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use wasm_bindgen::prelude::*;
use web_sys::{CanvasRenderingContext2d, ImageData, HtmlCanvasElement};
use wasm_bindgen::Clamped;
use image::{GenericImage, GenericImageView};
use base64::{decode, encode};
use serde::{Serialize, Deserialize};
#[wasm_bindgen]
#[derive(Serialize, Deserialize, Debug)]
pub struct PhotonImage {
raw_pixels: Vec<u8>,
width: u32,
height: u32,
}
#[wasm_bindgen]
impl PhotonImage {
#[wasm_bindgen(constructor)]
pub fn new(raw_pixels: Vec<u8>, width: u32, height: u32) -> PhotonImage {
return PhotonImage { raw_pixels: raw_pixels, width: width, height: height};
}
pub fn new_from_base64(base64: &str) -> PhotonImage {
let image = base64_to_image(base64);
return image;
}
pub fn new_from_byteslice(vec: Vec<u8>) -> PhotonImage {
let slice = vec.as_slice();
let img = image::load_from_memory(slice).unwrap();
let raw_pixels = img.raw_pixels();
return PhotonImage { raw_pixels: raw_pixels, width: img.width(), height: img.height()};
}
pub fn get_width(&self) -> u32 {
self.width
}
pub fn get_raw_pixels(&self) -> Vec<u8> {
self.raw_pixels.clone()
}
pub fn get_height(&self) -> u32 {
self.height
}
pub fn get_base64(&self) -> String {
let mut img = helpers::dyn_image_from_raw(&self);
img = image::ImageRgba8(img.to_rgba());
let mut buffer = vec![];
img.write_to(&mut buffer, image::ImageOutputFormat::PNG);
let base64 = encode(&buffer);
let res_base64 = format!("data:image/png;base64,{}", base64.replace("\r\n", ""));
res_base64
}
pub fn get_image_data(&mut self) -> ImageData {
let new_img_data = ImageData::new_with_u8_clamped_array_and_sh(Clamped(&mut self.raw_pixels), self.width, self.height).unwrap();
new_img_data
}
pub fn set_imgdata(&mut self, img_data: ImageData) {
let width = img_data.width();
let height = img_data.height();
let raw_pixels = to_raw_pixels(img_data);
self.width = width;
self.height = height;
self.raw_pixels = raw_pixels;
}
}
impl From<ImageData> for PhotonImage {
fn from(imgdata: ImageData) -> Self {
let width = imgdata.width();
let height = imgdata.height();
let raw_pixels = to_raw_pixels(imgdata);
return PhotonImage {raw_pixels: raw_pixels, width: width, height: height}
}
}
#[wasm_bindgen]
#[derive(Serialize, Deserialize, Debug)]
pub struct Rgb {
r: u8,
g: u8,
b: u8
}
#[wasm_bindgen]
impl Rgb {
#[wasm_bindgen(constructor)]
pub fn new(r: u8, g: u8, b: u8) -> Rgb {
return Rgb {r: r, g: g, b: b}
}
pub fn set_red(&mut self, r: u8) {
self.r = r;
}
pub fn set_green(&mut self, g: u8) {
self.g = g;
}
pub fn set_blue(&mut self, b: u8) {
self.b = b;
}
pub fn get_red(&self) -> u8 {
self.r
}
pub fn get_green(&self) -> u8 {
self.g
}
pub fn get_blue(&self) -> u8 {
self.b
}
}
impl From<Vec<u8>> for Rgb {
fn from(vec: Vec<u8>) -> Self {
if vec.len() != 3 {
panic!("Vec length must be equal to 3.")
}
let rgb = Rgb::new(vec[0], vec[1], vec[2]);
rgb
}
}
#[wasm_bindgen]
pub fn run() -> Result<(), JsValue> {
set_panic_hook();
let window = web_sys::window().expect("No Window found, should have a Window");
let document = window.document().expect("No Document found, should have a Document");
let p: web_sys::Node = document.create_element("p")?.into();
p.set_text_content(Some("You're successfully running WASM!"));
let body = document.body().expect("ERR: No body found, should have a body");
let body: &web_sys::Node = body.as_ref();
body.append_child(&p)?;
Ok(())
}
#[wasm_bindgen]
pub fn get_image_data(canvas: &HtmlCanvasElement, ctx: &CanvasRenderingContext2d) -> ImageData {
set_panic_hook();
let width = canvas.width();
let height = canvas.height();
let data = ctx.get_image_data(0.0, 0.0, width as f64, height as f64).unwrap();
let _vec_data = data.data().to_vec();
return data;
}
#[wasm_bindgen]
pub fn putImageData(canvas: HtmlCanvasElement, ctx: CanvasRenderingContext2d, mut new_image: PhotonImage) {
let new_img_data = ImageData::new_with_u8_clamped_array_and_sh(Clamped(&mut new_image.raw_pixels), canvas.width(), canvas.height());
ctx.put_image_data(&new_img_data.unwrap(), 0.0, 0.0);
}
#[wasm_bindgen]
#[no_mangle]
pub fn open_image(canvas: HtmlCanvasElement, ctx: CanvasRenderingContext2d) -> PhotonImage {
let imgdata = get_image_data(&canvas, &ctx);
let raw_pixels = to_raw_pixels(imgdata);
return PhotonImage {raw_pixels: raw_pixels, width: canvas.width(), height: canvas.height() }
}
#[wasm_bindgen]
pub fn to_raw_pixels(imgdata: ImageData) -> Vec<u8> {
let img_vec = imgdata.data().to_vec();
return img_vec;
}
#[wasm_bindgen]
pub fn base64_to_image(base64: &str) -> PhotonImage {
let base64_to_vec: Vec<u8> = base64_to_vec(base64);
let slice = base64_to_vec.as_slice();
let mut img = image::load_from_memory(slice).unwrap();
img = image::ImageRgba8(img.to_rgba());
let raw_pixels = img.raw_pixels();
return PhotonImage { raw_pixels: raw_pixels, width: img.width(), height: img.height()};
}
#[wasm_bindgen]
pub fn base64_to_vec(base64: &str) -> Vec<u8> {
let vec = decode(base64).unwrap();
return vec;
}
#[wasm_bindgen]
pub fn to_image_data(photon_image: PhotonImage) -> ImageData {
let mut raw_pixels = photon_image.raw_pixels;
let width = photon_image.width;
let height = photon_image.height;
let new_img_data = ImageData::new_with_u8_clamped_array_and_sh(Clamped(&mut raw_pixels), width, height).unwrap();
return new_img_data;
}
fn set_panic_hook() {
#[cfg(feature = "console_error_panic_hook")]
console_error_panic_hook::set_once();
}
pub mod channels;
pub mod effects;
pub mod transform;
pub mod conv;
pub mod filters;
pub mod monochrome;
pub mod native;
pub mod text;
pub mod colour_spaces;
pub mod multiple;
pub mod noise;
pub mod helpers;
mod tests;