conrod 0.57.0

An easy-to-use, 100% Rust, extensible 2D GUI library.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114

//! A simple example demonstrating the `Triangles` widget.

#[cfg(all(feature="winit", feature="glium"))] #[macro_use] extern crate conrod;

fn main() {
    feature::main();
}

#[cfg(all(feature="winit", feature="glium"))]
mod feature {
    use conrod::{self, color, widget, Widget};
    use conrod::widget::triangles::Triangle;
    use conrod::backend::glium::glium::{self, Surface};

    pub fn main() {
        const WIDTH: u32 = 700;
        const HEIGHT: u32 = 400;

        // Build the window.
        let mut events_loop = glium::glutin::EventsLoop::new();
        let window = glium::glutin::WindowBuilder::new()
            .with_title("Triangles!")
            .with_dimensions(WIDTH, HEIGHT);
        let context = glium::glutin::ContextBuilder::new()
            .with_vsync(true)
            .with_multisampling(4);
        let display = glium::Display::new(window, context, &events_loop).unwrap();

        // construct our `Ui`.
        let mut ui = conrod::UiBuilder::new([WIDTH as f64, HEIGHT as f64]).build();

        // Generate the widget identifiers.
        widget_ids!(struct Ids { triangles });
        let ids = Ids::new(ui.widget_id_generator());

        // Add a `Font` to the `Ui`'s `font::Map` from file.
        const FONT_PATH: &'static str =
            concat!(env!("CARGO_MANIFEST_DIR"), "/assets/fonts/NotoSans/NotoSans-Regular.ttf");
        ui.fonts.insert_from_file(FONT_PATH).unwrap();

        // A type used for converting `conrod::render::Primitives` into `Command`s that can be used
        // for drawing to the glium `Surface`.
        let mut renderer = conrod::backend::glium::Renderer::new(&display).unwrap();

        // The image map describing each of our widget->image mappings (in our case, none).
        let image_map = conrod::image::Map::<glium::texture::Texture2d>::new();

        events_loop.run_forever(|event| {

            match event.clone() {
                glium::glutin::Event::WindowEvent { event, .. } => match event {

                    // Break from the loop upon `Escape` or closed window.
                    glium::glutin::WindowEvent::Closed |
                    glium::glutin::WindowEvent::KeyboardInput {
                        input: glium::glutin::KeyboardInput {
                            virtual_keycode: Some(glium::glutin::VirtualKeyCode::Escape),
                            ..
                        },
                        ..
                    } => return glium::glutin::ControlFlow::Break,

                    _ => (),
                },
                _ => (),
            }

            // Use the `winit` backend feature to convert the winit event to a conrod one.
            let input = match conrod::backend::winit::convert_event(event, &display) {
                None => return glium::glutin::ControlFlow::Continue,
                Some(input) => input,
            };

            // Handle the input with the `Ui`.
            ui.handle_event(input);

            // Set the triangle widget.
            {
                let ui = &mut ui.set_widgets();
                let rect = ui.rect_of(ui.window).unwrap();
                let (l, r, b, t) = rect.l_r_b_t();
                let (c1, c2, c3) = (color::RED.to_rgb(), color::GREEN.to_rgb(), color::BLUE.to_rgb());

                let triangles = [
                    Triangle([([l, b], c1), ([l, t], c2), ([r, t], c3)]),
                    Triangle([([r, t], c1), ([r, b], c2), ([l, b], c3)]),
                ];

                widget::Triangles::multi_color(triangles.iter().cloned())
                    .with_bounding_rect(rect)
                    .set(ids.triangles, ui);
            }

            // Draw the `Ui` if it has changed.
            if let Some(primitives) = ui.draw_if_changed() {
                renderer.fill(&display, primitives, &image_map);
                let mut target = display.draw();
                target.clear_color(0.0, 0.0, 0.0, 1.0);
                renderer.draw(&display, &mut target, &image_map).unwrap();
                target.finish().unwrap();
            }

            glium::glutin::ControlFlow::Continue
        });
    }
}

#[cfg(not(all(feature="winit", feature="glium")))]
mod feature {
    pub fn main() {
        println!("This example requires the `winit` and `glium` features. \
                 Try running `cargo run --release --features=\"winit glium\" --example <example_name>`");
    }
}