[Bug 33378] New: measuring/painting strings needs better tests

http://bugs.winehq.org/show_bug.cgi?id=33378

Bug #: 33378
           Summary: measuring/painting strings needs better tests
           Product: Wine
           Version: 1.5.28
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gdiplus
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified
   Regression SHA1: 6ab04040e52465e77558a067309e8a54bdc0f32c

Created attachment 44169
  --> http://bugs.winehq.org/attachment.cgi?id=44169
minimal fix for a clipping problem

This is sort of bug 25717 revisited, in that that a problem, that happened
shortly before it was fixed, has popped up again.

I haven't been checking it in awhile, but today I did, then had to trace it
back to 1.5.26.

After a bisect, it came to commit "gdiplus: GdipMeasureCharacterRanges should
treat empty layout extents as infinite when StringFormatFlagsNoClip is
specified.".
Clipping went broken again, resulting in invisible text.

Minimal fix attached and sent to wine-patches.

As I said, it's the clipping again - without resetting < 0.5 to (1<< 23), 'if
(!(format_flags & StringFormatFlagsNoClip) && scaled_rect.Width != 1 << 23 &&
scaled_rect.Height != 1 << 23)' condition doesn't go into effect.