I have a treeview-widget inside a ScrolledWindow, which is populated during runtime. I want the ScrolledWindow to auto-scroll to the end of the list. I "solved" the problem, by adjusting the vadjustment of the ScrolledWindow, everytime a row is inserted into the treeview. e.g:
if new_line_in_row:
adj = self.scrolled_window.get_vadjustment()
adj.set_value( adj.upper - adj.page_size )
If i run the code in an interactive ipython session and set the value by myself, everything works as expected.
If i run the code with the default python interpreter, the auto-scroll doesn't work all the time. I debugged the code and the problem seems be, that the adjustment values have some kind of "lag" and are only changed after some period of time.
My question is: how do I scroll, reliably, to maximum position of the ScrolledWindow? is a special signal generated which i can use? or is there a better way to set the adjustment-value?
After widening my search-radius, i found a ruby-related answer. since the problem is gtk-related, it should be able to be solved in any language like this:
you connect the widget which changes, in my case the treeview, with gtk.widget's 'size-allocate' signal and set the gtk.scrolledwindow value to "upper - page_size". example:
self.treeview.connect('size-allocate', self.treeview_changed)
...
def treeview_changed(self, widget, event, data=None):
adj = self.scrolled_window.get_vadjustment()
adj.set_value( adj.upper - adj.page_size )
link to the original post at ruby-forum.com: