Struct PointerInteractions 

pub struct PointerInteractions {
    pub application_supports_indirect_input_events: Option<bool>,
}

Pointer Interactions

Fields

application_supports_indirect_input_events: Option<bool>

A Boolean value indicating that the app generally supports indirect input mechanisms.

If this key is not present or returns NO:

• When the user clicks an indirect pointing device, UIKit generates a UITouch of type UITouch.TouchType.direct.
• When pinching or rotating using an indirect touch surface, UIKit creates touches a fixed distance apart that simulate the gesture on the indirect touch surface.
• Because these are normal UITouch events, they may incidentally activate other gesture recognizers

If the key is present and returns YES:

• When the user clicks an indirect pointing device, UIKit generates a UITouch of type UITouch.TouchType.indirectPointer.
• When pinching or rotating using an indirect touch surface, UIKit drives UIPinchGestureRecognizer and UIRotationGestureRecognizer with an event of type UIEvent.EventType.transform.
• Currently, only certain prepackaged gestures in UIKit, like UIPinchGestureRecognizer and UIRotationGestureRecognizer, are capable of handling this event. Other gestures may be added to this list in future releases.
• Gestures that may have worked previously with the simulated touches no longer work.
• Be careful with certain UIGestureRecognizer APIs when gestures are driven by events of type UIEvent.EventType.scroll or UIEvent.EventType.transform.numberOfTouches returns 0, andlocation(ofTouch:in:) raises an exception because there are no touches driving these gestures with those events.

For the case when exceptions might be raised, use either shouldReceive(:) or the delegate call of gestureRecognizer(:shouldReceive:) to determine that gesture recognizers are acting on a non-touch-based event.

Important

UIApplicationSupportsIndirectInputEvents is a compatibility affordance to ease the adoption of indirect input for a UIKit application. In a future release, this new behavior will become the default and this key will no longer be consulted.

Availability

• iOS 13.4+

Framework

• UIKit

Trait Implementations

impl Clone for PointerInteractions

fn clone(&self) -> PointerInteractions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PointerInteractions

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

Formats the value using the given formatter.

impl Default for PointerInteractions

fn default() -> PointerInteractions

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PointerInteractions

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PointerInteractions

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for PointerInteractions

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for PointerInteractions

impl StructuralPartialEq for PointerInteractions