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56840e0a35
This patch implements the `FontFace` interface, but with some caveats 1. The interface is only exposed on `Window`. Support for Workers will be handled in the future. 2. The concept of `css-connected` `FontFace` is not implemented, so `@font-face` rules in stylesheets will not be represented in the DOM. 3. The constructor only supports using `url()` strings as source and `ArrayBuffer` and `ArrayBufferView` are not supported yet. A skeleton implementation of the `load` method of `FontFaceSet` is also implemented in this patch. The intention is to support some web pages that don't load without this method. Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>
51 lines
1.8 KiB
Text
51 lines
1.8 KiB
Text
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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/*
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dictionary FontFaceSetLoadEventInit : EventInit {
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sequence<FontFace> fontfaces = [];
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};
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[Exposed=(Window,Worker)]
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interface FontFaceSetLoadEvent : Event {
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constructor(DOMString type, optional FontFaceSetLoadEventInit eventInitDict = {});
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// WebIDL needs to support FrozenArray & SameObject
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// [SameObject] readonly attribute FrozenArray<FontFace> fontfaces;
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readonly attribute any fontfaces;
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};
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enum FontFaceSetLoadStatus { "loading" , "loaded" };
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*/
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// https://drafts.csswg.org/css-font-loading/#FontFaceSet-interface
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[Exposed=(Window /*, Worker */)]
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interface FontFaceSet : EventTarget {
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// constructor(sequence<FontFace> initialFaces);
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// setlike<FontFace>;
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[Pref="dom_fontface_enabled"]
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FontFaceSet add(FontFace font);
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// boolean delete(FontFace font);
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// undefined clear();
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// events for when loading state changes
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// attribute EventHandler onloading;
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// attribute EventHandler onloadingdone;
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// attribute EventHandler onloadingerror;
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// check and start loads if appropriate
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// and fulfill promise when all loads complete
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[Pref="dom_fontface_enabled"]
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Promise<sequence<FontFace>> load(DOMString font, optional DOMString text = " ");
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// return whether all fonts in the fontlist are loaded
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// (does not initiate load if not available)
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// boolean check(DOMString font, optional DOMString text = " ");
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// async notification that font loading and layout operations are done
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readonly attribute Promise<FontFaceSet> ready;
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// loading state, "loading" while one or more fonts loading, "loaded" otherwise
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// readonly attribute FontFaceSetLoadStatus status;
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};
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