HighlightsViewUtils.java 文件源码

static int viewToIndex(TextLayout textLayout, double x, Shape alloc, Position.Bias[] biasReturn) {
    Rectangle2D bounds = ViewUtils.shapeAsRect(alloc);
    TextHitInfo hitInfo = x2Index(textLayout, (float)(x - bounds.getX()));
    if (biasReturn != null) {
        biasReturn[0] = hitInfo.isLeadingEdge() ? Position.Bias.Forward : Position.Bias.Backward;
    }
    return hitInfo.getInsertionIndex();
}