mirui 0.10.2

A lightweight, no_std ECS-driven UI framework for embedded, desktop, and WebAssembly
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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163

pub mod dimension;
pub mod fixed;
pub mod transform;
pub mod transform_3d;
pub mod viewport;

pub use dimension::Dimension;
pub use fixed::{Fixed, Fixed64};
pub use transform::{Transform, TransformClass};
pub use transform_3d::Transform3D;
pub use viewport::Viewport;

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub struct Point {
    pub x: Fixed,
    pub y: Fixed,
}

impl Point {
    pub const ZERO: Self = Self {
        x: Fixed::ZERO,
        y: Fixed::ZERO,
    };

    pub fn floor(&self) -> (i32, i32) {
        (self.x.to_int(), self.y.to_int())
    }

    pub fn ceil(&self) -> (i32, i32) {
        (self.x.ceil().to_int(), self.y.ceil().to_int())
    }

    pub fn round(&self) -> (i32, i32) {
        (self.x.round().to_int(), self.y.round().to_int())
    }
}

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub struct Rect {
    pub x: Fixed,
    pub y: Fixed,
    pub w: Fixed,
    pub h: Fixed,
}

impl Rect {
    pub const ZERO: Self = Self {
        x: Fixed::ZERO,
        y: Fixed::ZERO,
        w: Fixed::ZERO,
        h: Fixed::ZERO,
    };

    pub fn intersect(&self, other: &Rect) -> Option<Rect> {
        let x1 = self.x.max(other.x);
        let y1 = self.y.max(other.y);
        let x2 = (self.x + self.w).min(other.x + other.w);
        let y2 = (self.y + self.h).min(other.y + other.h);
        if x1 < x2 && y1 < y2 {
            Some(Rect {
                x: x1,
                y: y1,
                w: x2 - x1,
                h: y2 - y1,
            })
        } else {
            None
        }
    }

    pub fn is_aligned(&self) -> bool {
        self.x.is_integer() && self.y.is_integer() && self.w.is_integer() && self.h.is_integer()
    }

    /// Pixel bounds: (x0, y0, x1, y1) — floor for top-left, ceil for bottom-right
    pub fn pixel_bounds(&self) -> (i32, i32, i32, i32) {
        (
            self.x.to_int(),
            self.y.to_int(),
            (self.x + self.w).ceil().to_int(),
            (self.y + self.h).ceil().to_int(),
        )
    }

    /// Convert to integer pixel rect that fully contains this rect
    pub fn to_px(&self) -> (i32, i32, u16, u16) {
        let (x0, y0, x1, y1) = self.pixel_bounds();
        (x0, y0, (x1 - x0) as u16, (y1 - y0) as u16)
    }

    /// Construct from integer values
    pub fn new(
        x: impl Into<Fixed>,
        y: impl Into<Fixed>,
        w: impl Into<Fixed>,
        h: impl Into<Fixed>,
    ) -> Self {
        Self {
            x: x.into(),
            y: y.into(),
            w: w.into(),
            h: h.into(),
        }
    }
}

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub struct Color {
    pub r: u8,
    pub g: u8,
    pub b: u8,
    pub a: u8,
}

impl Color {
    pub const fn rgba(r: u8, g: u8, b: u8, a: u8) -> Self {
        Self { r, g, b, a }
    }

    pub const fn rgb(r: u8, g: u8, b: u8) -> Self {
        Self { r, g, b, a: 255 }
    }
}

pub type Opa = u8;

#[derive(Clone, Copy, Debug)]
pub struct NormColor {
    pub r: Fixed,
    pub g: Fixed,
    pub b: Fixed,
    pub a: Fixed,
}

const F255: Fixed = Fixed::from_int(255);

impl From<Color> for NormColor {
    fn from(c: Color) -> Self {
        Self {
            r: Fixed::from_int(c.r as i32) / F255,
            g: Fixed::from_int(c.g as i32) / F255,
            b: Fixed::from_int(c.b as i32) / F255,
            a: Fixed::from_int(c.a as i32) / F255,
        }
    }
}

impl From<NormColor> for Color {
    fn from(nc: NormColor) -> Self {
        Self {
            r: nc.r.map01(F255).to_int() as u8,
            g: nc.g.map01(F255).to_int() as u8,
            b: nc.b.map01(F255).to_int() as u8,
            a: nc.a.map01(F255).to_int() as u8,
        }
    }
}

impl Color {
    pub fn normalized(&self) -> NormColor {
        NormColor::from(*self)
    }
}