On Sat, Sep 13, 2008 at 1:37 PM, Karl Ostmo <kos...@purdue.edu> wrote:
> Does anyone know what is wrong with my usage of scroll_to_cell( ) ? When I
> run the program below, after I click on a row and scroll such that it is out
> of view, I would expect that when I click on the "Scroll to highlighted row"
> button that the row would be brought back into view.
>
> Thanks,
> Karl
>
> #!/usr/bin/python
>
> from pygtk import require
> require('2.0')
> import gtk, gobject
>
> class TreeviewTest(gtk.Window):
> def __init__(self):
> gtk.Window.__init__( self, gtk.WINDOW_TOPLEVEL )
> self.connect("destroy", self.destroy)
>
> vbox = gtk.VBox(False, 5)
> self.add( vbox )
>
> button = gtk.Button("Scroll to highlighted row")
> button.connect("clicked", self.cb_scroll)
> vbox.pack_start(button, False, False)
>
> self.tv = gtk.TreeView( gtk.TreeStore(gobject.TYPE_STRING,
> gobject.TYPE_STRING) )
>
> for i, colname in enumerate(["Index", "Name"]):
> self.tv.append_column( gtk.TreeViewColumn(colname,
> gtk.CellRendererText(), text=i) )
>
> for i in range(20):
> self.tv.get_model().append(None, row=(str(i), "Foo"))
>
> scrolled_window = gtk.ScrolledWindow()
> scrolled_window.add_with_viewport(self.tv)
> vbox.pack_start(scrolled_window, True, True)
>
> self.show_all()
>
> def cb_scroll(self, widget):
> selection = self.tv.get_selection()
> tm, tree_iter = selection.get_selected()
> path = tm.get_path(tree_iter)
> print path
> self.tv.scroll_to_cell(path)
> # gobject.idle_add(self.tv.scroll_to_cell, path) # This doesn't
> work either
>
> def destroy(self, widget, data=None):
> gtk.main_quit()
>
> if __name__ == "__main__":
> application = TreeviewTest()
> gtk.main()
>
>
I ran into this problem again recently and finally solved it. Google turned
up my old post, so I will post the resolution in case it helps someone else.
The error in the above code is my use of the "add_with_viewport" method.
Since a treeview has native scrolling capability, I should have used the
"add" method instead (see
http://www.pygtk.org/docs/pygtk/class-gtkscrolledwindow.html#method-gtkscrolledwindow--add-with-viewport).
Making that change to the code above fixes it!
HTH,
Karl
_______________________________________________
pygtk mailing list pygtk@daa.com.au
http://www.daa.com.au/mailman/listinfo/pygtk
Read the PyGTK FAQ: http://faq.pygtk.org/
