WidgetFrameTiming class

Per-frame timing data from the widget layer.

Captures how long each phase of a widget frame takes:

• buildDuration — time spent in BuildOwner.buildScope
• layoutDuration — time spent in render object layout
• paintDuration — time spent in render object paint
• totalDuration — total ElementTree.render() time

See also nocterm's FrameTiming for the reference design.

Constructors

WidgetFrameTiming({required int frameNumber, required Duration buildDuration, required Duration layoutDuration, required Duration paintDuration, required Duration totalDuration, required DateTime timestamp})

const

Properties

buildDuration → Duration

Time spent rebuilding dirty elements.

final

frameNumber → int

Monotonically increasing frame counter within the widget layer.

final

hashCode → int

The hash code for this object.

no setter, inherited

isSlowFrame → bool

Whether this frame exceeded the 16.67ms budget (60fps target).

no setter

layoutDuration → Duration

Time spent in render object layout.

final

paintDuration → Duration

Time spent in render object paint.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

timestamp → DateTime

When this frame was produced.

final

totalDuration → Duration

Total time for the entire ElementTree.render() call.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited