1 //! Various types and functions that are used by both the client and the server
2 //! libraries.
3
4 use std::os::unix::io::RawFd;
5 use std::{
6 fmt,
7 os::raw::{c_char, c_int, c_void},
8 };
9
10 #[repr(C)]
11 pub struct wl_message {
12 pub name: *const c_char,
13 pub signature: *const c_char,
14 pub types: *const *const wl_interface,
15 }
16
17 #[repr(C)]
18 pub struct wl_interface {
19 pub name: *const c_char,
20 pub version: c_int,
21 pub request_count: c_int,
22 pub requests: *const wl_message,
23 pub event_count: c_int,
24 pub events: *const wl_message,
25 }
26
27 impl fmt::Debug for wl_interface {
fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result28 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
29 write!(f, "wl_interface@{:p}", self)
30 }
31 }
32
33 unsafe impl Send for wl_interface {}
34 unsafe impl Sync for wl_interface {}
35
36 #[repr(C)]
37 pub struct wl_list {
38 pub prev: *mut wl_list,
39 pub next: *mut wl_list,
40 }
41
42 #[repr(C)]
43 pub struct wl_array {
44 pub size: usize,
45 pub alloc: usize,
46 pub data: *mut c_void,
47 }
48
49 pub type wl_fixed_t = i32;
50
wl_fixed_to_double(f: wl_fixed_t) -> f6451 pub fn wl_fixed_to_double(f: wl_fixed_t) -> f64 {
52 f64::from(f) / 256.
53 }
54
wl_fixed_from_double(d: f64) -> wl_fixed_t55 pub fn wl_fixed_from_double(d: f64) -> wl_fixed_t {
56 (d * 256.) as i32
57 }
58
wl_fixed_to_int(f: wl_fixed_t) -> i3259 pub fn wl_fixed_to_int(f: wl_fixed_t) -> i32 {
60 f / 256
61 }
62
wl_fixed_from_int(i: i32) -> wl_fixed_t63 pub fn wl_fixed_from_int(i: i32) -> wl_fixed_t {
64 i * 256
65 }
66
67 // must be the appropriate size
68 // can contain i32, u32 and pointers
69 #[repr(C)]
70 pub union wl_argument {
71 pub i: i32,
72 pub u: u32,
73 pub f: wl_fixed_t,
74 pub s: *const c_char,
75 pub o: *const c_void,
76 pub n: u32,
77 pub a: *const wl_array,
78 pub h: RawFd,
79 }
80
81 pub type wl_dispatcher_func_t = unsafe extern "C" fn(
82 *const c_void,
83 *mut c_void,
84 u32,
85 *const wl_message,
86 *const wl_argument,
87 ) -> c_int;
88
89 pub type wl_log_func_t = unsafe extern "C" fn(*const c_char, *const c_void);
90