feat: support authorized input methods

compositor/src/handlers/input_method.rs

@@ -0,0 +1,61 @@
+use smithay::{
+    desktop::{PopupKind, WindowSurfaceType, layer_map_for_output},
+    reexports::wayland_server::protocol::wl_surface::WlSurface,
+    utils::{Logical, Rectangle},
+    wayland::input_method::{InputMethodHandler, PopupSurface},
+};
+
+use crate::Ferese;
+
+impl InputMethodHandler for Ferese {
+    fn new_popup(&mut self, surface: PopupSurface) {
+        if let Err(error) = self
+            .popups
+            .track_popup(PopupKind::InputMethod(surface.clone()))
+        {
+            tracing::warn!(?error, "failed to track input method popup");
+        }
+        crate::backends::direct::render_all(self);
+    }
+
+    fn dismiss_popup(&mut self, _surface: PopupSurface) {
+        self.popups.cleanup();
+        crate::backends::direct::render_all(self);
+    }
+
+    fn popup_repositioned(&mut self, _surface: PopupSurface) {
+        crate::backends::direct::render_all(self);
+    }
+
+    fn parent_geometry(&self, parent: &WlSurface) -> Rectangle<i32, Logical> {
+        if let Some(geometry) = self.space.elements().find_map(|window| {
+            window
+                .toplevel()
+                .is_some_and(|toplevel| toplevel.wl_surface() == parent)
+                .then(|| self.space.element_geometry(window))
+                .flatten()
+        }) {
+            return geometry;
+        }
+
+        let Some(layer) = self
+            .space
+            .layer_for_surface(parent, WindowSurfaceType::TOPLEVEL)
+        else {
+            return Rectangle::default();
+        };
+
+        self.space
+            .outputs()
+            .find_map(|output| {
+                let output_geometry = self.space.output_geometry(output)?;
+                let layer_geometry = layer_map_for_output(output).layer_geometry(&layer)?;
+
+                Some(Rectangle::new(
+                    output_geometry.loc + layer_geometry.loc,
+                    layer_geometry.size,
+                ))
+            })
+            .unwrap_or_default()
+    }
+}