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 original cluster index.

Implementations

impl GlyphInfo

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 GlyphInfo

fn clone(&self) -> GlyphInfo

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GlyphInfo

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

Formats the value using the given formatter.

impl Default for GlyphInfo

fn default() -> GlyphInfo

Returns the “default value” for a type.

impl Zeroable for GlyphInfo

fn zeroed() -> Self

Calls zeroed.

impl Copy for GlyphInfo

impl Pod for GlyphInfo