Struct SharedTextRunData 

pub(crate) struct SharedTextRunData {
    pub inline_styles: SharedInlineStyles,
    pub character_range_in_ifc_text: Range<usize>,
    pub original_offset: Utf32CodeUnits,
    pub selection: Option<SharedSelection>,
    pub offset_map: ArcRefCell<OffsetMap>,
}

A data structure that holds per-TextRun data used on TextFragments. This ensures that the data is not duplicated between fragments.

Fields

inline_styles: SharedInlineStyles

The crate::SharedStyle from this TextRun’s parent element. This is shared so that incremental layout can simply update the parent element and this TextRun will be updated automatically.

character_range_in_ifc_text: Range<usize>

The range of characters in this text in InlineFormattingContext::text_content of the InlineFormattingContext that owns this TextRun. These are counting chars, not UTF-8 offsets.

original_offset: Utf32CodeUnits

The original offset of this TextRun in the InlineFormattingContext’s input text (untransformed by white space collapse and text-transform).

selection: Option<SharedSelection>

The selected text in this TextRun. This may either be document selection or form control selection.

offset_map: ArcRefCell<OffsetMap>

The OffsetMap used when creating this TextRun’s InlineFormattingContext. This is used for mapping between DOM text offsets and layout text offsets (and vice-versa).

Implementations

impl SharedTextRunData

pub(crate) fn map_dom_range_to_transformed_range( &self, range: Range<Utf32CodeUnits>, ) -> Range<Utf32CodeUnits>

Map a range in the originating TextRun’s DOM node text into the range in the TextRun’s layout transformed (by white space collapse and text-transform) text.

pub(crate) fn map_transformed_offset_to_dom_offset( &self, offset: Utf32CodeUnits, ) -> Utf32CodeUnits

Map an offset in the originating TextRuns DOM node’s transformed text (by white space collapse and text-transform) to untransformed text for use by the DOM.

Trait Implementations

impl Debug for SharedTextRunData

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

Formats the value using the given formatter.

impl MallocSizeOf for SharedTextRunData

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.