On Wed, Jun 25, 2014 at 02:30:15AM -0400, Stephen Chandler Paul wrote:
> Because bad distance events still trigger calls to tablet_flush(),
> tablet_flush() will see that the tablet is out of proximity and assume it's an
> appropriate time to send a proximity-out event, even when we've already sent
> one. This results in multiple proximity-out events being sent in a row instead
> of just one.

can you add a test for this please, it's a bug I'd prefer not to come back
in the future

Cheers,
   Peter
> 
> Signed-off-by: Stephen Chandler Paul <[email protected]>
> ---
>  src/evdev-tablet.c | 12 ++++++++----
>  src/evdev-tablet.h |  3 ++-
>  2 files changed, 10 insertions(+), 5 deletions(-)
> 
> diff --git a/src/evdev-tablet.c b/src/evdev-tablet.c
> index a6acca4..584b49e 100644
> --- a/src/evdev-tablet.c
> +++ b/src/evdev-tablet.c
> @@ -102,7 +102,7 @@ tablet_update_tool(struct tablet_dispatch *tablet,
>               tablet_unset_status(tablet, TABLET_TOOL_OUT_OF_PROXIMITY);
>       }
>       else
> -             tablet_set_status(tablet, TABLET_TOOL_OUT_OF_PROXIMITY);
> +             tablet_set_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY);
>  }
>  
>  static inline double
> @@ -164,7 +164,8 @@ tablet_check_notify_axes(struct tablet_dispatch *tablet,
>       }
>  
>       if (axis_update_needed &&
> -         !tablet_has_status(tablet, TABLET_TOOL_OUT_OF_PROXIMITY))
> +         !tablet_has_status(tablet, TABLET_TOOL_OUT_OF_PROXIMITY) &&
> +         !tablet_has_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY))
>               tablet_notify_axis(base,
>                                  time,
>                                  tablet->changed_axes,
> @@ -378,7 +379,7 @@ tablet_flush(struct tablet_dispatch *tablet,
>            struct evdev_device *device,
>            uint32_t time)
>  {
> -     if (tablet_has_status(tablet, TABLET_TOOL_OUT_OF_PROXIMITY)) {
> +     if (tablet_has_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY)) {
>               /* Release all stylus buttons */
>               tablet->button_state.stylus_buttons = 0;
>               tablet_set_status(tablet, TABLET_BUTTONS_RELEASED);
> @@ -405,8 +406,11 @@ tablet_flush(struct tablet_dispatch *tablet,
>               tablet_unset_status(tablet, TABLET_BUTTONS_PRESSED);
>       }
>  
> -     if (tablet_has_status(tablet, TABLET_TOOL_OUT_OF_PROXIMITY))
> +     if (tablet_has_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY)) {
>               tablet_notify_proximity_out(&device->base, time);
> +             tablet_set_status(tablet, TABLET_TOOL_OUT_OF_PROXIMITY);
> +             tablet_unset_status(tablet, TABLET_TOOL_LEAVING_PROXIMITY);
> +     }
>  
>       /* Update state */
>       memcpy(&tablet->prev_button_state,
> diff --git a/src/evdev-tablet.h b/src/evdev-tablet.h
> index 504b093..89cf224 100644
> --- a/src/evdev-tablet.h
> +++ b/src/evdev-tablet.h
> @@ -34,7 +34,8 @@ enum tablet_status {
>       TABLET_BUTTONS_PRESSED = 1 << 2,
>       TABLET_BUTTONS_RELEASED = 1 << 3,
>       TABLET_STYLUS_IN_CONTACT = 1 << 4,
> -     TABLET_TOOL_OUT_OF_PROXIMITY = 1 << 5
> +     TABLET_TOOL_LEAVING_PROXIMITY = 1 << 5,
> +     TABLET_TOOL_OUT_OF_PROXIMITY = 1 << 6
>  };
>  
>  struct button_state {
> -- 
> 1.8.5.5
> 
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