Multiple QGraphicsEffects and subclassing

[Spitfire]

What about using QWidget::setMask() on the button to give it a shape instead of funky effect and setting the shadow using a setGraphicsEffect()?

[JonnyJP]

Thanks.

The problem with setMask is the edges aren't anti-aliased and I couldn't work out how to do this otherwise it would seem like the best solution.

I'm currently using a QPainterPath for the masking graphics effect, which masks the inner button and anti-aliases the edges.

Can you use a QPainterPath with setmask?

[Spitfire]

You can use painter path (indirectly) with set mask:

QWidget::setMask( QPainterPath::toFillPolygon().toPolygon() );

QWidget::setMask( QPainterPath::toFillPolygon().toPolygon() );

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But this will result in the same issue - edges will not be antialiased.

As far as I know only way to have aliased edges is to draw them using QPainter.
If you don't want to do that, maybe you could combine both effects into one shadow_and_shape effect?