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Struct Rect

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pub struct Rect {
    pub x: u16,
    pub y: u16,
    pub width: u16,
    pub height: u16,
}
Expand description

A Rectangular area.

A simple rectangle used in the computation of the layout and to give widgets a hint about the area they are supposed to render to.

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§x: u16

The x coordinate of the top left corner of the Rect.

§y: u16

The y coordinate of the top left corner of the Rect.

§width: u16

The width of the Rect.

§height: u16

The height of the Rect.

Implementations§

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impl Rect

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pub const ZERO: Rect

A zero sized Rect at position 0,0

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pub const fn new(x: u16, y: u16, width: u16, height: u16) -> Rect

Creates a new Rect, with width and height limited to keep both bounds within u16.

If the width or height would cause the right or bottom coordinate to be larger than the maximum value of u16, the width or height will be clamped to keep the right or bottom coordinate within u16.

§Examples
use ratatui_core::layout::Rect;

let rect = Rect::new(1, 2, 3, 4);
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pub const fn area(self) -> u32

The area of the Rect. If the area is larger than the maximum value of u16, it will be clamped to u16::MAX.

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pub const fn is_empty(self) -> bool

Returns true if the Rect has no area.

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pub const fn left(self) -> u16

Returns the left coordinate of the Rect.

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pub const fn right(self) -> u16

Returns the right coordinate of the Rect. This is the first coordinate outside of the Rect.

If the right coordinate is larger than the maximum value of u16, it will be clamped to u16::MAX.

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pub const fn top(self) -> u16

Returns the top coordinate of the Rect.

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pub const fn bottom(self) -> u16

Returns the bottom coordinate of the Rect. This is the first coordinate outside of the Rect.

If the bottom coordinate is larger than the maximum value of u16, it will be clamped to u16::MAX.

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pub const fn inner(self, margin: Margin) -> Rect

Returns a new Rect inside the current one, with the given margin on each side.

If the margin is larger than the Rect, the returned Rect will have no area.

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pub fn offset(self, offset: Offset) -> Rect

Moves the Rect without modifying its size.

Moves the Rect according to the given offset without modifying its width or height.

  • Positive x moves the whole Rect to the right, negative to the left.
  • Positive y moves the whole Rect to the bottom, negative to the top.

See Offset for details.

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pub fn union(self, other: Rect) -> Rect

Returns a new Rect that contains both the current one and the given one.

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pub fn intersection(self, other: Rect) -> Rect

Returns a new Rect that is the intersection of the current one and the given one.

If the two Rects do not intersect, the returned Rect will have no area.

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pub const fn intersects(self, other: Rect) -> bool

Returns true if the two Rects intersect.

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pub const fn contains(self, position: Position) -> bool

Returns true if the given position is inside the Rect.

The position is considered inside the Rect if it is on the Rect’s border.

§Examples
use ratatui_core::layout::{Position, Rect};

let rect = Rect::new(1, 2, 3, 4);
assert!(rect.contains(Position { x: 1, y: 2 }));
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pub fn clamp(self, other: Rect) -> Rect

Clamp this Rect to fit inside the other Rect.

If the width or height of this Rect is larger than the other Rect, it will be clamped to the other Rect’s width or height.

If the left or top coordinate of this Rect is smaller than the other Rect, it will be clamped to the other Rect’s left or top coordinate.

If the right or bottom coordinate of this Rect is larger than the other Rect, it will be clamped to the other Rect’s right or bottom coordinate.

This is different from Rect::intersection because it will move this Rect to fit inside the other Rect, while Rect::intersection instead would keep this Rect’s position and truncate its size to only that which is inside the other Rect.

§Examples
use ratatui_core::layout::Rect;

let area = Rect::new(0, 0, 100, 100);
let rect = Rect::new(80, 80, 30, 30).clamp(area);
assert_eq!(rect, Rect::new(70, 70, 30, 30));
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pub const fn rows(self) -> Rows

An iterator over rows within the Rect.

§Example
use ratatui_core::buffer::Buffer;
use ratatui_core::layout::Rect;
use ratatui_core::text::Line;
use ratatui_core::widgets::Widget;

fn render(area: Rect, buf: &mut Buffer) {
    for row in area.rows() {
        Line::raw("Hello, world!").render(row, buf);
    }
}
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pub const fn columns(self) -> Columns

An iterator over columns within the Rect.

§Example
use ratatui_core::buffer::Buffer;
use ratatui_core::layout::Rect;
use ratatui_core::text::Text;
use ratatui_core::widgets::Widget;

fn render(area: Rect, buf: &mut Buffer) {
    for (i, column) in area.columns().enumerate() {
        Text::from(format!("{}", i)).render(column, buf);
    }
}
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pub const fn positions(self) -> Positions

An iterator over the positions within the Rect.

The positions are returned in a row-major order (left-to-right, top-to-bottom).

§Example
use ratatui_core::buffer::Buffer;
use ratatui_core::layout::Rect;

fn render(area: Rect, buf: &mut Buffer) {
    for position in area.positions() {
        buf[(position.x, position.y)].set_symbol("x");
    }
}
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pub const fn as_position(self) -> Position

Returns a Position with the same coordinates as this Rect.

§Examples
use ratatui_core::layout::Rect;

let rect = Rect::new(1, 2, 3, 4);
let position = rect.as_position();
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pub const fn as_size(self) -> Size

Converts the Rect into a size struct.

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pub fn centered_horizontally(self, constraint: Constraint) -> Rect

Returns a new Rect, centered horizontally based on the provided constraint.

§Examples
use ratatui_core::layout::Constraint;
use ratatui_core::terminal::Frame;

fn render(frame: &mut Frame) {
    let area = frame.area().centered_horizontally(Constraint::Ratio(1, 2));
}
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pub fn centered_vertically(self, constraint: Constraint) -> Rect

Returns a new Rect, centered vertically based on the provided constraint.

§Examples
use ratatui_core::layout::Constraint;
use ratatui_core::terminal::Frame;

fn render(frame: &mut Frame) {
    let area = frame.area().centered_vertically(Constraint::Ratio(1, 2));
}
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pub fn centered( self, horizontal_constraint: Constraint, vertical_constraint: Constraint, ) -> Rect

Returns a new Rect, centered horizontally and vertically based on the provided constraints.

§Examples
use ratatui_core::layout::Constraint;
use ratatui_core::terminal::Frame;

fn render(frame: &mut Frame) {
    let area = frame
        .area()
        .centered(Constraint::Ratio(1, 2), Constraint::Ratio(1, 3));
}

Trait Implementations§

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impl Clone for Rect

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fn clone(&self) -> Rect

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Rect

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for Rect

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fn default() -> Rect

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for Rect

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fn deserialize<__D>( __deserializer: __D, ) -> Result<Rect, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Display for Rect

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl From<(Position, Size)> for Rect

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fn from(_: (Position, Size)) -> Rect

Converts to this type from the input type.
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impl From<Rect> for Position

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fn from(rect: Rect) -> Position

Converts to this type from the input type.
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impl From<Rect> for Size

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fn from(rect: Rect) -> Size

Converts to this type from the input type.
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impl Hash for Rect

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fn hash<__H>(&self, state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for Rect

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fn eq(&self, other: &Rect) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for Rect

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fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for Rect

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impl Eq for Rect

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impl StructuralPartialEq for Rect

Auto Trait Implementations§

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impl Freeze for Rect

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impl RefUnwindSafe for Rect

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impl Send for Rect

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impl Sync for Rect

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impl Unpin for Rect

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impl UnwindSafe for Rect

Blanket Implementations§

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impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S
where T: Real + Zero + Arithmetics + Clone, Swp: WhitePoint<T>, Dwp: WhitePoint<T>, D: AdaptFrom<S, Swp, Dwp, T>,

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fn adapt_into_using<M>(self, method: M) -> D
where M: TransformMatrix<T>,

Convert the source color to the destination color using the specified method.
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fn adapt_into(self) -> D

Convert the source color to the destination color using the bradford method by default.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T, C> ArraysFrom<C> for T
where C: IntoArrays<T>,

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fn arrays_from(colors: C) -> T

Cast a collection of colors into a collection of arrays.
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impl<T, C> ArraysInto<C> for T
where C: FromArrays<T>,

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fn arrays_into(self) -> C

Cast this collection of arrays into a collection of colors.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<WpParam, T, U> Cam16IntoUnclamped<WpParam, T> for U
where T: FromCam16Unclamped<WpParam, U>,

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type Scalar = <T as FromCam16Unclamped<WpParam, U>>::Scalar

The number type that’s used in parameters when converting.
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fn cam16_into_unclamped( self, parameters: BakedParameters<WpParam, <U as Cam16IntoUnclamped<WpParam, T>>::Scalar>, ) -> T

Converts self into C, using the provided parameters.
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T, C> ComponentsFrom<C> for T
where C: IntoComponents<T>,

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fn components_from(colors: C) -> T

Cast a collection of colors into a collection of color components.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromAngle<T> for T

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fn from_angle(angle: T) -> T

Performs a conversion from angle.
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impl<T, U> FromStimulus<U> for T
where U: IntoStimulus<T>,

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fn from_stimulus(other: U) -> T

Converts other into Self, while performing the appropriate scaling, rounding and clamping.
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> IntoAngle<U> for T
where U: FromAngle<T>,

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fn into_angle(self) -> U

Performs a conversion into T.
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impl<WpParam, T, U> IntoCam16Unclamped<WpParam, T> for U
where T: Cam16FromUnclamped<WpParam, U>,

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type Scalar = <T as Cam16FromUnclamped<WpParam, U>>::Scalar

The number type that’s used in parameters when converting.
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fn into_cam16_unclamped( self, parameters: BakedParameters<WpParam, <U as IntoCam16Unclamped<WpParam, T>>::Scalar>, ) -> T

Converts self into C, using the provided parameters.
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impl<T, U> IntoColor<U> for T
where U: FromColor<T>,

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fn into_color(self) -> U

Convert into T with values clamped to the color defined bounds Read more
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impl<T, U> IntoColorUnclamped<U> for T
where U: FromColorUnclamped<T>,

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fn into_color_unclamped(self) -> U

Convert into T. The resulting color might be invalid in its color space Read more
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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> IntoStimulus<T> for T

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fn into_stimulus(self) -> T

Converts self into T, while performing the appropriate scaling, rounding and clamping.
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToCompactString for T
where T: Display,

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impl<T> ToLine for T
where T: Display,

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fn to_line(&self) -> Line<'_>

Converts the value to a Line.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToSpan for T
where T: Display,

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fn to_span(&self) -> Span<'_>

Converts the value to a Span.
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T> ToText for T
where T: Display,

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fn to_text(&self) -> Text<'_>

Converts the value to a Text.
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impl<T, C> TryComponentsInto<C> for T
where C: TryFromComponents<T>,

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type Error = <C as TryFromComponents<T>>::Error

The error for when try_into_colors fails to cast.
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fn try_components_into(self) -> Result<C, <T as TryComponentsInto<C>>::Error>

Try to cast this collection of color components into a collection of colors. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, U> TryIntoColor<U> for T
where U: TryFromColor<T>,

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fn try_into_color(self) -> Result<U, OutOfBounds<U>>

Convert into T, returning ok if the color is inside of its defined range, otherwise an OutOfBounds error is returned which contains the unclamped color. Read more
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impl<C, U> UintsFrom<C> for U
where C: IntoUints<U>,

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fn uints_from(colors: C) -> U

Cast a collection of colors into a collection of unsigned integers.
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impl<C, U> UintsInto<C> for U
where C: FromUints<U>,

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fn uints_into(self) -> C

Cast this collection of unsigned integers into a collection of colors.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,