Fix artboard tool and remove old artboard code

editor/src/messages/dialog/export_dialog/export_dialog_message_handler.rs

@@ -2,7 +2,7 @@ use crate::messages::frontend::utility_types::{ExportBounds, FileType};
 use crate::messages::layout::utility_types::widget_prelude::*;
 use crate::messages::prelude::*;
 
-use document_legacy::LayerId;
+use document_legacy::document_metadata::LayerNodeIdentifier;
 
 /// A dialog to allow users to customize their file export.
 #[derive(Debug, Clone, Default)]
@@ -11,7 +11,7 @@ pub struct ExportDialogMessageHandler {
 	pub scale_factor: f64,
 	pub bounds: ExportBounds,
 	pub transparent_background: bool,
-	pub artboards: HashMap<LayerId, String>,
+	pub artboards: HashMap<LayerNodeIdentifier, String>,
 	pub has_selection: bool,
 }
 
@@ -86,7 +86,20 @@ impl LayoutHolder for ExportDialogMessageHandler {
 				.widget_holder(),
 		];
 
-		let artboards = self.artboards.iter().map(|(&val, name)| (ExportBounds::Artboard(val), name.to_string(), false));
+		let resolution = vec![
+			TextLabel::new("Scale Factor").table_align(true).min_width(100).widget_holder(),
+			Separator::new(SeparatorType::Unrelated).widget_holder(),
+			NumberInput::new(Some(self.scale_factor))
+				.unit("")
+				.min(0.)
+				.max((1u64 << std::f64::MANTISSA_DIGITS) as f64)
+				.disabled(self.file_type == FileType::Svg)
+				.on_update(|number_input: &NumberInput| ExportDialogMessage::ScaleFactor(number_input.value.unwrap()).into())
+				.min_width(200)
+				.widget_holder(),
+		];
+
+		let artboards = self.artboards.iter().map(|(&layer, name)| (ExportBounds::Artboard(layer), name.to_string(), false));
 		let mut export_area_options = vec![
 			(ExportBounds::AllArtwork, "All Artwork".to_string(), false),
 			(ExportBounds::Selection, "Selection".to_string(), !self.has_selection),