diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/features/messages.js | 38 | ||||
| -rw-r--r-- | src/features/zaps.js | 138 | ||||
| -rw-r--r-- | src/i18n.js | 28 | ||||
| -rw-r--r-- | src/lnurl.js | 79 | ||||
| -rw-r--r-- | src/style.css | 10 |
5 files changed, 286 insertions, 7 deletions
diff --git a/src/features/messages.js b/src/features/messages.js index a6f49bb..20cfaa6 100644 --- a/src/features/messages.js +++ b/src/features/messages.js @@ -12267,10 +12267,27 @@ export function messagesFeature(ctx) { function pagerSlide(it) { const { ev, url } = it; const video = pager.kind === 'videos'; + // A picture flies in as the feed's copy of it (1100px wide, decoded + // already if the feed painted it; else the server's, cached at the CDN) + // and is sharpened to the original once it comes to rest (pagerSharpen). + // Originals as they passed — camera files, several megapixels each — + // decoded on the main thread and were uploaded as textures mid-flight, + // and the flight stuttered (Adam, 2026-10-16: "a bit of choppiness as + // they scroll"). A copy that fails falls back to the original. + const quick = !video && !/\.gif(\?|$)/i.test(url) ? (mediaReady.get(url) || {}).thumb || serverPic(url, 'col') || url : url; const media = video ? h('video', { class: 'mp-media', 'data-src': url, loop: true, playsinline: true, preload: 'none', poster: videoThumbs.get(url) || posterOf(ev, url) || (videoInfo.get(url) || {}).image || serverThumb(url) }) - : h('img', { class: 'mp-media', 'data-src': url, alt: '', draggable: 'false' }); + : h('img', { class: 'mp-media', 'data-src': quick, 'data-full': url, alt: '', draggable: 'false', decoding: 'async', + onError: (e) => { + const m = e.currentTarget; + if ((m.getAttribute('src') || '') !== url) { m.setAttribute('data-src', url); m.setAttribute('src', url); return; } + // the original is gone too (its host down, the file deleted): say + // so, in place of the browser's broken-picture glyph + let host = ''; try { host = new URL(url).hostname; } catch {} + m.closest('.mp-slide').classList.add('mp-gone'); + m.insertAdjacentElement('afterend', h('div', { class: 'mp-missing' }, h('div', { class: 'mp-missing-ico' }, '🖼'), h('div', {}, t('mediaPicGone')), host ? h('div', { class: 'small muted' }, host) : null)); + } }); const caption = mediaCaption(ev); const stop = (fn) => (e) => { e.stopPropagation(); fn(e); }; const slide = h('div', { class: 'mp-slide', 'data-k': mediaKey(it) }, @@ -12393,6 +12410,22 @@ export function messagesFeature(ctx) { const m = slide.querySelector('.mp-media'); if (m && !m.getAttribute('src')) m.setAttribute('src', m.tagName === 'VIDEO' ? playSrc(m.getAttribute('data-src')) : m.getAttribute('data-src')); } + // The slide at rest gets its picture's original — fetched and decoded + // aside first, then swapped in (same box, same aspect: nothing moves) — + // a moment after landing, so a quick page past it costs nothing. + function pagerSharpen(slide) { + const m = slide && slide.querySelector('img.mp-media'); + const full = m && m.getAttribute('data-full'); + if (!full || m.getAttribute('src') === full || m._sharp) return; + m._sharp = setTimeout(() => { + m._sharp = 0; + if (!pager || pager.cur !== slide) return; + const im = new Image(); + im.decoding = 'async'; + im.onload = () => { const go = () => { if (pager && m.isConnected && m.getAttribute('src') !== full) { m.setAttribute('data-src', full); m.setAttribute('src', full); } }; (im.decode ? im.decode().then(go, go) : go()); }; + im.src = full; + }, 300); + } function pagerRelease(slide) { const m = slide.querySelector('video.mp-media'); if (m && m.getAttribute('src')) { try { m.pause(); m.removeAttribute('src'); m.load(); } catch {} } @@ -12908,9 +12941,12 @@ export function messagesFeature(ctx) { if (v && pager.curAt) { const secs = (Date.now() - pager.curAt) / 1000; dwell = dwell ? dwell * 0.7 + secs * 0.3 : secs; } if (pagerSource() && video) el.classList.remove('show'); } + if (pager.cur) pager.cur.classList.remove('mp-cur'); + slide.classList.add('mp-cur'); // (the one with the layer for a pinch: style.css) pager.cur = slide; pager.anchor = slide; pager.curAt = Date.now(); + pagerSharpen(slide); pagerArrows(slide); pagerPosition(); if (pager.fromFeed) { const row = feedNow().notes.find((x) => x.id === slide._rowId); markSeen(row || slide._ev); } diff --git a/src/features/zaps.js b/src/features/zaps.js index d327f9d..d364738 100644 --- a/src/features/zaps.js +++ b/src/features/zaps.js @@ -13,7 +13,9 @@ import { t } from '../i18n.js'; import { npubOf } from '../nostr.js'; -import { parseZapTarget, zapTargetFromProfile, fetchPayParams, buildZapRequest, requestInvoice } from '../lnurl.js'; +import { parseZapTarget, zapTargetFromProfile, fetchPayParams, buildZapRequest, requestInvoice, parseLnurlAuth, lnurlAuthKey, lnurlAuthLogin, submitWithdraw } from '../lnurl.js'; +import { HDKey } from '@scure/bip32'; +import { mnemonicToSeedSync } from '@scure/bip39'; import { decodeNoffer } from '../noffer.js'; import { requestOfferInvoice } from '../clink.js'; import { decodeOffer } from '../bolt12.js'; @@ -134,7 +136,13 @@ export function zapsFeature(ctx) { z.address = lnTarget.address || z.address; } - const params = await fetchPayParams(target.url); + let params; + try { params = await fetchPayParams(target.url); } + catch (e) { + // not a payment after all: the site wants to pay US (LUD-03) + if (e && e.withdraw) { if (ui.zap === z) beginWithdraw(e.withdraw, z); return; } + throw e; + } if (ui.zap !== z) return; // user navigated away // Name the payee like a human: LNURL metadata usually carries the // lightning address (text/identifier) — show that instead of a bech32 @@ -290,6 +298,125 @@ export function zapsFeature(ctx) { } } + // ---- Lightning login (LNURL-auth) ---- + // A site's login lnurl pasted (or tapped) into Send: not a payment but a + // challenge to sign. Ask first — it is an identity act, naming the site — + // then sign with the key this wallet keeps for that site alone (LUD-05) + // and tell the site. (Adam, 2026-10-16: a Stacker News login lnurl in Send + // got "no sig query variable provided" — it was being paid.) + function beginLogin(auth) { + ui.zap = null; ui.sendError = ''; + ui.lnAuth = { auth, status: 'ask' }; + render(); + } + const masterKey = () => { + if (wallet.mnemonic) return HDKey.fromMasterSeed(mnemonicToSeedSync(wallet.mnemonic, wallet.passphrase || '')); + if (wallet.xprv) return HDKey.fromExtendedKey(wallet.xprv); + return null; + }; + async function doLogin(a) { + a.status = 'busy'; render(); + try { + const master = masterKey(); + if (!master) throw new Error(t('lnAuthNoKey')); + await lnurlAuthLogin(a.auth, lnurlAuthKey(master, a.auth.domain)); + if (ui.lnAuth !== a) return; + a.status = 'done'; + } catch (e) { + if (ui.lnAuth !== a) return; + a.status = 'error'; a.error = e.message || String(e); + } + render(); + } + function lnAuthView() { + const a = ui.lnAuth; + if (!a) return null; + const { domain, action } = a.auth; + const back = () => { ui.lnAuth = null; ui.sendError = ''; ui.send = blankSend(); render(); }; + const heading = '🔑 ' + t('lnAuthTitle'); + if (a.status === 'busy') { + return h('div', { class: 'card col', style: 'align-items:center;gap:14px;padding:32px 14px' }, + h('span', { class: 'spinner' }), + h('p', { class: 'muted', style: 'margin:0' }, t('lnAuthSigning', { domain }))); + } + if (a.status === 'done') { + return h('div', { class: 'card col', style: 'align-items:center;text-align:center;gap:14px;padding:32px 14px' }, + h('div', { class: 'check-badge' }, '✓'), + h('h3', { style: 'margin:0' }, t('lnAuthDoneTitle', { domain })), + h('p', { class: 'small muted', style: 'margin:0' }, t('lnAuthDoneHint')), + h('button', { class: 'btn-primary btn-block', onClick: back }, t('done'))); + } + const ask = t(action === 'register' ? 'lnAuthAskRegister' : action === 'link' ? 'lnAuthAskLink' : action === 'auth' ? 'lnAuthAskAuth' : 'lnAuthAskLogin', { domain }); + return h('div', { class: 'card col', style: 'gap:12px' }, + h('h3', {}, heading), + h('div', { class: 'small', style: 'font-size:18px;font-weight:600;word-break:break-all' }, domain), + h('p', { class: 'small muted', style: 'margin:0' }, ask), + h('p', { class: 'small muted', style: 'margin:0' }, t('lnAuthHow')), + a.status === 'error' ? h('div', { class: 'notice err' }, a.error || t('lnAuthFailed')) : null, + h('button', { class: 'btn-primary btn-block', onClick: () => doLogin(a) }, a.status === 'error' ? t('lnAuthRetry') : t(action === 'register' ? 'lnAuthGoRegister' : 'lnAuthGo')), + h('button', { class: 'btn-ghost btn-block', onClick: back }, t('back'))); + } + // ---- Lightning withdraw (LNURL-withdraw) ---- + // A site's withdraw lnurl: they will pay an invoice of ours, within their + // range. Ask the amount (their max to start; fixed when min = max), make + // the invoice over Ark, hand it over, and watch for the money. + function beginWithdraw(w, z) { + const maxSat = Math.floor(w.maxMsat / 1000), minSat = Math.ceil(w.minMsat / 1000); + ui.zap = null; ui.sendError = ''; + ui.lnWithdraw = { w, minSat, maxSat, fixed: minSat >= maxSat, amount: ctx.amountField(maxSat), status: 'ask', address: z && z.address }; + render(); + } + async function doWithdraw(d) { + const sats = d.fixed ? d.maxSat : (parseAmount(d.amount, getUnit()) || 0); + if (!(sats >= Math.max(1, d.minSat) && sats <= d.maxSat)) { d.error = t('lnWithdrawRange', { min: fmtAmount(d.minSat), max: fmtAmount(d.maxSat), unit: unitLabel() }); render(); return; } + if (wallet.watchOnly) { d.error = t('lnWithdrawWatchOnly'); render(); return; } + d.sats = sats; d.status = 'busy'; d.error = ''; render(); + try { + const inv = await hook('arkLnInvoice', sats, (d.w.description || t('lnWithdrawMemo', { domain: d.w.domain })).slice(0, 120)); + if (!inv || !inv.invoice) throw new Error(t('lnWithdrawNoInvoice')); + if (ui.lnWithdraw !== d) { hook('arkLnCancel', inv.id); return; } + await submitWithdraw(d.w, inv.invoice); + if (ui.lnWithdraw !== d) return; + d.status = 'sent'; d.lnId = inv.id; + hook('arkLnWatch', inv.id, (a) => { if (ui.lnWithdraw !== d) return; d.status = a && a.step === 'done' ? 'paid' : 'error'; if (d.status === 'error') d.error = t('lnWithdrawNotPaid'); render(); }); + } catch (e) { + if (ui.lnWithdraw !== d) return; + d.status = 'error'; d.error = e.message || String(e); + } + render(); + } + function lnWithdrawView() { + const d = ui.lnWithdraw; + if (!d) return null; + const domain = d.w.domain; + const back = () => { if (d.lnId && d.status !== 'paid') hook('arkLnUnwatch', d.lnId); ui.lnWithdraw = null; ui.sendError = ''; ui.send = blankSend(); render(); }; + const heading = '⚡ ' + t('lnWithdrawTitle'); + if (d.status === 'busy') { + return h('div', { class: 'card col', style: 'align-items:center;gap:14px;padding:32px 14px' }, + h('span', { class: 'spinner' }), h('p', { class: 'muted', style: 'margin:0' }, t('lnWithdrawAsking', { domain }))); + } + if (d.status === 'sent' || d.status === 'paid') { + const paid = d.status === 'paid'; + return h('div', { class: 'card col', style: 'align-items:center;text-align:center;gap:14px;padding:32px 14px' }, + paid ? h('div', { class: 'check-badge' }, '✓') : h('span', { class: 'spinner' }), + h('h3', { style: 'margin:0' }, paid ? t('lnWithdrawPaid', { amount: fmtAmount(d.sats) + ' ' + unitLabel() }) : t('lnWithdrawSent', { amount: fmtAmount(d.sats) + ' ' + unitLabel(), domain })), + paid ? null : h('p', { class: 'small muted', style: 'margin:0' }, t('lnWithdrawSentHint')), + h('button', { class: paid ? 'btn-primary btn-block' : 'btn-ghost btn-block', onClick: back }, paid ? t('done') : t('back'))); + } + return h('div', { class: 'card col', style: 'gap:12px' }, + h('h3', {}, heading), + h('div', { class: 'small', style: 'font-size:18px;font-weight:600;word-break:break-all' }, domain), + d.w.description ? h('p', { class: 'small muted', style: 'margin:0' }, d.w.description) : null, + h('p', { class: 'small muted', style: 'margin:0' }, d.fixed ? t('lnWithdrawFixed', { amount: fmtAmount(d.maxSat) + ' ' + unitLabel(), domain }) + : t('lnWithdrawOffer', { min: fmtAmount(d.minSat), max: fmtAmount(d.maxSat), unit: unitLabel(), domain })), + d.fixed ? null : h('div', { class: 'row gap6', style: 'align-items:center' }, + h('input', { type: 'number', min: '0', inputmode: 'decimal', placeholder: t('lnPayAmount'), value: d.amount, onInput: (e) => { d.amount = e.target.value; d.error = ''; render(); } }), + unitTag(), + h('button', { type: 'button', onClick: () => { d.amount = ctx.amountField(d.maxSat); d.error = ''; render(); } }, t('max'))), + d.error ? h('div', { class: 'notice err' }, d.error) : null, + h('button', { class: 'btn-primary btn-block', onClick: () => doWithdraw(d) }, d.status === 'error' ? t('lnAuthRetry') : t('lnWithdrawGo')), + h('button', { class: 'btn-ghost btn-block', onClick: back }, t('back'))); + } function zapView() { const z = ui.zap; if (!z) return null; @@ -391,6 +518,9 @@ export function zapsFeature(ctx) { id: 'zaps', // A lightning address / lnurl (always), or an npub that Ark didn't claim. matchSendText(text, typed) { + // a login challenge needs no balance, only the wallet's key + const auth = parseLnurlAuth(text); + if (auth) { beginLogin(auth); return true; } if (!canPay() || !ui.send || ui.send.recipients.length !== 1) return false; const tap = !typed; // scanned/pasted (a tap), not a keystroke const nof = maybeNoffer(text); @@ -472,8 +602,8 @@ export function zapsFeature(ctx) { begin({ kind: 'npub', pk, eventId: eventId || null }, shortNpub(npub || npubOf(pk))); return true; }, - resetSend() { ui.zap = null; }, - sendView() { return zapView(); }, + resetSend() { ui.zap = null; ui.lnAuth = null; ui.lnWithdraw = null; }, + sendView() { return lnAuthView() || lnWithdrawView() || zapView(); }, // Settings → Nostr: the one-tap zap amount. nostrSettingsCards() { const cur = ctx.zapDefaultSat ? ctx.zapDefaultSat() : 0; diff --git a/src/i18n.js b/src/i18n.js index 278d136..2b33a47 100644 --- a/src/i18n.js +++ b/src/i18n.js @@ -531,6 +531,7 @@ const STR = { postBlocked: 'Blocked', zapSending: 'Sending your zap…', msgReply: 'Reply', + mediaPicGone: 'This picture couldn’t be loaded', mediaOpenPost: 'Open the post', profNewPost: 'New post', profYourProfile: 'Your profile', @@ -1477,6 +1478,33 @@ const STR = { destPlaceholder: 'Address or Lightning invoice', lnQuoting: 'Getting a quote…', lnPayTitle: 'Pay over Lightning', + lnAuthTitle: 'Log in with Lightning', + lnAuthAskLogin: '{domain} is asking you to log in with your wallet.', + lnAuthAskRegister: '{domain} is asking you to create an account with your wallet.', + lnAuthAskLink: '{domain} is asking to link your wallet to your account there.', + lnAuthAskAuth: '{domain} is asking you to confirm it’s you, with your wallet.', + lnAuthHow: 'Your wallet signs their challenge with a key it keeps for this site alone. No payment is made, and nothing else about you is shared.', + lnAuthGo: 'Log in', + lnAuthGoRegister: 'Create account', + lnAuthRetry: 'Try again', + lnAuthSigning: 'Signing in to {domain}…', + lnAuthDoneTitle: 'Logged in to {domain}', + lnAuthDoneHint: 'Go back to their page — it should have let you in.', + lnAuthFailed: 'They didn’t accept the login.', + lnAuthNoKey: 'This account has no wallet key to log in with.', + lnWithdrawTitle: 'Withdraw over Lightning', + lnWithdrawOffer: '{domain} will pay you between {min} and {max} {unit}. How much?', + lnWithdrawFixed: '{domain} will pay you {amount}.', + lnWithdrawRange: 'Between {min} and {max} {unit}.', + lnWithdrawGo: 'Withdraw', + lnWithdrawAsking: 'Asking {domain} to pay…', + lnWithdrawSent: '{domain} has your invoice for {amount}', + lnWithdrawSentHint: 'It should arrive in a moment. You can leave this page; the payment will show in your history.', + lnWithdrawPaid: 'Received {amount}', + lnWithdrawNotPaid: 'They took the invoice but the payment didn’t arrive. Check with them before trying again.', + lnWithdrawNoInvoice: 'Couldn’t make an invoice to be paid to.', + lnWithdrawWatchOnly: 'This device can’t receive: the wallet is watch-only here.', + lnWithdrawMemo: 'Withdrawal from {domain}', lnPayAmount: 'Amount', lnPayBoltzFee: 'Swap fee', lnPayNetworkFee: 'Network fee', diff --git a/src/lnurl.js b/src/lnurl.js index 3f1b39b..bfebf0d 100644 --- a/src/lnurl.js +++ b/src/lnurl.js @@ -11,6 +11,10 @@ // that broadcasts the receipt; we only sign the request. import { bech32 } from '@scure/base'; +import { secp256k1 } from '@noble/curves/secp256k1'; +import { hmac } from '@noble/hashes/hmac'; +import { sha256 } from '@noble/hashes/sha256'; +import { bytesToHex, hexToBytes } from '@noble/hashes/utils'; import { parseNostrPubkey } from './nostr.js'; const enc = new TextEncoder(); @@ -43,6 +47,9 @@ export function lnAddressToUrl(addr) { export function parseZapTarget(input, { pk = null } = {}) { const s = (input || '').trim().replace(/^lightning:/i, ''); if (!s) return null; + // LUD-17: lnurlp:// (pay) and lnurlw:// (withdraw) are the URL itself over https (http on an onion) + const scheme = /^(lnurlp|lnurlw):\/\/(.+)$/i.exec(s); + if (scheme) { const url = (/^[^/]+\.onion(\/|$)/i.test(scheme[2]) ? 'http://' : 'https://') + scheme[2]; return { kind: 'lnurl', url, lnurlBech32: safeEncode(url), pk }; } // An npub/hex pubkey — the caller resolves lud16/lud06 from the profile and // calls fromProfile() below; here we just report the shape. const npk = parseNostrPubkey(s); @@ -92,10 +99,14 @@ async function fetchJson(url, ms = 8000) { } // GET the LNURL-pay params. Normalizes the bits we use; keeps `callback`. +// An lnurl that turns out to be a withdraw (LUD-03) is not an error here: +// the thrown error carries its terms (`withdraw`) for the caller to take up. export async function fetchPayParams(url) { const d = await fetchJson(url); if (!d || d.tag !== 'payRequest' || !d.callback) { if (d && d.status === 'ERROR') throw new Error(d.reason || 'LNURL error'); + const w = withdrawParamsOf(d); + if (w) { const e = new Error('a Lightning withdraw, not a payment'); e.withdraw = w; throw e; } throw new Error('not a Lightning pay endpoint'); } return { @@ -134,3 +145,71 @@ export async function requestInvoice(params, { amountMsat, zapRequest = null, ln if (!d.pr || typeof d.pr !== 'string') throw new Error('no invoice returned'); return d.pr; } + +// ---- LNURL-auth (LUD-04): a login challenge, not a payment ---- +// An lnurl whose URL carries tag=login and a 32-byte k1. Pasted into Send +// and taken for a payment, their server answered "no sig query variable +// provided" (Stacker News, 2026-10-16). action: login | register | link | auth. +export function parseLnurlAuth(input) { + const s = (input || '').trim().replace(/^lightning:/i, ''); + if (!/^lnurl1[ac-hj-np-z02-9]+$/i.test(s)) return null; + let url; + try { url = new URL(decodeLnurl(s)); } catch { return null; } + if (url.searchParams.get('tag') !== 'login') return null; + const k1 = (url.searchParams.get('k1') || '').toLowerCase(); + if (!/^[0-9a-f]{64}$/.test(k1)) return null; + const action = /^(register|login|link|auth)$/.test(url.searchParams.get('action') || '') ? url.searchParams.get('action') : 'login'; + return { url: url.href, domain: url.hostname, k1, action }; +} +// The linking key for a domain (LUD-05): from the wallet's master key, +// m/138'/0 is the hashing key; its HMAC-SHA256 of the domain, read as four +// 32-bit numbers, names the path m/138'/<n1>/<n2>/<n3>/<n4>. The same +// wallet is the same user on a site, every time, and a different one on +// every other site. +export function lnurlAuthKey(master, domain) { + const hashing = master.derive("m/138'/0").privateKey; + const mac = hmac(sha256, hashing, new TextEncoder().encode(domain)); + const dv = new DataView(mac.buffer, mac.byteOffset, 16); + let key = master.derive("m/138'"); + for (const o of [0, 4, 8, 12]) key = key.deriveChild(dv.getUint32(o)); + return key; +} +// Sign the challenge (ECDSA over k1, DER-encoded) and call the URL back with +// sig and key. Resolves on the server's OK; throws its reason otherwise. +export async function lnurlAuthLogin(auth, key) { + const sig = secp256k1.sign(hexToBytes(auth.k1), key.privateKey); + const url = new URL(auth.url); + url.searchParams.set('sig', sig.toDERHex()); + url.searchParams.set('key', bytesToHex(key.publicKey)); + const d = await fetchJson(url.href); + if (!d || String(d.status || '').toUpperCase() !== 'OK') throw new Error((d && d.reason) || 'login refused'); + return { key: bytesToHex(key.publicKey) }; +} + +// ---- LNURL-withdraw (LUD-03): the other side asks to PAY us ---- +// Their terms: an amount range (msat), a callback and k1. We make an invoice +// for the amount chosen and hand it to the callback; they pay it. +export function withdrawParamsOf(d) { + if (!d || d.tag !== 'withdrawRequest' || !d.callback || !d.k1) return null; + const min = Math.max(0, Number(d.minWithdrawable) || 0), max = Number(d.maxWithdrawable) || 0; + if (!(max > 0)) return null; + let domain = ''; + try { domain = new URL(d.callback).hostname; } catch {} + return { callback: d.callback, k1: String(d.k1), minMsat: min, maxMsat: Math.max(min, max), description: String(d.defaultDescription || '').slice(0, 200), domain }; +} +export async function fetchWithdrawParams(url) { + const d = await fetchJson(url); + const w = withdrawParamsOf(d); + if (!w) { if (d && d.status === 'ERROR') throw new Error(d.reason || 'LNURL error'); throw new Error('not a Lightning withdraw'); } + return w; +} +// Hand them the invoice to pay. Their OK means they have it, not that it is paid. +export async function submitWithdraw(params, invoice) { + const url = new URL(params.callback); + url.searchParams.set('k1', params.k1); + url.searchParams.set('pr', invoice); + const d = await fetchJson(url.href); + if (!d || String(d.status || '').toUpperCase() !== 'OK') throw new Error((d && d.reason) || 'withdraw refused'); + return true; +} + diff --git a/src/style.css b/src/style.css index a877e99..4a9b191 100644 --- a/src/style.css +++ b/src/style.css @@ -1505,8 +1505,14 @@ body::after { .mp-dots i { width: 7px; height: 7px; border-radius: 50%; background: rgba(255, 255, 255, .38); box-shadow: 0 0 3px rgba(0, 0, 0, .5); transition: background .15s, transform .15s; } .mp-dots i.on { background: #fff; transform: scale(1.15); } .mp-media { max-width: 100%; max-height: 100%; width: 100%; height: 100%; object-fit: contain; display: block; user-select: none; -webkit-user-select: none; } -/* a picture pinches to zoom (attachZoom); one finger at 1× is the pager's swipe */ -.mp-slide img.mp-media { touch-action: pan-x pan-y; transform-origin: center center; will-change: transform; } +/* a picture pinches to zoom (attachZoom); one finger at 1× is the pager's swipe. + Only the slide at rest gets its own layer for that: one on every picture + kept a full-size texture per slide, and a flight past them stuttered. */ +.mp-slide img.mp-media { touch-action: pan-x pan-y; transform-origin: center center; } +.mp-slide.mp-cur img.mp-media { will-change: transform; } +.mp-slide.mp-gone img.mp-media { display: none; } +.mp-missing { display: flex; flex-direction: column; align-items: center; gap: 6px; color: rgba(255, 255, 255, .55); font-size: 15px; text-align: center; padding: 20px; } +.mp-missing-ico { font-size: 44px; opacity: .5; } /* nothing but the picture until a tap */ .mp-meta, .mp-top { opacity: 0; pointer-events: none; transition: opacity .18s; } .media-pager.show .mp-meta, .media-pager.show .mp-top { opacity: 1; pointer-events: auto; } |