fix: Cache text metrics for terminal IME bounds to prevent blocking during composition

src/main.rs

@@ -2792,19 +2792,20 @@ impl Ashell {
         &self,
         range_utf16: Range<usize>,
         element_bounds: Bounds<Pixels>,
-        window: &Window,
+        cell_width: f32,
+        line_height: f32,
     ) -> Option<Bounds<Pixels>> {
         let snapshot = self.active_snapshot()?;
         let cursor = snapshot.cursor?;
         let x = element_bounds.origin.x
-            + px(self.terminal_cell_width(window)) * cursor.col as f32
-            + px(self.terminal_cell_width(window)) * range_utf16.start as f32;
-        let y = element_bounds.origin.y + px(self.terminal_line_height()) * cursor.row as f32;
+            + px(cell_width) * cursor.col as f32
+            + px(cell_width) * range_utf16.start as f32;
+        let y = element_bounds.origin.y + px(line_height) * cursor.row as f32;
         Some(Bounds::new(
             point(x, y),
             size(
-                px(self.terminal_cell_width(window)),
-                px(self.terminal_line_height()),
+                px(cell_width),
+                px(line_height),
             ),
         ))
     }

src/terminal_element.rs

@@ -144,6 +144,8 @@ pub struct PrepaintState {
 struct TerminalInputHandler {
     view: Entity<Ashell>,
     element_bounds: Bounds<Pixels>,
+    cell_width: f32,
+    line_height: f32,
 }
 
 impl InputHandler for TerminalInputHandler {
@@ -219,7 +221,7 @@ impl InputHandler for TerminalInputHandler {
     ) -> Option<Bounds<Pixels>> {
         self.view
             .read(cx)
-            .terminal_ime_bounds_for_range(range_utf16, self.element_bounds, _window)
+            .terminal_ime_bounds_for_range(range_utf16, self.element_bounds, self.cell_width, self.line_height)
     }
 
     fn character_index_for_point(
@@ -492,6 +494,8 @@ impl Element for TerminalElement {
             TerminalInputHandler {
                 view: self.view.clone(),
                 element_bounds: prepaint.bounds,
+                cell_width: prepaint.metrics.cell_width.as_f32(),
+                line_height: prepaint.metrics.line_height.as_f32(),
             },
             cx,
         );