Add a dropdown for resource selection and adopt it in the 'Image' node (#4543)

* Add a dropdown for resource selection and adopt it in the Image node

* Route every image upload through a new ResourceUpload handler with desktop support and migrate wired 'Image' node inputs

* Show each resource's user count in the resource picker dropdown

* Send a picked resource file to the document that requested it, list every non-font resource in the picker, and link sibling message docs

frontend/wrapper/src/editor_commands.rs

@@ -20,10 +20,12 @@ mod editor_commands {
 	use editor::messages::portfolio::document::node_graph::document_node_definitions::DefinitionIdentifier;
 	use editor::messages::portfolio::document::utility_types::document_metadata::LayerNodeIdentifier;
 	use editor::messages::portfolio::document::utility_types::network_interface::ImportOrExport;
+	use editor::messages::portfolio::resource_upload::utility_types::UploadTarget;
 	use editor::messages::portfolio::utility_types::PanelGroupId;
 	use editor::messages::prelude::*;
 	use editor::messages::tool::tool_messages::tool_prelude::WidgetId;
 	use graph_craft::document::NodeId;
+	use graphene_std::raster::Image;
 	use graphene_std::raster::color::Color;
 	use graphene_std::vector::style::FillChoice;
 	use std::path::PathBuf;
@@ -613,7 +615,7 @@ mod editor_commands {
 		.into()
 	}
 
-	/// Pastes an image
+	/// Pastes decoded RGBA8 pixels as an image layer, encoded as PNG for storage
 	fn paste_image(
 		name: Option<String>,
 		image_data: Vec<u8>,
@@ -625,7 +627,7 @@ mod editor_commands {
 		insert_index: Option<usize>,
 	) -> Message {
 		let mouse = mouse_x.and_then(|x| mouse_y.map(|y| (x, y)));
-		let image = graphene_std::raster::Image::from_image_data(&image_data, width, height);
+		let data = Image::from_image_data(&image_data, width, height).to_png();
 
 		let parent_and_insert_index = if let (Some(insert_parent_id), Some(insert_index)) = (insert_parent_id, insert_index) {
 			let insert_parent_id = NodeId(insert_parent_id);
@@ -635,15 +637,39 @@ mod editor_commands {
 			None
 		};
 
-		PortfolioMessage::InsertImage {
+		ResourceUploadMessage::Upload {
 			name,
-			image,
-			mouse,
-			parent_and_insert_index,
+			data: data.into(),
+			target: UploadTarget::Layer { mouse, parent_and_insert_index },
 		}
 		.into()
 	}
 
+	/// Pastes an image file as an image layer, keeping its original encoding
+	fn paste_image_file(name: Option<String>, data: Vec<u8>, mouse_x: Option<f64>, mouse_y: Option<f64>, insert_parent_id: Option<u64>, insert_index: Option<usize>) -> Message {
+		let mouse = mouse_x.and_then(|x| mouse_y.map(|y| (x, y)));
+
+		let parent_and_insert_index = if let (Some(insert_parent_id), Some(insert_index)) = (insert_parent_id, insert_index) {
+			let insert_parent_id = NodeId(insert_parent_id);
+			let parent = LayerNodeIdentifier::new_unchecked(insert_parent_id);
+			Some((parent, insert_index))
+		} else {
+			None
+		};
+
+		ResourceUploadMessage::Upload {
+			name,
+			data: data.into(),
+			target: UploadTarget::Layer { mouse, parent_and_insert_index },
+		}
+		.into()
+	}
+
+	/// Hands the file picked for a requested resource upload to the editor
+	fn upload_resource(name: String, data: Vec<u8>) -> Message {
+		ResourceUploadMessage::ReceiveUpload { name: Some(name), data: data.into() }.into()
+	}
+
 	/// Pastes an SVG given its string representation
 	fn paste_svg(name: Option<String>, svg: String, mouse_x: Option<f64>, mouse_y: Option<f64>, insert_parent_id: Option<u64>, insert_index: Option<usize>) -> Message {
 		let mouse = mouse_x.and_then(|x| mouse_y.map(|y| (x, y)));

frontend/wrapper/src/editor_wrapper.rs

@@ -240,6 +240,22 @@ impl EditorWrapper {
 		cfg!(debug_assertions)
 	}
 
+	/// The file extensions of raster images the editor decodes itself (web only; on desktop, dropped files are imported natively and this is never called)
+	#[cfg(all(feature = "web", not(feature = "native")))]
+	#[wasm_bindgen(js_name = rasterImageExtensions)]
+	pub fn raster_image_extensions(&self) -> Vec<String> {
+		editor::messages::portfolio::resource_upload::utility_types::RASTER_IMAGE_EXTENSIONS
+			.iter()
+			.map(|extension| extension.to_string())
+			.collect()
+	}
+	#[cfg(feature = "native")]
+	#[wasm_bindgen(js_name = rasterImageExtensions)]
+	pub fn raster_image_extensions(&self) -> Vec<String> {
+		log::error!("rasterImageExtensions is unavailable on desktop, where dropped files are imported natively");
+		Vec::new()
+	}
+
 	/// Load persisted browser storage state (web only; on desktop, persistence is handled natively and this is never triggered)
 	#[cfg(all(feature = "web", not(feature = "native")))]
 	#[wasm_bindgen(js_name = loadPersistedState)]