Hi, Cairo uses floating point values from 0.0 to 1.0 for colors, but apart from that your code should work with Clutter 1.16. For earlier versions you have to put the canvas into an extra actor instead of the stage.
So long
:wq buz
On Thu, Oct 03, 2013 at 10:34:03PM +0200, Alessandro Re wrote:
> Hello,
> I was trying to draw with Cairo on a Content, but nothing shows up. I saw
> some examples (included the one in the reference), but I can not see (what
> I think are) notable differences.
>
> Here's my code, can you please tell me what I am missing?
>
> Thanks!
>
> #!/usr/bin/env python3
>
> import sys
> from gi.repository import Clutter as clu
> import cairo
>
> def quit(*args):
> clu.main_quit()
>
> def draw_something(canvas, ctx, w, h):
> ctx.set_source_rgb(0xff, 0x00, 0xff)
> ctx.set_line_width(3)
> ctx.move_to(0, 0)
> ctx.line_to(w, h)
> ctx.stroke()
> return True
>
> #def invalidate(canvas):
> # canvas.invalidate()
> # return True
>
> if __name__ == '__main__':
> clu.init(sys.argv)
>
> black = clu.Color.new(0x00, 0x00, 0x00, 0xff)
>
> stage = clu.Stage()
> stage.set_color(black)
> stage.set_size(200, 200)
> stage.connect('destroy', quit)
> stage.show()
>
> canvas = clu.Canvas()
> canvas.set_size(200, 200)
> canvas.connect('draw', draw_something)
>
> stage.set_content(canvas)
>
> # clu.threads_add_timeout(0, 1000, invalidate, canvas)
>
> canvas.invalidate()
> clu.main()
>
>
> ~Alessandro
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