Enum ViewportZoom 

pub enum ViewportZoom {
    Fit,
    Factor(f64),
}

What a control outside a DocumentViewport — a toolbar’s Zoom out, its level, its Zoom in — asks the content’s zoom to be.

The viewport applies the request and writes back the Self::Factor it now shows, so the level a person reads follows a gesture (Ctrl+wheel, a pinch, the keyboard) as well as a button.

Variants

Fit

Fit the whole content into the viewport.

Factor(f64)

A factor of the content’s own size.

Implementations

impl ViewportZoom

pub fn percent(self) -> Option<f64>

The level as a whole percentage, for the label beside the buttons (crate::format::percent), or None for Self::Fit.

Trait Implementations

impl Clone for ViewportZoom

fn clone(&self) -> ViewportZoom

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ViewportZoom

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

Formats the value using the given formatter.

impl PartialEq for ViewportZoom

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ViewportZoom

impl StructuralPartialEq for ViewportZoom