Enum ImageSource

pub enum ImageSource<'a> {
    Uri(Cow<'a, str>),
    Texture(SizedTexture),
    Bytes {
        uri: Cow<'static, str>,
        bytes: Bytes,
    },
}

This type tells the Ui how to load an image.

This is used by Image::new and Ui::image.

Variants

Uri(Cow<'a, str>)

Load the image from a URI, e.g. https://example.com/image.png.

This could be a file:// path, https:// url, bytes:// identifier, or some other scheme.

How the URI will be turned into a texture for rendering purposes is up to the registered loaders to handle.

See crate::load for more information.

Texture(SizedTexture)

Load the image from an existing texture.

The user is responsible for loading the texture, determining its size, and allocating a TextureId for it.

Bytes

Load the image from some raw bytes.

The Bytes may be:

• 'static, obtained from include_bytes! or similar
• Anything that can be converted to Arc<[u8]>

This instructs the Ui to cache the raw bytes, which are then further processed by any registered loaders.

See also include_image for an easy way to load and display static images.

See crate::load for more information.

Fields

uri: Cow<'static, str>

The unique identifier for this image, e.g. bytes://my_logo.png.

You should use a proper extension (.jpg, .png, .svg, etc) for the image to load properly.

Use the bytes:// scheme for the URI for better error messages.

bytes: Bytes

Implementations

impl<'a> ImageSource<'a>

pub fn texture_size(&self) -> Option<Vec2>

Size of the texture, if known.

pub fn load( self, ctx: &Context, texture_options: TextureOptions, size_hint: SizeHint, ) -> Result<TexturePoll, LoadError>

Errors

Failure to load the texture.

pub fn uri(&self) -> Option<&str>

Get the uri that this image was constructed from.

This will return None for Self::Texture.

Trait Implementations

impl<'a> Clone for ImageSource<'a>

fn clone(&self) -> ImageSource<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for ImageSource<'a>

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

Formats the value using the given formatter.

impl<'a> From<&'a Cow<'a, str>> for ImageSource<'a>

fn from(value: &'a Cow<'a, str>) -> ImageSource<'a>

Converts to this type from the input type.

impl<'a> From<&'a String> for ImageSource<'a>

fn from(value: &'a String) -> ImageSource<'a>

Converts to this type from the input type.

impl<'a> From<&'a str> for ImageSource<'a>

fn from(value: &'a str) -> ImageSource<'a>

Converts to this type from the input type.

impl<T> From<(&'static str, T)> for ImageSource<'static>

where T: Into<Bytes>,

fn from(_: (&'static str, T)) -> ImageSource<'static>

Converts to this type from the input type.

impl<T> From<(Cow<'static, str>, T)> for ImageSource<'static>

where T: Into<Bytes>,

fn from(_: (Cow<'static, str>, T)) -> ImageSource<'static>

Converts to this type from the input type.

impl<T> From<(String, T)> for ImageSource<'static>

where T: Into<Bytes>,

fn from(_: (String, T)) -> ImageSource<'static>

Converts to this type from the input type.

impl<'a> From<Cow<'a, str>> for ImageSource<'a>

fn from(value: Cow<'a, str>) -> ImageSource<'a>

Converts to this type from the input type.

impl From<String> for ImageSource<'static>

fn from(value: String) -> ImageSource<'static>

Converts to this type from the input type.

impl<T> From<T> for ImageSource<'static>

where T: Into<SizedTexture>,

fn from(value: T) -> ImageSource<'static>

Converts to this type from the input type.