[Vm-dev] Failed: OpenSmalltalk/opensmalltalk-vm#1892 (win_generate_mouse_wheel_events - b982355)

[Nicolas Cellier]

Argh,
When I change a win32 file, Travis build fail (?)
When I change a linux file, it's Appveyor that fails (!)

Those failures are very instructive...
They tell us that our infrastructure sucks ;)

Le jeu. 26 déc. 2019 à 22:01, Travis CI <builds at travis-ci.org> a écrit :

>
>
> OpenSmalltalk
>
> /
>
> opensmalltalk-vm
>
> <https://travis-ci.org/OpenSmalltalk/opensmalltalk-vm?utm_medium=notification&utm_source=email>
>
> [image: branch icon]win_generate_mouse_wheel_events
> <https://github.com/OpenSmalltalk/opensmalltalk-vm/tree/win_generate_mouse_wheel_events>
> [image: build has failed]
> Build #1892 failed
> <https://travis-ci.org/OpenSmalltalk/opensmalltalk-vm/builds/629774919?utm_medium=notification&utm_source=email>
> [image: arrow to build time]
> [image: clock icon]17 mins and 10 secs
>
> [image: Nicolas Cellier avatar]Nicolas Cellier
> b982355 CHANGESET →
> <https://github.com/OpenSmalltalk/opensmalltalk-vm/compare/95e821968134...b982355886cf>
>
> Deliver mouse wheel events only once they reach a threshold
>
> On some devices (example Mac trackpad), many events are generated with
> small deltas.
> This is overwhelming the EventSensor loop at image side to the detriment
> of user experience.
> Workaround by letting the VM accumulate those deltas until they reach a
> threshold before delivering.
>
> In case of high delta values, we generate a single value.
> It's up to image side to handle those values
> (until now, Squeak 5.3 just ignored them, VM is not to be blamed for that).
>
> Note: 2 values are hardcoded for now
> - the timeout for stopping accumulation (500ms)
> - the threshold for delivering the event to the image.
>
> The threshold could have been WHEEL_DELTA, but it gives bad sensitivity on
> my own device, so use only a fraction of that in the hope that it fits
> other devices too.
> Please report if those tuning are inappropriate. We may add parameters in
> the future if necessary...
>
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