only show cursor percentage indicator when file is larger than height

This modifies the display function in normal mode without changing the
logic to gather the percentage, and should make the statusline a bit
cleaner on small files.

src/presenters/modes/normal.rs

@@ -10,10 +10,13 @@ use git2::Repository;
 use crate::view::{Colors, StatusLineData, Style, View};
 
 pub fn display(workspace: &mut Workspace, view: &mut View, repo: &Option<Repository>) -> Result<()> {
+    let height = view.height();
     let mut presenter = view.build_presenter()?;
     let buffer_status = current_buffer_status_line_data(workspace);
 
     if let Some(buf) = workspace.current_buffer() {
+        let line_count = buf.line_count();
+
         // Draw the visible set of tokens to the terminal.
         let data = buf.data();
         presenter.print_buffer(buf, &data, None, None)?;
@@ -25,6 +28,15 @@ pub fn display(workspace: &mut Workspace, view: &mut View, repo: &Option<Reposit
             Colors::Inverted
         };
 
+        let mut right_widgets = vec![
+            git_status_line_data(&repo, &buf.path),
+            percentage_cursor_indicator_line_data(workspace),
+        ];
+
+        if line_count <= height {
+            right_widgets.pop();
+        }
+
         // Build the status line mode and buffer title display.
         presenter.print_status_line(
             &[
@@ -35,10 +47,7 @@ pub fn display(workspace: &mut Workspace, view: &mut View, repo: &Option<Reposit
                 },
                 buffer_status,
             ],
-            &[
-                git_status_line_data(&repo, &buf.path),
-                percentage_cursor_indicator_line_data(workspace),
-            ],
+            &right_widgets,
         );
 
         presenter.present();

src/view/mod.rs

@@ -70,6 +70,10 @@ impl View {
         Presenter::new(self)
     }
 
+    pub fn height(&self) -> usize {
+        self.terminal.height()
+    }
+
     ///
     /// Scrollable region delegation methods.
     ///