Struct TextTexture 

pub struct TextTexture {
    pub texture: HostTexture,
    pub layout_x: f32,
    pub layout_y: f32,
    pub layout_width: f32,
    pub layout_height: f32,
    pub first_baseline: f32,
    pub ascent: f32,
    pub descent: f32,
    pub line_count: u32,
}

Layout facts attached to a host-rasterized text texture.

The compositor treats Self::texture like any image texture; the metrics serve placement, cache validation and cross-host tests.

Fields

texture: HostTexture

Generic texture identity and pixel declaration.

layout_x: f32

The layout box’s left edge in the texture, in pixels. The same margin is added on both sides for overhanging ink.

layout_y: f32

The layout box’s top edge in the texture, in pixels, with the same margin below.

layout_width: f32

Logical layout width before integer pixel rounding.

layout_height: f32

Logical layout height before integer pixel rounding.

first_baseline: f32

Distance from the layout box’s top edge to the first alphabetic baseline.

ascent: f32

Maximum ink extent above a baseline, at least the nominal ascent.

descent: f32

Maximum ink extent below a baseline, at least the nominal descent.

line_count: u32

Number of laid-out lines.

Implementations

impl TextTexture

pub fn is_valid(&self) -> bool

Checks dimensions and finite layout metrics at the public boundary.

Trait Implementations

impl Clone for TextTexture

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextTexture

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

Formats the value using the given formatter.

impl PartialEq for TextTexture

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TextTexture