Struct MarkdownCache 

pub struct MarkdownCache {
    pub blocks: Vec<Block>,
    pub heights: Vec<f32>,
    pub cum_y: Vec<f32>,
    pub total_height: f32,
    pub last_scroll_y: f32,
    /* private fields */
}

Cached pre-parsed blocks, height estimates, and the source hash.

Fields

blocks: Vec<Block>

heights: Vec<f32>

Estimated pixel height for each top-level block (same len as blocks).

cum_y: Vec<f32>

Cumulative Y offsets: cum_y[i] = sum of heights[0..i].

total_height: f32

Total estimated height of all blocks.

last_scroll_y: f32

Last rendered scroll-y offset (set by show_scrollable).

Implementations

impl MarkdownCache

pub fn clear(&mut self)

Invalidate the cache so the next render re-parses.

pub fn ensure_parsed(&mut self, source: &str)

pub fn ensure_heights( &mut self, body_size: f32, wrap_width: f32, style: &MarkdownStyle, )

pub fn heading_y(&self, ordinal: usize) -> Option<f32>

Return the Y offset for the ordinalth non-empty heading block (0-based). Empty headings (no visible text) are skipped so the ordinal aligns with nav_outline::extract_headings which also excludes them.

Uses the pre-cached heading_block_indices for O(1) lookup.

Trait Implementations

impl Default for MarkdownCache

fn default() -> MarkdownCache

Returns the “default value” for a type.