Enum ImageCacheKey

#[repr(u8)]
pub enum ImageCacheKey {
    Invalid = 0,
    Path(CachedPath),
    EmbeddedData(usize),
}

ImageCacheKey encapsulates the different ways of indexing images in the cache of decoded images.

Variants

Invalid = 0

This variant indicates that no image cache key can be created for the image. For example this is the case for programmatically created images.

Path(CachedPath)

The image is identified by its path on the file system and the last modification time stamp.

EmbeddedData(usize)

The image is identified by the static address of its encoded data.

Implementations

impl ImageCacheKey

pub fn new(resource: &ImageInner) -> Option<Self>

Returns a new cache key if decoded image data can be stored in image cache for the given ImageInner.

pub fn from_embedded_image_data(data: &'static [u8]) -> Self

Returns a cache key for static embedded image data.

Trait Implementations

impl Clone for ImageCacheKey

fn clone(&self) -> ImageCacheKey

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ImageCacheKey

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

Formats the value using the given formatter.

impl Hash for ImageCacheKey

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 PartialEq for ImageCacheKey

fn eq(&self, other: &ImageCacheKey) -> 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 Eq for ImageCacheKey

impl StructuralPartialEq for ImageCacheKey