Remove native screen reader support (#2669)

* Remove native screen reader support

Use the "accesskit" feature flag to `eframe` instead.
[AccessKit](https://github.com/AccessKit/accesskit) is the future.

`tts` was a mess to compile on many platforms, so I no longer want
the native `tts` dependency.

* Update tts to 0.25

* Update changelogs

* Turn on all feature flags for package.metadata.docs.rs

* remove tts from deny.toml skip-tree

* Update web build scripts

* Update deny.toml

crates/egui-winit/CHANGELOG.md

@@ -3,6 +3,7 @@ All notable changes to the `egui-winit` integration will be noted in this file.
 
 
 ## Unreleased
+* Remove the `screen_reader` feature. Use the `accesskit` feature flag instead ([#2669](https://github.com/emilk/egui/pull/2669)).
 
 
 ## 0.20.1 - 2022-12-11

crates/egui-winit/Cargo.toml

@@ -14,8 +14,7 @@ keywords = ["winit", "egui", "gui", "gamedev"]
 include = ["../LICENSE-APACHE", "../LICENSE-MIT", "**/*.rs", "Cargo.toml"]
 
 [package.metadata.docs.rs]
-# Avoid speech-dispatcher dependencies - see https://docs.rs/crate/egui-winit/0.20.0/builds/695196
-features = ["document-features"]
+all-features = true
 
 
 [features]
@@ -37,9 +36,6 @@ links = ["webbrowser"]
 ## Enable profiling with the [`puffin`](https://docs.rs/puffin) crate.
 puffin = ["dep:puffin"]
 
-## Experimental support for a screen reader.
-screen_reader = ["tts"]
-
 ## Allow serialization of [`WindowSettings`] using [`serde`](https://docs.rs/serde).
 serde = ["egui/serde", "dep:serde"]
 
@@ -67,9 +63,6 @@ accesskit_winit = { version = "0.8.1", optional = true }
 puffin = { version = "0.14", optional = true }
 serde = { version = "1.0", optional = true, features = ["derive"] }
 
-# feature screen_reader
-tts = { version = "0.24", optional = true }
-
 webbrowser = { version = "0.8.3", optional = true }
 
 [target.'cfg(any(target_os="linux", target_os="dragonfly", target_os="freebsd", target_os="netbsd", target_os="openbsd"))'.dependencies]

crates/egui-winit/src/lib.rs

@@ -19,7 +19,6 @@ use egui::accesskit;
 pub use winit;
 
 pub mod clipboard;
-pub mod screen_reader;
 mod window_settings;
 
 pub use window_settings::WindowSettings;
@@ -75,7 +74,6 @@ pub struct State {
     current_pixels_per_point: f32,
 
     clipboard: clipboard::Clipboard,
-    screen_reader: screen_reader::ScreenReader,
 
     /// If `true`, mouse inputs will be treated as touches.
     /// Useful for debugging touch support in egui.
@@ -115,7 +113,6 @@ impl State {
             current_pixels_per_point: 1.0,
 
             clipboard: clipboard::Clipboard::new(wayland_display),
-            screen_reader: screen_reader::ScreenReader::default(),
 
             simulate_touch_screen: false,
             pointer_touch_id: None,
@@ -615,11 +612,6 @@ impl State {
         egui_ctx: &egui::Context,
         platform_output: egui::PlatformOutput,
     ) {
-        if egui_ctx.options(|o| o.screen_reader) {
-            self.screen_reader
-                .speak(&platform_output.events_description());
-        }
-
         let egui::PlatformOutput {
             cursor_icon,
             open_url,

crates/egui-winit/src/screen_reader.rs

@@ -1,49 +0,0 @@
-pub struct ScreenReader {
-    #[cfg(feature = "tts")]
-    tts: Option<tts::Tts>,
-}
-
-#[cfg(not(feature = "tts"))]
-#[allow(clippy::derivable_impls)] // False positive
-impl Default for ScreenReader {
-    fn default() -> Self {
-        Self {}
-    }
-}
-
-#[cfg(feature = "tts")]
-impl Default for ScreenReader {
-    fn default() -> Self {
-        let tts = match tts::Tts::default() {
-            Ok(screen_reader) => {
-                tracing::debug!("Initialized screen reader.");
-                Some(screen_reader)
-            }
-            Err(err) => {
-                tracing::warn!("Failed to load screen reader: {}", err);
-                None
-            }
-        };
-        Self { tts }
-    }
-}
-
-impl ScreenReader {
-    #[cfg(not(feature = "tts"))]
-    #[allow(clippy::unused_self)]
-    pub fn speak(&mut self, _text: &str) {}
-
-    #[cfg(feature = "tts")]
-    pub fn speak(&mut self, text: &str) {
-        if text.is_empty() {
-            return;
-        }
-        if let Some(tts) = &mut self.tts {
-            tracing::debug!("Speaking: {:?}", text);
-            let interrupt = true;
-            if let Err(err) = tts.speak(text, interrupt) {
-                tracing::warn!("Failed to read: {}", err);
-            }
-        }
-    }
-}