Struct CGImage 

pub struct CGImage { /* private fields */ }

Available on crate feature CGImage only.

Apple’s documentation

Implementations

impl CGImage

pub unsafe fn new( width: usize, height: usize, bits_per_component: usize, bits_per_pixel: usize, bytes_per_row: usize, space: Option<&CGColorSpace>, bitmap_info: CGBitmapInfo, provider: Option<&CGDataProvider>, decode: *const CGFloat, should_interpolate: bool, intent: CGColorRenderingIntent, ) -> Option<CFRetained<CGImage>>

Available on crate features CGColorSpace and CGDataProvider only.

Safety

decode must be a valid pointer or null.

pub unsafe fn mask_create( width: usize, height: usize, bits_per_component: usize, bits_per_pixel: usize, bytes_per_row: usize, provider: Option<&CGDataProvider>, decode: *const CGFloat, should_interpolate: bool, ) -> Option<CFRetained<CGImage>>

Available on crate feature CGDataProvider only.

Safety

decode must be a valid pointer or null.

pub fn new_copy(image: Option<&CGImage>) -> Option<CFRetained<CGImage>>

pub unsafe fn with_jpeg_data_provider( source: Option<&CGDataProvider>, decode: *const CGFloat, should_interpolate: bool, intent: CGColorRenderingIntent, ) -> Option<CFRetained<CGImage>>

Available on crate features CGColorSpace and CGDataProvider only.

Safety

decode must be a valid pointer or null.

pub unsafe fn with_png_data_provider( source: Option<&CGDataProvider>, decode: *const CGFloat, should_interpolate: bool, intent: CGColorRenderingIntent, ) -> Option<CFRetained<CGImage>>

Available on crate features CGColorSpace and CGDataProvider only.

Safety

decode must be a valid pointer or null.

pub fn with_image_in_rect( image: Option<&CGImage>, rect: CGRect, ) -> Option<CFRetained<CGImage>>

pub fn with_mask( image: Option<&CGImage>, mask: Option<&CGImage>, ) -> Option<CFRetained<CGImage>>

pub unsafe fn with_masking_colors( image: Option<&CGImage>, components: *const CGFloat, ) -> Option<CFRetained<CGImage>>

Safety

components must be a valid pointer or null.

pub fn new_copy_with_color_space( image: Option<&CGImage>, space: Option<&CGColorSpace>, ) -> Option<CFRetained<CGImage>>

Available on crate feature CGColorSpace only.

pub unsafe fn with_content_headroom( headroom: c_float, width: usize, height: usize, bits_per_component: usize, bits_per_pixel: usize, bytes_per_row: usize, space: Option<&CGColorSpace>, bitmap_info: CGBitmapInfo, provider: Option<&CGDataProvider>, decode: *const CGFloat, should_interpolate: bool, intent: CGColorRenderingIntent, ) -> Option<CFRetained<CGImage>>

Available on crate features CGColorSpace and CGDataProvider only.

Safety

decode must be a valid pointer or null.

pub fn new_copy_with_content_headroom( headroom: c_float, image: Option<&CGImage>, ) -> Option<CFRetained<CGImage>>

impl CGImage

pub fn content_headroom(image: Option<&CGImage>) -> c_float

pub fn calculate_content_headroom(image: Option<&CGImage>) -> c_float

pub fn content_average_light_level(image: Option<&CGImage>) -> c_float

pub fn calculate_content_average_light_level(image: Option<&CGImage>) -> c_float

pub fn new_copy_with_content_average_light_level( image: Option<&CGImage>, avll: c_float, ) -> Option<CFRetained<CGImage>>

pub fn new_copy_with_calculated_hdr_stats( image: Option<&CGImage>, ) -> Option<CFRetained<CGImage>>

pub fn is_mask(image: Option<&CGImage>) -> bool

pub fn width(image: Option<&CGImage>) -> usize

pub fn height(image: Option<&CGImage>) -> usize

pub fn bits_per_component(image: Option<&CGImage>) -> usize

pub fn bits_per_pixel(image: Option<&CGImage>) -> usize

pub fn bytes_per_row(image: Option<&CGImage>) -> usize

pub fn color_space(image: Option<&CGImage>) -> Option<CFRetained<CGColorSpace>>

Available on crate feature CGColorSpace only.

pub fn alpha_info(image: Option<&CGImage>) -> CGImageAlphaInfo

pub fn data_provider( image: Option<&CGImage>, ) -> Option<CFRetained<CGDataProvider>>

Available on crate feature CGDataProvider only.

pub fn decode(image: Option<&CGImage>) -> *const CGFloat

pub fn should_interpolate(image: Option<&CGImage>) -> bool

pub fn rendering_intent(image: Option<&CGImage>) -> CGColorRenderingIntent

Available on crate feature CGColorSpace only.

pub fn bitmap_info(image: Option<&CGImage>) -> CGBitmapInfo

pub fn byte_order_info(image: Option<&CGImage>) -> CGImageByteOrderInfo

pub fn pixel_format_info(image: Option<&CGImage>) -> CGImagePixelFormatInfo

pub fn should_tone_map(image: Option<&CGImage>) -> bool

pub fn contains_image_specific_tone_mapping_metadata( image: Option<&CGImage>, ) -> bool

pub fn ut_type(image: Option<&CGImage>) -> Option<CFRetained<CFString>>

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 CGImage

fn as_ref(&self) -> &AnyObject

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

impl AsRef<CFType> for CGImage

fn as_ref(&self) -> &CFType

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

impl AsRef<CGImage> for CGImage

fn as_ref(&self) -> &Self

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

impl Borrow<AnyObject> for CGImage

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<CFType> for CGImage

fn borrow(&self) -> &CFType

Immutably borrows from an owned value.

impl ConcreteType for CGImage

fn type_id() -> CFTypeID

Get the unique CFTypeID identifier for the type.

impl Debug for CGImage

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

Formats the value using the given formatter.

impl Deref for CGImage

type Target = CFType

The resulting type after dereferencing.

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

Dereferences the value.

impl Hash for CGImage

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 CGImage

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

where Self: Sized,

Increment the reference count of the receiver.

impl PartialEq for CGImage

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 CGImage

const ENCODING_REF: Encoding

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

impl Type for CGImage

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 CGImage

impl Send for CGImage

impl Sync for CGImage