gtk: Add Gsk.ComponentTransfer as manual to generate new API

Author: sdroege

gtk4/Gir.toml

@@ -364,6 +364,7 @@ manual = [
     "Gsk.BlendMode",
     "Gsk.CairoNode", # docs only
     "Gsk.ColorStop",
+    "Gsk.ComponentTransfer",
     "Gsk.FillRule",
     "Gsk.GLShaderNode", # docs only
     "Gsk.MaskMode",

gtk4/src/auto/snapshot.rs

@@ -371,12 +371,26 @@ pub trait SnapshotExt: IsA<Snapshot> + 'static {
         }
     }
 
-    //#[cfg(feature = "v4_20")]
-    //#[cfg_attr(docsrs, doc(cfg(feature = "v4_20")))]
-    //#[doc(alias = "gtk_snapshot_push_component_transfer")]
-    //fn push_component_transfer(&self, red: /*Ignored*/&gsk::ComponentTransfer, green: /*Ignored*/&gsk::ComponentTransfer, blue: /*Ignored*/&gsk::ComponentTransfer, alpha: /*Ignored*/&gsk::ComponentTransfer) {
-    //    unsafe { TODO: call ffi:gtk_snapshot_push_component_transfer() }
-    //}
+    #[cfg(feature = "v4_20")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "v4_20")))]
+    #[doc(alias = "gtk_snapshot_push_component_transfer")]
+    fn push_component_transfer(
+        &self,
+        red: &gsk::ComponentTransfer,
+        green: &gsk::ComponentTransfer,
+        blue: &gsk::ComponentTransfer,
+        alpha: &gsk::ComponentTransfer,
+    ) {
+        unsafe {
+            ffi::gtk_snapshot_push_component_transfer(
+                self.as_ref().to_glib_none().0,
+                red.to_glib_none().0,
+                green.to_glib_none().0,
+                blue.to_glib_none().0,
+                alpha.to_glib_none().0,
+            );
+        }
+    }
 
     #[doc(alias = "gtk_snapshot_push_cross_fade")]
     fn push_cross_fade(&self, progress: f64) {