X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ffont-size-engraver.cc;h=9cb0397b7e4fb25b2b50eb5ac4908e902f381f7b;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=2873636a53f0011f837aaf6e2072de602730d957;p=lilypond.git

diff --git a/lily/font-size-engraver.cc b/lily/font-size-engraver.cc
index e69de29bb2..9cb0397b7e 100644
--- a/lily/font-size-engraver.cc
+++ b/lily/font-size-engraver.cc
@@ -0,0 +1,66 @@
+/*
+  font-size-engraver.cc -- implement Font_size_engraver
+
+  source file of the GNU LilyPond music typesetter
+
+  (c) 2001--2008  Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
+#include "grob.hh"
+#include "engraver.hh"
+
+class Font_size_engraver : public Engraver
+{
+
+  TRANSLATOR_DECLARATIONS (Font_size_engraver);
+protected:
+  DECLARE_ACKNOWLEDGER (font);
+  void process_music ();
+  Real size;
+private:
+};
+
+Font_size_engraver::Font_size_engraver ()
+{
+  size = 0.0;
+}
+
+void
+Font_size_engraver::process_music ()
+{
+  size = robust_scm2double (get_property ("fontSize"), 0.0);
+}
+
+void
+Font_size_engraver::acknowledge_font (Grob_info gi)
+{
+  /*
+    We only want to process a grob once.
+  */
+  if (!size)
+    return;
+
+  if (gi.context () != context ())
+    return;
+
+  Real font_size = size
+    + robust_scm2double (gi.grob ()->get_property ("font-size"), 0);
+  gi.grob ()->set_property ("font-size", scm_from_double (font_size));
+}
+
+#include "translator.icc"
+
+ADD_ACKNOWLEDGER (Font_size_engraver, font);
+ADD_TRANSLATOR (Font_size_engraver,
+		/* doc */
+		"Put @code{fontSize} into @code{font-size} grob property.",
+
+		/* create */
+		"",
+
+		/* read */
+		"fontSize ",
+
+		/* write */
+		""
+		);