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use std::fmt::{self, Debug, Formatter};
use std::rc::Rc;
use fontdock::{FallbackTree, FontVariant};
use super::*;
use crate::shaping;
/// A text node.
#[derive(Clone, PartialEq)]
pub struct Text {
/// The text.
pub text: String,
/// The font size.
pub font_size: Length,
/// The text direction.
pub dir: Dir,
/// The families used for font fallback.
pub families: Rc<FallbackTree>,
/// The font variant,
pub variant: FontVariant,
/// How to align this text node in its parent.
pub aligns: Gen<Align>,
}
#[async_trait(?Send)]
impl Layout for Text {
async fn layout(&self, ctx: &mut LayoutContext, _: &Areas) -> Vec<Layouted> {
let mut loader = ctx.loader.borrow_mut();
vec![Layouted::Boxed(
shaping::shape(
&mut loader,
&self.text,
self.font_size,
self.dir,
&self.families,
self.variant,
)
.await,
self.aligns,
)]
}
}
impl Debug for Text {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "Text({})", self.text)
}
}
impl From<Text> for LayoutNode {
fn from(text: Text) -> Self {
Self::Text(text)
}
}
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