Struct egui::context::ContextImpl

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struct ContextImpl {
Show 16 fields fonts: BTreeMap<OrderedFloat<f32>, Fonts>, font_definitions: FontDefinitions, memory: Memory, animation_manager: AnimationManager, plugins: Plugins, tex_manager: WrappedTextureManager, new_zoom_factor: Option<f32>, os: OperatingSystem, viewport_stack: Vec<ViewportIdPair>, last_viewport: ViewportId, paint_stats: PaintStats, request_repaint_callback: Option<Box<dyn Fn(RequestRepaintInfo) + Send + Sync>>, viewport_parents: ViewportIdMap<ViewportId>, viewports: ViewportIdMap<ViewportState>, embed_viewports: bool, loaders: Arc<Loaders>,
}

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§fonts: BTreeMap<OrderedFloat<f32>, Fonts>

Since we could have multiple viewports across multiple monitors with different pixels_per_point, we need a Fonts instance for each unique pixels_per_point. This is because the Fonts depend on pixels_per_point for the font atlas as well as kerning, font sizes, etc.

§font_definitions: FontDefinitions§memory: Memory§animation_manager: AnimationManager§plugins: Plugins§tex_manager: WrappedTextureManager

All viewports share the same texture manager and texture namespace.

In all viewports, TextureId::default is special, and points to the font atlas. The font-atlas texture may be different across viewports, as they may have different pixels_per_point, so we do special book-keeping for that. See https://github.com/emilk/egui/issues/3664.

§new_zoom_factor: Option<f32>

Set during the pass, becomes active at the start of the next pass.

§os: OperatingSystem§viewport_stack: Vec<ViewportIdPair>

How deeply nested are we?

§last_viewport: ViewportId

What is the last viewport rendered?

§paint_stats: PaintStats§request_repaint_callback: Option<Box<dyn Fn(RequestRepaintInfo) + Send + Sync>>§viewport_parents: ViewportIdMap<ViewportId>§viewports: ViewportIdMap<ViewportState>§embed_viewports: bool§loaders: Arc<Loaders>

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impl ContextImpl

Repaint-logic

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fn begin_pass_repaint_logic(&mut self, viewport_id: ViewportId)

This is where we update the repaint logic.

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fn request_repaint(&mut self, viewport_id: ViewportId, cause: RepaintCause)

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fn request_repaint_after( &mut self, delay: Duration, viewport_id: ViewportId, cause: RepaintCause, )

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fn requested_immediate_repaint_prev_pass( &self, viewport_id: &ViewportId, ) -> bool

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fn has_requested_repaint(&self, viewport_id: &ViewportId) -> bool

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impl ContextImpl

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fn begin_pass(&mut self, new_raw_input: RawInput)

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fn update_fonts_mut(&mut self)

Load fonts unless already loaded.

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fn pixels_per_point(&mut self) -> f32

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pub(crate) fn viewport_id(&self) -> ViewportId

Return the ViewportId of the current viewport.

For the root viewport this will return ViewportId::ROOT.

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pub(crate) fn parent_viewport_id(&self) -> ViewportId

Return the ViewportId of his parent.

For the root viewport this will return ViewportId::ROOT.

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fn all_viewport_ids(&self) -> ViewportIdSet

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pub(crate) fn viewport(&mut self) -> &mut ViewportState

The current active viewport

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fn viewport_for(&mut self, viewport_id: ViewportId) -> &mut ViewportState

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impl ContextImpl

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fn end_pass(&mut self) -> FullOutput

Trait Implementations§

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impl Default for ContextImpl

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fn default() -> ContextImpl

Returns the “default value” for a type. Read more

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where T: 'static + ?Sized,

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fn borrow_mut(&mut self) -> &mut T

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type Error = Infallible

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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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