Implement layer renaming (#501)

* Implement layer renaming

* Fix sneaky typo in CSS

Co-authored-by: Moritz Vetter <16950410+HansAuger@users.noreply.github.com>

Co-authored-by: Moritz Vetter <16950410+HansAuger@users.noreply.github.com>

editor/src/document/document_message.rs

@@ -99,6 +99,10 @@ pub enum DocumentMessage {
 		layer_path: Vec<LayerId>,
 		set_expanded: bool,
 	},
+	SetLayerName {
+		layer_path: Vec<LayerId>,
+		name: String,
+	},
 	SetOpacityForSelectedLayers {
 		opacity: f64,
 	},

editor/src/document/document_message_handler.rs

@@ -401,6 +401,7 @@ impl DocumentMessageHandler {
 		}
 	}
 
+	// TODO: This should probably take a slice not a vec, also why does this even exist when `layer_panel_entry_from_path` also exists?
 	pub fn layer_panel_entry(&mut self, path: Vec<LayerId>) -> Result<LayerPanelEntry, EditorError> {
 		let data: LayerMetadata = *self
 			.layer_metadata
@@ -927,6 +928,15 @@ impl MessageHandler<DocumentMessage, &InputPreprocessorMessageHandler> for Docum
 				responses.push_back(DocumentStructureChanged.into());
 				responses.push_back(LayerChanged { affected_layer_path: layer_path }.into())
 			}
+			SetLayerName { layer_path, name } => {
+				if let Some(layer) = self.layer_panel_entry_from_path(&layer_path) {
+					// Only save the history state if the name actually changed to something different
+					if layer.name != name {
+						self.backup(responses);
+						responses.push_back(DocumentOperation::SetLayerName { path: layer_path, name }.into());
+					}
+				}
+			}
 			SetOpacityForSelectedLayers { opacity } => {
 				self.backup(responses);
 				let opacity = opacity.clamp(0., 1.);

editor/src/document/layer_panel.rs

@@ -21,8 +21,7 @@ impl LayerMetadata {
 }
 
 pub fn layer_panel_entry(layer_metadata: &LayerMetadata, transform: DAffine2, layer: &Layer, path: Vec<LayerId>) -> LayerPanelEntry {
-	let layer_type: LayerDataTypeDiscriminant = (&layer.data).into();
-	let name = layer.name.clone().unwrap_or_else(|| format!("Unnamed {}", layer_type));
+	let name = layer.name.clone().unwrap_or_else(|| String::from(""));
 	let arr = layer.data.bounding_box(transform).unwrap_or([DVec2::ZERO, DVec2::ZERO]);
 	let arr = arr.iter().map(|x| (*x).into()).collect::<Vec<(f64, f64)>>();
 

editor/src/viewport_tools/snapping.rs

@@ -21,7 +21,7 @@ impl SnapHandler {
 		overlay_paths: &mut Vec<Vec<LayerId>>,
 		responses: &mut VecDeque<Message>,
 		viewport_bounds: DVec2,
-		(positions_and_distances): (impl Iterator<Item = (f64, f64)>, impl Iterator<Item = (f64, f64)>),
+		positions_and_distances: (impl Iterator<Item = (f64, f64)>, impl Iterator<Item = (f64, f64)>),
 		closest_distance: DVec2,
 	) {
 		/// Draws an alignment line overlay with the correct transform and fade opacity, reusing lines from the pool if available.