[rust] add example issue-1559 #1559

rust/examples/issue-1559.rs

@@ -0,0 +1,35 @@
+//! https://github.com/dankamongmen/notcurses/issues/1559
+
+use libnotcurses_sys::*;
+
+const WIDTH: u32 = 10;
+const HEIGHT: u32 = 10;
+
+fn main() -> NcResult<()> {
+    let mut nc = Nc::new()?;
+
+    if !nc.check_pixel_support()? {
+        return Err(NcError::new_msg("Current terminal doesn't support pixels."));
+    }
+
+    let mut buffer = Vec::<u8>::with_capacity((HEIGHT * WIDTH * 4) as usize);
+    for _byte in (0..={ HEIGHT * WIDTH }) {
+        buffer.push(230);
+        buffer.push(30);
+        buffer.push(40);
+        buffer.push(255);
+    }
+
+    let vframe = NcVisual::from_rgba(buffer.as_slice(), HEIGHT, WIDTH * 4, WIDTH)?;
+    let voptions =
+        NcVisualOptions::without_plane(0, 0, 0, 0, HEIGHT, WIDTH, NCBLIT_PIXEL, 0, 0);
+
+    vframe.resize(1, 1)?; // it doesn't matter which values we put here 
+
+    // FIXME: render always gives an error
+    vframe.render(&mut nc, &voptions)?;
+
+    rsleep![&mut nc, 2];
+    vframe.destroy();
+    Ok(())
+}