read font settings on readsettings event

frontend/ui/reader/readerfont.lua

@@ -26,21 +26,24 @@ ReaderFont = InputContainer:new{
 }
 
 function ReaderFont:init()
-	self.font_face = self.ui.doc_settings:readSetting("font_face")
+end
+
+function ReaderFont:onSetDimensions(dimen)
+	self.dimen = dimen
+end
+
+function ReaderFont:onReadSettings(config)
+	self.font_face = config:readSetting("font_face")
 	if not self.font_face then 
 		self.font_face = self.ui.document:getFontFace()
 	end
 
-	self.font_size = self.ui.doc_settings:readSetting("font_size")
+	self.font_size = config:readSetting("font_size")
 	if not self.font_size then 
 		self.font_size = self.ui.document:getFontSize()
 	end
 end
 
-function ReaderFont:onSetDimensions(dimen)
-	self.dimen = dimen
-end
-
 function ReaderFont:onShowFontMenu()
 	-- build menu item_table
 	local face_list = cre.getFontFaces()