Struct PointLabels 

pub struct PointLabels {
    pub text: Arc<[String]>,
    pub display: LabelDisplay,
    pub placement: LabelPlacement,
    pub color: Option<Color>,
    pub size: f32,
}

Per-point labels for a scatter mark.

text is parallel to the mark’s points; an empty string (or an index past the end) means “no label”. Build with PointLabels::new and the display / placement / styling setters.

Fields

text: Arc<[String]>

Label text, indexed alongside the mark’s points.

display: LabelDisplay

placement: LabelPlacement

color: Option<Color>

Text colour. None uses a theme token (foreground for persistent labels, popover-foreground for tooltip chips).

size: f32

Label font size in logical pixels.

Implementations

impl PointLabels

pub fn new(text: impl IntoIterator<Item = impl Into<String>>) -> Self

Labels from any string iterator, defaulting to hover tooltips.

pub fn always(self) -> Self

Show every labelled point persistently rather than on hover.

pub fn on_hover(self) -> Self

Show on hover (the default).

pub fn placement(self, placement: LabelPlacement) -> Self

Set where persistent labels sit relative to the marker.

pub fn color(self, color: Color) -> Self

Override the label text colour.

pub fn size(self, size: f32) -> Self

Set the label font size (logical px).

pub fn get(&self, i: usize) -> Option<&str>

The label for point i, or None when absent / empty.

Trait Implementations

impl Clone for PointLabels

fn clone(&self) -> PointLabels

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PointLabels

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

Formats the value using the given formatter.

impl PartialEq for PointLabels

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for PointLabels