[Urwid] ListBox magically scrolls with mousewheel (but only with a self-written main loop)

[Ian Ward]

Ian Ward wrote:
> Jan-Philip Gehrcke wrote:
>> When I want to resize the screen, i.e. drag and drop an edge of my 
>> terminal window with the mouse, the screen is not redrawn automatically. 
>> It freezes. When I then click into the terminal or press any key, the 
>> screen gets resized and shows changes again. I tried to debug this 
>> myself, but I did not get it.. still do not understand things (like the 
>> alarm system) in main_loop.py :-) Or perhaps I have to add some code to 
>> my main module?
> 
> Nothing for you to add.  The MainLoop's screen resize handling is broken 
> right now, I just need to look into it.
> 

I've put a fix up.  It works in my tests, but it doesn't honour the
resize_wait time yet, which means it spends lots of time redrawing while
you're still dragging the window instead of waiting until you to stop
dragging.  When I have some more time I'll dig a little deeper into the
code to find a nice way to make it work without creating duplication.

Ian