[pygtk] Horizontal scrollbars not disappearing

[John Finlay]

Andrew Conkling wrote:
> Hello all,
> I've been having a spot of trouble in my own program with horizontal
> scrollbars not disappearing when my TreeView is empty or contains
> narrow enough items to show on-screen.  Thinking that I must have set
> something funky in the properties or in Glade, I decided to do a
> simple program to try to reproduce.  Sure enough, it did the same
> thing.  Of course, it's possible that I'm still messing something up,
> but at least this one's easier to read through. :)
>
> Attached is my source; any ideas would be much appreciated.  To reproduce:
> 1. Click on the "Long List" button to load wide data.
> 2. Click on the "Short List" button to clear the list and load narrow data.
> 3. The horizontal scrollbar should disappear at this point, but doesn't.
>
> Cheers,
> Andrew
>
> --
> http://aconkling.blogspot.com
>   
> ------------------------------------------------------------------------
>
> #!/usr/bin/env python
> import gtk
>
> class AdjustmentWindow:
>
> 	def __init__(self):
> 		self.smalllist = ['A', 'List', 'of', 'short', 'data']
> 		self.largelist = ['This list has much wider rows.', 'Notice how the horizontal scrollbar appears.', 'This scrollbar should go away when we reload the short list.']
> 		self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
> 		self.window.connect('delete_event', self.delete_event)
> 		self.windowbox = gtk.VBox(False, 0)
> 		self.buttonbox = gtk.HBox(True, 0)
> 		
> 		self.smalllistbutton = gtk.Button('Small List')
> 		self.smalllistbutton.connect('clicked', self.populate, self.smalllist)
> 		self.largelistbutton = gtk.Button('Large List')
> 		self.largelistbutton.connect('clicked', self.populate, self.largelist)
> 		
> 		self.scrollwindow = gtk.ScrolledWindow()
> 		self.scrollwindow.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
> 		self.scrollwindow.set_size_request(200,200)
> 		
> 		self.listdata = gtk.ListStore(str)
> 		self.listview = gtk.TreeView(self.listdata)
> 		self.listcell = gtk.CellRendererText()
> 		self.listcolumn = gtk.TreeViewColumn('List', self.listcell, markup=0)
> 		self.listview.append_column(self.listcolumn)
> 		
> 		self.buttonbox.pack_start(self.smalllistbutton)
> 		self.buttonbox.pack_start(self.largelistbutton)
> 		self.windowbox.pack_start(self.buttonbox, False)
> 		self.scrollwindow.add(self.listview)
> 		self.windowbox.pack_start(self.scrollwindow)
> 		self.window.add(self.windowbox)
> 		self.window.show_all()
> 		
> 	def populate(self, widget, list):
> 		self.listdata.clear()
> 		for row in list:
> 			self.listdata.append([row])
> 	
> 	def delete_event(self, widget, event, data=None):
> 		gtk.main_quit()
> 		return False
> 		
> def main():
> 	gtk.main()
>
> if __name__ == "__main__":
> 	window = AdjustmentWindow()
> 	main()
>   
Try setting the TreeViewColumn sizing to gtk.TREE_VIEW_COLUMN_AUTOSIZE 
using set_sizing()

John