Struct TextRunSegment 

pub(crate) struct TextRunSegment {
    pub info: Arc<FontAndScriptInfo>,
    pub byte_range: Range<usize>,
    pub character_range: Range<usize>,
    pub break_at_start: bool,
    pub runs: Vec<Arc<ShapedTextSlice>>,
}

Fields

info: Arc<FontAndScriptInfo>

Information about the font and language used in this text run. This is produced by segmenting the inline formatting context’s text content by font, script, and bidi level.

byte_range: Range<usize>

The range of bytes in the parent super::InlineFormattingContext’s text content.

character_range: Range<usize>

The range of characters in the parent super::InlineFormattingContext’s text content.

break_at_start: bool

Whether or not the linebreaker said that we should allow a line break at the start of this segment.

runs: Vec<Arc<ShapedTextSlice>>

The shaped runs within this segment.

Implementations

impl TextRunSegment

fn new( info: Arc<FontAndScriptInfo>, byte_range: Range<usize>, character_range: Range<usize>, ) -> Self

fn is_compatible( &self, new_font: &Option<FontRef>, new_script: Script, new_bidi_level: Level, ) -> bool

Returns true if the new Font, Script and BiDi Level are compatible with this segment or false otherwise.

fn update( &mut self, next_byte_index: usize, next_character_index: usize, new_script: Script, )

Update this segment to end at the given byte and character index. The update will only ever make the Script specific and will not change it otherwise.

fn layout_into_line_items( &self, text_run: &TextRun, soft_wrap_policy: SegmentStartSoftWrapPolicy, ifc: &mut InlineFormattingContextLayout<'_>, )

fn shape_text( &mut self, parent_style: &ComputedValues, formatting_context_text: &str, linebreaker: &mut LineBreaker, old_text_run_item: Option<TextRunItem>, )

Shape the text of this TextRunSegment, first finding “words” for the shaper by processing the linebreaks found in the owning super::InlineFormattingContext. Linebreaks are filtered, based on the style of the parent inline box.

fn is_compatible_with_old_shaping_result(&self, old_segment: &Self) -> bool

Trait Implementations

impl Clone for TextRunSegment

fn clone(&self) -> TextRunSegment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextRunSegment

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

Formats the value using the given formatter.

impl MallocSizeOf for TextRunSegment

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.