Struct SizingContext 

pub struct SizingContext {
    pub viewport: Viewport,
    pub container_size: Size<Option<f32>>,
    pub font_size: f32,
    pub root_font_size: Option<f32>,
    pub line_height: f32,
    pub root_line_height: Option<f32>,
    pub calc_arena: Rc<CalcArena>,
}

The sizing context used for length value resolving.

Fields

viewport: Viewport

The viewport for the image renderer.

container_size: Size<Option<f32>>

The nearest query container size (content box) in device pixels.

font_size: f32

The font size in pixels.

root_font_size: Option<f32>

Computed font-size of the root element in device pixels. None before the root has been resolved; readers should fall back to viewport.font_size. https://www.w3.org/TR/css-values-4/#rem

line_height: f32

Pixel basis for the lh unit.

root_line_height: Option<f32>

Pixel basis for the rlh unit; None before root is resolved.

calc_arena: Rc<CalcArena>

The calc arena shared by the current layout tree.

Implementations

impl SizingContext

pub fn rem_basis(&self) -> f32

Device-pixel basis for the rem unit.

pub fn root_line_height_basis(&self) -> f32

pub fn query_container_width(&self) -> f32

pub fn query_container_height(&self) -> f32

Trait Implementations

impl Clone for SizingContext

fn clone(&self) -> SizingContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.