swaitsandClaude Opus 5.5
8022a66866
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Owner, 2026-10-19: hovering a scheme for a moment switches to it live; moving off goes to the next one hovered or back to the one in force, to sample schemes without re-opening the menu. A variant's row rested on for 50 ms is worn; off every row for 50 ms, the scheme in force again; the menu closed without a click, the one in force at once. Only a click chooses, and a preview is never kept. Tested with frames 10 ms apart. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T3gXMVt7XJPi6ens1or9Dj
89 lines
5.1 KiB
Markdown
89 lines
5.1 KiB
Markdown
# Color schemes in the viewer
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The viewer's color-scheme menu (the button in the sidebar's lower corner)
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offers its own scheme, Wanderbooks Light and Dark, and twenty families of
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popular editor schemes, each with all its variants: 80 schemes in all (78
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and the viewer's own two). The menu's filter narrows the list to light or
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dark schemes. Families are listed alphabetically, each one's variants too,
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in as many columns as the window's height needs, so every family is on
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screen at once; a variant's whole row (its colors and its name) chooses
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it. Resting the pointer on a variant's row for 50 ms wears it live, to
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sample schemes without choosing; off the rows, the next one hovered or the
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scheme in force is worn again, and closing the menu without a click puts
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back the one in force. Only a click chooses, and only a chosen scheme is
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kept.
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The choice is a viewer preference, kept with eframe's other preferences;
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nothing is written to the books, and no figure or word changes with the
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scheme (`schemes.rs`, `painted`).
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Owner, 2026-10-19: "full blown colorscheme support … all the top neovim
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style colorschemes"; "on the order of 20 families, each with a flyout of all
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its variants"; a light/dark/all filter; Ayu included.
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## Where the colors come from
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Each scheme's sixteen colors (`crates/ledger-gui/src/schemes/table.rs`) were
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taken from its official source and checked value by value (2026-10-19); the
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table names the source above each family:
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| Column | What it is |
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|---|---|
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| bg | the editor background (Normal) |
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| dim | a panel or sidebar background (mantle, bg_dark, bg0 …) |
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| raised | a raised surface (surface0, bg_highlight, float …); recorded, not used |
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| sel | the visual-selection background; recorded, not used |
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| border | the split or border color; recorded, not used |
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| fg | the text (Normal) |
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| muted | secondary text (subtext, fg_dark, subtle …) |
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| faint | comments |
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| accent | the scheme's signature accent: in most its blue; Ayu's yellow-orange, Dracula's purple, Rosé Pine's iris, Monokai Pro's yellow, Material's teal, Nord's frost cyan (nord8), GitHub's own accent blue |
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| red, green, yellow, orange, blue, purple, cyan | its named colors |
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Where a scheme has no color for a column, the closest official one stands
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in (Dracula has no blue: its ANSI blue, its purple; Sonokai has no cyan: its
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blue; Oxocarbon has no yellow: IBM Carbon's, and no orange: its pink). A few
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columns repeat another for the same reason: seven schemes have one
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background (Gruvbox Dark Hard, Nord, Solarized Dark and Light, Cyberdream
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Dark and Light, Melange Dark), dim being their bg. Variant names are the plugins' own (GitHub
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Dark Default, not Dark, which is another theme).
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## How the viewer paints with them
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- The page is the darker of a scheme's bg and dim, the cards the lighter,
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so cards stand out in light and dark schemes alike. A scheme with one
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background gets a second a shade toward its text: lighter cards in a
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dark scheme, a darker page in a light one.
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- Secondary text is the scheme's muted color, unless that is no dimmer than
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its text (Nord's documented "subtle" tone is brighter): then a tone
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between its text and its comments.
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- Selection is the cards tinted with the accent; the new-entry highlight is
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the cards lightly tinted with the yellow (at 10%: a stronger tint left
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too little room for colored amounts on it, and bleached Nord's red to a
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pink).
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- The charts' series are the scheme's blue, cyan, yellow, purple, orange,
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green, red and accent, in that order, each that looks like one already
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taken (CIE76 ΔE under 20) passed over: Monokai Pro and Sonokai name their
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cyan with their blue, and Kanagawa Dragon's blues, cyans and purples are
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near one another. The three the charts show together (net, income,
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spending) are always plainly different.
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- **Readable, always.** Every color that carries text or a figure (text,
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secondary text, the faintest text, which carries chart amounts and entry
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numbers, gains, losses, warnings, links) reaches WCAG AA contrast (4.5:1)
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on every background it is drawn on: page, cards, sidebar, hover,
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selection, the new-entry highlight, and the soft fills of pills and
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badges. A scheme's color that falls short keeps its hue and saturation
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and only gets lighter (dark schemes) or darker (light ones), just far
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enough. Gains, losses and plain text stay plainly different to the eye
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(ΔE 20 or more apart). egui's own faint text (placeholders) is the
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secondary text; the logo's initial is black or white, whichever reads on
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the accent. The viewer's own palettes go through the same rule (it lifted
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Wanderbooks Light's green on the sidebar from 4.35:1, its faint text and
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warnings too, and Wanderbooks Dark's faint text).
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- **Three levels of text, always apart.** Lifted one by one, secondary and
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faint text came out alike (identical in some schemes, faint above
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secondary in others). So the faintest is lifted first, then secondary
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text until it reads at least 1.2 times better than the faint on the
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ground it reads worst on, then the text the same over secondary.
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- The scheme sets both of egui's styles and pins its light or dark theme,
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so the system turning light or dark later changes nothing.
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