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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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58
components/shared/profile/time.rs
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@ -90,43 +90,44 @@ pub enum ProfilerCategory {
ScriptEvent = 0x66,
ScriptFileRead = 0x67,
ScriptImageCacheMsg = 0x68,
ScriptInputEvent = 0x69,
ScriptNetworkEvent = 0x6a,
ScriptFontLoading = 0x68,
ScriptImageCacheMsg = 0x69,
ScriptInputEvent = 0x6a,
ScriptNetworkEvent = 0x6b,
/// The script thread is parsing HTML, rather than doing other work like evaluating scripts or doing layout.
ScriptParseHTML = 0x6b,
ScriptParseHTML = 0x6c,
ScriptPlannedNavigation = 0x6c,
ScriptResize = 0x6d,
ScriptRendering = 0x6e,
ScriptSetScrollState = 0x6f,
ScriptSetViewport = 0x70,
ScriptTimerEvent = 0x71,
ScriptStylesheetLoad = 0x72,
ScriptUpdateReplacedElement = 0x73,
ScriptWebSocketEvent = 0x74,
ScriptWorkerEvent = 0x75,
ScriptServiceWorkerEvent = 0x76,
ScriptPlannedNavigation = 0x6d,
ScriptResize = 0x6e,
ScriptRendering = 0x6f,
ScriptSetScrollState = 0x70,
ScriptSetViewport = 0x71,
ScriptTimerEvent = 0x72,
ScriptStylesheetLoad = 0x73,
ScriptUpdateReplacedElement = 0x74,
ScriptWebSocketEvent = 0x75,
ScriptWorkerEvent = 0x76,
ScriptServiceWorkerEvent = 0x77,
/// The script thread is parsing XML, rather than doing other work like evaluating scripts or doing layout.
ScriptParseXML = 0x77,
ScriptParseXML = 0x78,
ScriptEnterFullscreen = 0x78,
ScriptExitFullscreen = 0x79,
ScriptWorkletEvent = 0x7a,
ScriptPerformanceEvent = 0x7b,
ScriptHistoryEvent = 0x7c,
ScriptPortMessage = 0x7d,
ScriptWebGPUMsg = 0x7e,
ScriptEnterFullscreen = 0x79,
ScriptExitFullscreen = 0x7a,
ScriptWorkletEvent = 0x7b,
ScriptPerformanceEvent = 0x7c,
ScriptHistoryEvent = 0x7d,
ScriptPortMessage = 0x7e,
ScriptWebGPUMsg = 0x7f,
/// Web performance metrics.
TimeToFirstPaint = 0x80,
TimeToFirstContentfulPaint = 0x81,
TimeToInteractive = 0x82,
TimeToFirstPaint = 0x90,
TimeToFirstContentfulPaint = 0x91,
TimeToInteractive = 0x92,
IpcReceiver = 0x83,
IpcBytesReceiver = 0x84,
IpcReceiver = 0x93,
IpcBytesReceiver = 0x94,
}
impl ProfilerCategory {
@ -151,6 +152,7 @@ impl ProfilerCategory {
ProfilerCategory::ScriptEvaluate => "ScriptEvaluate",
ProfilerCategory::ScriptEvent => "ScriptEvent",
ProfilerCategory::ScriptFileRead => "ScriptFileRead",
ProfilerCategory::ScriptFontLoading => "ScriptFontLoading",
ProfilerCategory::ScriptImageCacheMsg => "ScriptImageCacheMsg",
ProfilerCategory::ScriptInputEvent => "ScriptInputEvent",
ProfilerCategory::ScriptNetworkEvent => "ScriptNetworkEvent",