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pdfcraft/parity
Chiranjeevi U 4db6ac4ae2 M3: Accelerate coarse wheel scrolling (#1094)
* Viewer: accelerate coarse wheel scrolling (#1072)

Line/Page notches moved a fixed eased step, so a fast spin felt slow.
Accumulate one frame of coarse input per axis, scale by arrival rate
(1.0 idle, up to 6.0 spinning), and apply it directly like precise
touchpad input.

Signed-off-by: Chiranjeevi U <244287281+chiranjeevi-max@users.noreply.github.com>

* Viewer: add only the fast-spin surplus on top of egui smoothing

Single notches flow through egui untouched, so isolated input matches
the scroll speed preference exactly; page units are never boosted.

Signed-off-by: Chiranjeevi U <244287281+chiranjeevi-max@users.noreply.github.com>

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Signed-off-by: Chiranjeevi U <244287281+chiranjeevi-max@users.noreply.github.com>
2026-10-18 16:15:39 -06:00
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