Added DynamicSubviewPort class

src/classes/dynamic_subviewport.rs

@@ -0,0 +1,57 @@
+use godot::classes::notify::NodeNotification;
+use godot::prelude::*;
+use godot::classes::SubViewport;
+
+#[derive(GodotClass)]
+#[class(base=SubViewport)]
+struct DynamicSubViewport {
+    base: Base<SubViewport>
+}
+
+use godot::classes::ISubViewport;
+
+#[godot_api]
+impl ISubViewport for DynamicSubViewport {
+
+    fn init(base: Base<SubViewport>) -> Self {
+        Self {
+            base,
+        }
+    }
+
+    fn on_notification(&mut self, what: NodeNotification) {
+        match what {
+            NodeNotification::READY => {
+                let root = self.base_mut().get_tree().unwrap().get_root();
+                match root {
+                    Some(v) => {
+                            self.base_mut().set_size(v.get_size());
+                    },
+                    _ => {}
+                }
+            }
+            NodeNotification::PHYSICS_PROCESS => {
+                let root = self.base_mut().get_tree().unwrap().get_root();
+                match root {
+                    Some(v) => {
+                            self.base_mut().set_size(v.get_size());
+                    },
+                    _ => {}
+                }
+            }
+            // FIXME: WM_SIZE_CHANGED is not what we are looking for, find a better way of detecting
+            // when the viewport size is changed so we don't have to make the viewport the same size as root every frame 
+            
+            // NodeNotification::WM_SIZE_CHANGED => {
+            //     let root = self.base_mut().get_tree().unwrap().get_root();
+            //     match root {
+            //         Some(v) => {
+            //                 self.base_mut().set_size(v.get_size());
+            //         },
+            //         _ => {}
+            //     }
+            // }
+            _ => {}
+        }
+    }
+}

src/classes/mod.rs

@@ -1,3 +1,4 @@
 pub mod scrambling_text;
 pub mod manager;
 pub mod config;
+pub mod dynamic_subviewport;