Emulator e2e of an image PiP (a QR PNG) found the image area always blank (box
background + title only). Pre-existing defect, also on main, independent of the
occlusion reparent.
Root cause in PipOverlay.show(): teardown() clears `current` to null, then
loadImageInto() captured `token = current` (null) as its drop-if-replaced guard,
but `current` was set to the new pip_id AFTER the media was built. The image
decode finishes on a background thread and posts back after show() returns, so
`token != current` (null != pip_id) was always true and every decoded bitmap was
dropped. Web PiPs and the box/title were unaffected, which masked it.
Fix: set `current = pip_id` before building media so loadImageInto's token
matches. Verified on emulator — a QR image PiP now renders over both a static
image and live YouTube (hardware screencap + the app's software view.draw
capture both show it).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The PiP overlay (#109) returned sent:1 and showed its title in `uiautomator
dump`, but nothing painted on screen while YouTube was playing. By elimination
(YouTube-specific, landscape so no off-screen transform, real on-screen bounds
in the dump) the cause is surface occlusion: pipLayout sat as the last child of
rootLayout — the SAME compositing band as R.id.youtubeWebView — so the playing
video surface drew over it.
Fix (task option 1a): reparent pipLayout out of rootLayout to the window
content (android.R.id.content) as a top-level sibling drawn after rootLayout, so
it composites above the WebView. MainActivity.mirrorTransformToPip() copies
rootView's orientation/wall transform onto it so corner positions still track
the rotated content (web/Tizen parity). show() also bringToFront()+
requestLayout()+invalidate() on attach (covers the cause-3 measure/visibility
path). Remote-view screenshots now capture the content root so the PiP is still
included.
Instrumentation (Phase 1, default OFF): PipOverlay.pipDebug paints a solid
magenta box + border with media on top (box paints even if media never loads)
and logs box/pipLayout/rootView/youtubeWebView geometry over device:log tag
"pip"; loadImageInto also logs on success. Toggled via device:command
{type:"pip_debug"} (routed through MainActivity.onCommand).
Server: POST /api/pip and the clear handler log one concise [pip] dispatch line
(target + sent/offline) so journalctl shows PiP activity.
Validated end-to-end on an emulator (pixel10/API34) paired to an isolated local
server with YouTube playing: no crash, the PiP box composites above the live
video frame (center + top-right), clear removes it, and the portrait transform
mirror rotates the overlay with the stage (no off-screen). The Fire TV
hardware-overlay punch-through still needs real hardware (emulator composites
video inline); pipDebug + docs/109-android-pip-visibility.md cover that.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
