feat(desktop): install any VS Code theme from the Marketplace

Browse + install color themes from the VS Code Marketplace straight from
Cmd-K and Settings → Appearance. The Electron main process resolves the
extension, unzips the .vsix with a hand-rolled zip reader (zlib only, no
new deps), and hands back the raw theme JSON; the renderer converts it to
a DesktopTheme with a small seed → color-mix mapping.

- Folds an extension's light + dark variants into one theme family, so the
  light/dark toggle switches Solarized/GitHub variants and installing in
  dark mode stays dark.
- Guarantees accent contrast (WCAG AA) so imported sidebar labels read
  instead of vanishing into the surface.
- Filters icon/product-icon packs out of the Themes-category search.
- "Install theme…" lives atop the Cmd-K theme picker; imports fold into
  the Light/Dark groups by the modes they support.
This commit is contained in:
Brooklyn Nicholson 2026-06-09 23:06:44 -05:00
parent 5cf6e28a2f
commit 27a3211579
21 changed files with 1843 additions and 101 deletions

View file

@ -30,6 +30,7 @@ const { buildSessionWindowUrl, createSessionWindowRegistry } = require('./sessio
const { canImportHermesCli, verifyHermesCli } = require('./backend-probes.cjs')
const { probeGatewayWebSocket } = require('./gateway-ws-probe.cjs')
const { serializeJsonBody, setJsonRequestHeaders } = require('./oauth-net-request.cjs')
const { fetchMarketplaceThemes, searchMarketplaceThemes } = require('./vscode-marketplace.cjs')
const {
buildPosixCleanupScript,
buildWindowsCleanupScript,
@ -5962,6 +5963,13 @@ ipcMain.handle('hermes:uninstall:run', async (_event, payload) => {
return runDesktopUninstall(String(mode || ''))
})
// Download a VS Code Marketplace extension and return the raw color-theme JSON
// it contributes. No theme code is executed — we only read JSON from the .vsix.
ipcMain.handle('hermes:vscode-theme:fetch', async (_event, id) => fetchMarketplaceThemes(String(id || '')))
// Search the Marketplace for color-theme extensions (empty query = top installs).
ipcMain.handle('hermes:vscode-theme:search', async (_event, query) => searchMarketplaceThemes(String(query || ''), 20))
app.whenReady().then(() => {
if (IS_MAC) {

View file

@ -133,5 +133,9 @@ contextBridge.exposeInMainWorld('hermesDesktop', {
ipcRenderer.on('hermes:updates:progress', listener)
return () => ipcRenderer.removeListener('hermes:updates:progress', listener)
}
},
themes: {
fetchMarketplace: id => ipcRenderer.invoke('hermes:vscode-theme:fetch', id),
searchMarketplace: query => ipcRenderer.invoke('hermes:vscode-theme:search', query)
}
})

View file

@ -0,0 +1,331 @@
'use strict'
/**
* VS Code Marketplace color-theme fetcher (main process).
*
* Resolves an extension's latest version via the (undocumented but stable)
* gallery ExtensionQuery API, downloads the `.vsix` (a zip), and extracts the
* color-theme JSON files it contributes. No theme code is ever executed we
* only read `package.json` + the referenced `*.json` theme files out of the
* archive and hand their text back to the renderer to convert.
*
* Dependency-free on purpose: a `.vsix` is a plain zip, so we parse the central
* directory and inflate just the entries we need with `zlib`. Avoids pulling a
* zip library into the desktop bundle for a feature this small.
*/
const https = require('node:https')
const zlib = require('node:zlib')
const GALLERY_QUERY_URL = 'https://marketplace.visualstudio.com/_apis/public/gallery/extensionquery'
const VSIX_ASSET_TYPE = 'Microsoft.VisualStudio.Services.VSIXPackage'
const MAX_VSIX_BYTES = 40 * 1024 * 1024 // 40 MB — themes are tiny; this is paranoia.
const MAX_REDIRECTS = 5
const REQUEST_TIMEOUT_MS = 20_000
const ID_RE = /^[\w-]+\.[\w-]+$/
/** Minimal HTTPS helper with redirect-following, timeout, and a size cap. */
function request(url, { method = 'GET', headers = {}, body = null, maxBytes = MAX_VSIX_BYTES } = {}, redirectsLeft = MAX_REDIRECTS) {
return new Promise((resolve, reject) => {
const req = https.request(url, { method, headers }, res => {
const status = res.statusCode ?? 0
if (status >= 300 && status < 400 && res.headers.location) {
if (redirectsLeft <= 0) {
res.resume()
reject(new Error('Too many redirects.'))
return
}
const next = new URL(res.headers.location, url).toString()
res.resume()
// Redirects to the CDN are plain GETs (drop the POST body).
resolve(request(next, { method: 'GET', headers: { 'User-Agent': headers['User-Agent'] }, maxBytes }, redirectsLeft - 1))
return
}
if (status < 200 || status >= 300) {
res.resume()
reject(new Error(`Request failed (${status}) for ${url}`))
return
}
const chunks = []
let total = 0
res.on('data', chunk => {
total += chunk.length
if (total > maxBytes) {
req.destroy()
reject(new Error('Response exceeded the size limit.'))
return
}
chunks.push(chunk)
})
res.on('end', () => resolve(Buffer.concat(chunks)))
})
req.on('error', reject)
req.setTimeout(REQUEST_TIMEOUT_MS, () => req.destroy(new Error('Request timed out.')))
if (body) {
req.write(body)
}
req.end()
})
}
/** Resolve `{ displayName, vsixUrl }` for the latest version of `id`. */
async function resolveExtension(id) {
const json = await queryGallery({
// FilterType 7 = ExtensionName (the full publisher.extension id).
filters: [{ criteria: [{ filterType: 7, value: id }], pageNumber: 1, pageSize: 1 }],
// Flags: IncludeFiles | IncludeVersionProperties | IncludeAssetUri |
// IncludeCategoryAndTags | IncludeLatestVersionOnly = 914.
flags: 914
})
const extension = json?.results?.[0]?.extensions?.[0]
if (!extension) {
throw new Error(`Extension "${id}" was not found on the Marketplace.`)
}
const version = extension.versions?.[0]
if (!version) {
throw new Error(`Extension "${id}" has no published versions.`)
}
const asset = (version.files ?? []).find(file => file.assetType === VSIX_ASSET_TYPE)
const vsixUrl = asset?.source
if (!vsixUrl) {
throw new Error(`Could not find a downloadable package for "${id}".`)
}
return { displayName: extension.displayName || id, vsixUrl }
}
/** POST an ExtensionQuery payload and return the parsed gallery response. */
async function queryGallery(payload, { maxBytes = 4 * 1024 * 1024 } = {}) {
const body = JSON.stringify(payload)
const raw = await request(GALLERY_QUERY_URL, {
method: 'POST',
headers: {
Accept: 'application/json;api-version=3.0-preview.1',
'Content-Type': 'application/json',
'Content-Length': Buffer.byteLength(body),
'User-Agent': 'Hermes-Desktop'
},
body,
maxBytes
})
return JSON.parse(raw.toString('utf8'))
}
/**
* Search the Marketplace for color-theme extensions. With an empty query this
* returns the most-installed themes; with a query it's a full-text search
* scoped to the Themes category. Returns lightweight cards (no download).
*/
/**
* The "Themes" category also contains file-icon and product-icon themes (the
* gallery has no color-only category). We can't see an extension's actual
* contributions without downloading it, so filter the obvious icon packs out by
* tag + name/description. Color themes that also ship icons are rare; worst case
* a user installs them by exact id from settings.
*/
function looksLikeIconTheme(extension) {
const tags = (extension.tags ?? []).map(tag => String(tag).toLowerCase())
if (tags.includes('icon-theme') || tags.includes('product-icon-theme')) {
return true
}
const text = `${extension.displayName ?? ''} ${extension.shortDescription ?? ''}`.toLowerCase()
return /\b(icon theme|file icons?|product icons?|icon pack|fileicons)\b/.test(text)
}
async function searchMarketplaceThemes(query, limit = 20) {
const text = String(query || '').trim()
const pageSize = Math.min(Math.max(Number(limit) || 20, 1), 50)
// FilterType: 8=Target, 5=Category, 10=SearchText, 12=ExcludeWithFlags.
const criteria = [
{ filterType: 8, value: 'Microsoft.VisualStudio.Code' },
{ filterType: 5, value: 'Themes' },
{ filterType: 12, value: '4096' } // Exclude unpublished (Unpublished = 0x1000).
]
if (text) {
criteria.push({ filterType: 10, value: text })
}
const json = await queryGallery({
// Over-fetch so the icon-theme filter below still leaves a full page.
filters: [{ criteria, pageNumber: 1, pageSize: Math.min(pageSize * 2, 50), sortBy: 4, sortOrder: 0 }],
// IncludeStatistics (0x100) | IncludeLatestVersionOnly (0x200) | IncludeCategoryAndTags (0x4).
flags: 772
})
const extensions = json?.results?.[0]?.extensions ?? []
return extensions
.filter(extension => !looksLikeIconTheme(extension))
.slice(0, pageSize)
.map(extension => {
const publisherName = extension.publisher?.publisherName ?? ''
const installStat = (extension.statistics ?? []).find(stat => stat.statisticName === 'install')
return {
extensionId: `${publisherName}.${extension.extensionName}`,
displayName: extension.displayName || extension.extensionName,
publisher: extension.publisher?.displayName || publisherName,
description: extension.shortDescription || '',
installs: Math.round(installStat?.value ?? 0)
}
})
}
// ─── Minimal zip reader ─────────────────────────────────────────────────────
function findEndOfCentralDirectory(buf) {
// EOCD signature 0x06054b50, scanning back from the end (comment is rare).
for (let i = buf.length - 22; i >= 0; i--) {
if (buf.readUInt32LE(i) === 0x06054b50) {
return i
}
}
throw new Error('Not a valid zip archive (no end-of-central-directory).')
}
/** Parse the central directory into a name → record map. */
function readCentralDirectory(buf) {
const eocd = findEndOfCentralDirectory(buf)
const count = buf.readUInt16LE(eocd + 10)
let offset = buf.readUInt32LE(eocd + 16)
const records = new Map()
for (let i = 0; i < count; i++) {
if (buf.readUInt32LE(offset) !== 0x02014b50) {
break
}
const method = buf.readUInt16LE(offset + 10)
const compressedSize = buf.readUInt32LE(offset + 20)
const nameLen = buf.readUInt16LE(offset + 28)
const extraLen = buf.readUInt16LE(offset + 30)
const commentLen = buf.readUInt16LE(offset + 32)
const localOffset = buf.readUInt32LE(offset + 42)
const name = buf.toString('utf8', offset + 46, offset + 46 + nameLen)
records.set(name, { method, compressedSize, localOffset })
offset += 46 + nameLen + extraLen + commentLen
}
return records
}
/** Inflate a single entry to a string. */
function extractEntry(buf, record) {
// The local header's name/extra lengths can differ from the central record,
// so re-read them here to locate the compressed payload.
if (buf.readUInt32LE(record.localOffset) !== 0x04034b50) {
throw new Error('Corrupt zip: bad local file header.')
}
const nameLen = buf.readUInt16LE(record.localOffset + 26)
const extraLen = buf.readUInt16LE(record.localOffset + 28)
const dataStart = record.localOffset + 30 + nameLen + extraLen
const data = buf.subarray(dataStart, dataStart + record.compressedSize)
// 0 = stored, 8 = deflate. Theme files are one or the other.
return record.method === 0 ? data.toString('utf8') : zlib.inflateRawSync(data).toString('utf8')
}
/** Normalize a package.json theme path to its zip entry name. */
function themeEntryName(themePath) {
const clean = String(themePath).replace(/^\.\//, '').replace(/^\//, '')
return `extension/${clean}`
}
/** Extract every contributed color theme from a `.vsix` buffer. */
function extractThemes(vsixBuffer) {
const records = readCentralDirectory(vsixBuffer)
const pkgRecord = records.get('extension/package.json')
if (!pkgRecord) {
throw new Error('Package manifest missing from the extension.')
}
const pkg = JSON.parse(extractEntry(vsixBuffer, pkgRecord))
const contributed = pkg?.contributes?.themes
if (!Array.isArray(contributed) || contributed.length === 0) {
return []
}
const themes = []
for (const entry of contributed) {
if (!entry?.path) {
continue
}
const record = records.get(themeEntryName(entry.path))
if (!record) {
continue
}
try {
themes.push({
label: entry.label || entry.id || pkg.displayName || pkg.name || 'VS Code Theme',
uiTheme: entry.uiTheme,
contents: extractEntry(vsixBuffer, record)
})
} catch {
// Skip an entry we can't inflate rather than failing the whole install.
}
}
return themes
}
/**
* Public entry: resolve, download, and extract color themes for `id`
* (`publisher.extension`). Returns `{ extensionId, displayName, themes }`.
*/
async function fetchMarketplaceThemes(id) {
const trimmed = String(id || '').trim()
if (!ID_RE.test(trimmed)) {
throw new Error('Expected a Marketplace id like "publisher.extension".')
}
const { displayName, vsixUrl } = await resolveExtension(trimmed)
const vsix = await request(vsixUrl, { headers: { 'User-Agent': 'Hermes-Desktop' } })
const themes = extractThemes(vsix)
return { extensionId: trimmed, displayName, themes }
}
module.exports = {
fetchMarketplaceThemes,
searchMarketplaceThemes,
extractThemes,
readCentralDirectory,
__testing: { themeEntryName, looksLikeIconTheme }
}

View file

@ -0,0 +1,113 @@
'use strict'
const assert = require('node:assert')
const test = require('node:test')
const { __testing, extractThemes, readCentralDirectory } = require('./vscode-marketplace.cjs')
// Build a minimal zip with stored (uncompressed) entries so the test controls
// the bytes exactly — exercises the central-directory reader + theme extraction
// without a deflate dependency.
function makeZip(entries) {
const locals = []
const centrals = []
let offset = 0
for (const { name, data } of entries) {
const nameBuf = Buffer.from(name, 'utf8')
const body = Buffer.from(data, 'utf8')
const local = Buffer.alloc(30 + nameBuf.length)
local.writeUInt32LE(0x04034b50, 0)
local.writeUInt16LE(0, 8) // method: stored
local.writeUInt32LE(body.length, 18) // compressed size
local.writeUInt32LE(body.length, 22) // uncompressed size
local.writeUInt16LE(nameBuf.length, 26)
nameBuf.copy(local, 30)
locals.push(local, body)
const central = Buffer.alloc(46 + nameBuf.length)
central.writeUInt32LE(0x02014b50, 0)
central.writeUInt16LE(0, 10) // method: stored
central.writeUInt32LE(body.length, 20)
central.writeUInt32LE(body.length, 24)
central.writeUInt16LE(nameBuf.length, 28)
central.writeUInt32LE(offset, 42) // local header offset
nameBuf.copy(central, 46)
centrals.push(central)
offset += local.length + body.length
}
const centralStart = offset
const centralBuf = Buffer.concat(centrals)
const eocd = Buffer.alloc(22)
eocd.writeUInt32LE(0x06054b50, 0)
eocd.writeUInt16LE(entries.length, 8)
eocd.writeUInt16LE(entries.length, 10)
eocd.writeUInt32LE(centralBuf.length, 12)
eocd.writeUInt32LE(centralStart, 16)
return Buffer.concat([...locals, centralBuf, eocd])
}
test('readCentralDirectory finds every entry', () => {
const zip = makeZip([
{ name: 'extension/package.json', data: '{}' },
{ name: 'extension/themes/x.json', data: '{}' }
])
const records = readCentralDirectory(zip)
assert.ok(records.has('extension/package.json'))
assert.ok(records.has('extension/themes/x.json'))
})
test('extractThemes reads contributed color themes (resolving ./ paths)', () => {
const pkg = JSON.stringify({
name: 'theme-dracula',
displayName: 'Dracula',
contributes: {
themes: [{ label: 'Dracula', uiTheme: 'vs-dark', path: './themes/dracula.json' }]
}
})
const themeJson = JSON.stringify({ name: 'Dracula', type: 'dark', colors: { 'editor.background': '#282a36' } })
const zip = makeZip([
{ name: 'extension/package.json', data: pkg },
{ name: 'extension/themes/dracula.json', data: themeJson }
])
const themes = extractThemes(zip)
assert.strictEqual(themes.length, 1)
assert.strictEqual(themes[0].label, 'Dracula')
assert.strictEqual(themes[0].uiTheme, 'vs-dark')
assert.match(themes[0].contents, /editor\.background/)
})
test('extractThemes returns empty when the extension contributes no themes', () => {
const zip = makeZip([{ name: 'extension/package.json', data: JSON.stringify({ name: 'x', contributes: {} }) }])
assert.deepStrictEqual(extractThemes(zip), [])
})
test('extractThemes throws when the manifest is missing', () => {
const zip = makeZip([{ name: 'extension/other.txt', data: 'hi' }])
assert.throws(() => extractThemes(zip), /manifest missing/i)
})
test('looksLikeIconTheme filters icon/product-icon packs out of theme search', () => {
const { looksLikeIconTheme } = __testing
// Tagged contribution points are the strongest signal.
assert.strictEqual(looksLikeIconTheme({ tags: ['theme', 'icon-theme'] }), true)
assert.strictEqual(looksLikeIconTheme({ tags: ['product-icon-theme'] }), true)
// Name/description fallback for packs that don't tag themselves.
assert.strictEqual(looksLikeIconTheme({ displayName: 'Material Icon Theme' }), true)
assert.strictEqual(looksLikeIconTheme({ shortDescription: 'A pack of file icons.' }), true)
// Real color themes survive.
assert.strictEqual(looksLikeIconTheme({ displayName: 'Dracula Official', tags: ['theme', 'color-theme'] }), false)
assert.strictEqual(looksLikeIconTheme({ displayName: 'One Dark Pro' }), false)
})

View file

@ -17,6 +17,7 @@ import {
ChevronRight,
Clock,
Cpu,
Download,
Globe,
type IconComponent,
Info,
@ -36,7 +37,9 @@ import {
} from '@/lib/icons'
import { cn } from '@/lib/utils'
import { $commandPaletteOpen, closeCommandPalette, setCommandPaletteOpen } from '@/store/command-palette'
import { luminance } from '@/themes/color'
import { type ThemeMode, useTheme } from '@/themes/context'
import { isUserTheme, resolveTheme } from '@/themes/user-themes'
import {
AGENTS_ROUTE,
@ -54,6 +57,8 @@ import { FIELD_LABELS, SECTIONS } from '../settings/constants'
import { fieldCopyForSchemaKey } from '../settings/field-copy'
import { prettyName } from '../settings/helpers'
import { MarketplaceThemePage } from './marketplace-theme-page'
interface PaletteItem {
active?: boolean
icon: IconComponent
@ -69,10 +74,16 @@ interface PaletteItem {
}
interface PaletteGroup {
heading: string
/** Optional: a headingless group renders as a bare action row (e.g. the
* "Install theme…" entry pinned atop the theme picker). */
heading?: string
items: PaletteItem[]
}
// Nested page → its parent, so Back / Esc step up one level instead of closing
// the palette. Pages absent here go straight back to the root list.
const PAGE_PARENTS: Record<string, string> = { 'install-theme': 'theme' }
/** A nested page reachable from a root item via `to`. */
interface PalettePage {
groups: PaletteGroup[]
@ -146,6 +157,26 @@ const THEME_MODES: ReadonlyArray<{ icon: IconComponent; mode: ThemeMode }> = [
{ icon: Monitor, mode: 'system' }
]
// Which Light/Dark groups a theme belongs in. Built-ins render in both modes
// (the engine synthesises the missing side). Imported VS Code themes only carry
// the variant(s) the extension shipped — a single dark theme like Dracula lives
// under Dark only, while a GitHub/Solarized family (light + dark) lives in both.
function themeSupportsMode(name: string, target: 'light' | 'dark'): boolean {
if (!isUserTheme(name)) {
return true
}
const resolved = resolveTheme(name)
if (!resolved) {
return true
}
const background = target === 'dark' ? (resolved.darkColors ?? resolved.colors).background : resolved.colors.background
return target === 'dark' ? luminance(background) <= 0.5 : luminance(background) > 0.5
}
export function CommandPalette() {
const { t } = useI18n()
const open = useStore($commandPaletteOpen)
@ -194,10 +225,19 @@ export function CommandPalette() {
}, [open])
const go = useCallback((path: string) => () => navigate(path), [navigate])
// Step up one nested page (or back to the root list), clearing the filter so
// the parent page doesn't reopen mid-search.
const goBack = useCallback(() => {
setSearch('')
setPage(prev => (prev ? (PAGE_PARENTS[prev] ?? null) : null))
}, [])
const settingsSectionLabel = useCallback(
(section: (typeof SECTIONS)[number]) => t.settings.sections[section.id] ?? section.label,
[t.settings.sections]
)
const configFieldLabel = useCallback(
(key: string) =>
fieldCopyForSchemaKey(t.settings.fieldLabels, key) ??
@ -373,24 +413,43 @@ export function CommandPalette() {
theme: {
title: t.settings.appearance.themeTitle,
placeholder: t.settings.appearance.themeDesc,
// Skins aren't inherently light/dark — the same skin renders in either
// mode. Group by appearance so picking an entry sets skin + mode at
// once, and keep the palette open so each pick previews live.
groups: (['light', 'dark'] as const).map(groupMode => ({
heading: groupMode === 'light' ? t.settings.modeOptions.light.label : t.settings.modeOptions.dark.label,
items: availableThemes.map(theme => ({
active: themeName === theme.name && resolvedMode === groupMode,
icon: groupMode === 'light' ? Sun : Moon,
id: `theme-${theme.name}-${groupMode}`,
keepOpen: true,
keywords: ['theme', 'appearance', 'palette', groupMode, theme.label, theme.description ?? ''],
label: theme.label,
run: () => {
setTheme(theme.name)
setMode(groupMode)
}
groups: [
// Pinned at the top: drills into the Marketplace browser. Activating an
// import only sets the skin (never the mode), so the current light/dark
// preference is preserved.
{
items: [
{
icon: Download,
id: 'theme-install',
keywords: ['install', 'marketplace', 'vscode', 'vs code', 'download', 'new', 'color'],
label: t.commandCenter.installTheme.title,
to: 'install-theme'
}
]
},
// Built-ins and imported families both list under the mode(s) they
// support; picking one sets skin + mode at once. Keep the palette open
// to preview. A multi-variant import (GitHub, Solarized) appears in
// both groups and switches variants with the mode.
...(['light', 'dark'] as const).map(groupMode => ({
heading: groupMode === 'light' ? t.settings.modeOptions.light.label : t.settings.modeOptions.dark.label,
items: availableThemes
.filter(theme => themeSupportsMode(theme.name, groupMode))
.map(theme => ({
active: themeName === theme.name && resolvedMode === groupMode,
icon: groupMode === 'light' ? Sun : Moon,
id: `theme-${theme.name}-${groupMode}`,
keepOpen: true,
keywords: ['theme', 'appearance', 'palette', groupMode, theme.label, theme.description ?? ''],
label: theme.label,
run: () => {
setTheme(theme.name)
setMode(groupMode)
}
}))
}))
}))
]
},
'color-mode': {
title: t.settings.appearance.colorMode,
@ -409,6 +468,13 @@ export function CommandPalette() {
}))
}
]
},
// Server-driven page: items come from the Marketplace, rendered by
// <MarketplaceThemePage> (loader + live search + per-row install).
'install-theme': {
title: t.commandCenter.installTheme.title,
placeholder: t.commandCenter.installTheme.placeholder,
groups: []
}
}),
[availableThemes, mode, resolvedMode, setMode, setTheme, t, themeName]
@ -446,7 +512,7 @@ export function CommandPalette() {
{activePage && (
<button
className="flex w-full items-center gap-1.5 border-b border-border px-3 py-1.5 text-left text-xs text-muted-foreground transition-colors hover:text-foreground"
onClick={() => setPage(null)}
onClick={goBack}
type="button"
>
<ChevronLeft className="size-3.5" />
@ -466,7 +532,7 @@ export function CommandPalette() {
if (event.key === 'Escape' || (event.key === 'Backspace' && search === '')) {
event.preventDefault()
event.stopPropagation()
setPage(null)
goBack()
}
}}
onValueChange={setSearch}
@ -474,12 +540,16 @@ export function CommandPalette() {
value={search}
/>
<CommandList className="max-h-[min(24rem,60vh)]">
<CommandEmpty>{t.commandCenter.noResults}</CommandEmpty>
{visibleGroups.map(group => (
{page === 'install-theme' ? (
<MarketplaceThemePage onPickTheme={setTheme} search={search} />
) : (
<CommandEmpty>{t.commandCenter.noResults}</CommandEmpty>
)}
{visibleGroups.map((group, index) => (
<CommandGroup
className="**:[[cmdk-group-heading]]:uppercase **:[[cmdk-group-heading]]:tracking-wider **:[[cmdk-group-heading]]:text-[0.6875rem] **:[[cmdk-group-heading]]:text-muted-foreground/70"
heading={group.heading}
key={group.heading}
key={group.heading ?? `palette-group-${index}`}
>
{group.items.map(item => {
const Icon = item.icon

View file

@ -0,0 +1,154 @@
/**
* Cmd-K "Install theme…" page.
*
* Browses the VS Code Marketplace for color themes: an empty query shows the
* most-installed themes, typing runs a live (debounced) search against the
* Marketplace. Selecting a row downloads + converts + installs it via the same
* pipeline as the settings importer, then activates it and stays open so the
* user can grab several.
*/
import { useQuery } from '@tanstack/react-query'
import { useEffect, useState } from 'react'
import type { DesktopMarketplaceSearchItem } from '@/global'
import { useI18n } from '@/i18n'
import { triggerHaptic } from '@/lib/haptics'
import { Check, Download, Loader2, Palette } from '@/lib/icons'
import { cn } from '@/lib/utils'
import { installVscodeThemeFromMarketplace } from '@/themes/install'
const compactNumber = new Intl.NumberFormat(undefined, { notation: 'compact', maximumFractionDigits: 1 })
function useDebounced<T>(value: T, delayMs: number): T {
const [debounced, setDebounced] = useState(value)
useEffect(() => {
const handle = setTimeout(() => setDebounced(value), delayMs)
return () => clearTimeout(handle)
}, [value, delayMs])
return debounced
}
interface MarketplaceThemePageProps {
search: string
/** Activate a freshly installed theme by slug. */
onPickTheme: (name: string) => void
}
export function MarketplaceThemePage({ search, onPickTheme }: MarketplaceThemePageProps) {
const { t } = useI18n()
const copy = t.commandCenter.installTheme
const debouncedSearch = useDebounced(search.trim(), 300)
const [installingId, setInstallingId] = useState<string | null>(null)
const [installed, setInstalled] = useState<Record<string, true>>({})
const [installError, setInstallError] = useState<string | null>(null)
const query = useQuery({
queryKey: ['marketplace-themes', debouncedSearch],
queryFn: () => window.hermesDesktop?.themes?.searchMarketplace(debouncedSearch) ?? Promise.resolve([]),
staleTime: 5 * 60 * 1000
})
const install = async (item: DesktopMarketplaceSearchItem) => {
if (installingId) {
return
}
setInstallingId(item.extensionId)
setInstallError(null)
try {
const theme = await installVscodeThemeFromMarketplace(item.extensionId)
triggerHaptic('crisp')
setInstalled(prev => ({ ...prev, [item.extensionId]: true }))
onPickTheme(theme.name)
} catch (error) {
setInstallError(error instanceof Error ? error.message : copy.error)
} finally {
setInstallingId(null)
}
}
if (query.isLoading) {
return <Status icon={<Loader2 className="size-4 animate-spin" />} text={copy.loading} />
}
if (query.isError) {
return <Status text={copy.error} tone="error" />
}
const results = query.data ?? []
if (results.length === 0) {
return <Status text={copy.empty} />
}
return (
<div role="listbox">
{installError && (
<p className="px-3 pb-1.5 pt-2 text-[0.75rem] text-(--ui-red)">{installError}</p>
)}
{results.map(item => {
const busy = installingId === item.extensionId
const done = installed[item.extensionId]
return (
<button
className="flex w-full items-center gap-2.5 rounded-md px-3 py-2 text-left text-sm transition-colors hover:bg-(--chrome-action-hover) disabled:opacity-60 aria-disabled:opacity-60"
disabled={Boolean(installingId) && !busy}
key={item.extensionId}
onClick={() => void install(item)}
onMouseDown={event => event.preventDefault()}
role="option"
type="button"
>
<Palette className="size-4 shrink-0 text-muted-foreground" />
<span className="flex min-w-0 flex-col">
<span className="truncate font-medium">{item.displayName}</span>
<span className="truncate text-[0.75rem] text-muted-foreground/80">
{item.publisher}
{item.installs > 0 ? ` · ${copy.installs(compactNumber.format(item.installs))}` : ''}
</span>
</span>
<span className="ml-auto flex shrink-0 items-center gap-1 text-[0.75rem] text-muted-foreground">
{busy ? (
<>
<Loader2 className="size-3.5 animate-spin" />
{copy.installing}
</>
) : done ? (
<>
<Check className="size-3.5 text-(--ui-green)" />
{copy.installed}
</>
) : (
<>
<Download className="size-3.5" />
{copy.install}
</>
)}
</span>
</button>
)
})}
</div>
)
}
function Status({ icon, text, tone }: { icon?: React.ReactNode; text: string; tone?: 'error' }) {
return (
<div
className={cn(
'flex items-center justify-center gap-2 px-3 py-8 text-sm',
tone === 'error' ? 'text-(--ui-red)' : 'text-muted-foreground'
)}
>
{icon}
{text}
</div>
)
}

View file

@ -1,21 +1,23 @@
import { useStore } from '@nanostores/react'
import { useState } from 'react'
import { LanguageSwitcher } from '@/components/language-switcher'
import { SegmentedControl } from '@/components/ui/segmented-control'
import { useI18n } from '@/i18n'
import { triggerHaptic } from '@/lib/haptics'
import { Check, Palette } from '@/lib/icons'
import { Check, Download, Loader2, Palette, Trash2 } from '@/lib/icons'
import { cn } from '@/lib/utils'
import { $activeGatewayProfile, $profiles, normalizeProfileKey } from '@/store/profile'
import { $toolViewMode, setToolViewMode } from '@/store/tool-view'
import { useTheme } from '@/themes/context'
import { BUILTIN_THEMES } from '@/themes/presets'
import { installVscodeThemeFromMarketplace } from '@/themes/install'
import { isUserTheme, removeUserTheme, resolveTheme } from '@/themes/user-themes'
import { MODE_OPTIONS } from './constants'
import { ListRow, SectionHeading, SettingsContent } from './primitives'
function ThemePreview({ name }: { name: string }) {
const t = BUILTIN_THEMES[name]
const t = resolveTheme(name)
if (!t) {
return null
@ -54,6 +56,81 @@ function ThemePreview({ name }: { name: string }) {
)
}
function VscodeThemeInstaller() {
const { t } = useI18n()
const { setTheme } = useTheme()
const a = t.settings.appearance
const [id, setId] = useState('')
const [busy, setBusy] = useState(false)
const [status, setStatus] = useState<{ kind: 'error' | 'success'; text: string } | null>(null)
const install = async () => {
const trimmed = id.trim()
if (!trimmed || busy) {
return
}
setBusy(true)
setStatus(null)
try {
const theme = await installVscodeThemeFromMarketplace(trimmed)
triggerHaptic('crisp')
setTheme(theme.name)
setStatus({ kind: 'success', text: a.installed(theme.label) })
setId('')
} catch (error) {
setStatus({ kind: 'error', text: error instanceof Error ? error.message : a.installError })
} finally {
setBusy(false)
}
}
return (
<div className="mt-3">
<div className="flex flex-wrap items-center gap-2">
<input
className="min-w-0 flex-1 rounded-lg border border-(--ui-stroke-tertiary) bg-(--ui-bg-quinary) px-3 py-1.5 font-mono text-[length:var(--conversation-caption-font-size)] outline-none placeholder:text-(--ui-text-tertiary) focus:border-(--ui-stroke-secondary)"
disabled={busy}
onChange={event => {
setId(event.target.value)
setStatus(null)
}}
onKeyDown={event => {
if (event.key === 'Enter') {
void install()
}
}}
placeholder={a.installPlaceholder}
spellCheck={false}
value={id}
/>
<button
className="inline-flex items-center gap-1.5 rounded-lg border border-(--ui-stroke-secondary) bg-(--ui-bg-tertiary) px-3 py-1.5 text-[length:var(--conversation-caption-font-size)] font-medium transition hover:bg-(--chrome-action-hover) disabled:opacity-50"
disabled={busy || !id.trim()}
onClick={() => void install()}
type="button"
>
{busy ? <Loader2 className="size-3.5 animate-spin" /> : <Download className="size-3.5" />}
{busy ? a.installing : a.installButton}
</button>
</div>
{status && (
<p
className={cn(
'mt-2 text-[length:var(--conversation-caption-font-size)] leading-(--conversation-caption-line-height)',
status.kind === 'error' ? 'text-(--ui-red)' : 'text-(--ui-text-tertiary)'
)}
>
{status.text}
</p>
)}
</div>
)
}
export function AppearanceSettings() {
const { t, isSavingLocale } = useI18n()
const { themeName, mode, availableThemes, setTheme, setMode } = useTheme()
@ -112,40 +189,62 @@ export function AppearanceSettings() {
<div className="mt-3 grid gap-3 sm:grid-cols-2 xl:grid-cols-3">
{availableThemes.map(theme => {
const active = themeName === theme.name
const removable = isUserTheme(theme.name)
return (
<button
className={cn(
'rounded-lg border border-(--ui-stroke-tertiary) bg-(--ui-bg-quinary) p-2 text-left transition hover:bg-(--chrome-action-hover)',
active && 'border-(--ui-stroke-secondary) bg-(--ui-bg-tertiary)'
)}
key={theme.name}
onClick={() => {
triggerHaptic('crisp')
setTheme(theme.name)
}}
type="button"
>
<ThemePreview name={theme.name} />
<div className="mt-3 flex items-start justify-between gap-3 px-1">
<div className="min-w-0">
<div className="truncate text-[length:var(--conversation-text-font-size)] font-medium">
{theme.label}
</div>
<div className="mt-0.5 line-clamp-2 text-[length:var(--conversation-caption-font-size)] leading-(--conversation-caption-line-height) text-(--ui-text-tertiary)">
{theme.description}
</div>
</div>
{active && (
<span className="mt-0.5 grid size-5 shrink-0 place-items-center rounded-full bg-primary text-primary-foreground">
<Check className="size-3.5" />
</span>
<div className="group relative" key={theme.name}>
<button
className={cn(
'w-full rounded-lg border border-(--ui-stroke-tertiary) bg-(--ui-bg-quinary) p-2 text-left transition hover:bg-(--chrome-action-hover)',
active && 'border-(--ui-stroke-secondary) bg-(--ui-bg-tertiary)'
)}
</div>
</button>
onClick={() => {
triggerHaptic('crisp')
setTheme(theme.name)
}}
type="button"
>
<ThemePreview name={theme.name} />
<div className="mt-3 flex items-start justify-between gap-3 px-1">
<div className="min-w-0">
<div className="truncate text-[length:var(--conversation-text-font-size)] font-medium">
{theme.label}
</div>
<div className="mt-0.5 line-clamp-2 text-[length:var(--conversation-caption-font-size)] leading-(--conversation-caption-line-height) text-(--ui-text-tertiary)">
{theme.description}
</div>
</div>
{active && (
<span className="mt-0.5 grid size-5 shrink-0 place-items-center rounded-full bg-primary text-primary-foreground">
<Check className="size-3.5" />
</span>
)}
</div>
</button>
{removable && (
<button
aria-label={a.removeTheme}
className="absolute right-1.5 top-1.5 grid size-6 place-items-center rounded-md bg-(--ui-bg-elevated)/80 text-(--ui-text-tertiary) opacity-0 backdrop-blur-sm transition hover:text-(--ui-red) focus-visible:opacity-100 group-hover:opacity-100"
onClick={() => {
triggerHaptic('crisp')
removeUserTheme(theme.name)
// Re-normalize off the now-missing skin → default.
if (active) {
setTheme(theme.name)
}
}}
title={a.removeTheme}
type="button"
>
<Trash2 className="size-3.5" />
</button>
)}
</div>
)
})}
</div>
<VscodeThemeInstaller />
{showProfileNote && (
<p className="mt-3 text-[length:var(--conversation-caption-font-size)] leading-(--conversation-caption-line-height) text-(--ui-text-tertiary)">
{a.themeProfileNote(activeProfileName)}

View file

@ -96,10 +96,40 @@ declare global {
summary: () => Promise<DesktopUninstallSummary>
run: (mode: DesktopUninstallMode) => Promise<DesktopUninstallResult>
}
themes: {
// Download a VS Code Marketplace extension and return the raw color
// theme files it contributes. The renderer converts + persists them.
fetchMarketplace: (id: string) => Promise<DesktopMarketplaceThemeResult>
// Search the Marketplace for color-theme extensions. An empty query
// returns the most-installed themes.
searchMarketplace: (query: string) => Promise<DesktopMarketplaceSearchItem[]>
}
}
}
}
export interface DesktopMarketplaceSearchItem {
extensionId: string
displayName: string
publisher: string
description: string
installs: number
}
export interface DesktopMarketplaceThemeFile {
label: string
/** VS Code's `uiTheme` for this entry (vs-dark / vs / hc-black). */
uiTheme?: string
/** Raw theme JSON (JSONC) text, parsed + converted by the renderer. */
contents: string
}
export interface DesktopMarketplaceThemeResult {
extensionId: string
displayName: string
themes: DesktopMarketplaceThemeFile[]
}
export interface HermesTerminalSession {
cwd: string
id: string

View file

@ -302,7 +302,17 @@ export const en: Translations = {
technicalDesc: 'Include raw tool args/results and low-level details.',
themeTitle: 'Theme',
themeDesc: 'Desktop palettes only. The selected mode is applied on top.',
themeProfileNote: profile => `Saved for the ${profile} profile — each profile keeps its own theme.`
themeProfileNote: profile => `Saved for the ${profile} profile — each profile keeps its own theme.`,
installTitle: 'Install from VS Code',
installDesc:
'Paste a Marketplace extension id (e.g. dracula-theme.theme-dracula) to convert its color theme into a desktop palette.',
installPlaceholder: 'publisher.extension',
installButton: 'Install',
installing: 'Installing…',
installError: 'Could not install that theme.',
installed: name => `Installed “${name}”.`,
removeTheme: 'Remove theme',
importedBadge: 'Imported'
},
fieldLabels: FIELD_LABELS,
fieldDescriptions: FIELD_DESCRIPTIONS,
@ -636,6 +646,17 @@ export const en: Translations = {
settings: 'Settings',
changeTheme: 'Change theme...',
changeColorMode: 'Change color mode...',
installTheme: {
title: 'Install theme...',
placeholder: 'Search the VS Code Marketplace...',
loading: 'Searching the Marketplace...',
error: 'Could not reach the Marketplace.',
empty: 'No matching themes.',
install: 'Install',
installing: 'Installing...',
installed: 'Installed',
installs: count => `${count} installs`
},
settingsFields: 'Settings fields',
mcpServers: 'MCP servers',
archivedChats: 'Archived chats',

View file

@ -216,7 +216,16 @@ export const ja = defineLocale({
technicalDesc: '生のツール引数、結果、低レベルの詳細を含めます。',
themeTitle: 'テーマ',
themeDesc: 'デスクトップ専用のパレットです。選択したモードの上に適用されます。',
themeProfileNote: profile => `${profile}」プロファイルに保存されます。プロファイルごとに個別のテーマを保持します。`
themeProfileNote: profile => `${profile}」プロファイルに保存されます。プロファイルごとに個別のテーマを保持します。`,
installTitle: 'VS Code から導入',
installDesc: 'Marketplace の拡張機能 ID例: dracula-theme.theme-draculaを貼り付けると、その配色テーマをデスクトップ用パレットに変換します。',
installPlaceholder: 'publisher.extension',
installButton: 'インストール',
installing: 'インストール中…',
installError: 'そのテーマをインストールできませんでした。',
installed: name => `${name}」をインストールしました。`,
removeTheme: 'テーマを削除',
importedBadge: 'インポート済み'
},
fieldLabels: defineFieldCopy({
model: 'デフォルトモデル',
@ -762,6 +771,17 @@ export const ja = defineLocale({
settings: '設定',
changeTheme: 'テーマを変更...',
changeColorMode: 'カラーモードを変更...',
installTheme: {
title: 'テーマをインストール...',
placeholder: 'VS Code Marketplace を検索...',
loading: 'Marketplace を検索中...',
error: 'Marketplace に接続できませんでした。',
empty: '一致するテーマがありません。',
install: 'インストール',
installing: 'インストール中...',
installed: 'インストール済み',
installs: count => `${count} 回インストール`
},
settingsFields: '設定フィールド',
mcpServers: 'MCP サーバー',
archivedChats: 'アーカイブ済みチャット',

View file

@ -220,6 +220,15 @@ export interface Translations {
themeTitle: string
themeDesc: string
themeProfileNote: (profile: string) => string
installTitle: string
installDesc: string
installPlaceholder: string
installButton: string
installing: string
installError: string
installed: (name: string) => string
removeTheme: string
importedBadge: string
}
fieldLabels: Record<string, string>
fieldDescriptions: Record<string, string>
@ -534,6 +543,17 @@ export interface Translations {
settings: string
changeTheme: string
changeColorMode: string
installTheme: {
title: string
placeholder: string
loading: string
error: string
empty: string
install: string
installing: string
installed: string
installs: (count: string) => string
}
settingsFields: string
mcpServers: string
archivedChats: string

View file

@ -210,7 +210,16 @@ export const zhHant = defineLocale({
technicalDesc: '包含原始工具參數、結果與底層細節。',
themeTitle: '主題',
themeDesc: '僅限桌面端的調色盤。所選模式會套用在其上。',
themeProfileNote: profile => `已為「${profile}」設定檔儲存——每個設定檔保留各自的主題。`
themeProfileNote: profile => `已為「${profile}」設定檔儲存——每個設定檔保留各自的主題。`,
installTitle: '從 VS Code 安裝',
installDesc: '貼上 Marketplace 擴充功能 ID例如 dracula-theme.theme-dracula將其配色主題轉換為桌面調色盤。',
installPlaceholder: 'publisher.extension',
installButton: '安裝',
installing: '安裝中…',
installError: '無法安裝該主題。',
installed: name => `已安裝「${name}」。`,
removeTheme: '移除主題',
importedBadge: '已匯入'
},
fieldLabels: defineFieldCopy({
model: '預設模型',
@ -745,6 +754,17 @@ export const zhHant = defineLocale({
settings: '設定',
changeTheme: '變更主題...',
changeColorMode: '變更色彩模式...',
installTheme: {
title: '安裝主題...',
placeholder: '搜尋 VS Code Marketplace...',
loading: '正在搜尋 Marketplace...',
error: '無法連接到 Marketplace。',
empty: '沒有符合的主題。',
install: '安裝',
installing: '安裝中...',
installed: '已安裝',
installs: count => `${count} 次安裝`
},
settingsFields: '設定欄位',
mcpServers: 'MCP 伺服器',
archivedChats: '已封存聊天',

View file

@ -297,7 +297,16 @@ export const zh: Translations = {
technicalDesc: '包含原始工具参数/结果及底层细节。',
themeTitle: '主题',
themeDesc: '仅桌面端调色板。所选模式叠加其上。',
themeProfileNote: profile => `已为「${profile}」配置文件保存——每个配置文件保留各自的主题。`
themeProfileNote: profile => `已为「${profile}」配置文件保存——每个配置文件保留各自的主题。`,
installTitle: '从 VS Code 安装',
installDesc: '粘贴 Marketplace 扩展 ID例如 dracula-theme.theme-dracula将其配色主题转换为桌面调色板。',
installPlaceholder: 'publisher.extension',
installButton: '安装',
installing: '安装中…',
installError: '无法安装该主题。',
installed: name => `已安装「${name}」。`,
removeTheme: '移除主题',
importedBadge: '已导入'
},
fieldLabels: defineFieldCopy({
model: '默认模型',
@ -829,6 +838,17 @@ export const zh: Translations = {
settings: '设置',
changeTheme: '更改主题...',
changeColorMode: '更改颜色模式...',
installTheme: {
title: '安装主题...',
placeholder: '搜索 VS Code Marketplace...',
loading: '正在搜索 Marketplace...',
error: '无法连接到 Marketplace。',
empty: '没有匹配的主题。',
install: '安装',
installing: '安装中...',
installed: '已安装',
installs: count => `${count} 次安装`
},
settingsFields: '设置字段',
mcpServers: 'MCP 服务器',
archivedChats: '已归档对话',

View file

@ -0,0 +1,142 @@
/**
* Small color helpers shared by the theme context (synthesised light variants)
* and the VS Code theme converter (token seed mapping).
*
* Everything works in 6-digit `#rrggbb`. `normalizeHex` is the front door for
* untrusted input (VS Code themes use `#rgb`, `#rgba`, `#rrggbbaa`, and named
* tokens), flattening alpha over a backdrop so downstream math stays simple.
*/
export function hexToRgb(hex: string): [number, number, number] | null {
const clean = hex.trim().replace(/^#/, '')
if (!/^[0-9a-f]{6}$/i.test(clean)) {
return null
}
return [0, 2, 4].map(i => parseInt(clean.slice(i, i + 2), 16)) as [number, number, number]
}
export const rgbToHex = ([r, g, b]: [number, number, number]): string =>
`#${[r, g, b].map(n => Math.round(Math.min(255, Math.max(0, n))).toString(16).padStart(2, '0')).join('')}`
export function mix(a: string, b: string, amount: number): string {
const ar = hexToRgb(a)
const br = hexToRgb(b)
return ar && br
? rgbToHex([ar[0] + (br[0] - ar[0]) * amount, ar[1] + (br[1] - ar[1]) * amount, ar[2] + (br[2] - ar[2]) * amount])
: a
}
const linearize = (channel: number): number =>
channel <= 0.03928 ? channel / 12.92 : ((channel + 0.055) / 1.055) ** 2.4
/** WCAG relative luminance (gamma-corrected), 0..1. */
export function relativeLuminance(hex: string): number {
const rgb = hexToRgb(hex)
if (!rgb) {
return 0
}
const [r, g, b] = rgb.map(v => linearize(v / 255))
return 0.2126 * r + 0.7152 * g + 0.0722 * b
}
/** WCAG contrast ratio (1..21) between two hex colors. */
export function contrastRatio(a: string, b: string): number {
const la = relativeLuminance(a)
const lb = relativeLuminance(b)
return la >= lb ? (la + 0.05) / (lb + 0.05) : (lb + 0.05) / (la + 0.05)
}
/** Returns a readable foreground (#161616 or #ffffff) for a background hex. */
export function readableOn(hex: string): string {
return relativeLuminance(hex) > 0.58 ? '#161616' : '#ffffff'
}
/**
* Guarantee `color` reads against `bg`: if it's below `min` contrast, mix it
* toward white (on a dark bg) or black (on a light bg) in steps until it clears,
* keeping the hue as much as possible. Used so imported accents never collapse
* into a near-background sidebar (the "invisible label" case).
*/
export function ensureContrast(color: string, bg: string, min: number): string {
if (contrastRatio(color, bg) >= min) {
return color
}
const towards = relativeLuminance(bg) < 0.5 ? '#ffffff' : '#000000'
let best = color
for (let amount = 0.2; amount <= 1.0001; amount += 0.2) {
best = mix(color, towards, Math.min(amount, 1))
if (contrastRatio(best, bg) >= min) {
return best
}
}
return best
}
/** Perceptual-ish luminance in 0..1 (naive, for light/dark bucketing). */
export function luminance(hex: string): number {
const rgb = hexToRgb(hex)
if (!rgb) {
return 0
}
const [r, g, b] = rgb.map(v => v / 255)
return 0.2126 * r + 0.7152 * g + 0.0722 * b
}
/**
* Coerce any CSS hex color VS Code themes throw at us into a flat 6-digit
* `#rrggbb`, compositing alpha over `backdrop`. Accepts `#rgb`, `#rgba`,
* `#rrggbb`, `#rrggbbaa` (with or without the leading `#`). Returns null for
* non-hex values (named colors, `rgb()`, etc.) so callers can fall back.
*/
export function normalizeHex(input: string | undefined | null, backdrop = '#000000'): string | null {
if (typeof input !== 'string') {
return null
}
let clean = input.trim().replace(/^#/, '')
// Expand shorthand (#rgb / #rgba) to full width.
if (clean.length === 3 || clean.length === 4) {
clean = clean
.split('')
.map(ch => ch + ch)
.join('')
}
if (!/^[0-9a-f]{6}([0-9a-f]{2})?$/i.test(clean)) {
return null
}
const rgb = hexToRgb(`#${clean.slice(0, 6)}`)
if (!rgb) {
return null
}
if (clean.length === 6) {
return rgbToHex(rgb)
}
const alpha = parseInt(clean.slice(6, 8), 16) / 255
const base = hexToRgb(backdrop) ?? [0, 0, 0]
return rgbToHex([
base[0] + (rgb[0] - base[0]) * alpha,
base[1] + (rgb[1] - base[1]) * alpha,
base[2] + (rgb[2] - base[2]) * alpha
])
}

View file

@ -16,8 +16,10 @@ import { matchesQuery, useMediaQuery } from '@/hooks/use-media-query'
import { persistString, persistStringRecord, storedString, storedStringRecord } from '@/lib/storage'
import { $activeGatewayProfile, normalizeProfileKey } from '@/store/profile'
import { hexToRgb, mix, readableOn } from './color'
import { BUILTIN_THEME_LIST, BUILTIN_THEMES, DEFAULT_SKIN_NAME, DEFAULT_TYPOGRAPHY, nousTheme } from './presets'
import type { DesktopTheme, DesktopThemeColors } from './types'
import { $userThemes, resolveTheme } from './user-themes'
// Legacy global skin (pre per-profile themes). Still the inheritance fallback
// for any profile without its own assignment, so single-profile users and old
@ -41,7 +43,7 @@ const resolveMode = (mode: ThemeMode, systemDark = matchesQuery('(prefers-color-
mode === 'system' ? (systemDark ? 'dark' : 'light') : mode
const normalizeSkin = (name: string | null): string =>
name && BUILTIN_THEMES[name] && !RETIRED_SKINS.has(name) ? name : DEFAULT_SKIN_NAME
name && resolveTheme(name) && !RETIRED_SKINS.has(name) ? name : DEFAULT_SKIN_NAME
const normalizeMode = (value: string | null): ThemeMode =>
value === 'light' || value === 'dark' || value === 'system' ? value : 'light'
@ -71,44 +73,8 @@ const readBootProfileKey = () => normalizeProfileKey(storedString(LAST_PROFILE_K
const rememberActiveProfileKey = (profile: string) => persistString(LAST_PROFILE_KEY, profile)
// ─── Color math (for synthesised light variants of dark-only skins) ────────
function hexToRgb(hex: string): [number, number, number] | null {
const clean = hex.trim().replace(/^#/, '')
if (!/^[0-9a-f]{6}$/i.test(clean)) {
return null
}
return [0, 2, 4].map(i => parseInt(clean.slice(i, i + 2), 16)) as [number, number, number]
}
const rgbToHex = ([r, g, b]: [number, number, number]) =>
`#${[r, g, b].map(n => Math.round(n).toString(16).padStart(2, '0')).join('')}`
function mix(a: string, b: string, amount: number): string {
const ar = hexToRgb(a)
const br = hexToRgb(b)
return ar && br
? rgbToHex([ar[0] + (br[0] - ar[0]) * amount, ar[1] + (br[1] - ar[1]) * amount, ar[2] + (br[2] - ar[2]) * amount])
: a
}
function readableOn(hex: string): string {
const rgb = hexToRgb(hex)
if (!rgb) {
return '#ffffff'
}
const [r, g, b] = rgb.map(v => {
const c = v / 255
return c <= 0.03928 ? c / 12.92 : ((c + 0.055) / 1.055) ** 2.4
})
return 0.2126 * r + 0.7152 * g + 0.0722 * b > 0.58 ? '#161616' : '#ffffff'
}
// hexToRgb / mix / readableOn live in ./color so the VS Code converter shares
// the exact same math.
function synthLightColors(seed: DesktopTheme): DesktopThemeColors {
const accent = seed.colors.ring || seed.colors.primary
@ -148,7 +114,7 @@ function synthLightColors(seed: DesktopTheme): DesktopThemeColors {
/** Returns the seed palette for a given skin + mode (no overrides applied). */
export function getBaseColors(skinName: string, mode: 'light' | 'dark'): DesktopThemeColors {
const seed = BUILTIN_THEMES[skinName] ?? nousTheme
const seed = resolveTheme(skinName) ?? nousTheme
if (mode === 'dark') {
return seed.darkColors ?? seed.colors
@ -158,7 +124,7 @@ export function getBaseColors(skinName: string, mode: 'light' | 'dark'): Desktop
}
function deriveTheme(skinName: string, mode: 'light' | 'dark'): DesktopTheme {
const seed = BUILTIN_THEMES[skinName] ?? nousTheme
const seed = resolveTheme(skinName) ?? nousTheme
return {
...seed,
@ -310,6 +276,20 @@ export function ThemeProvider({ children }: { children: ReactNode }) {
// behavior is unchanged.
const profileKey = normalizeProfileKey(useStore($activeGatewayProfile))
// Built-ins + user-installed themes. Reactive so an import shows up live in
// the palette, settings grid, and `/skin` without a reload.
const userThemes = useStore($userThemes)
const availableThemes = useMemo(
() =>
[...Object.values(BUILTIN_THEMES), ...Object.values(userThemes)].map(({ name, label, description }) => ({
name,
label,
description
})),
[userThemes]
)
const [themeName, setThemeNameState] = useState(() =>
typeof window === 'undefined' ? DEFAULT_SKIN_NAME : skinPref.resolve(readBootProfileKey())
)
@ -351,8 +331,8 @@ export function ThemeProvider({ children }: { children: ReactNode }) {
// (`appearance.toggleMode`) so it shows up in the hotkey map and is rebindable.
const value = useMemo<ThemeContextValue>(
() => ({ theme: activeTheme, themeName, mode, resolvedMode, availableThemes: SKIN_LIST, setTheme, setMode }),
[activeTheme, themeName, mode, resolvedMode, setTheme, setMode]
() => ({ theme: activeTheme, themeName, mode, resolvedMode, availableThemes, setTheme, setMode }),
[activeTheme, themeName, mode, resolvedMode, availableThemes, setTheme, setMode]
)
return <ThemeContext.Provider value={value}>{children}</ThemeContext.Provider>

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@ -0,0 +1,65 @@
import { describe, expect, it } from 'vitest'
import type { DesktopMarketplaceThemeResult } from '@/global'
import { luminance } from './color'
import { buildThemeFromMarketplace } from './install'
const themeJson = (type: 'light' | 'dark', background: string, foreground: string) =>
JSON.stringify({ type, colors: { 'editor.background': background, 'editor.foreground': foreground } })
describe('buildThemeFromMarketplace', () => {
it('folds a light + dark variant into one family with both slots', () => {
const result: DesktopMarketplaceThemeResult = {
extensionId: 'ryanolsonx.solarized',
displayName: 'Solarized',
themes: [
{ label: 'Solarized Light', uiTheme: 'vs', contents: themeJson('light', '#fdf6e3', '#586e75') },
{ label: 'Solarized Dark', uiTheme: 'vs-dark', contents: themeJson('dark', '#002b36', '#93a1a1') }
]
}
const theme = buildThemeFromMarketplace(result)
expect(theme.label).toBe('Solarized')
expect(theme.name).toBe('vsc-solarized')
// colors = the light variant, darkColors = the dark variant → the toggle works.
expect(theme.colors.background).toBe('#fdf6e3')
expect(theme.darkColors?.background).toBe('#002b36')
expect(luminance(theme.colors.background)).toBeGreaterThan(0.5)
expect(luminance(theme.darkColors!.background)).toBeLessThan(0.5)
})
it('orders variants by contribution regardless of light/dark sequence', () => {
const result: DesktopMarketplaceThemeResult = {
extensionId: 'github.github-vscode-theme',
displayName: 'GitHub Theme',
themes: [
{ label: 'GitHub Dark Default', uiTheme: 'vs-dark', contents: themeJson('dark', '#0d1117', '#e6edf3') },
{ label: 'GitHub Light Default', uiTheme: 'vs', contents: themeJson('light', '#ffffff', '#1f2328') }
]
}
const theme = buildThemeFromMarketplace(result)
expect(theme.colors.background).toBe('#ffffff')
expect(theme.darkColors?.background).toBe('#0d1117')
})
it('fills both slots with the sole palette for a single-variant extension', () => {
const result: DesktopMarketplaceThemeResult = {
extensionId: 'dracula-theme.theme-dracula',
displayName: 'Dracula',
themes: [{ label: 'Dracula', uiTheme: 'vs-dark', contents: themeJson('dark', '#282a36', '#f8f8f2') }]
}
const theme = buildThemeFromMarketplace(result)
expect(theme.colors.background).toBe('#282a36')
expect(theme.darkColors).toBe(theme.colors)
})
it('throws when the extension contributes no themes', () => {
expect(() =>
buildThemeFromMarketplace({ extensionId: 'x.y', displayName: 'X', themes: [] })
).toThrow(/does not contribute/i)
})
})

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@ -0,0 +1,87 @@
/**
* Install desktop themes from external sources.
*
* The heavy lifting (network + .vsix unzip) lives in the Electron main process
* (`electron/vscode-marketplace.cjs`), reached via `window.hermesDesktop.themes`.
* Main hands back the raw theme JSON; we parse + convert + persist here so the
* conversion stays in one unit-testable place.
*/
import type { DesktopMarketplaceThemeResult } from '@/global'
import type { DesktopTheme } from './types'
import { installUserTheme } from './user-themes'
import { convertVscodeColorTheme, parseVscodeTheme, vscodeThemeSlug } from './vscode'
/** A `publisher.extension` id, e.g. `dracula-theme.theme-dracula`. */
export const MARKETPLACE_ID_RE = /^[\w-]+\.[\w-]+$/
/** Parse + convert + persist a pasted VS Code theme JSON. */
export function installVscodeThemeFromText(
text: string,
opts?: { label?: string; source?: string }
): DesktopTheme {
const raw = parseVscodeTheme(text)
const { theme } = convertVscodeColorTheme(raw, opts)
return installUserTheme(theme)
}
/**
* Fold every color theme an extension contributes into ONE desktop theme family.
*
* Many extensions ship a light *and* a dark variant (GitHub, Solarized, Winter
* is Coming). Rather than install them as separate flat entries which made
* the light/dark toggle a no-op and let "install in dark mode" land on the light
* variant we map the first light variant onto `colors` and the first dark
* variant onto `darkColors`. The result is a single picker entry whose light/dark
* toggle switches between the real variants. A single-variant extension fills
* both slots with its one palette (the toggle is a no-op, as it must be).
*/
export function buildThemeFromMarketplace(result: DesktopMarketplaceThemeResult): DesktopTheme {
if (!result.themes.length) {
throw new Error(`"${result.extensionId}" does not contribute any color themes.`)
}
const variants = result.themes.map(file => {
const raw = parseVscodeTheme(file.contents)
const label = file.label || raw.name || result.displayName
const { mode, theme } = convertVscodeColorTheme(raw, { label, source: result.extensionId })
return { mode, palette: theme.colors }
})
const fallback = variants[0].palette
const light = variants.find(variant => variant.mode === 'light')?.palette
const dark = variants.find(variant => variant.mode === 'dark')?.palette
return {
name: vscodeThemeSlug(result.displayName),
label: result.displayName,
description: `VS Code · ${result.extensionId}`,
colors: light ?? dark ?? fallback,
darkColors: dark ?? light ?? fallback
}
}
/**
* Download a Marketplace extension and install the theme family it contributes
* (see `buildThemeFromMarketplace`). Returns the single installed theme.
*/
export async function installVscodeThemeFromMarketplace(id: string): Promise<DesktopTheme> {
const trimmed = id.trim()
if (!MARKETPLACE_ID_RE.test(trimmed)) {
throw new Error('Expected a Marketplace id like "publisher.extension".')
}
const api = window.hermesDesktop?.themes
if (!api?.fetchMarketplace) {
throw new Error('Marketplace install is only available in the desktop app.')
}
const result = await api.fetchMarketplace(trimmed)
return installUserTheme(buildThemeFromMarketplace(result))
}

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@ -0,0 +1,63 @@
import { beforeEach, describe, expect, it } from 'vitest'
import { BUILTIN_THEMES, DEFAULT_SKIN_NAME } from './presets'
import { $userThemes, installUserTheme, isUserTheme, listAllThemes, removeUserTheme, resolveTheme } from './user-themes'
import { convertVscodeColorTheme } from './vscode'
const makeTheme = (label: string) =>
convertVscodeColorTheme({
name: label,
type: 'dark',
colors: { 'editor.background': '#101014', 'editor.foreground': '#fafafa', focusBorder: '#7aa2f7' }
}).theme
describe('user theme registry', () => {
beforeEach(() => {
window.localStorage.clear()
$userThemes.set({})
})
it('installs a theme into the merged registry and persists it', () => {
const theme = installUserTheme(makeTheme('Tokyo Night'))
expect(isUserTheme(theme.name)).toBe(true)
expect(resolveTheme(theme.name)).toEqual(theme)
expect(listAllThemes().map(t => t.name)).toContain(theme.name)
expect(window.localStorage.getItem('hermes-desktop-user-themes-v1')).toContain(theme.name)
})
it('lists built-ins before user themes', () => {
installUserTheme(makeTheme('Custom'))
const names = listAllThemes().map(t => t.name)
expect(names.slice(0, Object.keys(BUILTIN_THEMES).length)).toEqual(Object.keys(BUILTIN_THEMES))
expect(names.at(-1)).toBe('vsc-custom')
})
it('removes a theme', () => {
const theme = installUserTheme(makeTheme('Throwaway'))
removeUserTheme(theme.name)
expect(isUserTheme(theme.name)).toBe(false)
expect(resolveTheme(theme.name)).toBeUndefined()
})
it('resolves built-ins through the same lookup', () => {
expect(resolveTheme(DEFAULT_SKIN_NAME)).toBe(BUILTIN_THEMES[DEFAULT_SKIN_NAME])
})
it('refuses to shadow a built-in name', () => {
const builtinName = makeTheme('x')
builtinName.name = DEFAULT_SKIN_NAME
expect(() => installUserTheme(builtinName)).toThrow(/built-in/)
})
it('rejects a theme missing required colors', () => {
const broken = makeTheme('Broken')
// @ts-expect-error — intentionally corrupt the palette for the test.
broken.colors = { background: '#000000' }
expect(() => installUserTheme(broken)).toThrow(/colors/)
})
})

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@ -0,0 +1,122 @@
/**
* User-installed desktop themes (currently: converted VS Code themes).
*
* This is the extensibility seam. The theme context reads the *merged* registry
* (built-ins + user themes) for `availableThemes` and for every skin lookup, so
* an installed theme shows up everywhere a built-in does the Cmd-K palette,
* the Appearance settings grid, and `/skin` with no per-surface wiring.
*
* Stored as a localStorage record so the boot-time paint (which runs before
* React mounts) can resolve a user theme synchronously, same as built-ins.
*/
import { atom } from 'nanostores'
import { BUILTIN_THEMES } from './presets'
import type { DesktopTheme, DesktopThemeColors } from './types'
const USER_THEMES_KEY = 'hermes-desktop-user-themes-v1'
// The minimal set of color keys a stored theme must carry to be usable. We keep
// this loose — `applyTheme` tolerates missing optionals via fallbacks — but a
// theme with no background/foreground/primary is junk and gets dropped.
const REQUIRED_COLOR_KEYS: ReadonlyArray<keyof DesktopThemeColors> = ['background', 'foreground', 'primary']
function isValidTheme(value: unknown): value is DesktopTheme {
if (!value || typeof value !== 'object') {
return false
}
const theme = value as Partial<DesktopTheme>
if (typeof theme.name !== 'string' || typeof theme.label !== 'string' || !theme.colors) {
return false
}
const colors = theme.colors as unknown as Record<string, unknown>
return REQUIRED_COLOR_KEYS.every(key => typeof colors[key] === 'string')
}
function readStored(): Record<string, DesktopTheme> {
try {
const raw = window.localStorage.getItem(USER_THEMES_KEY)
if (!raw) {
return {}
}
const parsed: unknown = JSON.parse(raw)
if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed)) {
return {}
}
const out: Record<string, DesktopTheme> = {}
for (const [key, value] of Object.entries(parsed)) {
// Never let a stored theme shadow a built-in name.
if (!BUILTIN_THEMES[key] && isValidTheme(value)) {
out[key] = value
}
}
return out
} catch {
return {}
}
}
function persist(record: Record<string, DesktopTheme>) {
try {
window.localStorage.setItem(USER_THEMES_KEY, JSON.stringify(record))
} catch {
// Best-effort: a restricted storage context shouldn't break theming.
}
}
/** Reactive map of installed user themes, keyed by slug. */
export const $userThemes = atom<Record<string, DesktopTheme>>(typeof window === 'undefined' ? {} : readStored())
/** Install (or replace) a user theme. Returns the stored theme. */
export function installUserTheme(theme: DesktopTheme): DesktopTheme {
if (BUILTIN_THEMES[theme.name]) {
throw new Error(`"${theme.name}" collides with a built-in theme.`)
}
if (!isValidTheme(theme)) {
throw new Error('Theme is missing required colors.')
}
const next = { ...$userThemes.get(), [theme.name]: theme }
$userThemes.set(next)
persist(next)
return theme
}
/** Remove a user theme by slug. No-op for unknown / built-in names. */
export function removeUserTheme(name: string): void {
const current = $userThemes.get()
if (!current[name]) {
return
}
const next = { ...current }
delete next[name]
$userThemes.set(next)
persist(next)
}
export const isUserTheme = (name: string): boolean => Boolean($userThemes.get()[name])
/** Resolve a theme by name across the merged registry (built-in + user). */
export function resolveTheme(name: string): DesktopTheme | undefined {
return BUILTIN_THEMES[name] ?? $userThemes.get()[name]
}
/** Built-ins first (stable order), then user themes by install order. */
export function listAllThemes(): DesktopTheme[] {
return [...Object.values(BUILTIN_THEMES), ...Object.values($userThemes.get())]
}

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@ -0,0 +1,113 @@
import { describe, expect, it } from 'vitest'
import { contrastRatio } from './color'
import { convertVscodeColorTheme, parseVscodeTheme, vscodeThemeSlug } from './vscode'
describe('vscodeThemeSlug', () => {
it('namespaces, lowercases, and dashes', () => {
expect(vscodeThemeSlug('Dracula Soft')).toBe('vsc-dracula-soft')
expect(vscodeThemeSlug(' One Dark Pro!! ')).toBe('vsc-one-dark-pro')
})
it('falls back when the name has no usable characters', () => {
expect(vscodeThemeSlug('—')).toBe('vsc-theme')
})
})
describe('parseVscodeTheme (JSONC tolerance)', () => {
it('strips comments and trailing commas', () => {
const text = `{
// a line comment
"name": "Demo",
/* block comment */
"type": "dark",
"colors": {
"editor.background": "#1e1e2e", // inline
},
}`
const parsed = parseVscodeTheme(text)
expect(parsed.name).toBe('Demo')
expect(parsed.colors?.['editor.background']).toBe('#1e1e2e')
})
it('throws on a non-object', () => {
expect(() => parseVscodeTheme('42')).toThrow()
})
})
describe('convertVscodeColorTheme', () => {
const dracula = {
name: 'Dracula',
type: 'dark',
colors: {
'editor.background': '#282a36',
'editor.foreground': '#f8f8f2',
focusBorder: '#6272a4',
'editorWidget.background': '#21222c',
'sideBar.background': '#21222c',
errorForeground: '#ff5555',
// 8-digit hex (alpha) — must flatten over the background.
'panel.border': '#bd93f900'
}
}
it('maps the load-bearing tokens onto the palette', () => {
const { theme } = convertVscodeColorTheme(dracula, { source: 'dracula-theme.theme-dracula' })
expect(theme.name).toBe('vsc-dracula')
expect(theme.label).toBe('Dracula')
expect(theme.description).toContain('dracula-theme.theme-dracula')
expect(theme.colors.background).toBe('#282a36')
expect(theme.colors.foreground).toBe('#f8f8f2')
// One accent drives primary + ring + midground together...
expect(theme.colors.ring).toBe(theme.colors.primary)
expect(theme.colors.midground).toBe(theme.colors.primary)
// ...and it's nudged until it reads on the sidebar it labels (the dim
// focusBorder #6272a4 sits below AA, so it's lifted).
expect(contrastRatio(theme.colors.primary, theme.colors.sidebarBackground!)).toBeGreaterThanOrEqual(4.5)
expect(theme.colors.popover).toBe('#21222c')
expect(theme.colors.sidebarBackground).toBe('#21222c')
expect(theme.colors.destructive).toBe('#ff5555')
})
it('flattens alpha hex over the background (no #rrggbbaa leaks)', () => {
const { theme } = convertVscodeColorTheme(dracula)
expect(theme.colors.border).toMatch(/^#[0-9a-f]{6}$/)
// 00 alpha over the bg means the border collapses to the background.
expect(theme.colors.border).toBe('#282a36')
})
it('renders identically in both modes (single palette in both slots)', () => {
const { theme } = convertVscodeColorTheme(dracula)
expect(theme.darkColors).toBe(theme.colors)
})
it('records derived fallbacks for omitted tokens', () => {
const { derived } = convertVscodeColorTheme({
name: 'Sparse',
type: 'dark',
colors: { 'editor.background': '#101010', 'editor.foreground': '#fafafa' }
})
// No accent/elevated/sidebar/error tokens → all derived. The accent records
// its first candidate (button.background) when none of the family is present.
expect(derived).toContain('button.background')
expect(derived).toContain('editorWidget.background')
expect(derived).toContain('editorError.foreground')
})
it('buckets light vs dark from background luminance when type is absent', () => {
const light = convertVscodeColorTheme({
name: 'Bright',
colors: { 'editor.background': '#ffffff', 'editor.foreground': '#1a1a1a' }
}).theme
// A light background should keep a near-white background, not synth dark.
expect(light.colors.background).toBe('#ffffff')
})
it('throws when there is no colors map', () => {
expect(() => convertVscodeColorTheme({ name: 'Empty' })).toThrow(/colors/)
})
})

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@ -0,0 +1,260 @@
/**
* VS Code color-theme DesktopTheme converter.
*
* VS Code themes carry ~hundreds of `workbench.colorCustomization` keys, but the
* desktop theme model only needs a `DesktopThemeColors` struct `applyTheme`
* derives every glass/shadcn token from a small seed chain via `color-mix()`.
* In practice ~6 workbench keys carry the whole look (background, foreground,
* accent, elevated surface, sidebar, error); everything else we derive by mixing
* those toward the background/foreground. That's the "naive token converter".
*
* A VS Code theme is single-mode (light OR dark). Rather than synthesise the
* opposite mode, we set both `colors` and `darkColors` to the converted palette
* so the imported theme renders faithfully no matter where the light/dark toggle
* sits `renderedModeFor` still picks the `.dark` class from the real
* background luminance, so surface-bound UI matches what's on screen.
*/
import { ensureContrast, luminance, mix, normalizeHex, readableOn } from './color'
import type { DesktopTheme, DesktopThemeColors } from './types'
// Section headers / sidebar labels render in --theme-primary directly on the
// sidebar surface as small (~10px) uppercase text, so the accent has to clear
// WCAG AA for normal text (4.5:1) or it's unreadable — the "invisible purple
// label" case. Imported accents below this get nudged lighter/darker.
const ACCENT_MIN_CONTRAST = 4.5
/** The shape of a VS Code `*-color-theme.json` (only the fields we read). */
export interface VscodeColorTheme {
name?: string
type?: string
/** Relative path to a base theme this one extends. We don't follow it. */
include?: string
colors?: Record<string, unknown>
tokenColors?: unknown
}
export interface ConvertOptions {
/** Stable id (slug). Defaults to a slug of `raw.name`. */
slug?: string
/** Display label. Defaults to `raw.name`. */
label?: string
/** Shown under the label in the picker (e.g. the marketplace extension id). */
source?: string
}
export interface ConvertResult {
theme: DesktopTheme
/** The source theme's own light/dark (from `type`, else background luminance). */
mode: 'light' | 'dark'
/** Workbench keys we wanted but the theme omitted (we derived fallbacks). */
derived: string[]
}
/** Tolerant slug: lowercase, alnum + dashes, deduped, `vsc-` namespaced. */
export function vscodeThemeSlug(name: string): string {
const base = name
.trim()
.toLowerCase()
.replace(/[^a-z0-9]+/g, '-')
.replace(/^-+|-+$/g, '')
.slice(0, 48)
return `vsc-${base || 'theme'}`
}
/**
* Parse a VS Code theme file. These ship as JSONC (line/block comments and
* trailing commas), so a plain `JSON.parse` rejects most real-world files.
* Strips comments + trailing commas, then parses. Throws on hard syntax errors.
*/
export function parseVscodeTheme(text: string): VscodeColorTheme {
const stripped = text
// Block comments.
.replace(/\/\*[\s\S]*?\*\//g, '')
// Line comments (not inside strings — naive but fine for theme files).
.replace(/(^|[^:"'\\])\/\/[^\n\r]*/g, '$1')
// Trailing commas before } or ].
.replace(/,(\s*[}\]])/g, '$1')
const parsed: unknown = JSON.parse(stripped)
if (!parsed || typeof parsed !== 'object') {
throw new Error('Theme file is not a JSON object.')
}
return parsed as VscodeColorTheme
}
const isDarkType = (raw: VscodeColorTheme, background: string): boolean => {
const type = (raw.type ?? '').toLowerCase()
if (type.includes('light')) {
return false
}
if (type === 'dark' || type === 'hc' || type === 'hc-black' || type.includes('dark')) {
return true
}
// No usable `type` — bucket by background luminance.
return luminance(background) < 0.4
}
/** First normalizable hex among `keys`, composited over `backdrop`. */
const pick = (
colors: Record<string, unknown>,
keys: string[],
backdrop: string
): { key: string; value: string } | null => {
for (const key of keys) {
const value = normalizeHex(typeof colors[key] === 'string' ? (colors[key] as string) : null, backdrop)
if (value) {
return { key, value }
}
}
return null
}
export function convertVscodeColorTheme(raw: VscodeColorTheme, opts: ConvertOptions = {}): ConvertResult {
const colors = raw.colors && typeof raw.colors === 'object' ? (raw.colors as Record<string, unknown>) : null
if (!colors) {
throw new Error('Theme has no "colors" map — not a VS Code color theme.')
}
const derived: string[] = []
// Background first: it's the backdrop every other token flattens alpha over.
const backgroundHit = pick(colors, ['editor.background', 'editorPane.background', 'editorGroup.background'], '#000000')
const dark = isDarkType(raw, backgroundHit?.value ?? '#1e1e1e')
const background = backgroundHit?.value ?? (dark ? '#1e1e1e' : '#ffffff')
if (!backgroundHit) {
derived.push('editor.background')
}
// `take` records a derived fallback when the theme omits the key.
const take = (keys: string[], fallback: string): string => {
const hit = pick(colors, keys, background)
if (hit) {
return hit.value
}
derived.push(keys[0])
return fallback
}
const foreground = take(['editor.foreground', 'foreground'], dark ? '#d4d4d4' : '#1f1f1f')
// Brand accent — the single most load-bearing token. Drives primary buttons,
// focus rings, the streaming cursor, active-session pills, and sidebar labels.
// Prefer the saturated "brand" tokens (button / link / badge) over focusBorder,
// which many themes set to a muted gray — picking it first made imported
// accents look like the desktop defaults. We enforce contrast below regardless.
const accentSource = take(
[
'button.background',
'textLink.activeForeground',
'textLink.foreground',
'activityBarBadge.background',
'badge.background',
'progressBar.background',
'pickerGroup.foreground',
'list.highlightForeground',
'editorLink.activeForeground',
'focusBorder',
'tab.activeBorder',
'statusBarItem.remoteBackground'
],
mix(foreground, background, 0.55)
)
const elevated = take(
['editorWidget.background', 'dropdown.background', 'menu.background', 'quickInput.background', 'editorSuggestWidget.background'],
mix(background, foreground, dark ? 0.08 : 0.05)
)
const card = take(
['sideBarSectionHeader.background', 'tab.inactiveBackground', 'editorGroupHeader.tabsBackground'],
mix(background, foreground, dark ? 0.04 : 0.025)
)
const sidebar = take(['sideBar.background', 'activityBar.background'], mix(background, foreground, dark ? 0.02 : 0.012))
// The accent labels the sidebar (--theme-primary), so guarantee it reads
// there — otherwise low-contrast brand colors leave invisible section headers.
const accent = ensureContrast(accentSource, sidebar, ACCENT_MIN_CONTRAST)
const border = take(
['panel.border', 'editorGroup.border', 'sideBar.border', 'contrastBorder', 'widget.border', 'input.border'],
mix(background, foreground, dark ? 0.16 : 0.14)
)
const input = take(['input.background', 'dropdown.background', 'quickInput.background'], mix(background, foreground, dark ? 0.1 : 0.06))
const mutedForeground = take(
['descriptionForeground', 'editorLineNumber.foreground', 'tab.inactiveForeground', 'disabledForeground'],
mix(foreground, background, 0.45)
)
const destructive = take(
['editorError.foreground', 'errorForeground', 'editorOverviewRuler.errorForeground', 'notificationsErrorIcon.foreground'],
'#e25563'
)
const muted = mix(background, foreground, dark ? 0.06 : 0.04)
const accentSoft = mix(accent, background, dark ? 0.82 : 0.88)
const secondary = mix(accent, background, dark ? 0.72 : 0.86)
const palette: DesktopThemeColors = {
background,
foreground,
card,
cardForeground: foreground,
muted,
mutedForeground,
popover: elevated,
popoverForeground: foreground,
primary: accent,
primaryForeground: readableOn(accent),
secondary,
secondaryForeground: foreground,
accent: accentSoft,
accentForeground: foreground,
border,
input,
ring: accent,
midground: accent,
midgroundForeground: readableOn(accent),
composerRing: accent,
destructive,
destructiveForeground: readableOn(destructive),
sidebarBackground: sidebar,
sidebarBorder: border,
userBubble: mix(card, accent, dark ? 0.18 : 0.12),
userBubbleBorder: border
}
const label = (opts.label ?? raw.name ?? 'VS Code Theme').trim()
const slug = opts.slug ?? vscodeThemeSlug(label)
return {
derived,
mode: dark ? 'dark' : 'light',
theme: {
name: slug,
label,
description: opts.source ? `VS Code · ${opts.source}` : 'Imported from VS Code',
// Single palette in both slots. A lone VS Code theme is one-mode; callers
// that have both a light and dark variant (a Marketplace extension family)
// recombine them into proper colors/darkColors via buildThemeFromMarketplace.
colors: palette,
darkColors: palette
}
}
}