Method getFirstWordLen

core/2d/Label.cpp:2894–2934

}

int Label::getFirstWordLen(const std::u32string& utf32Text, int startIndex, int textLen) const
{
    int len          = 0;
    auto nextLetterX = 0;
    FontLetterDefinition letterDef;
    auto contentScaleFactor = AX_CONTENT_SCALE_FACTOR();

    for (int index = startIndex; index < textLen; ++index)
    {
        char32_t character = utf32Text[index];

        if (character == StringUtils::UnicodeCharacters::NewLine ||
            (!StringUtils::isUnicodeNonBreaking(character) &&
             (StringUtils::isUnicodeSpace(character) || StringUtils::isCJKUnicode(character))))
        {
            break;
        }

        if (!getFontLetterDef(character, letterDef))
        {
            break;
        }

        if (_maxLineWidth > 0.f)
        {
            auto letterX = (nextLetterX + letterDef.offsetX * _fontScale) / contentScaleFactor;

            if (letterX + letterDef.width * _fontScale > _maxLineWidth)
                break;
        }

        nextLetterX += static_cast<int>(letterDef.xAdvance * _fontScale + _additionalKerning);

        len++;
    }

    if (len == 0 && textLen)
        len = 1;

    return len;
}

bool Label::getFontLetterDef(char32_t character, FontLetterDefinition& letterDef) const
{