Function fltk::draw::draw_line

source · 
pub fn draw_line(x1: i32, y1: i32, x2: i32, y2: i32)
Expand description

Draws a line

Examples found in repository?
examples/paint.rs (line 68)
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    pub fn new(w: i32, h: i32) -> Self {
        let mut frame = Frame::default().with_size(w, h).center_of_parent();
        frame.set_color(Color::White);
        frame.set_frame(FrameType::DownBox);

        let surf = ImageSurface::new(frame.width(), frame.height(), false);
        ImageSurface::push_current(&surf);
        draw_rect_fill(0, 0, w, h, Color::White);
        ImageSurface::pop_current();

        let surf = Rc::from(RefCell::from(surf));

        frame.draw({
            let surf = surf.clone();
            move |f| {
                let surf = surf.borrow();
                let mut img = surf.image().unwrap();
                img.draw(f.x(), f.y(), f.w(), f.h());
            }
        });

        frame.handle({
            let mut x = 0;
            let mut y = 0;
            let surf = surf.clone();
            move |f, ev| {
                // println!("{}", ev);
                // println!("coords {:?}", app::event_coords());
                // println!("get mouse {:?}", app::get_mouse());
                let surf = surf.borrow_mut();
                match ev {
                    Event::Push => {
                        ImageSurface::push_current(&surf);
                        set_draw_color(Color::Red);
                        set_line_style(LineStyle::Solid, 3);
                        let coords = app::event_coords();
                        x = coords.0;
                        y = coords.1;
                        draw_point(x, y);
                        ImageSurface::pop_current();
                        f.redraw();
                        true
                    }
                    Event::Drag => {
                        ImageSurface::push_current(&surf);
                        set_draw_color(Color::Red);
                        set_line_style(LineStyle::Solid, 3);
                        let coords = app::event_coords();
                        draw_line(x, y, coords.0, coords.1);
                        x = coords.0;
                        y = coords.1;
                        ImageSurface::pop_current();
                        f.redraw();
                        true
                    }
                    _ => false,
                }
            }
        });
        Self { frame, surf }
    }