[pygtk] Scrolling with no scrollbars

[Thorsten Wilms]

On Mon, 2008-04-21 at 14:16 -0700, John Finlay wrote:
>   
> Try some larger values for the upper and step, etc. These aren't limited 
> to 0-1.0. I suspect that the range values is lines and characters.

I thought it wouldn't matter if I define the range ...
But indeed, with larger values, adj.set_value() does have an effect.

In the version where placed the textview in a scrolledwindow, adj.upper
returns 204.0. But any value I set below to including 204.0 only scrolls
the view a few line, it doesn't even come close to the end.
What I also don't get at all: adj.page_size gives me 0.0.

I'm trying to do this in main, to get the basic concept of scrolling a
textview, before seeing how I can connect my special scrollbar:

def main():
	window = gtk.Window()
	hbox = gtk.HBox(homogeneous=False, spacing=0)
	
	textview = gtk.TextView()
	textview.set_editable(False)
	textfile = open("demo_popup_scrollbar_20.py", "r")
	buffer = textview.get_buffer()
	buffer.set_text(textfile.read())
	
	view = gtk.ScrolledWindow(None, None)
	view.set_policy(gtk.POLICY_NEVER, gtk.POLICY_NEVER)
	view.set_shadow_type(gtk.SHADOW_NONE)
	view.add(textview)
	
	scroller = PopupScroller()

	# Layout
	window.add(hbox)
	hbox.pack_start(view, True, True)
	hbox.pack_start(scroller, False, False)
	scroller.set_size_request(16, 200)
	view.set_size_request(400, 200)
	#window.resize(200, 300)

	adj = view.get_vadjustment()
	# value, lower, upper, step_incr, page_incr, page_size
	print adj.value
	print adj.lower
	print adj.upper
	print adj.step_increment
	print adj.page_increment
	print adj.page_size
	view.set_vadjustment(adj)
	adj.set_value(180.0)
	print adj.value

	
	# Connect	
	window.connect("destroy", gtk.main_quit)
	
	window.realize()
	window.show_all()
	
	gtk.main()

Thanks!

-- 
Thorsten Wilms

thorwil's design for free software:
http://thorwil.wordpress.com/