mouse_states:
| "none"
| "idle"
| "path"
| "grab"
| "drag_selection"
| "selected_element"
| "selected_guide"
| "active_text"
| "overflow"
| "resize"
| "scale"
| "rotate"
| "clip_edit"
| "image_move"
| "image_scale"
| "image_rotate"
| "poly_edit"
| "image_path_edit"
| "multi_move"
| "multi_scale"
| "multi_rotate"
| "gradient_handle"
| "page_gradient_handle"