模拟水印相机
上效果图
public void WaterMark() { string sourcePath = @"D:\0.测试图片\微信图片_20230829184000.jpg"; string saveFilePath = @"D:\0.测试图片\WaterMarkImg\"; using (StreamReader sr = new StreamReader(sourcePath)) { Image image = Image.FromStream(sr.BaseStream); //创建一把刷子 //防止索引像素格式引发异常的像素格式 Bitmap bmp = new Bitmap(image.Width, image.Height, PixelFormat.Format24bppRgb); Graphics grap = Graphics.FromImage(bmp); grap.Clear(Color.White); grap.SmoothingMode = SmoothingMode.HighQuality; grap.InterpolationMode = InterpolationMode.High; grap.DrawImage(image, 0, 0, image.Width, image.Height); //计算字体大小 TextWaterMark(grap, image.Width, image.Height); //返回有水印的图片流 MemoryStream stream = new MemoryStream(); bmp.Save(stream, ImageFormat.Png); var newbytes = stream.GetBuffer(); var saveName = this.GetSaveName("水印图片.png"); var fullName = Path.Combine(saveFilePath, saveName); var fullPath = Path.GetDirectoryName(fullName); if (!Directory.Exists(fullPath)) { Directory.CreateDirectory(fullPath); } using (FileStream fs = new FileStream(fullName, FileMode.Append, FileAccess.Write)) { fs.Write(newbytes, 0, newbytes.Length); fs.Close(); } } }
public void AddTextWaterMark(Item item, Graphics grap, int width, int height) { string time = item.BuyDate.ToShortTimeString3();//时间 HH:mm string day = item.BuyDate.ToShortDateString3() + " " + DateTime.Now.ToWeekString();//日期 yyyy-MM-dd 星期 string address = item.OfflineShopAddress;//地址 string securityCode = "防伪 " + this.GetRandomString(14);//防伪码 //计算字体大小 Font font = new Font("微软雅黑", 14, FontStyle.Bold); int fontSize = 30; int[] sizes = new int[] { 30, 28, 26, 24, 22, 20, 18, 16, 14 }; SizeF crSize0 = new SizeF(); for (int i = 0; i < 7; i++) { fontSize = sizes[i]; font = new Font("微软雅黑", fontSize, FontStyle.Bold); crSize0 = grap.MeasureString("已验证考勤信息真实性", font);//水印宽度 if ((ushort)crSize0.Width < (ushort)width / 4) break; } Font font2 = new Font("微软雅黑", fontSize + 6, FontStyle.Bold);//时间：Arial Font font5 = new Font("微软雅黑", fontSize - 4, FontStyle.Bold); Font font3 = new Font("微软雅黑", fontSize - 8, FontStyle.Bold);//防伪 Font font4 = new Font("黑体", fontSize + 6, FontStyle.Bold);//打卡 Brush brush = new SolidBrush(Color.FromArgb(255, 255, 255, 255));//白色 Brush brush2 = new SolidBrush(Color.FromArgb(255, 38, 38, 38));//黑色 Brush brush3 = new SolidBrush(Color.FromArgb(255, 4, 46, 113));//蓝色 Brush brush4 = new SolidBrush(Color.FromArgb(255, 254, 191, 50));//黄色 Brush brush5 = new SolidBrush(Color.FromArgb(200, 255, 255, 255));//白色-透明 SizeF crSize = grap.MeasureString(day, font); SizeF crSize5 = grap.MeasureString("已验证考勤信息真实性", font5); float xpos = ((float)width * (float).02); float ypos = ((float)height * (float).99) - crSize5.Height; grap.RotateTransform(0); grap.DrawString("已验证考勤信息真实性", font5, brush2, xpos + 1, ypos + 1); grap.DrawString("已验证考勤信息真实性", font5, brush5, xpos, ypos); ypos = ypos - 5;//行间距 ypos = ypos - crSize.Height; //左下角——日期 grap.DrawString(day, font, brush2, xpos + 10 + 1, ypos + 1); grap.DrawString(day, font, brush, xpos + 10, ypos); //左下角——地址 SizeF crSize2 = grap.MeasureString(address, font);//水印宽度 var addressList = address.ToCharArray(); int index = addressList.Length; while (crSize2.Width > (width / 4) * 3) { index--; crSize2 = grap.MeasureString(address.Substring(0, index), font); } ypos = ypos - crSize2.Height; Rectangle rect = new Rectangle(Convert.ToInt32(xpos), Convert.ToInt32(ypos), 2, Convert.ToInt32(crSize2.Height + crSize5.Height)); if (index < addressList.Length) { grap.DrawString(address.Substring(index, addressList.Length - index), font, brush2, xpos + 10 + 1, ypos + 1); grap.DrawString(address.Substring(index, addressList.Length - index), font, brush, xpos + 10, ypos); ypos = ypos - crSize2.Height; grap.DrawString(address.Substring(0, index), font, brush2, xpos + 10 + 1, ypos + 1); grap.DrawString(address.Substring(0, index), font, brush, xpos + 10, ypos); rect = new Rectangle(Convert.ToInt32(xpos), Convert.ToInt32(ypos), 2, Convert.ToInt32(crSize2.Height) * 2 + Convert.ToInt32(crSize5.Height)); } else { grap.DrawString(address, font, brush2, xpos + 10 + 1, ypos + 1); grap.DrawString(address, font, brush, xpos + 10, ypos); } //设置矩形边框颜色和线条样式-黄色竖条 Pen pen = new Pen(Color.FromArgb(255, 254, 191, 50), 2); grap.DrawRectangle(pen, rect); //左下角——时间 SizeF crSize3 = grap.MeasureString(time, font2);//水印宽度 SizeF crSize33 = grap.MeasureString("打卡", font2);//水印宽度 ypos = ypos - 5;//行间距 //白色矩形 int juxingWidth = Convert.ToInt32(crSize3.Width + crSize33.Width); int juxingHeight = Convert.ToInt32(crSize3.Height); float y0 = ypos - crSize3.Height - 10; int radius = 10; // 定义圆角的半径 GraphicsPath gp = new GraphicsPath(); gp.AddArc(xpos, y0, radius, radius, 180, 90); gp.AddArc(xpos + juxingWidth, y0, radius, radius, 270, 90); gp.AddArc(xpos + juxingWidth, y0 + juxingHeight, radius, radius, 0, 90); gp.AddArc(xpos, y0 + juxingHeight, radius, radius, 90, 90); gp.CloseAllFigures(); grap.FillPath(brush, gp); //黄色矩形 float x00 = xpos + 4; int juxingWidth2 = Convert.ToInt32(crSize33.Width); int juxingHeight2 = Convert.ToInt32(crSize3.Height) - 4; float y00 = ypos - crSize3.Height - 10 + 4; int radius2 = 5; // 定义圆角的半径 GraphicsPath gp2 = new GraphicsPath(); gp2.AddArc(x00, y00, radius2, radius2, 180, 90); gp2.AddArc(x00 + juxingWidth2, y00, radius2, radius2, 270, 90); gp2.AddArc(x00 + juxingWidth2, y00 + juxingHeight2, radius2, radius2, 0, 90); gp2.AddArc(x00, y00 + juxingHeight2, radius2, radius2, 90, 90); gp2.CloseAllFigures(); grap.FillPath(brush4, gp2); float x3 = xpos + 7; ypos = ypos - crSize3.Height + 2; grap.DrawString("打卡", font4, brush2, x3, ypos); x3 = x3 + crSize33.Width; grap.DrawString(time, font2, brush3, x3, ypos - 5); ypos = ypos - 5;//行间距 //右下角——防伪 SizeF crSize4 = grap.MeasureString(securityCode, font3);//水印宽度 float x4 = ((float)width * (float).99) - crSize4.Width; float y4 = ((float)height * (float).99) - crSize4.Height; grap.DrawString(securityCode, font3, brush2, x4 - 1, y4 + 1); grap.DrawString(securityCode, font3, brush, x4, y4); y4 = y4 - 5;//行间距 //右下角——相机 SizeF crSize6 = grap.MeasureString("相机 真实时间", font5);//水印宽度 x4 = ((float)width * (float).99) - crSize6.Width; y4 = y4 - crSize6.Height; grap.DrawString("相机 真实时间", font5, brush2, x4 - 1, y4 + 1); grap.DrawString("相机 真实时间", font5, brush, x4, y4); y4 = y4 - 5;//行间距 //右下角——今日水印 SizeF crSize7 = grap.MeasureString("今日水印", font);//水印宽度 x4 = ((float)width * (float).99) - crSize7.Width; y4 = y4 - crSize7.Height; grap.DrawString("今日水印", font, brush2, x4 - 1, y4 + 1); grap.DrawString("今日水印", font, brush, x4, y4); grap.Dispose(); }
public string GetRandomString(int length) { byte[] b = new byte[4]; new System.Security.Cryptography.RNGCryptoServiceProvider().GetBytes(b); Random r = new Random(BitConverter.ToInt32(b, 0)); string s = null; string str = "0123456789"; str += "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; for (int i = 0; i < length; i++) { s += str.Substring(r.Next(0, str.Length - 1), 1); } return s; }
