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Diffstat (limited to 'render1.rs')
| -rw-r--r-- | render1.rs | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/render1.rs b/render1.rs new file mode 100644 index 0000000..3f92c20 --- /dev/null +++ b/render1.rs @@ -0,0 +1,117 @@ +use std::io; +use ratatui::{ + layout::{Constraint, Direction, Layout}, + style::{Color, Style}, + text::{Line, Span}, + widgets::{ + Block, Borders, Paragraph, ScrollbarState, Scrollbar, ScrollbarOrientation, + }, + Terminal, + prelude::Alignment, + symbols, +}; + +pub fn draw( + terminal: &mut Terminal<impl ratatui::backend::Backend>, + data: &[u8], + cursor: usize, + filename: &str, + scrollbar_state: &mut ScrollbarState, +) -> 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); + + // Исправление: Устанавливаем длину содержимого скролла + let content_length = data.len() * 2; // 2 символа на байт + scrollbar_state.content_length(content_length); + + let visible_lines = layout[0].height as usize; + scrollbar_state.viewport_content_length(visible_lines); + + 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 byte_index = i * 16 + j; // Индекс байта в данных + let cursor_byte = cursor / 2; // Байт, на котором находится курсор + + for (k, ch) in hex_str.chars().enumerate() { + let cur_idx = byte_index * 2 + k; // Индекс символа в hex-строке + 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] + ); + + frame.render_stateful_widget( + Scrollbar::default() + .orientation(ScrollbarOrientation::VerticalRight) + .symbols(symbols::scrollbar::VERTICAL), + layout[0], + scrollbar_state, + ); + + // Исправление: Корректное вычисление прогресса + let progress = if data.is_empty() { + 100 + } else { + let cursor_byte = cursor / 2; + (cursor_byte * 100).saturating_div(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(()) +}
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