public static int EstimateFontSize(BitmapEx bitmap, FontFamily fontFamily, string sample, int?alterWidth = null, int?alterHeight = null)
{
var requestedWidth = alterWidth ?? bitmap.Width;
var requestedHeight = alterHeight ?? bitmap.Height;
return(_cache.GetOrAdd(new Tuple <int, int, FontFamily, string>(requestedWidth, requestedHeight, fontFamily, sample), tuple =>
{
using (var graphics = bitmap.CreateGraphics())
{
var height = tuple.Item2;
SizeF resultSize;
do
{
using (var font = new Font(tuple.Item3, height, GraphicsUnit.Pixel))
{
resultSize = graphics.MeasureString(tuple.Item4, font);
}
height -= 1;
} while (resultSize.Height > tuple.Item2 || resultSize.Width > tuple.Item1);
return height;
}
}));
}
public BitmapEx CreateBitmap()
{
BitmapEx bitmap = new BitmapEx(_width, _height, _pixelFormat);
Rectangle grayRect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
BitmapData grayData = bitmap.LockBits(grayRect, ImageLockMode.ReadWrite, bitmap.PixelFormat);
IntPtr grayPtr = grayData.Scan0;
int grayBytes = grayData.Stride * bitmap.Height;
System.Runtime.InteropServices.Marshal.Copy(_bitmapInternal, 0, grayPtr, grayBytes);
bitmap.UnlockBits(grayData);
return(bitmap);
}
public BitmapRepresentation(BitmapEx bitmap) : this(bitmap?.GetInternal())
{
}
