wayland_sys/
common.rs

1//! Various types and functions that are used by both the client and the server
2//! libraries.
3
4use std::os::unix::io::RawFd;
5use std::{
6    fmt,
7    os::raw::{c_char, c_int, c_void},
8};
9
10#[repr(C)]
11pub 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)]
18pub 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
27impl fmt::Debug for wl_interface {
28    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
29        write!(f, "wl_interface@{:p}", self)
30    }
31}
32
33unsafe impl Send for wl_interface {}
34unsafe impl Sync for wl_interface {}
35
36#[repr(C)]
37pub struct wl_list {
38    pub prev: *mut wl_list,
39    pub next: *mut wl_list,
40}
41
42#[repr(C)]
43pub struct wl_array {
44    pub size: usize,
45    pub alloc: usize,
46    pub data: *mut c_void,
47}
48
49pub type wl_fixed_t = i32;
50
51pub fn wl_fixed_to_double(f: wl_fixed_t) -> f64 {
52    f64::from(f) / 256.
53}
54
55pub fn wl_fixed_from_double(d: f64) -> wl_fixed_t {
56    (d * 256.) as i32
57}
58
59pub fn wl_fixed_to_int(f: wl_fixed_t) -> i32 {
60    f / 256
61}
62
63pub 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)]
70pub 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
81pub 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
89pub type wl_log_func_t = unsafe extern "C" fn(*const c_char, *const c_void);
wayland_sys/common.rs

wayland_sys/
common.rs
