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use crate::{Rectangle, Vector};
use std::sync::Arc;
#[derive(Debug, Clone)]
pub enum Primitive {
/// A group of primitives
Group {
/// The primitives of the group
primitives: Vec<Primitive>,
},
/// A clip primitive
Clip {
/// The bounds of the clip
bounds: Rectangle,
/// The content of the clip
content: Box<Primitive>,
},
/// A primitive that applies a translation
Translate {
/// The translation vector
translation: Vector,
/// The primitive to translate
content: Box<Primitive>,
},
/// A cached primitive.
///
/// This can be useful if you are implementing a widget where primitive
/// generation is expensive.
Cached {
/// The cached primitive
cache: Arc<Primitive>,
},
/// A basic primitive.
Basic(iced_graphics::Primitive),
}
impl iced_graphics::backend::Primitive for Primitive {
fn translate(self, translation: Vector) -> Self {
Self::Translate {
translation,
content: Box::new(self),
}
}
fn clip(self, bounds: Rectangle) -> Self {
Self::Clip {
bounds,
content: Box::new(self),
}
}
}
#[derive(Debug, Clone, Default)]
pub struct Recording(pub(crate) Vec<Primitive>);
impl iced_graphics::backend::Recording for Recording {
type Primitive = Primitive;
fn push(&mut self, primitive: Primitive) {
self.0.push(primitive);
}
fn push_basic(&mut self, basic: iced_graphics::Primitive) {
self.0.push(Primitive::Basic(basic));
}
fn group(self) -> Self::Primitive {
Primitive::Group { primitives: self.0 }
}
fn clear(&mut self) {
self.0.clear();
}
}
impl Recording {
pub fn primitives(&self) -> &[Primitive] {
&self.0
}
}
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