Elevation class abstract

🕴 Elevation double => <BoxShadow>[]

Recreation of Material.elevation utilizing Flutter's top-level Map<int, List<BoxShadow> kElevationToShadow.

That map only contains values for

key: 0, 1, 2, 3, 4, 6, 8, 9, 12, 16, 24

Elevation's decoration methods will utilize the largest valid key that is at least equal to this elevation as well as the next highest available key, and BoxShadow.lerpList the two (where t for lerpList is the percentage between these two keys that elevation sits ).

Requests in range 24 < elevation <= 100

lerp between established kElevationToShadow.last and Elevation-created _kArbitraryElevation100.

---

Left null, color defaults to three different Colors for three different BoxShadows, as seen in kElevationToShadow:

const Color _kKeyUmbraOpacity = Color(0x33000000); // opacity = 0.2
const Color _kKeyPenumbraOpacity = Color(0x24000000); // opacity = 0.14
const Color _kAmbientShadowOpacity = Color(0x1F000000); // opacity = 0.12

• Providing a color will maintain these opacities in the resultant List<BoxShadow>.
  • Set preserveOpacity false to use the passed color's opacity.

Constructors

Elevation()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

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

Static Methods

asBoxDecoration(double elevation, {Color? color, bool preserveOpacity = true}) → BoxDecoration

kElevationToShadow only contains values for

asBoxShadows(double elevation, {Color? color, bool preserveOpacity = true}) → List<BoxShadow>

kElevationToShadow only contains values for