Struct ShapedTextSlice 

pub struct ShapedTextSlice {
    shaped_text: Arc<ShapedText>,
    glyph_range: Range<usize>,
    total_advance: Au,
    character_count: usize,
    total_word_separators: usize,
    is_whitespace: bool,
    ends_with_whitespace: bool,
}

A slice of a ShapedText which allows having different views into a shaped text run. This is used for splitting up shaped text during layout, without duplicating the entire run.

Fields

shaped_text: Arc<ShapedText>

The ShapedText that this ShapedTextSlice refers to.

glyph_range: Range<usize>

The range of glyphs within the ShapedText that this ShapedTextSlice represents.

total_advance: Au

A cache of the advance of the entire ShapedTextSlice.

character_count: usize

The number of characters that correspond to the glyphs in this ShapedTextSlice

total_word_separators: usize

A precomputed count of the number of word separators in the entire ShapedTextSlice. See https://drafts.csswg.org/css-text/#word-separator.

is_whitespace: bool

Whether or not this ShapedTextSlice is entirely whitespace.

ends_with_whitespace: bool

Whether or not this ShapedTextSlice ends with whitespace glyphs. Typically whitespace glyphs are placed in a separate slice, but that may not be the case with white-space: break-spaces.

Implementations

impl ShapedTextSlice

pub fn shaped_text(&self) -> Arc<ShapedText>

Return the ShapedText that backs this ShapedTextSlice.

pub fn glyph_count(&self) -> usize

Return the number of glyphs represented by this ShapedTextSlice.

pub fn character_count(&self) -> usize

The number of characters that were consumed to produce this ShapedTextSlice. Some characters correspond to more than one glyph and some glyphs correspond to more than one character.

pub fn total_advance(&self) -> Au

The total advance of the characters represented by this ShapedTextSlice.

pub fn total_word_separators(&self) -> usize

The number of word separators in this ShapedTextSlice.

pub fn is_whitespace(&self) -> bool

Whether or not this ShapedTextSlice is entirely whitespace.

pub fn ends_with_whitespace(&self) -> bool

Whether or not this ShapedTextSlice ends with whitespace.

pub fn glyphs(&self) -> impl DoubleEndedIterator<Item = GlyphInfo<'_>> + use<'_>

An iterator over the glyphs represented by this ShapedTextSlice.

Trait Implementations

impl Clone for ShapedTextSlice

fn clone(&self) -> ShapedTextSlice

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ShapedTextSlice

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ShapedTextSlice

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl MallocSizeOf for ShapedTextSlice

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.

impl Serialize for ShapedTextSlice

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.