buoyant 0.6.1

SwiftUI-like UIs in Rust for embedded devices
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

# Separating Views

`Spacer` is used as a sort of shim to create flexible spacing between views in a stack.

Here, `Spacer` is used to push the two `Circle`s to either side.

![Spacer](./images/spacer.png)

```rust,no_run
# extern crate buoyant;
# extern crate embedded_graphics;
# extern crate embedded_graphics_simulator;
# use embedded_graphics::{pixelcolor::Rgb888, prelude::*};
# use embedded_graphics_simulator::{OutputSettings, SimulatorDisplay, Window};
# 
# const BACKGROUND_COLOR: Rgb888 = Rgb888::CSS_DARK_SLATE_GRAY;
# const DEFAULT_COLOR: Rgb888 = Rgb888::WHITE;
# 
# fn main() {
#     let mut window = Window::new("Example", &OutputSettings::default());
#     let mut display: SimulatorDisplay<Rgb888> = SimulatorDisplay::new(Size::new(480, 320));
# 
#     display.clear(BACKGROUND_COLOR).unwrap();
# 
#     view()
#         .as_drawable(display.size(), DEFAULT_COLOR, &mut ())
#         .draw(&mut display)
#         .unwrap();
# 
#     window.show_static(&display);
# }
# 
use buoyant::view::prelude::*;

fn view() -> impl View<Rgb888, ()> {
    VStack::new((
        HStack::new((
            Circle.foreground_color(Rgb888::CSS_CORAL),
            Spacer::default(),
            Circle.foreground_color(Rgb888::CSS_CORAL),
        )),
        Rectangle
            .corner_radius(25)
            .foreground_color(Rgb888::CSS_DARK_ORCHID),
        Capsule.foreground_color(Rgb888::CSS_GOLDENROD),
    ))
    .with_alignment(HorizontalAlignment::Trailing) // no effect!
    .with_spacing(10)
}
```

Note that with this update, changes to the `VStack` alignment no longer have any effect!
The `Spacer` forces the `HStack` to always take the full width offered by the `VStack`,
meaning the `VStack` child views will always have the same width. There is therefore no
ambiguity in the alignment of the `VStack` children.