mirror of
https://github.com/lhns/steam-frame-nix.git
synced 2026-10-06 03:00:13 +02:00
Pierre Kisters
63d589c261
The relay no longer enables the Runtime domain on systemui (bindings work without it; it streamed the page's console and context events). Full-rate frames only while a tip is within 10 cm of the keyboard or a trigger is pulled (not for a laser resting on it); idle frames every 1 s instead of 250 ms. Nothing while the keyboard is hidden.
60 lines
2.4 KiB
JavaScript
60 lines
2.4 KiB
JavaScript
// hub.js: the controller frames in Steam's SharedJSContext
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// (vr-keyboard-controllers.nix). A single expression for consumer patches'
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// extraArgs (like lib/hooks.js): installs window.__sfuiControllers unless an
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// equal or newer VERSION is there (a newer one takes over the subscribers)
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// and evaluates to it. relay.mjs calls frame(f) with bridge-patch.js's
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// frames and lost() when the SteamVR side goes away.
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// subscribe(fn) -> unsubscribe fn(frame) per frame, fn(null) when lost
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// last the last frame (null: none / lost)
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// Each frame's hand points (tip, ray) get the keyboard page's px: x, y
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// (CSS px of the keyboard popup) and onKeyboard (inside the page), if the
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// keyboard popup exists. Frames come at up to ~90 Hz while a hand's tip is
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// within 10 cm of the keyboard or its trigger is pulled, else every 1 s, and
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// only while SteamVR shows the keyboard (then one with keyboard null).
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(() => {
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const VERSION = 1;
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const G = globalThis;
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const have = G.__sfuiControllers;
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if (have && have.version >= VERSION) return have;
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const subs = have?.subs ?? new Set();
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const errors = have?.errors ?? { count: 0, last: null };
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let win = null, winAt = -Infinity;
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function keyboardWindow(now) {
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if (now - winAt < 1000 && win && !win.closed) return win;
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winAt = now;
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win = [...(G.g_PopupManager?.GetPopups?.() || [])].find((p) => p.window?.document.querySelector('[data-key]'))?.window ?? null;
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return win;
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}
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const px = (p, w, h) => {
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if (!p) return p;
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const x = p.u * w, y = p.v * w;
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return { ...p, x, y, onKeyboard: x >= 0 && y >= 0 && x < w && y < h };
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};
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function deliver(f) {
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hub.last = f;
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for (const fn of [...subs]) {
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try { fn(f); } catch (e) { errors.count++; errors.last = String(e?.stack ?? e); }
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}
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}
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function frame(f) {
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if (!f || typeof f !== 'object') return;
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const now = performance.now(), w = f.keyboard ? keyboardWindow(now) : null;
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if (w?.innerWidth) {
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for (const h of ['left', 'right']) {
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const x = f.hands?.[h];
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if (x) f.hands[h] = { ...x, tip: px(x.tip, w.innerWidth, w.innerHeight), ray: px(x.ray, w.innerWidth, w.innerHeight) };
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}
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}
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f.receivedAt = now;
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deliver(f);
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}
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const hub = {
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version: VERSION, subs, errors, last: null,
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frame, lost: () => deliver(null),
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subscribe(fn) { subs.add(fn); return () => subs.delete(fn); },
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};
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G.__sfuiControllers = hub;
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return hub;
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})()
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