M1: copying text layers puts their text on the clipboard (#808)

edit.copy and edit.cut mirror a selection made only of text layers to the system clipboard as plain text, one layer per line, instead of SVG. Other selections stay SVG; pasting back into FigCraft still pastes the copied layers.

Closes #808

Co-authored-by: Cursor <cursoragent@cursor.com>

crates/ui-egui/src/menus.rs

@@ -206,12 +206,13 @@ pub fn invoke(app: &mut FigApp, id: &str) {
         "collab.publish" => crate::live::open_publish(app),
         "edit.copy" | "edit.cut" => {
             let ids = app.session.selection();
-            // SVG for other apps, taken before a cut removes the layers.
-            let svg = app.session.doc().ok().and_then(|d| figcraft_svg_export(d, &ids));
+            // For other apps: text layers' text, other layers as SVG; taken before a cut removes them.
+            let doc = app.session.doc().ok();
+            let mirror = doc.and_then(|d| text_layers_text(d, &ids).or_else(|| figcraft_svg_export(d, &ids)));
             app.run(id, json!({}));
-            // Mirror to the system clipboard (SVG text, else a marker) and remember it, so a later
-            // paste knows whether the clipboard still holds our layers.
-            let text = svg.unwrap_or_else(|| format!("figcraft://clipboard/{}", ids.len()));
+            // Mirror to the system clipboard (text or SVG, else a marker) and remember it, so a
+            // later paste knows whether the clipboard still holds our layers.
+            let text = mirror.unwrap_or_else(|| format!("figcraft://clipboard/{}", ids.len()));
             app.services.clipboard_set_text(&text);
             app.ui.last_copy = Some(text);
         }
@@ -239,6 +240,13 @@ fn export_frames_pdf(app: &mut FigApp) {
     });
 }
 
+/// The text of a selection made only of text layers, one layer per line (None for any other
+/// selection, or when there is no text).
+fn text_layers_text(doc: &figcraft_doc::Document, ids: &[figcraft_doc::NodeId]) -> Option<String> {
+    let texts: Option<Vec<&str>> = ids.iter().map(|i| doc.node(*i).and_then(|n| n.kind.text()).map(|t| t.characters.as_str())).collect();
+    texts.map(|t| t.join("\n")).filter(|t| !t.is_empty())
+}
+
 fn figcraft_svg_export(doc: &figcraft_doc::Document, ids: &[figcraft_doc::NodeId]) -> Option<String> {
     let bytes = figcraft_engine::cmd::file::export_bytes(doc, ids, figcraft_doc::ExportFormat::Svg, 1.0).ok()?;
     String::from_utf8(bytes).ok()

crates/ui-egui/src/web_clipboard_tests.rs

@@ -141,6 +141,24 @@ fn text_copied_elsewhere_after_our_copy_still_pastes_as_text() {
     assert_eq!(p.count(text), 1, "newer text from elsewhere becomes a text layer");
 }
 
+#[test]
+fn copying_text_layers_puts_their_text_on_the_clipboard() {
+    // #808: other apps get a text layer's text, not its SVG; FigCraft still pastes the layers.
+    let mut p = Page::new();
+    let a = p.app.session.execute("text.create", &json!({"text": "Hello", "x": 0, "y": 200})).unwrap();
+    let b = p.app.session.execute("text.create", &json!({"text": "World", "x": 0, "y": 300})).unwrap();
+    p.app.session.execute("select.set", &json!({"ids": [a["id"], b["id"]]})).unwrap();
+    p.frame(vec![]);
+    p.copy();
+    assert_eq!(p.clipboard, "Hello\nWorld", "one line per text layer");
+    p.paste();
+    assert_eq!(p.count(text), 4, "the copied text layers were pasted, not one layer of their text");
+    let r = p.app.session.doc().unwrap().nodes().find(|n| rect(&n.kind)).map(|n| n.id.0).unwrap();
+    p.app.session.execute("select.set", &json!({"ids": [r, a["id"]]})).unwrap();
+    p.copy();
+    assert!(p.clipboard.contains("<svg"), "a selection with other layers stays SVG");
+}
+
 #[test]
 fn shift_cmd_v_pastes_over_once_and_no_text() {
     for foreign in [false, true] {