49 lines
1.4 KiB
Rust
49 lines
1.4 KiB
Rust
use async_trait::async_trait;
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use toss::frame::{Frame, Pos, Size};
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use super::{BoxedWidget, Widget};
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pub struct Border(BoxedWidget);
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impl Border {
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pub fn new<W: Into<BoxedWidget>>(inner: W) -> Self {
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Self(inner.into())
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}
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}
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#[async_trait]
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impl Widget for Border {
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fn size(&self, frame: &mut Frame, max_width: Option<u16>, max_height: Option<u16>) -> Size {
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let max_width = max_width.map(|w| w.saturating_sub(2));
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let max_height = max_height.map(|h| h.saturating_sub(2));
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let size = self.0.size(frame, max_width, max_height);
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size + Size::new(2, 2)
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}
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async fn render(self: Box<Self>, frame: &mut Frame) {
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let mut size = frame.size();
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size.width = size.width.max(2);
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size.height = size.height.max(2);
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let right = size.width as i32 - 1;
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let bottom = size.height as i32 - 1;
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frame.write(Pos::new(0, 0), "┌");
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frame.write(Pos::new(right, 0), "┐");
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frame.write(Pos::new(0, bottom), "└");
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frame.write(Pos::new(right, bottom), "┘");
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for y in 1..bottom {
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frame.write(Pos::new(0, y), "│");
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frame.write(Pos::new(right, y), "│");
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}
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for x in 1..right {
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frame.write(Pos::new(x, 0), "─");
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frame.write(Pos::new(x, bottom), "─");
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}
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frame.push(Pos::new(1, 1), size - Size::new(2, 2));
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self.0.render(frame).await;
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frame.pop();
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}
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}
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