Struct MeasureCtx 

pub struct MeasureCtx<'a> {
    pub theme: &'a Theme,
    pub text: &'a mut TextEngine,
}

What a widget may consult while measuring itself.

The theme and the fonts, and deliberately nothing else. No bounds, because a widget being asked how big it wants to be must not answer with how big it currently is; no state, because a hovered button is not a wider button; no clock, because a size that changed every frame would be a layout that never settled.

Fields

theme: &'a Theme

The active theme. Sizes come from its metrics.

text: &'a mut TextEngine

Fonts and the glyph cache.

Trait Implementations

impl<'a> Debug for MeasureCtx<'a>

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

Formats the value using the given formatter.