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script: add skeleton implementation of FontFace API (#35262)

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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>
This commit is contained in:
Mukilan Thiyagarajan 2025-02-19 11:20:01 +05:30 • committed by GitHub
parent 29e0fad21e
commit 56840e0a35
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52 changed files with 1160 additions and 551 deletions
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3
components/script/script_runtime.rs
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@ -104,6 +104,7 @@ pub(crate) enum ScriptThreadEventCategory {
DevtoolsMsg,
DocumentEvent,
FileRead,
FontLoading,
FormPlannedNavigation,
HistoryEvent,
ImageCacheMsg,
@ -139,6 +140,7 @@ impl From<ScriptThreadEventCategory> for ProfilerCategory {
ScriptThreadEventCategory::EnterFullscreen => ProfilerCategory::ScriptEnterFullscreen,
ScriptThreadEventCategory::ExitFullscreen => ProfilerCategory::ScriptExitFullscreen,
ScriptThreadEventCategory::FileRead => ProfilerCategory::ScriptFileRead,
ScriptThreadEventCategory::FontLoading => ProfilerCategory::ScriptFontLoading,
ScriptThreadEventCategory::FormPlannedNavigation => {
ProfilerCategory::ScriptPlannedNavigation
},
@ -181,6 +183,7 @@ impl From<ScriptThreadEventCategory> for ScriptHangAnnotation {
ScriptThreadEventCategory::DocumentEvent => ScriptHangAnnotation::DocumentEvent,
ScriptThreadEventCategory::InputEvent => ScriptHangAnnotation::InputEvent,
ScriptThreadEventCategory::FileRead => ScriptHangAnnotation::FileRead,
ScriptThreadEventCategory::FontLoading => ScriptHangAnnotation::FontLoading,
ScriptThreadEventCategory::FormPlannedNavigation => {
ScriptHangAnnotation::FormPlannedNavigation
},