[pygtk] Updating image without closing window

[DINESHBABU DINAKARABABU]

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()

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> 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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