https://bugs.documentfoundation.org/show_bug.cgi?id=91093
Bug ID: 91093
Summary: EMF with alpha blend bitmap
Product: LibreOffice
Version: 4.1 all versions
Hardware: Other
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: graphics stack
Assignee: [email protected]
Reporter: [email protected]
Created attachment 115334
--> https://bugs.documentfoundation.org/attachment.cgi?id=115334&action=edit
bugdoc (DOCX)
The attached bugdoc contains an embedded OLE object (PDF file). In the
document, the embedded OLE object is displayed as an icon, which is EMF. The
background of the bitmap should be white/transparent, but it is black in
LibreOffice 4.1 and higher. The icon is not displayed at all in earlier
LibreOffice versions, so it is probably not a regression.
The EMF file contains EMR_ALPHABLEND record (AlphaBlend GDI call), and I think
the problem is that transparency is not handled by LibreOffice's bitmap
processing code.
Bug 90539 was similar, but there was possible to use a hack.
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