Struct FramesWithText 

pub struct FramesWithText<'a> { /* private fields */ }

A host’s frame provider together with its text store: frames come from the one and text from the other.

Implementations

impl<'a> FramesWithText<'a>

pub fn new(frames: &'a dyn FrameProvider, texts: &'a TextTextures) -> Self

frames with the texts texts holds.

Trait Implementations

impl FrameProvider for FramesWithText<'_>

fn texture_for( &self, source: &SourceId, time: MediaTime, ) -> Option<SourceView<'_>>

Returns a texture for source at the requested source timestamp.

fn pending_source_work( &self, source: &SourceId, time: MediaTime, ) -> Option<&PendingSourceWork>

Returns presentation work that has not yet been submitted for this physical source texture. The default covers already-ready textures.

fn source_key( &self, source: &SourceId, time: MediaTime, ) -> Option<RenderCacheKey>

A key for the texture Self::texture_for returns: the host’s promise that the texture’s pixels depend on nothing the key leaves out: the source’s content, the frame, and how it was decoded, converted, and presented. Pictures drawn from keyed sources can be kept and reused (see alpha2_render::Renderer::set_result_cache_budget); the default, no key, keeps nothing drawn from the source.

fn text(&self, key: u64) -> Option<TextTexture<'_>>

Returns the text crate::text_key names, a caption or a text generator prepared by the host’s crate::TextTextures. The default holds none: a frame that shows text then fails with RenderError::MissingText.

fn layout(&self, key: u128) -> Option<Arc<PreparedLayout>>

Returns the layout crate::layout_key names, resolved and drawn by the host’s crate::TextTextures, whose texts Self::text lends. The default holds none: a frame that shows a layout then fails with RenderError::MissingText.