display_driver/
area.rs

1/// A simple struct representing a rectangular area.
2#[derive(Debug, Clone, Copy)]
3pub struct Area {
4    /// Start X coordinate.
5    pub x: u16,
6    /// Start Y coordinate.
7    pub y: u16,
8    /// Width of the area being written.
9    pub w: u16,
10    /// Height of the area being written.
11    pub h: u16,
12}
13
14impl Area {
15    pub const fn new(x: u16, y: u16, w: u16, h: u16) -> Self {
16        Self { x, y, w, h }
17    }
18
19    pub const fn from_origin(w: u16, h: u16) -> Self {
20        Self { x: 0, y: 0, w, h }
21    }
22
23    pub const fn from_origin_size(size: (u16, u16)) -> Self {
24        Self {
25            x: 0,
26            y: 0,
27            w: size.0,
28            h: size.1,
29        }
30    }
31
32    pub const fn position(&self) -> (u16, u16) {
33        (self.x, self.y)
34    }
35
36    pub const fn total_pixels(&self) -> usize {
37        self.w as usize * self.h as usize
38    }
39
40    pub const fn bottom_right(&self) -> (u16, u16) {
41        (self.x + self.w - 1, self.y + self.h - 1)
42    }
43}
44
45// #[derive(Clone, Copy, Debug)]
46// pub enum AreaOrSize {
47//     Area(Area),
48//     // WidthAndHeight(u16, u16),
49//     Size(usize)
50// }
51
52// impl AreaOrSize {
53//     pub fn size(&self) -> usize {
54//         match *self {
55//             AreaOrSize::Area(area) => area.size(),
56//             // AreaOrSize::WidthAndHeight(w, h) => w as usize * h as usize,
57//             AreaOrSize::Size(size) => size,
58//         }
59//     }
60// }
61
62#[cfg(feature = "embedded-graphics")]
63mod eg_impls {
64    use super::*;
65    use embedded_graphics_core::prelude::*;
66    use embedded_graphics_core::primitives::Rectangle;
67
68    impl From<Rectangle> for Area {
69        fn from(value: Rectangle) -> Self {
70            Area {
71                x: value.top_left.x as _,
72                y: value.top_left.y as _,
73                w: value.size.width as _,
74                h: value.size.height as _,
75            }
76        }
77    }
78
79    impl From<Area> for Rectangle {
80        fn from(value: Area) -> Self {
81            Rectangle {
82                top_left: Point::new(value.x as _, value.y as _),
83                size: Size::new(value.w as _, value.h as _),
84            }
85        }
86    }
87}
display_driver/area.rs

display_driver/
area.rs
