Show values of bars in selected row

Change-Id: I18fbdcb05e3c95c20c96b426bf93e85657209f34
Reviewed-on: https://gerrit.libreoffice.org/11584
Reviewed-by: Kohei Yoshida <libreoffice@kohei.us>
Tested-by: Kohei Yoshida <libreoffice@kohei.us>