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servoshell: Enable accesskit integration. (#37519)

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These changes ensure that our browser shell can integrate with
screenreaders. We do not provide any accessibility information about
webview content yet, which requires further API design work in both
Servo, accesskit, and egui.

Testing: No a11y-specific testing at this point; just verifying that
existing tests continue to pass.
Fixes: part of #4344

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews 2025-06-24 23:52:49 -04:00 • committed by GitHub
parent d114feb0fa
commit ef5784da0d
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GPG key ID: B5690EEEBB952194
9 changed files with 743 additions and 56 deletions
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26
ports/servoshell/desktop/egui_glue.rs
View file

@ -41,6 +41,10 @@ use egui_winit::winit;
use winit::event_loop::ActiveEventLoop;
use winit::window::Theme;
use super::events_loop::EventLoopProxy;
use super::headed_window::Window;
use super::window_trait::WindowPortsMethods;
/// Use [`egui`] from a [`glow`] app based on [`winit`].
pub struct EguiGlow {
pub egui_ctx: egui::Context,
@ -54,7 +58,9 @@ pub struct EguiGlow {
impl EguiGlow {
/// For automatic shader version detection set `shader_version` to `None`.
pub fn new(
window: &Window,
event_loop: &ActiveEventLoop,
event_loop_proxy: EventLoopProxy,
gl: std::sync::Arc<glow::Context>,
shader_version: Option<ShaderVersion>,
) -> Self {
@ -66,15 +72,19 @@ impl EguiGlow {
let theme = event_loop.system_theme().unwrap_or(Theme::Light);
let egui_ctx = egui::Context::default();
let mut egui_winit = egui_winit::State::new(
egui_ctx.clone(),
ViewportId::ROOT,
event_loop,
None,
Some(theme),
None,
);
let window = window.winit_window().unwrap();
egui_winit.init_accesskit(window, event_loop_proxy);
window.set_visible(true);
Self {
egui_winit: egui_winit::State::new(
egui_ctx.clone(),
ViewportId::ROOT,
event_loop,
None,
Some(theme),
None,
),
egui_winit,
egui_ctx,
painter,
shapes: Default::default(),