Miklos Vajna 7c94d7267b tdf#149943 vcl: fix pixelated PDF export and print for a rotated image ...

The bugdoc has a barcode which looks good in Writer, but it's quite
blurry in the PDF export result.

This is a problem since commit dd4a67084853a030bf4b9f1f85d728620e0604a5
(vcl: avoid downscale && upscale in DrawTransformedBitmapEx(),
2019-10-08), where the motivation was to not downscale a bitmap in case
it has a larger amount of pixels but a smaller logic size. This went
wrong here and resulted in a blurry bitmap for a not so small image.

Fix the problem by mostly reverting the above commit, because it's no
longer necessary: 68549e00d5e23aa22bc974a8151d93cd948444b3 (vcl,
BitmapEx transformed draw: special-case simple rotations, 2019-10-10)
already made sure that the rotation case doesn't use scaling from the
transform.

testTdf128630 has been adapted to pass again (after manually verifying
that the bugdoc export result is still OK), now the bad case there
simply produces a smaller bitmap.

Change-Id: Ib28881c129a0cf037a96eecd065e5cadede97051
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/137737
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

2022-08-03 11:11:15 +02:00

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