Method ProcessText

Source/Engine/Render2D/Font.cpp:126–309

}

void Font::ProcessText(const StringView& text, Array<FontLineCache, InlinedAllocation<8>>& outputLines, const TextLayoutOptions& layout)
{
    int32 textLength = text.Length();
    if (textLength == 0)
        return;
    float cursorX = 0;
    int32 kerning;
    FontLineCache tmpLine;
    FontCharacterEntry entry;
    FontCharacterEntry previous;
    float scale = layout.Scale / FontManager::FontScale;
    float boundsWidth = layout.Bounds.GetWidth();
    float baseLinesDistance = static_cast<float>(_height) * layout.BaseLinesGapScale * scale;
    tmpLine.Location = Float2::Zero;
    tmpLine.Size = Float2::Zero;
    tmpLine.FirstCharIndex = 0;
    tmpLine.LastCharIndex = -1;

    int32 lastWrapCharIndex = INVALID_INDEX;
    float lastWrapCharX = 0;
    bool lastMoveLine = false;
    const Char compChar = TEXT('_');

    // Process each character to split text into single lines
    for (int32 currentIndex = 0; currentIndex < textLength;)
    {
        bool moveLine = false;
        float xAdvance = 0;
        int32 nextCharIndex = currentIndex + 1;

        // Cache current character
        const Char currentChar = text[currentIndex];
        const bool isWhitespace = StringUtils::IsWhitespace(currentChar);

        // Check if character can wrap words
        const bool isWrapChar = (!StringUtils::IsAlnum(currentChar) && StringUtils::Compare(&currentChar, &compChar) == 0) || isWhitespace || StringUtils::IsUpper(currentChar);
        if (isWrapChar && currentIndex != 0)
        {
            lastWrapCharIndex = currentIndex;
            lastWrapCharX = cursorX;
        }

        // Check if it's a newline character
        if (currentChar == '\n')
        {
            // Break line
            moveLine = true;
            currentIndex++;
            tmpLine.LastCharIndex++;
        }
        else
        {
            // Get character entry
            GetCharacter(currentChar, entry);

            // Get kerning
            if (!isWhitespace && previous.IsValid)
            {