flick scroll Inertia

[avazqu...@gmail.com]

Hi, All.

I'm doing test with the scroll component. It happens that for short flick, the scroll has very little inertia. For long flick, the scroll has a better inertia.

Is this a bug?

Is there any way to modify the inertia for short flick?

I don't know if I'm explaining well...

Thanks!

Regards!

[Michael Bayne]

Are you testing on desktop or phone/touchscreen? On phone a short flick tends to generate a lot more velocity due to the way your finger interacts. The flicking code is tuned for touch screens not mouse, since flicking with the mouse is not a normal UI gesture.

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-- m...@samskivert.com

[avazqu...@gmail.com]

I am testing on phone Android. I have record a video. you can see here: https://youtu.be/OjISPKhK4vk

El miércoles, 12 de julio de 2017, 17:31:39 (UTC+2), Michael Bayne escribió:

Are you testing on desktop or phone/touchscreen? On phone a short flick tends to generate a lot more velocity due to the way your finger interacts. The flicking code is tuned for touch screens not mouse, since flicking with the mouse is not a normal UI gesture.

On Wed, Jul 12, 2017 at 6:23 AM, <avazqu...@gmail.com> wrote:

Hi, All.

I'm doing test with the scroll component. It happens that for short flick, the scroll has very little inertia. For long flick, the scroll has a better inertia.

Is this a bug?

Is there any way to modify the inertia for short flick?

I don't know if I'm explaining well...

Thanks!

Regards!

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[Michael Bayne]

It's possible that you're flicking less than the click distance, which on that particular code seems to be set rather high as a default (15 pixels). There is currently no way to supply custom configuration to the code that handles the flicking logic, but I'll add that, so you can customize it.

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[Michael Bayne]

I added the ability to configure the XYFlicker parameters which control how the Scroller scrolls, but I also eliminated some pointless checks it was doing that should make small flicks behave a bit more as expected, so you might not end up needing to tune the parameters.

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[avazqu...@gmail.com]

Thanks so much.

I just tried the tripleplayn test and it seems to work better. I will try to modify the parameters you say if I can find the optimal settings.

Regards!

-- m...@samskivert.com