bite-gp-types 1.25.201

gpui_types — part of the bite-gpui rearchitecture of zed's gpui
Documentation 
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//! Layout-space primitives and conversions to [`taffy`] types.
//!
//! These live here because Rust's orphan rules require `From` impls that bridge
//! two foreign types to be defined in the crate that owns one of them. Now that
//! [`Point`] and [`Size`] live in this crate, the conversions between them and
//! taffy's geometry types must be defined here too.

use core::fmt::Debug;

use taffy::{
    geometry::{Point as TaffyPoint, Size as TaffySize},
    style::AvailableSpace as TaffyAvailableSpace,
};

use crate::{Pixels, Point, Size};

impl<T, T2> From<TaffyPoint<T>> for Point<T2>
where
    T: Into<T2>,
    T2: Clone + Debug + Default + PartialEq,
{
    fn from(point: TaffyPoint<T>) -> Point<T2> {
        Point {
            x: point.x.into(),
            y: point.y.into(),
        }
    }
}

impl<T, T2> From<Point<T>> for TaffyPoint<T2>
where
    T: Into<T2> + Clone + Debug + Default + PartialEq,
{
    fn from(val: Point<T>) -> Self {
        TaffyPoint {
            x: val.x.into(),
            y: val.y.into(),
        }
    }
}

impl<T, U> From<TaffySize<T>> for Size<U>
where
    T: Into<U>,
    U: Clone + Debug + Default + PartialEq,
{
    fn from(taffy_size: TaffySize<T>) -> Self {
        Size {
            width: taffy_size.width.into(),
            height: taffy_size.height.into(),
        }
    }
}

impl<T, U> From<Size<T>> for TaffySize<U>
where
    T: Into<U> + Clone + Debug + Default + PartialEq,
{
    fn from(size: Size<T>) -> Self {
        TaffySize {
            width: size.width.into(),
            height: size.height.into(),
        }
    }
}

/// The space available for an element to be laid out in
#[derive(Copy, Clone, Default, Debug, Eq, PartialEq)]
pub enum AvailableSpace {
    /// The amount of space available is the specified number of pixels
    Definite(Pixels),
    /// The amount of space available is indefinite and the node should be laid out under a min-content constraint
    #[default]
    MinContent,
    /// The amount of space available is indefinite and the node should be laid out under a max-content constraint
    MaxContent,
}

impl AvailableSpace {
    /// Returns a `Size` with both width and height set to `AvailableSpace::MinContent`.
    ///
    /// This function is useful when you want to create a `Size` with the minimum content constraints
    /// for both dimensions.
    pub const fn min_size() -> Size<Self> {
        Size {
            width: Self::MinContent,
            height: Self::MinContent,
        }
    }
}

impl From<AvailableSpace> for TaffyAvailableSpace {
    fn from(space: AvailableSpace) -> TaffyAvailableSpace {
        match space {
            AvailableSpace::Definite(Pixels(value)) => TaffyAvailableSpace::Definite(value),
            AvailableSpace::MinContent => TaffyAvailableSpace::MinContent,
            AvailableSpace::MaxContent => TaffyAvailableSpace::MaxContent,
        }
    }
}

impl From<TaffyAvailableSpace> for AvailableSpace {
    fn from(space: TaffyAvailableSpace) -> AvailableSpace {
        match space {
            TaffyAvailableSpace::Definite(value) => AvailableSpace::Definite(Pixels(value)),
            TaffyAvailableSpace::MinContent => AvailableSpace::MinContent,
            TaffyAvailableSpace::MaxContent => AvailableSpace::MaxContent,
        }
    }
}

impl From<Pixels> for AvailableSpace {
    fn from(pixels: Pixels) -> Self {
        AvailableSpace::Definite(pixels)
    }
}

impl From<Size<Pixels>> for Size<AvailableSpace> {
    fn from(size: Size<Pixels>) -> Self {
        Size {
            width: AvailableSpace::Definite(size.width),
            height: AvailableSpace::Definite(size.height),
        }
    }
}