Inline tui as helix-tui fork.

We only rely on some of the rendering primitives and implement our
Cursive-style compositor on top.

1 files changed, 25 insertions, 0 deletions

diff --git a/helix-tui/src/backend/mod.rs b/helix-tui/src/backend/mod.rs
new file mode 100644
index 00000000..ed125200
--- /dev/null
+++ b/helix-tui/src/backend/mod.rs
@@ -0,0 +1,25 @@
+use std::io;
+
+use crate::buffer::Cell;
+use crate::layout::Rect;
+
+#[cfg(feature = "crossterm")]
+mod crossterm;
+#[cfg(feature = "crossterm")]
+pub use self::crossterm::CrosstermBackend;
+
+mod test;
+pub use self::test::TestBackend;
+
+pub trait Backend {
+    fn draw<'a, I>(&mut self, content: I) -> Result<(), io::Error>
+    where
+        I: Iterator<Item = (u16, u16, &'a Cell)>;
+    fn hide_cursor(&mut self) -> Result<(), io::Error>;
+    fn show_cursor(&mut self) -> Result<(), io::Error>;
+    fn get_cursor(&mut self) -> Result<(u16, u16), io::Error>;
+    fn set_cursor(&mut self, x: u16, y: u16) -> Result<(), io::Error>;
+    fn clear(&mut self) -> Result<(), io::Error>;
+    fn size(&self) -> Result<Rect, io::Error>;
+    fn flush(&mut self) -> Result<(), io::Error>;
+}