tdf#125550 vcl menu bar / floating window: fix text color

Regression from commit e8d5b8beb5958147235ff955ed38c47b51d860ff
(tdf#113714 vcl menu bar window: avoid flicker, 2019-05-20), the problem
was that a freshly created VirtualDevice doesn't have the default text
color, so we need to initialize that explicitly based on the render
context text color.

Also introduce a BufferDevice to do this initialization, instead of
fixing this in MenuBarWindow::Paint(), then copy&pasting the fix to
MenuFloatingWindow::Paint().

Change-Id: Ib171cd52e7cabe0bc3c639821f558d8303039fe6
Reviewed-on: https://gerrit.libreoffice.org/73269
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins
(cherry picked from commit 42bf893a8479f70d7d8f00e03105ce15e8545f8b)
Reviewed-on: https://gerrit.libreoffice.org/73314
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions