FPS counter added

client/src/ui/handlers/render.rs

@@ -39,6 +39,7 @@ pub fn render_ui(
     command_input: &str,
     command_mode: bool,
     command_message: &str,
+    current_fps: f64,
     app_state: &AppState,
 ) {
     render_background(f, f.area(), theme);
@@ -175,6 +176,6 @@ pub fn render_ui(
             render_buffer_list(f, area, theme, buffer_state);
         }
     }
-    render_status_line(f, status_line_area, current_dir, theme, is_edit_mode);
+    render_status_line(f, status_line_area, current_dir, theme, is_edit_mode, current_fps);
     render_command_line(f, command_line_area, command_input, command_mode, theme, command_message);
 }

client/src/ui/handlers/ui.rs

@@ -20,6 +20,7 @@ use crate::state::app::state::AppState;
  // Import SaveOutcome
 use crate::tui::terminal::{EventReader, TerminalCore};
 use crate::ui::handlers::render::render_ui;
+use std::time::Instant;
 use crossterm::cursor::SetCursorStyle;
 
 pub async fn run_ui() -> Result<(), Box<dyn std::error::Error>> {
@@ -51,6 +52,10 @@ pub async fn run_ui() -> Result<(), Box<dyn std::error::Error>> {
         .await?;
     form_state.reset_to_empty();
 
+    // --- FPS Calculation State ---
+    let mut last_frame_time = Instant::now();
+    let mut current_fps = 0.0;
+
     loop {
         // Determine edit mode based on EventHandler state
         let is_edit_mode = event_handler.is_edit_mode;
@@ -92,6 +97,7 @@ pub async fn run_ui() -> Result<(), Box<dyn std::error::Error>> {
                 &event_handler.command_input,
                 event_handler.command_mode,
                 &event_handler.command_message,
+                current_fps,
                 &app_state,
             );
         })?;
@@ -302,6 +308,14 @@ pub async fn run_ui() -> Result<(), Box<dyn std::error::Error>> {
             // terminal.cleanup()?; // Optional: Drop handles this
             return Ok(());
         }
+
+        // --- FPS Calculation ---
+        let now = Instant::now();
+        let frame_duration = now.duration_since(last_frame_time);
+        last_frame_time = now;
+        if frame_duration.as_secs_f64() > 1e-6 {
+            current_fps = 1.0 / frame_duration.as_secs_f64();
+        }
     }
 }