[Spice-devel] spice-vdagent: how to enable additional mouse buttons?

[bruts at netc.fr]

Uri,



Would it be as simple as adding:



ioctl(uinput->fd, UI_SET_KEYBIT,  BTN_BACK);

ioctl(uinput->fd, UI_SET_KEYBIT,  BTN_FORWARD);



and re-compiling / testing?



I am not an experienced coder and have not had the time yet to get a good overview of the spice-vdagent code, so this might be a too simple approach.



I guess all of these values might be tested:



#define BTN_MISC        0x100
#define BTN_0            0x100
#define BTN_1            0x101
#define BTN_2            0x102
#define BTN_3            0x103
#define BTN_4            0x104
#define BTN_5            0x105
#define BTN_6            0x106
#define BTN_7            0x107
#define BTN_8            0x108
#define BTN_9            0x109

#define BTN_MOUSE        0x110
#define BTN_LEFT        0x110
#define BTN_RIGHT        0x111
#define BTN_MIDDLE        0x112
#define BTN_SIDE        0x113
#define BTN_EXTRA        0x114
#define BTN_FORWARD        0x115
#define BTN_BACK        0x116
#define BTN_TASK        0x117



Is there any way to test the btn value? Like xev is not showing me anything related to this value?



Your input is appreciated!



Thanks





De : Uri Lublin <uril at redhat.com>
À : bruts at netc.fr;
   spice-devel at lists.freedesktop.org
Sujet : Re: [Spice-devel] spice-vdagent: how to enable additional mouse buttons?
Date : 11/05/2020 15:23:30 Europe/Paris

On 5/11/20 4:08 PM, bruts at netc.fr wrote:
> Hi,
> 
> 
> 
> Yes most likely.
> 
> I find these lines of code:
> 
> 
> 
> /* buttons */
>     ioctl(uinput->fd, UI_SET_EVBIT, EV_KEY);
>     ioctl(uinput->fd, UI_SET_KEYBIT, BTN_LEFT);
>     ioctl(uinput->fd, UI_SET_KEYBIT, BTN_MIDDLE);
>     ioctl(uinput->fd, UI_SET_KEYBIT, BTN_RIGHT);
> 
>     /* wheel */
>     ioctl(uinput->fd, UI_SET_EVBIT, EV_REL);
>     ioctl(uinput->fd, UI_SET_RELBIT, REL_WHEEL);
> 
> 
> I will probably need to declare the additional mouse buttons of my mouse (Logitech G403), so I run xev to find some information:
> 
> 
> 
> (BTN_LEFT, BTN_RIGHT, button 8, button 9)
> 
> 
> 
> ButtonPress event, serial 48, synthetic NO, window 0x3000001,
>     root 0x3ad, subw 0x0, time 361327, (127,94), root:(128,144),
>     state 0x0, button 1, same_screen YES
> 
> ButtonRelease event, serial 48, synthetic NO, window 0x3000001,
>     root 0x3ad, subw 0x0, time 361426, (127,94), root:(128,144),
>     state 0x100, button 1, same_screen YES
> 
> ButtonPress event, serial 48, synthetic NO, window 0x3000001,
>     root 0x3ad, subw 0x0, time 362448, (127,94), root:(128,144),
>     state 0x0, button 3, same_screen YES
> 
> ButtonRelease event, serial 48, synthetic NO, window 0x3000001,
>     root 0x3ad, subw 0x0, time 362556, (127,94), root:(128,144),
>     state 0x400, button 3, same_screen YES
> 
> ButtonPress event, serial 48, synthetic NO, window 0x3000001,
>     root 0x3ad, subw 0x0, time 366829, (127,94), root:(128,144),
>     state 0x0, button 8, same_screen YES
> 
> ButtonRelease event, serial 48, synthetic NO, window 0x3000001,
>     root 0x3ad, subw 0x0, time 366949, (127,94), root:(128,144),
>     state 0x0, button 8, same_screen YES
> 
> ButtonPress event, serial 48, synthetic NO, window 0x3000001,
>     root 0x3ad, subw 0x0, time 368093, (127,94), root:(128,144),
>     state 0x0, button 9, same_screen YES
> 
> ButtonRelease event, serial 48, synthetic NO, window 0x3000001,
>     root 0x3ad, subw 0x0, time 368250, (127,94), root:(128,144),
>     state 0x0, button 9, same_screen YES
> 
> 
> 
> Now the next question is obvious: how do I adjust the code to add support for button 8,9 ?
> 
> 
> 
> I thought BTN_LEFT and BTN_RIGHT would be declared in uinput.h but they are global variables? or where are they declared?

I found them in
/usr/include/linux/input-event-codes.h.
There is also BTN_BACK but I'm not sure it's mapped to any of button-8 
or 9.

Uri.

> 
> Any help with adding support for these buttons would be very appreciated and finally make me stop using virtualbox lol.
> 
> Thanks!
> 
> 
> 
> 
> 
> 
> 
> De : Uri Lublin <uril at redhat.com>
> À : bruts at netc.fr;
>    spice-devel at lists.freedesktop.org
> Sujet : Re: [Spice-devel] spice-vdagent: how to enable additional mouse buttons?
> Date : 03/05/2020 17:33:55 Europe/Paris
> 
> On 5/1/20 3:51 PM, bruts at netc.fr wrote:
>>
>> I am using spice-vdagent on most of my qemu-kvm vm's, while this is very
>> convenient, mouse button 8 and 9 are not working (those are the side
>> buttons of the mouse, one is often used for BACK function of the
>> browser, which my thumb is actually addicted to).
>> How could i make these buttons work with spice-vdagent?
> 
> Hi,
> 
> Currently 5 mouse buttons are supported. I think some code is needed to
> be added in order to support more buttons.
> 
> Uri.
> 
>>
>> Thanks for the suggestions,
>>
>> Bruts
> 
> 
> 


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