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Implement transparency for X11

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pinumbernumber 2015-06-14 22:20:32 +01:00
parent a0e29d9410
commit da4bcad6e3
1 changed files with 25 additions and 1 deletions
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26
src/api/x11/window.rs
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@ -339,7 +339,23 @@ impl Window {
if fb.is_null() {
return Err(OsError(format!("glx::ChooseFBConfig failed")));
}
let preferred_fb = *fb; // TODO: choose more wisely
let preferred_fb = if builder.transparent {
let mut best_fbi_for_transparent = 0isize;
for i in 0isize..num_fb as isize {
let vi = display.glx.as_ref().unwrap().GetVisualFromFBConfig(display.display as *mut _, *fb.offset(i));
if (*vi).depth == 32 {
best_fbi_for_transparent = i;
break;
}
}
*fb.offset(best_fbi_for_transparent)
} else {
*fb // TODO: choose more wisely
};
(display.xlib.XFree)(fb as *mut _);
preferred_fb
};
@ -425,11 +441,19 @@ impl Window {
ffi::KeyReleaseMask | ffi::ButtonPressMask |
ffi::ButtonReleaseMask | ffi::KeymapStateMask;
swa.border_pixel = 0;
if builder.transparent {
swa.background_pixel = 0;
}
swa.override_redirect = 0;
swa
};
let mut window_attributes = ffi::CWBorderPixel | ffi::CWColormap | ffi::CWEventMask;
if builder.transparent {
window_attributes |= ffi::CWBackPixel;
}
if builder.monitor.is_some() {
window_attributes |= ffi::CWOverrideRedirect;
unsafe {