* fix(ui): Overscroll off keeps an image smaller than the window centred (#10488)
With Tools › Overscroll off, an image smaller than the window stayed
wherever zooming around the pointer left it, inside the window, so
zooming out drifted it off centre. #1718 measured that on Photoshop 25.4,
but two reports of Photoshop itself (#10488, #4799) say it stays centred
with Overscroll off. The owner chose the centred behaviour:
scrollbars::clamp_axis now centres an axis on which the image is no
larger than the view; a larger image still can't leave its edges, and
Overscroll on keeps the free view.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* test(ui): Overscroll off centres a fitting rotated image (#10488)
CodeRabbit on #11085: the rotated clamp path was only tested from an
already-centred view. A 600 px square at 45 degrees, started off centre
in a 900-point view, now ends with its screen bounds centred.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* style(ui): keep the rotated centring test within rustfmt's width
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
