Function fltk::app::background

source · 
pub fn background(r: u8, g: u8, b: u8)
Expand description

Set the background color

Examples found in repository?
examples/tabs.rs (line 43)
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fn main() {
    let app = app::App::default().with_scheme(app::Scheme::Gtk);
    app::background(221, 221, 221);

    let mut wind = Window::default()
        .with_size(500, 450)
        .with_label("Tabs")
        .center_screen();

    draw_gallery();

    wind.make_resizable(true);
    wind.end();
    wind.show();

    app.run().unwrap();
}
More examples
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examples/custom_dial.rs (line 66)
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fn main() {
    let app = app::App::default();
    app::background(255, 255, 255);
    let mut win = window::Window::default().with_size(400, 300);
    let mut dial = MyDial::new(100, 100, 200, 200, "CPU Load %");
    dial.set_label_size(22);
    dial.set_label_color(Color::from_u32(0x797979));
    win.end();
    win.show();

    // get the cpu load value from somewhere, then call dial.set_value() in a callback or event loop
    dial.set_value(10);

    app.run().unwrap();
}
examples/rounded_images.rs (line 48)
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fn main() {
    let app = app::App::default().with_scheme(app::Scheme::Gleam);
    app::background(0, 0, 0);
    let image = image::SharedImage::load("screenshots/calc2.jpg")
        .unwrap()
        .to_rgb()
        .unwrap();

    let mut wind = window::Window::new(100, 100, 800, 400, "Hello from rust");
    let mut pack = group::Pack::default()
        .with_size(800, 200)
        .center_of_parent();
    pack.set_type(group::PackType::Horizontal);
    for i in 1..=4 {
        let color_depth = enums::ColorDepth::from_u8(i).unwrap();
        let image = image.convert(color_depth).unwrap();
        RoundImageBox::new(100, image);
    }
    pack.end();
    wind.end();
    wind.show();

    app.run().unwrap();
}
examples/defaults.rs (line 9)
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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();
}
examples/counter3.rs (line 34)
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fn main() {
    let app = app::App::default();
    let mut win = window::Window::default()
        .with_size(WIDTH, HEIGHT)
        .with_label("Flutter-like!");
    let mut bar =
        frame::Frame::new(0, 0, WIDTH, 60, "  FLTK App!").with_align(Align::Left | Align::Inside);
    let mut text = frame::Frame::default()
        .with_size(100, 40)
        .center_of(&win)
        .with_label("You have pushed the button this many times:");
    let mut count = frame::Frame::default()
        .size_of(&text)
        .below_of(&text, 0)
        .with_label("0");
    let mut but = button::Button::new(WIDTH - 100, HEIGHT - 100, 60, 60, "@+6plus");
    win.end();
    win.make_resizable(true);
    win.show();

    // Theming
    app::background(255, 255, 255);
    app::set_visible_focus(false);

    bar.set_frame(FrameType::FlatBox);
    bar.set_label_size(22);
    bar.set_label_color(Color::White);
    bar.set_color(BLUE);
    bar.draw(|b| {
        draw::set_draw_rgb_color(211, 211, 211);
        draw::draw_rectf(0, b.height(), b.width(), 3);
    });

    text.set_label_size(18);
    text.set_label_font(Font::Times);

    count.set_label_size(36);
    count.set_label_color(GRAY);

    but.set_color(BLUE);
    but.set_selection_color(SEL_BLUE);
    but.set_label_color(Color::White);
    but.set_frame(FrameType::OFlatFrame);
    // End theming

    but.set_callback(move |_| {
        let label = (count.label().parse::<i32>().unwrap() + 1).to_string();
        count.set_label(&label);
    });

    app.run().unwrap();
}
examples/counter.rs (line 12)
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fn main() {
    let app = app::App::default().with_scheme(app::Scheme::Gtk);
    app::background(0x62, 0x00, 0xee);
    app::set_visible_focus(false);

    let mut wind = Window::default().with_size(160, 200).with_label("Counter");
    let mut frame = Frame::default()
        .with_size(100, 40)
        .center_of(&wind)
        .with_label("0");
    frame.set_label_size(20);
    let mut but_inc = Button::default()
        .size_of(&frame)
        .above_of(&frame, 0)
        .with_label("+");
    let mut but_dec = Button::default()
        .size_of(&frame)
        .below_of(&frame, 0)
        .with_label("-");
    // wind.make_resizable(true);
    wind.end();
    wind.show();

    but_inc.set_callback({
        let mut frame = frame.clone();
        move |_| {
            let label = (frame.label().parse::<i32>().unwrap() + 1).to_string();
            frame.set_label(&label);
        }
    });

    but_dec.set_callback(move |_| {
        let label = (frame.label().parse::<i32>().unwrap() - 1).to_string();
        frame.set_label(&label);
    });

    // Theming
    wind.set_color(Color::White);
    but_inc.set_color(Color::from_u32(0x304FFE));
    but_inc.set_selection_color(Color::Green);
    but_inc.set_label_size(20);
    but_inc.set_frame(FrameType::FlatBox);
    but_inc.set_label_color(Color::White);
    but_dec.set_color(Color::from_u32(0x2962FF));
    but_dec.set_selection_color(Color::Red);
    but_dec.set_frame(FrameType::FlatBox);
    but_dec.set_label_size(20);
    but_dec.set_label_color(Color::White);
    // End theming

    app.run().unwrap();
}
Additional examples can be found in: