[ltp] middle mouse button and trackpoint scrolling: combining the two in xorg.conf

[Richard Neill]

Andrey Kislyuk wrote:
> "EmulateWheel" in xorg.conf enables scrolling with the trackpoint when 
> the middle button is depressed. However, I haven't been able to make the 
> middle button down+up event work as a middle button keypress when the 
> mouse is not moving. I know there are "EmulateWheelButton" and 
> "EmulateWheelButtonTimeout" options, but they don't work for me.
> 
> So, any accounts of getting it working in Xorg 6.8, and how does your 
> xorg.conf look in that case? Does it work in Xorg 7, and what's the 
> syntax there?
> 

Dear Andrey,

Here's what I have. I'm using

a)Middle button (tap) = middle click (paste)

b)Middle button (press and hold) + drag pointer  = vertical scroll

c)Middle button (press and hold) + drag pointer  = horizontal scroll

My mouse section of Xorg.conf looks like this:
(NOTE: The old thinkpads (A22p) use psaux - you may need a different 
mouse device).

-----------------------------------------------
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "PS/2"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "on"       #Button 1+3 => emulated middle
				    #button
Option "Emulate3Timeout" "50"
Option "EmulateWheel" "on"          #Button 2 => emulated scroll wheel.
Option "EmulateWheelButton" "2"

# Option "EmulateWheelTimeout" "200"  #If button 2 is pressed for less
				      #than this time, then the original
				      #button-2 press will pass through.
				      #Otherwise, we get emulated
				      #scroll. The default timeout is
				      #200, and any other setting seems
				      #to be ignored!

Option "YAxisMapping" "4 5"           #EmulatedWheel 
vertical/horizontal 				      #pointer motion causes fake button
				      #4,5 or 6,7 presses.
Option "XAxisMapping" "6 7"           #Map these fake presses to
				      #vertical and horizontal scroll
				      #respectively.
Option "ZAxisMapping" "10 11"         #Map this out of the way, or the
				      #default (6,7) will break emulated
				      #scroll.
------------------------------------------------------------------------


Note: there was a bug in X "EmulateWheelTimeout doesn't do anything"
which I filed here: https://bugs.freedesktop.org/show_bug.cgi?id=4291 
       Fixed in Xorg CVS as of about October.

Best wishes,

Richard