classicube_sys\drawer_2d/
owned_context_2d.rs

1use core::{borrow::Borrow, ptr};
2
3use crate::{
4    Math_NextPowOf2,
5    bindings::{Bitmap, BitmapCol, Context2D},
6    std_types::{Vec, c_int, vec},
7};
8
9pub struct OwnedContext2D {
10    context_2d: Context2D,
11
12    #[allow(dead_code)]
13    pixels: Vec<BitmapCol>,
14}
15
16impl OwnedContext2D {
17    /// # Panics
18    ///
19    /// Panics if `width` or `height` is negative.
20    #[must_use]
21    pub fn new(width: c_int, height: c_int, color: BitmapCol) -> Self {
22        let w = usize::try_from(width).expect("context width must be non-negative");
23        let h = usize::try_from(height).expect("context height must be non-negative");
24        let mut pixels = vec![color; w * h];
25        let scan0 = pixels.as_mut_ptr();
26
27        Self {
28            context_2d: Context2D {
29                bmp: Bitmap {
30                    scan0,
31                    width,
32                    height,
33                },
34                width,
35                height,
36                meta: ptr::null_mut(),
37            },
38            pixels,
39        }
40    }
41
42    #[must_use]
43    pub fn new_cleared(width: c_int, height: c_int) -> Self {
44        Self::new(width, height, 0x0000_0000)
45    }
46
47    #[must_use]
48    pub fn new_pow_of_2(width: c_int, height: c_int, color: BitmapCol) -> OwnedContext2D {
49        let width = Math_NextPowOf2(width);
50        let height = Math_NextPowOf2(height);
51
52        Self::new(width, height, color)
53    }
54
55    #[must_use]
56    pub fn new_pow_of_2_cleared(width: c_int, height: c_int) -> OwnedContext2D {
57        Self::new_pow_of_2(width, height, 0x0000_0000)
58    }
59
60    #[must_use]
61    pub fn as_context_2d(&self) -> &Context2D {
62        &self.context_2d
63    }
64
65    pub fn as_context_2d_mut(&mut self) -> &mut Context2D {
66        &mut self.context_2d
67    }
68
69    #[must_use]
70    pub fn as_bitmap(&self) -> &Bitmap {
71        &self.context_2d.bmp
72    }
73
74    pub fn as_bitmap_mut(&mut self) -> &mut Bitmap {
75        &mut self.context_2d.bmp
76    }
77}
78
79impl Borrow<Bitmap> for OwnedContext2D {
80    fn borrow(&self) -> &Bitmap {
81        self.as_bitmap()
82    }
83}
classicube_sys\drawer_2d/owned_context_2d.rs

classicube_sys\drawer_2d/
owned_context_2d.rs
