42 lines
2.3 KiB
Markdown
42 lines
2.3 KiB
Markdown
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# Configurable window backgrounds
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Settings → Appearance offers Solid, Glass and Frosted glass. Preferences are
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saved locally. The tint-strength control ranges from 70 to 100%; the default
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is Frosted glass at 90%. Glass uses the direct tint; Frosted glass adds a 35%
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milk layer beneath it. This changes background treatment, never text opacity.
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Search input, result and preview panes and settings retain opaque reading
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surfaces. Shell secondary text becomes stronger over translucent backgrounds.
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High contrast immediately forces an opaque surface without changing the saved
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preference. Appearance writes are serialized; obsolete replies cannot overwrite
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the latest preference or accessibility state.
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## Platform support
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Windows 11 22H2 and newer use a transparent WebView and the established
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window-vibrancy crate's native acrylic implementation. Glass and Frosted glass
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share that native blur; their frontend milk tint differs. Desktop composition
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and OS high-contrast checks precede application, and native HRESULT failure
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returns an explicit solid fallback. Native window chrome remains enabled.
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Older Windows, macOS and Linux currently use a solid fallback. This macOS build
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does not enable private WebView transparency APIs. CSS backdrop-filter is not
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used to pretend the desktop is blurred. The settings report the effective
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material and explain the fallback.
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## Recorded checks, 2026-10-13
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- 57 frontend tests passed, including missing native capability, high contrast,
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bounded tint, serialized pending preferences and stale failure handling.
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- Frontend type checking, production build and formatting passed.
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- 33 desktop Rust tests passed with one test thread; settings checks cover legacy
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defaults, persisted preferences and invalid-value rejection preserving the
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previous file and memory. An earlier parallel run hit a transient Windows
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AccessDenied in an existing atomic-settings replacement test.
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- Desktop Rust formatting and strict all-target Clippy passed.
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Actual native material appearance and resize/compositor performance remain
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unverified. Enabled browser inventory was empty; native Windows capture/input
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access was unavailable. These checks establish implementation and persistence,
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not visual quality on release hardware. macOS/Linux native materials remain
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future work.
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