[rust] add example for issue #1832

rust/examples/issue-1832.rs

@@ -0,0 +1,39 @@
+//! https://github.com/dankamongmen/notcurses/issues/1832
+
+use libnotcurses_sys::*;
+
+const W: u32 = 32;
+const H: u32 = 32;
+
+fn main() -> NcResult<()> {
+    let mut nc = Nc::new()?;
+
+
+    // create a white rectangle visual for the background
+    let buffer1 = vec![255; H as usize * W as usize * 3];
+    let mut bg_plane = NcPlane::new(&mut nc, 0, 0, H, W)?;
+    let v = NcVisual::from_rgb_packed(buffer1.as_slice(), H, W * 3, W, 255)?;
+    let vo = NcVisualOptions::with_plane(&mut bg_plane, NCSCALE_NONE, 0, 0, 0, 0, 0, 0, NCBLIT_PIXEL, 0, 0);
+
+    // create a blue plane for the foreground
+    let mut fg_plane = NcPlane::new_bound(&mut bg_plane, 1, 1, 2, 16)?;
+    fg_plane.set_base(" ", 0, NcChannels::from_rgb(0x88aa00, 0x222288))?;
+
+    let mut counter = 0;
+    for _ in 0..4 {
+        fg_plane.putstr_yx(0,0, &format!["counter: {}", &counter]);
+        counter += 1;
+
+        v.render(nc, &vo)?;
+        bg_plane.render()?;
+        bg_plane.rasterize()?;
+        sleep![0, 500];
+    }
+
+
+    sleep![1];
+    v.destroy();
+    bg_plane.destroy();
+    nc.stop()?;
+    Ok(())
+}