Struct ImageBitmap 

pub struct ImageBitmap { /* private fields */ }

Immutable image data used by UI primitives and render backends.

Implementations

impl ImageBitmap

pub fn from_rgba8( width: u32, height: u32, pixels: Vec<u8>, ) -> Result<ImageBitmap, ImageBitmapError>

Creates a bitmap by taking ownership of tightly packed RGBA8 pixels. Any spare capacity in the pixel buffer is released.

pub fn from_rgba8_slice( width: u32, height: u32, pixels: &[u8], ) -> Result<ImageBitmap, ImageBitmapError>

Copies tightly packed RGBA8 pixels into a new bitmap.

pub fn from_alpha8( width: u32, height: u32, color: [u8; 3], alpha: Vec<u8>, ) -> Result<ImageBitmap, ImageBitmapError>

Takes ownership of one alpha byte per pixel with a constant RGB color. Any spare capacity in the alpha buffer is released.

pub fn id(&self) -> u64

Content-derived bitmap identity used by renderer caches. Each frame of an ExternalTexture has its own id.

pub fn storage_id(&self) -> u64

Identity of the bitmap’s storage: the same for every frame of an ExternalTexture, equal to Self::id for pixel bitmaps.

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

where T: 'static,

The renderer handle of an ExternalTexture frame, when it is a T.

pub fn width(&self) -> u32

Width in pixels.

pub fn height(&self) -> u32

Height in pixels.

pub fn pixels(&self) -> &[u8]

Returns the raw pixel bytes in Self::format, empty for an ExternalTexture frame.

pub fn format(&self) -> ImagePixelFormat

Returns the storage format of Self::pixels.

pub fn rgba8_pixel(&self, index: usize) -> [u8; 4]

Returns the unpremultiplied RGBA8 pixel at a row-major index; transparent for an ExternalTexture frame.

Panics

Panics when index is outside the image.

pub fn rgba8_pixels(&self) -> Cow<'_, [u8]>

Returns tightly packed RGBA8 bytes, borrowing RGBA images and expanding alpha masks; empty for an ExternalTexture frame.

pub fn is_opaque(&self) -> bool

Returns true when every source pixel has full alpha.

pub fn intrinsic_size(&self) -> Size

Returns intrinsic size in logical units.

Trait Implementations

impl Clone for ImageBitmap

fn clone(&self) -> ImageBitmap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ImageBitmap

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

Formats the value using the given formatter.

impl Eq for ImageBitmap

impl From<ImageBitmap> for Painter

fn from(value: ImageBitmap) -> Self

Converts to this type from the input type.

impl Hash for ImageBitmap

fn hash<H>(&self, state: &mut H)

where H: Hasher,

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 PartialEq for ImageBitmap

fn eq(&self, other: &ImageBitmap) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl RenderHash for ImageBitmap

fn render_hash(&self) -> u64