Struct embedded_graphics::image::ImageRaw

pub struct ImageRaw<'a, C, BO = BigEndian> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder,  { /* private fields */ }

An image constructed from a slice of raw pixel data.

The ImageRaw struct can be used to construct an image from a slice of raw image data. The storage format is determined by the PixelColor type C and the ByteOrder BO. The byteorder doesn’t need to be specified for colors which aren’t stored in multiple bytes.

For color types with less than 8 bits per pixels the start of each row is aligned to the next whole byte.

Details about the conversion of raw data to color types are explained in the raw module documentation.

As ImageRaw does not implement [Drawable], it cannot be directly drawn to a supported display. The Image struct should be used to wrap an ImageRaw to make it drawable.

Examples

Draw a 1BPP image

This example creates an image from 1 bit per pixel data.

use embedded_graphics::{
    image::{Image, ImageRaw},
    pixelcolor::BinaryColor,
    prelude::*,
};

/// Image data with 12 x 5 pixels.
/// The data for each row is 12 bits long and is padded with zeros on the
/// end because each row needs to contain a whole number of bytes.
#[rustfmt::skip]
const DATA: &[u8] = &[
    0b11101111, 0b0101_0000,
    0b10001000, 0b0101_0000,
    0b11101011, 0b0101_0000,
    0b10001001, 0b0101_0000,
    0b11101111, 0b0101_0000,
];

// The type annotation `ImageRaw<BinaryColor>` is used to specify the format
// of the stored raw data (`PixelColor::Raw`) and which color type the
// raw data gets converted into.
let raw_image: ImageRaw<BinaryColor> = ImageRaw::new(DATA, 12, 5);

let image: Image<_, BinaryColor> = Image::new(&raw_image, Point::zero());

let mut display = Display::default();

image.draw(&mut display)?;

Draw an image that uses multibyte pixel encoding

Colors with more than one byte per pixel need an additional type annotation for the byte order. For convenience, the ImageRawBE and ImageRawLE type aliases can be used to abbreviate the type.

use embedded_graphics::{
    image::{Image, ImageRaw, ImageRawBE, ImageRawLE},
    pixelcolor::{
        raw::{BigEndian, LittleEndian},
        Rgb565, Rgb888,
    },
    prelude::*,
};

// Rgb888 image with 24 bits per pixel and big endian byte order
let image1: ImageRawBE<Rgb888> = ImageRaw::new(DATA, 8, 8);
// or:
let image2: ImageRaw<Rgb888, BigEndian> = ImageRaw::new(DATA, 8, 8);

// Rgb565 image with 16 bits per pixel and little endian byte order
let image1: ImageRawLE<Rgb565> = ImageRaw::new(DATA, 16, 6);
// or:
let image2: ImageRaw<Rgb565, LittleEndian> = ImageRaw::new(DATA, 16, 6);

Implementations

impl<'a, C, BO> ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

pub fn new(data: &'a [u8], width: u32, height: u32) -> Self

Creates a new image.

Panics

If data doesn’t have the correct length.

Trait Implementations

impl<'a, C: Clone, BO: Clone> Clone for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

fn clone(&self) -> ImageRaw<'a, C, BO>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, C: Debug, BO: Debug> Debug for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

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

Formats the value using the given formatter.

impl<'a, C: Hash, BO: Hash> Hash for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<C, BO> ImageDimensions for ImageRaw<'_, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

fn width(&self) -> u32

Get the width in pixels of an image

fn height(&self) -> u32

Get the height in pixels of an image

impl<'a, 'b, C, BO> IntoIterator for &'a ImageRaw<'b, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder,
    RawDataIter<'b, C::Raw, BO>: Iterator<Item = C::Raw>, 

type Item = Pixel<C>

The type of the elements being iterated over.

type IntoIter = ImageRawIterator<'a, 'b, C, BO>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<'a, 'b, C, BO> IntoPixelIter<C> for &'a ImageRaw<'b, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder,
    RawDataIter<'b, C::Raw, BO>: Iterator<Item = C::Raw>, 

type PixelIterator = ImageRawIterator<'a, 'b, C, BO>

Iterator over pixels in the image

fn pixel_iter(self) -> Self::PixelIterator

Get an iterator over the pixels of the image

impl<'a, C: Ord, BO: Ord> Ord for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

fn cmp(&self, other: &ImageRaw<'a, C, BO>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<'a, C: PartialEq, BO: PartialEq> PartialEq<ImageRaw<'a, C, BO>> for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

fn eq(&self, other: &ImageRaw<'a, C, BO>) -> bool

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

fn ne(&self, other: &ImageRaw<'a, C, BO>) -> bool

This method tests for !=.

impl<'a, C: PartialOrd, BO: PartialOrd> PartialOrd<ImageRaw<'a, C, BO>> for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

fn partial_cmp(&self, other: &ImageRaw<'a, C, BO>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, C: Copy, BO: Copy> Copy for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

impl<'a, C: Eq, BO: Eq> Eq for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

impl<'a, C, BO> StructuralEq for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder, 

impl<'a, C, BO> StructuralPartialEq for ImageRaw<'a, C, BO> where
    C: PixelColor + From<<C as PixelColor>::Raw>,
    BO: ByteOrder,