feat(playback): add independent subtitle text opacity and a gray color option - #1652
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…r option White subtitle text against a dark background can be uncomfortably bright on an OLED or HDR display. Silo's subtitle appearance contract had no way to dim subtitle text — backgroundOpacity only affects the box behind it — and the font color palette had no gray option. Adds textOpacity (1-100, default 100) to playback.subtitle_appearance, applied to the text color independently of the background, plus a gray swatch in the font color palette. Manifest revision 12 -> 13. Both opacity controls are now typed percentage fields instead of sliders, which proved too imprecise for values that matter at the low end. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…floor
Clearing the text or background opacity field and blurring computed
Number("") as 0, a valid-looking parse, so it clamped and saved the floor
value instead of reverting like any other invalid input. The in-player panel
saves on every change, so a stray clear could instantly persist near-invisible
subtitle text with no confirmation.
Also deduplicates the two near-identical opacity field components into a
shared usePercentDraft hook, and drops the slider thumb CSS the earlier
commit's PercentField/PercentInput switch left unused.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Organization UI Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (12)
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Included review availability: This review used your included allowance. Your plan provides up to 2 included reviews per hour; 1 remain after this review. 📝 WalkthroughWalkthroughThe settings contract advances to revision 14 and adds text opacity with a default of 100. Subtitle rendering applies text opacity to the font color. The web settings interface replaces opacity sliders with percentage inputs. ChangesSubtitle opacity
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Feature Suggested reviewers: Merge Risk: ⚪ Minimal · up to This adds an independent subtitle text-opacity setting with a fully opaque default, so existing stored settings render as before. The main known gap is that ASS/SSA subtitles ignore the appearance settings, which the author plans to track separately. No merge-blocking risk was found. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change adds a bounded subtitle preference while preserving existing defaults and write permissions in the inspected paths. No increased access or authority was demonstrated. Older-client compatibility and concurrent-save behavior remain incompletely established, leaving low residual risk. Retained concerns Security review detailsSecurity Blast Radius
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Full details: Docstring CoverageExplanation Docstring coverage is 46.15% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 13 functions across 9 files. (4 skipped: 4 unsupported.)
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @web/src/hooks/usePercentDraft.ts:
- Around line 23-26: In the valid-number branch of `commit` in
`usePercentDraft`, set the draft to the clamped percentage before calling
`onChange`, so the field displays the committed value even when the prop does
not change.
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📒 Files selected for processing (11)
contracts/settings/v1/conformance.jsoncontracts/settings/v1/manifest.jsoncontracts/settings/v1/schemas/subtitle-appearance.jsoninternal/settingskeys/keys.goweb/src/app.cssweb/src/components/settings/SubtitleAppearancePanelView.tsxweb/src/hooks/usePercentDraft.tsweb/src/lib/settingsConformance.jsonweb/src/lib/settingsContract.tsweb/src/lib/subtitleAppearance.tsweb/src/pages/settings/SubtitleAppearanceSettings.tsx
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- web/src/app.css
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Major validation change: #1158 C1 and #1159 C1 are still Not run. This PR adds an optional Suggested fix (no diff): update
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…ommit Typing an out-of-range number (e.g. 999 with a value already at 100) clamped and saved correctly but left the out-of-range text displayed, since the draft only synced back from the value prop, which didn't change. Set the draft on every valid commit instead. Found by CodeRabbit and Kody review on PR Silo-Server#1652. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Revision 13 went to the advisory_age overlay id (Silo-Server#1672) while this branch was open. A revision-13 server rejects textOpacity, so clients must gate it on 14. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The percent field committed on every blur, so tabbing through the panel created a device override the user never chose. Its draft also outlived a failed save and showed a value the player was not using, and Escape closed the panel before the typed value committed. The field now shows the live value except while editing, commits only a changed value, and blurs before the panel closes. A stored non-integer textOpacity falls back to 100, as the schema requires. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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 so the three PRs can land together:
The Apple and Android PRs gate on revision 14 to match. The description is updated. |
2 participants
Problem
Related issue: #369
Validation tasks: changes #1158 C1; changes #1159 C1; changes Silo-Server/silo-apple#313 C4; changes Silo-Server/silo-apple#314 C4; changes Silo-Server/silo-android#323 C4; changes Silo-Server/silo-android#324 C4 (the cross-client C4 checks need Silo-Server/silo-apple#539 and Silo-Server/silo-android#413 merged too)
White subtitle text is uncomfortably bright on an OLED or HDR screen 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. #369 asked for a gray default for this reason.This adds
textOpacity(1–100, default 100) to the sharedplayback.subtitle_appearancecontract, applied to the text color independently of the background, and a gray (#9ca3af) swatch to the font color palette. The Apple and Android PRs add the same control to their players.Approach
textOpacitysits next tobackgroundOpacityin the schema with the same shape, but floors at 1: fully invisible text is not a state any client should offer.computeSubtitleStylesrenders it as the alpha of the text color. Outline and shadow keep full opacity, as they do on Android and Apple.The contract moves to manifest revision 14. Revision 13 went to the advisory age overlay (#1672) while this was open, and the schema rejects unknown properties, so a revision-13 server rejects any subtitle appearance that includes
textOpacity. Clients send the field only to servers at revision 14 or later.On the web, both opacity controls are now typed percent fields instead of sliders; a slider is too coarse at the low end, where a few percent decides whether text is readable. The field saves only when the value changes, shows the stored value whenever it is not being edited, and commits a typed value before the in-player panel closes on Escape.
Validation
go testfor the settings contract and resolver packages: pass, including new schema cases fortextOpacity0, 1, 100, 101, 50.5 and"50"make verify-settings-bindings,make lint-changed,tsc -b, eslint and prettier on changed files: passtextOpacityRisks
textOpacityresolves to 100, so existing users see no change.Checklist
AI Disclosure
/code-review(high effort) and fixed an emptied field saving the floor value and dead slider CSS. A maintainer review with claude-opus-5-5 found the revision 13 collision, blur-only saves writing unchanged values, a stale draft after a failed save, and Escape discarding a typed value; all are fixed in this branch and were re-verified in the sandbox.🤖 Generated with Claude Code