Letter Watermark - CSharp System.Drawing.Imaging

CSharp examples for System.Drawing.Imaging:Bitmap

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Description

Letter Watermark

Demo Code


using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Drawing;
using System.IO;/*from w  w  w  . jav  a  2  s.com*/
using System.Collections;
using System;

public class Main{

        public static string LetterWatermark(string path, int size, string letter, Color color, string location)
        {

            string kz_name = Path.GetExtension(path);
            if (kz_name == ".jpg" || kz_name == ".bmp" || kz_name == ".jpeg")
            {
                DateTime time = DateTime.Now;
                string filename = "" + time.Year.ToString() + time.Month.ToString() + time.Day.ToString() + time.Hour.ToString() + time.Minute.ToString() + time.Second.ToString() + time.Millisecond.ToString();
                Image img = Bitmap.FromFile(path);
                Graphics gs = Graphics.FromImage(img);
                ArrayList loca = GetLocation(location, img, size, letter.Length);
                Font font = new Font("??", size);
                Brush br = new SolidBrush(color);
                gs.DrawString(letter, font, br, float.Parse(loca[0].ToString()), float.Parse(loca[1].ToString()));
                gs.Dispose();
                string newpath = Path.GetDirectoryName(path) + filename + kz_name;
                img.Save(newpath);
                img.Dispose();
                File.Copy(newpath, path, true);
                if (File.Exists(newpath))
                {
                    File.Delete(newpath);
                }
            }
            return path;

        }
}

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