[bug #47109] Cairo/Windows: Unexpected DPI may cause font rendering issues

[Ivan Vučica]

Follow-up Comment #1, bug #47109 (project gnustep):

If someone wants to continue looking into fixing this, I've spent a few
minutes trying to track this down completely blindly (i.e. I didn't actually
run any code). 

The number 16 in '16 characters until whitespace appears' _seems_ to come
from:
  http://svn.gna.org/svn/gnustep/libs/gui/trunk/Source/NSLayoutManager.m
method -drawGlyphsForGlyphRange:atPoint: line "#define GBUF_SIZE 16 /* TODO:
tweak */".

Combined with Riccardo's mention that this may be related to DPI, and
following the call to C function GSShowGlyphsWithAdvances() from
  http://svn.gna.org/svn/gnustep/libs/gui/trunk/Source/NSGraphicsContext.m
I'd say the fixer will want to look at
  http://svn.gna.org/svn/gnustep/libs/back/trunk/Source/cairo/CairoGState.m
method -GSShowGlyphsWithAdvances:::, and
  http://svn.gna.org/svn/gnustep/libs/back/trunk/Source/cairo/CairoFontInfo.m
method -drawGlyphs:length:on:.

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