"
+
+ADD_ACKNOWLEDGER (System_start_delimiter_engraver, system_start_delimiter);
+ADD_ACKNOWLEDGER (System_start_delimiter_engraver, staff_symbol);
+
+ADD_TRANSLATOR (System_start_delimiter_engraver,
+               /* doc */ "Creates a system start delimiter (ie. SystemStart@{Bar, Brace, Bracket@} spanner",
+               /* create */ "SystemStartBar SystemStartBrace SystemStartBracket",
+               /* accept */ "",
+               /* read */ "systemStartDelimiter",
+               /* write */ "");