Files
opencode/packages/desktop/src-tauri/src/linux_windowing.rs

476 lines
13 KiB
Rust

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Backend {
Auto,
Wayland,
X11,
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct BackendDecision {
pub backend: Backend,
pub note: String,
}
#[derive(Debug, Clone, Default)]
pub struct SessionEnv {
pub wayland_display: bool,
pub xdg_session_type: Option<String>,
pub display: bool,
pub xdg_current_desktop: Option<String>,
pub xdg_session_desktop: Option<String>,
pub desktop_session: Option<String>,
pub oc_allow_wayland: Option<String>,
pub oc_force_x11: Option<String>,
pub oc_force_wayland: Option<String>,
pub oc_linux_decorations: Option<String>,
pub oc_force_decorations: Option<String>,
pub oc_no_decorations: Option<String>,
pub i3_sock: bool,
}
impl SessionEnv {
pub fn capture() -> Self {
Self {
wayland_display: std::env::var_os("WAYLAND_DISPLAY").is_some(),
xdg_session_type: std::env::var("XDG_SESSION_TYPE").ok(),
display: std::env::var_os("DISPLAY").is_some(),
xdg_current_desktop: std::env::var("XDG_CURRENT_DESKTOP").ok(),
xdg_session_desktop: std::env::var("XDG_SESSION_DESKTOP").ok(),
desktop_session: std::env::var("DESKTOP_SESSION").ok(),
oc_allow_wayland: std::env::var("OC_ALLOW_WAYLAND").ok(),
oc_force_x11: std::env::var("OC_FORCE_X11").ok(),
oc_force_wayland: std::env::var("OC_FORCE_WAYLAND").ok(),
oc_linux_decorations: std::env::var("OC_LINUX_DECORATIONS").ok(),
oc_force_decorations: std::env::var("OC_FORCE_DECORATIONS").ok(),
oc_no_decorations: std::env::var("OC_NO_DECORATIONS").ok(),
i3_sock: std::env::var_os("I3SOCK").is_some(),
}
}
}
pub fn select_backend(env: &SessionEnv, prefer_wayland: bool) -> Option<BackendDecision> {
if is_truthy(env.oc_force_x11.as_deref()) {
return Some(BackendDecision {
backend: Backend::X11,
note: "Forcing X11 due to OC_FORCE_X11=1".into(),
});
}
if is_truthy(env.oc_force_wayland.as_deref()) {
return Some(BackendDecision {
backend: Backend::Wayland,
note: "Forcing native Wayland due to OC_FORCE_WAYLAND=1".into(),
});
}
if !is_wayland_session(env) {
return None;
}
if prefer_wayland {
return Some(BackendDecision {
backend: Backend::Wayland,
note: "Wayland session detected; forcing native Wayland from settings".into(),
});
}
if is_truthy(env.oc_allow_wayland.as_deref()) {
return Some(BackendDecision {
backend: Backend::Wayland,
note: "Wayland session detected; forcing native Wayland due to OC_ALLOW_WAYLAND=1"
.into(),
});
}
Some(BackendDecision {
backend: Backend::Auto,
note: "Wayland session detected; using native Wayland first with X11 fallback (auto backend). Set OC_FORCE_X11=1 to force X11."
.into(),
})
}
pub fn use_decorations(env: &SessionEnv) -> bool {
if let Some(mode) = decoration_override(env.oc_linux_decorations.as_deref()) {
return match mode {
DecorationOverride::Native => true,
DecorationOverride::None => false,
DecorationOverride::Auto => default_use_decorations(env),
};
}
if is_truthy(env.oc_force_decorations.as_deref()) {
return true;
}
if is_truthy(env.oc_no_decorations.as_deref()) {
return false;
}
default_use_decorations(env)
}
fn default_use_decorations(env: &SessionEnv) -> bool {
if is_known_tiling_session(env) {
return false;
}
if !is_wayland_session(env) {
return true;
}
is_full_desktop_session(env)
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
enum DecorationOverride {
Auto,
Native,
None,
}
fn decoration_override(value: Option<&str>) -> Option<DecorationOverride> {
let value = value?.trim().to_ascii_lowercase();
if matches!(value.as_str(), "auto") {
return Some(DecorationOverride::Auto);
}
if matches!(
value.as_str(),
"native" | "server" | "de" | "wayland" | "on" | "true" | "1"
) {
return Some(DecorationOverride::Native);
}
if matches!(
value.as_str(),
"none" | "off" | "false" | "0" | "client" | "csd"
) {
return Some(DecorationOverride::None);
}
None
}
fn is_truthy(value: Option<&str>) -> bool {
matches!(
value.map(|v| v.trim().to_ascii_lowercase()),
Some(v) if matches!(v.as_str(), "1" | "true" | "yes" | "on")
)
}
fn is_wayland_session(env: &SessionEnv) -> bool {
env.wayland_display
|| matches!(
env.xdg_session_type.as_deref(),
Some(value) if value.eq_ignore_ascii_case("wayland")
)
}
fn is_full_desktop_session(env: &SessionEnv) -> bool {
desktop_tokens(env).any(|value| {
matches!(
value.as_str(),
"gnome"
| "kde"
| "plasma"
| "xfce"
| "xfce4"
| "x-cinnamon"
| "cinnamon"
| "mate"
| "lxqt"
| "budgie"
| "pantheon"
| "deepin"
| "unity"
| "cosmic"
)
})
}
fn is_known_tiling_session(env: &SessionEnv) -> bool {
if env.i3_sock {
return true;
}
desktop_tokens(env).any(|value| {
matches!(
value.as_str(),
"niri"
| "sway"
| "swayfx"
| "hyprland"
| "river"
| "i3"
| "i3wm"
| "bspwm"
| "dwm"
| "qtile"
| "xmonad"
| "leftwm"
| "dwl"
| "awesome"
| "herbstluftwm"
| "spectrwm"
| "worm"
| "i3-gnome"
)
})
}
fn desktop_tokens<'a>(env: &'a SessionEnv) -> impl Iterator<Item = String> + 'a {
[
env.xdg_current_desktop.as_deref(),
env.xdg_session_desktop.as_deref(),
env.desktop_session.as_deref(),
]
.into_iter()
.flatten()
.flat_map(|desktop| desktop.split(':'))
.map(|value| value.trim().to_ascii_lowercase())
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn prefers_wayland_first_on_wayland_session() {
let env = SessionEnv {
wayland_display: true,
display: true,
..Default::default()
};
let decision = select_backend(&env, false).expect("missing decision");
assert_eq!(decision.backend, Backend::Auto);
}
#[test]
fn force_x11_override_wins() {
let env = SessionEnv {
wayland_display: true,
display: true,
oc_force_x11: Some("1".into()),
oc_allow_wayland: Some("1".into()),
oc_force_wayland: Some("1".into()),
..Default::default()
};
let decision = select_backend(&env, true).expect("missing decision");
assert_eq!(decision.backend, Backend::X11);
}
#[test]
fn prefer_wayland_forces_wayland_backend() {
let env = SessionEnv {
wayland_display: true,
display: true,
..Default::default()
};
let decision = select_backend(&env, true).expect("missing decision");
assert_eq!(decision.backend, Backend::Wayland);
}
#[test]
fn force_wayland_override_works_outside_wayland_session() {
let env = SessionEnv {
display: true,
oc_force_wayland: Some("1".into()),
..Default::default()
};
let decision = select_backend(&env, false).expect("missing decision");
assert_eq!(decision.backend, Backend::Wayland);
}
#[test]
fn allow_wayland_forces_wayland_backend() {
let env = SessionEnv {
wayland_display: true,
display: true,
oc_allow_wayland: Some("1".into()),
..Default::default()
};
let decision = select_backend(&env, false).expect("missing decision");
assert_eq!(decision.backend, Backend::Wayland);
}
#[test]
fn xdg_session_type_wayland_is_detected() {
let env = SessionEnv {
xdg_session_type: Some("wayland".into()),
..Default::default()
};
let decision = select_backend(&env, false).expect("missing decision");
assert_eq!(decision.backend, Backend::Auto);
}
#[test]
fn returns_none_when_not_wayland_and_no_overrides() {
let env = SessionEnv {
display: true,
xdg_current_desktop: Some("GNOME".into()),
..Default::default()
};
assert!(select_backend(&env, false).is_none());
}
#[test]
fn prefer_wayland_setting_does_not_override_x11_session() {
let env = SessionEnv {
display: true,
xdg_current_desktop: Some("GNOME".into()),
..Default::default()
};
assert!(select_backend(&env, true).is_none());
}
#[test]
fn disables_decorations_on_niri() {
let env = SessionEnv {
xdg_current_desktop: Some("niri".into()),
wayland_display: true,
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn keeps_decorations_on_gnome() {
let env = SessionEnv {
xdg_current_desktop: Some("GNOME".into()),
wayland_display: true,
..Default::default()
};
assert!(use_decorations(&env));
}
#[test]
fn disables_decorations_when_session_desktop_is_tiling() {
let env = SessionEnv {
xdg_session_desktop: Some("Hyprland".into()),
wayland_display: true,
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn disables_decorations_for_unknown_wayland_session() {
let env = SessionEnv {
xdg_current_desktop: Some("labwc".into()),
wayland_display: true,
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn disables_decorations_for_dwm_on_x11() {
let env = SessionEnv {
xdg_current_desktop: Some("dwm".into()),
display: true,
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn disables_decorations_for_i3_on_x11() {
let env = SessionEnv {
xdg_current_desktop: Some("i3".into()),
display: true,
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn disables_decorations_for_i3sock_without_xdg_tokens() {
let env = SessionEnv {
display: true,
i3_sock: true,
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn keeps_decorations_for_gnome_on_x11() {
let env = SessionEnv {
xdg_current_desktop: Some("GNOME".into()),
display: true,
..Default::default()
};
assert!(use_decorations(&env));
}
#[test]
fn no_decorations_override_wins() {
let env = SessionEnv {
xdg_current_desktop: Some("GNOME".into()),
oc_no_decorations: Some("1".into()),
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn linux_decorations_native_override_wins() {
let env = SessionEnv {
xdg_current_desktop: Some("niri".into()),
wayland_display: true,
oc_linux_decorations: Some("native".into()),
..Default::default()
};
assert!(use_decorations(&env));
}
#[test]
fn linux_decorations_none_override_wins() {
let env = SessionEnv {
xdg_current_desktop: Some("GNOME".into()),
wayland_display: true,
oc_linux_decorations: Some("none".into()),
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn linux_decorations_auto_uses_default_policy() {
let env = SessionEnv {
xdg_current_desktop: Some("sway".into()),
wayland_display: true,
oc_linux_decorations: Some("auto".into()),
..Default::default()
};
assert!(!use_decorations(&env));
}
#[test]
fn linux_decorations_override_beats_legacy_overrides() {
let env = SessionEnv {
xdg_current_desktop: Some("GNOME".into()),
wayland_display: true,
oc_linux_decorations: Some("none".into()),
oc_force_decorations: Some("1".into()),
..Default::default()
};
assert!(!use_decorations(&env));
}
}