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constellation: Pass system theme to new Pipelines (#37132)

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Previously, when the theme was set it was only set on currently active
`Window`s. This change makes setting the `Theme` stateful. Now the
`Constellation` tracks what theme is applied to a `WebView` and properly
passes that value to new `Pipeline`s when they are constructed. In
addition, the value is passed to layout when that is constructed as
well.

Testing: this change adds a unit test.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-05-26 14:05:38 +02:00 • committed by GitHub
parent c96de69e80
commit d3e57a513c
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19 changed files with 201 additions and 74 deletions
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11
components/shared/embedder/lib.rs
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@ -34,6 +34,7 @@ use pixels::Image;
use serde::{Deserialize, Deserializer, Serialize, Serializer};
use servo_url::ServoUrl;
use strum_macros::IntoStaticStr;
use style::queries::values::PrefersColorScheme;
use style_traits::CSSPixel;
use url::Url;
use webrender_api::units::{DeviceIntPoint, DeviceIntRect, DeviceIntSize, DevicePixel};
@ -598,6 +599,16 @@ pub enum Theme {
/// Dark theme.
Dark,
}
impl From<Theme> for PrefersColorScheme {
fn from(value: Theme) -> Self {
match value {
Theme::Light => PrefersColorScheme::Light,
Theme::Dark => PrefersColorScheme::Dark,
}
}
}
// The type of MediaSession action.
/// <https://w3c.github.io/mediasession/#enumdef-mediasessionaction>
#[derive(Clone, Debug, Deserialize, Eq, Hash, MallocSizeOf, PartialEq, Serialize)]