smart-home/display/firmware/build.rs

extern crate epd_assets as assets;

use std::env;
use std::fs::File;
use std::io::Write;
use std::path::Path;

fn main() {
    let out_dir = env::var("OUT_DIR").unwrap();
    let dest_path = Path::new(&out_dir).join("assets.rs");
    let mut f = File::create(&dest_path).unwrap();

    let mut font = assets::Font::load("assets/Roboto-Regular.ttf").unwrap();

    let epd_font = font.generate("ROBOTO_100", 100, " 0123456789:", "crate::epd");
    f.write_all(epd_font.as_bytes()).unwrap();

    let epd_font = font.generate(
        "ROBOTO_30",
        30,
        " abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789:.",
        "crate::epd",
    );

    f.write_all(epd_font.as_bytes()).unwrap();

    let clock_image = assets::Image::load("assets/ic_alarm_black_36dp.png").unwrap();

    f.write_all(
        clock_image
            .generate_bitmap("ALARM_CLOCK_36", "crate::epd")
            .as_bytes(),
    )
    .unwrap();
}