notcurses/rust/examples/poc-direct.rs

//! based on the proof of concept at ../../src/poc/direct.c

use libnotcurses_sys::*;

fn main() {
    let ncd = NcDirect::new();

    let dimy = ncd.dim_y();
    let dimx = ncd.dim_x();
    for _ in 0..dimy {
        for _ in 0..dimx {
            printf!("X");
        }
    }
    ncd.flush();

    let mut ret = 0;
    ret |= ncd.fg_rgb(0xff8080);
    ret |= ncd.styles_on(NCSTYLE_STANDOUT);
    printf!(" erp erp \n");
    ret |= ncd.fg_rgb(0x80ff80);
    printf!(" erp erp \n");
    ret |= ncd.styles_off(NCSTYLE_STANDOUT);
    printf!(" erp erp \n");
    ret |= ncd.fg_rgb(0xff8080);
    printf!(" erp erp \n");
    ret |= ncd.cursor_right(dimx / 2);
    ret |= ncd.cursor_up(dimy / 2);
    printf!(" erperperp! \n");

    let (mut y, x);

    if let Some((_y, _x)) = ncd.cursor_yx() {
        y = _y;
        x = _x;
        printf!("\n\tRead cursor position: y: %d x: %d\n", y, x);
        y += 2;
        while y > 3 {
            ret = NCRESULT_ERR;
            let up = if y >= 3 { 3 } else { y };
            if ncd.cursor_up(up) == NCRESULT_ERR {
                break;
            }
            ncd.flush();
            y -= up;

            let newy;
            if let Some((_y, _)) = ncd.cursor_yx() {
                newy = _y;
            } else {
                break;
            }
            if newy != y {
                eprintln!("Expected {}, got {}", y, newy);
                break;
            }
            printf!("\n\tRead cursor position: y: %d x: %d\n", newy, x);
            y += 2;
            ret = NCRESULT_OK;
        }
    } else {
        ret = NCRESULT_ERR - 10;
    }

    // println!("ret={}", ret); // DEBUG

    ncd.stop();
}