Struct BridgeOptions 

pub struct BridgeOptions {
    pub code_block_background: [f32; 4],
    pub code_block_foreground: Option<[f32; 4]>,
    pub echo_char: Option<char>,
}

Per-call knobs threaded through the conversion functions so that a host widget can override defaults driven by its active theme.

Default values reproduce the historical pre-themed behaviour: a light-grey card behind fenced code blocks and no foreground override for monospaced runs.

Fields

code_block_background: [f32; 4]

Background painted behind blocks where BlockFormat.is_code_block == Some(true) AND the block carries no explicit background_color. Has no effect on prose blocks or blocks that set their own background.

code_block_foreground: Option<[f32; 4]>

Foreground used for character runs whose font family resolves to monospace (set by the markdown importer for inline code spans and by is_code_block blocks). None keeps the engine-level default text colour. Only applied when the run carries no explicit foreground_color.

echo_char: Option<char>

When Some(c), every character of every block laid out with these options is replaced with c — one echo char per source char — before shaping. This is the password / secure-field masking path: the real text never reaches the shaper or the glyph atlas, only the echo character does. Emitting one echo per source char (not per grapheme) preserves char counts, so the engine’s char-indexed caret / selection / hit-test stay aligned with the host document’s positions. None (default) lays text out verbatim.

Trait Implementations

impl Clone for BridgeOptions

fn clone(&self) -> BridgeOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for BridgeOptions

fn default() -> Self

Returns the “default value” for a type.

impl Copy for BridgeOptions