buffer-graphics-lib 0.19.1

Simple graphics library for buffers
Documentation 
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use crate::image_loading::ImageWrapperError::*;
use crate::prelude::*;
use image_lib::{DynamicImage, ImageError, ImageFormat};
use std::io::{BufRead, Seek};
use std::path::Path;
use thiserror::Error;

#[derive(Error, Debug)]
pub enum ImageWrapperError {
    #[error("Loading image")]
    GraphicsLibError(#[from] GraphicsError),
    #[error("Reading image")]
    ImageLibError(#[from] ImageError),
}

/// Load image bytes (from png, bmp, etc) as [Image]
/// Useful with include_bytes!()
pub fn load_image<R: BufRead + Seek>(
    r: R,
    format: ImageFormat,
) -> Result<Image, ImageWrapperError> {
    convert_image(image_lib::load(r, format).map_err(|e| ImageLibError(e))?)
}

/// Load an image (png, bmp, etc) as [Image]
pub fn open_image<P: AsRef<Path>>(path: P) -> Result<Image, ImageWrapperError> {
    convert_image(image_lib::open(path).map_err(|e| ImageLibError(e))?)
}

///Convert a [DynamicImage] from the `image` crate into an [Image]
pub fn convert_image(image: DynamicImage) -> Result<Image, ImageWrapperError> {
    let width = image.width() as usize;
    let height = image.height() as usize;
    let pixels = image
        .into_rgba8()
        .chunks_exact(4)
        .map(|px| Color::new(px[0], px[1], px[2], px[3]))
        .collect();

    Image::new(pixels, width, height).map_err(GraphicsLibError)
}