Struct Gpar 

pub struct Gpar {

    pub col: Option<[u8; 4]>,
    pub fill: Option<[u8; 4]>,
    pub lwd: Option<f64>,
    pub lty: Option<LineType>,
    pub fontsize: Option<f64>,
    pub lineheight: Option<f64>,
    pub font: Option<FontFace>,
    pub fontfamily: Option<String>,
    pub cex: Option<f64>,
    pub alpha: Option<f64>,
    pub lineend: Option<LineEnd>,
    pub linejoin: Option<LineJoin>,
    pub linemitre: Option<f64>,
    pub just_x: Option<f64>,
    pub just_y: Option<f64>,
}

Grid graphical parameter set.

Each field is Option — None means “inherit from parent viewport”. Use inherit_from() to fill in missing values from a parent Gpar, or use the effective_*() methods to get resolved values with defaults.

Fields

col: Option<[u8; 4]>

Stroke color as RGBA.

fill: Option<[u8; 4]>

Fill color as RGBA.

lwd: Option<f64>

Line width (default 1.0).

lty: Option<LineType>

Line type (solid, dashed, etc.).

fontsize: Option<f64>

Font size in points (default 12.0).

lineheight: Option<f64>

Line height multiplier (default 1.2).

font: Option<FontFace>

Font face (plain, bold, italic, etc.).

fontfamily: Option<String>

Font family name.

cex: Option<f64>

Character expansion factor (multiplier on fontsize).

alpha: Option<f64>

Alpha transparency (0.0 = fully transparent, 1.0 = fully opaque).

lineend: Option<LineEnd>

Line end style.

linejoin: Option<LineJoin>

Line join style.

linemitre: Option<f64>

Mitre limit for line joins.

just_x: Option<f64>

Horizontal justification (0 = left, 0.5 = center, 1 = right).

just_y: Option<f64>

Vertical justification (0 = bottom, 0.5 = center, 1 = top).

Implementations

impl Gpar

pub fn new() -> Self

Create a new empty gpar (all fields None).

pub fn inherit_from(&mut self, parent: &Gpar)

Fill in any None fields from the parent gpar.

This implements grid’s inheritance: child viewports/grobs inherit graphical parameters from their parent when not explicitly set.

pub fn with_parent(&self, parent: &Gpar) -> Gpar

Create a new gpar that is this gpar with parent values filled in.

pub fn effective_col(&self) -> [u8; 4]

Effective stroke color: this gpar’s col, or black.

pub fn effective_fill(&self) -> [u8; 4]

Effective fill color: this gpar’s fill, or transparent.

pub fn effective_lwd(&self) -> f64

Effective line width: this gpar’s lwd, or 1.0.

pub fn effective_lty(&self) -> LineType

Effective line type: this gpar’s lty, or Solid.

pub fn effective_fontsize(&self) -> f64

Effective font size in points: this gpar’s fontsize, or 12.0.

pub fn effective_lineheight(&self) -> f64

Effective line height multiplier: this gpar’s lineheight, or 1.2.

pub fn effective_font(&self) -> FontFace

Effective font face: this gpar’s font, or Plain.

pub fn effective_fontfamily(&self) -> &str

Effective font family: this gpar’s fontfamily, or “sans”.

pub fn effective_cex(&self) -> f64

Effective character expansion factor: this gpar’s cex, or 1.0.

pub fn effective_alpha(&self) -> f64

Effective alpha: this gpar’s alpha, or 1.0 (fully opaque).

pub fn effective_lineend(&self) -> LineEnd

Effective line end style: this gpar’s lineend, or Round.

pub fn effective_linejoin(&self) -> LineJoin

Effective line join style: this gpar’s linejoin, or Round.

pub fn effective_linemitre(&self) -> f64

Effective mitre limit: this gpar’s linemitre, or 10.0 (R default).

Trait Implementations

impl Clone for Gpar

fn clone(&self) -> Gpar

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Gpar

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

Formats the value using the given formatter.

impl Default for Gpar

fn default() -> Gpar

Returns the “default value” for a type.