public int MaxFont(string text, int w, int h, int[] fonts, FontInfo fontInfo)
{
int li = 0, hi = fonts.Length - 1;
while (li <= hi)
{
int mid = li + (hi - li) / 2;
var height = fontInfo.GetHeight(fonts[mid]);
var width = 0;
foreach (var letter in text)
{
width += fontInfo.GetWidth(fonts[mid], letter);
}
if (height <= h && width <= w)
{
li = mid + 1;
}
else
{
hi = mid - 1;
}
}
return(hi < 0 ? -1 : fonts[hi]);
}