[PATCH libinput 5/6] touchpad: Don't allow diagonal scrolling

[Hans de Goede]

Hi,

On 05/25/2014 10:34 AM, Jonas Ådahl wrote:
> On Fri, May 23, 2014 at 04:06:26PM +0200, Hans de Goede wrote:
>> We pin scrolling to the initial direction, so a 2 finger scroll starting
>> in the vertical direction, will from then on only generate vertical scroll
>> events, and the same for horizontal.
>>
>> But if the first 2 finger motion is diagonal, then we go into a diagonal
>> scrolling mode where we post both horizontal and vertical scrolling events.
>>
>> This is inconsistent, if we want to allow both at the same time (which we
>> don;t), we should always allow both, not only when the first motion is
>> diagonal.
> 
> Is this really the case? Personally I expect to be able to scroll both
> horizontally and vertically at the same time, for example for scrolling
> around in a large photograph, and this is already how it works with the
> current synaptics driver in X.

Since Peter did the original lock scrolling to one direction bits (I think),
I'll let answering this up to Peter.

Regards,

Hans