jaredandClaude Opus 5
cf80729a5c
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Touch had no way to move between images except the small arrow buttons. A one-finger horizontal swipe now goes next/previous, and is inert while the image is zoomed in (where the same gesture pans). The classifier is pure and unit-tested: ≥ 60 px horizontal, not mostly vertical, under 800 ms, single finger. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA
24 lines
904 B
TypeScript
24 lines
904 B
TypeScript
import { describe, it } from 'node:test';
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import assert from 'node:assert/strict';
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import { classifySwipe } from './useSwipeNav';
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const start = { x: 300, y: 200, t: 1_000 };
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const at = (x: number, y: number) => ({ x, y });
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describe('classifySwipe', () => {
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it('left is next, right is prev', () => {
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assert.equal(classifySwipe(start, at(100, 210), 1_200), 'next');
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assert.equal(classifySwipe({ ...start, x: 100 }, at(300, 190), 1_200), 'prev');
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});
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it('ignores short, too-vertical and too-slow gestures', () => {
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assert.equal(classifySwipe(start, at(260, 200), 1_200), undefined);
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assert.equal(classifySwipe(start, at(100, 400), 1_200), undefined);
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assert.equal(classifySwipe(start, at(100, 200), 2_500), undefined);
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});
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it('allows a little vertical drift on a long horizontal swipe', () => {
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assert.equal(classifySwipe(start, at(60, 340), 1_300), 'next');
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});
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});
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