mirror of
https://github.com/overleaf/overleaf.git
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283 lines
8.6 KiB
TypeScript
283 lines
8.6 KiB
TypeScript
import { EditorView } from '@codemirror/view'
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import { Annotation, Compartment, TransactionSpec } from '@codemirror/state'
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import { syntaxHighlighting } from '@codemirror/language'
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import { classHighlighter } from './class-highlighter'
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const optionsThemeConf = new Compartment()
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const selectedThemeConf = new Compartment()
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export const themeOptionsChange = Annotation.define<boolean>()
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export type FontFamily = 'monaco' | 'lucida'
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export type LineHeight = 'compact' | 'normal' | 'wide'
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export type OverallTheme = '' | 'light-'
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type Options = {
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fontSize: number
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fontFamily: FontFamily
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lineHeight: LineHeight
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overallTheme: OverallTheme
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}
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export const theme = (options: Options) => [
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baseTheme,
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staticTheme,
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/**
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* Syntax highlighting, using a highlighter which maps tags to class names.
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*/
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syntaxHighlighting(classHighlighter),
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optionsThemeConf.of(createThemeFromOptions(options)),
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selectedThemeConf.of([]),
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]
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export const setOptionsTheme = (options: Options): TransactionSpec => {
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return {
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effects: optionsThemeConf.reconfigure(createThemeFromOptions(options)),
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annotations: themeOptionsChange.of(true),
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}
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}
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export const setEditorTheme = async (
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editorTheme: string
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): Promise<TransactionSpec> => {
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const theme = await loadSelectedTheme(editorTheme)
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return {
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effects: selectedThemeConf.reconfigure(theme),
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}
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}
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const svgUrl = (content: string) =>
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`url('data:image/svg+xml,${encodeURIComponent(
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`<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40">${content}</svg>`
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)}')`
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export const lineHeights: Record<LineHeight, number> = {
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compact: 1.33,
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normal: 1.6,
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wide: 2,
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}
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const fontFamilies: Record<FontFamily, string[]> = {
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monaco: ['Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'monospace'],
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lucida: ['Lucida Console', 'Source Code Pro', 'monospace'],
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}
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const createThemeFromOptions = ({
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fontSize = 12,
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fontFamily = 'monaco',
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lineHeight = 'normal',
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overallTheme = '',
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}: Options) => {
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/**
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* Theme styles that depend on settings.
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*/
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return [
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EditorView.editorAttributes.of({
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class: overallTheme === '' ? 'overall-theme-dark' : 'overall-theme-light',
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style: Object.entries({
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'--font-size': `${fontSize}px`,
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'--source-font-family': fontFamilies[fontFamily]?.join(', '),
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'--line-height': lineHeights[lineHeight],
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})
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.map(([key, value]) => `${key}: ${value}`)
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.join(';'),
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}),
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// set variables for tooltips, which are outside the editor
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// TODO: set these on document.body, or a new container element for the tooltips, without using a style mod
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EditorView.theme({
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'.cm-tooltip': {
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'--font-size': `${fontSize}px`,
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'--source-font-family': fontFamilies[fontFamily]?.join(', '),
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'--line-height': lineHeights[lineHeight],
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},
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}),
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]
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}
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/**
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* Base styles that can have &dark and &light variants
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*/
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const baseTheme = EditorView.baseTheme({
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'.cm-content': {
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fontSize: 'var(--font-size)',
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fontFamily: 'var(--source-font-family)',
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lineHeight: 'var(--line-height)',
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},
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'.cm-cursor-primary': {
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fontSize: 'var(--font-size)',
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fontFamily: 'var(--source-font-family)',
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lineHeight: 'var(--line-height)',
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},
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'.cm-gutters': {
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fontSize: 'var(--font-size)',
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lineHeight: 'var(--line-height)',
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},
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'.cm-tooltip': {
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// NOTE: fontFamily is not set here, as most tooltips use the UI font
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fontSize: 'var(--font-size)',
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},
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'.cm-panel': {
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fontSize: 'var(--font-size)',
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},
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'.cm-foldGutter .cm-gutterElement > span': {
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height: 'calc(var(--font-size) * var(--line-height))',
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},
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'.cm-lineNumbers': {
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fontFamily: 'var(--source-font-family)',
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},
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// use a background color for lint error ranges
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'.cm-lintRange-error': {
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padding: 'var(--half-leading, 0) 0',
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background: 'rgba(255, 0, 0, 0.2)',
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// avoid highlighting nested error ranges
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'& .cm-lintRange-error': {
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background: 'none',
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},
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},
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'.cm-specialChar': {
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color: 'red',
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backgroundColor: 'rgba(255, 0, 0, 0.1)',
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},
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'.cm-widgetBuffer': {
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height: '1.3em',
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},
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'.cm-snippetFieldPosition': {
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display: 'inline-block',
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height: '1.3em',
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},
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// style the gutter fold button on hover
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'&dark .cm-foldGutter .cm-gutterElement > span:hover': {
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boxShadow: '0 1px 1px rgba(255, 255, 255, 0.2)',
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backgroundColor: 'rgba(255, 255, 255, 0.1)',
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},
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'&light .cm-foldGutter .cm-gutterElement > span:hover': {
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borderColor: 'rgba(0, 0, 0, 0.3)',
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boxShadow: '0 1px 1px rgba(255, 255, 255, 0.7)',
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backgroundColor: 'rgba(255, 255, 255, 0.2)',
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},
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})
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/**
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* Theme styles that don't depend on settings.
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*/
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// TODO: move some/all of these into baseTheme?
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const staticTheme = EditorView.theme({
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// make the editor fill the available height
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'&': {
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height: '100%',
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textRendering: 'optimizeSpeed',
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},
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// remove the outline from the focused editor
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'&.cm-editor.cm-focused:not(:focus-visible)': {
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outline: 'none',
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},
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// override default styles for the search panel
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'.cm-panel.cm-search label': {
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display: 'inline-flex',
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alignItems: 'center',
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fontWeight: 'normal',
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},
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'.cm-selectionLayer': {
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zIndex: -10,
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},
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// remove the right-hand border from the gutter
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// ensure the gutter doesn't shrink
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'.cm-gutters': {
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borderRight: 'none',
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flexShrink: 0,
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},
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// style the gutter fold button
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// TODO: add a class to this element for easier theming
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'.cm-foldGutter .cm-gutterElement > span': {
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border: '1px solid transparent',
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borderRadius: '3px',
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display: 'inline-flex',
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flexDirection: 'column',
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justifyContent: 'center',
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color: 'rgba(109, 109, 109, 0.7)',
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},
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// reduce the padding around line numbers
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'.cm-lineNumbers .cm-gutterElement': {
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padding: '0',
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userSelect: 'none',
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},
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// make cursor visible with reduced opacity when the editor is not focused
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'&:not(.cm-focused) > .cm-scroller > .cm-cursorLayer .cm-cursor': {
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display: 'block',
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opacity: 0.2,
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},
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// make the cursor wider, and use the themed color
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'.cm-cursor, .cm-dropCursor': {
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borderWidth: '2px',
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marginLeft: '-1px', // half the border width
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borderLeftColor: 'inherit',
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},
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// remove border from hover tooltips (e.g. cursor highlights)
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'.cm-tooltip-hover': {
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border: 'none',
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},
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// use the same style as Ace for snippet fields
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'.cm-snippetField': {
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background: 'rgba(194, 193, 208, 0.09)',
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border: '1px dotted rgba(211, 208, 235, 0.62)',
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},
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// style the fold placeholder
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'.cm-foldPlaceholder': {
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boxSizing: 'border-box',
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display: 'inline-block',
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height: '11px',
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width: '1.8em',
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marginTop: '-2px',
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verticalAlign: 'middle',
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backgroundImage:
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'url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAJCAYAAADU6McMAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAJpJREFUeNpi/P//PwOlgAXGYGRklAVSokD8GmjwY1wasKljQpYACtpCFeADcHVQfQyMQAwzwAZI3wJKvCLkfKBaMSClBlR7BOQikCFGQEErIH0VqkabiGCAqwUadAzZJRxQr/0gwiXIal8zQQPnNVTgJ1TdawL0T5gBIP1MUJNhBv2HKoQHHjqNrA4WO4zY0glyNKLT2KIfIMAAQsdgGiXvgnYAAAAASUVORK5CYII="),url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAA3CAYAAADNNiA5AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAACJJREFUeNpi+P//fxgTAwPDBxDxD078RSX+YeEyDFMCIMAAI3INmXiwf2YAAAAASUVORK5CYII=")',
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backgroundRepeat: 'no-repeat, repeat-x',
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backgroundPosition: 'center center, top left',
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color: 'transparent',
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border: '1px solid black',
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borderRadius: '2px',
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},
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// align the lint icons with the line numbers
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'.cm-gutter-lint .cm-gutterElement': {
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padding: '0.3em',
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},
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// reset the default style for the lint gutter error marker, which uses :before
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'.cm-lint-marker-error:before': {
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content: 'normal',
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},
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// set a new icon for the lint gutter error marker
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'.cm-lint-marker-error': {
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content: svgUrl(
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`<circle cx="20" cy="20" r="15" fill="#f87" stroke="#f43" stroke-width="6"/>`
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),
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},
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// set a new icon for the lint gutter warning marker
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'.cm-lint-marker-warning': {
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content: svgUrl(
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`<path fill="#FCC483" stroke="#DE8014" stroke-width="6" stroke-linejoin="round" d="M20 6L37 35L3 35Z"/>`
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),
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},
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})
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const themeCache = new Map<string, any>()
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const loadSelectedTheme = async (editorTheme: string) => {
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if (!editorTheme) {
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editorTheme = 'textmate' // use the default theme if unset
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}
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if (!themeCache.has(editorTheme)) {
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const { theme, highlightStyle, dark } = await import(
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/* webpackChunkName: "cm6-theme" */ `../themes/cm6/${editorTheme}.json`
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)
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const extension = [
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EditorView.theme(theme, { dark }),
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EditorView.theme(highlightStyle, { dark }),
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]
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themeCache.set(editorTheme, extension)
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}
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return themeCache.get(editorTheme)
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}
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