ghostty/src/os/desktop.zig
2023-09-29 15:52:45 -07:00

49 lines
1.7 KiB
Zig

const std = @import("std");
const builtin = @import("builtin");
const build_config = @import("../build_config.zig");
const c = @cImport({
@cInclude("unistd.h");
});
/// Returns true if the program was launched from a desktop environment.
///
/// On macOS, this returns true if the program was launched from Finder.
///
/// On Linux GTK, this returns true if the program was launched using the
/// desktop file. This also includes when `gtk-launch` is used because I
/// can't find a way to distinguish the two scenarios.
///
/// For other platforms and app runtimes, this returns false.
pub fn launchedFromDesktop() bool {
if (comptime build_config.artifact != .exe) return false;
return switch (builtin.os.tag) {
// macOS apps launched from finder or `open` always have the init
// process as their parent.
.macos => c.getppid() == 1,
// On Linux, GTK sets GIO_LAUNCHED_DESKTOP_FILE and
// GIO_LAUNCHED_DESKTOP_FILE_PID. We only check the latter to see if
// we match the PID and assume that if we do, we were launched from
// the desktop file. Pid comparing catches the scenario where
// another terminal was launched from a desktop file and then launches
// Ghostty and Ghostty inherits the env.
.linux => linux: {
const gio_pid_str = std.os.getenv("GIO_LAUNCHED_DESKTOP_FILE_PID") orelse
break :linux false;
const pid = c.getpid();
const gio_pid = std.fmt.parseInt(
@TypeOf(pid),
gio_pid_str,
10,
) catch break :linux false;
break :linux gio_pid == pid;
},
else => @compileError("unsupported platform"),
};
}