Function fixValue

src/component/axisPointer/modelHelper.ts:352–396

(axisModel: AxisBaseModel)

}

export function fixValue(axisModel: AxisBaseModel) {
    const axisInfo = getAxisInfo(axisModel);
    if (!axisInfo) {
        return;
    }

    const axisPointerModel = axisInfo.axisPointerModel;
    const scale = axisInfo.axis.scale;
    const option = axisPointerModel.option;
    const status = axisPointerModel.get('status');
    let value = axisPointerModel.get('value');

    // Parse init value for category and time axis.
    if (value != null) {
        value = scale.parse(value);
    }

    const useHandle = isHandleTrigger(axisPointerModel);
    // If `handle` used, `axisPointer` will always be displayed, so value
    // and status should be initialized.
    if (status == null) {
        option.status = useHandle ? 'show' : 'hide';
    }

    const extent = scale.getExtent();

    if (// Pick a value on axis when initializing.
        value == null
        // If both `handle` and `dataZoom` are used, value may be out of axis extent,
        // where we should re-pick a value to keep `handle` displaying normally.
        || value > extent[1]
    ) {
        // Make handle displayed on the end of the axis when init, which looks better.
        value = extent[1];
    }
    if (value < extent[0]) {
        value = extent[0];
    }

    option.value = value;

    if (useHandle) {
        option.status = axisInfo.axis.scale.isBlank() ? 'hide' : 'show';
    }
}

export function getAxisInfo(axisModel: AxisBaseModel) {
    const coordSysAxesInfo = (axisModel.ecModel.getComponent('axisPointer') as AxisPointerModel || {})