createRenderer method

StepAreaSeriesRenderer createRenderer(
  1. ChartSeries<T, D> series
)

To create a step area series renderer.

Implementation

StepAreaSeriesRenderer createRenderer(ChartSeries<T, D> series) {
  StepAreaSeriesRenderer stepAreaRenderer;
  if (onCreateRenderer != null) {
    stepAreaRenderer = onCreateRenderer!(series) as StepAreaSeriesRenderer;
    // ignore: unnecessary_null_comparison
    assert(stepAreaRenderer != null,
        'This onCreateRenderer callback function should return value as extends from ChartSeriesRenderer class and should not be return value as null');
    return stepAreaRenderer;
  }
  return StepAreaSeriesRenderer();
}