Hi,
I have the vague impression that the feature isn't popular here, but
it makes sense if you are using a trackpoint, or a three-button mouse
without a wheel. According to the libinput documentation, it is enabled
by default for trackpoints. However, at first sight I'd think that such
a default wouldn't hurt the use of other pointing devices (including
touchpads and clickpads in compat mode).
On 06/16/2018 06:19 PM, Matthieu Herrb wrote:
> Hi,
>
> the ws(4) mouse driver has the option of emulating the mouse wheel
> on motion + a given button is generated.
>
> This is active by default on button 2 on recent Linux systems (those
> using libinput).
>
> Should OpenBSD's ws(4) activate it by default too ?
>
> If you want to experiment without rebuilding X you can run the
> commands below to enable it
>
> xinput --set-prop --type=int /dev/wsmouse 'WS Pointer Wheel Emulation' 1
> xinput --set-prop --type=int /dev/wsmouse 'WS Pointer Wheel Emulation Button'
> 2
>
> Index: man/ws.man
> ===================================================================
> RCS file: /cvs/OpenBSD/xenocara/driver/xf86-input-ws/man/ws.man,v
> retrieving revision 1.14
> diff -u -r1.14 ws.man
> --- man/ws.man 3 Sep 2016 14:01:16 -0000 1.14
> +++ man/ws.man 16 Jun 2018 14:12:49 -0000
> @@ -94,7 +94,7 @@
> and
> .B YAxisMapping
> options.
> -Default: off.
> +Default: on.
> .TP 4
> .BI "Option \*qEmulateWheelButton\*q \*q" integer \*q
> Specifies which button must be held down to enable wheel emulation mode.
> @@ -107,7 +107,7 @@
> If the button is 0 and
> .BR EmulateWheel
> is on, any motion of the device is converted into wheel events.
> -Default:\ 4.
> +Default:\ 2.
> .TP 4
> .BI "Option \*qEmulateWheelInertia\*q \*q" integer \*q
> Specifies how far (in pixels) the pointer must move to generate button
> Index: src/emuwheel.c
> ===================================================================
> RCS file: /cvs/OpenBSD/xenocara/driver/xf86-input-ws/src/emuwheel.c,v
> retrieving revision 1.3
> diff -u -r1.3 emuwheel.c
> --- src/emuwheel.c 25 Dec 2015 15:08:28 -0000 1.3
> +++ src/emuwheel.c 16 Jun 2018 14:12:49 -0000
> @@ -178,9 +178,9 @@
> int button, inertia, timeout;
>
> priv->emulateWheel.enabled = xf86SetBoolOption(pInfo->options,
> - "EmulateWheel", FALSE);
> + "EmulateWheel", TRUE);
>
> - button = xf86SetIntOption(pInfo->options, "EmulateWheelButton", 4);
> + button = xf86SetIntOption(pInfo->options, "EmulateWheelButton", 2);
> if (button < 0 || button > NBUTTONS) {
> xf86IDrvMsg(pInfo, X_WARNING,
> "Invalid EmulateWheelButton value: %d\n", button);
>
