Export: copy the icon as an SVG

src/widgets/export.rs

@@ -15,6 +15,9 @@ pub struct ExportDialog {
     icon_size_64: gtk::Image,
 }
 
+const TARGET_SVG: u32 = 0;
+const TARGET_SVG_XML: u32 = 1;
+
 impl ExportDialog {
     pub fn new(icon: &Icon) -> ExportDialog {
         let builder = gtk::Builder::new_from_resource("/org/gnome/design/IconLibrary/export_dialog.ui");
@@ -96,15 +99,30 @@ impl ExportDialog {
         // Copy icon to clipboard action: copy-clipboard
         let icon_name = icon.name.clone();
         let copy_icon = gio::SimpleAction::new("copy-clipboard", None);
+
         copy_icon.connect_activate(move |_, _| {
             let display = gdk::Display::get_default().unwrap();
             let clipboard = gtk::Clipboard::get_default(&display).unwrap();
 
-            let theme = gtk::IconTheme::get_default().unwrap();
-            let pixbuf = theme.load_icon(&icon_name, 16, gtk::IconLookupFlags::FORCE_SYMBOLIC).unwrap();
+            let svg_target = gtk::TargetEntry::new("image/svg", gtk::TargetFlags::OTHER_APP, TARGET_SVG);
+            let svg_xml_target = gtk::TargetEntry::new("image/svg+xml", gtk::TargetFlags::OTHER_APP, TARGET_SVG_XML);
+            let targets = [svg_target, svg_xml_target];
 
-            clipboard.set_text("");
-            clipboard.set_image(&pixbuf.unwrap());
+            let icon_name = icon_name.clone();
+            let svg_targets = targets.clone();
+            clipboard.set_with_data(&targets, move |_, selection_data, target_id| {
+                if [TARGET_SVG, TARGET_SVG_XML].contains(&target_id) {
+                    // load the svg content
+                    let theme = gtk::IconTheme::get_default().unwrap();
+                    let icon_info = theme.lookup_icon(&icon_name, 16, gtk::IconLookupFlags::FORCE_SYMBOLIC).unwrap();
+                    let icon_path = icon_info.get_filename().unwrap();
+                    let icon_file = gio::File::new_for_path(icon_path);
+                    let svg = icon_file.load_contents(Some(&gio::Cancellable::new())).unwrap();
+                    // copy the svg content to clipboard when requested
+                    let target = svg_targets.get(target_id as usize).unwrap().get_target();
+                    selection_data.set(&gdk::Atom::intern(target), 8, &svg.0);
+                }
+            });
         });
         actions.add_action(&copy_icon);