diff options
Diffstat (limited to 'src/x11')
| -rw-r--r-- | src/x11/headless.rs | 10 | ||||
| -rw-r--r-- | src/x11/window/mod.rs | 50 |
2 files changed, 34 insertions, 26 deletions
diff --git a/src/x11/headless.rs b/src/x11/headless.rs index b4a6ba0..d13d1d0 100644 --- a/src/x11/headless.rs +++ b/src/x11/headless.rs @@ -5,6 +5,12 @@ use libc; use std::{mem, ptr}; use super::ffi; +fn with_c_str<F, T>(s: &str, f: F) -> T where F: FnOnce(*const i8) -> T { + use std::ffi::CString; + let c_str = CString::from_slice(s.as_bytes()); + f(c_str.as_slice_with_nul().as_ptr()) +} + pub struct HeadlessContext { context: ffi::OSMesaContext, buffer: Vec<u32>, @@ -41,10 +47,8 @@ impl HeadlessContext { } pub fn get_proc_address(&self, addr: &str) -> *const () { - use std::c_str::ToCStr; - unsafe { - addr.with_c_str(|s| { + with_c_str(addr, |s| { ffi::OSMesaGetProcAddress(mem::transmute(s)) as *const () }) } diff --git a/src/x11/window/mod.rs b/src/x11/window/mod.rs index 9d79ad4..cff2c61 100644 --- a/src/x11/window/mod.rs +++ b/src/x11/window/mod.rs @@ -17,13 +17,19 @@ mod monitor; static THREAD_INIT: Once = ONCE_INIT; fn ensure_thread_init() { - THREAD_INIT.doit(|| { + THREAD_INIT.call_once(|| { unsafe { ffi::XInitThreads(); } }); } +fn with_c_str<F, T>(s: &str, f: F) -> T where F: FnOnce(*const i8) -> T { + use std::ffi::CString; + let c_str = CString::from_slice(s.as_bytes()); + f(c_str.as_slice_with_nul().as_ptr()) +} + struct XWindow { display: *mut ffi::Display, window: ffi::Window, @@ -234,13 +240,13 @@ impl Window { // creating window, step 2 let wm_delete_window = unsafe { - use std::c_str::ToCStr; - - let delete_window = "WM_DELETE_WINDOW".to_c_str(); - let mut wm_delete_window = ffi::XInternAtom(display, delete_window.as_ptr(), 0); + let mut wm_delete_window = with_c_str("WM_DELETE_WINDOW", |delete_window| + ffi::XInternAtom(display, delete_window, 0) + ); ffi::XSetWMProtocols(display, window, &mut wm_delete_window, 1); - let c_title = builder.title.to_c_str(); - ffi::XStoreName(display, window, c_title.as_ptr()); + with_c_str(&*builder.title, |title| {; + ffi::XStoreName(display, window, title); + }); ffi::XFlush(display); wm_delete_window @@ -257,13 +263,15 @@ impl Window { // creating input context let ic = unsafe { - use std::c_str::ToCStr; - - let input_style = "inputStyle".to_c_str(); - let client_window = "clientWindow".to_c_str(); - let ic = ffi::XCreateIC(im, input_style.as_ptr(), - ffi::XIMPreeditNothing | ffi::XIMStatusNothing, client_window.as_ptr(), - window, ptr::null()); + let ic = with_c_str("inputStyle", |input_style| + with_c_str("clientWindow", |client_window| + ffi::XCreateIC( + im, input_style, + ffi::XIMPreeditNothing | ffi::XIMStatusNothing, client_window, + window, ptr::null() + ) + ) + ); if ic.is_null() { return Err(OsError(format!("XCreateIC failed"))); } @@ -302,8 +310,7 @@ impl Window { // loading the extra GLX functions let extra_functions = ffi::glx_extra::Glx::load_with(|addr| { - use std::c_str::ToCStr; - addr.with_c_str(|s| { + with_c_str(addr, |s| { use libc; ffi::glx::GetProcAddress(s as *const u8) as *const libc::c_void }) @@ -356,12 +363,10 @@ impl Window { } pub fn set_title(&self, title: &str) { - use std::c_str::ToCStr; - let c_title = title.to_c_str(); - unsafe { - ffi::XStoreName(self.x.display, self.x.window, c_title.as_ptr()); + with_c_str(title, |title| unsafe { + ffi::XStoreName(self.x.display, self.x.window, title); ffi::XFlush(self.x.display); - } + }) } pub fn show(&self) { @@ -582,11 +587,10 @@ impl Window { } pub fn get_proc_address(&self, addr: &str) -> *const () { - use std::c_str::ToCStr; use std::mem; unsafe { - addr.with_c_str(|s| { + with_c_str(addr, |s| { ffi::glx::GetProcAddress(mem::transmute(s)) as *const () }) } |