DisplayModel class
Inputs describing a physical display. Call compute to derive DisplayMetrics.
Physical size may be given as widthMm/heightMm (e.g. from EDID) or as diagonalInches (e.g. from a spec sheet). If neither supplies a finite, positive density, the model falls back to assuming a 96dpi desktop monitor. Valid densities are not limited: a density cutoff would make small changes in physical size abruptly switch between calculated and fallback scales.
Constructors
- DisplayModel({required int widthPx, required int heightPx, double? widthMm, double? heightMm, double? diagonalInches, DisplayUsage? usage, double? viewingDistanceMm, double userScaleFactor = 1.0, TouchTargets? touch, double integerSnapTolerance = 0.02})
Properties
- diagonalInches → double?
-
Alternative to widthMm/heightMm: diagonal in inches, per spec sheet.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- heightMm → double?
-
final
- heightPx → int
-
final
- integerSnapTolerance → double
-
Snap scale to a nearby integer within this relative tolerance (e.g.
1.985 -> 2.0). Bitmap assets and 1px hairlines render dramatically
crisper at integer scales, and a ~2% size change is imperceptible.
final
- pxPerMm → double?
-
Pixel density in px/mm, or null if unknown or invalid.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- touch → TouchTargets?
-
If non-null, enforce a minimum physical touch-target size.
final
- usage → DisplayUsage?
-
Usage class supplying a default viewing distance.
final
- userScaleFactor → double
-
User preference multiplier, applied last. Callers should report the
reduced logical resolution honestly so layout reflows rather than
zoom-cropping.
final
- viewingDistanceMm → double?
-
Measured/configured viewing distance; overrides usage if set.
final
- widthMm → double?
-
Physical width/height of the display area, in millimeters, if known.
final
- widthPx → int
-
final
Methods
-
compute(
) → DisplayMetrics -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited