comments

src/app.rs

@@ -5,10 +5,11 @@ use terminput::KeyCode;
 use crate::Demo;
 
 pub(crate) struct MyApp {
+    // Put in any variables here 
     counter: usize, 
     frame_counter: usize,
 }
-
+// Implement the [`crate::Demo`] trait to outline the behaviour
 impl Demo for MyApp {
     fn new() -> Self {
         Self { 
@@ -18,20 +19,30 @@ impl Demo for MyApp {
     }
 
     async fn frame(&mut self, term: &mut crate::Term) -> Result<(), String> {
+        // This example draws two moving sine waves on the screen. 
+        // Put in your behaviour here
+
+        // Draw function
         term.draw(|fr| {
             self.frame_counter = self.frame_counter.wrapping_add(1);
-            let style = Style::new().light_yellow().on_black(); 
 
+            // Color and the draw area 
+            let style = Style::new().light_yellow().on_black(); 
+            let area = fr.area(); 
+
+            // Create a block with title and credits 
             let block = Block::bordered()
                 .style(style)
-                .title("Example demo")
-                .title_bottom("Sine - made by: wilkuu (Jakub Stachurski), jakub@snt.utwente.nl");
+                .title("Example demo: Sine")
+                .title_bottom("By: wilkuu (Jakub Stachurski), jakub@snt.utwente.nl");
 
-            let area = fr.area(); 
+            // Area inside of the block
             let barea = block.inner(area);
             
+            // Draw the block
             fr.render_widget(block, area);
 
+            // Demo drawing logic replace with own stuff 
             let xl = barea.x; 
             let xr = barea.width + barea.x;
 
@@ -54,6 +65,7 @@ impl Demo for MyApp {
                     * Into::<f64>::into(barea.height / 2-1) + Into::<f64>::into(barea.y)).round() as u16; 
 
                if y2 == y1 {
+                   // Individual character drawing, there is probably a better way to achieve this.
                    buf.set_span(x, (y1.saturating_sub(1)).max(barea.y), &Span::from("_").light_magenta(), 1);  
                    buf.set_span(x, y1, &Span::from("#").light_magenta(), 1);  
                    buf.set_span(x, (y1.saturating_add(1)).min(yt), &Span::from("-").light_magenta(), 1);  
@@ -68,6 +80,7 @@ impl Demo for MyApp {
                }
             }
             
+            // Center text 
             let mut lines: Vec<Line>= Vec::new(); 
             lines.push("Use W/S to change the counter. Enter to exit.".into());
             lines.push(format!("Counter: {}", self.counter).into());
@@ -75,13 +88,13 @@ impl Demo for MyApp {
             let text = Paragraph::new(lines).centered().style(style);
             
             fr.render_widget(text, Rect::new(barea.width/2 - 25, barea.height/2, 50, 4));
-            
         }).map_err(|e| e.to_string())?;
 
         Ok(())
     }
 
     async fn input(&mut self, event: terminput::Event) -> Result<(), String> {
+        // Handle input using terminput.
         if let terminput::Event::Key(kv) = event {
             match kv.code {
                KeyCode::Char('w') => {