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-rw-r--r--helix-term/src/editor.rs54
1 files changed, 49 insertions, 5 deletions
diff --git a/helix-term/src/editor.rs b/helix-term/src/editor.rs
index 6c0d5b49..a6de3e0b 100644
--- a/helix-term/src/editor.rs
+++ b/helix-term/src/editor.rs
@@ -14,9 +14,17 @@ use std::io::{self, stdout, Write};
use std::path::PathBuf;
use std::time::Duration;
+use tui::backend::CrosstermBackend;
+use tui::buffer::Buffer as Surface;
+use tui::layout::Rect;
+use tui::style::Style;
+
+type Terminal = tui::Terminal<CrosstermBackend<std::io::Stdout>>;
+
static EX: smol::Executor = smol::Executor::new();
pub struct Editor {
+ terminal: Terminal,
state: Option<State>,
first_line: u16,
size: (u16, u16),
@@ -24,7 +32,12 @@ pub struct Editor {
impl Editor {
pub fn new(mut args: Args) -> Result<Self, Error> {
+ let backend = CrosstermBackend::new(stdout());
+
+ let mut terminal = Terminal::new(backend)?;
+
let mut editor = Editor {
+ terminal,
state: None,
first_line: 0,
size: terminal::size().unwrap(),
@@ -45,6 +58,9 @@ impl Editor {
fn render(&mut self) {
match &self.state {
Some(state) => {
+ let area = Rect::new(0, 0, self.size.0, self.size.1);
+ let mut surface = Surface::empty(area);
+
let lines = state
.doc
.lines_at(self.first_line as usize)
@@ -60,12 +76,33 @@ impl Editor {
cursor::MoveTo(0, n as u16),
Print((n + 1).to_string())
);
- execute!(
- stdout,
- SetForegroundColor(Color::Reset),
- cursor::MoveTo(2, n as u16),
- Print(line)
+
+ surface.set_string(2, n as u16, line, Style::default());
+ // execute!(
+ // stdout,
+ // SetForegroundColor(Color::Reset),
+ // cursor::MoveTo(2, n as u16),
+ // Print(line)
+ // );
+ }
+
+ // iterate over selections and render them
+ let select = Style::default().bg(tui::style::Color::LightBlue);
+ let text = state.doc.slice(..);
+ for range in state.selection.ranges() {
+ // get terminal coords for x,y for each range pos
+ // TODO: this won't work with multiline
+ let (y1, x1) = coords_at_pos(&text, range.from());
+ let (y2, x2) = coords_at_pos(&text, range.to());
+ let area = Rect::new(
+ (x1 + 2) as u16,
+ y1 as u16,
+ (x2 - x1 + 1) as u16,
+ (y2 - y1 + 1) as u16,
);
+ surface.set_style(area, select);
+
+ // TODO: don't highlight next char in append mode
}
let mode = match state.mode {
@@ -80,6 +117,13 @@ impl Editor {
Print(mode)
);
+ use tui::backend::Backend;
+ // TODO: double buffer and diff here
+ let empty = Surface::empty(area);
+ self.terminal
+ .backend_mut()
+ .draw(empty.diff(&surface).into_iter());
+
// set cursor shape
match state.mode {
Mode::Insert => write!(stdout, "\x1B[6 q"),