Struct rustybuzz::GlyphInfo

#[repr(C)]
pub struct GlyphInfo {
    pub glyph_id: u32,
    pub cluster: u32,
    /* private fields */
}

A glyph info.

Fields

glyph_id: u32

A selected glyph.

Guarantee to be <= u16::MAX.

cluster: u32

An index to the start of the grapheme cluster in the original string.

Read more on clusters.

Implementations

impl hb_glyph_info_t

pub fn unsafe_to_break(&self) -> bool

Indicates that if input text is broken at the beginning of the cluster this glyph is part of, then both sides need to be re-shaped, as the result might be different.

On the flip side, it means that when this flag is not present, then it’s safe to break the glyph-run at the beginning of this cluster, and the two sides represent the exact same result one would get if breaking input text at the beginning of this cluster and shaping the two sides separately. This can be used to optimize paragraph layout, by avoiding re-shaping of each line after line-breaking, or limiting the reshaping to a small piece around the breaking point only.

Trait Implementations

impl Clone for hb_glyph_info_t

fn clone(&self) -> hb_glyph_info_t

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for hb_glyph_info_t

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

Formats the value using the given formatter.

impl Default for hb_glyph_info_t

fn default() -> hb_glyph_info_t

Returns the “default value” for a type.

impl Zeroable for hb_glyph_info_t

fn zeroed() -> Self

Calls zeroed.

impl Copy for hb_glyph_info_t

impl Pod for hb_glyph_info_t