Offset

Translates the floating element along the specified axes.

This lets you add distance (margin or spacing) between the reference and floating element, slightly alter the placement, or even create custom placements.

Type: Placement Modifier

Usage

use floating_ui_core::{compute_position, ComputePositionConfig, Offset, OffsetOptions};

compute_position(
    reference_el,
    floating_el,
    ComputePositionConfig::new(platform)
        .middleware(vec![
            Box::new(Offset::new(OffsetOptions::default())),
        ]),
);

use floating_ui_dom::{compute_position, ComputePositionConfig, Offset, OffsetOptions};

compute_position(
    reference_el,
    floating_el,
    ComputePositionConfig::default()
        .middleware(vec![
            Box::new(Offset::new(OffsetOptions::default())),
        ]),
);

use floating_ui_leptos::{use_floating, Offset, OffsetOptions, UseFloatingOptions};

use_floating(
    reference_el,
    floating_el,
    UseFloatingOptions::default()
        .middleware(vec![
            Box::new(Offset::new(OffsetOptions::default())),
        ].into()),
);

use floating_ui_yew::{use_floating, Offset, OffsetOptions, UseFloatingOptions};

use_floating(
    reference_el,
    floating_el,
    UseFloatingOptions::default()
        .middleware(vec![
            Box::new(Offset::new(OffsetOptions::default())),
        ]),
);

The value(s) passed are logical, meaning their effect on the physical result is dependent on the placement, writing direction (e.g. RTL), or alignment.

Order

Offset should generally be placed at the beginning of your middleware vector.

Options

These are the options you can pass to Offset.

pub enum OffsetOptions {
    Value(f64),
    Values(OffsetOptionsValues),
}

pub struct OffsetOptionsValues {
    pub main_axis: Option<f64>,
    pub cross_axis: Option<f64>,
    pub alignment_axis: Option<f64>,
}

A single number represents the distance (gutter or margin) between the floating element and the reference element. This is shorthand for main_axis.

Offset::new(OffsetOptions::Value(10.0))

A struct instance can also be passed, which enables you to individually configure each axis.

`main_axis`

Default: 0.0

The axis that runs along the side of the floating element. Represents the distance (gutter or margin) between the floating element and the reference element.

Offset::new(OffsetOptions::Values(
    OffsetOptionsValues::default().main_axis(10.0)
))

`cross_axis`

Default: 0.0

The axis that runs along the alignment of the floating element. Represents the skidding between the floating element and the reference element.

Offset::new(OffsetOptions::Values(
    OffsetOptionsValues::default().cross_axis(20.0)
))

`alignment_axis`

Default: None

The same axis as cross_axis but applies only to aligned placements and inverts the End alignment. When set to a number, it overrides the cross_axis value.

A positive number will move the floating element in the direction of the opposite edge to the one that is aligned, while a negative number the reverse.

Offset::new(OffsetOptions::Values(
    OffsetOptionsValues::default().alignment_axis(20.0)
))

Rust Floating UI