onPanStart method

Implementation

@protected
void onPanStart() {
  // When panning starts, measure tick provider should not update ticks.
  // This is still needed because axis internally updates the tick location
  // after the tick provider generates the ticks. If we do not tell the axis
  // not to update the location of the measure axes, we get a jittery effect
  // as the measure axes location changes ever so slightly during pan/zoom.
  _chart!.getMeasureAxis().lockAxis = true;
  _chart!.getMeasureAxis(axisId: Axis.secondaryMeasureAxisId).lockAxis = true;
}