feat: add cli option and ctrl+u clears password

- Add `--hide-password` CLI flag
- Show temporary "CLEARED" feedback on password clear

Cargo.toml

@@ -43,8 +43,8 @@ default = ["networking"]
 networking = ["dep:reqwest", "tokio/net"]
 
 [profile.release]
-opt-level = "z"     # Optimize for size
-lto = true          # Enable Link Time Optimization
-codegen-units = 1   # Reduce parallel code gen to allow better size optimization
-panic = "abort"     # Remove heavy stack unwinding code
-strip = true        # Automatically strip symbols and debug info
+opt-level = "z"
+lto = true
+codegen-units = 1
+panic = "abort"
+strip = true

src/config.rs

@@ -6,13 +6,13 @@ use std::path::PathBuf;
 #[derive(Parser, Debug, Clone, Serialize, Deserialize)]
 #[command(author, version, about, long_about = None)]
 pub struct Config {
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "false", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue)]
     pub screenshots: bool,
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "false", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue)]
     pub clock: bool,
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "true", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue, default_value_t = true)]
     pub indicator: bool,
 
     #[arg(long, default_value = "100")]
@@ -54,7 +54,7 @@ pub struct Config {
     #[arg(long, default_value = "E5A445", value_parser = util::parse_hex_color)]
     pub caps_lock_text_color: (f64, f64, f64, f64),
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "true", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue, default_value_t = true)]
     pub show_caps_lock_text: bool,
 
     #[arg(long, default_value = "00000000", value_parser = util::parse_hex_color)]
@@ -85,22 +85,25 @@ pub struct Config {
     #[arg(long)]
     pub log_file: bool,
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "true", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue, default_value_t = true)]
     pub show_media: bool,
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "true", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue, default_value_t = true)]
     pub show_battery: bool,
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "true", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue, default_value_t = true)]
     pub show_network: bool,
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "true", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue, default_value_t = true)]
     pub show_bluetooth: bool,
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "true", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue, default_value_t = true)]
     pub show_album_art: bool,
 
-    #[arg(long, action = clap::ArgAction::Set, num_args = 0..=1, default_value = "false", default_missing_value = "true")]
+    #[arg(long, action = clap::ArgAction::SetTrue)]
+    pub hide_password: bool,
+
+    #[arg(long, action = clap::ArgAction::SetTrue)]
     pub show_keyboard_layout: bool,
 
     #[arg(long)]
@@ -203,6 +206,7 @@ impl Config {
                     merge_bool(&mut config.show_network, "show_network");
                     merge_bool(&mut config.show_bluetooth, "show_bluetooth");
                     merge_bool(&mut config.show_album_art, "show_album_art");
+                    merge_bool(&mut config.hide_password, "hide_password");
                     merge_bool(&mut config.show_keyboard_layout, "show_keyboard_layout");
 
                     if !is_cli("image") {

src/input.rs

@@ -30,6 +30,15 @@ impl InputHandler {
         // Update Caps Lock state
         self.caps_lock = modifiers.caps_lock;
 
+        if modifiers.ctrl && keysym == Keysym::u {
+            if !self.password_buffer.is_empty() {
+                self.password_buffer.clear();
+                self.cursor_position = 0;
+                return InputAction::PasswordCleared;
+            }
+            return InputAction::None;
+        }
+
         // Handle special keys first using keysym
         use smithay_client_toolkit::seat::keyboard::Keysym;
         match keysym {
@@ -37,6 +46,9 @@ impl InputHandler {
                 if !self.password_buffer.is_empty() && self.cursor_position > 0 {
                     self.cursor_position -= 1;
                     self.password_buffer.remove(self.cursor_position);
+                    if self.password_buffer.is_empty() {
+                        return InputAction::PasswordCleared;
+                    }
                 }
                 return InputAction::PasswordChanged;
             }
@@ -113,6 +125,7 @@ impl InputHandler {
 pub enum InputAction {
     None,
     PasswordChanged,
+    PasswordCleared,
     SubmitPassword(Zeroizing<String>),
     Cancel,
 }

src/lock.rs

@@ -174,6 +174,9 @@ impl LockedSurface {
                 self.input_handler.set_key_highlight();
                 self.key_highlight_shown = false;
             }
+            InputAction::PasswordCleared => {
+                self.renderer.show_cleared_feedback();
+            }
             InputAction::SubmitPassword(_) => {
                 self.input_handler.set_key_highlight();
                 self.key_highlight_shown = false;

src/render.rs

@@ -14,8 +14,10 @@ pub struct Renderer {
     fade_alpha: f64,
     wrong_password_shown: bool,
     key_highlight_shown: bool,
+    cleared_feedback_shown: bool,
     wrong_password_start: Option<Instant>,
     key_highlight_start: Option<Instant>,
+    cleared_feedback_start: Option<Instant>,
     key_highlight_angle: f64,
     background: Option<ImageSurface>,
     password_display: String,
@@ -51,8 +53,10 @@ impl Renderer {
             fade_alpha: 0.0,
             wrong_password_shown: false,
             key_highlight_shown: false,
+            cleared_feedback_shown: false,
             wrong_password_start: None,
             key_highlight_start: None,
+            cleared_feedback_start: None,
             key_highlight_angle: 0.0,
             background: None,
             password_display: String::new(),
@@ -183,6 +187,12 @@ impl Renderer {
         self.key_highlight_angle = ((random_val % 360) as f64).to_radians();
     }
 
+    /// Show cleared feedback
+    pub fn show_cleared_feedback(&mut self) {
+        self.cleared_feedback_shown = true;
+        self.cleared_feedback_start = Some(Instant::now());
+    }
+
     /// Set the password display string (masked)
     pub fn set_password_display(&mut self, password: String) {
         self.password_display = password;
@@ -250,6 +260,10 @@ impl Renderer {
             self.draw_key_highlight_feedback();
         }
 
+        if self.cleared_feedback_shown {
+            self.draw_cleared_feedback();
+        }
+
         self.update_feedback_timers();
     }
 
@@ -376,6 +390,9 @@ impl Renderer {
     }
 
     fn draw_password_display(&self) {
+        if self.config.hide_password {
+            return;
+        }
         let center_x = self.width as f64 / 2.0;
         let center_y = self.height as f64 / 2.0;
         let radius = self.config.indicator_radius as f64;
@@ -476,6 +493,56 @@ impl Renderer {
         }
     }
 
+    fn draw_cleared_feedback(&self) {
+        let center_x = self.width as f64 / 2.0;
+        let center_y = self.height as f64 / 2.0;
+        let radius = self.config.indicator_radius as f64;
+        let thickness = self.config.indicator_thickness as f64;
+        let intensity = if let Some(start) = self.cleared_feedback_start {
+            let elapsed = start.elapsed();
+            let duration = std::time::Duration::from_millis(500);
+            if elapsed < duration {
+                1.0 - (elapsed.as_secs_f64() / duration.as_secs_f64())
+            } else {
+                0.0
+            }
+        } else {
+            0.0
+        };
+
+        if intensity > 0.0 {
+            self.context.new_path();
+            self.context
+                .set_source_rgba(1.0, 0.0, 0.0, intensity * self.fade_alpha * 0.5);
+            self.context.arc(
+                center_x,
+                center_y,
+                radius - thickness / 2.0,
+                0.0,
+                2.0 * std::f64::consts::PI,
+            );
+            self.context.fill().unwrap();
+
+            self.context.new_path();
+            self.context
+                .set_source_rgba(1.0, 0.0, 0.0, intensity * self.fade_alpha);
+            self.context.set_line_width(thickness + 4.0);
+            self.context
+                .arc(center_x, center_y, radius, 0.0, 2.0 * std::f64::consts::PI);
+            self.context.stroke().unwrap();
+
+            self.context.new_path();
+            self.context.set_font_size(24.0);
+            self.context
+                .set_source_rgba(1.0, 1.0, 1.0, intensity * self.fade_alpha);
+            let text = "CLEARED";
+            let te = self.context.text_extents(text).unwrap();
+            self.context
+                .move_to(center_x - te.width() / 2.0, center_y + te.height() / 2.0);
+            self.context.show_text(text).unwrap();
+        }
+    }
+
     fn update_feedback_timers(&mut self) {
         self.update_uptime();
         if let Some(start) = self.wrong_password_start {
@@ -490,6 +557,12 @@ impl Renderer {
                 self.key_highlight_start = None;
             }
         }
+        if let Some(start) = self.cleared_feedback_start {
+            if start.elapsed() > std::time::Duration::from_millis(500) {
+                self.cleared_feedback_shown = false;
+                self.cleared_feedback_start = None;
+            }
+        }
     }
 
     fn draw_media(&mut self) {