Struct BitmapInfo 

pub struct BitmapInfo {
    pub pixels: Size,
    pub scale: f64,
    pub format: Option<ImageFormat>,
    pub has_alpha: bool,
}

What a decoded image is, in the terms every backend can answer (Toolkit::image_info, docs/images.md).

pixels is the image’s own pixel size, not the points it draws at: an asset that stages at 2× reports twice its point size and a scale of 2, so an app sizing a frame divides. Bytes carry no density, so a decoded buffer always answers scale: 1.0.

Fields

pixels: Size

scale: f64

Pixels per point (1.0 for decoded bytes; 2 or 3 for a catalog/drawable asset that staged a density variant).

format: Option<ImageFormat>

The encoded format it came from, where the backend knows or ImageFormat::sniff said.

has_alpha: bool

Trait Implementations

impl Clone for BitmapInfo

fn clone(&self) -> BitmapInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BitmapInfo

impl Debug for BitmapInfo

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

Formats the value using the given formatter.

impl Default for BitmapInfo

fn default() -> BitmapInfo

Returns the “default value” for a type.

impl PartialEq for BitmapInfo

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BitmapInfo