Apply lints and cleanup to Rust code

editor/src/messages/portfolio/document/document_message_handler.rs

@@ -1661,7 +1661,10 @@ impl DocumentMessageHandler {
 				direction: SeparatorDirection::Horizontal,
 			})),
 			WidgetHolder::new(Widget::RadioInput(RadioInput {
-				selected_index: if self.view_mode == ViewMode::Normal { 0 } else { 1 },
+				selected_index: match self.view_mode {
+					ViewMode::Normal => 0,
+					_ => 1,
+				},
 				entries: vec![
 					RadioEntryData {
 						value: "normal".into(),

editor/src/messages/portfolio/document/navigation/navigation_message_handler.rs

@@ -141,7 +141,7 @@ impl MessageHandler<NavigationMessage, (&Document, &InputPreprocessorMessageHand
 					}
 					self.snap_zoom = new_snap;
 
-					let difference = self.mouse_position.y as f64 - ipp.mouse.position.y as f64;
+					let difference = self.mouse_position.y - ipp.mouse.position.y;
 					let amount = 1. + difference * VIEWPORT_ZOOM_MOUSE_RATE;
 
 					self.zoom *= amount;

editor/src/messages/portfolio/document/transform_layer/transform_layer_message_handler.rs

@@ -31,7 +31,7 @@ impl<'a> MessageHandler<TransformLayerMessage, TransformData<'a>> for TransformL
 	fn process_message(&mut self, message: TransformLayerMessage, (layer_metadata, document, ipp, font_cache): TransformData, responses: &mut VecDeque<Message>) {
 		use TransformLayerMessage::*;
 
-		let selected_layers = layer_metadata.iter().filter_map(|(layer_path, data)| data.selected.then(|| layer_path)).collect::<Vec<_>>();
+		let selected_layers = layer_metadata.iter().filter_map(|(layer_path, data)| data.selected.then_some(layer_path)).collect::<Vec<_>>();
 		let mut selected = Selected::new(&mut self.original_transforms, &mut self.pivot, &selected_layers, responses, document);
 
 		let mut begin_operation = |operation: TransformOperation, typing: &mut Typing, mouse_position: &mut DVec2, start_mouse: &mut DVec2| {

editor/src/messages/portfolio/document/utility_types/transformation.rs

@@ -11,19 +11,14 @@ use std::collections::{HashMap, VecDeque};
 
 pub type OriginalTransforms = HashMap<Vec<LayerId>, DAffine2>;
 
-#[derive(Debug, Clone, PartialEq, Eq, Copy)]
+#[derive(Default, Debug, Clone, PartialEq, Eq, Copy)]
 pub enum Axis {
+	#[default]
 	Both,
 	X,
 	Y,
 }
 
-impl Default for Axis {
-	fn default() -> Self {
-		Self::Both
-	}
-}
-
 impl Axis {
 	pub fn set_or_toggle(&mut self, target: Axis) {
 		// If constrained to an axis and target is requesting the same axis, toggle back to Both
@@ -137,20 +132,15 @@ impl Scale {
 	}
 }
 
-#[derive(Debug, Clone, PartialEq, Copy)]
+#[derive(Default, Debug, Clone, PartialEq, Copy)]
 pub enum TransformOperation {
+	#[default]
 	None,
 	Grabbing(Translation),
 	Rotating(Rotation),
 	Scaling(Scale),
 }
 
-impl Default for TransformOperation {
-	fn default() -> Self {
-		TransformOperation::None
-	}
-}
-
 impl TransformOperation {
 	pub fn apply_transform_operation(&self, selected: &mut Selected, snapping: bool) {
 		if self != &TransformOperation::None {