allow deny capture / emulation

input-capture/src/error.rs

@@ -1,3 +1,4 @@
+use ashpd::desktop::ResponseError;
 use thiserror::Error;
 
 #[cfg(all(unix, feature = "wayland", not(target_os = "macos")))]
@@ -69,6 +70,18 @@ pub enum CaptureCreationError {
     Windows,
 }
 
+impl CaptureCreationError {
+    /// request was intentionally denied by the user
+    pub(crate) fn cancelled_by_user(&self) -> bool {
+        match self {
+            CaptureCreationError::Libei(LibeiCaptureCreationError::Ashpd(
+                ashpd::Error::Response(ResponseError::Cancelled),
+            )) => true,
+            _ => false,
+        }
+    }
+}
+
 #[cfg(all(unix, feature = "libei", not(target_os = "macos")))]
 #[derive(Debug, Error)]
 pub enum LibeiCaptureCreationError {

input-capture/src/lib.rs

@@ -162,6 +162,7 @@ pub async fn create(
                 log::info!("using capture backend: {backend}");
                 return Ok(b);
             }
+            Err(e) if e.cancelled_by_user() => return Err(e),
             Err(e) => log::warn!("{backend} input capture backend unavailable: {e}"),
         }
     }