1 files changed, 42 insertions, 0 deletions
diff --git a/src/font_size.cc b/src/font_size.cc
new file mode 100644
index 0000000..d11ee89
--- /dev/null
+++ b/src/font_size.cc
@@ -0,0 +1,42 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "font_size.h"
+
+using namespace sub;
+
+float
+FontSize::proportional (int screen_height_in_points) const
+{
+	if (_proportional) {
+		return _proportional.get ();
+	}
+
+	return float (_points.get ()) / screen_height_in_points;
+}
+
+int
+FontSize::points (int screen_height_in_points) const
+{
+	if (_points) {
+		return _points.get ();
+	}
+
+	return _proportional.get() * screen_height_in_points;
+}