Enum piet::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

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 !=.

impl Copy for ImageFormat

impl StructuralPartialEq for ImageFormat