[PATCH libinput resend] touchpad: Allow the center of pinned fingers to drift over time

[Peter Hutterer]

On Wed, Jan 14, 2015 at 10:17:06AM +0100, Hans de Goede wrote:
> Allow the center of pinned fingers to drift over time, to avoid accidentally
> unpinning fingers.
> 
> BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=86807
> Signed-off-by: Hans de Goede <hdegoede at redhat.com>

pushed, thanks.

Cheers,
   Peter

> ---
>  src/evdev-mt-touchpad.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
> index 147142a..d8866e5 100644
> --- a/src/evdev-mt-touchpad.c
> +++ b/src/evdev-mt-touchpad.c
> @@ -325,7 +325,12 @@ tp_unpin_finger(struct tp_dispatch *tp, struct tp_touch *t)
>  			tp->buttons.motion_dist * tp->buttons.motion_dist) {
>  		t->pinned.is_pinned = false;
>  		tp_set_pointer(tp, t);
> +		return;
>  	}
> +
> +	/* The finger may slowly drift, adjust the center */
> +	t->pinned.center_x = t->x + t->pinned.center_x / 2;
> +	t->pinned.center_y = t->y + t->pinned.center_y / 2;
>  }
>  
>  static void
> -- 
> 2.1.0
> 
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