This allows setting/using DrawModeFlags system-independent (or: renderer-independent). Changing and applying to a PrmitiveRenderer will apply that (if needed) to the target renderer. Change-Id: Id95d018f95d1b2ff065da5e4d05ba385b22cdbb0 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/188704 Reviewed-by: Armin Le Grand <Armin.Le.Grand@me.com> Tested-by: Jenkins