Enum slint_interpreter::Value

#[non_exhaustive]
#[repr(C)]
pub enum Value {
    Void,
    Number(f64),
    String(SharedString),
    Bool(bool),
    Image(Image),
    Model(ModelRc<Value>),
    Struct(Struct),
    Brush(Brush),
    // some variants omitted
}

This is a dynamically typed value used in the Slint interpreter. It can hold a value of different types, and you should use the From or TryFrom traits to access the value.

use core::convert::TryInto;
// create a value containing an integer
let v = Value::from(100u32);
assert_eq!(v.try_into(), Ok(100u32));

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Void

There is nothing in this value. That’s the default. For example, a function that do not return a result would return a Value::Void

Number(f64)

An int or a float (this is also used for unit based type such as length or angle)

String(SharedString)

Correspond to the string type in .slint

Bool(bool)

Correspond to the bool type in .slint

Image(Image)

Correspond to the image type in .slint

Model(ModelRc<Value>)

A model (that includes array in .slint)

Struct(Struct)

An object

Brush(Brush)

Correspond to brush or color type in .slint. For color, this is then a Brush::SolidColor

Implementations

impl Value

pub fn value_type(&self) -> ValueType

Returns the type variant that this value holds without the containing value.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Default for Value

fn default() -> Self

Returns the “default value” for a type.

impl From<()> for Value

fn from(_: ()) -> Self

Converts to this type from the input type.

impl From<AccessibleRole> for Value

fn from(v: AccessibleRole) -> Self

Converts to this type from the input type.

impl From<Brush> for Value

fn from(v: Brush) -> Self

Converts to this type from the input type.

impl From<Color> for Value

fn from(c: Color) -> Self

Converts to this type from the input type.

impl From<DialogButtonRole> for Value

fn from(v: DialogButtonRole) -> Self

Converts to this type from the input type.

impl From<EasingCurve> for Value

fn from(v: EasingCurve) -> Self

Converts to this type from the input type.

impl From<EventResult> for Value

fn from(v: EventResult) -> Self

Converts to this type from the input type.

impl From<FillRule> for Value

fn from(v: FillRule) -> Self

Converts to this type from the input type.

impl From<Image> for Value

fn from(v: Image) -> Self

Converts to this type from the input type.

impl From<ImageFit> for Value

fn from(v: ImageFit) -> Self

Converts to this type from the input type.

impl From<ImageRendering> for Value

fn from(v: ImageRendering) -> Self

Converts to this type from the input type.

impl From<InputType> for Value

fn from(v: InputType) -> Self

Converts to this type from the input type.

impl From<Instant> for Value

fn from(value: Instant) -> Self

Converts to this type from the input type.

impl From<KeyEvent> for Value

fn from(_: KeyEvent) -> Self

Converts to this type from the input type.

impl From<KeyboardModifiers> for Value

fn from(_: KeyboardModifiers) -> Self

Converts to this type from the input type.

impl From<LayoutAlignment> for Value

fn from(v: LayoutAlignment) -> Self

Converts to this type from the input type.

impl From<LayoutInfo> for Value

fn from(_: LayoutInfo) -> Self

Converts to this type from the input type.

impl From<Length<f32, LogicalPx>> for Value

fn from(l: LogicalLength) -> Self

Converts to this type from the input type.

impl From<MouseCursor> for Value

fn from(v: MouseCursor) -> Self

Converts to this type from the input type.

impl From<PathData> for Value

fn from(v: PathData) -> Self

Converts to this type from the input type.

impl From<PathEvent> for Value

fn from(v: PathEvent) -> Self

Converts to this type from the input type.

impl From<Point2D<f32, UnknownUnit>> for Value

fn from(_: Point) -> Self

Converts to this type from the input type.

impl From<PointerEvent> for Value

fn from(_: PointerEvent) -> Self

Converts to this type from the input type.

impl From<PointerEventButton> for Value

fn from(v: PointerEventButton) -> Self

Converts to this type from the input type.

impl From<PointerEventKind> for Value

fn from(v: PointerEventKind) -> Self

Converts to this type from the input type.

impl From<SharedString> for Value

fn from(v: SharedString) -> Self

Converts to this type from the input type.

impl From<SharedVector<f32>> for Value

fn from(v: SharedVector<f32>) -> Self

Converts to this type from the input type.

impl From<StandardButtonKind> for Value

fn from(v: StandardButtonKind) -> Self

Converts to this type from the input type.

impl From<StandardListViewItem> for Value

fn from(_: StandardListViewItem) -> Self

Converts to this type from the input type.

impl From<StateInfo> for Value

fn from(_: StateInfo) -> Self

Converts to this type from the input type.

impl From<Struct> for Value

fn from(v: Struct) -> Self

Converts to this type from the input type.

impl From<TextHorizontalAlignment> for Value

fn from(v: TextHorizontalAlignment) -> Self

Converts to this type from the input type.

impl From<TextOverflow> for Value

fn from(v: TextOverflow) -> Self

Converts to this type from the input type.

impl From<TextVerticalAlignment> for Value

fn from(v: TextVerticalAlignment) -> Self

Converts to this type from the input type.

impl From<TextWrap> for Value

fn from(v: TextWrap) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(v: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(v: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(v: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(v: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(v: i64) -> Self

Converts to this type from the input type.

impl From<isize> for Value

fn from(v: isize) -> Self

Converts to this type from the input type.

impl From<u32> for Value

fn from(v: u32) -> Self

Converts to this type from the input type.

impl From<u64> for Value

fn from(v: u64) -> Self

Converts to this type from the input type.

impl From<usize> for Value

fn from(v: usize) -> Self

Converts to this type from the input type.

impl PartialEq<Value> for Value

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<Value> for ()

type Error = ()

The type returned in the event of a conversion error.

fn try_from(_: Value) -> Result<(), Self::Error>

Performs the conversion.

impl TryFrom<Value> for AccessibleRole

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<AccessibleRole, ()>

Performs the conversion.

impl TryFrom<Value> for Brush

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<Brush, Self::Error>

Performs the conversion.

impl TryFrom<Value> for Color

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<Color, Self::Error>

Performs the conversion.

impl TryFrom<Value> for DialogButtonRole

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<DialogButtonRole, ()>

Performs the conversion.

impl TryFrom<Value> for EasingCurve

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<EasingCurve, Self::Error>

Performs the conversion.

impl TryFrom<Value> for EventResult

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<EventResult, ()>

Performs the conversion.

impl TryFrom<Value> for FillRule

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<FillRule, ()>

Performs the conversion.

impl TryFrom<Value> for Image

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<Image, Self::Error>

Performs the conversion.

impl TryFrom<Value> for ImageFit

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<ImageFit, ()>

Performs the conversion.

impl TryFrom<Value> for ImageRendering

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<ImageRendering, ()>

Performs the conversion.

impl TryFrom<Value> for InputType

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<InputType, ()>

Performs the conversion.

impl TryFrom<Value> for Instant

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<Instant, Self::Error>

Performs the conversion.

impl TryFrom<Value> for KeyEvent

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<KeyEvent, Self::Error>

Performs the conversion.

impl TryFrom<Value> for KeyboardModifiers

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<KeyboardModifiers, Self::Error>

Performs the conversion.

impl TryFrom<Value> for LayoutAlignment

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<LayoutAlignment, ()>

Performs the conversion.

impl TryFrom<Value> for LayoutInfo

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<LayoutInfo, Self::Error>

Performs the conversion.

impl TryFrom<Value> for LogicalLength

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<LogicalLength, Self::Error>

Performs the conversion.

impl TryFrom<Value> for MouseCursor

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<MouseCursor, ()>

Performs the conversion.

impl TryFrom<Value> for PathData

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<PathData, Self::Error>

Performs the conversion.

impl TryFrom<Value> for PathEvent

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<PathEvent, ()>

Performs the conversion.

impl TryFrom<Value> for Point

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<Point, Self::Error>

Performs the conversion.

impl TryFrom<Value> for PointerEvent

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<PointerEvent, Self::Error>

Performs the conversion.

impl TryFrom<Value> for PointerEventButton

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<PointerEventButton, ()>

Performs the conversion.

impl TryFrom<Value> for PointerEventKind

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<PointerEventKind, ()>

Performs the conversion.

impl TryFrom<Value> for SharedString

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<SharedString, Self::Error>

Performs the conversion.

impl TryFrom<Value> for SharedVector<f32>

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<SharedVector<f32>, Self::Error>

Performs the conversion.

impl TryFrom<Value> for StandardButtonKind

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<StandardButtonKind, ()>

Performs the conversion.

impl TryFrom<Value> for StandardListViewItem

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<StandardListViewItem, Self::Error>

Performs the conversion.

impl TryFrom<Value> for StateInfo

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<StateInfo, Self::Error>

Performs the conversion.

impl TryFrom<Value> for Struct

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<Struct, Self::Error>

Performs the conversion.

impl TryFrom<Value> for TextHorizontalAlignment

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<TextHorizontalAlignment, ()>

Performs the conversion.

impl TryFrom<Value> for TextOverflow

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<TextOverflow, ()>

Performs the conversion.

impl TryFrom<Value> for TextVerticalAlignment

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<TextVerticalAlignment, ()>

Performs the conversion.

impl TryFrom<Value> for TextWrap

type Error = ()

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<TextWrap, ()>

Performs the conversion.

impl TryFrom<Value> for bool

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<bool, Self::Error>

Performs the conversion.

impl TryFrom<Value> for f32

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<f32, Self::Error>

Performs the conversion.

impl TryFrom<Value> for f64

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<f64, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i32

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<i32, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i64

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<i64, Self::Error>

Performs the conversion.

impl TryFrom<Value> for isize

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<isize, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u32

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<u32, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u64

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<u64, Self::Error>

Performs the conversion.

impl TryFrom<Value> for usize

type Error = Value

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<usize, Self::Error>

Performs the conversion.

impl ValueType for Value