Struct Scheduler

pub struct Scheduler {
    pub needs_layout: bool,
    pub needs_paint: bool,
}

Pending layout and paint work for a frame.

Layout implies paint when marked through Self::mark_layout, but the public fields permit callers to represent any combination. Default equals Self::clear.

Examples

use ailloli_ui_runtime::app::Scheduler;
let scheduler = Scheduler::default();
assert!(!scheduler.needs_layout && !scheduler.needs_paint);

Fields

needs_layout: bool

Whether retained layout should be recomputed.

needs_paint: bool

Whether a new scene should be painted.

Implementations

impl Scheduler

Provides the operations defined for Scheduler.

pub fn mark_layout(&mut self)

Marks both layout and its required follow-up paint as pending.

Calling this repeatedly is idempotent.

Examples

use ailloli_ui_runtime::app::Scheduler;
let mut scheduler = Scheduler::default();
scheduler.mark_layout();
assert!(scheduler.needs_layout && scheduler.needs_paint);

pub fn mark_paint(&mut self)

Marks paint pending without changing the layout flag.

Examples

use ailloli_ui_runtime::app::Scheduler;
let mut scheduler = Scheduler::default();
scheduler.mark_paint();
assert!(!scheduler.needs_layout && scheduler.needs_paint);

pub fn clear(&mut self)

Clears both pending-work flags.

Examples

use ailloli_ui_runtime::app::Scheduler;
let mut scheduler = Scheduler { needs_layout: true, needs_paint: true };
scheduler.clear();
assert_eq!((scheduler.needs_layout, scheduler.needs_paint), (false, false));

Trait Implementations

impl Clone for Scheduler

fn clone(&self) -> Scheduler

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Scheduler

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

Formats the value using the given formatter.

impl Default for Scheduler

fn default() -> Scheduler

Returns the “default value” for a type.