Struct StandardImmediatePipeline 

pub struct StandardImmediatePipeline;

The pipeline a window draws with unless another one is installed.

Draws every frame from scratch: the view tree is re-evaluated, laid out and painted, so what is on screen is always a function of current state.

Trait Implementations

impl FramePipeline for StandardImmediatePipeline

fn should_render(&mut self, is_dirty: bool, _metrics: &WindowMetrics) -> bool

Whether the frame the application is about to draw should be drawn.

fn begin_frame(&mut self, window: &mut Window<'_>, cx: &mut App)

Opens the frame: samples the platform window, resets the scratch state the frame rebuilds, and takes ownership of the invalidations this frame owes.

fn evaluate_roots( &mut self, window: &mut Window<'_>, cx: &mut App, ) -> PreparedRoots

Gathers the roots this frame will draw.

fn layout_roots( &mut self, window: &mut Window<'_>, roots: &mut PreparedRoots, cx: &mut App, )

Lays out and prepaints roots, then hit tests the pointer against what they registered.

fn paint_roots( &mut self, window: &mut Window<'_>, roots: PreparedRoots, cx: &mut App, )

Paints roots, in the order they stack.

fn draw_roots(&mut self, window: &mut Window<'_>, cx: &mut App)

Lays out and paints the window’s roots: the window’s own view tree, plus a prompt, drag image or tooltip if the frame has one.

fn finish_frame(&mut self, window: &mut Window<'_>, cx: &mut App)

Closes the painted frame: records the views it touched and hands the platform the input handler the frame asked for.

fn complete_frame( &mut self, window: &mut Window<'_>, cx: &mut App, ) -> Option<FocusId>

Retires the painted frame, swaps it in, and dispatches the focus changes the swap produced.

fn end_frame( &mut self, window: &mut Window<'_>, cx: &mut App, focus_before_listeners: Option<FocusId>, )

Closes the frame out and marks it ready to present.

fn draw(&mut self, window: &mut Window<'_>, cx: &mut App) -> ArenaClearNeeded

Draws one frame by running the phases above in order.