Struct HMCameraView

#[repr(C)]
pub struct HMCameraView { /* private fields */ }

Available on crate features HMCameraView and objc2-ui-kit only.

This view can render a camera source.

See also Apple’s documentation

Implementations

impl HMCameraView

pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>

pub unsafe fn cameraSource(&self) -> Option<Retained<HMCameraSource>>

Available on crate feature HMCameraSource only.

Represents the camera source.

pub unsafe fn setCameraSource(&self, camera_source: Option<&HMCameraSource>)

Available on crate feature HMCameraSource only.

Setter for cameraSource.

impl HMCameraView

Methods declared on superclass UIView.

pub unsafe fn initWithFrame( this: Allocated<Self>, frame: CGRect, ) -> Retained<Self>

Available on crate feature objc2-core-foundation only.

pub unsafe fn initWithCoder( this: Allocated<Self>, coder: &NSCoder, ) -> Option<Retained<Self>>

impl HMCameraView

Methods declared on superclass NSObject.

pub unsafe fn new(mtm: MainThreadMarker) -> Retained<Self>

Methods from Deref<Target = UIView>

pub unsafe fn isUserInteractionEnabled(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setUserInteractionEnabled(&self, user_interaction_enabled: bool)

Available on crate feature UIResponder only.

Setter for isUserInteractionEnabled.

pub unsafe fn tag(&self) -> isize

Available on crate feature UIResponder only.

pub unsafe fn setTag(&self, tag: isize)

Available on crate feature UIResponder only.

Setter for tag.

pub unsafe fn canBecomeFocused(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn isFocused(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn focusGroupIdentifier(&self) -> Option<Retained<NSString>>

Available on crate feature UIResponder only.

The identifier of the focus group that this view belongs to. If this is nil, subviews inherit their superview’s focus group.

pub unsafe fn setFocusGroupIdentifier( &self, focus_group_identifier: Option<&NSString>, )

Available on crate feature UIResponder only.

Setter for focusGroupIdentifier.

pub unsafe fn focusGroupPriority(&self) -> isize

Available on crate features UIResponder and UIFocus only.

The priority this item has in its focus group. The higher the priority, the more likely it is to get picked when focus moves into this group. Note: this method can only be used to increase an item’s priority, not decrease it. For example if an item is currently selected, the actual priority of this item will be determined by MAX(focusGroupPriority, UIFocusGroupPrioritySelected).

pub unsafe fn setFocusGroupPriority(&self, focus_group_priority: isize)

Available on crate features UIResponder and UIFocus only.

Setter for focusGroupPriority.

pub unsafe fn semanticContentAttribute(&self) -> UISemanticContentAttribute

Available on crate feature UIResponder only.

pub unsafe fn setSemanticContentAttribute( &self, semantic_content_attribute: UISemanticContentAttribute, )

Available on crate feature UIResponder only.

Setter for semanticContentAttribute.

pub unsafe fn isMultipleTouchEnabled(&self) -> bool

Available on crate feature UIResponder only.

pub fn setMultipleTouchEnabled(&self, multiple_touch_enabled: bool)

Available on crate feature UIResponder only.

Setter for isMultipleTouchEnabled.

pub unsafe fn isExclusiveTouch(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setExclusiveTouch(&self, exclusive_touch: bool)

Available on crate feature UIResponder only.

Setter for isExclusiveTouch.

pub unsafe fn autoresizesSubviews(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setAutoresizesSubviews(&self, autoresizes_subviews: bool)

Available on crate feature UIResponder only.

Setter for autoresizesSubviews.

pub unsafe fn autoresizingMask(&self) -> UIViewAutoresizing

Available on crate feature UIResponder only.

pub unsafe fn setAutoresizingMask(&self, autoresizing_mask: UIViewAutoresizing)

Available on crate feature UIResponder only.

Setter for autoresizingMask.

pub unsafe fn sizeToFit(&self)

Available on crate feature UIResponder only.

pub fn superview(&self) -> Option<Retained<UIView>>

Available on crate feature UIResponder only.

pub fn subviews(&self) -> Retained<NSArray<UIView>>

Available on crate feature UIResponder only.

pub unsafe fn removeFromSuperview(&self)

Available on crate feature UIResponder only.

pub unsafe fn insertSubview_atIndex(&self, view: &UIView, index: isize)

Available on crate feature UIResponder only.

pub unsafe fn exchangeSubviewAtIndex_withSubviewAtIndex( &self, index1: isize, index2: isize, )

Available on crate feature UIResponder only.

pub unsafe fn addSubview(&self, view: &UIView)

Available on crate feature UIResponder only.

pub unsafe fn insertSubview_belowSubview( &self, view: &UIView, sibling_subview: &UIView, )

Available on crate feature UIResponder only.

pub unsafe fn insertSubview_aboveSubview( &self, view: &UIView, sibling_subview: &UIView, )

Available on crate feature UIResponder only.

pub unsafe fn bringSubviewToFront(&self, view: &UIView)

Available on crate feature UIResponder only.

pub unsafe fn sendSubviewToBack(&self, view: &UIView)

Available on crate feature UIResponder only.

pub unsafe fn didAddSubview(&self, subview: &UIView)

Available on crate feature UIResponder only.

pub unsafe fn willRemoveSubview(&self, subview: &UIView)

Available on crate feature UIResponder only.

pub unsafe fn willMoveToSuperview(&self, new_superview: Option<&UIView>)

Available on crate feature UIResponder only.

pub unsafe fn didMoveToSuperview(&self)

Available on crate feature UIResponder only.

pub unsafe fn didMoveToWindow(&self)

Available on crate feature UIResponder only.

pub unsafe fn isDescendantOfView(&self, view: &UIView) -> bool

Available on crate feature UIResponder only.

pub unsafe fn viewWithTag(&self, tag: isize) -> Option<Retained<UIView>>

Available on crate feature UIResponder only.

pub unsafe fn setNeedsLayout(&self)

Available on crate feature UIResponder only.

pub unsafe fn layoutIfNeeded(&self)

Available on crate feature UIResponder only.

pub unsafe fn layoutSubviews(&self)

Available on crate feature UIResponder only.

pub unsafe fn preservesSuperviewLayoutMargins(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setPreservesSuperviewLayoutMargins( &self, preserves_superview_layout_margins: bool, )

Available on crate feature UIResponder only.

Setter for preservesSuperviewLayoutMargins.

pub unsafe fn insetsLayoutMarginsFromSafeArea(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setInsetsLayoutMarginsFromSafeArea( &self, insets_layout_margins_from_safe_area: bool, )

Available on crate feature UIResponder only.

Setter for insetsLayoutMarginsFromSafeArea.

pub unsafe fn layoutMarginsDidChange(&self)

Available on crate feature UIResponder only.

pub unsafe fn safeAreaInsetsDidChange(&self)

Available on crate feature UIResponder only.

pub fn setNeedsDisplay(&self)

Available on crate feature UIResponder only.

pub unsafe fn clipsToBounds(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setClipsToBounds(&self, clips_to_bounds: bool)

Available on crate feature UIResponder only.

Setter for clipsToBounds.

pub unsafe fn isOpaque(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setOpaque(&self, opaque: bool)

Available on crate feature UIResponder only.

Setter for isOpaque.

pub unsafe fn clearsContextBeforeDrawing(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setClearsContextBeforeDrawing( &self, clears_context_before_drawing: bool, )

Available on crate feature UIResponder only.

Setter for clearsContextBeforeDrawing.

pub fn isHidden(&self) -> bool

Available on crate feature UIResponder only.

pub fn setHidden(&self, hidden: bool)

Available on crate feature UIResponder only.

Setter for isHidden.

pub unsafe fn contentMode(&self) -> UIViewContentMode

Available on crate feature UIResponder only.

pub unsafe fn setContentMode(&self, content_mode: UIViewContentMode)

Available on crate feature UIResponder only.

Setter for contentMode.

pub unsafe fn maskView(&self) -> Option<Retained<UIView>>

Available on crate feature UIResponder only.

pub unsafe fn setMaskView(&self, mask_view: Option<&UIView>)

Available on crate feature UIResponder only.

Setter for maskView.

pub unsafe fn tintAdjustmentMode(&self) -> UIViewTintAdjustmentMode

Available on crate feature UIResponder only.

pub unsafe fn setTintAdjustmentMode( &self, tint_adjustment_mode: UIViewTintAdjustmentMode, )

Available on crate feature UIResponder only.

Setter for tintAdjustmentMode.

pub unsafe fn tintColorDidChange(&self)

Available on crate feature UIResponder only.

pub unsafe fn updateConstraintsIfNeeded(&self)

Available on crate feature UIResponder only.

pub unsafe fn updateConstraints(&self)

Available on crate feature UIResponder only.

pub unsafe fn needsUpdateConstraints(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setNeedsUpdateConstraints(&self)

Available on crate feature UIResponder only.

pub unsafe fn translatesAutoresizingMaskIntoConstraints(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn setTranslatesAutoresizingMaskIntoConstraints( &self, translates_autoresizing_mask_into_constraints: bool, )

Available on crate feature UIResponder only.

Setter for translatesAutoresizingMaskIntoConstraints.

pub unsafe fn viewForBaselineLayout(&self) -> Retained<UIView>

👎Deprecated: Override -viewForFirstBaselineLayout or -viewForLastBaselineLayout as appropriate, instead

Available on crate feature UIResponder only.

pub unsafe fn viewForFirstBaselineLayout(&self) -> Retained<UIView>

Available on crate feature UIResponder only.

pub unsafe fn viewForLastBaselineLayout(&self) -> Retained<UIView>

Available on crate feature UIResponder only.

pub unsafe fn invalidateIntrinsicContentSize(&self)

Available on crate feature UIResponder only.

pub unsafe fn hasAmbiguousLayout(&self) -> bool

Available on crate feature UIResponder only.

pub unsafe fn exerciseAmbiguityInLayout(&self)

Available on crate feature UIResponder only.

pub unsafe fn restorationIdentifier(&self) -> Option<Retained<NSString>>

Available on crate feature UIResponder only.

pub unsafe fn setRestorationIdentifier( &self, restoration_identifier: Option<&NSString>, )

Available on crate feature UIResponder only.

Setter for restorationIdentifier.

pub unsafe fn encodeRestorableStateWithCoder(&self, coder: &NSCoder)

Available on crate feature UIResponder only.

pub unsafe fn decodeRestorableStateWithCoder(&self, coder: &NSCoder)

Available on crate feature UIResponder only.

pub unsafe fn snapshotViewAfterScreenUpdates( &self, after_updates: bool, ) -> Option<Retained<UIView>>

Available on crate feature UIResponder only.

pub unsafe fn appliedContentSizeCategoryLimitsDescription( &self, ) -> Retained<NSString>

Available on crate feature UIResponder only.

Will return a string with a log of all the superviews of this view, alongside with what content size category each view has and if that view has limits applied. This is for debugging purposes only.

pub unsafe fn traitOverrides( &self, ) -> Retained<ProtocolObject<dyn UITraitOverrides>>

Available on crate features UIResponder and UITraitCollection only.

pub unsafe fn updateTraitsIfNeeded(&self)

Available on crate feature UIResponder only.

Forces an immediate trait update for this view (and its view controller, if applicable) and any subviews, including any view controllers or views in its subtree. Any trait change callbacks are sent synchronously.

Methods from Deref<Target = UIResponder>

pub unsafe fn nextResponder(&self) -> Option<Retained<UIResponder>>

pub unsafe fn canBecomeFirstResponder(&self) -> bool

pub unsafe fn becomeFirstResponder(&self) -> bool

pub unsafe fn canResignFirstResponder(&self) -> bool

pub unsafe fn resignFirstResponder(&self) -> bool

pub unsafe fn isFirstResponder(&self) -> bool

pub unsafe fn canPerformAction_withSender( &self, action: Sel, sender: Option<&AnyObject>, ) -> bool

pub unsafe fn targetForAction_withSender( &self, action: Sel, sender: Option<&AnyObject>, ) -> Option<Retained<AnyObject>>

pub unsafe fn undoManager(&self) -> Option<Retained<NSUndoManager>>

pub unsafe fn editingInteractionConfiguration( &self, ) -> UIEditingInteractionConfiguration

pub unsafe fn inputView(&self) -> Option<Retained<UIView>>

Available on crate feature UIView only.

pub unsafe fn inputAccessoryView(&self) -> Option<Retained<UIView>>

Available on crate feature UIView only.

pub unsafe fn textInputContextIdentifier(&self) -> Option<Retained<NSString>>

pub unsafe fn reloadInputViews(&self)

pub unsafe fn userActivity(&self) -> Option<Retained<NSUserActivity>>

pub unsafe fn setUserActivity(&self, user_activity: Option<&NSUserActivity>)

Setter for userActivity.

pub unsafe fn updateUserActivityState(&self, activity: &NSUserActivity)

pub unsafe fn restoreUserActivityState(&self, activity: &NSUserActivity)

pub unsafe fn captureTextFromCamera(&self, sender: Option<&AnyObject>)

Methods from Deref<Target = NSObject>

pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !

Handle messages the object doesn’t recognize.

See Apple’s documentation for details.

Methods from Deref<Target = AnyObject>

pub fn class(&self) -> &'static AnyClass

Dynamically find the class of this object.

Example

Check that an instance of NSObject has the precise class NSObject.

use objc2::ClassType;
use objc2::runtime::NSObject;

let obj = NSObject::new();
assert_eq!(obj.class(), NSObject::class());

pub unsafe fn get_ivar<T>(&self, name: &str) -> &T

where T: Encode,

👎Deprecated: this is difficult to use correctly, use Ivar::load instead.

Use Ivar::load instead.

Safety

The object must have an instance variable with the given name, and it must be of type T.

See Ivar::load_ptr for details surrounding this.

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: DowncastTarget,

Attempt to downcast the object to a class of type T.

This is the reference-variant. Use Retained::downcast if you want to convert a retained object to another type.

Mutable classes

Some classes have immutable and mutable variants, such as NSString and NSMutableString.

When some Objective-C API signature says it gives you an immutable class, it generally expects you to not mutate that, even though it may technically be mutable “under the hood”.

So using this method to convert a NSString to a NSMutableString, while not unsound, is generally frowned upon unless you created the string yourself, or the API explicitly documents the string to be mutable.

See Apple’s documentation on mutability and on isKindOfClass: for more details.

Generic classes

Objective-C generics are called “lightweight generics”, and that’s because they aren’t exposed in the runtime. This makes it impossible to safely downcast to generic collections, so this is disallowed by this method.

You can, however, safely downcast to generic collections where all the type-parameters are AnyObject.

Panics

This works internally by calling isKindOfClass:. That means that the object must have the instance method of that name, and an exception will be thrown (if CoreFoundation is linked) or the process will abort if that is not the case. In the vast majority of cases, you don’t need to worry about this, since both root objects NSObject and NSProxy implement this method.

Examples

Cast an NSString back and forth from NSObject.

use objc2::rc::Retained;
use objc2_foundation::{NSObject, NSString};

let obj: Retained<NSObject> = NSString::new().into_super();
let string = obj.downcast_ref::<NSString>().unwrap();
// Or with `downcast`, if we do not need the object afterwards
let string = obj.downcast::<NSString>().unwrap();

Try (and fail) to cast an NSObject to an NSString.

use objc2_foundation::{NSObject, NSString};

let obj = NSObject::new();
assert!(obj.downcast_ref::<NSString>().is_none());

Try to cast to an array of strings.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);
// This is invalid and doesn't type check.
let arr = arr.downcast_ref::<NSArray<NSString>>();

This fails to compile, since it would require enumerating over the array to ensure that each element is of the desired type, which is a performance pitfall.

Downcast when processing each element instead.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);

for elem in arr {
    if let Some(data) = elem.downcast_ref::<NSString>() {
        // handle `data`
    }
}

Trait Implementations

impl AsRef<AnyObject> for HMCameraView

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<HMCameraView> for HMCameraView

fn as_ref(&self) -> &Self

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSObject> for HMCameraView

fn as_ref(&self) -> &NSObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<UIResponder> for HMCameraView

fn as_ref(&self) -> &UIResponder

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<UIView> for HMCameraView

fn as_ref(&self) -> &UIView

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<AnyObject> for HMCameraView

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<NSObject> for HMCameraView

fn borrow(&self) -> &NSObject

Immutably borrows from an owned value.

impl Borrow<UIResponder> for HMCameraView

fn borrow(&self) -> &UIResponder

Immutably borrows from an owned value.

impl Borrow<UIView> for HMCameraView

fn borrow(&self) -> &UIView

Immutably borrows from an owned value.

impl CALayerDelegate for HMCameraView

Available on crate feature objc2-quartz-core and non-watchOS only.

unsafe fn displayLayer(&self, layer: &CALayer)

where Self: Sized + Message,

unsafe fn layerWillDraw(&self, layer: &CALayer)

where Self: Sized + Message,

unsafe fn layoutSublayersOfLayer(&self, layer: &CALayer)

where Self: Sized + Message,

unsafe fn actionForLayer_forKey( &self, layer: &CALayer, event: &NSString, ) -> Option<Retained<ProtocolObject<dyn CAAction>>>

where Self: Sized + Message,

impl ClassType for HMCameraView

const NAME: &'static str = "HMCameraView"

The name of the Objective-C class that this type represents.

type Super = UIView

The superclass of this class.

type ThreadKind = <<HMCameraView as ClassType>::Super as ClassType>::ThreadKind

Whether the type can be used from any thread, or from only the main thread.

fn class() -> &'static AnyClass

Get a reference to the Objective-C class that this type represents.

fn as_super(&self) -> &Self::Super

Get an immutable reference to the superclass.

impl Debug for HMCameraView

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

Formats the value using the given formatter.

impl Deref for HMCameraView

type Target = UIView

The resulting type after dereferencing.

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

Dereferences the value.

impl Hash for HMCameraView

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for HMCameraView

fn retain(&self) -> Retained<Self>

where Self: Sized,

Increment the reference count of the receiver.

impl NSCoding for HMCameraView

unsafe fn encodeWithCoder(&self, coder: &NSCoder)

where Self: Sized + Message,

Available on crate feature NSCoder only.

unsafe fn initWithCoder( this: Allocated<Self>, coder: &NSCoder, ) -> Option<Retained<Self>>

where Self: Sized + Message,

Available on crate feature NSCoder only.

impl NSObjectProtocol for HMCameraView

fn isEqual(&self, other: Option<&AnyObject>) -> bool

where Self: Sized + Message,

Check whether the object is equal to an arbitrary other object.

fn hash(&self) -> usize

where Self: Sized + Message,

An integer that can be used as a table address in a hash table structure.

fn isKindOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of the class, or one of its subclasses.

fn is_kind_of<T>(&self) -> bool

where T: ClassType, Self: Sized + Message,

👎Deprecated: use isKindOfClass directly, or cast your objects with AnyObject::downcast_ref

Check if the object is an instance of the class type, or one of its subclasses.

fn isMemberOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of a specific class, without checking subclasses.

fn respondsToSelector(&self, aSelector: Sel) -> bool

where Self: Sized + Message,

Check whether the object implements or inherits a method with the given selector.

fn conformsToProtocol(&self, aProtocol: &AnyProtocol) -> bool

where Self: Sized + Message,

Check whether the object conforms to a given protocol.

fn description(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object.

fn debugDescription(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object to use when debugging.

fn isProxy(&self) -> bool

where Self: Sized + Message,

Check whether the receiver is a subclass of the NSProxy root class instead of the usual NSObject.

fn retainCount(&self) -> usize

where Self: Sized + Message,

The reference count of the object.

impl PartialEq for HMCameraView

fn eq(&self, other: &Self) -> 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 RefEncode for HMCameraView

const ENCODING_REF: Encoding = <UIView as ::objc2::RefEncode>::ENCODING_REF

The Objective-C type-encoding for a reference of this type.

impl UIAppearance for HMCameraView

unsafe fn appearance(mtm: MainThreadMarker) -> Retained<Self>

where Self: Sized + ClassType,

unsafe fn appearanceWhenContainedInInstancesOfClasses( container_types: &NSArray<AnyClass>, mtm: MainThreadMarker, ) -> Retained<Self>

where Self: Sized + ClassType,

unsafe fn appearanceForTraitCollection( trait: &UITraitCollection, mtm: MainThreadMarker, ) -> Retained<Self>

where Self: Sized + ClassType,

Available on crate feature UITraitCollection only.

unsafe fn appearanceForTraitCollection_whenContainedInInstancesOfClasses( trait: &UITraitCollection, container_types: &NSArray<AnyClass>, mtm: MainThreadMarker, ) -> Retained<Self>

where Self: Sized + ClassType,

Available on crate feature UITraitCollection only.

impl UIDynamicItem for HMCameraView

unsafe fn collisionBoundsType(&self) -> UIDynamicItemCollisionBoundsType

where Self: Sized + Message,

The collision type represents how the dynamics system will evaluate collisions with respect to the dynamic item. defaults to UIDynamicItemCollisionBoundsTypeRectangle

impl UIFocusEnvironment for HMCameraView

unsafe fn preferredFocusEnvironments( &self, ) -> Retained<NSArray<ProtocolObject<dyn UIFocusEnvironment>>>

where Self: Sized + Message,

The preferred focus environments define where to search for the default focused item in an environment, such as when focus updates programmatically. Starting from the target environment, each preferred focus environment is recursively searched in the order of the array until an eligible, focusable item is found. Preferred focus environments can include focusable and non-focusable items, in addition to non-item environments. Returning an empty array is equivalent to returning an array containing only ‘self’.

unsafe fn parentFocusEnvironment( &self, ) -> Option<Retained<ProtocolObject<dyn UIFocusEnvironment>>>

where Self: Sized + Message,

The parent focus environment of this environment, or nil if no parent exists. NOTE: If you implement this method, you must return a non-nil value for parent focus environment, otherwise your focus environment will not participate in focus interactions.

unsafe fn focusItemContainer( &self, ) -> Option<Retained<ProtocolObject<dyn UIFocusItemContainer>>>

where Self: Sized + Message,

The container of any child focus items in this focus environment, or nil if no container exists.

unsafe fn setNeedsFocusUpdate(&self)

where Self: Sized + Message,

Marks this environment as needing a focus update, which if accepted will attempt to reset focus to this environment, or one of its preferred focus environments, on the next update cycle. If this environment does not currently contain the focused item, then calling this method has no effect. If a parent of this environment is also requesting focus, then this environment’s request is rejected in favor of the parent’s. NOTE: If you provide your own implementation, it must call [[UIFocusSystem focusSystemForEnvironment:self] requestFocusUpdateToEnvironment:self];

unsafe fn updateFocusIfNeeded(&self)

where Self: Sized + Message,

Forces focus to be updated immediately. If there is an environment that has requested a focus update via -setNeedsFocusUpdate, and the request was accepted, then focus will be updated to that environment or one of its preferred focus environments. NOTE: If you provide your own implementation, it must call [[UIFocusSystem focusSystemForEnvironment:self] updateFocusIfNeeded];.

unsafe fn shouldUpdateFocusInContext( &self, context: &UIFocusUpdateContext, ) -> bool

where Self: Sized + Message,

Asks whether the system should allow a focus update to occur.

unsafe fn soundIdentifierForFocusUpdateInContext( &self, context: &UIFocusUpdateContext, ) -> Option<Retained<NSString>>

where Self: Sized + Message,

Specifies an identifier corresponding to a sound that should be played for a focus update. Return UIFocusSoundIdentifierNone to opt out of sounds, UIFocusSoundIdentifierDefault for the system default sounds, a previously registered identifier for a custom sound, or nil to defer the decision to the parent.

unsafe fn preferredFocusedView(&self) -> Option<Retained<UIView>>

where Self: Sized + Message,

👎Deprecated

Available on crate features UIResponder and UIView only.

unsafe fn focusGroupIdentifier(&self) -> Option<Retained<NSString>>

where Self: Sized + Message,

The identifier of the focus group that this view belongs to. If this is nil, subviews inherit their superview’s focus group.

impl UIFocusItem for HMCameraView

unsafe fn canBecomeFocused(&self) -> bool

where Self: Sized + Message,

Indicates whether or not this item is currently allowed to become focused. Returning NO restricts the item from being focusable, even if it is visible in the user interface. For example, UIControls return NO if they are disabled.

unsafe fn focusGroupPriority(&self) -> isize

where Self: Sized + Message,

The priority this item has in its focus group. The higher the priority, the more likely it is to get picked when focus moves into this group. Note: this method can only be used to increase an item’s priority, not decrease it. For example if an item is currently selected, the actual priority of this item will be determined by MAX(focusGroupPriority, UIFocusGroupPrioritySelected).

unsafe fn focusItemDeferralMode(&self) -> UIFocusItemDeferralMode

where Self: Sized + Message,

If this property is present and returns UIFocusItemDeferralModeNever, the focus deferral will not be enabled again after the user engagement timeout has expired if this item is currently focused and programmatic focus updates pointing to this item will be executed immediatly. If it returns UIFocusItemDeferralModeAlways focus will always be deferred when this item is supposed to be focused. Does nothing when focus deferral is not supported on the platform.

unsafe fn isTransparentFocusItem(&self) -> bool

where Self: Sized + Message,

If this returns YES, the focus item is considered transparent in terms of occlusion. Items that are behind it are focusable. This value is ignored when the item is focusable, in which case the item is never considered transparent.

impl UIFocusItemContainer for HMCameraView

unsafe fn coordinateSpace( &self, ) -> Retained<ProtocolObject<dyn UICoordinateSpace>>

where Self: Sized + Message,

Available on crate feature UIView only.

The coordinate space of the focus items contained in this container. The focus items returned by focusItemsInRect: should report their frames in this coordinate space. If you are implementing this protocol, you may find it convenient to return the UIScreen as your coordinate space, and ensure that your contained items report their frames in screen space. Similarly, you might find that your focus items’ containing UIView or UIWindow is the most convenient coordinate space to use. You may also choose to implement your own object that conforms to UICoordinateSpace, if that is the most natural solution for your architecture.

impl UIResponderStandardEditActions for HMCameraView

unsafe fn cut(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn copy(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn paste(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn pasteAndMatchStyle(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn pasteAndGo(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn pasteAndSearch(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn select(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn selectAll(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn delete(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn makeTextWritingDirectionLeftToRight(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn makeTextWritingDirectionRightToLeft(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn toggleBoldface(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn toggleItalics(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn toggleUnderline(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn increaseSize(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn decreaseSize(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn find(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn findAndReplace(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn findNext(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn findPrevious(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn useSelectionForFind(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn print(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn rename(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn duplicate(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn move(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn export(&self, sender: Option<&AnyObject>)

where Self: Sized + Message,

unsafe fn showWritingTools(&self, sender: &AnyObject)

where Self: Sized + Message,

impl UITraitEnvironment for HMCameraView

fn traitCollection(&self) -> Retained<UITraitCollection>

where Self: Sized + Message,

unsafe fn traitCollectionDidChange( &self, previous_trait_collection: Option<&UITraitCollection>, )

where Self: Sized + Message,

👎Deprecated: Use the trait change registration APIs declared in the UITraitChangeObservable protocol

To be overridden as needed to provide custom behavior when the environment’s traits change.

impl DowncastTarget for HMCameraView

impl Eq for HMCameraView

impl UIAppearanceContainer for HMCameraView

impl UICoordinateSpace for HMCameraView