Method __moveCursorTo

core/ui/UITextFieldEx.cpp:985–1036

}

void TextFieldEx::__moveCursorTo(float x)
{  // test
    // normalized x
    float normalizedX = 0;

    std::string_view displayText;
    if (!_secureTextEntry)
    {
        displayText = _inputText;
    }
    else
    {
        if (!_inputText.empty())
        {
            displayText = _renderLabel->getString();
        }
    }

    int length = static_cast<int>(displayText.length());
    int n      = static_cast<int>(_charCount);  // UTF8 char counter

    int insertWhere     = 0;
    int insertWhereUtf8 = 0;
    while (length > 0)
    {
        auto checkX = internalCalcStringWidth(displayText, _fontName, _fontSize);
        if (x >= checkX)
        {
            insertWhere     = length;
            insertWhereUtf8 = n;
            normalizedX     = checkX;
            break;
        }

        // clamp backward
        size_t backwardLen = 1;  // default, erase 1 byte
        while (0x80 == (0xC0 & displayText.at(displayText.length() - backwardLen)))
        {
            ++backwardLen;
        }

        --n;
        displayText.remove_suffix(backwardLen);

        length -= backwardLen;
    }

    _insertPos     = !_secureTextEntry ? insertWhere : insertWhereUtf8;
    _cursorPos     = insertWhere;
    _insertPosUtf8 = insertWhereUtf8;
    _cursor->setPosition(Point(normalizedX, this->getContentSize().height / 2));
}
};  // namespace ui

}