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|
use xcb::{
x::{self, ChangeProperty, GetProperty, Pixmap, PropMode, Window},
Xid, XidNew,
};
use crate::conn_info::Connection;
/// EWM Hints set on a window.
pub struct Ewm {
flags: u32,
input: bool,
initial_state: i32,
icon_pixmap: Pixmap,
icon_window: Window,
icon_x: i32,
icon_y: i32,
icon_mask: Pixmap,
window_group: u32,
}
impl Ewm {
/// Get the EWM hints for the given window, if they exist and are valid.
pub fn get(conn: &Connection<'_>, window: Window) -> Option<Self> {
// https://github.com/mirror/libX11/blob/ff8706a5eae25b8bafce300527079f68a201d27f/src/GetHints.c#L106
// https://github.com/mirror/libX11/blob/master/src/Xatomtype.h#L111
let hints = conn
.wait_for_reply(conn.send_request(&GetProperty {
window,
delete: false,
property: x::ATOM_WM_HINTS,
r#type: x::ATOM_WM_HINTS,
long_offset: 0,
long_length: 9,
}))
.ok()?;
if hints.r#type() != x::ATOM_WM_HINTS || hints.length() < 8 || hints.format() != 32 {
return None;
}
let [flags, input, initial_state, icon_pixmap, icon_window, icon_x, icon_y, icon_mask, window_group] =
match hints.value::<u32>() {
[f, i, is, ip, iw, ix, iy, im, wg] => [f, i, is, ip, iw, ix, iy, im, wg],
[f, i, is, ip, iw, ix, iy, im] => [f, i, is, ip, iw, ix, iy, im, &0],
_ => unreachable!(),
};
unsafe {
Some(Self {
flags: *flags,
input: *input > 0,
initial_state: std::mem::transmute::<u32, i32>(*initial_state),
icon_pixmap: Pixmap::new(*icon_pixmap),
icon_window: Window::new(*icon_window),
icon_x: std::mem::transmute::<u32, i32>(*icon_x),
icon_y: std::mem::transmute::<u32, i32>(*icon_y),
icon_mask: Pixmap::new(*icon_mask),
window_group: *window_group,
})
}
}
/// Set these WM hints on the given window.
pub fn apply(&self, conn: &Connection<'_>, window: Window) {
conn.send_request(&ChangeProperty {
mode: PropMode::Replace,
window,
property: x::ATOM_WM_HINTS,
r#type: x::ATOM_WM_HINTS,
data: unsafe {
&[
self.flags,
u32::from(self.input),
std::mem::transmute::<i32, u32>(self.initial_state),
self.icon_pixmap.resource_id(),
self.icon_window.resource_id(),
std::mem::transmute::<i32, u32>(self.icon_x),
std::mem::transmute::<i32, u32>(self.icon_y),
self.icon_mask.resource_id(),
self.window_group,
]
},
});
}
/// If the window is flagged as urgent
pub const fn is_urgent(&self) -> bool {
(self.flags & 1 << 8) > 0
}
/// Set the urgent flag. [`Self::apply`] should be called afterwards.
pub fn set_urgent(&mut self, urgent: bool) {
self.flags &= u32::from(urgent) << 8;
}
/// Whether the window has the `input` flag set, unset, or not specified.
pub const fn input(&self) -> Option<bool> {
if (self.flags & 1 << 0) > 0 {
Some(self.input)
} else {
None
}
}
}
/// Gets the `WM_TRANSIENT_FOR` hint set on a window
pub fn transient_for(conn: &Connection, window: Window) -> Option<Window> {
let hints = conn
.wait_for_reply(conn.send_request(&GetProperty {
window,
delete: false,
property: x::ATOM_WM_TRANSIENT_FOR,
r#type: x::ATOM_WINDOW,
long_offset: 0,
long_length: 1,
}))
.ok()?;
if hints.r#type() != x::ATOM_WINDOW || hints.length() < 1 || hints.format() != 32 {
return None;
}
Some(hints.value::<Window>()[0])
}
|
