Variant SceneTreeEditor::get_drag_data_fw(const Point2 &p_point, Control *p_from) {
if (!can_rename)
return Variant(); //not editable tree
Vector<Node *> selected;
Vector<Ref<Texture> > icons;
TreeItem *next = tree->get_next_selected(NULL);
while (next) {
NodePath np = next->get_metadata(0);
Node *n = get_node(np);
if (n) {
// Only allow selection if not part of an instanced scene.
if (!n->get_owner() || n->get_owner() == get_scene_node() || n->get_owner()->get_filename() == String()) {
selected.push_back(n);
icons.push_back(next->get_icon(0));
}
}
next = tree->get_next_selected(next);
}
if (selected.empty())
return Variant();
VBoxContainer *vb = memnew(VBoxContainer);
Array objs;
int list_max = 10;
float opacity_step = 1.0f / list_max;
float opacity_item = 1.0f;
for (int i = 0; i < selected.size(); i++) {
if (i < list_max) {
HBoxContainer *hb = memnew(HBoxContainer);
TextureRect *tf = memnew(TextureRect);
tf->set_texture(icons[i]);
hb->add_child(tf);
Label *label = memnew(Label(selected[i]->get_name()));
hb->add_child(label);
vb->add_child(hb);
hb->set_modulate(Color(1, 1, 1, opacity_item));
opacity_item -= opacity_step;
}
NodePath p = selected[i]->get_path();
objs.push_back(p);
}
set_drag_preview(vb);
Dictionary drag_data;
drag_data["type"] = "nodes";
drag_data["nodes"] = objs;
tree->set_drop_mode_flags(Tree::DROP_MODE_INBETWEEN | Tree::DROP_MODE_ON_ITEM);
emit_signal("nodes_dragged");
return drag_data;
}