dev/calibration.png is a synthetic grid (concentric color rings, corner
markers, a crosshair) and dev/calibration_test.star runs it through the
same zoom logic as the real _art_widget, so cropping can be checked
visually without depending on what a live station happens to be playing.
This is what was used to find and verify the centered-zoom fix.
Zoom level is a dropdown (Off/Subtle/Moderate/Strong) controlling how far
the album art zooms in during its breathing effect; Off skips the
animation.Transformation entirely and just shows a static crop.
Color schemes now match SUB/WAVE's own web UI theme picker (Blueprint,
Classic Dark, Classic Light, Cyberpunk, Flare, Recon, Signal, Vinyl) so a
station can mirror its own site theme on the device, including a
background fill that was previously hardcoded to black.
The corner-reveal zoom scaled down from 1.0 toward ~0.71 (via Translate
to shift toward a corner), which showed up on a real device as a black
border cutting into the art. Empirical testing against the actual Row
layout at native canvas size showed the outer Box auto-fits an oversized
child at Scale(1.0, 1.0), so scaling down from there shrinks the already-
fitted image further and exposes background outside its bounds. Scaling
up only ever crops further into the image, which is always safe.
This drops Translate and the per-track corner selection (animation.Scale
pivots at the top-left corner by default with no way to change it -- an
explicit origin parameter was tried and had no effect), so the effect now
always zooms into the top-left corner instead of a track-dependent one.
poprhythm