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Zooming with a Magic Mouse or trackpad is too fast #15423

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ath0mas opened this issue Dec 12, 2023 · 2 comments · May be fixed by #15425
Open

Zooming with a Magic Mouse or trackpad is too fast #15423

ath0mas opened this issue Dec 12, 2023 · 2 comments · May be fixed by #15425
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@ath0mas
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ath0mas commented Dec 12, 2023

Describe the bug
Users and I are experiencing super fast zooming on our private maps when using a Magic Mouse or a trackpad.
It is quite unusable since in like 2, maximum 3, standard "wheel" moves the map jumps from street level to world view.
The zoom seems really too sensitive, while on other mainstream maps websites it's not the case.

To Reproduce
Steps to reproduce the behavior:

  1. Go to https://openlayers.org/en/latest/examples/pinch-zoom.html
  2. Use a Magic Mouse or trackpad to zoom
  3. In 2 or 3 moves the map jumps from street to world view

We are using OpenLayers v6, but as described, we have the same behavior with current examples from main branch.
It seems that before our upgrade to v6, such behavior did not exist.
Our maps always has constrainResolution: true.

Expected behavior
Zooming with a trackpad should be less sensitive.

WIP: I'll prepare a PR soon, as I analyzed and possibly found a condition that should be inverted to be more logical to me.
(related to #10672 changes)
@ath0mas ath0mas added the bug label Dec 12, 2023
@ath0mas ath0mas linked a pull request Dec 13, 2023 that will close this issue
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ltshb added a commit to geoadmin/web-mapviewer that referenced this issue Feb 27, 2024
@ltshb
PB-277: The mouse wheel zoom constraint had some issues with different
9e9c839 
devices/os

On some device and os the mouse zoom wheel was unusable (one scroll step
would result to full zoom in or out). A user reported this per email and
I had the issue on my private windows machine with its touchpad and with
2 different mouses. Strangely the same mouse were working fine with
my HP Zbook on linux.

See also openlayer issue openlayers/openlayers#15423
@ltshb ltshb mentioned this issue Feb 27, 2024
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@ltshb
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ltshb commented Feb 27, 2024

I had the similar issue using the constrainResolution: true, see geoadmin/web-mapviewer#665. I solved the issue by removing this flag.
The issue was strange the zoom in/out was with one small scroll almost a full zoom in or out. What was strange also is that it was mouse device and os dependent. On Windows 11 I had the issue with 2 different mouse, but using the same mouse on another laptop using linux, the srcoll was working fine.

@ahocevar
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Just one note from a user's perspective: I find OpenLayers apps with constrainResolution: true quite annoying. I want to be in control of the viewport I see. A constrained resolution always zooms me to a viewport I do not want. I'm wondering why many application developers use this setting.

ltshb added a commit to geoadmin/web-mapviewer that referenced this issue Feb 28, 2024
@ltshb
PB-277: The mouse wheel zoom constraint had some issues with different
4b4fc17 
devices/os

On some device and os the mouse zoom wheel was unusable (one scroll step
would result to full zoom in or out). A user reported this per email and
I had the issue on my private windows machine with its touchpad and with
2 different mouses. Strangely the same mouse were working fine with
my HP Zbook on linux.

See also openlayer issue openlayers/openlayers#15423
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Trackpad zoom by 1 too when view has a zoom constraint ath0mas/openlayers
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@ahocevar @ath0mas @ltshb