Struct ShapedTextSlice 

pub struct ShapedTextSlice {
    shaped_text: Arc<ShapedText>,
    glyph_range: Range<usize>,
    total_advance: Au,
    character_count: Utf32CodeUnits,
    total_word_separators: usize,
    trailing_white_space: TrailingWhiteSpace<GlyphCountAndAdvance>,
    all_white_space: 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: Utf32CodeUnits

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.

trailing_white_space: TrailingWhiteSpace<GlyphCountAndAdvance>

The number of glyphs and their advance of the trailing white space portion of this slice during inline line layout.

all_white_space: bool

Whether or not the text that created this slice was entirely white space.

Implementations

impl ShapedTextSlice

pub fn glyph_count(&self) -> usize

Return the number of glyphs represented by this ShapedTextSlice.

pub fn character_count(&self) -> Utf32CodeUnits

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 hanging_and_removable_word_separators(&self) -> usize

The number of word separators in the hanging and removable portion of this ShapedTextSlice.

pub fn all_removable(&self) -> bool

Whether or not this ShapedTextSlice is composed of only removable characters.

pub fn has_non_hangable_non_removable_content(&self) -> bool

Whether or not this ShapedTextSlice has any non-hangable and non-removable glyphs.

pub fn removable_advance(&self) -> Au

The advance of this ShapedTextSlice that is removable at the end of a line.

pub fn hangable_advance(&self) -> Au

The advance of this ShapedTextSlice that is hangable at the end of a line.

pub fn all_white_space(&self) -> bool

Whether or not this ShapedTextSlice is entirely composed of white space.

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

An iterator over the glyphs represented by this ShapedTextSlice.

fn split_off_count(&mut self, trimmed_glyph_count: usize) -> Arc<Self>

pub fn without_removable_white_space(&self) -> Arc<Self>

Produce a new ShapedTextSlice that includes all of the glyphs that self does except for the removable portion of the slice.

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 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.