Struct Viewport 

pub struct Viewport {
    pub width: u32,
    pub height: u32,
    pub device_scale_factor: Option<f64>,
    pub emulating_mobile: bool,
    pub is_landscape: bool,
    pub has_touch: bool,
}

Page viewport configuration used when emulating screen metrics.

Width/height are in CSS pixels. Optional fields allow tuning device pixel ratio, mobile emulation, orientation, and touch support.

Fields

width: u32

CSS pixel width of the viewport (layout viewport, not device pixels).

height: u32

CSS pixel height of the viewport.

device_scale_factor: Option<f64>

Device pixel ratio (DPR). If None, the browser default is used. Common values: 1.0 for standard displays, 2.0 for “Retina”-like.

emulating_mobile: bool

Simulate a mobile device (affects UA hints/metrics in some engines). Set to true to enable mobile-specific layout behavior.

is_landscape: bool

Treat the viewport as landscape (true) or portrait (false).

has_touch: bool

Advertise touch support (affects input/event capability). Set to true to enable touch-enabled emulation.

Trait Implementations

impl Clone for Viewport

fn clone(&self) -> Viewport

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Viewport

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

Formats the value using the given formatter.

impl Default for Viewport

fn default() -> Self

Default viewport size.

impl PartialEq for Viewport

fn eq(&self, other: &Viewport) -> 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 StructuralPartialEq for Viewport