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@moffatman moffatman commented Dec 29, 2023

Now trackpad gestures will count as pointerCount=2 instead of 1. It makes it easier for people who want to have different behaviour for single-finger drag vs two-finger pan/zoom. Also fixed up scale_test.dart to verify pointerCount in more places.

Related: #13102
Fixes #140730

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@github-actions github-actions bot added framework flutter/packages/flutter repository. See also f: labels. f: gestures flutter/packages/flutter/gestures repository. labels Dec 29, 2023
@moffatman moffatman force-pushed the panzoom_pointer_count branch from 232c2f9 to f82c640 Compare December 29, 2023 22:38
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feinstein commented Jan 1, 2024

I am not sure if this is valid, we could have a scale gesture with 3 or more pointers at the same time, and this will be limiting the information to only 2, while the information of 3 could be useful for other animations or interactions.

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No information is getting lost here, and no change to pointer count for touch gestures. Just now each "trackpad" in active use will now count as 2 pointers instead of 1.

@goderbauer goderbauer requested a review from Piinks January 2, 2024 23:04
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Hey @moffatman good to see you! :)

Related: #13102
Related: #140730

Is the first resolved by this?
If not, what further needs doing to resolve those issues after this? Just asking so we can update those issues.

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Should the public docs mention anything about this?

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Sure, will mention trackpad gestures here

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Hi @Piinks
I don't think the first one can be closed, there is also a general complaint about single-finger scale there. But we could close the second ticket after this is merged I think.

@moffatman moffatman force-pushed the panzoom_pointer_count branch from 5ece5a5 to af9fe45 Compare January 6, 2024 00:43
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This LGTM, thank you!

@Piinks Piinks added the autosubmit Merge PR when tree becomes green via auto submit App label Jan 18, 2024
@auto-submit auto-submit bot merged commit e05d0dd into flutter:master Jan 18, 2024
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osaxma commented Jan 18, 2024

Thank you @moffatman for taking care of this -- much appreciated 🙏🏽

@XilaiZhang XilaiZhang added cp: beta cherry pick this pull request to beta release candidate branch and removed cp: beta cherry pick this pull request to beta release candidate branch labels Jan 18, 2024
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Manual roll Flutter from f77f824 to 684247a (39 revisions)

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GestureDetector.onTap is ignored after scaling activity

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