mirror of
https://github.com/streetwriters/notesnook.git
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80 lines
2.4 KiB
TypeScript
80 lines
2.4 KiB
TypeScript
/*
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This file is part of the Notesnook project (https://notesnook.com/)
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Copyright (C) 2023 Streetwriters (Private) Limited
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import { FetchOptions } from "./fetch";
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import { inlineAll, shouldProcess } from "./inliner";
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async function resolveAll(options?: FetchOptions) {
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const fonts = readAll();
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const cssStrings: string[] = [];
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for (const font of fonts) {
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cssStrings.push(await font.resolve(options));
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}
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return cssStrings.join("\n");
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}
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function readAll() {
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const cssRules = getWebFonts(document.styleSheets);
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const fonts = selectWebFontRules(cssRules);
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return fonts.map(newWebFont);
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}
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function getWebFonts(styleSheets: StyleSheetList) {
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const cssRules: CSSFontFaceRule[] = [];
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for (const sheet of styleSheets) {
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try {
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const allFonts = selectWebFontRules(Array.from(sheet.cssRules));
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if (allFonts.length > 3) cssRules.push(allFonts[0]);
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} catch (e) {
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if (e instanceof Error) {
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console.log(
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"Error while reading CSS rules from " + sheet.href,
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e.toString()
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);
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}
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}
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}
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return cssRules;
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}
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function newWebFont(webFontRule: CSSFontFaceRule) {
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return {
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resolve: function resolve(options?: FetchOptions) {
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const baseUrl = (webFontRule.parentStyleSheet || {}).href || undefined;
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return inlineAll(webFontRule.cssText, options, baseUrl);
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},
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src: function () {
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return webFontRule.style.getPropertyValue("src");
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}
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};
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}
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function selectWebFontRules(cssRules: CSSRule[]): CSSFontFaceRule[] {
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return cssRules
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.filter(function (rule) {
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return rule.type === CSSRule.FONT_FACE_RULE;
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})
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.filter(function (rule) {
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return shouldProcess(
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(rule as CSSFontFaceRule).style.getPropertyValue("src")
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);
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}) as CSSFontFaceRule[];
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}
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export { resolveAll };
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