How to create an floating device in Xorg input driver?

[Benjamin Tissoires]

Hi,

If I understand correctly, you are trying to work with the patches I 
submitted, nearly a year ago.

First, I would just say that the work concerning this branch of evdev is 
not maintained as it has a lot of problems (limit of the maximum count 
of contact, etc).

Multitouch will be available with XInput 2.1.

My first Idea was to create floating devices, but I encountered a bug I 
did not have the time to patch. If the driver creates a floating device, 
and you attach this device to a master one, I had trouble transferring 
the events. That's why I did not created floating devices.

BTW, if want to give it a test, you can just uncomment the line:

EvdevReplaceOption(input_options, "SendCoreEvents","off");

before calling NewInputDeviceRequest.

Cheers,
Benjamin

Le 28/10/2010 10:42, Park Sung-Jin a écrit :
> Hi,
>
> Is there any one who knows how to create floting device in Xorg input driver ?
>
> I'm writing an Xorg multitouch driver based on
> xf86-input-evdev-multitouch driver.
> In the driver, sub devices for multiple fingers will be created using
> NewInputDeviceReuqest()
> and will be removed using DeleteInputDeviceRequest().
> If a device property was set by multitouch daemon application, the sub
> devices will be created newly and will be removed.
> For example, commands for doing that are : # multitouchctl 3
> If the sub devices are created, then multitouch daemon gets a
> XI_HierarchyChanged event, and set them as floating slaves
> using XIChangeHierarchy() function.
>
> What I want to do is creating the sub devices as floating slaves in
> evdev-multitouch driver.
> Is there any one who knows how to create floting device in Xorg input driver ?
>
> Thanks,
> Sung-Jin Park
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