Re: Support of Joystick/Gamepad in GTK+ 3.18

[Samik Ganguly <sganguly87 gmail com>]

Hello Göran,
    Thanks for the reply. I agree each input device would have their 
own protocol, but the corresponding driver should abstract them out and 
present some standard interface, right?
Is there no GTK+ API for handling joysticks like in SDL? Polling for the 
events by reading file should work on Linux, which I intended to handle 
through 
libevdev(http://www.freedesktop.org/software/libevdev/doc/1.4.5/) but 
this is Linux specific as input devices will be handled differently on 
Windows. GTK+ has advantage of being cross-platform so I'd prefer any 
GTK+ API for this task. If not, should I use another cross-platform 
library(e.g. SDL) for the joystick handling purpose only or implement 
the joystick-handler for each platform separately?
Best regards,
Samik
On Saturday 16 January 2016 02:48 PM, Göran Hasse wrote:
> Hello,
>
> In theory this is simple. Every device (in unix/linux) have a file under /dev/input/...
> Just open and read data from this device as from an ordinary file-descriptor.
>
> In practice every joystick, mouse vendor have its own protocol and you must know this protocol to be able
> to read and parse input. Some mouses and joysticks have in /dev/input/by-id representation.
>
> Just create a socket (file) and add it as imput.
>
> gdk_input_add( my_sock, GDK_INPUT_READ, GTK_SIGNAL_FUNC(file_function), &cmdinfo );
>
> as
>
> gdk_input_add( "/dev/input/by_id/...", GDK_INPUT_READ, GTK_SIGNAL_FUNC(file_function), &cmdinfo );
>
> /gh
>
> Den 2016-01-14 kl. 12:47, skrev Samik Ganguly:
> > Hello GTK+ developers,
> >      I have a few questions about GTK+ input support. I understand GTK+ is cross-platform GUI toolkit and 
> > have support for several input device like mouse, keyboard and touch. I want to know
> >
> >    * does GTK+ 3.18 support Joystick functionalities like axes, haptics and multiple joysticks.
> >    * If not, how can I override the input subsystem of GTK+ to extract only joystick events to handle them 
> > from a different library which might have support for this?
> >    * does GTK+ derive input support from underlying windowing system? In that case if the underlying 
> > windowing system(such as X11) doesn't support joysticks can I still integrate it with GTK+(e.g. through 
> > evdev)?
> >
> > Thank you for support,
> > Samik
> >
> >
> >
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