Function rollbackDefaultTextStyle

libs/echarts/echarts.simple.js:17875–17884

* Consider the case: in a scatter, * label: { * normal: {position: 'inside'}, * emphasis: {position: 'top'} * } * In the normal state, the `textFill` will be set as '#fff' for pretty view (see * `applyDefaultTextStyle`), but when switching to emphasis state, the `textFill` * should be

(style)

 * should be retured to 'autoColor', but not keep '#fff'.
 */
function rollbackDefaultTextStyle(style) {
    var insideRollback = style.insideRollback;
    if (insideRollback) {
        // Reset all of the props in `CACHED_LABEL_STYLE_PROPERTIES`.
        style.textFill = insideRollback.textFill;
        style.textStroke = insideRollback.textStroke;
        style.textStrokeWidth = insideRollback.textStrokeWidth;
        style.insideRollback = null;
    }
}

function getFont(opt, ecModel) {
    var gTextStyleModel = ecModel && ecModel.getModel('textStyle');