Ability to rotate controls using tool, closes #3800

scene/gui/control.cpp

@@ -49,14 +49,22 @@
 
 Variant Control::edit_get_state() const {
 
-	return get_rect();
+	Dictionary s;
+	s["rect"]=get_rect();
+	s["rot"]=get_rotation();
+	s["scale"]=get_scale();
+	return s;
 
 }
 void Control::edit_set_state(const Variant& p_state) {
 
-	Rect2 state=p_state;
+	Dictionary s=p_state;
+
+	Rect2 state=s["rect"];
 	set_pos(state.pos);
 	set_size(state.size);
+	set_rotation(s["rot"]);
+	set_scale(s["scale"]);
 }
 
 void Control::set_custom_minimum_size(const Size2& p_custom) {

tools/editor/plugins/canvas_item_editor_plugin.cpp

@@ -1382,6 +1382,8 @@ void CanvasItemEditor::_viewport_input_event(const InputEvent& p_event) {
 				se->undo_state=canvas_item->edit_get_state();
 				if (canvas_item->cast_to<Node2D>())
 					se->undo_pivot=canvas_item->cast_to<Node2D>()->edit_get_pivot();
+				if (canvas_item->cast_to<Control>())
+					se->undo_pivot=Vector2();
 				return;
 			}
 
@@ -1566,14 +1568,34 @@ void CanvasItemEditor::_viewport_input_event(const InputEvent& p_event) {
 			if (drag==DRAG_ROTATE) {
 
 				Vector2 center = canvas_item->get_global_transform_with_canvas().get_origin();
-				if (Node2D *node = canvas_item->cast_to<Node2D>()) {
-					Matrix32 rot;
-					rot.elements[1] = (dfrom - center).normalized();
-					rot.elements[0] = rot.elements[1].tangent();
-					node->set_rot(snap_angle(rot.xform_inv(dto-center).angle() + node->get_rot(), node->get_rot()));
-					display_rotate_to = dto;
-					display_rotate_from = center;
-					viewport->update();
+				{
+					Node2D *node = canvas_item->cast_to<Node2D>();
+
+
+					if (node) {
+						Matrix32 rot;
+						rot.elements[1] = (dfrom - center).normalized();
+						rot.elements[0] = rot.elements[1].tangent();
+						node->set_rot(snap_angle(rot.xform_inv(dto-center).angle() + node->get_rot(), node->get_rot()));
+						display_rotate_to = dto;
+						display_rotate_from = center;
+						viewport->update();
+					}
+				}
+
+				{
+					Control *node = canvas_item->cast_to<Control>();
+
+
+					if (node) {
+						Matrix32 rot;
+						rot.elements[1] = (dfrom - center).normalized();
+						rot.elements[0] = rot.elements[1].tangent();
+						node->set_rotation(snap_angle(rot.xform_inv(dto-center).angle() + node->get_rotation(), node->get_rotation()));
+						display_rotate_to = dto;
+						display_rotate_from = center;
+						viewport->update();
+					}
 				}
 
 				continue;