Function fltk::utils::hex2rgb

source · 
pub const fn hex2rgb(val: u32) -> (u8, u8, u8)
Expand description

Convenience function to convert hex to rgb. Example:

use fltk::utils::hex2rgb;
let (r, g, b) = hex2rgb(0x000000);
Examples found in repository?
examples/rgb.rs (line 15)
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fn main() {
    let app = app::App::default();
    let mut wind = window::Window::default().with_size(400, 400);
    let mut frame = frame::Frame::default_fill();
    wind.make_resizable(true);
    wind.end();
    wind.show();
    frame.draw(move |f| {
        let mut fb: Vec<u8> = vec![0u8; (f.w() * f.h() * 4) as usize];
        for (iter, pixel) in fb.chunks_exact_mut(4).enumerate() {
            let x = iter % f.w() as usize;
            let y = iter / f.w() as usize;
            let (red, green, blue) = utils::hex2rgb((x ^ y) as u32);
            pixel.copy_from_slice(&[red, green, blue, 255]);
        }
        let mut image = image::RgbImage::new(&fb, f.w(), f.h(), ColorDepth::Rgba8)
            .unwrap()
            .to_srgb_image()
            .unwrap()
            .blur(50)
            .unwrap()
            .convert(ColorDepth::Rgb8)
            .unwrap();
        image.draw(f.x(), f.y(), f.width(), f.height());
    });

    app.run().unwrap();
}
More examples
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examples/defaults.rs (line 4)
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fn main() {
    let (r, g, b) = utils::hex2rgb(0xfafdf3);

    let app = app::App::default();

    // global theming
    app::background(r, g, b); // background color. For input/output and text widgets, use app::background2
    app::foreground(20, 20, 20); // labels
    app::set_font(enums::Font::Courier);
    app::set_font_size(16);
    app::set_frame_type(enums::FrameType::RFlatBox);
    app::set_visible_focus(false);

    // regular widget code
    let mut win = window::Window::default().with_size(400, 300);
    let frame = frame::Frame::new(0, 0, 400, 200, "Defaults");
    let flex = group::Flex::default()
        .with_size(400, 50)
        .below_of(&frame, 50);
    let mut but1 = button::Button::default().with_label("Button1");
    but1.set_color(enums::Color::Yellow);
    but1.set_down_frame(enums::FrameType::RFlatBox);
    frame::Frame::default();
    let mut but2 = button::Button::default().with_label("Button2");
    but2.set_color(enums::Color::Yellow);
    but2.set_down_frame(enums::FrameType::RFlatBox);
    flex.end();

    win.end();
    win.show();

    app.run().unwrap();
}