On Thursday 09 July 2009 13:31:10 Jacopo De Simoi wrote: > On Wednesday 08 July 2009 23:49:43 Aaron J. Seigo wrote: > > On Wednesday 08 July 2009, Jacopo De Simoi wrote: > > > On Wednesday 08 July 2009 19:41:30 Aaron J. Seigo wrote: > > > > On Wednesday 08 July 2009, you wrote: > > > > > QPainter from paintEvent.. here is the result: > > > > > http://imagebin.ca/view/TFWmBq.html > > > > > > > > to be clear, the problem we're seeing in that screenshot is what > > > > exactly? > > > > the colouring of the fade out or the positioning of it? > > > > > > The problem is that the dialog itself becomes transparent, and fades into > > > the desktop; it's like there's a hole in the dialog, whereas we would like > > > that just the items become transparent and fade into the background of > > > the > > > dialog, as we manage to have if we let QGV::render paint items on a pixmap > > > and then put a gradient on it before drawing it using the painter... > > > > perhaps you are using the wrong compositing setting when painting? it > > sounds > > like you aren't blending it with the contents but rather doing sth like > > QPainter::CompositionMode_Source? > I'm using destinationIn, basically I copied from your piece of code for the > items, > however I'll check with other CompositionModes Nah, no luck. I believe that the QPainter used to draw Background, items, foreground is the same used to draw the background of the widget, therefore putting 0 alpha would make the dialog as well transparent. Again, It seems that I have to redirect the painter to a pixmap and then blend over it, that's what you do in the resultitem::paint iirc... Any better idea than render(), again?
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