IntroToWebAuthoring/src/lib.rs

// mod activities;
mod app;
mod render;
mod views;

use wasm_bindgen::{Clamped, prelude::*};
use web_sys::ImageData;

// use render::Renderer;
use render::buffer::ImgBuffer;
use render::rand::Rnd;

use crate::{
    app::{App, Cursor, set_cursor},
    render::Renderer,
};

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_namespace = console)]
    pub fn log(s: &str);
}

#[macro_export]
macro_rules! log {
    ($($t:tt)*) => (log(&format_args!($($t)*).to_string()))
}

#[wasm_bindgen]
pub fn init(canvas: &web_sys::HtmlCanvasElement, width: u32, height: u32) -> App {
    let (cwidth, cheight, dist_x, dist_y) = render::calc_resolution(width, height);
    canvas.set_width(cwidth);
    canvas.set_height(cheight);

    log!("WASM Successfully initialized!");
    // set_cursor(Cursor::Auto);

    let mut renderer = Renderer {
        ctx: canvas
            .get_context("2d")
            .unwrap()
            .unwrap()
            .dyn_into::<web_sys::CanvasRenderingContext2d>()
            .unwrap(),
        img: ImgBuffer::new(width, height),
        rand: Rnd::new(9825782),

        canvas_width: cwidth,
        canvas_height: cheight,
        actual_width: width,
        actual_height: height,

        distortion_x: dist_x,
        distortion_y: dist_y,
    };

    renderer.resize(width, height);

    App::new(renderer)
}

#[wasm_bindgen]
pub fn resize(app: &mut App, width: u32, height: u32) {
    app.resize(width, height);
}

#[wasm_bindgen]
pub fn draw(app: &mut App) {
    // app.renderer.img.randomize(&mut app.renderer.rand);
    app.draw();
}

#[wasm_bindgen]
pub fn click(app: &mut App, x: f32, y: f32) {
    // ctx.img.randomize(&mut ctx.rand);
    // draw::draw(ctx);
    app.l_click(x, y);
}

#[wasm_bindgen]
pub fn mouse_move(app: &mut App, x: f32, y: f32) {
    app.mouse_move(x, y);
}