coinosv3.git/tools/pager-tap-slop-test.js, branch master

Pager swipes: follow the finger sooner, page on a shorter swipe, glide faster, no step back

2026-10-13T23:36:16Z

- The glide was timed from now, but a frame's time can be a little earlier: its first frame stepped back (72px -> 58) before going on, the choppy 'reset' on letting go. Timed from its first frame now. - Slides follow the finger after 10px (was 30: a dead zone, then a jump). A touch that comes and goes within 24px and 350ms is still a tap. - On letting go: on to the next past a tenth of the width across, an eighth of the height down, or a flick of 24px at 0.2px/ms (was a fifth, 48px, 0.3). - Glide at most 130ms (was 170). Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt

Pager glide: land on the slide itself, no overshoot and snap-back; quicker

2026-10-13T18:32:23Z

The glide aimed at n x the scroller's height, but a post is 100dvh, a hair off it on a phone; the error grew post by post until it landed past the slide and the snap yanked it back. It now aims at the measured position of the next slide. Faster too: at most 170ms (lands in ~195ms from lift-off). Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt

Pager: a snappy glide to the next slide, not the browser's slow smooth scroll

2026-10-13T18:24:57Z

Letting go of a swipe (or an arrow key) runs the pager's own eased-out glide, at most 220ms and quicker after a fast flick; a finger catching it mid-glide takes it from there. A swipe now lands in ~240ms (was ~425ms). Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt

Media pager: a tap is a tap even if the finger moves a little, and a swipe has to mean it. Adam tapped a clip to pause it and it was taken for a swipe: the slides scrolled natively, and the browser takes a touch that moves a few pixels for a scroll — no click, so no pause — while a quick one flung the pager on to the next slide (reproduced: an 18px drift paged on). Holding the scroll back after the fact doesn't work (the fling comes after touchend), and stopping the first move stops the browser scrolling for the whole touch, so the pager now judges and moves touches itself: the slides hold still until a touch has gone 30px — short of that it's a tap, done here when the browser sent no click (a button under it is pressed), and a later click isn't counted twice — and past it they follow the finger the way it set off (up/down post to post, across within a post, snap off while dragging), going on to the next on letting go if the finger went a fifth of the screen or flicked (0.3 px/ms over at least 48px), else back. Touches on the seek bar, in an opened caption, or on a zoomed-in picture are left to those. And the arrow keys go to the slide or post next to the one on screen, by name, not "a screen further" — from a scroll still settling that landed short (quote-pager-test failed two runs in three). tools/pager-tap-slop-test.js (drifts of 18px and 14px and a quick 25px flick: taps — paused, played, not paged; a 320px swipe up and a 300px swipe down page; a slow 70px drag springs back; a quick 80px flick pages).

2026-10-13T06:42:20Z

Co-Authored-By: Claude Opus 5.5 Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt