getTicks method

@override List<Tick<DateTime>> getTicks({ required ChartContext? context, required GraphicsFactory graphicsFactory, required covariant DateTimeScale scale, required TickFormatter<DateTime> formatter, required Map<DateTime, String> formatterValueCache, required TickDrawStrategy<DateTime> tickDrawStrategy, required AxisOrientation? orientation, bool viewportExtensionEnabled = false, TickHint<DateTime>? tickHint, })

Generates a list of ticks for the given data which should not collide unless the range is not large enough.

Implementation

@override
List<Tick<DateTime>> getTicks({
  required ChartContext? context,
  required GraphicsFactory graphicsFactory,
  required DateTimeScale scale,
  required TickFormatter<DateTime> formatter,
  required Map<DateTime, String> formatterValueCache,
  required TickDrawStrategy<DateTime> tickDrawStrategy,
  required AxisOrientation? orientation,
  bool viewportExtensionEnabled = false,
  TickHint<DateTime>? tickHint,
}) {
  List<TimeRangeTickProvider> tickProviders;

  /// If tick hint is provided, use the closest tick provider, otherwise
  /// look through the tick providers for one that provides sufficient ticks
  /// for the viewport.
  if (tickHint != null) {
    tickProviders = [_getClosestTickProvider(tickHint)];
  } else {
    tickProviders = _potentialTickProviders;
  }

  final lastTickProvider = tickProviders.last;

  final viewport = scale.viewportDomain;
  for (final tickProvider in tickProviders) {
    final isLastProvider = tickProvider == lastTickProvider;
    if (isLastProvider ||
        tickProvider.providesSufficientTicksForRange(viewport)) {
      return tickProvider.getTicks(
        context: context,
        graphicsFactory: graphicsFactory,
        scale: scale,
        formatter: formatter,
        formatterValueCache: formatterValueCache,
        tickDrawStrategy: tickDrawStrategy,
        orientation: orientation,
      );
    }
  }

  return <Tick<DateTime>>[];
}