Add … when chars are truncated in picker

pull/375/head
Gokul Soumya 3 years ago committed by Blaž Hrastnik
parent 10548bf0e3
commit 18beda38ac

@ -289,7 +289,7 @@ impl<T: 'static> Component for Picker<T> {
surface.set_string(inner.x + 1, inner.y + 2 + i as u16, ">", selected);
}
surface.set_stringn(
surface.set_string_truncated(
inner.x + 3,
inner.y + 2 + i as u16,
(self.format_fn)(option),
@ -299,6 +299,7 @@ impl<T: 'static> Component for Picker<T> {
} else {
style
},
true,
);
}
}

@ -266,11 +266,30 @@ impl Buffer {
width: usize,
style: Style,
) -> (u16, u16)
where
S: AsRef<str>,
{
self.set_string_truncated(x, y, string, width, style, false)
}
/// Print at most the first `width` characters of a string if enough space is available
/// until the end of the line. If `markend` is true appends a `…` at the end of
/// truncated lines.
pub fn set_string_truncated<S>(
&mut self,
x: u16,
y: u16,
string: S,
width: usize,
style: Style,
ellipsis: bool,
) -> (u16, u16)
where
S: AsRef<str>,
{
let mut index = self.index_of(x, y);
let mut x_offset = x as usize;
let width = if ellipsis { width - 1 } else { width };
let graphemes = UnicodeSegmentation::graphemes(string.as_ref(), true);
let max_offset = min(self.area.right() as usize, width.saturating_add(x as usize));
for s in graphemes {
@ -293,6 +312,9 @@ impl Buffer {
index += width;
x_offset += width;
}
if ellipsis && x_offset - (x as usize) < string.as_ref().chars().count() {
self.content[index].set_symbol("…");
}
(x_offset as u16, y)
}

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