From b8b635a078699b0d6dd36348f0324d192fec95ac Mon Sep 17 00:00:00 2001
From: jsancho <devnull@localhost>
Date: Fri, 16 Mar 2012 10:25:29 +0000
Subject: [PATCH] Storing original font size.

---
 src/ftgl.c    | 18 ++++++++++++++++++
 src/video.scm |  6 +++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/ftgl.c b/src/ftgl.c
index 57fbbf8..ca39ad9 100644
--- a/src/ftgl.c
+++ b/src/ftgl.c
@@ -57,6 +57,16 @@ get_font_address (SCM font_smob)
   return font->font_address;
 }
 
+SCM
+get_font_size (SCM font_smob)
+{
+  struct font *font;
+
+  scm_assert_smob_type (font_tag, font_smob);
+  font = (struct font *) SCM_SMOB_DATA (font_smob);
+  return scm_from_int (font->size);
+}
+
 SCM
 mark_font (SCM font_smob)
 {
@@ -113,6 +123,12 @@ gacela_ftglSetFontFaceSize (SCM font, SCM size, SCM res)
   return scm_from_int (ftglSetFontFaceSize (get_font_address (font), scm_to_int (size), scm_to_int (res)));
 }
 
+SCM
+gacela_ftglGetFontFaceSize (SCM font)
+{
+  return scm_from_int (ftglGetFontFaceSize (get_font_address (font)));
+}
+
 SCM
 gacela_ftglSetFontCharMap (SCM font, SCM encoding)
 {
@@ -135,12 +151,14 @@ init_gacela_ftgl (void *data)
   scm_set_smob_free (font_tag, free_font);
   scm_set_smob_print (font_tag, print_font);
   //  scm_set_smob_equalp (surface_tag, equalp_surface);
+  scm_c_define_gsubr ("font-size", 1, 0, 0, get_font_size);
 
   scm_c_define ("ft_encoding_unicode", scm_from_int (ft_encoding_unicode));
   scm_c_define ("FTGL_RENDER_ALL", scm_from_int (FTGL_RENDER_ALL));
 
   scm_c_define_gsubr ("ftglCreateTextureFont", 2, 0, 0, gacela_ftglCreateTextureFont);
   scm_c_define_gsubr ("ftglSetFontFaceSize", 3, 0, 0, gacela_ftglSetFontFaceSize);
+  scm_c_define_gsubr ("ftglGetFontFaceSize", 1, 0, 0, gacela_ftglGetFontFaceSize);
   scm_c_define_gsubr ("ftglSetFontCharMap", 2, 0, 0, gacela_ftglSetFontCharMap);
   scm_c_define_gsubr ("ftglRenderFont", 3, 0, 0, gacela_ftglRenderFont);
 }
diff --git a/src/video.scm b/src/video.scm
index 5a5ef2b..726694a 100644
--- a/src/video.scm
+++ b/src/video.scm
@@ -408,5 +408,9 @@
     font))
 
 (define* (render-text text font #:key (size #f))
-  (cond (size (ftglSetFontFaceSize font size 72)))
+  (cond (size
+	 (cond ((not (= (ftglGetFontFaceSize font) size))
+		(ftglSetFontFaceSize font size 72))))
+	((not (= (ftglGetFontFaceSize font) (font-size font)))
+	 (ftglSetFontFaceSize font (font-size font) 72)))
   (ftglRenderFont font text FTGL_RENDER_ALL))
-- 
2.39.2