Struct MagnifyValue 

pub struct MagnifyValue {
    pub magnification: f64,
    pub velocity: f64,
    pub start_anchor: (f64, f64),
    pub start_location: (f64, f64),
    pub time: f64,
}

A MagnifyGesture.Value.

magnify_gesture attaches the gesture and listens to nothing — it was the only kind of gesture the DSL could add but never hear from. The layout is the same shape as the drag’s and read the same way:

  +0   time           Date
  +8   magnification  CGFloat
  +16  velocity       CGFloat
  +24  startAnchor    UnitPoint
  +40  startLocation  CGPoint
  +56  platform       (empty)

Fields

magnification: f64

How far the pinch has scaled, as a multiplier — 1.0 is no change.

velocity: f64

How fast it is scaling, in multiples per second.

start_anchor: (f64, f64)

Where the pinch is centred, in unit space — (0.5, 0.5) is the middle.

start_location: (f64, f64)

Where it began, in the gesture’s coordinate space.

time: f64

Seconds since Apple’s reference date.

Trait Implementations

impl Clone for MagnifyValue

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MagnifyValue

impl Debug for MagnifyValue

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for MagnifyValue

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MagnifyValue