mod(benchmark): correct size and provide documentation

src/layout/Pane.zig

@@ -31,12 +31,24 @@ pub fn Layout(comptime Event: type) type {
         }
 
         pub fn handle(this: *@This(), event: Event) !*Events {
-            switch (event) {
-                else => {},
-            }
             this.events.clearRetainingCapacity();
-            if (this.widget.handle(event)) |e| {
-                try this.events.append(e);
+            switch (event) {
+                .resize => |size| {
+                    const widget_event: Event = .{
+                        .resize = .{
+                            .cols = size.cols,
+                            .rows = size.rows -| 2, // remove top and bottom rows
+                        },
+                    };
+                    if (this.widget.handle(widget_event)) |e| {
+                        try this.events.append(e);
+                    }
+                },
+                else => {
+                    if (this.widget.handle(event)) |e| {
+                        try this.events.append(e);
+                    }
+                },
             }
             return &this.events;
         }
@@ -44,7 +56,9 @@ pub fn Layout(comptime Event: type) type {
         pub fn content(this: *@This()) !*std.ArrayList(u8) {
             const widget_content = try this.widget.content();
             this.c.clearRetainingCapacity();
+            try this.c.appendSlice("\n");
             try this.c.appendSlice(widget_content);
+            try this.c.appendSlice("\n");
             return &this.c;
         }
     };