Added option to customize global padding (closes #22).

README.md

@@ -19,6 +19,8 @@ Options:
     -t, --time          display the current date and time
     -r, --remember      remember last logged-in username
         --asterisks     display asterisks when a secret is typed
+        --window-padding PADDING
+                        padding inside the terminal area (default: 0)
         --container-padding PADDING
                         padding inside the main prompt container (default: 1)
         --prompt-padding PADDING

src/config.rs

@@ -117,6 +117,16 @@ impl Greeter {
     80
   }
 
+  pub fn window_padding(&self) -> u16 {
+    if let Some(value) = self.option("window-padding") {
+      if let Ok(padding) = value.parse::<u16>() {
+        return padding;
+      }
+    }
+
+    0
+  }
+
   pub fn container_padding(&self) -> u16 {
     if let Some(value) = self.option("container-padding") {
       if let Ok(padding) = value.parse::<u16>() {
@@ -150,6 +160,7 @@ impl Greeter {
     opts.optflag("t", "time", "display the current date and time");
     opts.optflag("r", "remember", "remember last logged-in username");
     opts.optflag("", "asterisks", "display asterisks when a secret is typed");
+    opts.optopt("", "window-padding", "padding inside the terminal area (default: 0)", "PADDING");
     opts.optopt("", "container-padding", "padding inside the main prompt container (default: 1)", "PADDING");
     opts.optopt("", "prompt-padding", "padding between prompt rows (default: 1)", "PADDING");
 

src/ui/mod.rs

@@ -27,6 +27,11 @@ const CHANGE_COMMAND: &str = "Change command";
 const COMMAND: &str = "COMMAND";
 const CAPS_LOCK: &str = "CAPS LOCK";
 
+const TITLEBAR_INDEX: usize = 1;
+const STATUSBAR_INDEX: usize = 3;
+const STATUSBAR_LEFT_INDEX: usize = 1;
+const STATUSBAR_RIGHT_INDEX: usize = 2;
+
 pub fn draw(terminal: &mut Terminal<TermionBackend<RawTerminal<io::Stdout>>>, greeter: &mut Greeter) -> Result<(), Box<dyn Error>> {
   let hide_cursor = if greeter.working || greeter.mode == Mode::Sessions {
     terminal.hide_cursor()?;
@@ -40,9 +45,11 @@ pub fn draw(terminal: &mut Terminal<TermionBackend<RawTerminal<io::Stdout>>>, gr
     let chunks = Layout::default()
       .constraints(
         [
+          Constraint::Length(greeter.window_padding()), // Top vertical padding
           Constraint::Length(1),                        // Date and time
           Constraint::Min(1),                           // Main area
           Constraint::Length(1),                        // Status line
+          Constraint::Length(greeter.window_padding()), // Bottom vertical padding
         ]
         .as_ref(),
       )
@@ -52,13 +59,21 @@ pub fn draw(terminal: &mut Terminal<TermionBackend<RawTerminal<io::Stdout>>>, gr
       let time_text = Span::from(get_time());
       let time = Paragraph::new(time_text).alignment(Alignment::Center);
 
-      f.render_widget(time, chunks[0]);
+      f.render_widget(time, chunks[TITLEBAR_INDEX]);
     }
 
     let status_chunks = Layout::default()
       .direction(Direction::Horizontal)
-      .constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
-      .split(chunks[2]);
+      .constraints(
+        [
+          Constraint::Length(greeter.window_padding()),
+          Constraint::Percentage(50),
+          Constraint::Percentage(50),
+          Constraint::Length(greeter.window_padding()),
+        ]
+        .as_ref(),
+      )
+      .split(chunks[STATUSBAR_INDEX]);
 
     let command = greeter.command.clone().unwrap_or_else(|| "-".to_string());
     let status_left_text = Spans::from(vec![
@@ -73,13 +88,13 @@ pub fn draw(terminal: &mut Terminal<TermionBackend<RawTerminal<io::Stdout>>>, gr
     ]);
     let status_left = Paragraph::new(status_left_text);
 
-    f.render_widget(status_left, status_chunks[0]);
+    f.render_widget(status_left, status_chunks[STATUSBAR_LEFT_INDEX]);
 
     if capslock_status() {
       let status_right_text = status_label(format!(" {} ", CAPS_LOCK));
       let status_right = Paragraph::new(status_right_text).alignment(Alignment::Right);
 
-      f.render_widget(status_right, status_chunks[1]);
+      f.render_widget(status_right, status_chunks[STATUSBAR_RIGHT_INDEX]);
     }
 
     let cursor = match greeter.mode {