[Bf-committers] Continuous Grab vs Tablet

[Campbell Barton]

Its possible to know the source on each X11 event too, this is one way
we could try get it working better.

On Tue, Nov 3, 2009 at 10:53 AM, Damien Plisson <damien.plisson at yahoo.fr> wrote:
> Hi Matt,
>
> A few ideas on this tablet vs mouse :
>
> You can get tablet information asynchronously with GHOST_GetTabletData.
> And there is a field telling if the tablet is currently used or not
> ( tabletData->Active != GHOST_kTabletModeNone).
>
> Polling this to decide on entering grab mode in the triggering event
> handler (GKEY, transform manipulator, ...) may help ? Or placing this
> check inside the "Enter Warp" function ?
>
> Otherwise, at least on cocoa (I don't know for other platforms), for
> each mouse event, we can get its source (tablet or mouse).
>
> Hope this helps,
>
> Damien
>
> Le 3 nov. 2009 à 08:28, Matt Ebb a écrit :
>
>> Hi,
>>
>> Continuous grab currently does not play well with tablet use, it
>> conflicts as the tablet is trying to set absolute mouse coordinates.
>> This becomes very apparent now it's on by default and causes some
>> pretty crazy behaviour: http://mke3.net/blender/devel/2.5/continuous_grab_tablet.mov
>>
>> Ideally the two should play nicely - If continuous grab is enabled,
>> when it's a mouse event, the cursor should be warped, but when it's a
>> tablet event, it should leave the cursor alone.
>>
>> In practice though it's a bit tricker, I had a look through the code
>> today and it seems the in the part of the Blender code which decides
>> whether to warp or not, the event is always sent without tablet
>> customdata. Looking at the event, it seems to be the event which
>> initiates the tool, i.e. GKEY.
>>
>> So anyone have any ideas on solving this?
>>
>> cheers
>>
>> Matt
>>
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-- 
- Campbell