trezor-firmware/core/embed/rust/src/trezorhal/display.rs

extern "C" {
    // trezorhal/display.c
    fn display_backlight(val: cty::c_int) -> cty::c_int;
    fn display_text(
        x: cty::c_int,
        y: cty::c_int,
        text: *const cty::c_char,
        textlen: cty::c_int,
        font: cty::c_int,
        fgcolor: cty::uint16_t,
        bgcolor: cty::uint16_t,
    );
    fn display_text_width(
        text: *const cty::c_char,
        textlen: cty::c_int,
        font: cty::c_int,
    ) -> cty::c_int;
    fn display_bar(x: cty::c_int, y: cty::c_int, w: cty::c_int, h: cty::c_int, c: cty::uint16_t);
    fn display_bar_radius(
        x: cty::c_int,
        y: cty::c_int,
        w: cty::c_int,
        h: cty::c_int,
        c: cty::uint16_t,
        b: cty::uint16_t,
        r: cty::uint8_t,
    );
}

const WIDTH: i32 = 240;
const HEIGHT: i32 = 240;

pub fn width() -> i32 {
    WIDTH
}

pub fn height() -> i32 {
    HEIGHT
}

pub fn backlight(val: i32) -> i32 {
    unsafe { display_backlight(val) }
}

pub fn text(baseline_x: i32, baseline_y: i32, text: &[u8], font: i32, fgcolor: u16, bgcolor: u16) {
    unsafe {
        display_text(
            baseline_x,
            baseline_y,
            text.as_ptr() as _,
            text.len() as _,
            font,
            fgcolor,
            bgcolor,
        )
    }
}

pub fn text_width(text: &[u8], font: i32) -> i32 {
    unsafe { display_text_width(text.as_ptr() as _, text.len() as _, font) }
}

pub fn bar(x: i32, y: i32, w: i32, h: i32, fgcolor: u16) {
    unsafe { display_bar(x, y, w, h, fgcolor) }
}

pub fn bar_radius(x: i32, y: i32, w: i32, h: i32, fgcolor: u16, bgcolor: u16, radius: u8) {
    unsafe { display_bar_radius(x, y, w, h, fgcolor, bgcolor, radius) }
}