[pygtk] How to make ScrolledWindow as big as it's content?

[Pietro Battiston]

Il giorno lun, 15/02/2010 alle 21.38 +0100, Matthias Geier ha scritto:
> Dear list!
> 
> My question may sound silly (and maybe it is), but let me explain.
> You could say that a ScrolledWindow that is exactly as big as its
> content doesn't make a lot of sense, but I think in my case it does:

http://www.daa.com.au/pipermail/pygtk/2009-August/017372.html
and following. Also see the linked gtk-devel thread.

But in your case (a kiosk), isn't
http://www.pygtk.org/docs/pygtk/class-gtkwindow.html#method-gtkwindow--maximize
enough?! Or even fullscreen?!

Pietro


> 
> I made a GUI using Glade and want to show it in a kind of "kiosk
> mode", i.e. I want to run it in fullscreen mode with all the widgets
> centered on the screen.
> To achieve this, I placed a gtk.Alignment into the main gtk.Window and
> inside of this I put all my other widgets.
> This worked well until I placed a gtk.ScrolledWindow somewhere inside.
> 
> The reason for this is that I wanted to run the GUI on different
> screen resolutions. On large screens, the Scrolledwindow should show
> all contents and on small screens there should be scrollbars.
> 
> Therefore, I couldn't set a size request to the ScrolledWindow,
> because this would be either too large for small screens or the other
> way round.
> 
> What do I have to do that the ScrolledWindow shows all its contents on
> large screens but still is scrollable if the toplevel window is very
> small?
> 
> I think this should be logically possible, but I don't know how to
> achieve it with pygtk.
> 
> To illustrate my problem, I created a little test script (see below).
> The buttons are of course only place-holders for my actual widgets.
> In a comment there is one line with a size request. If I un-comment
> that, it looks more or less like I want it to look. The thing is even
> if I did know the exact size of the contents, it would still not be
> scrollable if the window is made very small.
> 
> I hope you understand my problem and maybe you know a solution or have
> some hints for me.
> 
> Thanks in advance,
> Matthias
> 
> #########################################
> #!/usr/bin/env python
> 
> import pygtk
> pygtk.require('2.0')
> import gtk
> 
> class ScrolledWindowTest:
>     def destroy(self, widget):
>         gtk.main_quit()
> 
>     def __init__(self):
>         window = gtk.Window()
> 	window.fullscreen()
>         window.connect("destroy", self.destroy)
>         window.set_title("ScrolledWindow Test")
>         scrolled_window = gtk.ScrolledWindow()
> 	# I would like it to look like with this line:
> 	#scrolled_window.set_size_request(105,205)
>         scrolled_window.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
> 	alignment = gtk.Alignment(0.5, 0.5, 0, 0)
> 	alignment.add(scrolled_window)
>         window.add(alignment)
> 	vbox = gtk.VBox()
>         scrolled_window.add_with_viewport(vbox)
>         for i in range(5):
> 	    button = gtk.ToggleButton("button")
> 	    button.set_size_request(80, 40)
> 	    vbox.pack_start(button, expand=False)
>         window.show_all()
> 
> if __name__ == "__main__":
>     ScrolledWindowTest()
>     gtk.main()
> 
> #########################################
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