Enum ImagePlaceholder 

pub enum ImagePlaceholder {
    Color(Color),
    Skeleton(Skeleton),
    Image(Box<Image>),
}

What stands in for an image while it is on its way.

Not crate::Placeholder, which is the design tool’s crossed box: this one is the slot Image::placeholder fills.

Three, because they are the three things anybody puts there: a flat colour, the shimmering block a list of thumbnails wants, or a smaller picture — a blurred thumbnail, a low-resolution copy, the one already in the cache.

It is not a widget slot, and that is deliberate: Image carries no message type (impl<Msg> Widget<Msg> for Image), which is what lets one be built once and dropped into any tree. Taking an arbitrary child would make it Image<Msg> and cost that everywhere, to buy a fourth case nobody has asked for.

Variants

Color(Color)

A flat colour.

Skeleton(Skeleton)

The shimmering block, at whatever shape it was built with.

Image(Box<Image>)

Another picture: a blur, a thumbnail, the cached copy.

Trait Implementations

impl From<Color> for ImagePlaceholder

fn from(color: Color) -> Self

Converts to this type from the input type.

impl From<Image> for ImagePlaceholder

fn from(image: Image) -> Self

Converts to this type from the input type.

impl From<Skeleton> for ImagePlaceholder

fn from(skeleton: Skeleton) -> Self

Converts to this type from the input type.