Struct RenderEngine

pub struct RenderEngine { /* private fields */ }

A mapping of Element to Renderers used to delegate rendering of generic Segments via their Element. Only one Renderer per type is allowed in the current implementation.

Implementations

impl RenderEngine

pub fn new() -> RenderEngine

Creates an empty RenderEngine.

pub fn add_renderer<R: Renderer + 'static>(&mut self, renderer: R)

Adds a Renderer to this RenderEngine, replacing any existing Renderer for the corresponding Renderer::Element.

pub fn can_render(&self, element: &dyn Element) -> bool

Determines if this RenderEngine can render a given &dyn Element. (i.e. whether it has a mapped renderer for the given &dyn Element)

This checks not only the given &dyn Element, but also any types it wraps.

pub fn can_render_specific(&self, element: &dyn Element) -> bool

Determines if this RenderEngine can render a given &dyn Element. Only checks the given type, ignoring any wrapped types (unlike Self::can_render).

pub fn render( &self, segment: &Segment, context: CompositionContext<'_>, ) -> Option<Result<Vec<Segment>>>

Renders a Element over a given time range with supplied context, delegating to Renderers mapped to its type and wrapped types if any. If no mapped Renderer for the type or wrapped types exists, None is returned.

Trait Implementations

impl<R, S> Add<R> for RenderEngine

where R: Renderer<Element = S> + 'static, S: Element,

type Output = RenderEngine

The resulting type after applying the + operator.

fn add(self, rhs: R) -> Self::Output

Performs the + operation.

impl Add for RenderEngine

type Output = RenderEngine

The resulting type after applying the + operator.

fn add(self, rhs: RenderEngine) -> Self::Output

Performs the + operation.

impl Debug for RenderEngine

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

Formats the value using the given formatter.

impl Default for RenderEngine

fn default() -> RenderEngine

Returns the “default value” for a type.

impl From<RenderEngine> for Composer

fn from(value: RenderEngine) -> Self

Converts to this type from the input type.