1 files changed, 67 insertions, 0 deletions
diff --git a/src/render.rs b/src/render.rs
new file mode 100644
index 0000000..a0cb234
--- /dev/null
+++ b/src/render.rs
@@ -0,0 +1,67 @@
+use std::io;
+use ratatui::{
+    layout::{Constraint, Direction, Layout},
+    style::{Color, Style},
+    text::{Line, Span},
+    widgets::{Block, Borders, Paragraph},
+    Terminal,
+    prelude::Alignment,
+};
+
+pub fn draw(terminal: &mut Terminal<impl ratatui::backend::Backend>, data: &[u8], cursor: usize, filename: &str) -> io::Result<()> {
+    terminal.draw(|frame| {
+        let size = frame.size();
+        let layout = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([Constraint::Min(1), Constraint::Length(1)])
+            .split(size);
+
+        let lines: Vec<Line> = data.chunks(16).enumerate().map(|(i, chunk)| {
+            let addr = Span::raw(format!("{:08x} │ ", i * 16));
+            let mut hex: Vec<Span> = Vec::new();
+            let mut ascii_repr = String::new();
+
+            for (j, &byte) in chunk.iter().enumerate() {
+                let hex_str = format!("{:02x}", byte);
+                let index = i * 32 + j * 2;
+
+                for (k, ch) in hex_str.chars().enumerate() {
+                    let cur_idx = index + k;
+                    let style = if cur_idx == cursor {
+                        Style::default().bg(Color::White).fg(Color::Black)
+                    } else {
+                        Style::default()
+                    };
+                    hex.push(Span::styled(ch.to_string(), style));
+                }
+
+                if j < 15 {
+                    let space = if j % 4 == 3 { "   " } else { " " };
+                    hex.push(Span::raw(space));
+                }
+
+                ascii_repr.push(if byte.is_ascii_graphic() || byte == b' ' { byte as char } else { '.' });
+            }
+
+            let missing_bytes = 16 - chunk.len();
+            let padding = missing_bytes * 3;
+            let spaces = " ".repeat(padding);
+
+            let ascii = Span::raw(format!("{} │ {}", spaces, ascii_repr));
+
+            Line::from(vec![addr]
+                .into_iter()
+                .chain(hex)
+                .chain(std::iter::once(ascii))
+                .collect::<Vec<_>>())
+        }).collect();
+
+        frame.render_widget(Paragraph::new(lines).block(Block::default().borders(Borders::ALL)), layout[0]);
+
+        let progress = if data.is_empty() { 100 } else { (cursor / 2 * 100) / data.len() };
+        let status_text = format!("{} \t 0x{:08x} \t {:3}%", filename, cursor / 2, progress);
+        let status_bar = Paragraph::new(Line::from(Span::raw(status_text))).alignment(Alignment::Center);
+        frame.render_widget(status_bar, layout[1]);
+    })?;
+    Ok(())
+}