Function fltk::draw::set_draw_color

source · 
pub fn set_draw_color(color: Color)
Expand description

Sets the drawing color

Examples found in repository?
examples/table.rs (line 56)
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fn draw_header(txt: &str, x: i32, y: i32, w: i32, h: i32) {
    draw::push_clip(x, y, w, h);
    draw::draw_box(
        enums::FrameType::ThinUpBox,
        x,
        y,
        w,
        h,
        enums::Color::FrameDefault,
    );
    draw::set_draw_color(enums::Color::Black);
    draw::set_font(enums::Font::Helvetica, 14);
    draw::draw_text2(txt, x, y, w, h, enums::Align::Center);
    draw::pop_clip();
}

// The selected flag sets the color of the cell to a grayish color, otherwise white
fn draw_data(txt: &str, x: i32, y: i32, w: i32, h: i32, selected: bool) {
    draw::push_clip(x, y, w, h);
    if selected {
        draw::set_draw_color(enums::Color::from_u32(0x00D3_D3D3));
    } else {
        draw::set_draw_color(enums::Color::White);
    }
    draw::draw_rectf(x, y, w, h);
    draw::set_draw_color(enums::Color::Gray0);
    draw::set_font(enums::Font::Helvetica, 14);
    draw::draw_text2(txt, x, y, w, h, enums::Align::Center);
    draw::draw_rect(x, y, w, h);
    draw::pop_clip();
}
More examples
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examples/shapedwindow_taskbar.rs (line 122)
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fn prep_shape(w: i32, h: i32) -> image::RgbImage {
    let surf = surface::ImageSurface::new(w, h, false);

    surface::ImageSurface::push_current(&surf);

    draw::set_draw_color(enums::Color::Black);
    draw::draw_rectf(-1, -1, w + 2, h + 2);

    draw::set_draw_color(enums::Color::White);
    draw::draw_rounded_rectf(0, 0, w, h, 16);

    let img = surf.image().unwrap();

    surface::ImageSurface::pop_current();

    img
}
examples/spreadsheet.rs (line 122)
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    fn draw_header(txt: &str, x: i32, y: i32, w: i32, h: i32) {
        draw::push_clip(x, y, w, h);
        draw::draw_box(
            enums::FrameType::ThinUpBox,
            x,
            y,
            w,
            h,
            enums::Color::FrameDefault,
        );
        draw::set_draw_color(enums::Color::Black);
        draw::set_font(enums::Font::Helvetica, 14);
        draw::draw_text2(txt, x, y, w, h, enums::Align::Center);
        draw::pop_clip();
    }

    // The selected flag sets the color of the cell to a grayish color, otherwise white
    fn draw_data(txt: &str, x: i32, y: i32, w: i32, h: i32, selected: bool) {
        draw::push_clip(x, y, w, h);
        if selected {
            draw::set_draw_color(enums::Color::from_u32(0x00D3_D3D3));
        } else {
            draw::set_draw_color(enums::Color::White);
        }
        draw::draw_rectf(x, y, w, h);
        draw::set_draw_color(enums::Color::Gray0);
        draw::set_font(enums::Font::Helvetica, 14);
        draw::draw_text2(txt, x, y, w, h, enums::Align::Center);
        draw::draw_rect(x, y, w, h);
        draw::pop_clip();
    }
examples/custom_widgets.rs (line 78)
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    fn draw(&mut self) {
        self.wid.draw(move |b| {
            draw::draw_box(
                FrameType::FlatBox,
                b.x(),
                b.y(),
                b.width(),
                b.height(),
                Color::from_u32(0x304FFE),
            );
            draw::set_draw_color(Color::White);
            draw::set_font(Font::Courier, 24);
            draw::draw_text2(
                &b.label(),
                b.x(),
                b.y(),
                b.width(),
                b.height(),
                Align::Center,
            );
        });
    }

    // Overrides the handle function.
    // Notice the do_callback which allows the set_callback method to work
    fn handle(&mut self) {
        let mut wid = self.wid.clone();
        self.wid.handle(move |_, ev| match ev {
            Event::Push => {
                wid.do_callback();
                true
            }
            _ => false,
        });
    }
}

impl Deref for FlatButton {
    type Target = Widget;

    fn deref(&self) -> &Self::Target {
        &self.wid
    }
}

impl DerefMut for FlatButton {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.wid
    }
}

pub struct PowerButton {
    frm: Frame,
    on: Rc<RefCell<bool>>,
}

impl PowerButton {
    pub fn new(x: i32, y: i32, w: i32, h: i32) -> Self {
        let mut frm = Frame::new(x, y, w, h, "");
        frm.set_frame(FrameType::FlatBox);
        frm.set_color(Color::Black);
        let on = Rc::from(RefCell::from(false));
        frm.draw({
            // storing two almost identical images here, in a real application this could be optimized
            let on = Rc::clone(&on);
            let mut on_svg =
                SvgImage::from_data(&POWER.to_string().replace("red", "green")).unwrap();
            on_svg.scale(frm.width(), frm.height(), true, true);
            let mut off_svg = SvgImage::from_data(POWER).unwrap();
            off_svg.scale(frm.width(), frm.height(), true, true);
            move |f| {
                if *on.borrow() {
                    on_svg.draw(f.x(), f.y(), f.width(), f.height());
                } else {
                    off_svg.draw(f.x(), f.y(), f.width(), f.height());
                };
            }
        });
        frm.handle({
            let on = on.clone();
            move |f, ev| match ev {
                Event::Push => {
                    let prev = *on.borrow();
                    *on.borrow_mut() = !prev;
                    f.do_callback();
                    f.redraw();
                    true
                }
                _ => false,
            }
        });
        Self { frm, on }
    }
    pub fn is_on(&self) -> bool {
        *self.on.borrow()
    }
}

impl Deref for PowerButton {
    type Target = Frame;

    fn deref(&self) -> &Self::Target {
        &self.frm
    }
}

impl DerefMut for PowerButton {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.frm
    }
}

pub struct FancyHorSlider {
    s: Slider,
}

impl FancyHorSlider {
    pub fn new(x: i32, y: i32, width: i32, height: i32) -> Self {
        let mut s = Slider::new(x, y, width, height, "");
        s.set_type(SliderType::Horizontal);
        s.set_frame(FrameType::RFlatBox);
        s.set_color(Color::from_u32(0x868db1));
        s.draw(|s| {
            draw::set_draw_color(Color::Blue);
            draw::draw_pie(
                s.x() - 10 + (s.w() as f64 * s.value()) as i32,
                s.y() - 10,
                30,
                30,
                0.,
                360.,
            );
        });
        Self { s }
    }
}

impl Deref for FancyHorSlider {
    type Target = Slider;

    fn deref(&self) -> &Self::Target {
        &self.s
    }
}

impl DerefMut for FancyHorSlider {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.s
    }
}

fn main() {
    let app = app::App::default().with_scheme(app::Scheme::Gtk);
    // app::set_visible_focus(false);

    let mut wind = Window::default()
        .with_size(800, 600)
        .with_label("Custom Widgets");
    let mut but = FlatButton::new(350, 350, 160, 80, "Increment");
    let mut power = PowerButton::new(600, 100, 100, 100);
    let mut dial = FillDial::new(100, 100, 200, 200, "0");
    let mut frame = Frame::default()
        .with_size(160, 80)
        .with_label("0")
        .above_of(&*but, 20);
    let mut fancy_slider = FancyHorSlider::new(100, 550, 500, 10);
    let mut toggle = button::ToggleButton::new(650, 400, 80, 35, "@+9circle")
        .with_align(Align::Left | Align::Inside);
    wind.end();
    wind.show();

    wind.set_color(Color::Black);
    frame.set_label_size(32);
    frame.set_label_color(Color::from_u32(0xFFC300));
    dial.set_label_color(Color::White);
    dial.set_label_font(Font::CourierBold);
    dial.set_label_size(24);
    dial.set_color(Color::from_u32(0x6D4C41));
    dial.set_color(Color::White);
    dial.set_selection_color(Color::Red);
    toggle.set_frame(FrameType::RFlatBox);
    toggle.set_label_color(Color::White);
    toggle.set_selection_color(Color::from_u32(0x00008B));
    toggle.set_color(Color::from_u32(0x585858));
    toggle.clear_visible_focus();

    toggle.set_callback(|t| {
        if t.is_set() {
            t.set_align(Align::Right | Align::Inside);
        } else {
            t.set_align(Align::Left | Align::Inside);
        }
        t.parent().unwrap().redraw();
    });

    dial.draw(|d| {
        draw::set_draw_color(Color::Black);
        draw::draw_pie(d.x() + 20, d.y() + 20, 160, 160, 0., 360.);
        draw::draw_pie(d.x() - 5, d.y() - 5, 210, 210, -135., -45.);
    });

    dial.set_callback(|d| {
        d.set_label(&format!("{}", (d.value() * 100.) as i32));
        app::redraw();
    });
    but.set_callback(move |_| {
        frame.set_label(&(frame.label().parse::<i32>().unwrap() + 1).to_string())
    });

    power.set_callback(move |_| {
        println!("power button clicked");
    });

    fancy_slider.set_callback(|s| s.parent().unwrap().redraw());

    app.run().unwrap();
}
examples/gradients.rs (line 19)
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fn create_vertical_gradient_frame(
    x: i32,
    y: i32,
    w: i32,
    h: i32,
    col1: Color,
    col2: Color,
) -> frame::Frame {
    let mut frame = frame::Frame::new(x, y, w, h, "Vertical");
    frame.draw(move |f| {
        let imax = f.h();
        let d = if imax > 0 { imax } else { 1 };
        for i in 0..=imax {
            let w = 1.0 - i as f32 / d as f32;
            set_draw_color(Color::inactive(&Color::color_average(col1, col2, w)));
            draw_xyline(f.x(), f.y() + i, f.x() + f.w());
        }
        set_draw_color(Color::Black);
        set_font(Font::Helvetica, app::font_size());
        draw_text2(&f.label(), f.x(), f.y(), f.w(), f.h(), f.align());
    });
    frame
}

fn create_horizontal_gradient_frame(
    x: i32,
    y: i32,
    w: i32,
    h: i32,
    col1: Color,
    col2: Color,
) -> frame::Frame {
    let mut frame = frame::Frame::new(x, y, w, h, "Horizontal");
    frame.draw(move |f| {
        let imax = f.w();
        let d = if imax > 0 { imax } else { 1 };
        for i in 0..=imax {
            let w = 1.0 - i as f32 / d as f32;
            set_draw_color(Color::inactive(&Color::color_average(col1, col2, w)));
            draw_yxline(f.x() + i, f.y(), f.y() + f.h());
        }
        set_draw_color(Color::Black);
        set_font(Font::Helvetica, app::font_size());
        draw_text2(&f.label(), f.x(), f.y(), f.w(), f.h(), f.align());
    });
    frame
}

fn create_horizontal_svg_gradient_frame(
    x: i32,
    y: i32,
    w: i32,
    h: i32,
    col1: Color,
    col2: Color,
) -> frame::Frame {
    let mut frame = frame::Frame::new(x, y, w, h, "Svg");
    frame.draw(move |f| {
        let (r1, g1, b1) = Color::inactive(&col1).to_rgb();
        let (r2, g2, b2) = Color::inactive(&col2).to_rgb();
        let svg = format!(
            "<svg viewBox='0 0 {} {}'>
        <defs>
        <linearGradient id='grad1' x1='0%' y1='0%' x2='0%' y2='100%'>
        <stop offset='0%' style='stop-color:rgb({},{},{});stop-opacity:1' />
        <stop offset='100%' style='stop-color:rgb({},{},{});stop-opacity:1' />
        </linearGradient>
        </defs>
        <rect width='100%' height='100%' fill='url(#grad1)' />
        </svg>",
            f.w(),
            f.h() + 1,
            r1,
            g1,
            b1,
            r2,
            g2,
            b2
        );
        let mut image = image::SvgImage::from_data(&svg).unwrap();
        image.draw(f.x(), f.y(), f.w(), f.h());
        set_draw_color(Color::Black);
        set_font(Font::Helvetica, app::font_size());
        draw_text2(&f.label(), f.x(), f.y(), f.w(), f.h(), f.align());
    });
    frame
}

fn main() {
    let a = app::App::default();
    let mut win = window::Window::default().with_size(300, 300);
    create_vertical_gradient_frame(0, 0, 100, 100, Color::Red, Color::Cyan);
    create_horizontal_gradient_frame(100, 0, 100, 100, Color::Red, Color::Cyan);
    create_horizontal_svg_gradient_frame(200, 0, 100, 100, Color::Red, Color::Cyan);
    win.end();
    win.draw(|w| {
        // vertical gradient
        let imax = w.w();
        let d = if imax > 0 { imax } else { 1 };
        for i in 0..=imax {
            let v = 1.0 - i as f32 / d as f32;
            set_draw_color(Color::color_average(Color::Red, Color::Blue, v));
            draw_yxline(i, 0, w.h());
        }
        w.draw_children();
    });
    win.make_resizable(true);
    win.show();
    a.run().unwrap();
}
examples/custom_dial.rs (line 35)
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    pub fn new(x: i32, y: i32, w: i32, h: i32, label: &str) -> Self {
        let value = Rc::from(RefCell::from(0));
        let mut main_wid = group::Group::new(x, y, w, h, None)
            .with_label(label)
            .with_align(Align::Top);
        let mut value_frame =
            frame::Frame::new(main_wid.x(), main_wid.y() + 80, main_wid.w(), 40, "0");
        value_frame.set_label_size(26);
        main_wid.end();
        let value_c = value.clone();
        main_wid.draw(move |w| {
            draw::set_draw_rgb_color(230, 230, 230);
            draw::draw_pie(w.x(), w.y(), w.w(), w.h(), 0., 180.);
            draw::set_draw_hex_color(0xb0bf1a);
            draw::draw_pie(
                w.x(),
                w.y(),
                w.w(),
                w.h(),
                (100 - *value_c.borrow()) as f64 * 1.8,
                180.,
            );
            draw::set_draw_color(Color::White);
            draw::draw_pie(
                w.x() - 50 + w.w() / 2,
                w.y() - 50 + w.h() / 2,
                100,
                100,
                0.,
                360.,
            );
            w.draw_children();
        });
        Self {
            main_wid,
            value,
            value_frame,
        }
    }
Additional examples can be found in: