Struct TextLayoutCache 

pub struct TextLayoutCache {
    pub layouts: Layouts,
    pub max_width: f64,
    /* private fields */
}

Fields

layouts: Layouts

(Font Size -> (Buffer Line Number -> Text Layout))

Different font-sizes are cached separately, which is useful for features like code lens where the font-size can rapidly change.

It would also be useful for a prospective minimap feature.

max_width: f64

The maximum width seen so far, used to determine if we need to show horizontal scrollbar

Implementations

impl TextLayoutCache

pub fn clear(&mut self, cache_rev: u64, config_id: Option<ConfigId>)

pub fn clear_unchanged(&mut self)

Clear the layouts without changing the document cache revision.

Ex: Wrapping width changed, which does not change what the document holds.

pub fn get(&self, font_size: usize, line: usize) -> Option<&Arc<TextLayoutLine>>

pub fn get_mut( &mut self, font_size: usize, line: usize, ) -> Option<&mut Arc<TextLayoutLine>>

pub fn get_layout_col( &self, text_prov: &impl TextLayoutProvider, font_size: usize, line: usize, line_index: usize, ) -> Option<(usize, usize)>

Get the (start, end) columns of the (line, line_index)

Trait Implementations

impl Default for TextLayoutCache

fn default() -> TextLayoutCache

Returns the “default value” for a type.