Add FreeBSD support

Cargo.toml

@@ -28,6 +28,12 @@ x11 = { version = "2.18", features = ["xlib", "xcursor"] }
 xcb-util = { version = "0.3", features = ["icccm"] }
 nix = "0.22.0"
 
+[target.'cfg(target_os="freebsd")'.dependencies]
+xcb = { version = "0.9", features = ["thread", "xlib_xcb", "dri2"] }
+x11 = { version = "2.18", features = ["xlib", "xcursor"] }
+xcb-util = { version = "0.3", features = ["icccm"] }
+nix = "0.22.0"
+
 [target.'cfg(target_os="windows")'.dependencies]
 winapi = { version = "0.3.8", features = ["libloaderapi", "winuser", "windef", "minwindef", "guiddef", "combaseapi", "wingdi", "errhandlingapi"] }
 uuid = { version = "0.8", features = ["v4"], optional = true }

src/gl/mod.rs

@@ -2,7 +2,7 @@ use std::ffi::c_void;
 use std::marker::PhantomData;
 
 // On X11 creating the context is a two step process
-#[cfg(not(target_os = "linux"))]
+#[cfg(not(any(target_os = "linux", target_os = "freebsd")))]
 use raw_window_handle::HasRawWindowHandle;
 
 #[cfg(target_os = "windows")]
@@ -16,6 +16,11 @@ pub(crate) mod x11;
 #[cfg(target_os = "linux")]
 pub(crate) use self::x11 as platform;
 
+#[cfg(target_os = "freebsd")]
+pub(crate) mod x11;
+#[cfg(target_os = "freebsd")]
+pub(crate) use self::x11 as platform;
+
 #[cfg(target_os = "macos")]
 mod macos;
 #[cfg(target_os = "macos")]
@@ -75,7 +80,7 @@ pub struct GlContext {
 }
 
 impl GlContext {
-    #[cfg(not(target_os = "linux"))]
+    #[cfg(not(any(target_os = "linux", target_os = "freebsd")))]
     pub(crate) unsafe fn create(
         parent: &impl HasRawWindowHandle, config: GlConfig,
     ) -> Result<GlContext, GlError> {
@@ -86,7 +91,7 @@ impl GlContext {
     /// The X11 version needs to be set up in a different way compared to the Windows and macOS
     /// versions. So the platform-specific versions should be used to construct the context within
     /// baseview, and then this object can be passed to the user.
-    #[cfg(target_os = "linux")]
+    #[cfg(any(target_os = "linux", target_os = "freebsd"))]
     pub(crate) fn new(context: platform::GlContext) -> GlContext {
         GlContext { context, phantom: PhantomData }
     }

src/keyboard.rs

@@ -17,10 +17,10 @@
 
 //! Keyboard types.
 
-#[cfg(any(target_os = "linux", target_os = "macos"))]
+#[cfg(any(target_os = "linux", target_os = "macos", target_os = "freebsd"))]
 use keyboard_types::{Code, Location};
 
-#[cfg(any(target_os = "linux", target_os = "macos"))]
+#[cfg(any(target_os = "linux", target_os = "macos", target_os = "freebsd"))]
 /// Map key code to location.
 ///
 /// The logic for this is adapted from InitKeyEvent in TextInputHandler (in the Mozilla

src/lib.rs

@@ -4,6 +4,8 @@ mod macos;
 mod win;
 #[cfg(target_os = "linux")]
 mod x11;
+#[cfg(target_os = "freebsd")]
+mod x11;
 
 mod event;
 mod keyboard;

src/window.rs

@@ -11,6 +11,8 @@ use crate::macos as platform;
 use crate::win as platform;
 #[cfg(target_os = "linux")]
 use crate::x11 as platform;
+#[cfg(target_os = "freebsd")]
+use crate::x11 as platform;
 
 pub struct WindowHandle {
     window_handle: platform::WindowHandle,

src/x11/keyboard.rs

@@ -201,7 +201,7 @@ fn code_to_key(code: Code, m: Modifiers) -> Key {
     }
 }
 
-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os = "freebsd"))]
 /// Map hardware keycode to code.
 ///
 /// In theory, the hardware keycode is device dependent, but in