95 lines
2 KiB
Rust
95 lines
2 KiB
Rust
use std::ptr;
|
|
use uapi::c;
|
|
|
|
#[link(name = "pixman-1")]
|
|
extern "C" {
|
|
fn pixman_region32_init(region: *mut Region);
|
|
fn pixman_region32_init_rect(
|
|
region: *mut Region,
|
|
x: c::c_int,
|
|
y: c::c_int,
|
|
width: c::c_uint,
|
|
height: c::c_uint,
|
|
);
|
|
fn pixman_region32_fini(region: *mut Region);
|
|
fn pixman_region32_copy(dst: *mut Region, src: *const Region);
|
|
fn pixman_region32_union(dst: *mut Region, a: *const Region, b: *const Region);
|
|
fn pixman_region32_subtract(dst: *mut Region, a: *const Region, b: *const Region);
|
|
}
|
|
|
|
#[repr(C)]
|
|
#[derive(Copy, Clone, Default, Debug)]
|
|
pub struct Box32 {
|
|
x1: i32,
|
|
y1: i32,
|
|
x2: i32,
|
|
y2: i32,
|
|
}
|
|
|
|
#[repr(C)]
|
|
struct RegionData {
|
|
size: c::c_long,
|
|
num_rects: c::c_long,
|
|
// rects: [Box32; size],
|
|
}
|
|
|
|
#[repr(C)]
|
|
pub struct Region {
|
|
extents: Box32,
|
|
data: *mut RegionData,
|
|
}
|
|
|
|
impl Region {
|
|
pub fn new() -> Self {
|
|
let mut slf = Region {
|
|
extents: Default::default(),
|
|
data: ptr::null_mut(),
|
|
};
|
|
unsafe {
|
|
pixman_region32_init(&mut slf);
|
|
}
|
|
slf
|
|
}
|
|
|
|
pub fn rect(x: i32, y: i32, width: u32, height: u32) -> Self {
|
|
let mut new = Region::new();
|
|
unsafe {
|
|
pixman_region32_init_rect(&mut new, x as _, y as _, width as _, height as _);
|
|
}
|
|
new
|
|
}
|
|
|
|
pub fn add(&self, region: &Self) -> Self {
|
|
let mut new = Region::new();
|
|
unsafe {
|
|
pixman_region32_union(&mut new, self, region);
|
|
}
|
|
new
|
|
}
|
|
|
|
pub fn subtract(&self, region: &Self) -> Self {
|
|
let mut new = Region::new();
|
|
unsafe {
|
|
pixman_region32_subtract(&mut new, self, region);
|
|
}
|
|
new
|
|
}
|
|
}
|
|
|
|
impl Clone for Region {
|
|
fn clone(&self) -> Self {
|
|
let mut new = Region::new();
|
|
unsafe {
|
|
pixman_region32_copy(&mut new, self);
|
|
}
|
|
new
|
|
}
|
|
}
|
|
|
|
impl Drop for Region {
|
|
fn drop(&mut self) {
|
|
unsafe {
|
|
pixman_region32_fini(self);
|
|
}
|
|
}
|
|
}
|