Enum LabelStrategy 

pub enum LabelStrategy {
    Horizontal,
    Rotated {
        margin: f64,
        skip_factor: Option<usize>,
    },
    Truncated {
        max_width: f64,
    },
    Sampled {
        indices: Vec<usize>,
    },
}

The strategy selected for rendering labels.

Variants

Horizontal

Labels displayed horizontally (no transformation needed).

Rotated

Labels rotated -45 degrees. Contains the additional bottom margin needed and an optional skip factor for label sampling after rotation.

Fields

margin: f64

skip_factor: Option<usize>

Truncated

Labels truncated to max_width with ellipsis.

Fields

max_width: f64

Sampled

Only a subset of labels shown (evenly sampled).

Fields

indices: Vec<usize>

Implementations

impl LabelStrategy

pub fn determine( labels: &[String], available_width: f64, config: &LabelStrategyConfig, ) -> Self

Determine the best label strategy based on available space and label measurements.

Algorithm (cascading priority):

1. Horizontal: if labels fit without overlap
2. Rotated: if <= 40 labels, rotate -45 degrees (post-rotation truncation is applied later in generate_x_axis to guarantee no overlap)
3. Truncated: if truncated labels fit and <= 50 labels
4. Sampled: show an evenly-distributed subset

Parameters:

• labels: the label strings
• available_width: total width available for the axis (chart width)
• config: strategy configuration

Trait Implementations

impl Clone for LabelStrategy

fn clone(&self) -> LabelStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LabelStrategy

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

Formats the value using the given formatter.

impl PartialEq for LabelStrategy

fn eq(&self, other: &LabelStrategy) -> 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 LabelStrategy