+/*
+ font-size-engraver.cc -- implement Font_size_engraver
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 2001--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+
+ */
+
+#include "grob.hh"
+#include "engraver.hh"
+
+class Font_size_engraver : public Engraver
+{
+
+ TRANSLATOR_DECLARATIONS(Font_size_engraver);
+protected:
+ virtual void acknowledge_grob (Grob_info gi);
+private:
+};
+
+
+Font_size_engraver::Font_size_engraver ()
+{
+
+}
+
+void
+Font_size_engraver::acknowledge_grob (Grob_info gi)
+{
+ SCM sz = get_property ("fontSize");
+
+ /*
+ We only want to process a grob once.
+ */
+ if (gi.origin_trans_->daddy_trans_ != daddy_trans_)
+ return ;
+
+ if (gh_number_p (sz) && gh_scm2double (sz))
+ {
+ Real font_size = gh_scm2double (sz);
+
+ font_size += robust_scm2double (gi.grob_->get_grob_property ("font-size"), 0);
+ gi.grob_->set_grob_property ("font-size", gh_double2scm (font_size));
+ }
+}
+
+
+ENTER_DESCRIPTION(Font_size_engraver,
+/* descr */ "Puts fontSize into font-relative-size grob property.",
+/* creats*/ "",
+/* accepts */ "",
+/* acks */ "font-interface",
+/* reads */ "fontSize",
+/* write */ "");