Function styleEmphasis

src/chart/custom/CustomView.ts:847–873

* @deprecated The reason see `api.style()` * @public * @param dataIndexInside by default `currDataIndexInside`.

(userProps?: ZRStyleProps, dataIndexInside?: number)

     * @param dataIndexInside by default `currDataIndexInside`.
     */
    function styleEmphasis(userProps?: ZRStyleProps, dataIndexInside?: number): ZRStyleProps {
        if (__DEV__) {
            warnDeprecated('api.styleEmphasis', 'Please write literal style directly instead.');
        }

        dataIndexInside == null && (dataIndexInside = currDataIndexInside);

        let itemStyle = getItemStyleModel(dataIndexInside, EMPHASIS).getItemStyle();
        const labelModel = getLabelModel(dataIndexInside, EMPHASIS);
        const textStyle = labelStyleHelper.createTextStyle(labelModel, null, null, true, true);
        textStyle.text = labelModel.getShallow('show')
            ? retrieve3(
                customSeries.getFormattedLabel(dataIndexInside, EMPHASIS),
                customSeries.getFormattedLabel(dataIndexInside, NORMAL),
                getDefaultLabel(data, dataIndexInside)
            )
            : null;
        const textConfig = labelStyleHelper.createTextConfig(labelModel, null, true);

        preFetchFromExtra(userProps, itemStyle);
        itemStyle = convertToEC4StyleForCustomSerise(itemStyle, textStyle, textConfig);

        userProps && applyUserPropsAfter(itemStyle, userProps);
        (itemStyle as LegacyStyleProps).legacy = true;

        return itemStyle;
    }

    function applyUserPropsAfter(itemStyle: ZRStyleProps, extra: ZRStyleProps): void {
        for (const key in extra) {