Struct Drawable 

pub struct Drawable(/* private fields */);

A displayable resource that can be rendered to.

C++ equivalent: MTL::Drawable

The drawable protocol represents a displayable resource. Drawables are typically obtained from a CAMetalLayer and are used as render targets.

Implementations

impl Drawable

pub unsafe fn from_raw(ptr: *mut c_void) -> Option<Self>

Create a Drawable from a raw pointer.

Safety

The pointer must be a valid Metal drawable object.

pub fn as_raw(&self) -> *mut c_void

Get the raw pointer to the drawable.

pub fn present(&self)

Present the drawable to the screen.

C++ equivalent: void present()

pub fn present_at_time(&self, presentation_time: TimeInterval)

Present the drawable at the specified time.

C++ equivalent: void presentAtTime(CFTimeInterval presentationTime)

Arguments

• presentation_time - The host time at which to present the drawable.

pub fn present_after_minimum_duration(&self, duration: TimeInterval)

Present the drawable after a minimum duration.

C++ equivalent: void presentAfterMinimumDuration(CFTimeInterval duration)

Arguments

• duration - The minimum duration before presenting.

pub fn drawable_id(&self) -> UInteger

Get the unique identifier for this drawable.

C++ equivalent: NS::UInteger drawableID() const

pub fn presented_time(&self) -> TimeInterval

Get the time at which this drawable was presented.

C++ equivalent: CFTimeInterval presentedTime() const

Returns 0.0 if the drawable has not been presented yet.

pub fn add_presented_handler<F>(&self, handler: F)

where F: Fn(&Drawable) + Send + 'static,

Add a handler to be called when the drawable is presented.

C++ equivalent: void addPresentedHandler(void (^)(Drawable*))

The handler is called when the drawable has been presented to the display.

Trait Implementations

impl Clone for Drawable

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 Drawable

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

Formats the value using the given formatter.

impl Drop for Drawable

fn drop(&mut self)

Executes the destructor for this type.

impl Referencing for Drawable

fn as_ptr(&self) -> *const c_void

Get the raw pointer to the Objective-C object.

fn as_mut_ptr(&self) -> *mut c_void

Get the raw mutable pointer to the Objective-C object.

fn retain(&self) -> Self

where Self: Clone,

Retain the object, incrementing its reference count.

fn release(&self)

Release the object, decrementing its reference count.

fn autorelease(&self) -> Self

where Self: Clone,

Autorelease the object.

fn retain_count(&self) -> usize

Get the retain count of the object.

impl Send for Drawable

impl Sync for Drawable