[haiku-development] Re: Joysticks in Haiku
- From: François Revol <revol@xxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Fri, 11 Mar 2011 16:20:16 +0100
Le 11 mars 2011 à 16:03, Stephan Aßmus a écrit :
> Hi,
>
> Am 11.03.2011 15:18, schrieb François Revol:
>> Btw, I had an issue when writing the VirtualBox mouse input_server add-on.
>> Because virtualbox only passes absolute coordinates to it, I'm only able to
>> send B_MOUSE_MOVED messages without the buttons field. Some apps like
>> Tracker don't really like this and fail to handle selections or drags
>> because it doesn't see the buttons as being pressed.
>
> This sounds really strange. Why would you be unable to send button state in
> each message? What does it have to do with coordinates?
It's just that VBox sends all button events through the PS/2 port as regular
mouse events, and only the absolute position is available through their fake
PCI device. So input_server gets a mixture of B_MOUSE_DOWN|UP with relative
move of 0,0 and B_MOUSE_MOVED with the absolute positions but no button data.
Oddly app_server doesn't have problem with this when moving windows around, but
Tracker can't start a selection or drag. Also releasing the mouse in a menu
doesn't invoke it either.
VMware likely does the same which is why the vmware addon is implemented as a
filter that adds absolute position to passing messages and caches buttons, and
not a device. I went for a device naively and also to allow someone to disable
it with iroster if needed, but I will have to also add a filter I suppose.
François.
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