Enum ViewportClass 

pub enum ViewportClass {
    Root,
    Deferred,
    Immediate,
    EmbeddedWindow,
}

The different types of viewports supported by egui.

Variants

Root

The root viewport; i.e. the original window.

Deferred

A viewport run independently from the parent viewport.

This is the preferred type of viewport from a performance perspective.

Create these with crate::Context::show_viewport_deferred.

Immediate

A viewport run inside the parent viewport.

This is the easier type of viewport to use, but it is less performant at it requires both parent and child to repaint if any one of them needs repainting, which effectively produces double work for two viewports, and triple work for three viewports, etc.

Create these with crate::Context::show_viewport_immediate.

EmbeddedWindow

The fallback, when the egui integration doesn’t support viewports, or crate::Context::embed_viewports is set to true.

If you get this, it is because you are already wrapped in a crate::Window inside of the parent viewport.

Trait Implementations

impl Clone for ViewportClass

fn clone(&self) -> ViewportClass

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for ViewportClass

fn default() -> ViewportClass

Returns the “default value” for a type.

impl Hash for ViewportClass

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ViewportClass

fn eq(&self, other: &ViewportClass) -> 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 ViewportClass

impl Eq for ViewportClass

impl StructuralPartialEq for ViewportClass