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update doc for ncvisual_resize; fix #1559

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This commit is contained in:
joseLuís 2021-04-18 21:38:25 +02:00
parent d5b58d9f58
commit 0ec15fa920
3 changed files with 9 additions and 39 deletions
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6
include/notcurses/notcurses.h
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@ -2734,7 +2734,11 @@ API int ncvisual_rotate(struct ncvisual* n, double rads)
__attribute__ ((nonnull (1)));
// Scale the visual to 'rows' X 'columns' pixels, using the best scheme
// available. This is a lossy transformation, unless the size is unchanged.
// available.
//
// This is a lossy transformation, unless the size is unchanged.
//
// Returns -1 if the number of rows or columns is less than the current ones.
API int ncvisual_resize(struct ncvisual* n, int rows, int cols)
__attribute__ ((nonnull (1)));

37
rust/examples/issue-1559.rs
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@ -1,37 +0,0 @@
//! 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.inflate(1)?; // this works
vframe.resize(1, 1)?; // but 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(())
}

5
rust/src/visual/methods.rs
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@ -339,7 +339,10 @@ impl NcVisual {
]
}
/// Resizes the visual so that it is 'rows' X 'columns'.
/// Resizes the visual to `rows` X `olumns` pixels.
///
/// Returns an error if the number of either rows or columns is less than
/// the current ones.
///
/// This is a lossy transformation, unless the size is unchanged.
///