Struct TextureView 

pub struct TextureView { /* private fields */ }

A leaf drawing an externally rendered scene texture — a video frame, a camera preview, a 3D view — by the id its producer registered it under (for a frame source, texture::TextureRegistration::scene_texture_id). texture_view places it with a TextureFit (given the texture’s own extent, .source_size(..)), clips it to .corner_radius(..), and takes an accessible .label(..). A texture view inside a retained subtree keeps that subtree from being replayed from cache — see the widget’s own docs. A declarative view of an externally rendered scene texture. See the module docs.

Implementations

impl TextureView

pub fn fit(self, fit: TextureFit) -> TextureView

How the texture is placed in the box. Needs Self::source_size to keep an aspect ratio; without it every fit fills the box.

pub fn source_size(self, size: Size) -> TextureView

The texture’s own extent (a video’s resolution), which fit keeps the aspect ratio of. Only the ratio matters.

pub fn size(self, size: Size) -> TextureView

A fixed size, clamped into the parent’s constraints. Overrides Self::expand when called after it.

pub fn expand(self) -> TextureView

Fill the parent’s maximum constraints — the default.

pub fn corner_radius(self, radius: f64) -> TextureView

Clip the box to corners of radius; 0.0 (the default) is square.

pub fn label(self, label: impl Into<String>) -> TextureView

An accessible label, contributing a Role::Image semantics node; an unlabelled texture view is decorative and reports nothing.

Trait Implementations

impl Clone for TextureView

fn clone(&self) -> TextureView

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextureView

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

Formats the value using the given formatter.

impl PartialEq for TextureView

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TextureView

impl<State> View<State> for TextureView

where State: 'static,

type Element = TextureWidget

The retained widget this view produces.

fn build(&self, _ctx: &mut BuildCtx<'_>) -> TextureWidget

Materialise a fresh widget for this view.

fn rebuild( &self, prev: &TextureView, element: &mut TextureWidget, _ctx: &mut BuildCtx<'_>, ) -> ChangeFlags

Reconcile prev (the previous view of the same type) against the live element, mutating it in place and reporting what changed.

fn teardown(&self, _element: &mut Self::Element, _ctx: &mut BuildCtx<'_>)

Tear down element when this view is being removed.

fn message(&self, _element: &mut Self::Element, _state: &mut State)

Deliver an event message to this view, mutating application state.