move feature flags to build.rs

input-capture/build.rs

@@ -0,0 +1,25 @@
+fn main() {
+    let unix = cfg!(unix);
+    let layer_shell = cfg!(feature = "layer_shell");
+    let libei = cfg!(feature = "libei");
+    let x11 = cfg!(feature = "x11");
+    let macos = cfg!(target_os = "macos");
+
+    let libei = unix && !macos && libei;
+    let layer_shell = unix && !macos && layer_shell;
+    let x11 = unix && !macos && x11;
+
+    println!("cargo::rustc-check-cfg=cfg(layer_shell)");
+    println!("cargo::rustc-check-cfg=cfg(libei)");
+    println!("cargo::rustc-check-cfg=cfg(x11)");
+
+    if layer_shell {
+        println!("cargo::rustc-cfg=layer_shell");
+    }
+    if libei {
+        println!("cargo::rustc-cfg=libei");
+    }
+    if x11 {
+        println!("cargo::rustc-cfg=x11");
+    }
+}

input-capture/src/error.rs

@@ -8,16 +8,16 @@ pub enum InputCaptureError {
     Capture(#[from] CaptureError),
 }
 
-#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+#[cfg(layer_shell)]
 use std::io;
-#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+#[cfg(layer_shell)]
 use wayland_client::{
     ConnectError, DispatchError,
     backend::WaylandError,
     globals::{BindError, GlobalError},
 };
 
-#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+#[cfg(libei)]
 use ashpd::desktop::ResponseError;
 
 #[cfg(target_os = "macos")]
@@ -31,13 +31,13 @@ pub enum CaptureError {
     EndOfStream,
     #[error("io error: `{0}`")]
     Io(#[from] std::io::Error),
-    #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+    #[cfg(libei)]
     #[error("libei error: `{0}`")]
     Reis(#[from] reis::Error),
-    #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+    #[cfg(libei)]
     #[error(transparent)]
     Portal(#[from] ashpd::Error),
-    #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+    #[cfg(libei)]
     #[error("libei disconnected - reason: `{0}`")]
     Disconnected(String),
     #[cfg(target_os = "macos")]
@@ -61,13 +61,13 @@ pub enum CaptureError {
 pub enum CaptureCreationError {
     #[error("no backend available")]
     NoAvailableBackend,
-    #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+    #[cfg(libei)]
     #[error("error creating input-capture-portal backend: `{0}`")]
     Libei(#[from] LibeiCaptureCreationError),
-    #[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+    #[cfg(layer_shell)]
     #[error("error creating layer-shell capture backend: `{0}`")]
     LayerShell(#[from] LayerShellCaptureCreationError),
-    #[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
+    #[cfg(x11)]
     #[error("error creating x11 capture backend: `{0}`")]
     X11(#[from] X11InputCaptureCreationError),
     #[cfg(windows)]
@@ -80,7 +80,7 @@ pub enum CaptureCreationError {
 
 impl CaptureCreationError {
     /// request was intentionally denied by the user
-    #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+    #[cfg(libei)]
     pub(crate) fn cancelled_by_user(&self) -> bool {
         matches!(
             self,
@@ -89,20 +89,20 @@ impl CaptureCreationError {
             )))
         )
     }
-    #[cfg(not(all(unix, feature = "libei", not(target_os = "macos"))))]
+    #[cfg(not(libei))]
     pub(crate) fn cancelled_by_user(&self) -> bool {
         false
     }
 }
 
-#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+#[cfg(libei)]
 #[derive(Debug, Error)]
 pub enum LibeiCaptureCreationError {
     #[error("xdg-desktop-portal: `{0}`")]
     Ashpd(#[from] ashpd::Error),
 }
 
-#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+#[cfg(layer_shell)]
 #[derive(Debug, Error)]
 #[error("{protocol} protocol not supported: {inner}")]
 pub struct WaylandBindError {
@@ -110,14 +110,14 @@ pub struct WaylandBindError {
     protocol: &'static str,
 }
 
-#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+#[cfg(layer_shell)]
 impl WaylandBindError {
     pub(crate) fn new(inner: BindError, protocol: &'static str) -> Self {
         Self { inner, protocol }
     }
 }
 
-#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+#[cfg(layer_shell)]
 #[derive(Debug, Error)]
 pub enum LayerShellCaptureCreationError {
     #[error(transparent)]
@@ -134,7 +134,7 @@ pub enum LayerShellCaptureCreationError {
     Io(#[from] io::Error),
 }
 
-#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
+#[cfg(x11)]
 #[derive(Debug, Error)]
 pub enum X11InputCaptureCreationError {
     #[error("X11 input capture is not yet implemented :(")]

input-capture/src/lib.rs

@@ -15,19 +15,19 @@ pub use error::{CaptureCreationError, CaptureError, InputCaptureError};
 
 pub mod error;
 
-#[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+#[cfg(libei)]
 mod libei;
 
 #[cfg(target_os = "macos")]
 mod macos;
 
-#[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+#[cfg(layer_shell)]
 mod layer_shell;
 
 #[cfg(windows)]
 mod windows;
 
-#[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
+#[cfg(x11)]
 mod x11;
 
 /// fallback input capture (does not produce events)
@@ -85,11 +85,11 @@ impl Display for Position {
 
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum Backend {
-    #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+    #[cfg(libei)]
     InputCapturePortal,
-    #[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+    #[cfg(layer_shell)]
     LayerShell,
-    #[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
+    #[cfg(x11)]
     X11,
     #[cfg(windows)]
     Windows,
@@ -101,11 +101,11 @@ pub enum Backend {
 impl Display for Backend {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+            #[cfg(libei)]
             Backend::InputCapturePortal => write!(f, "input-capture-portal"),
-            #[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+            #[cfg(layer_shell)]
             Backend::LayerShell => write!(f, "layer-shell"),
-            #[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
+            #[cfg(x11)]
             Backend::X11 => write!(f, "X11"),
             #[cfg(windows)]
             Backend::Windows => write!(f, "windows"),
@@ -298,11 +298,11 @@ async fn create_backend(
     CaptureCreationError,
 > {
     match backend {
-        #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+        #[cfg(libei)]
         Backend::InputCapturePortal => Ok(Box::new(libei::LibeiInputCapture::new().await?)),
-        #[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+        #[cfg(layer_shell)]
         Backend::LayerShell => Ok(Box::new(layer_shell::LayerShellInputCapture::new()?)),
-        #[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
+        #[cfg(x11)]
         Backend::X11 => Ok(Box::new(x11::X11InputCapture::new()?)),
         #[cfg(windows)]
         Backend::Windows => Ok(Box::new(windows::WindowsInputCapture::new())),
@@ -327,11 +327,11 @@ async fn create(
     }
 
     for backend in [
-        #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
+        #[cfg(libei)]
         Backend::InputCapturePortal,
-        #[cfg(all(unix, feature = "layer_shell", not(target_os = "macos")))]
+        #[cfg(layer_shell)]
         Backend::LayerShell,
-        #[cfg(all(unix, feature = "x11", not(target_os = "macos")))]
+        #[cfg(x11)]
         Backend::X11,
         #[cfg(windows)]
         Backend::Windows,