Usage

Wrap it using a widget that has a size like:

• AspecRatio
• SizedBox
• Container

AspectRatio(
    aspectRatio: 1,
    child: DChartComboO(),
),
SizedBox(
    width: 200,
    height: 100,
    child: DChartComboO(),
),
Container(
    width: 200,
    height: 100,
    child: DChartComboO(),
),