[MS-EMF] 2.3.2.2 says the RegionData field "MUST be ignored" when
iMode is RGN_COPY, but real EMFs include data with RGN_COPY and
expect the clip to be replaced with the given region (verified
against MS Word reference rendering of test files such as
TestCreatePen.emf and a chart EMF where the colored plot lines
were leaking outside the plot frame). Treat the record like the
Win32 ExtSelectClipRgn API: a non-NULL region with RGN_COPY
replaces the clip, a NULL region (cbRgnData == 0) with RGN_COPY
resets the clip to the default null region.
Add a minimal hand-crafted EMF (TestExtSelectClipRgnCopy.emf) that
draws a (0,0)-(200,200) rectangle through a (50,50)-(150,150)
RGN_COPY clip and asserts the imported metafile wraps the rectangle
in a clip-region mask matching the requested rectangle.
Update existing test expectations to reflect the new clip-region
group/mask wrappers that now appear in the metafile primitive tree
where RGN_COPY data is present (testCreatePen, testPolyPolygon,
testTextMapMode, testEmfPlusSetPageTransform,
testDrawImagePointsWithMetafile, testSine).
Signed-off-by: Andras Timar <andras.timar@collabora.com>
Change-Id: Id123157b64b75d817b4736443eac14804b04bb89
Reviewed-on: https://gerrit.collaboraoffice.com/c/online/+/2206
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
(cherry picked from commit 1c2ff94b6079451a7047a2afb45467d6fe31cb4f)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/205072
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Andras Timar
d271bc432b