65 lines
1.6 KiB
Rust
65 lines
1.6 KiB
Rust
use async_trait::async_trait;
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use crate::{AsyncWidget, Frame, Size, Widget};
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pub struct Layer<I1, I2> {
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bottom: I1,
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top: I2,
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}
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impl<I1, I2> Layer<I1, I2> {
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pub fn new(bottom: I1, top: I2) -> Self {
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Self { bottom, top }
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}
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fn size(bottom: Size, top: Size) -> Size {
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Size::new(bottom.width.max(top.width), bottom.height.max(top.height))
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}
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}
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impl<E, I1, I2> Widget<E> for Layer<I1, I2>
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where
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I1: Widget<E>,
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I2: Widget<E>,
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{
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fn size(
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&self,
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frame: &mut Frame,
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max_width: Option<u16>,
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max_height: Option<u16>,
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) -> Result<Size, E> {
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let bottom = self.bottom.size(frame, max_width, max_height)?;
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let top = self.top.size(frame, max_width, max_height)?;
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Ok(Self::size(bottom, top))
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}
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fn draw(self, frame: &mut Frame) -> Result<(), E> {
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self.bottom.draw(frame)?;
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self.top.draw(frame)?;
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Ok(())
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}
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}
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#[async_trait]
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impl<E, I1, I2> AsyncWidget<E> for Layer<I1, I2>
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where
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I1: AsyncWidget<E> + Send + Sync,
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I2: AsyncWidget<E> + Send + Sync,
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{
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async fn size(
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&self,
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frame: &mut Frame,
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max_width: Option<u16>,
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max_height: Option<u16>,
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) -> Result<Size, E> {
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let bottom = self.bottom.size(frame, max_width, max_height).await?;
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let top = self.top.size(frame, max_width, max_height).await?;
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Ok(Self::size(bottom, top))
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}
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async fn draw(self, frame: &mut Frame) -> Result<(), E> {
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self.bottom.draw(frame).await?;
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self.top.draw(frame).await?;
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Ok(())
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}
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}
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