pub fn data_density_graph_ui(
    data_density_graph_painter: &mut DataDensityGraphPainter,
    ctx: &ViewerContext<'_>,
    time_ctrl: &TimeControl,
    db: &EntityDb,
    time_area_painter: &Painter,
    ui: &Ui,
    time_ranges_ui: &TimeRangesUi,
    row_rect: Rect,
    item: &TimePanelItem,
    tooltips_enabled: bool
)