bjorn3
76 lines
1.5 KiB
Rust
76 lines
1.5 KiB
Rust
use std::cmp;
|
|
|
|
// Keep synced with orbital's SyncRect
|
|
// Technically orbital uses i32 rather than u32, but values larger than i32::MAX
|
|
// would be a bug anyway.
|
|
#[derive(Debug, Copy, Clone)]
|
|
#[repr(C, packed)]
|
|
pub struct Damage {
|
|
pub x: u32,
|
|
pub y: u32,
|
|
pub width: u32,
|
|
pub height: u32,
|
|
}
|
|
|
|
impl Damage {
|
|
#[must_use]
|
|
pub fn clip(mut self, width: u32, height: u32) -> Self {
|
|
// Clip damage
|
|
let x2 = self.x + self.width;
|
|
self.x = cmp::min(self.x, width);
|
|
if x2 > width {
|
|
self.width = width - self.x;
|
|
}
|
|
|
|
let y2 = self.y + self.height;
|
|
self.y = cmp::min(self.y, height);
|
|
if y2 > height {
|
|
self.height = height - self.y;
|
|
}
|
|
self
|
|
}
|
|
}
|
|
|
|
pub struct DisplayMap {
|
|
offscreen: *mut [u32],
|
|
width: usize,
|
|
height: usize,
|
|
}
|
|
|
|
impl DisplayMap {
|
|
pub(crate) unsafe fn new(offscreen: *mut [u32], width: usize, height: usize) -> Self {
|
|
DisplayMap {
|
|
offscreen,
|
|
width,
|
|
height,
|
|
}
|
|
}
|
|
|
|
pub fn ptr(&self) -> *const [u32] {
|
|
self.offscreen
|
|
}
|
|
|
|
pub fn ptr_mut(&mut self) -> *mut [u32] {
|
|
self.offscreen
|
|
}
|
|
|
|
pub fn width(&self) -> usize {
|
|
self.width
|
|
}
|
|
|
|
pub fn height(&self) -> usize {
|
|
self.height
|
|
}
|
|
}
|
|
|
|
unsafe impl Send for DisplayMap {}
|
|
unsafe impl Sync for DisplayMap {}
|
|
|
|
impl Drop for DisplayMap {
|
|
fn drop(&mut self) {
|
|
unsafe {
|
|
let _ = libredox::call::munmap(self.offscreen as *mut (), self.offscreen.len());
|
|
}
|
|
}
|
|
}
|