logiguard fork: GPUI xdg-activation keyboard-focus serial fix

Single-commit orphan branch: full zed-industries/zed @ 8c74db0 source tree
with a 3-file patch applied (no upstream history).

Patch (crates/gpui_linux/src/linux/wayland/):
  - serial.rs: add SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; add latest_serial_of()
  - window.rs: activate() uses keyboard-enter serial (Mutter focus gate)

Mutter honors window activation only when the token carries the keyboard-
focus serial from wl_keyboard.enter; GPUI used a stale mouse-press serial.
See docs/tray-window-focus-wayland.md in logiguard.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/gpui/examples/image/image.rs

@@ -0,0 +1,225 @@
+#![cfg_attr(target_family = "wasm", no_main)]
+
+use std::fs;
+use std::path::PathBuf;
+use std::sync::Arc;
+
+use anyhow::Result;
+use gpui::{
+    App, AppContext, AssetSource, Bounds, Context, ImageSource, KeyBinding, Menu, MenuItem, Point,
+    SharedString, SharedUri, TitlebarOptions, Window, WindowBounds, WindowOptions, actions, div,
+    img, prelude::*, px, rgb, size,
+};
+#[cfg(not(target_family = "wasm"))]
+use reqwest_client::ReqwestClient;
+
+struct Assets {
+    base: PathBuf,
+}
+
+impl AssetSource for Assets {
+    fn load(&self, path: &str) -> Result<Option<std::borrow::Cow<'static, [u8]>>> {
+        fs::read(self.base.join(path))
+            .map(|data| Some(std::borrow::Cow::Owned(data)))
+            .map_err(|e| e.into())
+    }
+
+    fn list(&self, path: &str) -> Result<Vec<SharedString>> {
+        fs::read_dir(self.base.join(path))
+            .map(|entries| {
+                entries
+                    .filter_map(|entry| {
+                        entry
+                            .ok()
+                            .and_then(|entry| entry.file_name().into_string().ok())
+                            .map(SharedString::from)
+                    })
+                    .collect()
+            })
+            .map_err(|e| e.into())
+    }
+}
+
+#[derive(IntoElement)]
+struct ImageContainer {
+    text: SharedString,
+    src: ImageSource,
+}
+
+impl ImageContainer {
+    pub fn new(text: impl Into<SharedString>, src: impl Into<ImageSource>) -> Self {
+        Self {
+            text: text.into(),
+            src: src.into(),
+        }
+    }
+}
+
+impl RenderOnce for ImageContainer {
+    fn render(self, _window: &mut Window, _: &mut App) -> impl IntoElement {
+        div().child(
+            div()
+                .flex_row()
+                .size_full()
+                .gap_4()
+                .child(self.text)
+                .child(img(self.src).size(px(256.0))),
+        )
+    }
+}
+
+struct ImageShowcase {
+    local_resource: Arc<std::path::Path>,
+    remote_resource: SharedUri,
+    asset_resource: SharedString,
+}
+
+impl Render for ImageShowcase {
+    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
+        div()
+            .id("main")
+            .bg(gpui::white())
+            .overflow_y_scroll()
+            .p_5()
+            .size_full()
+            .child(
+                div()
+                    .flex()
+                    .flex_col()
+                    .justify_center()
+                    .items_center()
+                    .gap_8()
+                    .child(img(
+                        "https://github.com/zed-industries/zed/actions/workflows/ci.yml/badge.svg",
+                    ))
+                    .child(
+                        div()
+                            .flex()
+                            .flex_row()
+                            .justify_center()
+                            .items_center()
+                            .gap_8()
+                            .child(ImageContainer::new(
+                                "Image loaded from a local file",
+                                self.local_resource.clone(),
+                            ))
+                            .child(ImageContainer::new(
+                                "Image loaded from a remote resource",
+                                self.remote_resource.clone(),
+                            ))
+                            .child(ImageContainer::new(
+                                "Image loaded from an asset",
+                                self.asset_resource.clone(),
+                            )),
+                    )
+                    .child(
+                        div()
+                            .flex()
+                            .flex_row()
+                            .gap_8()
+                            .child(
+                                div()
+                                    .flex_col()
+                                    .child("Auto Width")
+                                    .child(img("https://picsum.photos/800/400").h(px(180.))),
+                            )
+                            .child(
+                                div()
+                                    .flex_col()
+                                    .child("Auto Height")
+                                    .child(img("https://picsum.photos/800/400").w(px(180.))),
+                            ),
+                    )
+                    .child(
+                        div()
+                            .flex()
+                            .flex_col()
+                            .justify_center()
+                            .items_center()
+                            .w_full()
+                            .border_1()
+                            .border_color(rgb(0xC0C0C0))
+                            .child("image with max width 100%")
+                            .child(img("https://picsum.photos/800/400").max_w_full()),
+                    ),
+            )
+    }
+}
+
+actions!(image, [Quit]);
+
+fn run_example() {
+    let manifest_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+
+    #[cfg(not(target_family = "wasm"))]
+    let app = gpui_platform::application();
+    #[cfg(target_family = "wasm")]
+    let app = gpui_platform::application();
+    app.with_assets(Assets {
+        base: manifest_dir.join("examples"),
+    })
+    .run(move |cx: &mut App| {
+        #[cfg(not(target_family = "wasm"))]
+        {
+            let http_client = ReqwestClient::user_agent("gpui example").unwrap();
+            cx.set_http_client(Arc::new(http_client));
+        }
+        #[cfg(target_family = "wasm")]
+        {
+            // Safety: the web examples run single-threaded; the client is
+            // created and used exclusively on the main thread.
+            let http_client = unsafe {
+                gpui_web::FetchHttpClient::with_user_agent("gpui example")
+                    .expect("failed to create FetchHttpClient")
+            };
+            cx.set_http_client(Arc::new(http_client));
+        }
+
+        cx.activate(true);
+        cx.on_action(|_: &Quit, cx| cx.quit());
+        cx.bind_keys([KeyBinding::new("cmd-q", Quit, None)]);
+        cx.set_menus(vec![Menu {
+            name: "Image".into(),
+            items: vec![MenuItem::action("Quit", Quit)],
+            disabled: false,
+        }]);
+
+        let window_options = WindowOptions {
+            titlebar: Some(TitlebarOptions {
+                title: Some(SharedString::from("Image Example")),
+                appears_transparent: false,
+                ..Default::default()
+            }),
+
+            window_bounds: Some(WindowBounds::Windowed(Bounds {
+                size: size(px(1100.), px(600.)),
+                origin: Point::new(px(200.), px(200.)),
+            })),
+
+            ..Default::default()
+        };
+
+        cx.open_window(window_options, |_, cx| {
+            cx.new(|_| ImageShowcase {
+                // Relative path to your root project path
+                local_resource: manifest_dir.join("examples/image/app-icon.png").into(),
+                remote_resource: "https://picsum.photos/800/400".into(),
+                asset_resource: "image/color.svg".into(),
+            })
+        })
+        .unwrap();
+    });
+}
+
+#[cfg(not(target_family = "wasm"))]
+fn main() {
+    env_logger::init();
+    run_example();
+}
+
+#[cfg(target_family = "wasm")]
+#[wasm_bindgen::prelude::wasm_bindgen(start)]
+pub fn start() {
+    gpui_platform::web_init();
+    run_example();
+}