buildHorizontal method

@override Widget buildHorizontal()

Implementation

@override
Widget buildHorizontal() {
  return LayoutBuilder(builder: (context, constraints) {
    final maxLayoutHeight = constraints.maxHeight;
    final segmentSpace = maxLayoutHeight / (tickCount - 1);

    final alignStack = switch (crossAxis) {
      CrossAxisAlignment.start => Alignment.centerLeft,
      CrossAxisAlignment.center => Alignment.center,
      _ => Alignment.centerRight,
    };
    return Stack(
      alignment: alignStack,
      children: [
        Column(
          crossAxisAlignment: crossAxis,
          mainAxisAlignment: MainAxisAlignment.end,
          children: [labelsInViewport.first].map((e) {
            final labelText = DrawTickLabel<num>(
              label: e,
              labelFormatter: measureAxis.labelFormatter,
              labelStyle: measureAxis.labelStyle,
            );
            final labelOffset = Offset(
              measureAxis.labelOffset.dx,
              measureAxis.labelOffset.dy + segmentSpace / 2,
            );
            return Transform.translate(
              offset: labelOffset,
              child: SizedBox(
                height: segmentSpace,
                child: Align(
                  alignment: Alignment.center,
                  child: measureAxis.labelWidget != null
                      ? measureAxis.labelWidget!(e) ?? labelText
                      : labelText,
                ),
              ),
            );
          }).toList(),
        ),
        Column(
          crossAxisAlignment: crossAxis,
          mainAxisAlignment: MainAxisAlignment.end,
          children: List.generate(tickCount - 1, (index) {
            final label = labelsInViewport[index + 1];
            final labelText = DrawTickLabel<num>(
              label: label,
              labelFormatter: measureAxis.labelFormatter,
              labelStyle: measureAxis.labelStyle,
            );

            final labelOffset = Offset(
              measureAxis.labelOffset.dx,
              measureAxis.labelOffset.dy - segmentSpace / 2,
            );

            return Transform.translate(
              offset: labelOffset,
              child: SizedBox(
                height: segmentSpace,
                child: Align(
                  alignment: Alignment.center,
                  child: measureAxis.labelWidget != null
                      ? measureAxis.labelWidget!(label) ?? labelText
                      : labelText,
                ),
              ),
            );
          }).reversed.toList(),
        ),
      ],
    );
  });
}