Enum piet_common::ImageFormat

#[non_exhaustive]
pub enum ImageFormat {
    Grayscale,
    Rgb,
    RgbaSeparate,
    RgbaPremul,
}

The pixel format for bitmap images.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Grayscale

1 byte per pixel.

For example, a white pixel has value 0xff.

Rgb

3 bytes per pixel, in RGB order.

For example, a red pixel consists of three bytes [0xff, 0, 0] independent of the system’s endianness.

RgbaSeparate

4 bytes per pixel, in RGBA order, with separate alpha.

For example, a full-intensity red pixel with 50% transparency consists of four bytes [0xff, 0, 0, 0x80] independent of the system’s endianness.

RgbaPremul

4 bytes per pixel, in RGBA order, with premultiplied alpha.

For example, a full-intensity red pixel with 50% transparency consists of four bytes [0x80, 0, 0, 0x80] independent of the system’s endianness.

Implementations

impl ImageFormat

pub fn bytes_per_pixel(self) -> usize

The number of bytes required to represent a pixel in this format.

Trait Implementations

impl Clone for ImageFormat

fn clone(&self) -> ImageFormat

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ImageFormat

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

Formats the value using the given formatter.

impl PartialEq<ImageFormat> for ImageFormat

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ImageFormat

impl Eq for ImageFormat

impl StructuralEq for ImageFormat

impl StructuralPartialEq for ImageFormat