Re: Support of Joystick/Gamepad in GTK+ 3.18
- Date: Sat, 16 Jan 2016 20:22:50 +0530
- From: Samik Ganguly <sganguly87@xxxxxxxxx>
- Subject: Re: Support of Joystick/Gamepad in GTK+ 3.18
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
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?
On Saturday 16 January 2016 02:48 PM, Göran Hasse wrote:
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 );
gdk_input_add( "/dev/input/by_id/...", GDK_INPUT_READ, GTK_SIGNAL_FUNC(file_function), &cmdinfo );
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,
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