Struct PinchEvent 

pub struct PinchEvent {
    pub position: Point<Pixels>,
    pub delta: f32,
    pub modifiers: Modifiers,
    pub phase: TouchPhase,
}

A pinch-to-zoom gesture, typically from a trackpad.

Sent to InteractiveElement::on_pinch listeners. Pinch recognition from touch input is not implemented yet, so pinch events come from the platform.

Dereferences to Modifiers.

Fields

position: Point<Pixels>

The center of the pinch in window coordinates, in logical pixels.

delta: f32

The change in scale since the previous event. 0.1 is a 10% zoom in and -0.1 is a 10% zoom out.

modifiers: Modifiers

The modifier keys held during the pinch.

phase: TouchPhase

Where this event falls in the pinch gesture.

Methods from Deref<Target = Modifiers>

pub fn modified(&self) -> bool

Returns whether any modifier key is held.

pub fn secondary(&self) -> bool

Returns whether the platform’s shortcut modifier is held.

This is platform (command) on macOS and control on Linux and Windows. Use it for shortcuts such as save and copy, so that they follow each platform’s convention.

Examples

assert!(Modifiers::secondary_key().secondary());
assert!(!Modifiers::shift().secondary());

pub fn number_of_modifiers(&self) -> u8

Returns how many modifier keys are held.

pub fn is_subset_of(&self, other: &Modifiers) -> bool

Returns whether every modifier held in self is also held in other.

Modifiers::none() is a subset of every value, and no value is a subset of none() unless it is none() itself.

Examples

let ctrl_shift = Modifiers::control_shift();
assert!(Modifiers::shift().is_subset_of(&ctrl_shift));
assert!(!Modifiers::alt().is_subset_of(&ctrl_shift));

Trait Implementations

impl Clone for PinchEvent

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PinchEvent

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

Formats the value using the given formatter.

impl Default for PinchEvent

fn default() -> Self

Returns the “default value” for a type.

impl Deref for PinchEvent

type Target = Modifiers

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl GestureEvent for PinchEvent

impl InputEvent for PinchEvent

fn to_platform_input(self) -> PlatformInput

Converts this event into the PlatformInput variant that wraps it.

impl MouseEvent for PinchEvent