Helper methods on CatpureFilter for matching

Could be prettier, but want some way to check this in multiple places.

src/backend/mod.rs

@@ -44,6 +44,23 @@ pub struct CaptureFilter {
     pub toplevels_on_workspaces: Vec<ExtWorkspaceHandleV1>,
 }
 
+impl CaptureFilter {
+    pub fn workspace_outputs_matches<'a>(
+        &self,
+        outputs: impl IntoIterator<Item = &'a wl_output::WlOutput>,
+    ) -> bool {
+        outputs
+            .into_iter()
+            .any(|o| self.workspaces_on_outputs.contains(o))
+    }
+
+    pub fn toplevel_matches(&self, info: &ToplevelInfo) -> bool {
+        info.workspace
+            .iter()
+            .any(|workspace| self.toplevels_on_workspaces.contains(workspace))
+    }
+}
+
 #[derive(Clone, Debug)]
 pub struct CaptureImage {
     #[allow(dead_code)]

src/backend/wayland/mod.rs

@@ -182,11 +182,7 @@ impl AppData {
                     .toplevels()
                     .find(|info| info.foreign_toplevel == *toplevel);
                 if let Some(info) = info {
-                    info.workspace.iter().any(|workspace| {
+                    self.capture_filter.toplevel_matches(info)
-                        self.capture_filter
-                            .toplevels_on_workspaces
-                            .contains(workspace)
-                    })
                 } else {
                     false
                 }
@@ -197,9 +193,7 @@ impl AppData {
                 .find(|g| g.workspaces.iter().any(|w| w == workspace))
                 .is_some_and(|group| {
                     self.capture_filter
-                        .workspaces_on_outputs
+                        .workspace_outputs_matches(&group.outputs)
-                        .iter()
-                        .any(|o| group.outputs.contains(o))
                 }),
             CaptureSource::Output(_) => false,
         }