#[repr(C)]pub struct MKMapSnapshotOptions { /* private fields */ }
MKMapSnapshotOptions
only.Expand description
Implementations§
Source§impl MKMapSnapshotOptions
impl MKMapSnapshotOptions
pub unsafe fn preferredConfiguration(&self) -> Retained<MKMapConfiguration>
MKMapConfiguration
only.Sourcepub unsafe fn setPreferredConfiguration(
&self,
preferred_configuration: &MKMapConfiguration,
)
Available on crate feature MKMapConfiguration
only.
pub unsafe fn setPreferredConfiguration( &self, preferred_configuration: &MKMapConfiguration, )
MKMapConfiguration
only.Setter for preferredConfiguration
.
pub unsafe fn camera(&self) -> Retained<MKMapCamera>
MKMapCamera
only.Sourcepub unsafe fn setCamera(&self, camera: &MKMapCamera)
Available on crate feature MKMapCamera
only.
pub unsafe fn setCamera(&self, camera: &MKMapCamera)
MKMapCamera
only.Setter for camera
.
pub unsafe fn mapRect(&self) -> MKMapRect
MKGeometry
only.Sourcepub unsafe fn setMapRect(&self, map_rect: MKMapRect)
Available on crate feature MKGeometry
only.
pub unsafe fn setMapRect(&self, map_rect: MKMapRect)
MKGeometry
only.Setter for mapRect
.
pub unsafe fn region(&self) -> MKCoordinateRegion
MKGeometry
and objc2-core-location
only.Sourcepub unsafe fn setRegion(&self, region: MKCoordinateRegion)
Available on crate features MKGeometry
and objc2-core-location
only.
pub unsafe fn setRegion(&self, region: MKCoordinateRegion)
MKGeometry
and objc2-core-location
only.Setter for region
.
pub unsafe fn mapType(&self) -> MKMapType
MKTypes
only.Sourcepub unsafe fn setMapType(&self, map_type: MKMapType)
👎Deprecated: Use preferredConfigurationAvailable on crate feature MKTypes
only.
pub unsafe fn setMapType(&self, map_type: MKMapType)
MKTypes
only.Setter for mapType
.
pub unsafe fn pointOfInterestFilter( &self, ) -> Option<Retained<MKPointOfInterestFilter>>
MKPointOfInterestFilter
only.Sourcepub unsafe fn setPointOfInterestFilter(
&self,
point_of_interest_filter: Option<&MKPointOfInterestFilter>,
)
👎Deprecated: Use preferredConfigurationAvailable on crate feature MKPointOfInterestFilter
only.
pub unsafe fn setPointOfInterestFilter( &self, point_of_interest_filter: Option<&MKPointOfInterestFilter>, )
MKPointOfInterestFilter
only.Setter for pointOfInterestFilter
.
pub unsafe fn showsPointsOfInterest(&self) -> bool
Sourcepub unsafe fn setShowsPointsOfInterest(&self, shows_points_of_interest: bool)
👎Deprecated: Use preferredConfiguration
pub unsafe fn setShowsPointsOfInterest(&self, shows_points_of_interest: bool)
Setter for showsPointsOfInterest
.
pub unsafe fn showsBuildings(&self) -> bool
Sourcepub unsafe fn setShowsBuildings(&self, shows_buildings: bool)
👎Deprecated: No longer supported.
pub unsafe fn setShowsBuildings(&self, shows_buildings: bool)
Setter for showsBuildings
.
pub unsafe fn size(&self) -> NSSize
pub unsafe fn appearance(&self) -> Option<Retained<NSAppearance>>
objc2-app-kit
and macOS only.Sourcepub unsafe fn setAppearance(&self, appearance: Option<&NSAppearance>)
Available on crate feature objc2-app-kit
and macOS only.
pub unsafe fn setAppearance(&self, appearance: Option<&NSAppearance>)
objc2-app-kit
and macOS only.Setter for appearance
.
Methods from Deref<Target = NSObject>§
Sourcepub fn doesNotRecognizeSelector(&self, sel: Sel) -> !
pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !
Handle messages the object doesn’t recognize.
See Apple’s documentation for details.
Methods from Deref<Target = AnyObject>§
Sourcepub fn class(&self) -> &'static AnyClass
pub fn class(&self) -> &'static AnyClass
Dynamically find the class of this object.
§Panics
May panic if the object is invalid (which may be the case for objects
returned from unavailable init
/new
methods).
§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());
Sourcepub unsafe fn get_ivar<T>(&self, name: &str) -> &Twhere
T: Encode,
👎Deprecated: this is difficult to use correctly, use Ivar::load
instead.
pub unsafe fn get_ivar<T>(&self, name: &str) -> &Twhere
T: Encode,
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.
Sourcepub fn downcast_ref<T>(&self) -> Option<&T>where
T: DowncastTarget,
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§
Source§impl AsRef<AnyObject> for MKMapSnapshotOptions
impl AsRef<AnyObject> for MKMapSnapshotOptions
Source§impl AsRef<NSObject> for MKMapSnapshotOptions
impl AsRef<NSObject> for MKMapSnapshotOptions
Source§impl Borrow<AnyObject> for MKMapSnapshotOptions
impl Borrow<AnyObject> for MKMapSnapshotOptions
Source§impl Borrow<NSObject> for MKMapSnapshotOptions
impl Borrow<NSObject> for MKMapSnapshotOptions
Source§impl ClassType for MKMapSnapshotOptions
impl ClassType for MKMapSnapshotOptions
Source§const NAME: &'static str = "MKMapSnapshotOptions"
const NAME: &'static str = "MKMapSnapshotOptions"
Source§type ThreadKind = <<MKMapSnapshotOptions as ClassType>::Super as ClassType>::ThreadKind
type ThreadKind = <<MKMapSnapshotOptions as ClassType>::Super as ClassType>::ThreadKind
Source§impl CopyingHelper for MKMapSnapshotOptions
impl CopyingHelper for MKMapSnapshotOptions
Source§type Result = MKMapSnapshotOptions
type Result = MKMapSnapshotOptions
Self
if the type has no
immutable counterpart. Read moreSource§impl Debug for MKMapSnapshotOptions
impl Debug for MKMapSnapshotOptions
Source§impl Deref for MKMapSnapshotOptions
impl Deref for MKMapSnapshotOptions
Source§impl Hash for MKMapSnapshotOptions
impl Hash for MKMapSnapshotOptions
Source§impl Message for MKMapSnapshotOptions
impl Message for MKMapSnapshotOptions
Source§impl NSCopying for MKMapSnapshotOptions
impl NSCopying for MKMapSnapshotOptions
Source§impl NSObjectProtocol for MKMapSnapshotOptions
impl NSObjectProtocol for MKMapSnapshotOptions
Source§fn isEqual(&self, other: Option<&AnyObject>) -> bool
fn isEqual(&self, other: Option<&AnyObject>) -> bool
Source§fn hash(&self) -> usize
fn hash(&self) -> usize
Source§fn isKindOfClass(&self, cls: &AnyClass) -> bool
fn isKindOfClass(&self, cls: &AnyClass) -> bool
Source§fn is_kind_of<T>(&self) -> bool
fn is_kind_of<T>(&self) -> bool
isKindOfClass
directly, or cast your objects with AnyObject::downcast_ref