https://bugs.freedesktop.org/show_bug.cgi?id=49438

             Bug #: 49438
           Summary: drawing layer doesn't paint thin borders in Writer if
                    anti-aliasing disabled
    Classification: Unclassified
           Product: LibreOffice
           Version: LibO Master
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: medium
         Component: Libreoffice
        AssignedTo: [email protected]
        ReportedBy: [email protected]
                CC: [email protected], [email protected]


1. disable anti-aliasing
   Tools->Options->LibreOffice->View, uncheck "Use Anti-Aliasing"
2. new writer document
3. Table->Insert->Table, check "border" checkbox
4. table is difficult to see because no borders are displayed on 100% zoom

this bug is a regression from the fix for bug 33634,
this commit changed the hairline predicates so it does
not ever return true for any Writer border, which have
a minimum width of 1 Twip:

http://cgit.freedesktop.org/libreoffice/core/commit/?id=2c91cb08d65cd35fa8ef6eaca3677aa82fb58cbe

so while with anti-aliasing there doesn't seem to be much
difference whether thin borders are drawn as hairlines or not,
the non-anti-aliased drawing is very sensitive to getting
it right.

afaik drawing layer uses twips in Writer and 1/100mm in other
applications; probably need some way to make the predicate
dependent on the application.

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