[pygtk] Updating image without closing window

[Timo]

DINESHBABU DINAKARABABU schreef:
> I found out that widget.queue_draw() should solve the issue. But, I am 
> still having doubts on how to use the queue_draw() method.
> It would be great if someone could let me know on how to use the 
> method in my 'expose' function and bind it to the "expose_event". My 
> expose function is defined as follows:
>
> def expose (da, event, pixbuf):
>  ctx = da.window.cairo_create()
>  ctx.set_source_pixbuf(pixbuf,0,0)
>  ctx.paint()
>  ctx.stroke()
Add this line here:
  da.queue_draw()

>
> It would be extremely helpful if someone could guide me in this 
> regard. I really appreciate the help.
>
> Thanks
>
> On Tue, Aug 4, 2009 at 10:48 AM, DINESHBABU DINAKARABABU 
> <dinesh243 at gmail.com <mailto:dinesh243 at gmail.com>> wrote:
>
>     Hi all,
>
>     I am writing a program to continuously display full screen images
>     after getting the raw image data from a remote machine. (Doing it
>     using sockets). It would be really helpful if any one of you could
>     help me out in solving the issue as I am pretty new to Python and
>     PyGTK.
>
>     I am able to get the first image image on the screen. But, not the
>     remaining images. Is there anyway to display the images
>     successively without actually closing the window? In other words,
>     is it possible to just update the first image with the update of
>     the raw image data?
>
>     My image display code is as below. I stop with the image displays
>     once I receive a flag = 1 from my remote machine.
>     def main():
>      flag = 0
>      while flag == 0:
>         imagedata = conn.recv(1024)
>         flag = conn.recv(2)
>         pixbuf = gtk.gdk.pixbuf_new_from_data(imagedata,
>     gtk.gdk.COLORSPACE_RGB, 0, 8, 480, 320, 1440)
>         imgw=pixbuf.get_width()
>         imgh=pixbuf.get_height()
>         win = gtk.Window()
>         pixmap = gtk.gdk.Pixmap(None, 1, 1, 1)
>         color = gtk.gdk.Color()
>         cursor = gtk.gdk.Cursor(pixmap, pixmap, color, color, 0, 0)
>         gtk.Window.fullscreen(win)
>         win.connect("realize", lambda obj: win.window.set_cursor(cursor))
>         win.connect("key-press-event", key_press_event)
>         win.connect('destroy', gtk.main_quit)
>         win.set_default_size(imgw, imgh)
>         da = gtk.DrawingArea()
>         win.add(da)
>         da.connect('expose_event', expose, pixbuf)
>         win.show_all()
>      gtk.main()
>
>     I would be grateful if any one can give me any suggestions on how
>     to go about solving the problem. I would really appreciate any
>     help. Thanks a lot in advance.
>
>     -- 
>     Cheers
>     DB
>
>
>
>
> -- 
> Cheers
> DB
> ------------------------------------------------------------------------
>
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