Method _showAxisTooltip

src/component/tooltip/TooltipView.ts:533–657

(
        dataByCoordSys: DataByCoordSys[],
        e: TryShowParams
    )

    }

    private _showAxisTooltip(
        dataByCoordSys: DataByCoordSys[],
        e: TryShowParams
    ) {
        const ecModel = this._ecModel;
        const globalTooltipModel = this._tooltipModel;
        const point = [e.offsetX, e.offsetY];
        const singleTooltipModel = buildTooltipModel(
            [e.tooltipOption],
            globalTooltipModel
        );
        const renderMode = this._renderMode;
        const cbParamsList: TooltipCallbackDataParams[] = [];
        const articleMarkup = createTooltipMarkup('section', {
            blocks: [],
            noHeader: true
        });
        // Only for legacy: `Serise['formatTooltip']` returns a string.
        const markupTextArrLegacy: string[] = [];
        const markupStyleCreator = new TooltipMarkupStyleCreator();

        each(dataByCoordSys, function (itemCoordSys) {
            each(itemCoordSys.dataByAxis, function (axisItem) {
                const axisModel = ecModel.getComponent(axisItem.axisDim + 'Axis', axisItem.axisIndex) as AxisBaseModel;
                const axisValue = axisItem.value;
                const axis = axisModel.axis;
                const axisValueParsed = axis.scale.parse(axisValue);
                if (!axisModel || axisValue == null) {
                    return;
                }
                // FIXME: when using `tooltip.trigger: 'axis'`, the precision of the axis value displayed in tooltip
                //  should match the original series values rather than using the default strategy in Interval.ts
                //  (getPrecision(interval) + 2); otherwise it may cause confusion.
                const axisValueLabel = axisPointerViewHelper.getValueLabel(
                    axisValue, axis, ecModel,
                    axisItem.seriesDataIndices,
                    axisItem.valueLabelOpt
                );
                const axisSectionMarkup = createTooltipMarkup('section', {
                    header: axisValueLabel,
                    noHeader: !trim(axisValueLabel),
                    sortBlocks: true,
                    blocks: []
                });
                articleMarkup.blocks.push(axisSectionMarkup);

                each(axisItem.seriesDataIndices, function (idxItem) {
                    const series = ecModel.getSeriesByIndex(idxItem.seriesIndex);
                    const dataIndex = idxItem.dataIndexInside;
                    const cbParams = series.getDataParams(dataIndex) as TooltipCallbackDataParams;
                    // Can't find data.
                    if (cbParams.dataIndex < 0) {
                        return;
                    }

                    cbParams.axisDim = axisItem.axisDim;
                    cbParams.axisIndex = axisItem.axisIndex;
                    cbParams.axisType = axisItem.axisType;