Struct QLThumbnail 

pub struct QLThumbnail { /* private fields */ }

Available on crate feature QLThumbnail only.

Apple’s documentation

Implementations

impl QLThumbnail

pub unsafe fn new( allocator: Option<&CFAllocator>, url: Option<&CFURL>, max_thumbnail_size: CGSize, options: Option<&CFDictionary>, ) -> Option<CFRetained<QLThumbnail>>

👎Deprecated: Use QLThumbnailGenerationRequest in QuickLookThumbnailing to generate thumbnails.

Safety

• allocator might not allow None.
• url might not allow None.
• options generics must be of the correct type.
• options might not allow None.

pub unsafe fn document_url(&self) -> Option<CFRetained<CFURL>>

👎Deprecated: Use QuickLookThumbnailing for thumbnails.

pub unsafe fn maximum_size(&self) -> CGSize

👎Deprecated: Use QLThumbnailGenerationRequest in QuickLookThumbnailing.

pub unsafe fn options(&self) -> Option<CFRetained<CFDictionary>>

👎Deprecated: Use QuickLookThumbnailing for thumbnails.

pub unsafe fn dispatch_async( &self, queue: Option<&DispatchQueue>, completion: dispatch_block_t, )

👎Deprecated: Use QLThumbnailGenerator in QuickLookThumbnailing to generate thumbnails.

Available on crate feature dispatch2 only.

Safety

• queue possibly has additional threading requirements.
• queue might not allow None.
• completion must be a valid pointer.

pub unsafe fn image(&self) -> Option<CFRetained<CGImage>>

👎Deprecated: Use QuickLookThumbnailing for thumbnails.

Available on crate feature objc2-core-graphics only.

pub unsafe fn content_rect(&self) -> CGRect

👎Deprecated: Use QuickLookThumbnailing for thumbnails.

pub unsafe fn cancel(&self)

👎Deprecated: Use [QLThumbnailGenerator cancelRequest:] in QuickLookThumbnailing.

pub unsafe fn is_cancelled(&self) -> bool

👎Deprecated: Use QuickLookThumbnailing for thumbnails.

impl QLThumbnail

pub unsafe fn image_create( allocator: Option<&CFAllocator>, url: Option<&CFURL>, max_thumbnail_size: CGSize, options: Option<&CFDictionary>, ) -> Option<CFRetained<CGImage>>

👎Deprecated: Use QuickLookThumbnailing to generate thumbnails for files.

Available on crate features QLThumbnailImage and objc2-core-graphics only.

Creates a thumbnail for the designated file. Returns NULL if Quick Look does not support this file type.

Parameter allocator: The allocator to use to create the image.

Parameter url: The URL to the file.

Parameter maxThumbnailSize: The maximum desired size.

Parameter options: See options below.

Returns: The thumbnail image. NULL if not available.

QLThumbnailImageCreate() does not replace IconServices. Also QLThumbnailImageCreate() will block until the thumbnail is generated so you should consider calling it in a thread.

Safety

• allocator might not allow None.
• url might not allow None.
• options generics must be of the correct type.
• options might not allow None.

Methods from Deref<Target = CFType>

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

where T: ConcreteType,

Attempt to downcast the type to that of type T.

This is the reference-variant. Use CFRetained::downcast if you want to convert a retained type. See also ConcreteType for more details on which types support being converted to.

pub fn retain_count(&self) -> usize

Get the reference count of the object.

This function may be useful for debugging. You normally do not use this function otherwise.

Beware that some things (like CFNumbers, small CFStrings etc.) may not have a normal retain count for optimization purposes, and can return usize::MAX in that case.

Trait Implementations

impl AsRef<AnyObject> for QLThumbnail

fn as_ref(&self) -> &AnyObject

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

impl AsRef<CFType> for QLThumbnail

fn as_ref(&self) -> &CFType

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

impl AsRef<QLThumbnail> for QLThumbnail

fn as_ref(&self) -> &Self

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

impl Borrow<AnyObject> for QLThumbnail

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<CFType> for QLThumbnail

fn borrow(&self) -> &CFType

Immutably borrows from an owned value.

impl ConcreteType for QLThumbnail

fn type_id() -> CFTypeID

Get the unique CFTypeID identifier for the type.

impl Debug for QLThumbnail

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

Formats the value using the given formatter.

impl Deref for QLThumbnail

type Target = CFType

The resulting type after dereferencing.

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

Dereferences the value.

impl Hash for QLThumbnail

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 QLThumbnail

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

where Self: Sized,

Increment the reference count of the receiver.

impl PartialEq for QLThumbnail

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 QLThumbnail

const ENCODING_REF: Encoding

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

impl Type for QLThumbnail

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

where Self: Sized,

Increment the reference count of the receiver.

fn as_concrete_TypeRef(&self) -> &Self

👎Deprecated: this is redundant

Helper for easier transition from the core-foundation crate.

unsafe fn wrap_under_get_rule(ptr: *const Self) -> CFRetained<Self>

where Self: Sized,

👎Deprecated: use CFRetained::retain

Helper for easier transition from the core-foundation crate.

fn as_CFTypeRef(&self) -> &CFType

where Self: AsRef<CFType>,

👎Deprecated: this is redundant (CF types deref to CFType)

Helper for easier transition from the core-foundation crate.

unsafe fn wrap_under_create_rule(ptr: *const Self) -> CFRetained<Self>

where Self: Sized,

👎Deprecated: use CFRetained::from_raw

Helper for easier transition from the core-foundation crate.

impl Eq for QLThumbnail