Mouse Wheel Support in Wayland

[Tiago Vignatti]

Hi Yan,

On 05/10/2012 10:07 AM, yan.wang at linux.intel.com wrote:
>    I am not sure whether mouse wheel event is supported in current Weston?
> I add checking of BTN_SIDE/BTN_EXTRA in input button callback but no
> response. It may be more convenient to browsing web content if
> supporting mouse wheel scrolling.

I'm not sure why you're checking for BTN_SIDE/BTN_EXTRA.

We do have support for mouse wheel though and we call it "axis", in 
principle. You can check if your app is getting those events setting 
WAYLAND_DEBUG=1 and a stream like "wl_input_device at 6.axis(903960155, 0, 
1)" in getting there. Then you'll need to add an input listener to your 
app (wl_input_device_add_listener) and write a handler for axis types.

Tiago