ScaleRamp class

One zone of a ScaleResponse. Maps a normalized progress (0..1 across that zone's drag travel) to a scale factor that ends at end via curve. The zone's start value is implicit (taken from the prior zone's end, or 1.0 at base for the first zone) so consecutive ramps are guaranteed continuous.

Reference frame: end is always relative to baseWidth, never to the previous zone's end. So pastDisplay: ScaleRamp(end: 0.2) means "at full past-display, rect.width = 0.2 × baseWidth" regardless of what inDisplay.end was. This keeps the API declarative — each ramp's end is the absolute target the rect reaches at the end of that zone's drag.

Consequences:

• pastDisplay.end < inDisplay.end → continued shrinking past edge (the usual case).
• pastDisplay.end > inDisplay.end → rect grows back from edge state during past-display drag (valid; sometimes a useful effect).
• end > 1.0 → grows the rect; end < 1.0 → shrinks. Both fine.

Constructors

ScaleRamp({double end = 0.5, Curve curve = Curves.linear})

const

Properties

curve → Curve

Shape of the ramp from the implicit start value to end.

final

end → double

Scale factor at progress=1 of this zone — absolute multiplier on baseWidth (not on the previous zone's end). See class doc.

final

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