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use crate::{
config::{BORDER_FOCUSED, BORDER_NORMAL},
error::Result,
};
use xcb::{
x::{AllocColor, Colormap, FreeColors},
Connection as RawConnection,
};
/// Caches colours in an X11 color map.
pub struct Colours {
#[allow(unused)] // Make sure the colour map we're using doesn't go anywhere
cmap: Colormap,
border_normal: u32,
border_focused: u32,
}
impl Colours {
/// Load the colours into the given colour map
pub fn new_with(conn: &RawConnection, cmap: Colormap) -> Result<Self> {
let (border_normal, border_focused) = (
conn.send_request(&AllocColor {
cmap,
red: BORDER_NORMAL.0,
green: BORDER_NORMAL.1,
blue: BORDER_NORMAL.2,
}),
conn.send_request(&AllocColor {
cmap,
red: BORDER_FOCUSED.0,
green: BORDER_FOCUSED.1,
blue: BORDER_FOCUSED.2,
}),
);
let (border_normal, border_focused) = (
conn.wait_for_reply(border_normal)?,
conn.wait_for_reply(border_focused)?,
);
Ok(Self {
cmap,
border_normal: border_normal.pixel(),
border_focused: border_focused.pixel(),
})
}
/// Get the pixel ID of the colour for an unfocused window's border.
pub const fn border_normal(&self) -> u32 {
self.border_normal
}
/// Get the pixel ID of the colour for a focused window's border.
pub const fn border_focused(&self) -> u32 {
self.border_focused
}
/// Free the associated resources to avoid leaking them.
/// This object must not be used again after this method is called, as all resources will be invalid.
pub unsafe fn free(&self, conn: &RawConnection) {
conn.send_request(&FreeColors {
cmap: self.cmap,
plane_mask: 0,
pixels: &[self.border_normal, self.border_focused],
});
}
}
/// RGB Colour helper struct to make configuration more convenient.
pub struct Colour(u16, u16, u16);
impl Colour {
/// Get colour from a hex value, such as `0xff00ff`. The top 8 bits are ignored.
pub const fn from_hex(hex: u32) -> Self {
Self(
((hex >> 16 & 0xff) as u16) << 8,
((hex >> 8 & 0xff) as u16) << 8,
((hex & 0xff) as u16) << 8,
)
}
}
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