DisplayMetrics class

Derived metrics: the scale factor and logical resolution, plus the intermediate values for diagnostics.

Constructors

DisplayMetrics({required double scale, required double logicalWidth, required double logicalHeight, required double? pxPerMm, required double? viewingDistanceMm, required double visualScale, required double? touchScale, required bool usedFallback})

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

logicalHeight → double

final

logicalPixelAngleDegrees → double?

Visual angle actually subtended by one logical pixel, in degrees, or null if density or distance is unknown. Compare against logicalPixelVisualAngleDegrees; 20/20 acuity is ~0.0167 degrees.

no setter

logicalWidth → double

final

pxPerMm → double?

Derived density, or null if unknown/invalid.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

scale → double

Physical pixels per logical pixel. Integer-snapped or quantized to 8 mantissa bits.

final

touchScale → double?

The touch-target floor, if one was requested and density is known.

final

usedFallback → bool

True if the 96dpi-monitor fallback was used because density or viewing distance were unknown or invalid.

final

viewingDistanceMm → double?

Viewing distance used, or null if unknown.

final

visualScale → double

The perceptual scale before integer snapping / quantization, after DisplayModel.userScaleFactor.

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