Grab key scrolling

Marco Pesenti Gritti mpg at redhat.com
Tue Apr 17 10:04:57 EDT 2007


On Tue, 2007-04-17 at 09:50 -0400, Eben Eliason wrote:
> > 1 Scroll events can only be horizontal or vertical, you can't move
> > diagonally for example.
> 
> This seems like the biggest issue, as diagonal scrolling is one of the
> main benefits of the grab approach.  Still, I really want something
> mapped to that key.  To clarify, will this even properly generate
> horizontal or vertical events?  Does it really know that left to right
> is different than top to bottom?
> 

The scroll events are simple. They are really mouse ButtonPress events.
Button 4 is up, button 5 is down, button 6 is left and button 7 is
right. In response to these events application scrolls the view by an
arbitrary amount. For gtk apps the amount is specified by the toolkit,
for mozilla it's customizable through preferences.

Marco



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