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dynamically reallocate buffer; release mutex before callback

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Determinant 2017-07-01 12:24:35 -04:00
parent 5e5debc48f
commit 75856e0e39
1 changed files with 27 additions and 11 deletions
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30
src/platform/linux/x11/mod.rs
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@ -290,14 +290,26 @@ impl EventsLoop {
let written = unsafe {
use std::str;
const BUFF_SIZE: usize = 512;
const INIT_BUFF_SIZE: usize = 16;
let mut windows = self.windows.lock().unwrap();
let window_data = windows.get_mut(&WindowId(xwindow)).unwrap();
let mut buffer: [u8; BUFF_SIZE] = [mem::uninitialized(); BUFF_SIZE];
let mut keysym = 0;
let count = (self.display.xlib.Xutf8LookupString)(window_data.ic, xkev,
/* buffer allocated on heap instead of stack, due to the possible
* reallocation */
let mut buffer: Vec<u8> = vec![mem::uninitialized(); INIT_BUFF_SIZE];
let mut keysym: ffi::KeySym = 0;
let mut status: ffi::Status = 0;
let mut count = (self.display.xlib.Xutf8LookupString)(window_data.ic, xkev,
mem::transmute(buffer.as_mut_ptr()),
buffer.len() as libc::c_int, &mut keysym, ptr::null_mut());
buffer.len() as libc::c_int,
&mut keysym, &mut status);
/* buffer overflowed, dynamically reallocate */
if status == ffi::XBufferOverflow {
buffer = vec![mem::uninitialized(); count as usize];
count = (self.display.xlib.Xutf8LookupString)(window_data.ic, xkev,
mem::transmute(buffer.as_mut_ptr()),
buffer.len() as libc::c_int,
&mut keysym, &mut status);
}
{
// Translate x event state to mods
@ -443,16 +455,20 @@ impl EventsLoop {
}
ffi::XI_FocusIn => {
let xev: &ffi::XIFocusInEvent = unsafe { &*(xev.data as *const _) };
unsafe {
let mut windows = self.windows.lock().unwrap();
let window_data = windows.get_mut(&WindowId(xev.event)).unwrap();
unsafe { (self.display.xlib.XSetICFocus)(window_data.ic) };
(self.display.xlib.XSetICFocus)(window_data.ic);
}
callback(Event::WindowEvent { window_id: mkwid(xev.event), event: Focused(true) })
}
ffi::XI_FocusOut => {
let xev: &ffi::XIFocusOutEvent = unsafe { &*(xev.data as *const _) };
unsafe {
let mut windows = self.windows.lock().unwrap();
let window_data = windows.get_mut(&WindowId(xev.event)).unwrap();
unsafe { (self.display.xlib.XUnsetICFocus)(window_data.ic) };
(self.display.xlib.XUnsetICFocus)(window_data.ic);
}
callback(Event::WindowEvent { window_id: mkwid(xev.event), event: Focused(false) })
}