And introduce GetTextWidth / GetTextHeight variants returning double.
It allows to avoid premature rounding.
At least in one case - testTdf145111_anchor_in_Fontwork - it allowed
to make the test DPI-independent (at least in my testing on Windows,
using 125, 150, and 175% UI scaling).
Change-Id: I973d2c729ec6bb7114b4f99b9027f1ead7c1d061
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166237
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
089398e514