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feat(playback): add independent subtitle text opacity and a gray color option - #539
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…r option White subtitle text against a dark background is uncomfortably bright on an OLED or HDR display. The subtitle appearance settings had no way to dim the text itself: backgroundOpacity only affects the box behind it, and the font color palette had no gray option. Adds a textOpacity field (1-100, default 100) alongside the existing backgroundOpacity, applied to the text color independently of the background, plus a gray swatch in the font color palette, across iOS, tvOS, and macOS. Both opacity controls moved from a slider to a typed percent field (iOS/macOS) or a D-pad picker (tvOS, matching the existing paradigm) after a slider proved too imprecise to hit low values; the new PercentField is now a single shared component instead of two copies that had already drifted. Also re-vendors the settings contract at manifest revision 13 (adding the missing per-key revision entries this exposed), extends the low-legibility warning to fire on near-zero text opacity, and fixes two contract tests that assumed every revision introduces a new key, which does not hold for a schema-only widening like this one. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe settings contract advances from revision 9 to 14 and adds or updates setting definitions and conformance cases. Subtitle appearance gains persisted text opacity, rendering support, and editing controls across iOS and tvOS. Writes use the known server revision to omit unsupported text-opacity data. ChangesSettings contract and subtitle appearance
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
actor Viewer
participant PercentField
participant SubtitleSettingsView
participant PlayerSettings
participant PlayerSettingsFlusher
participant AetherSubtitleRenderStyle
Viewer->>PercentField: Enter opacity percentage
PercentField->>SubtitleSettingsView: Commit validated value
SubtitleSettingsView->>PlayerSettings: Update subtitle appearance
PlayerSettings->>PlayerSettingsFlusher: Queue appearance write
PlayerSettingsFlusher->>PlayerSettingsFlusher: Filter textOpacity by server revision
PlayerSettings->>AetherSubtitleRenderStyle: Apply subtitle appearance
Suggested reviewers: Merge Risk: ⚪ Minimal · up to Opacity pickers preserve synced values, and subtitle writes wait for server capability information before omitting unsupported fields. Both previously identified concerns are addressed; the change is mergeable subject to normal checks. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change stays within existing profile/device settings permissions and adds a bounded display preference. Compatibility controls preserve pending edits and omit unsupported fields. Server-side validation and capability handling during every server/profile transition remain incompletely verified, so the assessment is low rather than minimal risk. Retained concerns Security review detailsSecurity Blast Radius
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 53.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 45 functions across 18 files. (3 skipped: 3 unsupported.) ✨ Finishing Touches🧪 Generate unit tests (beta)
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- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @iosApp/iosApp/Screens/Player/tvOS/TVPlayerInfoHUD.swift:
- Around line 1506-1507: Update `textOpacityOptions` in `TVPlayerInfoHUD.swift`
to use 5% steps and include the current `textOpacity` whenever it falls outside
those options. In `PlayerSettingsSheet.swift` at lines 653–657, likewise add the
current `textOpacity` when missing from the stride options. In
`TVSettingsComponents.swift` at lines 127–128, change `textOpacity` into a
function that adds the current value when absent, so each picker retains its
synced selection.
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iosApp/iosApp/Networking/SettingKeys.generated.swiftis excluded by!**/*.generated.*
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iosApp/Tests/Fixtures/SettingsContract/SOURCEiosApp/Tests/Fixtures/SettingsContract/conformance.jsoniosApp/Tests/Fixtures/SettingsContract/manifest.jsoniosApp/Tests/SettingValuesAPITests.swiftiosApp/iosApp/Components/PercentField.swiftiosApp/iosApp/Networking/SettingKeyRevisions.swiftiosApp/iosApp/Screens/Player/AetherSubtitleRenderStyle.swiftiosApp/iosApp/Screens/Player/Sheets/PlayerSettingsSheet.swiftiosApp/iosApp/Screens/Player/Subtitles/SubtitleAppearance.swiftiosApp/iosApp/Screens/Player/Subtitles/SubtitleAppearancePreview.swiftiosApp/iosApp/Screens/Player/tvOS/TVPlayerInfoHUD.swiftiosApp/iosApp/Screens/Settings/SubtitleSettingsView.swiftiosApp/iosApp/tvOS/Screens/Settings/TVSettingsComponents.swiftiosApp/iosApp/tvOS/Screens/Settings/TVSettingsView.swiftiosApp/iosApp/tvOS/Screens/Settings/TVSubtitleSettingsView.swift
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…opacity # Conflicts: # iosApp/iosApp/Screens/Player/Sheets/PlayerSettingsSheet.swift # iosApp/iosApp/Screens/Settings/SubtitleSettingsView.swift
textOpacity was added to playback.subtitle_appearance's schema at manifest revision 13, but the key itself has been servable since revision 1 — a server between those (or one this session hasn't confirmed yet) has a schema validator that rejects the whole write for the one unknown member, failing every subtitle-appearance edit rather than just the new field. PlayerSettings now caches the manifest revision from each batched effective-values read and omits textOpacity from the wire payload below revision 13. The chosen value still applies locally. Also fixes the same off-cadence opacity picker issue found on the Android companion PR (Silo-Server/silo-android#413) at all four tvOS/macOS discrete pickers, commits a pending PercentField edit on view teardown (the number pad has no Done key), and merges upstream/main to resolve a conflict from Silo-Server#546 with the slider this PR already replaced. Found by CodeRabbit and Kody review on PR Silo-Server#539. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Addressing the review feedback: Kody (high) — writing CodeRabbit — tvOS/macOS opacity pickers omit the current value when it's off their step cadence. Same class of issue as the Android companion PR (Silo-Server/silo-android#413). Fixed at all four sites ( Kody (medium) — Kody (medium) — Also merged Rebuilt and retested all three schemes ( |
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Inline comments:
Review comments at @iosApp/iosApp/Screens/Player/PlayerSettings.swift:
- Around line 1036-1040: Clear knownManifestRevision at the start of
refreshFromServer so a failed refresh for a new server or profile cannot reuse
the prior scope’s revision when normalizing later subtitle edits.
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📒 Files selected for processing (9)
iosApp/Tests/PlayerSettingsFlushTests.swiftiosApp/iosApp/Components/PercentField.swiftiosApp/iosApp/Screens/Player/PlayerSettings.swiftiosApp/iosApp/Screens/Player/Sheets/PlayerSettingsSheet.swiftiosApp/iosApp/Screens/Player/tvOS/TVPlayerInfoHUD.swiftiosApp/iosApp/Screens/Settings/SubtitleSettingsView.swiftiosApp/iosApp/tvOS/Screens/Settings/TVSettingsComponents.swiftiosApp/iosApp/tvOS/Screens/Settings/TVSettingsView.swiftiosApp/iosApp/tvOS/Screens/Settings/TVSubtitleSettingsView.swift
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knownManifestRevision lives on PlayerSettings.shared, which survives server and profile switches. A revision confirmed for the previous scope stayed cached if the new scope's refresh failed or hadn't completed, so a subtitle appearance edit right after switching to an older server could still send textOpacity and get the whole write rejected — exactly the failure the previous commit meant to prevent, just from a different angle. Clearing the cached revision at the top of refreshFromServer(), before anything else runs, means a failed or pending refresh always falls back to the conservative "unknown" gate. Found independently by CodeRabbit and Kody review on PR Silo-Server#539. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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The server moved subtitle textOpacity from manifest revision 13 to 14, because revision 13 went to the advisory_age overlay id. Copy manifest.json and conformance.json byte-for-byte from the server commit that made the move, regenerate the Swift bindings from it, and point SOURCE at that commit. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A server below manifest revision 14 rejects any subtitle_appearance write that contains textOpacity, then the next refresh reverts the whole appearance. The client stripped the member at enqueue time against a gate of 13, so a revision-13 server still received it. Stripping at enqueue also lost data: refreshFromServer clears the known revision before it reads, so an edit made during that read queued a stripped object that replaced the stored one on a current server. The flusher now records the revision from each effective-values read and decides at send time. It strips members the server's revision predates and holds a subtitle_appearance write while the revision is unknown. A refresh flushes the held write once its read succeeds. The one-time legacy import goes through the same path and compares its value as the server would store it. The gated members and their revisions live in SettingKeyRevisions.swift, and a conformance test ties them to the vendored manifest's notes. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The HUD built its text opacity options with a 25-point stride starting at 1, which yields 1, 26, 51 and 76. Once the value changed, 100% could not be picked again, and 1% (invisible text) was offered. Text opacity now offers 25, 50, 75 and 100. Background opacity keeps Off through 100. Both pickers still add the current value when another client stored one between the steps. The HUD and tvOS Settings pickers now share one helper for the option values, with a unit test. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A server below manifest revision 14 never receives textOpacity, so a value picked there only lasts until the next refresh. Hide the control on the iOS and macOS subtitle settings screen, the in-player settings sheet, tvOS subtitle settings and the tvOS player HUD when the server is known to predate it. While the revision is unknown, the control stays visible. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
- iOS: the number pad has no return key, so add a keyboard toolbar Done button that commits and ends editing. - Commit only a draft the user typed. onSubmit, focus loss and onDisappear can all fire for one edit. The later calls no longer repeat the write or put a stale draft back over a value synced in the meantime. - A synced value replaces the draft unless the user is mid-edit. - macOS: accept surrounding whitespace and a trailing "%". Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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A refresh cleared the known manifest revision before reading it again, so one refresh that failed offline held every later subtitle appearance write until the next successful read. The revision is now forgotten only when the server, profile or device changes. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Thanks for this. I pushed maintainer follow-ups to your branch: merged main, re-vendored the contract at revision 14 (the server's revision 13 went to another change), moved the |
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A refresh awaits a flush and a read, and the read goes to whichever server, profile and device are active when it is sent. If the scope changed in between, the revision was recorded for the old scope, and returning to it reused the other server's revision. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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2 participants
Problem
Related issue: Silo-Server/silo-server#369
Validation tasks: changes #313 C1; changes #314 C1
White subtitle text is uncomfortably bright on an OLED or HDR display in a dark room, and there was no way to dim it:
backgroundOpacityonly affects the box behind the text, and the font color palette had no gray. Silo-Server/silo-server#369 asked for a gray default for this reason.This adds a server-synced
textOpacity(1–100, default 100) toSubtitleAppearance, applied to the text color independently of the background, and a gray swatch, on iOS, tvOS and macOS. It needs Silo-Server/silo-server#1652, which adds the field to the settings contract at manifest revision 14.Approach
textOpacityis separate from the existingfontOpacity, which stays local and comes from the system's captioning settings.AetherSubtitleRenderStylemultiplies the two.A server below revision 14 rejects a subtitle appearance that includes
textOpacity, and the rejected write is retired and then reverted by the next refresh. So the flusher decides at send time, from the revision the last settings read reported: below 14 it sends the appearance withouttextOpacity; while the revision is not known it holds the write and sends it after the next successful read. The legacy settings import goes through the same path. On a server known to be older, the text opacity control is hidden on every surface.On iOS and macOS, both opacity controls are typed percent fields (
PercentField) instead of sliders; a slider is too coarse at the low end. The field commits once, only when the user typed, follows a value synced from another client when not being edited, and has a Done button on the iOS number pad. tvOS keeps its D-pad pickers; text opacity offers 25–100% in 25-point steps plus any stored value between them.The low-legibility warning also fires below 30% text opacity, since a box or outline does not restore the fill's contrast.
Re-vendors the settings contract fixtures at revision 14.
Validation
xcodebuild buildfor Silo (iOS), SiloTV and SiloMac: passxcodebuild testfor the Silo scheme: pass (2247 tests, 2 skipped), including new tests for the revision gate, holding a write until the revision is known, the refresh race, legacy import, and the tvOS opacity options; a conformance test ties the gate to the vendored manifesttextOpacity, with no rejected writeRisks
AI Disclosure
/code-review(high effort) and fixed missing tvOS controls, the legibility warning ignoring the new field, and a duplicatedPercentField. A maintainer review with claude-opus-5-5 found the revision-13 gate collision, a refresh race that sent a stripped value to a server that stores it, the legacy import bypassing the gate, a tvOS picker that could not return to 100%, and a percent field that committed stale values; all are fixed here.🤖 Generated with Claude Code
Note
Add independent subtitle text opacity setting and gray color option
textOpacitymember (default 100, clamped 1–100) toSubtitleAppearanceand gates it to manifest revision 14, exposing it on iOS, tvOS settings, and the tvOS player dialog only when the server supports it.AetherSubtitleRenderStyleis nowfontOpacity * textOpacity, and appearances with text opacity below 30 are flagged as low legibility.SettingKey.wireValuestrips thetextOpacitymember when sending to servers older than revision 14, andPlayerSettingsFlusherholds revision-gated writes until a server manifest revision is known, retrying them after the effective-values read.PercentFieldcomponent that parses integer percentages with optional whitespace and trailing%.textOpacitywhile retaining the value locally.Macroscope summarized d0e2ae0.