[Interest] Font over-line control.

[Bill Crocker]

Hello Gang:

I use a QTextDocument to format HTML
for display in a QGraphicsTextItem.
Text can be over-lined with:

     <span style="text-decoration:overline">ABC</span>

Is there any way to control the width
and vertical position of the over-line
line segment?

It looks like the line thickness comes from
font_engine->lineThickness().
Can I create my own font engine by deriving
from my existing font engine and overriding
the lineThickness() function?

I see QAbstractFontEngine but the doc says that
that is for embedded Linux and I am not embedded.

The vertical offset appears to be hard coded at
font_engine->ascent()+1 (which is too bad)
while the underline position comes from the font engine.
See: qtextlayout.cpp

Thanks.

Bill