Function canvas_text_ex 

pub fn canvas_text_ex(
    x: f32,
    y: f32,
    size: f32,
    r: u8,
    g: u8,
    b: u8,
    a: u8,
    family: &str,
    weight: u32,
    style: u32,
    align: u32,
    text: &str,
)

Draw text with explicit family, weight (CSS 100..=900; 0 = default 400), style (FONT_STYLE_NORMAL / FONT_STYLE_ITALIC / FONT_STYLE_OBLIQUE), and horizontal alignment (TEXT_ALIGN_LEFT / TEXT_ALIGN_CENTER / TEXT_ALIGN_RIGHT).

Pass an empty family to use the system UI font. For TEXT_ALIGN_CENTER and TEXT_ALIGN_RIGHT, x is the centre and the right edge of the line respectively.