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fix: pinch zoom in mobile app - #18744
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To properly zoom to current position and pan at the correct speed TODO: zoom to current pinch position
alextran1502
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May 29, 2025 14:13
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* Change photo zoom logic To properly zoom to current position and pan at the correct speed TODO: zoom to current pinch position * zoom to current pinch position * Clean unused variable * Formatting * fix: lint --------- Co-authored-by: Alex <alex.tran1502@gmail.com>
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* fix: pinch + move scale * added lost changes from #18744
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Description
Unfortunately I think I broke more things than I fixed in #18569, sorry for not testing it enough.
Fixes #18730 "always zooms towards the image center". Now zooms to the
focalPoint.I am not sure if or where
widget.enablePanAlwaysistrueor what it should do in that case, but I believe it should only disable the clamping.details.focalPointis relative to top left of the screen, butthis.positionis relative to the center, which is why I calculatecenteredFocalPoint. I didn't find any function that would provide this functionality. The closest one wasscaleBoundaries.outerSize.center(origin)but that one adds half of the size instead of subtracting it.How Has This Been Tested?
Screenshots (if appropriate)
Screen recording after the changes:
screen_recording.mp4
Checklist:
src/services/uses repositories implementations for database calls, filesystem operations, etc.src/repositories/is pretty basic/simple and does not have any immich specific logic (that belongs insrc/services/)