I'm trying to add copyright to an image. If the resolution of image is less than 4592x2576, it works as I want. But in second case (in this case if the resolution is equals 4592x2576) it adds copyright too big size.
Look attachments for details.
class Program
{
private static string file5 = "d:\\DSC01305.JPG";
private static string file6 = "d:\\DSC01427.JPG";
static void Main(string[] args)
{
AddCopyrightWithText(file5);//good
AddCopyrightWithText(file6);//not good
}
private const string CopyrightText = "mysite.com";
private const int MaxFontSize = 190;
const int coefficient = 20;
public static void AddCopyrightWithText(string fileName)
{
using (var img = Image.FromFile(fileName))
{
using (var gr = Graphics.FromImage(img))
{
var color = Color.FromArgb(90, 241, 235, 105);
int fontSize = img.Width / coefficient;
if (fontSize > MaxFontSize)
fontSize = MaxFontSize;
var font = new Font("Comic Sans MS", (float)fontSize, FontStyle.Bold);
var stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Center;
gr.SmoothingMode = SmoothingMode.AntiAlias;
int y = img.Height - (int)gr.MeasureString(CopyrightText, font, int.MaxValue).Height;
int x = img.Width / 2;
gr.DrawString(CopyrightText, font, new SolidBrush(color), new Point(x, y), stringFormat);
}
using (var ms = new MemoryStream())
{
img.Save(ms, ImageFormat.Jpeg);
img.Dispose();
File.Delete(fileName);
var file = new FileStream(fileName, FileMode.Create, FileAccess.Write);
ms.Seek(0, SeekOrigin.Begin);
ms.WriteTo(file);
file.Close();
file.Dispose();
}
}
}
}
In the second case if I set fontSize = 182 manually (becase in the first case fontSize is equals 182), there is no effect, the result is the same!
How do I fix it?
P.S. First and second attachments show the result I want, third and fourth shows the bug. Pay attention in third attachment I changed the fontSize manually from 190 to 182.
Original image below
Original image below
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