在 .NET DrawString 中换行时禁用断字

我正在使用 .NET 将字符串绘制到有限的空间中。我希望字符串尽可能大。我对字符串分成更多行没有问题（如果它留在矩形内）。现在的问题是：我不希望 .NET 在单词中间的不同行中断开字符串。 例如，字符串“Test”以大字体打印在一行上。字符串“Testing”应以较小的字体打印在一行上（而不是一行上的“Testi”和另一行上的“ng”），字符串“Test Test”应以相当大的字体打印在两行上。

有人知道如何限制 .NET 不违背我的话吗？

我目前正在使用这样的代码：

        internal static void PaintString(string s, int x, int y, int height, int maxwidth, Graphics g, bool underline)
    {
        FontStyle fs = FontStyle.Bold;
        if (underline)
            fs |= FontStyle.Underline;
        Font fnt = new System.Drawing.Font("Arial", 18, fs);
        SizeF size = g.MeasureString(s, fnt, maxwidth);
        while (size.Height > height)
        {
            fnt = new System.Drawing.Font("Arial", fnt.Size - 1, fs);
            size = g.MeasureString(s, fnt, maxwidth);
        }
        y = (int)(y + height / 2 - size.Height / 2);
        g.DrawString(s, fnt, new SolidBrush(Color.Black), new Rectangle(x, y, maxwidth, height));
    }

找到字符串中最长的单词并使用MeasureString确保它适合一根线：

internal static void PaintString(string s, int x, int y, int maxHeight, int maxWidth, Graphics graphics, bool underline)
{
    FontStyle fontStyle = FontStyle.Bold;
    if (underline)
    {
        fontStyle |= FontStyle.Underline;
    }

    var longestWord = Regex.Split(s, @"\s+").OrderByDescending(w => w.Length).First();
    using (var arial = new FontFamily("Arial"))
    using (var format = new StringFormat(StringFormatFlags.LineLimit)) // count only lines that fit fully
    {
        int fontSize = 18;
        while (fontSize > 0)
        {
            var boundingBox = new RectangleF(x, y, maxWidth, maxHeight);
            using (var font = new Font(arial, fontSize, fontStyle))
            {
                int charactersFittedAll, linesFilledAll, charactersFittedLongestWord, linesFilledLongestWord;
                graphics.MeasureString(s, font, boundingBox.Size, format, out charactersFittedAll, out linesFilledAll);
                graphics.MeasureString(longestWord, font, boundingBox.Size, format, out charactersFittedLongestWord, out linesFilledLongestWord);

                // all the characters must fit in the bounding box, and the longest word must fit on a single line
                if (charactersFittedAll == s.Length && linesFilledLongestWord == 1)
                {
                    Console.WriteLine(fontSize);
                    graphics.DrawString(s, font, new SolidBrush(Color.Black), boundingBox, format);
                    return;
                }
            }

            fontSize--;
        }

        throw new InvalidOperationException("Use fewer and/or shorter words");
    }
}