Commit cd8a90a2 authored by Jeremy Soller's avatar Jeremy Soller

Merge branch 'master' into 'master'

Add a HideCursor wrapper type acting like AlternateScreen

See merge request redox-os/termion!154
parents c04fd9dc 5301d862
//! Cursor movement.
use std::fmt;
use std::ops;
use std::io::{self, Write, Error, ErrorKind, Read};
use async::async_stdin_until;
use std::time::{SystemTime, Duration};
......@@ -174,3 +175,48 @@ impl<W: Write> DetectCursorPos for W {
Ok((cx, cy))
}
}
/// Hide the cursor for the lifetime of this struct.
/// It will hide the cursor on creation with from() and show it back on drop().
pub struct HideCursor<W: Write> {
/// The output target.
output: W,
}
impl<W: Write> HideCursor<W> {
/// Create a hide cursor wrapper struct for the provided output and hides the cursor.
pub fn from(mut output: W) -> Self {
write!(output, "{}", Hide).expect("hide the cursor");
HideCursor { output: output }
}
}
impl<W: Write> Drop for HideCursor<W> {
fn drop(&mut self) {
write!(self, "{}", Show).expect("show the cursor");
}
}
impl<W: Write> ops::Deref for HideCursor<W> {
type Target = W;
fn deref(&self) -> &W {
&self.output
}
}
impl<W: Write> ops::DerefMut for HideCursor<W> {
fn deref_mut(&mut self) -> &mut W {
&mut self.output
}
}
impl<W: Write> Write for HideCursor<W> {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
self.output.write(buf)
}
fn flush(&mut self) -> io::Result<()> {
self.output.flush()
}
}
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