Python & translucent canvas

Question

I'm looking for a way to draw real translucent lines with pygtk or wxPython, I now this is not possible with TKinter (I like this one because its already there). Also, I already now I can do this using PIL, but I want to draw direct to a canvas and it will be a dinamic content so I think using PIL will be a slow solution (and not elegant). Someone know a way to do this? Or maybe another toolkit that allows me to do this.

To get clear what I want is: If I drew lines with distinct colors that overlaps I need to be able to see both lines with a merged color at the intersection. Something like if the color I choose for the pen have a transparence instead of solid color.

Thanks.

Answer 1

Pretty much all "canvas" libraries have brushes with alpha.

• PyGTK has the gtk.DrawingArea, often used with cairo.
• Cairo can be used with wxPython as well.
• QT has the Graphics View Framework.