Struct MermaidOptions 

pub struct MermaidOptions {

    pub theme: MermaidThemeMode,
    pub background_color: Option<String>,
    pub responsive_svg: Option<bool>,
    pub center_labels: Option<bool>,
    pub output_dir: Option<PathBuf>,
    pub puppeteer_config_file: Option<PathBuf>,
    pub html_labels: Option<bool>,
    pub theme_variables: Option<MermaidThemeVariables>,
    pub font_family: Option<String>,
    pub font_size: Option<u32>,
    pub start_on_load: Option<bool>,
    pub arrow_marker_absolute: Option<bool>,
    pub deterministic_ids: Option<bool>,
    pub deterministic_id_seed: Option<String>,
    pub max_text_size: Option<u64>,
    pub max_edges: Option<u64>,
    pub security_level: Option<MermaidSecurityLevel>,
    pub log_level: Option<MermaidLogLevel>,
    pub look: Option<MermaidLook>,
    pub layout: Option<MermaidLayout>,
    pub hand_drawn_seed: Option<i64>,
    pub wrap: Option<bool>,
    pub flowchart: Option<MermaidFlowchartConfig>,
    pub sequence: Option<MermaidSequenceConfig>,
    pub gantt: Option<MermaidGanttConfig>,
    pub er: Option<MermaidErConfig>,
    pub pie: Option<MermaidPieConfig>,
    pub class_diagram: Option<MermaidNodeRendererConfig>,
    pub state: Option<MermaidNodeRendererConfig>,
    pub git_graph: Option<MermaidGitGraphConfig>,
    pub journey: Option<MermaidJourneyConfig>,
    pub mindmap: Option<MermaidMindmapConfig>,
    pub timeline: Option<MermaidTimelineConfig>,
    pub sankey: Option<MermaidSankeyConfig>,
    pub xy_chart: Option<MermaidXyChartConfig>,
    pub block: Option<MermaidBlockConfig>,
    pub requirement: Option<MermaidRequirementConfig>,
    pub c4: Option<MermaidC4Config>,
    pub architecture: Option<MermaidArchitectureConfig>,
    pub radar: Option<MermaidRadarConfig>,
    pub treemap: Option<MermaidTreemapConfig>,
}

Top-level mermaid configuration. Single flat object - every mermaid.initialize() knob (themeVariables, flowchart, sequence, gantt, look, layout, …) lives at the same level as the dmc-side rendering knobs (responsiveSvg, centerLabels, outputDir, …). All fields are typed end-to-end; no serde_json::Value catch-all.

None on CompileConfig.mermaid means “use built-in defaults” (light + dark themes, htmlLabels:false, flowchart spacing).

Fields

theme: MermaidThemeMode

Theme spec. Single string (one render -> chartSvg) or mode -> theme map (per-mode render -> ${mode}Svg each). Always stripped from the mermaid configFile in build_mermaid_config - it’s a dmc-side knob, not a mermaid one.

background_color: Option<String>

mmdc --backgroundColor. Default "transparent".

responsive_svg: Option<bool>

Apply the responsive-width post-process. Default true.

center_labels: Option<bool>

Inject text-anchor="middle" on label <text> / <tspan> so flowchart node labels center inside their <rect> when htmlLabels:false is in effect. Default true.

output_dir: Option<PathBuf>

Disk cache directory.

puppeteer_config_file: Option<PathBuf>

Forwarded to mmdc --puppeteerConfigFile.

html_labels: Option<bool>

Override the bundled htmlLabels: false default. true switches flowchart node labels back to HTML-in-<foreignObject>.

theme_variables: Option<MermaidThemeVariables>

font_family: Option<String>

font_size: Option<u32>

start_on_load: Option<bool>

arrow_marker_absolute: Option<bool>

deterministic_ids: Option<bool>

deterministic_id_seed: Option<String>

max_text_size: Option<u64>

max_edges: Option<u64>

security_level: Option<MermaidSecurityLevel>

log_level: Option<MermaidLogLevel>

look: Option<MermaidLook>

layout: Option<MermaidLayout>

hand_drawn_seed: Option<i64>

wrap: Option<bool>

flowchart: Option<MermaidFlowchartConfig>

sequence: Option<MermaidSequenceConfig>

gantt: Option<MermaidGanttConfig>

er: Option<MermaidErConfig>

pie: Option<MermaidPieConfig>

class_diagram: Option<MermaidNodeRendererConfig>

class is a Rust keyword - exposed under class in JSON via serde(rename).

state: Option<MermaidNodeRendererConfig>

git_graph: Option<MermaidGitGraphConfig>

journey: Option<MermaidJourneyConfig>

mindmap: Option<MermaidMindmapConfig>

timeline: Option<MermaidTimelineConfig>

sankey: Option<MermaidSankeyConfig>

xy_chart: Option<MermaidXyChartConfig>

block: Option<MermaidBlockConfig>

requirement: Option<MermaidRequirementConfig>

c4: Option<MermaidC4Config>

architecture: Option<MermaidArchitectureConfig>

radar: Option<MermaidRadarConfig>

treemap: Option<MermaidTreemapConfig>

Trait Implementations

impl Clone for MermaidOptions

fn clone(&self) -> MermaidOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MermaidOptions

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

Formats the value using the given formatter.

impl Default for MermaidOptions

fn default() -> MermaidOptions

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MermaidOptions

where MermaidOptions: Default,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for MermaidOptions

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.