public static class CharWidth
{
    private static readonly Dictionary<char, float> CharWidths = new Dictionary<char, float>();
    
    static CharWidth()
    {
        // Default for all ASCII
        for (char c = (char)32; c <= (char)126; c++)
            CharWidths[c] = 5.0f;
        
        // Override exceptions
        CharWidths[' '] = 3.0f;
        CharWidths['!'] = 1.0f;
        CharWidths['"'] = 3.0f;
        CharWidths['\''] = 1.0f;
        CharWidths['('] = 3.0f;
        CharWidths[')'] = 3.0f;
        CharWidths['*'] = 3.0f;
        CharWidths[','] = 1.0f;
        CharWidths['.'] = 1.0f;
        CharWidths[':'] = 1.0f;
        CharWidths[';'] = 1.0f;
        CharWidths['<'] = 4.0f;
        CharWidths['>'] = 4.0f;
        CharWidths['@'] = 6.0f;
        CharWidths['I'] = 3.0f;
        CharWidths['['] = 3.0f;
        CharWidths[']'] = 3.0f;
        CharWidths['`'] = 2.0f;
        CharWidths['f'] = 4.0f;
        CharWidths['i'] = 1.0f;
        CharWidths['k'] = 4.0f;
        CharWidths['l'] = 2.0f;
        CharWidths['t'] = 3.0f;
        CharWidths['{'] = 3.0f;
        CharWidths['|'] = 1.0f;
        CharWidths['}'] = 3.0f;
        CharWidths['~'] = 6.0f;
    }
    
    public static float GetWidth(char c)
    {
        if (CharWidths.TryGetValue(c, out float width))
            return width;
        return 5.0f;
    }
}