Function poke_it

src/lib.rs:122–178

()

#[test]
fn poke_it() {
    let width = 10usize;
    let height = 10usize;
    let mut fakebitmap = vec![RGBA::new(255, 255, 255, 255); width * height];

    fakebitmap[0].r = 0x55;
    fakebitmap[0].g = 0x66;
    fakebitmap[0].b = 0x77;

    // Configure the library
    let mut liq = Attributes::new();
    liq.set_speed(5).unwrap();
    liq.set_quality(70, 99).unwrap();
    liq.set_min_posterization(1).unwrap();
    assert_eq!(1, liq.min_posterization());
    liq.set_min_posterization(0).unwrap();

    use std::sync::atomic::AtomicBool;
    use std::sync::atomic::Ordering::SeqCst;
    use std::sync::Arc;

    let log_called = Arc::new(AtomicBool::new(false));
    let log_called2 = log_called.clone();
    liq.set_log_callback(move |_attr, _msg| {
        log_called2.store(true, SeqCst);
    });

    let prog_called = Arc::new(AtomicBool::new(false));
    let prog_called2 = prog_called.clone();
    liq.set_progress_callback(move |_perc| {
        prog_called2.store(true, SeqCst);
        ControlFlow::Continue
    });

    // Describe the bitmap
    let img = &mut liq.new_image(&fakebitmap[..], width, height, 0.0).unwrap();

    // The magic happens in quantize()
    let mut res = match liq.quantize(img) {
        Ok(res) => res,
        Err(err) => panic!("Quantization failed, because: {err:?}"),
    };

    // Enable dithering for subsequent remappings
    res.set_dithering_level(1.0).unwrap();

    // You can reuse the result to generate several images with the same palette
    let (palette, pixels) = res.remapped(img).unwrap();

    assert_eq!(width * height, pixels.len());
    assert_eq!(100, res.quantization_quality().unwrap());
    assert_eq!(RGBA { r: 255, g: 255, b: 255, a: 255 }, palette[0]);
    assert_eq!(RGBA { r: 0x55, g: 0x66, b: 0x77, a: 255 }, palette[1]);

    assert!(log_called.load(SeqCst));
    assert!(prog_called.load(SeqCst));
}