Struct CachedFontTextMeasurer 

pub struct CachedFontTextMeasurer { /* private fields */ }

Implementations

impl CachedFontTextMeasurer

pub fn with_text_resources( text_resources: SoftwareTextResources, capacity: usize, ) -> Self

Trait Implementations

impl TextMeasurer for CachedFontTextMeasurer

fn measure(&self, text: &AnnotatedString, style: &TextStyle) -> TextMetrics

fn get_offset_for_position( &self, text: &AnnotatedString, style: &TextStyle, x: f32, _y: f32, ) -> usize

fn get_cursor_x_for_offset( &self, text: &AnnotatedString, style: &TextStyle, offset: usize, ) -> f32

fn layout(&self, text: &AnnotatedString, style: &TextStyle) -> TextLayoutResult

fn choose_auto_hyphen_break( &self, line: &str, style: &TextStyle, segment_start_char: usize, measured_break_char: usize, ) -> Option<usize>

Returns an alternate break boundary for Hyphens::Auto when a greedy break split lands in the middle of a word.

fn measure_for_node( &self, node_id: Option<usize>, text: &AnnotatedString, style: &TextStyle, ) -> TextMetrics

fn measure_subsequence( &self, text: &AnnotatedString, range: Range<usize>, style: &TextStyle, ) -> TextMetrics

fn measure_subsequence_for_node( &self, node_id: Option<usize>, text: &AnnotatedString, range: Range<usize>, style: &TextStyle, ) -> TextMetrics

fn measure_line_prefix_widths( &self, text: &AnnotatedString, line_range: Range<usize>, style: &TextStyle, ) -> Option<TextLinePrefixWidths>

fn measure_line_width( &self, text: &AnnotatedString, line_range: Range<usize>, style: &TextStyle, ) -> Option<f32>

fn line_height(&self, text: &AnnotatedString, style: &TextStyle) -> f32

fn glyph_line_box(&self, style: &TextStyle) -> Option<(f32, f32)>

The tight glyph box of a text line inside its line_height slot: (top_offset, height) in logical units, where height is the font’s natural ascent+descent extent and top_offset positions it within the slot (glyph rows are vertically centered). Selection chrome — the highlight, the caret and the finger handles — anchors to THIS box, not the full slot: with a paragraph line height above the natural one the reference shows gaps between highlighted lines and handles riding the glyphs. None means the box fills the slot.

fn line_height_for_node( &self, node_id: Option<usize>, text: &AnnotatedString, style: &TextStyle, ) -> f32

fn measure_with_options( &self, text: &AnnotatedString, style: &TextStyle, options: TextLayoutOptions, max_width: Option<f32>, ) -> TextMetrics

fn measure_with_options_for_node( &self, node_id: Option<usize>, text: &AnnotatedString, style: &TextStyle, options: TextLayoutOptions, max_width: Option<f32>, ) -> TextMetrics

fn prepare_with_options( &self, text: &AnnotatedString, style: &TextStyle, options: TextLayoutOptions, max_width: Option<f32>, ) -> PreparedTextLayout

fn prepare_with_options_for_node( &self, node_id: Option<usize>, text: &AnnotatedString, style: &TextStyle, options: TextLayoutOptions, max_width: Option<f32>, ) -> PreparedTextLayout

fn prepare_with_options_fallback( &self, text: &AnnotatedString, style: &TextStyle, options: TextLayoutOptions, max_width: Option<f32>, ) -> PreparedTextLayout