Admin
352 lines
10 KiB
TypeScript
352 lines
10 KiB
TypeScript
export interface ColorScheme {
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light: string
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lightgray: string
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gray: string
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darkgray: string
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dark: string
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secondary: string
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tertiary: string
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highlight: string
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textHighlight: string
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}
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interface Colors {
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lightMode: ColorScheme
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darkMode: ColorScheme
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}
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export type FontSpecification =
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| string
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| {
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name: string
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weights?: number[]
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includeItalic?: boolean
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}
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export interface Theme {
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typography: {
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title?: FontSpecification
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header: FontSpecification
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body: FontSpecification
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code: FontSpecification
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}
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cdnCaching: boolean
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colors: Colors
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fontOrigin: "googleFonts" | "local"
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}
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export type ThemeKey = keyof Colors
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const DEFAULT_SANS_SERIF =
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'system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"'
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const DEFAULT_MONO = "ui-monospace, SFMono-Regular, SF Mono, Menlo, monospace"
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export function getFontSpecificationName(spec: FontSpecification): string {
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if (typeof spec === "string") {
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return spec
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}
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return spec.name
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}
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function formatFontSpecification(
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type: "title" | "header" | "body" | "code",
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spec: FontSpecification,
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) {
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if (typeof spec === "string") {
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spec = { name: spec }
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}
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const defaultIncludeWeights = type === "header" ? [400, 700] : [400, 600]
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const defaultIncludeItalic = type === "body"
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const weights = spec.weights ?? defaultIncludeWeights
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const italic = spec.includeItalic ?? defaultIncludeItalic
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const features: string[] = []
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if (italic) {
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features.push("ital")
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}
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if (weights.length > 1) {
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const weightSpec = italic
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? weights
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.flatMap((w) => [`0,${w}`, `1,${w}`])
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.sort()
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.join(";")
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: weights.join(";")
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features.push(`wght@${weightSpec}`)
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}
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if (features.length > 0) {
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return `${spec.name}:${features.join(",")}`
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}
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return spec.name
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}
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export function googleFontHref(theme: Theme) {
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const { header, body, code } = theme.typography
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const headerFont = formatFontSpecification("header", header)
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const bodyFont = formatFontSpecification("body", body)
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const codeFont = formatFontSpecification("code", code)
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return `https://fonts.googleapis.com/css2?family=${headerFont}&family=${bodyFont}&family=${codeFont}&display=swap`
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}
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export function googleFontSubsetHref(theme: Theme, text: string) {
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const title = theme.typography.title || theme.typography.header
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const titleFont = formatFontSpecification("title", title)
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return `https://fonts.googleapis.com/css2?family=${titleFont}&text=${encodeURIComponent(text)}&display=swap`
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}
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export interface GoogleFontFile {
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url: string
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filename: string
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extension: string
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}
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const fontMimeMap: Record<string, string> = {
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truetype: "ttf",
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woff: "woff",
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woff2: "woff2",
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opentype: "otf",
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}
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export async function processGoogleFonts(
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stylesheet: string,
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baseUrl: string,
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): Promise<{
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processedStylesheet: string
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fontFiles: GoogleFontFile[]
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}> {
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const fontSourceRegex =
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/url\((https:\/\/fonts.gstatic.com\/.+(?:\/|(?:kit=))(.+?)[.&].+?)\)\sformat\('(\w+?)'\);/g
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const fontFiles: GoogleFontFile[] = []
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let processedStylesheet = stylesheet
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let match
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while ((match = fontSourceRegex.exec(stylesheet)) !== null) {
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const url = match[1]
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const filename = match[2]
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const extension = fontMimeMap[match[3].toLowerCase()]
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const staticUrl = `https://${baseUrl}/static/fonts/${filename}.${extension}`
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processedStylesheet = processedStylesheet.replace(url, staticUrl)
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fontFiles.push({ url, filename, extension })
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}
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return { processedStylesheet, fontFiles }
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}
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function hexToHsl(hex: string): { h: number; s: number; l: number } {
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const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex)
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if (!result) return { h: 0, s: 0, l: 0 }
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const r = parseInt(result[1], 16) / 255
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const g = parseInt(result[2], 16) / 255
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const b = parseInt(result[3], 16) / 255
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const max = Math.max(r, g, b)
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const min = Math.min(r, g, b)
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const l = (max + min) / 2
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if (max === min) return { h: 0, s: 0, l: Math.round(l * 100) }
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const d = max - min
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const s = l > 0.5 ? d / (2 - max - min) : d / (max + min)
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let h = 0
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switch (max) {
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case r:
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h = ((g - b) / d + (g < b ? 6 : 0)) / 6
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break
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case g:
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h = ((b - r) / d + 2) / 6
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break
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case b:
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h = ((r - g) / d + 4) / 6
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break
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}
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return { h: Math.round(h * 360), s: Math.round(s * 100), l: Math.round(l * 100) }
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}
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export function joinStyles(theme: Theme, ...stylesheet: string[]) {
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return `
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${stylesheet.join("\n\n")}
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:root {
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--light: ${theme.colors.lightMode.light};
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--lightgray: ${theme.colors.lightMode.lightgray};
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--gray: ${theme.colors.lightMode.gray};
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--darkgray: ${theme.colors.lightMode.darkgray};
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--dark: ${theme.colors.lightMode.dark};
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--secondary: ${theme.colors.lightMode.secondary};
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--tertiary: ${theme.colors.lightMode.tertiary};
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--highlight: ${theme.colors.lightMode.highlight};
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--textHighlight: ${theme.colors.lightMode.textHighlight};
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--titleFont: "${getFontSpecificationName(theme.typography.title || theme.typography.header)}", ${DEFAULT_SANS_SERIF};
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--headerFont: "${getFontSpecificationName(theme.typography.header)}", ${DEFAULT_SANS_SERIF};
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--bodyFont: "${getFontSpecificationName(theme.typography.body)}", ${DEFAULT_SANS_SERIF};
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--codeFont: "${getFontSpecificationName(theme.typography.code)}", ${DEFAULT_MONO};
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}
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:root[saved-theme="dark"] {
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--light: ${theme.colors.darkMode.light};
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--lightgray: ${theme.colors.darkMode.lightgray};
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--gray: ${theme.colors.darkMode.gray};
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--darkgray: ${theme.colors.darkMode.darkgray};
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--dark: ${theme.colors.darkMode.dark};
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--secondary: ${theme.colors.darkMode.secondary};
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--tertiary: ${theme.colors.darkMode.tertiary};
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--highlight: ${theme.colors.darkMode.highlight};
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--textHighlight: ${theme.colors.darkMode.textHighlight};
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}
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:root {
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/* Surface colors */
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--background-primary: var(--light);
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--background-primary-alt: var(--light);
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--background-secondary: var(--lightgray);
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--background-secondary-alt: var(--lightgray);
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--background-modifier-border: var(--lightgray);
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--background-modifier-border-hover: var(--gray);
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--background-modifier-border-focus: var(--secondary);
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/* Text colors */
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--text-normal: var(--darkgray);
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--text-muted: var(--gray);
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--text-faint: var(--gray);
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--text-accent: var(--secondary);
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--text-accent-hover: var(--tertiary);
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--text-on-accent: var(--light);
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--text-on-accent-inverted: var(--dark);
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--text-highlight-bg: var(--textHighlight);
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/* Interactive */
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--interactive-normal: var(--light);
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--interactive-hover: var(--lightgray);
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--interactive-accent: var(--secondary);
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--interactive-accent-hover: var(--tertiary);
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/* Base scale */
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--color-base-00: var(--light);
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--color-base-05: var(--light);
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--color-base-10: var(--light);
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--color-base-20: var(--lightgray);
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--color-base-25: var(--lightgray);
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--color-base-30: var(--lightgray);
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--color-base-35: var(--lightgray);
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--color-base-40: var(--gray);
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--color-base-50: var(--gray);
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--color-base-60: var(--gray);
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--color-base-70: var(--darkgray);
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--color-base-100: var(--dark);
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/* Font aliases */
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--font-text: var(--bodyFont);
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--font-monospace: var(--codeFont);
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--font-interface: var(--bodyFont);
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/* Nav/sidebar */
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--nav-item-color: var(--darkgray);
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--nav-item-color-hover: var(--dark);
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--nav-item-color-active: var(--secondary);
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--nav-item-background-hover: var(--lightgray);
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--nav-item-background-active: var(--highlight);
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/* Tags */
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--tag-background: var(--highlight);
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--tag-color: var(--secondary);
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--tag-background-hover: var(--lightgray);
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/* Misc */
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--icon-color: var(--darkgray);
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--icon-color-hover: var(--dark);
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--icon-color-active: var(--secondary);
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--divider-color: var(--lightgray);
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--link-color: var(--secondary);
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--link-color-hover: var(--tertiary);
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/* Accent HSL (computed from secondary) */
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--accent-h: ${hexToHsl(theme.colors.lightMode.secondary).h};
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--accent-s: ${hexToHsl(theme.colors.lightMode.secondary).s}%;
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--accent-l: ${hexToHsl(theme.colors.lightMode.secondary).l}%;
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}
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:root[saved-theme="dark"] {
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/* Surface colors */
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--background-primary: var(--light);
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--background-primary-alt: var(--light);
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--background-secondary: var(--lightgray);
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--background-secondary-alt: var(--lightgray);
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--background-modifier-border: var(--lightgray);
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--background-modifier-border-hover: var(--gray);
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--background-modifier-border-focus: var(--secondary);
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/* Text colors */
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--text-normal: var(--darkgray);
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--text-muted: var(--gray);
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--text-faint: var(--gray);
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--text-accent: var(--secondary);
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--text-accent-hover: var(--tertiary);
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--text-on-accent: var(--light);
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--text-on-accent-inverted: var(--dark);
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--text-highlight-bg: var(--textHighlight);
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/* Interactive */
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--interactive-normal: var(--light);
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--interactive-hover: var(--lightgray);
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--interactive-accent: var(--secondary);
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--interactive-accent-hover: var(--tertiary);
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/* Base scale */
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--color-base-00: var(--light);
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--color-base-05: var(--light);
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--color-base-10: var(--light);
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--color-base-20: var(--lightgray);
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--color-base-25: var(--lightgray);
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--color-base-30: var(--lightgray);
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--color-base-35: var(--lightgray);
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--color-base-40: var(--gray);
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--color-base-50: var(--gray);
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--color-base-60: var(--gray);
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--color-base-70: var(--darkgray);
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--color-base-100: var(--dark);
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/* Font aliases */
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--font-text: var(--bodyFont);
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--font-monospace: var(--codeFont);
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--font-interface: var(--bodyFont);
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/* Nav/sidebar */
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--nav-item-color: var(--darkgray);
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--nav-item-color-hover: var(--dark);
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--nav-item-color-active: var(--secondary);
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--nav-item-background-hover: var(--lightgray);
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--nav-item-background-active: var(--highlight);
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/* Tags */
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--tag-background: var(--highlight);
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--tag-color: var(--secondary);
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--tag-background-hover: var(--lightgray);
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/* Misc */
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--icon-color: var(--darkgray);
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--icon-color-hover: var(--dark);
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--icon-color-active: var(--secondary);
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--divider-color: var(--lightgray);
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--link-color: var(--secondary);
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--link-color-hover: var(--tertiary);
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/* Accent HSL (computed from secondary) */
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--accent-h: ${hexToHsl(theme.colors.darkMode.secondary).h};
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--accent-s: ${hexToHsl(theme.colors.darkMode.secondary).s}%;
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--accent-l: ${hexToHsl(theme.colors.darkMode.secondary).l}%;
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}
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`
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}
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