Struct CompositeStyle 

pub struct CompositeStyle {
    pub corner: Option<BaseStyle>,
    pub border: Option<BaseStyle>,
    pub arrow: Option<BaseStyle>,
    pub edge: Option<BaseStyle>,
    pub junction: Option<BaseStyle>,
    pub back: Option<BaseStyle>,
    pub subgraph: Option<BaseStyle>,
}

Component-specific style configuration

Each component can be styled independently using any BorderStyle:

• corner - Box corners (┌┐└┘ for unicode, ╭╮╰╯ for rounded, ╔╗╚╝ for double, • for dots, * for stars, etc.)
• border - Box borders/lines (─│ for unicode, ═║ for double, ━┃ for heavy, etc.)
• arrow - Arrow heads (▼◀▶ for unicode, v<> for ascii)
• edge - Connection lines between boxes
• junction - T-junctions where edges meet (┬┴├┤ for unicode, ╦╩╠╣ for double, etc.)
• back - Back edges for cycles (dotted/dashed lines)
• subgraph - Subgraph container borders (defaults to ascii for visual distinction)

Fields

corner: Option<BaseStyle>

border: Option<BaseStyle>

arrow: Option<BaseStyle>

edge: Option<BaseStyle>

junction: Option<BaseStyle>

back: Option<BaseStyle>

subgraph: Option<BaseStyle>

Implementations

impl CompositeStyle

pub fn from_base(style: BaseStyle) -> Self

Create a CompositeStyle with all components set to the given base style

pub fn parse(s: &str) -> Self

Parse a composite style string like “box:rounded,arrow:heavy,line:double”

pub fn to_style_chars(&self, fallback: BaseStyle) -> StyleChars

Create a mixed StyleChars from component styles with a fallback

pub fn to_subgraph_chars(&self) -> &'static StyleChars

Get StyleChars for subgraph borders.

Subgraphs default to Heavy style for visual distinction from node boxes. This can be overridden with --style="subgraph:ascii" etc.

Trait Implementations

impl Clone for CompositeStyle

fn clone(&self) -> CompositeStyle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompositeStyle

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

Formats the value using the given formatter.

impl Default for CompositeStyle

fn default() -> CompositeStyle

Returns the “default value” for a type.