overlays: handle resize better

We need to actually tell them that the pane has been resized
so now we do.

docs/changelog.md

@@ -49,6 +49,7 @@ As features stabilize some brief notes about them will accumulate here.
 * Unix: Clicking a URL when no browser is open could cause wezterm to hang until the newly opened browser is closed. [#2245](https://github.com/wez/wezterm/issues/2245)
 * Quickselect: now selects the bottom-most match rather than the top-most match. [#2250](https://github.com/wez/wezterm/issues/2250)
 * Mux: `wezterm.mux.set_active_workspace` didn't update the current window to match the newly activated workspace. [#2248](https://github.com/wez/wezterm/issues/2248)
+* Overlays such as debug and launcher menu now handle resize better
 
 #### Updated
 * Bundled harfbuzz to 4.4.1

wezterm-gui/src/termwindow/mod.rs

@@ -2672,6 +2672,35 @@ impl TermWindow {
         })
     }
 
+    /// Resize overlays to match their corresponding tab/pane dimensions
+    pub fn resize_overlays(&self) {
+        let mux = Mux::get().unwrap();
+        for (_, state) in self.tab_state.borrow().iter() {
+            if let Some(overlay) = state.overlay.as_ref().map(|o| &o.pane) {
+                overlay.resize(self.terminal_size).ok();
+            }
+        }
+        for (pane_id, state) in self.pane_state.borrow().iter() {
+            if let Some(overlay) = state.overlay.as_ref().map(|o| &o.pane) {
+                if let Some(pane) = mux.get_pane(*pane_id) {
+                    let dims = pane.get_dimensions();
+                    overlay
+                        .resize(TerminalSize {
+                            cols: dims.cols,
+                            rows: dims.viewport_rows,
+                            dpi: self.terminal_size.dpi,
+                            pixel_height: (self.terminal_size.pixel_height
+                                / self.terminal_size.rows)
+                                * dims.viewport_rows,
+                            pixel_width: (self.terminal_size.pixel_width / self.terminal_size.cols)
+                                * dims.cols,
+                        })
+                        .ok();
+                }
+            }
+        }
+    }
+
     pub fn get_viewport(&self, pane_id: PaneId) -> Option<StableRowIndex> {
         self.pane_state(pane_id).viewport
     }

wezterm-gui/src/termwindow/resize.rs

@@ -260,6 +260,7 @@ impl super::TermWindow {
                 tab.resize(size);
             }
         };
+        self.resize_overlays();
         self.invalidate_fancy_tab_bar();
         self.update_title();