Buttons that rest on surfaceElevated used surfaceHover for their hover
fill: a 6% white wash meant for rows that rest transparent. Over an
elevated button it lands DARKER than the rest fill — on a modal's dark
ground the Cancel/Save/footer buttons went near-black under the pointer.
QbzTheme gains surfaceElevatedHover (a lift of surfaceElevated, derived
so every palette has it), its ambient half-alpha twin, and the
elevatedFill / elevatedHoverFill pair an ambient-aware control paints.
Every site with the old pairing (65 across modals, toolbars, selects,
circle actions, chips and cards) now hovers to the lift.
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A property named `on<Upper>` is filed as a signal handler as soon as a
sibling member `<upper>` exists: its initializer never binds, it sits at
the type default, and nothing warns. `PurchasesView.qml` declared
`onAlbums` next to `albums`, so the Albums tab bound `[]` once and never
re-evaluated, which blanked Purchases for every account with real
purchases. Reproduced standalone with the `qml` runtime: the identical
expression under another name reads `true`.
Rename it to `albumsTab` and the four other `on<Upper>` properties
(`collectionsTab`, `surfaceTint`, `accentFloor`, `litColor`) so the rule
can be exact, and add `qml_on_prefixed_property_audit.py` to the four
QML audit sites (qt-run, cargo-test, test-crates, qt-gate-windows).
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The disc was btnEnabled: false with a comment saying neither engine had a seam
on a Qt bridge. Both do now. ArtistPageView.slint:426-461 opens a two-row
dropdown — QBZ Radio (the local qbz-radio pool builder) and Qobuz Radio
(/radio/artist) — and that is what this restores. The smart arm already
shipped behind Discover's spotlight RADIO card and simply was not wired here;
the Qobuz arm is new (get_radio_artist + the same enrich_radio_tracks the album
radio uses, because its track objects are just as bare).
Both labels already exist in all eight catalogues, so no new msgid.
AND THE WAIT IS VISIBLE NOW. A radio is a fetch, an enrich and a queue write;
until the first track resolves nothing on screen moves, so the click read as
dead. QbzCircleAction gains the `loading` arm the reference already has
(CircleAction.slint:18/:77) and QbzHome.radioPending carries the KEY of the
radio being built — "album:<id>" or "artist:<id>" — so the Discover rail spins
only the station that was clicked instead of all six.
The spinner rides QbzShell.pulseMs, NOT a RotationAnimation. Qt Quick has no
partial redraws, so a continuous animator presents the whole window at display
rate (~1.2% GPU per present on the owner's hybrid laptop); a 60 Hz spin for the
seconds a radio takes is exactly the bill the pulse law refuses. 12 degrees per
~30 Hz tick, and the Connections is disabled unless the button is spinning and
on screen, so at rest it writes nothing. theme/QbzSpinner.qml still uses a
RotationAnimation and is deliberately not reused.
On the cards, `loading` also pins the hover disc up: it only exists on hover,
so it vanished the moment the pointer left after a click, which is what made
the click look swallowed.
A RadioGuard disarms the key in Drop, so a bad id, a network error and an empty
result all clear it. A disc spinning forever is worse than no indicator.
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Accumulated qt-frontend work from the 2026-08-11/12 sessions (cc),
uncommitted until now: the app-wide dynamic background in both modes
(AmbientField with GPU/Canvas arms, AppShell layering, ambient palette
pipeline), the wave-1 clip/batch sweep across the tree (alpha batches
449 -> 327, reproducible), the rounded-cover and icon-tint arms, and
scripts/qt-batches.sh (batches + presents/s sampler).
The GPU behaviour of these pieces was finalized in the follow-up pulse
commits; see qbz-nix-docs/qt-frontend/2026-08-11-scenegraph-batches/
GPU-COST-INVESTIGATION.md for the full campaign.
km
Two defects with one cause: a tint name that means a frozen hex.
"primary" is the legacy alias of literal #ffffff, not Theme.text-primary,
so every control passing it drew a white glyph. On the eleven light
themes that is white-on-light -- the header back/forward chevrons, the
sidebar toggle and the carousel arrows the owner marked. They now pass
the theme-following names, which icon_tint_qt bakes at runtime.
The stale `hslLightness > 0.5 ? "primary" : "black"` workarounds that
predate the runtime tinter collapse into those names, and the qrc floor
underneath them becomes polarity-aware: dir_for() returns "" whenever
the cache dir is unavailable, a bake fails or the theme document has not
been published, and that path used to resolve textPrimary straight back
to the white bake -- reproducing the bug it was fixing, app-wide, in the
degraded state.
On accent fills the fix is a deviation from Slint, approved by the owner
after measurement. A fixed white glyph on Theme.accent falls under 2.6:1
on 16 of the 35 shipped palettes, including high-contrast at 1.70:1 and
wcag-dark at 1.82:1 -- the two themes whose reason to exist is contrast.
Slint hardcodes #ffffff there (CircleAction.slint:72 and three others),
so the bug is upstream. accentText alone is not the answer either: it is
picked for the theme's text ramp and gives 2.56:1 on Rose Pine Dawn,
worse than the black it replaces. So QbzTheme picks the best-contrast
tint by real sRGB luminance against the live accent, and the labels
beside those glyphs use its colour twin -- BrowseGenreButton and
LibraryView were drawing a white glyph next to an accentText label
inside the same pill.
Rounds out the two parity items the same files owe: QbzNavButton gains
the ambient arm from Carousel.slint (wired at the six carousel sites,
not left dead), and QbzCircleAction rounds its glyph to whole pixels the
way CircleAction.slint does.
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**Track-row buttons did nothing.** Declaration order is z-order in QML, and the
row-wide MouseArea added for right-click was declared last — so it covered the
heart, cloud and menu buttons and swallowed their presses.
propagateComposedEvents cannot rescue that: a press is not a composed event,
which is why only the row's own double-click still worked.
**Covers appeared only after a scroll.** Three compounding defects, not one. The
window report fired on contentY and on model change, both of which happen while
the tab body is still hidden behind its loading flag, so the report that
mattered hit the not-visible early return and was discarded with nothing to
re-fire it. The debounce reset on every change, so a burst of mount-time reports
kept pushing its trailing edge out. And a single pending slot meant that when
two surfaces are mounted at once — the artist rail and that artist's grid — the
second overwrote the first, so one pane was never requested at all. Eviction had
the same shape: each report deleted everything outside its own array, so the two
panes deleted each other's covers.
**Latest release had no cover** because the artist page's collector skipped it,
along with Appears On and the playlists strip.
**Light themes.** The mechanism is Slint's, from 2.0.2 and issue #638: the
on-surface arm on circle actions, header-light deciding the header foreground
only when a dark backdrop is actually painted, and the circular backing behind
the track-row play glyph. Ported as specified rather than approximated. Two
icons rendered in their SVG's own colour because they pointed at the raw asset
instead of a baked tint — a sweep found the rest of that class.
**Navigation flyouts** exist, one component serving both the sidebar and the
header nav modes.
**Filter by genre and the Discover sort now work**, everywhere the control is
drawn. The genre ids were already a parameter on the discover fetch that the
port always passed empty.
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**The empty album view.** Opening a local album from Library "All" landed on a
blank page. The mixed feed hands Qobuz and local albums to the SAME card, and
the card always called the catalog open — so a local id, which is a group key
or a filesystem path, went to /album/get and came back 404. It was in the
owner's log before this round as `get_album(/mnt/nas/…) returned 404`; what
changed is that clearing the stale document turned "shows the previous album"
into "shows nothing", which is how it surfaced. Routing now happens in
open_album itself, using the predicate the feed already uses to route
favourites, so every call site is covered at once instead of card by card.
**Header atmosphere.** Both detail pages get Slint's two-band gradient, tinted
from THIS page's artwork through the ported header_tint — not the now-playing
ambient triad, which is a different subject with a different algorithm.
**Artist page.** The catalog/library toggle existed but was broken: a
hand-rolled copy of the shared tab bar whose delegate walked the wrong parent
chain, so it threw on every evaluation and never took its active colours. It
now mounts the shared control. Added the JUMP TO label, the tab-strip search
with the client-side filter it drives, and the year under release-section
albums. The Network panel ran the full window height and never auto-opened; it
is bounded below the tab strip now and opens unless the content is constrained,
as Slint does. The action circles were the wrong size with the wrong glyph
colour and no overlay arm — which would have left them dark-on-dark once the
gradient landed.
**Quality in track rows.** The column rendered a bare tier; it carries the
badge now, in the one shared row component every surface mounts. playlist_qt
was the only producer not emitting the bit-depth line.
**Skeletons hand over instead of disappearing.** They cleared when the PATH
arrived, but the image still had to load and rasterize after that, so the
placeholder vanished and left an empty cell. They now wait for the image to be
ready.
**Local covers.** Most local covers ARE already the scanner's thumbnail, but
re-hashing their path produced a different filename, so each one was decoded,
resized to its own size and re-encoded into a duplicate before being shown.
That was most of the wait.
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Two fronts of the modularization, both gated green before this commit.
QML leaves the flat qml/ directory for seven modules: cards, controls,
rows, settings, shell, theme, views. Only Main.qml and LoginScreen.qml
stay at the root. build.rs matches the tree exactly (55 files), relative
imports and asset paths were re-anchored for the new depth.
The QbzBridge God-object starts breaking up: QbzSession, QbzShell,
QbzPlayer, QbzQueue and QbzHome are now their own #[cxx_qt::bridge]
singletons, each with its own OnceLock<CxxQtThread> and ui() hop, booted
in order from Main.qml. Bridge files stay directly under src/ because
cxx-qt-build only accepts rust_files from one directory (QTBUG-93443).
bridge.rs keeps 5.5 domains (library, album/artist, settings,
integrations, search, playlist) and dies once they are split out.
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vicrodh