Feed video: fewer "To exit full screen" notices, and a YouTube clip takes one tap. Adam: Chrome's "v3.coinos.io – To exit full screen, drag from the top and touch the back button" shows every time, and a YouTube clip needs its own small full-screen icon. The notice is Chrome's, put up whenever a page goes full screen; a page can't turn it off, so the app goes full screen less. In the installed app (display-mode standalone, or opened from an android-app:// referrer) there is no address bar and the pager already fills the window, so it no longer goes full screen: a wide clip asks the screen to turn without it, and only if that's refused (the browser may allow turning only in full screen) goes full screen — the notice then, but the clip on its side; the screen is let go past that clip, or on closing. A browser tab goes full screen as before. A feed clip's own control bar loses its full-screen button (controlslist=nofullscreen): a tap on the clip is the way, into the pager. YouTube: the player's taps never reach the page, so a layer over a playing clip's picture takes them, leaving YouTube's control bar along the bottom to YouTube; one tap on it — or on the still — plays with sound and takes the clip's box full screen, turned on its side (unMute + playVideo through the iframe API for a player autoplaying muted); full screen the layer steps aside, so all of YouTube's controls are there. YouTube can only fill the screen through Chrome's full screen, so its notice still shows there. tools/fullscreen-notice-test.js (installed app: no full screen, the screen turned and let go, the fallback when turning is refused; no full-screen button on feed clips); tools/youtube-tap-test.js (YouTube stood in for: autoplaying muted, a tap on the control bar stays YouTube's, one tap full screen with unMute and playVideo, the layer aside full screen and back after; with Data Saver, the still to full screen with sound); video-unmute-test stubs ui for its slice of videoNode.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01KPw21NEpWeTGu6swVASmBt

1 files changed, 51 insertions, 10 deletions

diff --git a/src/features/messages.js b/src/features/messages.js
index 6e977af..b09aa17 100644
--- a/src/features/messages.js
+++ b/src/features/messages.js
@@ -7615,7 +7615,10 @@ export function messagesFeature(ctx) {
     // play button: no seek bar, no sound button. Without autoplay the
     // player's own controls are the way in, so they stay.
     const idle = autoplayOk() && !wokeClips.has(url);
-    const v = h('video', { src: playSrc(url), class: 'note-video', controls: idle ? undefined : true, poster: videoThumbs.get(url) || (videoInfo.get(url) || {}).image || serverThumb(url),
+    // In the feed a tap on the clip opens the pager, so the player's own
+    // full-screen button (Chrome's full screen: no next clip, and its notice)
+    // is left off its bar there.
+    const v = h('video', { src: playSrc(url), class: 'note-video', controls: idle ? undefined : true, controlslist: ui.chatOpen && ui.msgView === 'feed' && !ui.noteThread && !ui.profilePk ? 'nofullscreen' : undefined, poster: videoThumbs.get(url) || (videoInfo.get(url) || {}).image || serverThumb(url),
       preload: 'none', playsinline: true, muted: loud ? undefined : true,
       style: stable ? videoBoxStyle(feedMedia(url)) : undefined,
       // learned now, used by the next paint of any row with this clip
@@ -7741,27 +7744,44 @@ export function messagesFeature(ctx) {
       f.allowFullscreen = true;
       f.onload = () => { try { f.contentWindow.postMessage(JSON.stringify({ event: 'listening', id: vid }), '*'); } catch {} };
       box.append(f);
+      // a tap on the picture is ours, not the player's (whose taps the page
+      // never sees): it takes the clip full screen — YouTube's own control
+      // bar along the bottom stays YouTube's. Full screen, this steps aside.
+      box.append(h('div', { class: 'yt-shield', 'aria-hidden': 'true' }));
       if (muted) {
         let on = false;
         const btn = soundBtn(() => { on = !on; btn.setSound(on); post(box, on ? 'unMute' : 'mute'); if (on) post(box, 'playVideo'); });
+        box._soundOn = () => { on = true; btn.setSound(true); };
         box.append(btn);
       }
     };
-    const frame = h('div', { class: 'yt-embed' },
+    // One tap, as with any clip in a post: it plays, with sound, full screen
+    // (turned on its side). The still loads the player first; a player
+    // already going (autoplayed, muted) is unmuted and carried on.
+    const full = (box) => {
+      const go = box.requestFullscreen || box.webkitRequestFullscreen;
+      if (!go) return;
+      Promise.resolve(go.call(box, { navigationUI: 'hide' }))
+        .then(() => screen.orientation?.lock?.('landscape').catch(() => {})).catch(() => {});
+    };
+    const tapped = (e) => {
+      if (e.target.closest('.yt-open, .vid-sound, iframe')) return;
+      e.stopPropagation(); e.preventDefault();
+      const box = e.currentTarget;
+      if (!box.dataset.playing) load(box, false); // a tap means sound
+      else { post(box, 'unMute'); post(box, 'playVideo'); if (box._soundOn) box._soundOn(); }
+      full(box);
+    };
+    const frame = h('div', { class: 'yt-embed', onClick: tapped },
       h('img', {
         class: 'yt-poster', loading: 'lazy', alt: '',
         src: !feedPaint || feedMedia('https://i.ytimg.com/vi/' + vid + '/hqdefault.jpg')
           ? 'https://i.ytimg.com/vi/' + vid + '/hqdefault.jpg' : undefined,
         onError: (e) => { e.target.style.display = 'none'; },
       }),
+      // (its tap is the box's: play, full screen)
       h('button', {
-        class: 'yt-play', 'aria-label': t('playVideo'), title: t('playVideo'),
-        onClick: (e) => {
-          e.stopPropagation();
-          const box = e.currentTarget.parentElement;
-          if (!box || box.dataset.playing) return;
-          load(box, false); // a tap means sound
-        },
+        class: 'yt-play', type: 'button', 'aria-label': t('playVideo'), title: t('playVideo'),
       }, h('span', { style: 'display:flex', html: '<svg width="30" height="30" viewBox="0 0 24 24" fill="currentColor" style="display:block"><path d="M8 5v14l11-7z"/></svg>' })),
       h('a', {
         class: 'yt-open', href: url, target: '_blank', rel: 'noopener noreferrer',
@@ -11770,7 +11790,27 @@ export function messagesFeature(ctx) {
     } catch { return false; }
   }
   let pagerFs = false; // the pager put the page full screen (and so takes it back out)
+  let pagerLock = false; // the pager turned the screen (and so lets it go)
+  // The installed app (the Play/Zapstore build, or a home-screen install)
+  // has no address bar: the pager already fills its window. Going full
+  // screen there only hid the system bars, and every time it did Chrome put
+  // up its "To exit full screen, drag from the top…" notice, which a page
+  // can't turn off. So there it doesn't: a wide clip asks the screen to turn
+  // without it, and goes full screen only if that's refused (the browser
+  // allows turning only in full screen) — the notice then, but the clip on
+  // its side.
+  const installedApp = () => {
+    try { return matchMedia('(display-mode: standalone), (display-mode: fullscreen), (display-mode: minimal-ui)').matches || document.referrer.startsWith('android-app://'); } catch { return false; }
+  };
   function pagerFullscreen(wide) {
+    if (installedApp()) {
+      if (!wide || !screen.orientation?.lock) return;
+      screen.orientation.lock('landscape').then(() => { if (ui.mediaPager) pagerLock = true; else screen.orientation.unlock?.(); }, () => pagerGoFullscreen(true));
+      return;
+    }
+    pagerGoFullscreen(wide);
+  }
+  function pagerGoFullscreen(wide) {
     const d = document.documentElement;
     const go = d.requestFullscreen || d.webkitRequestFullscreen;
     if (!go || fsElement()) return;
@@ -11782,6 +11822,7 @@ export function messagesFeature(ctx) {
   }
   const exitFs = () => { try { (document.exitFullscreen || document.webkitExitFullscreen || (() => {})).call(document)?.catch?.(() => {}); } catch {} };
   function pagerUnFullscreen() {
+    if (pagerLock) { pagerLock = false; try { screen.orientation?.unlock?.(); } catch {} }
     if (!pagerFs) return;
     pagerFs = false;
     try { screen.orientation?.unlock?.(); } catch {}
@@ -12332,7 +12373,7 @@ export function messagesFeature(ctx) {
         if (pager.cur && pager.cur !== e.target) {
           const v = pager.cur.querySelector('video.mp-media'); if (v) v.pause();
           // past the clip it opened on, the screen follows the phone again
-          if (pagerFs) { try { screen.orientation?.unlock?.(); } catch {} }
+          if (pagerFs || pagerLock) { pagerLock = false; try { screen.orientation?.unlock?.(); } catch {} }
           if (pager.fromFeed && video) el.classList.remove('show');
         }
         pager.cur = e.target;