add a public interface to load bindata fonts in addition to the built in ones

fontmanager.go

@@ -122,14 +122,26 @@ func (fm *fontManager) loadBuildInFont() error {
 		if err != nil {
 			return err
 		}
+		// Load the font
+		err = fm.loadBinDataFont(string(fontStr), name)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// Load a bindata font
+func (fm *fontManager) loadBinDataFont(fontStr string, fontName string) error {
+
 	// Get the font
-		font, err := parseFontContent(string(fontStr))
+	font, err := parseFontContent(fontStr)
 	if err != nil {
 		return err
 	}
 	// Register the font object in the fontLib
-		fm.fontLib[name] = font
-	}
+	fm.fontLib[fontName] = font
 
 	return nil
 }

render.go

@@ -39,6 +39,11 @@ func (ar *AsciiRender) LoadFont(fontPath string) error {
 	return ar.fontMgr.loadFontList(fontPath)
 }
 
+// LoadBinDataFont loads provided bindata font string
+func (ar *AsciiRender) LoadBinDataFont(fontStr string, fontName string) error {
+	return ar.fontMgr.loadBinDataFont(fontStr, fontName)
+}
+
 // Render renders a string with the default options
 // Calls the RenderOpts method with a new RenderOptions object
 func (ar *AsciiRender) Render(str string) (string, error) {