tekenen 0.0.5

Simple library for drawing pixels in memory.
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

use super::Tekenen;

pub mod widgets;

#[derive(Debug, Default)]
pub enum Unit {
    #[default]
    Auto,
    Pixel(i32),
    Percent(f32),
}

#[derive(Debug, Default)]
pub struct Sides {
    up: Unit,
    right: Unit,
    down: Unit,
    left: Unit,
}

#[derive(Debug, Default)]
pub struct BoundingBox {
    margin: Sides,
    border: Sides,
    width: Unit,
    height: Unit
}

pub struct ViewBox {
    pub x: i32,
    pub y: i32,
    pub w: i32,
    pub h: i32,
}

impl ViewBox {
    pub fn new(tekenen: &Tekenen) -> Self {
        Self {
            x: 0,
            y: 0,
            w: tekenen.width() as i32,
            h: tekenen.height() as i32
        }
    }
}

pub enum Direction {
    Horizonral,
    Vertical
}
pub enum Container<'c> {
    Single {
        bounding_box: BoundingBox,
        draw: Box<dyn FnMut(&ViewBox, &mut Tekenen) + 'c>,
    },
    Directional {
        bounding_box: BoundingBox,
        direction: Direction,
        children: Vec<Container<'c>>
    },
}

impl<'c> Container<'c> {
    pub fn new(draw: impl FnMut(&ViewBox, &mut Tekenen) + 'c) -> Container<'c> {
        Container::Single {
            bounding_box: BoundingBox::default(),
            draw: Box::new(draw),
        }
    }

    pub fn vertical(children: Vec<Container>) -> Container {
        Container::Directional {
            bounding_box: BoundingBox::default(),
            direction: Direction::Vertical, 
            children
        }
    }

    pub fn horiziontal(children: Vec<Container>) -> Container {
        Container::Directional {
            bounding_box: BoundingBox::default(),
            direction: Direction::Horizonral, 
            children
        }
    }
}

impl Tekenen {
    fn ui_impl(&mut self, view: ViewBox, container: &mut Container) {
        match container {
            Container::Single { bounding_box, ref mut draw } => {
                draw(&view, self);
            },
            Container::Directional { bounding_box, direction: Direction::Horizonral, children } => {
                let size = children.len() as i32;
                let new_width = view.w / size;

                for i in 0..size {
                    let child = &mut children[i as usize];

                    let child_view = ViewBox {
                        x: view.x + new_width * i,
                        y: view.y,
                        w: new_width,
                        h: view.h
                    };

                    self.ui_impl(child_view, child)
                }
            },
            Container::Directional { bounding_box, direction: Direction::Vertical, children } => {
                let size = children.len() as i32;
                let new_height = view.h / size;

                for i in 0..size {
                    let child = &mut children[i as usize];

                    let child_view = ViewBox {
                        x: view.x,
                        y: view.y + new_height * i,
                        w: view.w,
                        h: new_height
                    };

                    self.ui_impl(child_view, child)
                }
            }
        }
    }

    pub fn ui_boxed(&mut self, view: ViewBox, mut container: Container) {
        self.ui_impl(view, &mut container)
    }


    pub fn ui(&mut self, container: Container) {
        let view = ViewBox::new(self);

        self.ui_boxed(view, container)
    }
}