Struct LineWrapperHandle 

pub struct LineWrapperHandle { /* private fields */ }

A line wrapper borrowed from a TextSystem pool, returned on drop.

Implementations

impl LineWrapperHandle

pub fn new( wrapper: LineWrapper, recycle: impl FnOnce(LineWrapper) + Send + Sync + 'static, ) -> Self

Wraps wrapper, passing it back through recycle when dropped.

Methods from Deref<Target = LineWrapper>

pub const MAX_INDENT: u32 = 256

pub fn wrap_line<'a>( &'a mut self, fragments: &'a [LineFragment<'_>], wrap_width: Pixels, ) -> impl Iterator<Item = Boundary> + 'a

Wrap a line of text to the given width with this wrapper’s font and font size.

pub fn should_truncate_line( &mut self, line: &str, truncate_width: Pixels, truncation_affix: &str, truncate_from: TruncateFrom, ) -> Option<usize>

Determines if a line should be truncated based on its width.

Returns the truncation index in line.

pub fn truncate_line<'a>( &mut self, line: SharedString, truncate_width: Pixels, truncation_affix: &str, runs: &'a [TextRun], truncate_from: TruncateFrom, ) -> (SharedString, Cow<'a, [TextRun]>)

Truncate a line of text to the given width with this wrapper’s font and font size.

pub fn truncate_wrapped_line<'a>( &mut self, text: SharedString, wrap_width: Pixels, max_lines: usize, truncation_affix: &str, runs: &'a [TextRun], truncate_from: TruncateFrom, ) -> (SharedString, Cow<'a, [TextRun]>)

Truncate text to fit within a given number of wrapped lines.

Unlike truncate_line which treats the text as a flat width budget (width * max_lines), this method accounts for word-boundary wrapping: it walks through characters once, tracking wrap boundaries and the truncation point simultaneously. When text overflows on the last allowed line, it truncates there and appends the affix.

For max_lines == 1, this delegates to truncate_line.

pub fn width_for_char(&mut self, c: char) -> Pixels

The advance width of c in this wrapper’s font, cached after first use.

Trait Implementations

impl Deref for LineWrapperHandle

type Target = LineWrapper

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for LineWrapperHandle

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl Drop for LineWrapperHandle

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.