ScanlineFormat enum is used to indicate 2 things - scanline format
type and scanline direction (TopDown or BottomUp). This makes it
complex to manipulate with (using bit arithmetics) and hard to use
in general for no benefit, so this commit separates direction out
from the ScanlineFormat into ScanlineDirection enum. ScanlineFormat
is now just a simple enum class (not a bit field).
Change-Id: Iad55d0a4c8c07b71221c2facf7cf6a2d518fec0c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163943
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
6588c30ed4