Struct TextCache 

pub struct TextCache {
    pub text_strings: Vec<Option<String>>,
    pub next_free_slot: usize,
    pub slot_generations: Vec<u64>,
    pub generation: u64,
}

Fields

text_strings: Vec<Option<String>>

next_free_slot: usize

slot_generations: Vec<u64>

generation: u64

Implementations

impl TextCache

pub fn new() -> TextCache

pub fn add_text(&mut self, content: impl Into<String>) -> usize

pub fn get_text(&self, index: usize) -> Option<&str>

pub fn set_text(&mut self, index: usize, content: impl Into<String>) -> bool

Puts new content in a slot, answering whether the slot exists.

Writing a slot the same thing it already holds is not a change. The layout pass gates on this generation to decide whether any text moved since the last frame, and bumping it regardless defeated that gate outright: an interface that refreshes its labels every frame, which is the ordinary way to write one, relaid the entire tree every frame whether or not a single character differed.

pub fn remove_text(&mut self, index: usize) -> bool

pub fn is_slot_valid(&self, index: usize) -> bool

pub fn get_all_text_with_indices(&self) -> Vec<(usize, &str)>

pub fn get_valid_slots(&self) -> Vec<usize>

pub fn compact(&mut self) -> Vec<(usize, usize)>

Trait Implementations

impl Default for TextCache

fn default() -> TextCache

Returns the “default value” for a type.