Print bell character

CHANGELOG.md

@@ -13,6 +13,9 @@ Procedure when bumping the version number:
 
 ## Unreleased
 
+### Added
+- `Frame::set_bell` to print a bell character when the frame is displayed
+
 ## v0.3.3 - 2025-02-28
 
 ### Fixed

src/frame.rs

@@ -8,6 +8,7 @@ pub struct Frame {
     pub(crate) widthdb: WidthDb,
     pub(crate) buffer: Buffer,
     pub(crate) title: Option<String>,
+    pub(crate) bell: bool,
 }
 
 impl Frame {
@@ -48,6 +49,10 @@ impl Frame {
         self.title = title;
     }
 
+    pub fn set_bell(&mut self, bell: bool) {
+        self.bell = bell;
+    }
+
     pub fn widthdb(&mut self) -> &mut WidthDb {
         &mut self.widthdb
     }

src/terminal.rs

@@ -8,7 +8,7 @@ use crossterm::event::{
     DisableBracketedPaste, EnableBracketedPaste, KeyboardEnhancementFlags,
     PopKeyboardEnhancementFlags, PushKeyboardEnhancementFlags,
 };
-use crossterm::style::{PrintStyledContent, StyledContent};
+use crossterm::style::{Print, PrintStyledContent, StyledContent};
 use crossterm::terminal::{
     BeginSynchronizedUpdate, Clear, ClearType, EndSynchronizedUpdate, EnterAlternateScreen,
     LeaveAlternateScreen, SetTitle,
@@ -274,6 +274,7 @@ impl Terminal {
         self.draw_differences()?;
         self.update_cursor()?;
         self.update_title()?;
+        self.ring_bell()?;
 
         Ok(())
     }
@@ -315,4 +316,12 @@ impl Terminal {
         }
         Ok(())
     }
+
+    fn ring_bell(&mut self) -> io::Result<()> {
+        if self.frame.bell {
+            self.out.queue(Print('\x07'))?;
+        }
+        self.frame.bell = false;
+        Ok(())
+    }
 }