Struct core_graphics::data_provider::CGDataProvider

pub struct CGDataProvider(_);

Implementations

impl CGDataProvider

pub fn type_id() -> CFTypeID

pub fn from_buffer(buffer: Arc<Vec<u8>>) -> Self

Creates a data provider from the given reference-counted buffer.

The CGDataProvider object takes ownership of the reference. Once the data provider is destroyed, the reference count of the buffer is automatically decremented.

pub unsafe fn from_slice(buffer: &[u8]) -> Self

Creates a data prvider from a given slice. The data provider does not own the slice in this case, so it's up to the user to ensure the memory safety here.

pub unsafe fn from_custom_data(custom_data: Box<Box<dyn CustomData>>) -> Self

Creates a data provider from the given raw pointer, length, and destructor function.

This is double-boxed because the Core Text API requires that the userdata be a single pointer.

Methods from Deref<Target = CGDataProviderRef>

pub fn copy_data(&self) -> CFData

Creates a copy of the data from the underlying CFDataProviderRef.

Trait Implementations

impl AsRef<CGDataProviderRef> for CGDataProvider

fn as_ref(&self) -> &CGDataProviderRef

Performs the conversion.

impl Borrow<CGDataProviderRef> for CGDataProvider

fn borrow(&self) -> &CGDataProviderRef

Immutably borrows from an owned value.

impl Clone for CGDataProvider

fn clone(&self) -> CGDataProvider

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Deref for CGDataProvider

type Target = CGDataProviderRef

The resulting type after dereferencing.

fn deref(&self) -> &CGDataProviderRef

Dereferences the value.

impl DerefMut for CGDataProvider

fn deref_mut(&mut self) -> &mut CGDataProviderRef

Mutably dereferences the value.

impl Drop for CGDataProvider

fn drop(&mut self)

Executes the destructor for this type.