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Support disabling window decorations in X11

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This uses the incredibly old and ugly _MOTIF_WM_HINTS property:
http://stackoverflow.com/questions/5134297/xlib-how-does-this-removing-window-decoration-work

Using _NET_WM_WINDOW_TYPE from the Extended Window Manager Hints spec
(https://specifications.freedesktop.org/wm-spec/wm-spec-latest.html)
would be preferred, but it requires knowing up front what the user
intends their window to be. _MOTIF_WM_HINTS should work for now.
This commit is contained in:
Gabriel Martinez 2017-03-05 09:27:03 -08:00
parent 503df767dc
commit 0b530b026d
1 changed files with 43 additions and 0 deletions
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43
src/platform/linux/x11/window.rs
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@ -596,6 +596,7 @@ impl Window {
};
window.set_title(&window_attrs.title);
window.set_decorations(window_attrs.decorations);
if window_attrs.visible {
unsafe {
@ -653,6 +654,48 @@ impl Window {
}
pub fn set_decorations(&self, decorations: bool) {
#[repr(C)]
struct MotifWindowHints {
flags: u32,
functions: u32,
decorations: u32,
input_mode: i32,
status: u32,
}
let wm_hints = unsafe {
(self.x.display.xlib.XInternAtom)(self.x.display.display, b"_MOTIF_WM_HINTS\0".as_ptr() as *const _, 0)
};
self.x.display.check_errors().expect("Failed to call XInternAtom");
if !decorations {
let hints = MotifWindowHints {
flags: 2, // MWM_HINTS_DECORATIONS
functions: 0,
decorations: 0,
input_mode: 0,
status: 0,
};
unsafe {
(self.x.display.xlib.XChangeProperty)(
self.x.display.display, self.x.window,
wm_hints, wm_hints, 32 /* Size of elements in struct */,
ffi::PropModeReplace, &hints as *const MotifWindowHints as *const u8,
5 /* Number of elements in struct */);
(self.x.display.xlib.XFlush)(self.x.display.display);
}
} else {
unsafe {
(self.x.display.xlib.XDeleteProperty)(self.x.display.display, self.x.window, wm_hints);
(self.x.display.xlib.XFlush)(self.x.display.display);
}
}
self.x.display.check_errors().expect("Failed to set decorations");
}
pub fn show(&self) {
unsafe {
(self.x.display.xlib.XMapRaised)(self.x.display.display, self.x.window);